Fabio Biondini
Politecnico di Milano
Milano, Italy

Dan M. Frangopol
Lehigh University
Bethlehem, USA

Structural systems, due to their inherent vulnerability, are at risk from aging, fatigue and deterioration processes due to aggressive chemical attacks and other physical damage mechanisms. The detrimental effects of these phenomena can lead over time to unsatisfactory structural performance under service loadings or accidental actions and extreme events, such as natural hazards and man-made disasters. The exposure to combined effects of discrete and continuous damaging events pose a major challenge to the field of structural engineering. The classical time-invariant structural design criteria and methodologies need to be revised to account for a proper modeling of the structural system over its entire life-cycle by taking into account the effects of deterioration processes, time-variant loadings, and maintenance and repair interventions under uncertainty. Despite these needs and recent research advances, life-cycle concepts are not yet explicitly addressed in structural design codes. Moreover, the level of structural performance is generally specified with reference to structural safety and reliability. However, when aging and deterioration are considered, the evaluation of the system performance should account for additional probabilistic indicators aimed to provide a comprehensive description of the life-cycle structural resources, such us redundancy, robustness and resilience. Based on these considerations and following the successful events organized at IALCCE2016 and IALCCE2018, the purpose of this IALCCE2020 Mini-Symposium is to present principles, concepts, methods, and strategies for measuring and evaluating the life-cycle risk, reliability, redundancy, robustness and resilience of deteriorating structural systems under multiple hazards, with emphasis on the interaction between seismic and environmental hazards.
Note: Mini‐Symposium 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 Structural System Performance Indicators.

Mitsuyoshi Akiyama
Waseda University
Tokyo, Japan

Dan M. Frangopol
Lehigh University
Bethlehem, USA

Tohoku University
Sendai, Japan

The aim of this Mini-Symposium is to attract papers that deal with the use of advanced computational and/or experimental techniques for evaluating the life-cycle performance of aging structures and infrastructures in an aggressive environment. For these structures, multiple environmental and mechanical stressors lead to deterioration of structural performance. Such deterioration will reduce their service life and increase the life-cycle cost associated with maintenance actions. This Mini-Symposium covers current theoretical and experimental efforts made in the assessment and future prediction of performance, maintenance and strengthening of structures and infrastructures in an aggressive environment.

Edwin Reynders
KU Leuven
Leuven, Belgium

Geert Lombaert
KU Leuven
Leuven, Belgium

Eleni Chatzi
ETH Zürich
Zürich, Switzerland

Costas Papadimitriou
University of Thessaly
Volos, Greece

A main goal of vibration-based structural health monitoring and damage identification is assessed structural condition via vibration signatures. For civil structures response-only data is often used due to difficulties associated with forced excitation of large structures. This followed by inference of grey/black-box models, or updating of physics-based models. This mini-symposium welcomes novel contributions on vibration-based structural health monitoring, damage identification and parameter, input and load estimation, using black-box as well as physics-based models. Relevant topics include linear and nonlinear system identification, parameter and state estimation, model updating and correlation, optimal experiment design, and the exploration of novel sensing techniques.

Jie Li
Tongji University
Shanghai, China

Xiangling Gao
Tongji University
Shanghai, China

Xiaodan Ren
Tongji University
Shanghai, China

Reinforced concrete (RC) structure has been extensively used in the civil engineering. However, owe to the corrosive medium in the atmosphere, underground water, sea water and deicing salt, durability and bearing capacity of the reinforced concrete structure are facing challenge. The service year of the RC structure cannot satisfy the designed service life. To this end, models and methods to describe the performance of concrete, steel bar and time-dependent reliability during structural life-cycle is the main topic. Those who have been working on related fields are cordially invited to exchange their ideas and research outcome in this mini symposium.

You Dong
The Hong Kong Polytechnic University
Hong Kong, China

Dan M. Frangopol
Lehigh University
Bethlehem, USA

Due to the frequent occurrence of hazards and their effects on life-cycle performance, sustainability, risk, and resilience issues have become increasingly important. Considering climate change effects, hazard intensity and probability of simultaneous occurrence of multiple hazards are expected to increase. This mini-symposium brings together researchers from academia and industry to address problems of structural design, safety, and management under multiple natural hazards in a life-cycle context. Potential topics include: vulnerability and risk assessment, performance-based engineering, and hazard mitigation and management. Emphasis will be placed on topics dealing with effects of multiple hazards, climate change, risk assessment, cost-benefit analysis of adaptation, and life-cycle engineering. Practitioners as well as researchers in the areas of structural and sustainable engineering are encouraged to participate.

Chul-Woo Kim
Kyoto University
Kyoto, Japan

Patrick J. McGetrick
Queen's University Belfast/ National University of Ireland Galway
Belfast, UK/ Galway, Ireland

Álvaro Cunha
FEUP
Porto, Portugal

Feng-Liang Zhang
Harbin Institute of Technology (Shenzen)
Shenzen, China

Structural health monitoring (SHM) systems target early indication of deterioration in structures and support implementation of remedial strategies before damage leads to structural failure. As a result, adoption of SHM applications in industry is on the rise, however, fast-developing SHM technology (e.g. recent growth in UAV applications), has not yet been widely accepted by practitioners and bridge owners despite significant research activity; this is affected by limited satisfactory results in real-world applications. The aim of this mini symposium is to provide a forum in which scientists and engineers from academia and industry can present their state-of-the-art research on novel SHM technologies, focusing on practical real-world applications and successes.

Frank den Heijer
HAN university of applied sciences
Arnhem, the Netherlands

Wen Xiong
Southeast University
Nanjing, China

Hiroshi Yokota
Hokkaido University
Hokkaido, Japan

Markus Hoffmann
Vienna University of Technology
Vienna, Austria

A large amount of civil infrastructure in the public domain has flood risk reduction, water management, navigation or mobility related functions, or a combination of these. Existing infrastructure generally has long life spans and is not always designed to adapt for changes in use, climate or regulations. A considerable part of the infrastructure is reaching the end of its service life. Considerable investments are required for building, renovating and maintaining these infrastructures.

This Mini-Symposium will focus on the life cycle assessment and management of infrastructure like dikes, bridge piers/piles, sluices, locks retaining walls, sewage and drinking water, harbor infrastructures, reservoirs and dams, etc; The focus of their management is shifting from condition and risk management, to predictive and adaptive management and from asset level to system or regional level. These trends require to search for smart solutions from technical, financial and governance point of view, to meet present day adaptive, societal and environmental requirements. The objective of this Mini-Symposium is to collect and exchange best approaches and innovative practices in Life-Cycle Engineering in water infrastructure.

The papers in this Mini-Symposium will show:

• new Life-Cycle management approaches to the problem, like adaptation pathways for changing demands and requirements, scenario analysis, societal cost benefit approaches, system optimization and planning;
• new Life-Cycle engineering approaches for life time prediction: intervention levels, deterioration models, inspection and monitoring;
• new life time extension approaches: condition assessment, repair and renovation techniques, design, probabilistic modeling and maintenance optimization.

Y.Q. Xiang
College of Civil Engineering and Architecture, Zhejiang University
Hangzhou, China

Qingtian Su
Tongji University
Shanghai, China

Gang Wu
Southeast University
Nanjing, China

Yu Chen
College of Civil Engineering, Fuzhou University
Fuzhou, China

Jin-feng Wang
College of Civil Engineering and Architecture, Zhejiang University
Hangzhou, China

Yuliang He
School of Civil Engineering, Shaoxing University
Shaoxing, China

Presently, due to the advantages of composite structures they are widely used in bridge engineering. With the application of HPC, UHPC and HPS in composite bridge, this composite structures are endowed with new vitality and more convenient application. The Mini-symposia (MS) on Composite Structures will emphatically discuss some of key Issues related to study and advancement on life-cycle performance of steel-concrete composite structures and to share recent advancements. It will focus on:

A : Performance of new composite material and structures
B : Life-cycle behaviour and analysis of Steel-HPC and UHPC composite girder bridges and structures
C : R & D of new shear connector in composite structures
D : Fatigue performance of composite girders and structures
E: Durability of composite girders and structures

Tobia Zordan
Bolina Ingegneria Ltd.
Venice, Italy

Alp Caner
METU
Ankara, Turkey

Matteo Gaiardo
AECOM
Los Angeles, USA

Xin Ruan
Tongji University
Shanghai, China

Keeping the function of buildings and infrastructures uninterrupted is of significance to their long-term service performance. As buildings and infrastructures are influenced by environment all the time, it is necessary to study the characteristics of environment and its possible effect on buildings and infrastructures. The concept of Value Protection of built environment deals with a number of uncertainties related to life-cycle and risk assessment and represents an interesting issue both for new buildings and infrastructures and for existing ones. For engineers as well as for any stakeholders involved in constructions process, this topic represents a real key-feature for a sustainable development, especially for seismic areas and, in general, for areas/single constructions exposed to extreme events (natural or caused by humans).

The aim of this Mini-Symposia is to bring together researchers in related field to share their accomplishments, findings and ideas. Contributions on but not limited to Value Protection, life-cycle management, sustainable development, and effect of extreme events on buildings and infrastructures are welcome.

Dong Xu
Tongji University
Shanghai, China

Jose Coderque Turmo
Universitat Politècnica de Catalunya
Barcelona, Spain

Jun Lei
Harbin Institute of Technology (Shenzen)
Shenzen, China

Structures might deteriorate due to imprecise design, environmental erosion, excessive load, material aging, etc. This will cause the malfunction of the structures regarding the requirement of serviceability, performance and safety in the life cycle of structures. To prevent structural defect and even sudden failures of structures, different types of indices have been proposed to evaluate the condition of newly built or existing structures. Some latest findings on stress-based, deformation-based indices will be presented. The main content of the mini symposium is to exchange the state-of-the-art and effective indices for condition assessment of structures under practical scenarios and to compare them with other methods to assess structural safety, and the implications of different technologies for SHM. Practitioners and researchers are welcome to discuss and share experience.

Yonglai ZHENG
Tongji University
Shanghai, China

Hongguang XU
Anhui Transport Consulting & Design Institute Co., LTD
Hefei, China

Liu DON
Louisiana Tech University
Ruston, USA

Rujin MA
Tongji University
Shanghai, China

Zichao PAN
Tongji University
Shanghai, China

Water is one the most important resources to the national economic and social developments. The hydraulic engineering provides reasonable and effective distribution and utilization of water resources to the national economy. This SS is proposed to discuss and share recent academic research work and project studies in the field of hydraulic engineering.

The topics of this SS include, but no limited to,

• Novel hydraulic structures;
• Theoretical analysis and numerical simulation of hydraulic structure under different loadings;
• Durability issues of the hydraulic structures;
• Project management and quality control;
• Influence of hydraulic engineering on ecology.

Robby Caspeele
Ghent University
Ghent, Belgium

Fabio Biondini
Politecnico di Milano
Milano, Italy

Alfred Strauss
University of Natural Resources and Life Sciences
Vienna, Austria

Wouter Botte
Ghent University
Ghent, Belgium

Current practice on the assessment of existing concrete structures subject to aging, deterioration and damage processes often lacks thorough life-cycle reliability and risk-based evaluations. The assessment is often performed on the basis of guidelines which rely on the (subjective) experience of the investigator and improvements are necessary to quantitatively incorporate in this process available data and results from inspection, monitoring and/or laboratory investigations.

In this mini-symposium, focus is given to new developments in relation to:

• Modelling of deterioration processes and associated structural responses of concrete structures;
• Development of quantitative methods to assess existing concrete structures in relation to reliability and risk-based performance criteria;
• Application of Bayesian updating approaches to incorporate and exploit information from inspections, monitoring and/or testing for updating instantaneous and time-dependent performance predictions;
• Modeling of spatial variability in properties and degradation of concrete structures in relation to performance predictions;
• Time-dependent performance prediction approaches;
• Conceptual assessment strategies;
• Case studies.
• Novel hydraulic structures;
• Theoretical analysis and numerical simulation of hydraulic structure under different loadings;
• Durability issues of the hydraulic structures;
• Project management and quality control;
• Influence of hydraulic engineering on ecology.

The mini-symposium will also report on advances and new developments within fib and SEI/ASCE technical committees working on life-cycle assessment of existing concrete structures.

Lizhen Huang
Norwegian University of Science and Technology (NTNU)
Trondheim, Norway

Erling Onstein
Norwegian University of Science and Technology (NTNU)
Trondheim, Norway

Junfeng Ge
Huazhong University of Science and Technology
Wuhan, China

Xiufeng Liu
Technical University of Denmark
Lyngby, Denmark

Weizhuo Lu
Luleå University of Technology
Luleå, Sweden

Guoqing Jing
Beijing Jiaotong University
Beijing, China

As so called “40%” sector, built environment (buildings and infrastructure) are identified as a key sector to global warming mitigation. Recently, Building information modelling (BIM), IOT, and AI, are proposed to improve the efficiency for construction and running built environment. The built environment, in particular, needs big data tools and architectures for to extend service life and minimize the life cycle energy and emissions. Digitalization of built environment will play an important role to achieve UN SDG 9, 11, and 12. As such, this MS will invite multidiscipline studies to discuss “how digitalization can support decarbonization of built environment with life cycle perspective”.

Bruno Briseghella
Fuzhou University
Fuzhou, China

Christian Cremona
Bouygues Construction SA
Paris, France

Steve Denton
WSP
London, UK

Davide Lavorato
University of Roma Tre
Roma, Italy

Camillo Nuti
University of Roma Tre
Roma, Italy

Transportation networks, including bridges, railways, tunnels, subways, utilities, dams, pipelines, power transmission systems, communication networks, etc. are fundamental for the economy in all the world. Unfortunately, in most of the countries, a big amount of them is reaching the end of their nominal life due to deterioration of the construction materials and in particular of corroded rebars in reinforced concrete structures. This Mini-Symposium aims to share the recent advances and code implementations in assessing, simulation, repair and retrofit of aged infrastructures. It is intended to cover the following key topics (but not limited to): monitoring, identification, assessing of corrosion, material deterioration, modelling, codes, repairs and retrofitting strategies, techniques to reduce corrosion.

Min Hu
Shanghai University
Shanghai, China

Ying Chang
Shanghai Urban Operation Group
Shanghai, China

Tunnel is a typical traffic infrastructure, which is more complex than other infrastructures such as highway and bridge, because of the variety of equipment and complex spatial structure. Thus, there are many challenges in life cycle management of tunnel. This Symposia will invite five speakers to introduce the newest research result from automatic inspection and analysis technology of tunnel defects, tunnel spatio-temporal data organization, life-cycle oriented Operation & Management information platform framework and the data-driven tunnel life-cycle evaluation and decision-making. Meanwhile, this symposia will also discuss the application effect of these technologies in Hangzhou Wenyi Road Underpass and Shanghai Dalian Road Tunnel.