摘要
设计并完成了土与结构动力相互作用体系的大型振动台模型试验,通过将同种加载条件下的刚性地基和柔性地基上结构地震反应进行对比,分析了SSI效应对一幢十层框架结构地震反应的影响。由试验结果可知:在SSI效应作用下,基底输入地震动的强度和频谱特性发生了显著的变化;由于SSI效应的作用,刚性地基和柔性地基上的结构地震反应存在较大差别,且在一定条件下,SSI效应对结构地震反应能起到减震作用。
The shaking table model tests of soilstructure dynamic interaction system are designed and carried out. Comparing the earthquake responses of structure which is built on rigid and soft soil, the effects of SSI on the earthquake response of a tenlayer frame structure. The results of the tests show that the intensity and spectral characteristics of input ground motions have being changed remarkably under the action of SSI effect; the earthquake response of structure on the soft soil is different from that of structure on the rigid base because of SSI effect. And, on cerntain conditions, SSI effect may redue the response of structure.
出处
《世界地震工程》
CSCD
2002年第4期47-54,共8页
World Earthquake Engineering
基金
土木工程防灾减灾国家重点实验室基金
中国地震局地震工程与工程振动开放实验室基金
江苏省自然科学基金联合资助
关键词
土
结构
动力相互作用
振动台试验
地震动特性
地震反应
soil-structure dynamic interaction
shaking table test
characteristic of ground motion
earthquake response
