岩土工程分层物理指标加权处理

Weighted processing for layered physical index in geotechnic engineering

对分层土层,根据不同计算量与物理指标、土层厚度相互关系,推导出平均物理指标加权处理的通用计算公式。详细给出了土的平均密度、桩侧平均摩阻力、水平向平均渗透系数、土的压缩模量当量值、土层等效剪切波速、垂直向平均渗透系数、土的平均比例系数等指标平均值表达式。对同一物理指标,分析了不同计算方法的误差大小、变化规律。

A general calculation formula for the average physical index＇weighted processing is deduced according to the relationships among the different calculation amount, physical index and soil thickness for layered soil. The paper gives the expressions for the average index such as the average soil severe, average fiction resistance of pile sides, horizontal average permeability coefficients, equivalent value of the soil compression modulus, shear wave velocity of soils, average permeability coefficients in vertical dimension and the average proportion coefficients. This paper also analyzes the error size and changing rule of different calculation methods for the same physical index.