桥梁多灾害研究综述

发布时间：2019-06-11 13:13

【摘要】：多种极端灾害给桥梁带来的严重后果强调说明了桥梁多灾害设计研究的重要性和必要性,而目前国内外的桥梁设计规范并没有考虑多种极端灾害的共同作用。首先回顾了多灾害理论在桥梁设计中的提出和发展,以及存在的问题。很多学者进行了两个极端荷载下桥梁多灾害响应的尝试,包括用优化理论寻找设计最优解、用试验验证多灾害设计的桥梁构件、用实测数据进行易损性分析以及用分项失效概率理论进行多灾组合等。进而介绍了几种主要的荷载组合理论在多灾害组合中应用。基于全寿命理论的桥梁设计越来越受到研究者的重视,它能够在桥梁全生命周期中考虑多灾害等因素,是未来多灾害研究的重要方向。
[Abstract]:The serious consequences of various extreme disasters on bridges emphasize the importance and necessity of bridge multi-disaster design research, but the bridge design codes at home and abroad do not consider the joint action of a variety of extreme disasters. Firstly, the proposition and development of multi-disaster theory in bridge design are reviewed, as well as the existing problems. Many scholars have tried to respond to bridge multi-disaster under two extreme loads, including using optimization theory to find the optimal solution of design, and using experiments to verify the bridge components designed by multi-disaster. The vulnerability analysis is carried out with the measured data and the multi-disaster combination is carried out by using the partial failure probability theory. Furthermore, the application of several main load combination theories in multi-disaster combination is introduced. Bridge design based on life-span theory has been paid more and more attention by researchers. It can consider multiple disasters and other factors in the whole life cycle of bridges, and it is an important direction of multi-disaster research in the future.
【作者单位】：中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室;浙江大学建筑工程学院;武汉经济开发区(WEDZ)城乡建设局建设工程服务中心;
【基金】：国家自然科学基金资助项目(51308510) 基本科研业务专项经费项目(2012A02)
【分类号】：U445.7

【参考文献】