【摘要】 根据广西柳州市官塘片区地震小区划45个钻孔的红粘土土层剪切波速实测数据,对其剪切波速与埋深的相关性进行了研究,结果表明:(1)红粘土的剪切波速随埋深增加的变化规律符合幂函数规律,经验公式为VS=200.4H0.143(R2=0.756);(2)与其它地区粘性土的剪切波速分布规律相比,官塘片区红粘土在埋深较浅时具有较高的剪切波速,随埋深增加其剪切波速递增率减小;(3)所建立的经验公式用于该地区实际工程预测红粘土的剪切波速效果好于《构筑物抗震设计规范》推荐的经验公式,可供当地实际工程估算研究红粘土的剪切波速借鉴使用。更多还原

【Abstract】 Aiming at the problems of studying the shear wave velocity characteristics of red clay and the need of construction projects,we carried out the research in the correlative between shear wave velocity and the depth of red clay based on the realistic shear wave velocity data of 45 drill holes which are located in Liuzhou Guantang region of Guangxi. The result shows that:( 1) The change lawbetween shear wave velocity and depth of red clay follows the power lawrelation,and the established empirical formula is VS= 200. 4H0. 143( R2= 0. 756).( 2)Compared with the distribution lawof shear wave velocity of clay soil in other area,the shear wave velocity of red clay is much higher when the depth is shallow,however the increase rate of it is smaller with the increasing of depth in Liuzhou Guantang region.( 3) After comparing the relative deviation,the empirical formula established in this paper has a better forecasting effect than the empirical formula recommended by Aseimic Design of Construction Works on estimating the shear wave velocity of red clay,and it can be used for the reference in practical engineering of Liuzhou Guantang region.更多还原