上海崇明综合深井土动力特性的试验研究  

EXPERIMENTAL STUDY ON DYNAMIC STRENGTH OF CLAY IN CHONGMING REGION INSHANGHAI

作　　者：任烨[1] 刘菲[1] 

机构地区：[1]上海市地震局,上海200062

出　　处：《高原地震》2017年第3期50-54,共5页Plateau Earthquake Research

摘　　要：对取自上海崇明综合深井的12只原状土样进行共振柱、循环三轴联合试验,初步研究该地区黏性土的土动力特性,得到动剪应变γd在10^(-6)~10^(-2)范围内的Gd/G0~γd、D~γd关系曲线,根据试验所得关系曲线,分析黏性土强度参数的变化规律。研究成果对上海崇明地区各类工程建设的场地地震安全性评价工作具有一定的借鉴和参考价值,有利于该地区地震安全性评价工作的开展。Through the resonant column test and cyclic triaxial joint test on the 12 undisturbed soil samples taken from Chongming＇ s deep borehole in Shanghai, the curves of Gd/G0 - γd and D - γd are got when the dy- namic shear strain in the region from 10-6 to 10-2, the dynamic deformation characteristics of diversion dike soil are analyzed. According to the test curve, the cohesive soil strength parameter variation is analyzed. The results of this research have some reference value to seismic safety evaluation works on various construction projects in Chongming venue of Shanghai. The results are also conducive to carry out the work in the area of seismic safety evaluation.

关 键 词：土动力特性 动剪应变 阻尼比 曲线 

分 类 号：P315.91[天文地球—地震学]