摘要
以北京市某典型单建式人防工程为研究对象,利用MIDAS GTS NX有限元建模,开展土-结构相互作用三维非线性地震反应分析。结果表明:随着输入地震动幅值的增大,结构峰值加速度随墙高逐渐增大;结构的层间相对位移随地震动强度的增大而进一步增大,最大层间位移角在规范要求范围内;对于典型单建式人防工程结构而言,中柱的内力反应最大,是结构抗震的薄弱环节。分析内容揭示了单建式人防工程在地震作用下的反应规律,研究结果为工程的抗震性能评估和抗震设计提供参考。
Taking a typical single building type civil defense engineering in Beijing as the research object,we analyzed the three-dimensional nonlinear seismic response of soil-structure interaction by using MIDAS GTS NX finite element modeling.The results show that with the increase of the input earthquake ground motion amplitude,the peak acceleration of the structure increases gradually with the wall height.The relative displacement of the interlayer of the structure increased with the increase of earthquake ground motion,and the maximum interlayer displacement angle is within the range of specification requirements.For the typical single building type civil defense engineering structure,the center column is the weak link of structural seismic resistance since it has the biggest internal force response.The analysis results in this paper illustrates the response law of single building type civil defense engineering under earthquake,and the research results could provide reference for the seismic performance evaluation and seismic design of single building type civil defense engineering.
作者
沈冠豪
蔡晓光
黄鑫
李思汉
徐洪路
SHEN Guanhao;CAI Xiaoguang;HUANG Xin;LI Sihan;XU Honglu(School of Geological Engineering,Institute of Disaster Prevention,Sanhe 065201,China;CEA Key Lab for Building Collapse Mechanism and Disaster Prevention,Sanhe 065201,China;Hebei Key Laboratory of Earthquake Disaster Prevention and Risk Assessment,Sanhe 065201,China;Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin150080,China)
出处
《防灾科技学院学报》
2022年第2期72-81,共10页
Journal of Institute of Disaster Prevention
基金
中央高校基本科研业务费(ZY20210314)。
关键词
单建式人防工程
地下结构
地震反应分析
数值模拟
MIDAS
GTS
NX
single building type civil defense engineering
underground structure
seismic response analysis
numerical simulation
MIDAS GTS NX
