震后黄土动力学特性试验研究  

Experimental study on the dynamic characteristics of post-earthquake loess

作　　者：王峻[1,2] 王强[1,2] 王杰民[3] 

机构地区：[1]中国地震局兰州地震研究所,兰州730000 [2]中国地震局地震预测研究所兰州科技创新基地,兰州730000 [3]兰州大学资源环境学院,兰州730000

出　　处：《水文地质工程地质》2010年第4期63-67,共5页Hydrogeology & Engineering Geology

基　　金：国家自然科学基金资助项目(50978239);中国地震局兰州地震研究所论著(LC2010006)

摘　　要：为了研究地震区震后黄土的动力性质,为黄土地区灾后重建提供合理可靠的地震安全性评价参数,本文通过对甘肃省永登地震区震后黄土的动力特性试验研究,探讨了震后黄土的土动力学特性,研究结果表明,震后黄土在动荷载作用下的动力学性质与该地区原状黄土的动力学性质有较大的差异,主要表现在动弹性模量地降低和残余变形(震陷)的明显增大特性。The paper studies on the dynamic characteristics of post-earthquake loess for supplying reasonable and reliable parameters of seismic safety evaluation for post-disaster reconstruction in loess area.Through the experimental study on dynamic characteristics of post-earthquake loess in Yongdeng,Gansu Province,the paper discusses on the dynamic characteristics,and the results indicate that there are enormous differences in dynamic characteristics between under dynamic load post-earthquake and the undisturbed loess in Yongdeng area,mainly in decreasing of dynamic modulus of elasticity and evident increasing of residual deformation.

关 键 词：震后黄土 动力学特性 动弹性模量 残余变形 

分 类 号：P642.131[天文地球—工程地质学] TU411.8[天文地球—地质矿产勘探]