堤坝结构模型抗震试验分析

英文篇名：Experimental analysis on earthquake resistance and failure test of models for dam
中文刊名：四川建筑科学研究
英文刊名：Sichuan Building Science
作者：王磊 ; 凌程建 ; 李昕
英文作者：WANG Lei1 ; 2 ; LING Chengjian1 ; LI Xin2(1.Sichuan Institute of Building Research ; Chengdu 610081 ; China ; 2.Dalian University of Technology ; Dalian 116024 ; China)
中文关键词：模型试验 ; 抗震性能 ; 模态特性
英文关键词：model test ; seismic function ; mode property
出版日期：2010-04-25
机构：四川省建筑科学研究院;大连理工大学土木水利学院;
年：2010
期：02
出版单位：四川建筑科学研究

摘要

对某堤坝结构进行了大型振动台模型试验,分析了在不同密度和不同水位条件下模型的抗震性能,研究了堤坝模型结构在微振和强振作用下的动力特性及地震响应。研究认为:微振条件下,堤坝结构处于弹性范围,具有明显的模态特性;在强振条件下堤坝结构响应加速度随输入地震加速度峰值的增加而增大;随着输入地震动强度的增加,堤坝结构卓越频率逐渐降低,加速度放大倍数逐渐减小,直至接近1。
Based on large-scale model test of dam,the seismic analysis of dam considering the difference of density and water level,the earthquake-resistance properties of the models of dam structure are analyzed and draw that density and water level have influence on the dynamic property of models.The researches showed that the natural frequency of models decrease and the acceleration amplification factor at the top of models increases with the increases of excitation acceleration.

引文

[1]蔡袁强,钱磊,凌道盛,吴世明.钱塘江防洪堤地震液化及稳定分析[J].水利学报,2001,(1):57-61.
    [2]徐长节,蔡袁强.杭州钱塘江防洪堤抗震分析[J].岩土力学,2006,(1):67-72.
    [3]汪闻韶,金崇磐,王克成.土石坝的抗震计算和模型实验及原型观测[J].水利学报,1987(12):1-14.
    [4]YOSHIKI Y,KOHJI T.Settlement of buildings on saturated sand during earthquake[J].Soils and Foundations,1977,(1):56-68.
    [5]HARdER L F.Performance of Earth Dams During the Loma Prieta Earthquake,Proc.of the Second International Conference on Re-cent Advances in Geotechnical Earthquake Engineering and Soil Dynamics,1991:1613-1629.
    [6]林皋,朱彤,林蓓.结构动力模型试验的相似技巧[J].大连理工大学学报,2000,(1):1-8.