大柴旦剪切波速与岩土体埋深关系分析

Analysis on the Relationship between Shear Wave Velocity and Depth of Rock and Soil Mass in Da Qaidam

岩土体剪切波速是了解场地土动力学参数和评价场地土动力性能的重要依据。根据大柴旦地震小区划的钻孔实测剪切波速数据,研究了常规类土剪切波波速与研究区域内埋深间的关系。通过对大量剪切波速数据进行二次函数、线性函数以及幂函数三种关系的统计回归分析,最终确定二次函数作为研究区域内剪切波速与埋深间的最优统计公式。该公式可以本研究区域内一般建筑物的建设提供借鉴作用,可以在一定程度上降低将来进行建设的经济成本,可供该地区浅部地层无波速场地借鉴使用。

Shear wave velocity of rock and soil mass is an important basis for understanding soil dynamic parameters,and evaluating soil dynamic performance.According to the drilling shear wave velocity data of Da Qaidam earthquake zoning,the relationship between the conventional soil shear wave velocity and depth of the study area is studied.Statistical regression analysis is carried out on three kinds of shear wave velocity data including quadratic function,linear function and power function,and finally the quadratic function is the optimal statistical formula in the study area.This formula can provide reference for the construction of general buildings in the study area,reduce the economic cost of construction in the future to some extent,and it can be used for reference in shallow formation without shear wave velocity site in this area.