[1]孙路,李廷辉.山区桥梁地震易损性及平均损失率分析[J].自然灾害学报,2022,31(05):104-110.[doi:10.13577/j.jnd.2022.0512]
 SUN Lu,LI Tinghui.Seismic fragility and average loss ratio analysis of bridge in mountainous area[J].,2022,31(05):104-110.[doi:10.13577/j.jnd.2022.0512]
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山区桥梁地震易损性及平均损失率分析
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
31
期数:
2022年05期
页码:
104-110
栏目:
出版日期:
2022-10-28

文章信息/Info

Title:
Seismic fragility and average loss ratio analysis of bridge in mountainous area
作者:
孙路13 李廷辉24
1. 湖州职业技术学院, 浙江 湖州 313000;
2. 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, 黑龙江 哈尔滨 150080;
3. 湖州市绿色建筑技术重点实验室, 浙江 湖州 313000;
4. 地震灾害防治应急管理部重点实验室, 黑龙江 哈尔滨 150080
Author(s):
SUN Lu13 LI Tinghui24
1. Huzhou Vocational & Technical College, Huzhou 313000, China;
2. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
3. Huzhou Key Laboratory of Green Building Technology, Huzhou 313000, China;
4. Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China
关键词:
山区桥梁易损性模型平均损失率损失比汶川地震
Keywords:
mountainous bridgefragility modelaverage loss ratioloss rateWenchuan earthquake
分类号:
U447;TU984.11+6
DOI:
10.13577/j.jnd.2022.0512
摘要:
为建立桥梁结构在地震作用下的概率易损性模型,基于汶川地震桥梁破坏数据分别得到了山区拱桥与梁桥的地震易损性曲线,并采用补充数据的方式完善了桥梁易损性模型。选择地震动峰值加速度(PGA)作为地震动参数,选用双参数对数正态分布作为易损性函数,利用极大似然估计得到桥梁结构易损性曲线。结合桥梁结构发生某一种破坏状态时的损失比,建立了桥梁结构的平均损失率模型。依据文中建立的桥梁易损性模型及平均损失率模型可以在将来发生类似地震时快速地进行地震损失评估。该易损性模型也可以应用在保险行业中,为其提供技术支持与参考。
Abstract:
To establish the probabilistic fragility model of bridge structure under earthquake action,the seismic fragility curves of the arch bridge and girder bridge in the mountainous area were obtained based on the failure data of the bridges in the Wenchuan earthquake,and the bridge fragility model was improved by using supplementary data.The peak ground motion acceleration(PGA)is selected as the ground motion parameter,and the lognormal distribution of two parameters is selected as the fragility function,and the fragility curve of the mountainous bridge structure is estimated by the maximum likelihood.Combined with the loss ratio of tunnel structure of a certain failure state,the average loss ratio model of the bridge structure is established.The fragility model and average loss ratio model established in this paper can be used to evaluate the earthquake loss rapidly in the event of similar earthquakes in the future.The fragility model can also be applied to the reinsurance industry to provide technical support and reference.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-5-10;改回日期:2021-9-30。
基金项目:国家重点研发项目(2018YFC1504401); 黑龙江省高等教育教学改革研究项目(SJGZ20200101); 湖州职业技术学院高层次人才专项课题 (2020GY22)
作者简介:孙路(1979-),女,副教授,博士,主要从事生命线抗震研究.E-mail:sunlu2007-2008@163.com
通讯作者:李廷辉(1992-),男,博士研究生,主要从事生命线抗震及易损性研究.E-mail:13836116409@163.com
更新日期/Last Update: 1900-01-01