渤海浅层沉积物剪切波速与深度的相关性分析  

Correlative analysis between shear wave velocity and depth of shallow sediments in Bohai Gulf

作　　者：周杨锐[1] 董明明[1] 吴海京[1] 王园君[2] 

机构地区：[1]中海油田服务股份有限公司,天津300451 [2]国家海洋信息中心,天津300171

出　　处：《工程勘察》2011年第6期90-93,共4页Geotechnical Investigation & Surveying

摘　　要：剪切波速是工程场地地震安全性评价最重要的参数之一。本文应用大量渤海浅层沉积物的剪切波速实测数据,利用最小二乘法通过三种模型探讨了不同土质类型的剪切波速与深度的关系,给出了不同土质类型的剪切波速与深度拟合最佳的统计公式。并与《构筑物抗震设计规范》的推荐公式在某一海域工程场地的测试结果进行对比分析,结果表明:本文所建立的统计公式对剪切波速的预测效果明显好于规范所推荐的统计公式。因此本文所推荐的渤海不同土质类型的剪切波速与深度间的统计公式,可供无波速测试的渤海海洋工程场地借鉴使用。The shear wave velocity of soils is one of the most important parameters in the field of geotechnical earthquake engineering.Based on the tested data of shear wave velocity of shallow sediments from lots of boreholes in Bohai Gulf,the best regression equations of shear wave velocity and depth for different types of soils are established by using three statistical models.The predicted shear wave velocity of soils with recommended equations are compared with the results of formula in the Chinese design code for earthquake resistance of special structures（GB50191-93） in a certain borehole.It is indicated that the fitting accuracy of recommended equations is better than that of formula in design code.Therefore,the recommended regression equations of shear wave velocity and depth of shallow sediments in Bohai Gulf can be used for marine sites of Bohai Gulf,whose shear wave velocities are not tested.

关 键 词：渤海 浅层沉积物 剪切波速 深度 相关分析 

分 类 号：TU415[建筑科学—岩土工程]