基于静力推覆分析的主厂房结构地震易损性研究  

Research on Seismic Fragility of Main Building Based on Static Pushover Analysis

作　　者：李庆文 胡扬 张雯[1] LI Qingwen;HU Yang;ZHANG Wen(China Energy Engineering Group Liaoning Electric Power Survey&Design Institute Co.,Ltd.,Shenyang 110170,China;Institute of Earthquake Mechanics of China Earthquake Administration,Harbin 150080,China)

机构地区：[1]中国能源建设集团辽宁电力勘测设计院有限公司,辽宁沈阳110170 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《电力勘测设计》2024年第9期63-68,共6页Electric Power Survey & Design

摘　　要：SPO2IDA方法利用静力推覆的骨干线近似估计增量动力分析曲线,是一种以静力推覆分析为基础的参数分析方法。SPO2IDA方法从静力推覆曲线中提取信息,并产生必要的极限状态响应的统计估计。在SPO2IDA方法的基础上,提出基于静力推覆分析的地震易损性分析方法,采用该方法对火电厂主厂房结构进行地震易损性分析,得出该结构对应4个极限状态的易损性曲线,并与基于增量动力分析法的地震易损性分析方法结果进行对比。研究表明,基于静力推覆分析的地震易损性分析结果能够提供合理可靠的主厂房地震易损性数据。SPO2IDA method approximately estimates the incremental dynamic analysis curves by the backbone line of static pushover,which is a parameter analysis method based on static pushover analysis.SPO2IDA method extracts information from the static pushover curve and produces the necessary statistical estimation of the limit states'responses.On the basis of SPO2IDA method,puts forward a seismic fragility analysis method based on static pushover analysis,and uses this method to analyze the seismic fragility of the main building structure of a thermal power plant,and obtains the fragility curves of the structure corresponding to four limit states,and compares the results with those of the seismic fragility analysis method based on incremental dynamic analysis.The research shows that the seismic fragility analysis results based on static pushover analysis can provide reasonable and reliable seismic fragility data of the main building.

关 键 词：主厂房 地震易损性 静力推覆 SPO2IDA方法 增量动力分析 

分 类 号：TM621[电气工程—电力系统及自动化] TU311.2[建筑科学—结构工程]