工程可靠性与随机力学国际联合研究中心

2024年第4期（总第78期）学术报告

工程力学研究中心第28期学术报告

文远讲坛276期

报告主题

TOPIC

基于混凝土单元薄膜效应的连续倒塌鲁棒性建模与大型试验

Modelling and Large-Scale Testing of Membrane Action in Concrete Elements in Relation to Progressive Collapse and Robustness

报告人

SPEAKER

Prof. Robby Caspeele

比利时根特大学教授

科技部高端外国专家

报告时间

TIME

2024年4月25日（周四）下午14:00-15:00

报告地点

VENUE

同济大学土木大楼 A305

主持人

CHAIR

陈建兵教授、彭勇波教授

联系人：律梦泽博士

报告内容

Abstract

Structural robustness has become an important research topic in the engineering community. Several structural collapses in the past decades increased the public awareness and stressed the importance to consider progressive collapse and structural robustness during the design in relation to human safety and economic considerations. When in a concrete structure a member is lost due to a foreseen or unforeseen accidental event, compressive and tensile membrane action in beams and slabs can be activated and can considerably increase the load carrying capacity of the structural system. The alternate load path created in such a way can often prevent a progressive collapse and hence increase the robustness of concrete structures. In this lecture, an overview is given of the research that has been executed within the research group of the speaker over the last decade. Among others, a unique set of experimental large-scale investigations on one-way reinforced concrete slabs as well as prestressed hollow core slabs has been executed, focusing on the quantification of compressive and tensile membrane action. These results served as validation for the development of advanced numerical modelling of the investigated phenomena and enabled to perform parameter studies, probabilistic simulations, and the quantification of structural reliability and robustness. Furthermore, also the effect of restraint conditions, dynamic effects, FRP strengthening, reinforcement corrosion and fire conditions on membrane action in concrete beams and slabs has been investigated. In this lecture an overview of the most important findings will be provided.

报告人简介

Speaker Bio

Robby Caspeele is professor in the field of Structural Reliability at Ghent University (UGent) since 2013 and one of the technical directors of the Magnel-Vandepitte Laboratory for Structural Engineering and Building Materials. He received his MSc degree in Civil Engineering in 2006 and his PhD in Civil Engineering in 2010. His main areas of expertise relate to full-probabilistic and semi-probabilistic structural reliability analysis and risk management of structures, structural robustness, analysis of concrete and steel structures, assessment of existing structures, production and conformity control, numerical simulation techniques and large-scale testing. He is author of more than 75 publications in peer-reviewed journals and over 200 papers in international scientific conference proceedings. He is also strongly involved in international committees and working groups related to the development of technical guidelines and standards. Among others, he is a board member of the Joint Committee on Structural Safety, co-convenor of fib Commission 3 on existing structures and chair of the Belgian mirror committee for the Eurocodes.