昆明盆地粉质粘土土动力参数研究  

Research on Dynamic Parameters of Silty Clay in the Kunming Basin

作　　者：李建有 太树刚 林凤仙 梁坤 陈小强 

机构地区：[1]昆明南方地球物理技术开发有限公司,昆明650231

出　　处：《震灾防御技术》2015年第4期872-883,共12页Technology for Earthquake Disaster Prevention

摘　　要：土动力参数是土层地震反应分析中重要的参数之一,且具有较强的区域性特点。本文收集了昆明盆地区域内68个场地的137组粉质粘土的动三轴试验数据,进行了统计分析,并通过土层地震反应分析计算,与袁晓铭的推荐值和《工程场地地震安全性评价工作规范(DB001-94)》中给出的规范值做了对比,结果表明:采用本文统计的土动力参数,所得的地震动参数具有一定的代表性和适用性。在昆明盆地区域,本文的统计值在Ⅱ、Ⅲ类工程场地地震安全性评价工作中具有一定的借鉴和参考作用。Soil dynamic parameter, which is strong region-dependent, is one of the important parameters for seismic response analysis of the solid layer. In this paper, dynamic parameters of silty clay are obtained from triaxial tests of 137 samples collected from 68 sites in the Kunming basin. We carry out the soil seismic response calculation, and compare our results from statistical analysis with values recommended by Yuan Xiaoming, and those recommended by the code for seismic safety evaluation of engineering sites. Our result shows that the values of dynamical parameters in this work are representative and applicable. Therefore, these values can be used as reference in the seismic risk assessment of engineering projects of Ⅱ, Ⅲ levels in the Kunming basin.

关 键 词：粉质粘土 土动力参数 统计分析 昆明盆地 

分 类 号：TU435[建筑科学—岩土工程]