根据大量工程实例,对沉降理论进行深入探讨;从研究压力扩散角着手,提出单桩地基的力学模型,建立数学模式,确定计算法则;研究了群桩的布桩距离和沉降计算方法;研究了沉降的力学原理;用回归分析方法根据实测沉降资料推算出最终沉降,用以验证理论计算的正确性。对众多工程实例验算结果表明本方法的正确性可达90％以上。 According to a large number of engineering examples, the theory of settlement was discussed in depth; from the study of the pressure divergent angle, a mechanical model of the single pile foundation was proposed, a mathematical model was established, and the calculation rules were determined; the pile distance and settlement calculation method of the pile group were studied; The mechanics principle of settlement; using the regression analysis method to calculate the final settlement based on the measured settlement data to verify the correctness of the theoretical calculation. The verification results for many engineering examples show that the accuracy of this method can reach more than 90%.