对复合地基设计方法的几点探讨

本文首先对目前通用的承载力设计的面积比公式和应力比公式及其设计参数进行了深入的比较和讨论 ,并提出了利用褥垫层技术对承载力进行优化设计的思路。然后结合数值分析手段 ,从理论上探讨了两种复合地基沉降计算的应力折减法和复合模量法 ,研究了其各自的适用条件和两种方法之间的相互关系 。

Formulas of area ratio and stress ratio and designing parameters currently used in the design of bearing capacity are compared and discussed in this paper.The thought of optimum design on bearing capacity by using cushion technique is suggested. Methods of stress attenuation and com posite modulus for calculating composite ground settlem ent are studied theoretically.The adaptative conditions and correlation between the two methods are studied and relevant conclusions are given.