拱坝自由场地震输入和反应  

EARTHQUAKE INPUT AND FREE-FIELD MOTION RESPONSE OF ARCH DAMS

作　　者：陈厚群[1] 侯顺载[1] 王均 

机构地区：[1]水利水电科学研究院

出　　处：《地震工程与工程振动》1990年第2期53-64,共12页Earthquake Engineering and Engineering Dynamics

摘　　要：本文阐述通过地震自由场地表运动的反演分析、正演计算确定坝址河谷自由场地震运动的途径和拱坝自由场地震输入多点激振的合理的抗震分析方法。在编制完成计算程序的基础上,选取东江双曲拱坝进行了实际地震记录的自由场输入反应分析,探讨了多种因素对拱坝自由场反应的影响,取得了拱坝抗震分析自由场反应的初步结果。A deconvolution analysis of accelerograms recorded at ground suifacc,convolution method of determining free-field motions of the infinite canyon and multiple-support technique of arch dams using free-field seismic input are described in this paper. A program for the proposed procedure was coded. The double-curvature arch dam at Dongjiang was selected as an example to illustrate the effect of free-field seismic input on the response of arch dams using actual accelerograms. A scries of factois influencing on the free-field input response of arch dam are investigated and discussed. Some preliminary conclusions on free-field input with multiple excitation analysis of arch dams are drawn from the results.

关 键 词：拱坝 自由场 地震 输入 反应 

分 类 号：TV642.4[水利工程—水利水电工程]