摘要
为了研究高台基和土-结构相互作用对结构地震反应的影响,以西安钟楼为研究对象,建立了钟楼的上部木结构、上部木结构-高台基和上部木结构-高台基-地基的三维有限元模型。选取了兰州波按照多遇地震和罕遇地震进行了地震反应分析,得出高台基对上部木结构的地震响应起放大作用,表明地震响应应该考虑高台基的影响。当考虑土与结构相互作用时,顶层的振动相对于模型1和模型2分别放大了13.53倍和2.27倍,因此对钟楼结构进行地震响应分析时必须考虑土与结构的相互作用。
In order to study the influence of high-station base and soil-structure interaction on the structure seismic responds, 3-D finite element model of Xi＇ an Bell Tower which includes wood structure and high-station base and foundation is established in this paper. According to the frequent earthquake and rare earthquake, Lanzhou wave is adopted to analyze the seismic response of Xi＇ an Bell Tower. It is shown the vibration of wood structure is magni- fied by high-station base, so high-station base must be considered in seismic response analysis. When soil-structure interaction was considered, compared with model 1 and 2, the top vibration of wood structure is respectively magni- fied 13.53 times and 2.27 times, therefore soft-structure interaction should be considered in the seismic response analysis of Xi＇ an Bell Tower.
出处
《世界地震工程》
CSCD
北大核心
2017年第3期136-141,共6页
World Earthquake Engineering
基金
国家自然科学基金项目(51378245)
国家基金主任基金项目(51248003)
陕西省科学技术研究发展计划项目(2013K13-02-08)
关键词
西安钟楼
有限元
地震响应
Xi＇ an bell tower
finite element
seismic response
