【SS01】Vibration-based monitoring and damage identification for bridges
Necati CatbasUniversity of Central Florida Orlando, Florida, USAcatbas@ucf.edu
Several monitoring systems installed on bridges utilize real-time or near-real-time responses for collecting vibration data to make informed decisions related to the health of the structure. The possibility to assess the health state based on data recorded on the monitored structure opens new avenues in maintenance policies, shifting from a traditional ‘scheduled maintenance’ to a ‘condition-based maintenance’, carried out ‘on demand' or ‘automatically’, based on the current structural condition.
The aim of this special session is to report on recent advances and successful applications of Vibration-based Structural Health Monitoring (SHM) and damage identification for bridges. The session welcomes contributions that cover, but are not limited to, theoretical developments, computational issues, experimental techniques and tools for health monitoring, real world applications, integration of SHM in procedures for risk assessment and decision-making.
The expected attendance of IABMAS 2020 by key players on the development and on the application side will ensure that this session offers a real state-of-the-art view of SHM while providing a venue for exchange and share new ideas, as well as a chance to establish and enhance future collaborations on this subject.
【SS02】Cracking simulation and measurement of concrete structures
Concrete cracking is an important issue in safety, functionality and durability of bridges. The focus of this special session is to share current work on how simulations and measurements can improve bridge assessment and management. Potential topics can include advances in different calculation models (e.g. FEM, FDM, BEM, RBSN) and experimental techniques (e.g. impact echoes, ultrasonic waves, acoustic emission, radar or thermographic inspection, digital camera images). Particularly encouraged papers are oncross topical boundaries, such as the use of non-destructive measurements to augment or validate multiscale or discrete models. Papers exploiting advanced calculation or experimental techniques are also encouraged.
【SS03】Steel bridge rehabilitation
In this special session, papers on evaluation, assessment, repair and retrofit of fatigue and corrosion damage in steel highway and railway bridges are presented and discussed. We have a huge number of steel highway and railway bridge structures especially in the urban area and across rivers and straits. Some of those bridges suffer various types of fatigue and corrosion damage, but replace of them should be too expensive, and restriction or close of the traffic could be hardly allowed. Therefore, rehabilitation of those structures becomes of great importance in the very near future.
【SS04】Bridge design-maintenance and monitoring practices around world
Necati F. CatbasUniversity of Central Florida Orlando, Florida, USAcatbas@ucf.edu
With the development of technology and increasing communication, traveling has increased. This requires more comfortable infrastructures. As a result, there has been an increase in the number of long span bridges. New approaches have been adopted in the design of many new mega projects. In addition, increased number of bridges has led engineers to identify more systematic methods for their maintenance. For this purpose, new approaches at maintenance and structural monitoring have been developed.
In this session, mega projects and their design-maintenance and structural monitoring approaches in different countries will be discussed. The advantages and disadvantages of the methods that used will also be shared.
【SS05】Soil-steel composite bridges and culverts: Testing and numerical analysis
The soil-steel bridges and culverts constitute more and more often an element of transportation infrastructure in various parts of the world. For this reason, the special session fits in the actual trends in bridge engineering. Soil-steel bridges are built mainly for economic reasons and they are getting more often used as all kinds of bridge crossings, especially of medium span (10-30 m) and in locations where short construction time and road or railway traffic continuity is required. They constitute a perfect alternative for traditional bridges of concrete or steel. The discussed structures, due to their characteristics, i.e. flexible steel structure, interaction with backfill, can transfer very heavy live loads caused by vehicles travelling along them. However, there are many problems and unknown factors related to designing of soil-steel bridges because of loading, for example, with backfill, static, dynamic, fatigue caused by normal service loads as well as seismic and para-seismic loading. Besides, standards used to design soil-steel bridges are based on conservative assumptions, which is the reason why the structures are often overdesigned.
【SS06】Numerical simulation technique in life-cycle design and maintenance of bridge
Performance deterioration models are essential to the life-cycle design and maintenance strategy of bridges. The numerical simulation technique provides an efficient and flexible approach to develop advanced and objective deterioration models for different kinds of performances, e.g., safety, serviceability, durability. With the numerical simulation method, it is possible to optimize the key design parameters and estimate the perfect timing for the maintenance work. This SS is proposed to discuss and share the recent advanced numerical simulation technique for concrete, steel, and other kinds of bridges. The topics include but not limited to the harmful substance transport, steel corrosion, facture and cracking.
【SS07】Approaches to bridge management / Bridge management systems from around the world
This Special Session is organized by the IABMAS Technical Committee on Bridge Management and focuses on approaches to Bridge Management / Bridge Management Systems from around the world. It will highlight approaches to risk management / risk-based decision making, measuring and reporting performance, and long-term cost analysis and how these approaches can benefit bridge owners. Papers describing experiences and lessons learned in new BMS implementation projects from around the world are encouraged.
The participation of Bridge Management and BMS experts from around the world will ensure that this session offers a real state-of-the-art view of the topic while providing a venue for exchange and sharing of experiences and new ideas.
【SS08】Standardization of quality specifications for highway bridges
Quality specifications (QS) for highway bridges are normally stored in Bridge Management Systems (BMS) and should be considered during the implementation of asset management strategies and maintenance actions to keep assets at desired performance levels. Performance indicators and performance goals are stablished for components. These indicators allow to assess if quality control plans are accomplished. One problem in the application of QS to a large highway network is their lack of homogeneity due to different quality standards assumed by different owners/operators. The objective of the special session is to know how this lack of homogeneity can be solved through standardization efforts and how different countries/owners have dealt with the problem around the world. In particular, the recent experience developed in Europe through the work carried out in the Action COST TU-1406 (Quality Specifications for Roadway Bridges, Standardization at a European Level) will be presented, showing how practical guidelines for quality control were stablished as well as the necessary steps to follow leading to the standardization of the proposed quality specifications.
【SS09】Sustainable marine structures
Nguyen Thanh TrungUniversity of Transport and Communications (UTC), Vietnamnttrung@utc.edu.vn
Marine structures are frequently subjected to harsh environment and many types of deterioration and damage can occur. In order to keep the structural performance above requirements, appropriate maintenance and management of marine structures are necessary. The design method considering service life is also necessary to prevent such deteriorations in advance. This SS is proposed to share recent advancements of maintenance and management of marine structures as well as design considering maintenance. All the relevant topics on marine structures are within the scope of this SS, which will contribute to sustainable marine structures.
【SS10】Life-cycle redundancy, robustness and resilience of bridges and infrastructure networks under multiple hazards
Notable events of bridge collapses due to accidental loads, environmental aggressiveness and related phenomena, such as corrosion and fatigue, indicated structural redundancy and robustness as key factors for a rational approach to life-cycle design of deteriorating bridges and infrastructure systems. Structural resilience is also an important indicator in bridge engineering to express the capability of bridge structure and infrastructure systems exposed to extreme events, such as earthquakes, to withstand the load effects and to recover efficiently the original configuration. However, the concepts of redundant, robust and resilient structure and infrastructure systems, or damage-tolerant systems, are still issues of controversy, since there are no well established and generally accepted criteria for a consistent definition and a quantitative measure of these performance indicators. The aim of this Special Session is to present advances on this subject and to provide conceptual and analytical design tools that can effectively be implemented in design practice for measuring and evaluating the life-cycle redundancy, robustness and resilience of bridge structures and infrastructure networks under multiple hazards, with emphasis on the interaction between seismic and environmental hazards in aggressive environments.
Special Session organized on behalf of the SEI/ASCE Technical Council on Life-Cycle Performance, Safety, Reliability and Risk of Structural Systems, Task Group 2 on Reliability-Based Performance Indicators for Structural Systems.
【SS11】Application of vehicle-bridge interaction to bridge maintenance and safety
The primary function of a bridge is to carry traffic. Vehicle load is one of the major live loads for bridges. The research on the interaction between the bridge and vehicles is very essential to maintain the safety and integrity of bridge structures. Research such as the traffic load identification, bridge damage detection, and structural performance assessment are all related to vehicle-bridge interactions. In this special session, we will focus on the discussion of the vehicle-bridge interaction (VBI) and its applications in bridge maintenance and safety, including but not limited to vehicle-bridge-wind interaction, bridge-weigh-in-motion (BWIM) technology, VBI-based damage detection and health monitoring, vehicle-induced bridge fatigue assessment.
【SS12】Deterioration modelling and structural reliability analysis of bridges
Deterioration is the most common cause of serviceability or ultimate failure of bridges. In this special session advances in deterioration modelling of steel and concrete bridges will be presented. The results of lab experiments and field monitoring from different projects which observe and model the progress of deterioration (such as corrosion, crack growth, etc.) will be shared and discussed.
Accurate structural reliability analysis of in-service bridges is vital for efficient maintenance and management of these assets. Novel ideas/methods for structural reliability analysis and service life prediction of different bridge types will also be discussed through the selected technical papers.
【SS13】Constructability difficulties of bridges and solutions
Bridge structural elements are often analyzed considering stages of construction for loadings or stresses that are not present in the completed, in-service structure. Structural systems, construction methods, and project constrains employed today presents many challenges requiring change orders or leading to failure conditions of the bridge and/or components. Constructability is especially critical during accelerated bridge construction where bridge may need to be moved to alignment before critical components such as cables, diaphragms and main girders with incomplete posttensioning are incorporated. Articles of interest includes constructability related issues including failures, analysis tools and procedures, contracting methods, and specifications to assure constructability.
【SS14】Bridge structural health monitoring for infrastructure management
The Special Session on Bridge Structural Health Monitoring for Infrastructure Management will bring together leading academics and practitioners from the fields of smart infrastructure, structural health monitoring and infrastructure management. The Special Session will reflect the advances and current challenges in bridge structural health monitoring and asset management. Contributions on investigations related to the theoretical development, experimental studies and particularly practical applications of structural health monitoring techniques will be incorporated in the Special Session.
【SS15】Monitoring techniques and their interpretation for the integrity assessment of bridges
Over the last years, various monitoring techniques have been developed and applied in the assessment of bridges. They are frequently referred as “structural health monitoring”. But how far are we with these techniques? How should we implement the information obtained by the monitoring techniques to evaluate the bridges? This session aims at bringing together international experiences related to bridge monitoring and focuses on assessment of bridge safety supported by monitoring. Presentations are solicited that address the following topics: monitoring techniques concerning bridge conditions or traffic loading, monitoring during load testing, development of safety indicators supported by monitoring techniques.
【SS16】Application of UHPC for bridge structures
Ultra-high performance concrete (UHPC) is a cement-based composite material with compressive strength greater than 120 MPa, good ductility and excellent durability. It has been attracting wide attention worldwide due to its excellent performance, and has been widely applied for not only bridges but various types of infrastructure in many countries. This session focuses on the recent applications and developments of UHPC in science and practice and to make clear the perspective in the future regarding maintenance, safety and management of bridges and civil infrastructure. Codes and specifications of UHPS applications for bridges are also discussed.
【SS17】Innovations and advances of composite techniques in bridge maintenance and rehabilitation
Composite Structures have been widely used in both new bridge construction and existing bridge maintenance and Rehabilitation. Particularly for existing bridges structures, the integration of new construction materials and structural members with existing structures is a general solution. This section covers nearly all the important problems concerning bridge rehabilitation using composite techniques, such as high performance composite decks etc. Both experimental and numerical simulation studies are welcome. Besides, state-of-the-art studies for composite technique for new bridge construction that can be used for bridge rehabilitation, are also covered in this special session.
【SS18】Advances in SHM of bridges and critical infrastructures
Farhad AnsariUniversity of Illinois at Chicago, College of Engineering, Chicago, USAfansari@uic.edu
Necati F. CatbasUniversity of Central Florida Orlando, Florida, USAcatbas@ucf.edu
Bridges and critical infrastructures in networks are essential for the economic, social and territorial cohesion of advanced and growing economies. These include transportation networks, such as bridges, tunnels, subways, railways, but also utilities, dams, pipelines, power transmission systems, communication networks, etc. Their design and construction is a significant cost, as their maintenance, considering that in some geographical areas existing ones are going to be older and older, and load conditions are growing up more than those initially planned, while their degradations decrease initial structural capacity. A key issue for an efficient maintenance is a correct reliability evaluation, that needs of an accurate evaluation of their structural health monitoring.
This Special Session will handle the recent advancements in performance assessment and monitoring of critical infrastructures including permanent and portable solutions as fiber optic sensors and accelerometer sensing units or infrared thermography, radar interferometry and other technologies. Wireless solutions are a highly attractive options for field applications and advances in this area are welcome. The use of artificial intelligence also for the management of big data in the context of the continuous monitoring of infrastructures is also of particular interest.
This session aims to attract academics, researchers, students and professional engineers involved in the advancement of monitoring solutions for critical infrastructures.
【SS19】Sustainability considerations for bridge management
The construction industry can play a very important role to secure the sustainability of our society. Especially, bridges and other infrastructures are the key for that. In designing a structure, engineers have to consider sustainability elements, which include social, economic and environmental aspects through its life-cycle, by using appropriate indicators. However, it is not so easy to find the best solution because we have to consider the balance of various aspects under complicated conditions. This special session discusses how we ensure the sustainability of bridges and other infrastructures in their life-cycles.
【SS20】Mechanisms of internal swelling reactions and those effects on structural performances
Jean-Michel TorrentiThe French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), Francejeanemail@example.com
Internal swelling reactions (ISRs) such as alkali-silica reaction (ASR) and delayed ettringite formation (DEF) are serious issues in terms of serviceability and safety. In order to prevent ISRs for newly-constructed structure and/or to manage the existing structures affected by ISRs, it is quite important to understand the mechanisms of ISRs and their influences on the structural performances based on the quantitative estimation of expansion in actual environments. This special session provides state-of-the-art research on these topics, newly developed testing methods, and the strategy for the maintenance and management of the structure affected by ISRs in the field.
【SS21】Analysis of fatigue members
Fatigue is one of the indispensable problems when the bridge engineers consider long term management of bridges. It has been known that bridge deck is a typical member which is subjected to fatigue problem. There has been a lot of experimental studies relating to fatigue both on steel and concrete, while numerical analyses handling fatigue problems are developing in a decade.
This special session aims to discuss design, damage prediction and maintenance plan of fatigue members based on any analyses. In particular, studies for concrete, cementitious materials and steel-concrete composite members are encouraged to be a part of this session.
【SS22】Advances in NDE/NDT for the bridge assessment
Chung C. FuUniversity of Maryland at College Park, MD, USAccfu@umd.edu
Changsheng XiangLanzhou University of Technology, Gansu, Chinaxiangcs@lut.cn
Nondestructive Testing (NDT) plays a critical role in assuring that structural components and systems perform their function qualitatively in a reliable and cost-effective fashion while Nondestructive Evaluation (NDE) is used to describe measurements that are more quantitative in nature. The demand for the development and efficient use of novel techniques comes from rapid, nondestructive, and accurate condition assessments and performance evaluations. The primary objective of the proposed session is to address advances in research, development, and deployment of technologies regarding assessment, monitoring and evaluation techniques of bridges. These may include: 1) development of new NDE technologies, 2) advances in NDT technologies, 3) integration of NDE/NDT, and 4) applications related to bridge condition assessment.
【SS23】Life-cycle analysis: Probabilistic modeling of the deterioration and recovery of bridges and transportation infrastructure, and the optimal allocation of resources
Structures and infrastructure suffer from deterioration over time due to aging, regular operation, harsh environmental conditions and extreme loading. Deterioration may considerably reduce the service life and reliability of such systems, and is becoming a growing problem for all types of structures and infrastructures around the world. Once a structure or infrastructure ceases to satisfy a desired performance or reliability level, it has to undergo a repair or reconstruction. There is a need to model the deterioration and recovery of structures and infrastructures, and to find the optimal allocation of resources to maximize their availability over time and reliability at any given time, while minimizing costs. This Special Session focuses on bridges and transportation infrastructure. It includes research on the modeling of deterioration and of recovery and resilience, on optimization of mitigation and recovery strategies, and on the overall life-cycle analysis.
【SS24】Rehabilitation and strengthening of concrete and steel structures with UHPFRC
Ultra High Performance Fiber Reinforced Concrete is impermeable and has high strength in hardened state, as well as flowable, self-compacting and slope-stable in fresh state. UHPFRC has superior mechanical properties and durability, and is suitable for various applications, including the rehabilitation and strengthening of existing structures. UHPFRC is applied to respond to the high demand of infrastructure maintenance in many countries. This Special Session aims to exchange and share recent achievements in this field to further explore the use UHPFRC to enhance existing reinforced concrete and steel bridges.
【SS25】Protective surface treatment for durability enhancement and service life extension of concrete bridges
The greatest challenge to the sustainability of concrete bridges comes from the deterioration of materials due to the ingress of harmful substances from external environments. Protective surface treatment through the use of water repellent agent or surface sealer proves to be a cost-effective solution for both the maintenance of existing and the durability enhancement of new concrete bridges. This special session is proposed to facilitate research exchanges and discussions on this important dimension.
【SS26】Advances in assessment, simulation, and retrofit of corroded bridges
Worldwide, more and more RC bridges are reaching the end of nominal life and corrosion of the re bars can led to serious damage. The correct evaluation of the capacity of bridges with corroded bars is of primary importance to evaluate the risk of collapse considering the modern definition of the action to date. This special session aims to share the most modern experimental and numerical studies: monitoring, identification, assessing of corrosion, the corroded bars behavior in structures, repairs and reinforcement strategies, techniques to reduce corrosion, transformation of existing bridges in integral bridges to reduce corrosion effects.
【SS27】ICT and 3D technology for maintenance and management of large-scale structures
In recent years, many efforts have been started to improve the productivity of the entire construction production system by introducing ICT and 3D technologies in all business processes ranging from surveying to design, construction, inspection and maintenance. The objective of this session is to encourage the state-of-the-art knowledge sharing of these technologies between industry and academia. The topics covers all aspects of them; e.g. bigdata analysis, platforms for knowledge sharing, data modeling, AI and IoT applications, laser scanning and photogrammetry, 3D object recognition/ modeling and other digitalization technologies. The research object is not limited to bridges but includes all kinds of large-scale structures.
【SS28】Risk control, smart operation and effective maintenance of long-span bridges: In conjunction with TC-18, ACECC
Long-span bridges form vital transportation networks and essential infrastructures for economic activity. It is, therefore, important to keep sound functions for a long-operation time. Recently, it is common that SHM technology and preventive maintenance strategy are implemented in those bridges. Besides, the potential risk of natural hazards is also increasing. This special session will discuss risk control, smart operation and effective maintenance of long-span bridges with using latest information technology and state-of-the-arts developments. In particular, TC-18 on the Adoption of Standard Operating Procedures for Design, Construction and Maintenance of Long-Span Bridges in the Asian Civil Engineering Coordinating Council (ACECC) supports this session by encouraging member countries to share their keen interests and recent activities.
【SS29】Data informatics for SHM of bridges
The importance of data is emphasized day by day with the operation and management of bridges based on state-of-the-art technology in SHM. This special session will share the best practice in utilizing field data obtained from a wide range of bridges and will provide a basis to discuss future directions. This session covers the area of field informatics, including topics such as: Assessment of operational effects; Automatic identification of structure properties and loads; Early detection and identification of damage; Aerodynamic monitoring; Automatic data processing of large databases; Fusion of data; Integration of SHM systems in the management of infrastructures; and Self-checking of sensors.
【SS30】Latest developments on the seismic response of integral abutment bridges
Bruno BriseghellaCollege of Civil Engineering, Fuzhou University, Chinabruno@fzu.edu.cn
Philip W. YenInternational Association of Bridge Earthquake Engineering, IABEE, USApyen@iabee.org
Integral abutment bridges (IABs) are rather common and popular due to their durability and absence of bearings and expansion joints. Monolithic connections between the deck and sub-structure enhance the structural redundancy and reduce the maintenance costs. However, soil-structure effects are induced by thermal variations, long-term effects and seismic loads. Several researchers have investigated the soil-structure interaction for IABs, but there is still a lack of common line design guidelines and codes. This Special Session intends to provide a discussion platform for the exchange of knowledge concerning latest research developments on seismic behavior of IABs. This special session is inviting contributions from both academic and industry experts, bridge operators and owners of transport infrastructure assets.
【SS31】Fatigue linked retrofitting, life extension and advanced assessment in metallic bridges
Shuichi OnoJapan Construction Method and Machinery Research Institute, Japanono@cmi.or.jp
Fatigue retrofitting and life extension techniques for steel and iron bridges have developed remarkably all over the world. This is due to the many bridges that are found to suffer fatigue damage due to ever increasing loads, inadequate fatigue design, deterioration, etc. Recent achievements in the field, include new post-weld treatments, bonded or unbonded strengthening, as well as advanced assessment. This Special Session aims to exchange and share recent worldwide achievements regarding life extension and retrofitting works. Studies for exploring advanced fatigue design and assessment methods and improvement techniques are particularly encouraged to present in this Special Session.
【SS32】Performance-based earthquake engineering: Seismic resilience for bridges
The special session aims at discussing the role of PBEE in quantifying earthquake risks and facilitating better informed planning and design of the built environment and exploring challenges to improve performance-based engineering to address specific aspects of resilience of bridges.
The following topics, but not limited to, are welcome:
- advanced probabilistic seismic hazard analysis
- probabilistic assessment of direct economic loss and collapse safety
- quantification of damage measures and associated repair/replacement costs
- quantifying factors that affect downtime, business interruption, and community functions direct damage and losses and their implications on disaster response and recovery
【SS33】Data-driven asset management - The Scandinavian way
Lars Fuhr PedersenSund & Bælt Holding A/S, Denmark
Transportation infrastructure supports economic growth and quality of life for citizens. Optimal technical and economic operation and maintenance (O&M) of transportation infrastructure, such as bridges, are crucial to support these goals. Today's bridge owners demand solutions that maximise reliability and availability, as well as minimise costs, environmental impacts and the probability of loss of life and limb. To accommodate this, it is important to take into account both experience from current O&M and the possibilities that come with new technologies. Common for both is that data and lean data management are in demand. Research and development of new technologies is a continuous process involving all stakeholders, including innovative bridge owners. This special session focus on applied new technologies, leanings from current asset management and future challenges and possibilities - all seen from a Scandinavian perspective.
【SS34】Design, construction and evaluation of pedestrian bridges
With the rapid growth of urban areas and population intensity, pedestrian bridges are widely constructed in metropolitan areas. Furthermore, in rural and touristic areas, long span, light weight, and flexible pedestrian bridges are being built for local people and tourists. This special session will provide a platform for researchers and practitioners to discuss the current state-of-the-art and technological advances in planning, design, construction, and evaluation of pedestrian bridges including safety, serviceability (deflections, vibrations), aesthetics, constructability, and maintenance. Invited researchers and practitioners as well as owners will present results from their recently completed or ongoing research work, case studies, and projects.
【SS35】Monitoring strategies for enhancing transport infrastructure resilience
Monitoring strategies are crucial in assessing rapidly and reliably the safety level, e.g. structural and geotechnical capacity, and the functionality, e.g. traffic capacity, of transport infrastructure assets. The importance of integrated monitoring systems emanates from the significance of the traffic disruptions and functionality loss of transport infrastructure. However, the vast of monitoring data and evidence, which is being made available on a daily basis to transport asset owners, remains unexploited. This includes terrestrial, e.g. data by CCTV cameras and mobile activity, monitoring of assets, and airborne data, e.g. InSAR, UAV/Drone sensors, hyperspectral imaging, aerial photography, and open-access crowd data, e.g. Google or Waze traffic data, population, weather and air pollution conditions.The Special Session intends to promote the exchange of knowledge concerning the use of monitoring systems toward well-informed quantitative risk analysis and resilience assessments for transport assets in an effort to efficiently manage assets, reduce maintenance costs and increase the resilience of our infrastructure.
【SS36】Machine learning-based SHM data analysis and condition assessment for bridges
Artificial Intelligence (AI) brings new opportunities for the development of SHM of Bridges. The AI techniques such as the machine learning, deep learning and computer vision will help us identify a new intrinsic evolution in the long-term performance of bridges in actual operational surroundings and loads. This SS is proposed to discuss and share the recent advanced machine learning and deep learning methods for SHM data analysis and assessment of Bridge. Potential topics may include, but are not limited to:
- Unsupervised/Supervised Learning for Bridge Structural System Modeling and Identification
- Deep Learning Algorithms and Their Applications
- Computer Vision for Bridge Assessment
- Structured Probabilistic Models (e.g., Bayesian Networks, Graphical Models, etc.)
- Data-Driven Structural Risk and Reliability Assessment
- Data Anomaly and Damage Detection
【SS37】BRIDGE|50 research project: Experimental testing on a 50-year-old PC bridge
BRIDGE|50 is a research project recently launched in Italy in the context of the Torino-Ceres construction works jointly with Politecnico di Milano and Politecnico di Torino. The project is part of a research agreement established among public authorities and private companies for a wide experimental campaign on a prestressed concrete viaduct dismantled after a lifetime of about 50 years. A set of 29 beams (25 I-beams and 4 box beams) and 2 pier caps have been moved and stored in a testing site. The on-site experimental activities include non-destructive diagnostic tests, full-scale load tests up to collapse, and samples collected for laboratory tests to be performed at Politecnico di Milano and Politecnico di Torino. The objective is gathering new data concerning the residual structural performance and life cycle safety and reliability of existing concrete bridges exposed to deterioration processes. This framework of data will provide knowledge advances for public authorities managing road networks and represent key information to improve existing methods for safety and residual lifetime assessment of reinforced and prestressed concrete structures. The results of the research project are expected to contribute a modern approach to life-cycle design of bridges and to improve safety, maintenance, and management of existing infrastructure systems. This Special Session is aimed at presenting the overall program and the preliminary results of the BRIDGE|50 research project (http://www.bridge50.org）
【SS38】Electro-chemical corrosion protection to extend the service life of concrete bridges
Corrosion of reinforcing steel leading to structural deterioration and failure of reinforced concrete structures is a serious problem for bridge owners. Short life of conventional repairs and durability of concrete bridges have been a concern for bridge engineers. Many transportation departments, universities and corrosion professionals are working on developing cost-effective strategies that can prevent and mitigate the rebar corrosion in concrete bridges. Electro-chemical corrosion protection technologies have been applied in bridge s since 1970s to extend the life of repairs and prolong overall service life of bridges. This mini-symposia aims to share new research findings, developments, and applications in this field.
【SS39】Bridge-vehicle interaction and their applications
The interaction of a vehicle traversing a bridge is well-researched but still challenging. Investigating this interaction using first principles, simulation and testing has led to better estimation of live loads, better design and assessment of bridges, and novel Structural Health Monitoring schemes.This mini-symposium attempts to bring researchers in bridge-vehicle interaction investigating new insights, methods or applications. Topics include but are not limited to theoretical and experimental studies on bridge-vehicle interaction dynamics; statistical characterization; live-loading; development, testing and demonstration of measurement sensors and devices; bridge reliability and lifetime health; Structural Health Monitoring and control; system identification and passenger comfort.
【SS40】Design expectations and actual field performance of existing bridges
Despite theoretical assumptions of suitable reliability, many types of structures do not exhibit the expected performance levels, revealing shortcomings in modeling and/or design approaches and in construction practice which, in some cases, can even bring to unexpected and sudden collapses.
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The aim of this Mini-Symposium is to call for contributions in the field of the assessments of existing structures, in the light of the damages suffered by supposedly robust structures and of the many drawbacks observed during the last decades.