土木工程学报  2020, Vol. 53 Issue (S2): 190-197    
  结构工程 本期目录 | 过刊浏览 | 高级检索 |
基于CPU并行计算的概率地震需求#br# 分析与地震易损性分析
徐铭阳1,2 贾明明1,2 吕大刚1,2
1. 哈尔滨工业大学结构工程灾变与控制教育部重点实验室,黑龙江哈尔滨150090;
2. 哈尔滨工业大学土木工程智能防灾减灾工业与信息化部重点实验室,黑龙江哈尔滨150090
Probabilistic seismic demand analysis and seismic fragility#br#  analysis based on CPU parallel computing
Xu Mingyang1,2 Jia Mingming1,2 Lu Dagang1,2
1. Key Lab of Structure Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
2. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disaster of the Ministry of Industry and Information Technology,
Harbin Institute of Technology, Harbin 150090, China
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摘要 概率地震需求分析体现了不确定性从地震动强度参数到工程需求参数的传递过程,文中介绍并对比概率地震需求分析中云图法、单条带法与多条带法的优缺点。以MATLAB+OpenSEES实时交互方式,提出基于CPU并行计算架构的概率地震需求分析方法,显著提高分析效率。提出并行-云图法、并行-单条带法与并行多条带法,通过RC框剪结构的概率地震需求分析,开展不同层高RC框剪结构的地震易损性分析。研究表明:云图法的对数标准差普遍大于单条带法与多条带法,过高地估计了结构的抗震性能,而单条带法与多条带法在易损性中位值与对数标准差确定方法上存在差异,单条带法的对数标准差普遍低于多条带法。
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徐铭阳 贾明明 吕大刚
关键词 概率地震需求分析 CPU并行计算 云图法 单条带法 多条带法 RC框剪结构 地震易损性    
Abstract

Probabilistic seismic demand analysis reflects the transfer process of uncertainty from ground motion intensity measures (IMs) to engineering demand parameters (EDPs). Different probabilistic seismic demand analysis methods are compared in this paper, including cloud method, single strip method and multiple strips method. Based on the real-time interaction of MATLAB and OpenSEES, a probabilistic seismic demand analysis framework based on CPU parallel computing is proposed, which significantly improves the analysis efficiency. Combined with CPU parallel computing, the parallel-cloud method, parallel-single strip method and parallel-multiple strips methods are proposed. Through probabilistic seismic demand analysis of RC frame-shear wall structures, the seismic fragility analysis of RC frame-shear structures with different floors is carried out. The research shows that the logarithmic standard deviation of cloud method is generally greater than that of single strip method and multiple strips method. The seismic performance of the structure is overestimated. There are differences between the single strip method and the multiple strips method in determining the median value and the logarithmic standard deviation for the seismic fragility function. The logarithmic standard deviation of the single strip method is generally lower than that of the multiple strips method.

Key wordsprobabilistic seismic demand analysis    CPU parallel computing    cloud method    single strip method    multiple strips method    RC frame-shear wall structures    seismic fragility
    
引用本文:   
徐铭阳 贾明明 吕大刚. 基于CPU并行计算的概率地震需求#br# 分析与地震易损性分析[J]. 土木工程学报, 2020, 53(S2): 190-197.
Xu Mingyang Jia Mingming Lu Dagang . Probabilistic seismic demand analysis and seismic fragility#br#  analysis based on CPU parallel computing. 土木工程学报, 2020, 53(S2): 190-197.
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