波速测试在岩土工程中的应用

通过波速测试技术进行岩土体弹性波速度原位测试,利用岩土体的纵、横波速度值能够进行场地类别划分,确定场地卓越周期,以及计算地基土的动参数,为岩土工程提供必要的设计参数。通过计算获得了徐州苏宁广场场地土的纵、横波速度以及场地土的动参数,根据《建筑抗震设计规范》确定徐州苏宁广场场地为二类场地,利用波速值计算场地卓越周期为0. 415 s与规范中查表获得的特征周期一致。为该工程场地工程地质评价和抗震设计提供了丰富的参数。

Application of wave velocity testing in geotechnical engineering

The elastic wave velocity of rock and soil can be measured in situ by the wave velocity measurement technology. The P-wave and S-wave velocity of rock and soil can be used to classify the sites, determine the predominant period of site, calculate the dynamic parameters of the foundation soil, and so as to provide necessary design parameters for geotechnical engineering. The P-wave and S-wave velocity and the dynamic parameters of site soil of Suning Square in Xuzhou are obtained by calculation. According to the Code for Aseismic Design of Buildings, the site of Suning Square in Xuzhou is classified as the second-class site. The predominant period of the site calculated using wave velocity is 0.415 s, which is consistent with the characteristic period obtained from the code. It provides abundant parameters for engineering geological evaluation and aseismic design of site.