地震与洪水作用下结构风险分析与设计研究进展  

Research Progress on Risk Analysis and Design for Structures under Multiple Hazards of Earthquake and Flood

作　　者：李钢[1] 秦佩瑶 董志骞 李宏男[1,2] LI Gang;QIN Peiyao;DONG Zhiqian;LI Hongnan(State Key Laboratory of Costal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;College of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《防灾减灾工程学报》2022年第2期237-250,共14页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家重点研发计划项目(2018YFD1100404);辽宁省“兴辽英才计划”项目(XLYC1902043);大连市高层次人才创新支持计划项目(2017RD04)资助。

摘　　要：我国是世界上地震与洪水灾害最为严重的国家之一,两种灾害影响范围广泛,且很多地区为两种灾害的双易发地区,同时考虑地震与洪水作用的结构风险分析与设计是防灾减灾领域研究的重要问题。综述了国内外地震与洪水易发区结构性能分析与设计理论的研究进展,统计分析了地震与洪水的历史数据,根据洪水成因将地震-洪水灾害划分为地震伴随暴雨洪水、地震引发溃坝洪水两类,明确了地震与洪水的联合成灾机制和不同概率模型。总结归纳了地震-洪水灾害的不同表现形式,包括地震-洪水冲击接续作用、洪水冲刷-地震接续作用、洪水浸泡-地震接续作用,论述了地震与洪水作用下结构响应分析及易损性分析的研究现状,着重介绍了洪水冲刷-地震接续作用下结构全寿命风险评估和设计方法的研究进展,为进一步开展地震-洪水灾害的其他表现形式研究提供了新的思路。总结分析表明,地震与洪水接续作用加重了致灾程度,增大了结构失效风险,基于全寿命周期的结构抗多灾设计方法,能够有效减少灾害影响和损失,对于工程防灾减灾具有重要意义。China is one of the few countries in the world most severely suffered from earthquake and flood disasters.The two kinds of disasters distribute widespreadly in our country,and many areas are prone to both disasters.Risk analysis and design for structures under multiple hazards of earthquake and flood are important issues in the field of disaster prevention and mitigation.The research progress on performance analysis and design theory for structures in earthquake and flood susceptible areas is reviewed.First,the historical data of earthquake and flood is statistically analyzed.On the basis of flood causes,the multiple hazards of earthquake and flood are classified into two types:earthquake accompanied with storm flood,and earthquake triggering dam-break flood.The hazard-forming mechanisms and probabilistic models of earthquake and flood are specified.Moreover,the different forms of earthquake and flood disasters are summarized,including earthquake-flood impact consecutive effect,flood scour-earthquake consecutive effect,and flood soak-earthquake consecutive effect.The researches on response analysis and vulnerability analysis for structures under earthquake and flood are reviewed.The researches on life-cycle risk assessment and design method for structures under flood scour-earthquake consecutive effect are particularly addressed,which provided a new direction for researches on other forms of earthquake and flood multi-disasters.The summary and analysis show that the consecutive effect of earthquake and flood will increase the extent of disasters and the failure risk of structures.The life-cycle-based structure design method of multi-disasters can reduce the impact and destruction of disasters effectively,which is of great significance for disaster prevention and mitigation in engineering.

关 键 词：地震 洪水 多灾害 风险分析 全寿命设计 

分 类 号：TU318[建筑科学—结构工程]