首页|豫东平原浅部土层波速及泊松比初步研究

豫东平原浅部土层波速及泊松比初步研究

Preliminary study on wave velocity and Poisson' s ratio of superficial soil layers in East Henan Plain

扫码查看
基于豫东平原实测剪切波速、P波波速资料,分别采用线性函数模型、幂函数模型和一元二次函数模型建立了不同土类的波速与埋深之间的回归公式,以拟合优度为评价指标对不同土类统计模型及其参数进行了对比选择,并指出这些回归公式不适用于有软弱夹层的场地.浅部土层总泊松比随着埋深的增加具有先增大再稳定后减小的变化特征.通过波速和孔隙度测试可以获得饱和土层有效泊松比.
Based on the measured data of shear wave velocity and P wave velocity in Eastern Henan Plain,regression equations of wave velocity and depth of different soil layers were established by using the linear model,the power function model and the quadratic equation model.The goodness of fitting was taken as an evaluation index to compare and select the statistic models and parameters of different kinds of soils.It is pointed out that The regression equations are not suitable for the site with weak soil interlayer.With the increase of depth of superficial soil layers,the total Poisson' s ratio increases first,then tends to be stable and decreases later.The effective Poisson' s ratio can be obtained by the test of shear wave velocity,P wave velocity and porosity of saturated soil layers.

shear wave velocityP wave velocityPoisson' s ratiosoil dynamic parameters

贺为民、杨杰、杜燕林、李德庆

展开 >

中国地震局地球物理勘探中心,河南郑州450002

剪切波速 P波波速 泊松比 土动力学参数

中国地震局地震科技星火计划项目

XH15058

2016

世界地震工程
中国地震局工程力学研究所 中国力学学会

世界地震工程

CSTPCDCSCD北大核心
影响因子:0.523
ISSN:1007-6069
年,卷(期):2016.32(3)
  • 11