大跨度桥梁连续倒塌分析与设计综述  

REVIEW ON PROGRESSIVE COLLAPSE ANALYSIS AND DESIGN OF LARGE-SPAN BRIDGES

作　　者：吕文高 鲍煊平 何政[2] LYU Wen-gao;BAO Xuan-ping;HE Zheng(Architectural Engineering College,Guizhou Minzu University,550025,Guiyang,China;School of Civil Engineering,Dalian University of Technology,116024,Dalian,Liaoning China)

机构地区：[1]贵州民族大学建筑工程学院,贵阳550025 [2]大连理工大学土木工程学院,辽宁大连116024

出　　处：《建筑技术》2021年第10期1200-1204,共5页Architecture Technology

基　　金：国家自然科学基金(52068010);贵州省科学技术基金资助项目(黔科合基础-ZK[2021]一般291);贵州民族大学自然科学类校级基金项目(GZMU[2019]YB28);国家重点基础研究发展计划项目(2013CB036305)。

摘　　要：大跨度桥梁连续倒塌是重要的桥梁安全问题,但目前针对该方面的研究工作较少。基于目前研究现状,从灾害作用(地震、船桥碰撞、爆炸等)、灾变损伤演化特点、连续倒塌分析的最新成果、抗连续倒塌能力设计等方面分析诱发大跨度桥梁连续倒塌的灾害作用和灾变损伤演化机理。结合建筑抗连续倒塌设计规范,提供了大跨度桥梁的抗连续倒塌设计规范制定的参考建议。Progressive collapse is a crucial safety issue for large-span bridges.However,little research has been carried out on this aspect so far.Based on the current research situation,disastrous actions and disaster-induced damage evolution mechanism that could trigger progressive collapse of large-span bridges were critically reviewed on the following aspects,such as disastrous actions(e.g.earthquake,vessel-bridge collision,blast,etc.),characteristics of damage evolution process,latest achievements in progressive collapse analysis,and design method of collapse resistance.With references of current design codes of collapse resistance for building structures,some suggestions on development of design codes for progressive collapse resistance of large-span bridges were proposed.

关 键 词：大跨度桥梁 连续倒塌 灾变机理 灾害发生概率 

分 类 号：TU31[建筑科学—结构工程]