一种地基沉降计算新方法

针对传统地基沉降计算方法中的查表、查图等繁琐工作已引起误差的问题,基于规范的分层总和法原理,采用Lagrange插值多项式拟合室内土工试验中的e-p关系曲线。通过附加应力p在土层深度z的原始分布函数,建立地基沉降量s与土层深度z的关系函数,并进行地基沉降计算。该方法中地基计算深度、分层厚度及数量不受限制,消除了传统计算中计算深度、分层厚度、查表、查图等引起的误差,简单高效,对基础工程设计工作具有较好的应用价值。

A new method of foundation settlement calculation

Aiming at the problem of error caused by the tedious work of tabulation and chart in traditional foundation settlement calculation methods,based on the stratified summation method of the specification,Lagrange interpolation polynomial is used to fit the e-p curve of laboratory geotechnical test.Based on the original distribution function of additional stress p at soil depth z,the relationship function between foundation settlement s and soil depth z is established,and foundation settlement is calculated.The foundation calculation depth,stratified thickness and quantity are not limited,and the error caused by the calculation depth,stratified thickness,tabulation and graph in the traditional calculation is eliminated by this method which is simple and efficient,and has a good application value in the design work of foundation project.