[1]高大峰,张辉,吴冬冬,等.基于多地震动强度参数的中国多层木结构古建筑地震易损性研究[J].地震工程与工程振动,2019,39(03):041-51.[doi:10.13197/j.eeev.2019.03.41.gaodf.005]
 GAO Dafeng,ZHANG Hui,WU Dongdong,et al.Research on seismic fragility of ancient Chinese timber structures with multi-story based on multi-ground motion intensity parameter[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(03):041-51.[doi:10.13197/j.eeev.2019.03.41.gaodf.005]
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基于多地震动强度参数的中国多层木结构古建筑地震易损性研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年03
页码:
041-51
栏目:
论文
出版日期:
2019-06-30

文章信息/Info

Title:
Research on seismic fragility of ancient Chinese timber structures with multi-story based on multi-ground motion intensity parameter
作者:
高大峰1 张辉1 吴冬冬1 杨勇2
1. 西安建筑科技大学 土木工程学院, 陕西 西安 710055;
2. 西安航空学院, 陕西 西安 710077
Author(s):
GAO Dafeng1 ZHANG Hui1 WU Dongdong1 YANG Yong2
1. School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
2. Xi’an Aeronautical University, Xi’an 710077, China
关键词:
木结构古建筑地震动强度参数非线性时程分析易损性曲面
Keywords:
ancient timber structuresground motion intensity parameternonlinear time history analysisfragility surface
分类号:
TU366.2;P315.9
DOI:
10.13197/j.eeev.2019.03.41.gaodf.005
摘要:
为充分评估地震动特性对中国多层木结构古建筑易损性的影响,以西安城墙永宁门箭楼振动台试验模型为基础,通过ANSYS软件建立箭楼结构的有限元分析模型。以100条实际地震动作为地震输入,对有限元模型进行大量非线性动力时程分析并求出相应的最大层间位移角θmax;以峰值加速度PGA、震级M和震中距R为地震动强度参数,利用MATLAB软件对θmax、PGA、MR进行回归拟合,求出PGA和M、PGA和R组合情况下的结构的地震易损性曲面,并与仅考虑PGA参数的易损性曲线进行对比分析。结果表明:当震级大于7级或震中距小于10km时,仅考虑一个地震动强度参数的地震易损性曲线会降低中国木结构古建筑超越其各个破坏阶段的概率。
Abstract:
In order to fully evaluate the influence of seismic ground motion on the fragility of ancient Chinese timber structures, the finite element analysis model of embrasured watchtower structure which was based on the shaking table test model of Yongning Gate’s embrasured watchtower of Xi’an City Wall was established by means of ANSYS software and, the 100 actual seismic waves were selected as earthquake input, a lot of nonlinear dynamic time history analysis of finite element model is carried out and, the corresponding maximum angle θmax between any two floors was obtained. The peak ground acceleration(PGA), magnitude(M) and epicenter distance(R) were selected one by one and, the ground motion strength parameters, θmax, PGA, M and R were regressed by MATLAB software as well as the seismic fragility surfaces under the combination of PGA, M and PGA, R were obtained. The results were compared with those of the fragility curve which only considers the parameters of PGA. And the results show that when the magnitude of the earthquake is greater than 7 or the epicenter distance is less than 10km, the seismic fragility curve considering only one seismic ground motion strength parameter will reduce the probability of the timber structure exceeding the various failure stages.

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备注/Memo

备注/Memo:
收稿日期:2018-12-1;改回日期:2019-2-7。
基金项目:国家自然科学基金项目(51208411);陕西省文物局科技项目(2011-K-008)
作者简介:高大峰(1962-),男,教授,博士,主要从事建筑结构及其抗震研究.E-mail:a21402999@163.com
更新日期/Last Update: 1900-01-01