施工技术 2017年9月下 110 CONSTRUCTION TECHNOLOGY 第46卷第18期 D0I:10.7672/5j52017180110 成层场地条件下远场地震动传播特性试验研究* 王智猛1，张建经2，张明2，童心豪2 (1.中国中铁二院工程集团有限责任公司，四川成都610031； 2.西南交通大学土木工程学院，四川成都610031) [摘要]设计并完成了成层场地的大型振动台模型试验，研究了成层场地条件下远场地震动传播特性，研究结果表 明：从整体来说，当加载El Centro波和汶川卧龙波时，加速度放大系数峰值随岩层倾角的增加而增大，此增大趋势 不明显；加速度放大系数峰值随输人地震波峰值增加而增大，此增大趋势较为明显.对于不同岩层倾角的场地，傅 里叶谱的幅值均随着高程的增加而增加，在顶部碎石土场地中具有最大的傅里叶谱幅值，建于碎石土场地上的建 筑物将遭遇最大的地震动速度. [关键词]成层场地：动力特性；振动台试验：放大效应 [中图分类号]TU435 [文献标识码]A [文章编号]1002-8498(2017)18-0110-04 Study on Dynamic Characteristics of Layered Site Under Far Field Earthquake by Shaking Table Tests WANG Zhimeng' ZHANG Jianjing? ZHANG Ming2 TONG Xinhao2 (1.China Railway Eryuan Engineering Group Co.Ltd.Chengdu Sichuan 610031 China; 2.School of Civil Engineering Southacest Jiaotong University Chengdu Sichuan 610031 China) Abstract:A large-scale shaking table model test of layered site of nuclear power model was performed to study the dynamic response characteristics of seismic acceleration under different seismic intensity the research results show that:in the whole horizontal acceleration gradually along the elevation based on input seismic wave when the input wave is EL Centro wave and Wenchuan Wave.However this tendency of growth is not obvious which is opposite with the shaking amplitude of input wave At the same time the amplitude of Fourier spectrum gradually increases with the elevation the maximum value appears at the gravel site.Therefore when the structures is built on the gravel site the desig...
成层场地条件下远场地震动传播特性试验研究.pdf
