摘要
剪切波速是当前工程场地地震安全性评价和地震小区划工作中必备的参数之一,是土层地震反应分析中一个重要参数。然而受到实际情况的制约,测试不能达到工作要求的深度或是测试结果未满足要求,这时必须对剪切波速进行估计。该文通过对东营城区46个钻孔土体剪切波速测试结果的统计回归分析,提出了线性函数、幂函数相结合的土体剪切波速推算公式。考虑土体类型对土剪切波速与土层深度关系的影响,获得考虑不同土体类型的剪切波速推测公式。最后,以某职工住宅楼工程为例,通过4个钻孔剪切波速测试结果与本报告所提出的剪切波速推算方法进行对比验证,证明该方法的有效性。
The shear wave velocity is one of the essential parameters of seismic safety evaluation and seismic micro zoning in current engineering site,and it is the key parameter in soil seismic response analysis.Sometimes, the shear wave velocity test could not arrive at technical requirement due to the actual condition restriction, so it is necessary to develop the parameter inferring method.In the paper,the data of soils shear wave velocity at 46 typical boreholes in Dongying city area are selected for statistic regressive analysis.Based on the data,the inferring formulas of shear wave velocity with linear function and power function are put forward.Considering shear wave velocity and soil depth influenced by soil classification,the new inferring formulas are obtained. At last,the inferring formulas of the shear wave velocity are applied at 4 boreholes in one residential building.It shows that the calculation results conform well to those of site test,and the inferring method is effective.
出处
《勘察科学技术》
2011年第2期23-26,共4页
Site Investigation Science and Technology
关键词
剪切波速
推测方法
统计回归分析
shear wave velocity
inferring method
statistic regressive analysis
