摘要
以AP1000核电屏蔽厂房结构为研究对象,进行考虑土-结构相互作用的地震响应分析,探讨不同厚度和不同地表倾斜角度软岩场地对屏蔽厂房结构地震响应的影响。利用ABAQUS有限元软件建立了软岩层厚度分别为25、30、35、40m以及地表倾斜角度分别为0°、3°和6°的土-结构相互作用模型,实现了地震动输入。对计算所得楼层响应谱进行对比分析可知,软岩层较硬岩层对地震传播有一定的放大效应,软岩层厚度的增加会使峰值频率往低频方向移动;倾斜场地对楼层响应谱高频部分有一定的放大效应。该研究结果对软岩场地下核电厂抗震安全评价具有一定参考意义。
The AP1000 shield building structure model is used as the object of this study,and the seismic response analysis is carried out considering soil-structure interaction (SSI).The influence of soft rock thickness and ground surface slope on dynamic response of the containment structure is discussed.The soil-structure models with soft rock thicknessesof 25 meters,30 meters,35 meters and 40meters and ground surface slopes of 0 degrees,3 degrees and 6 degrees are established respectively using software ABAQUS.The ground motion input is achieved in our models.On the basis of comparison analysis of the calculated floor response spectrum,a certain seismic wave amplification effect can be observed in the soft rock layer than in the hard rock layer.The increase of the soft rock layer thickness will make the peak frequency move to the low frequency direction. The inclined site has a certain amplification effect on the high frequency part of the floor response spectrum.The results in this paper have certain referentialsignificance for the construction of nuclear power plant in the soft rock area.
作者
赵密
陈杨
高志懂
孙文达
杜修力
钟紫蓝
ZHAO Mi;CHEN Yang;GAO Zhidong;SUN Wenda;DU Xiuli;ZHONG Zilan(The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology,Beijing 100124,China)
出处
《防灾减灾工程学报》
CSCD
北大核心
2018年第6期897-903,935,共8页
Journal of Disaster Prevention and Mitigation Engineering
基金
国家自然科学基金项目(51421005,51738001)资助
