软土地区砂石垫层地基的沉降计算

软土地区采用砂石垫层处理软土地基对提高地基承载力、降低地基沉降量的作用是非常显著的 ,也取得了显著的经济效益。本文从双层地基角度出发 ,按照应力场方法确定此种地基的压缩层厚度 ,再按照分层总和法计算地基沉降量。通过对计算结果和实测值的对比 ,说明大面积砂石薄垫层地基采用当量分层法计算的地基沉降 ,可以较好拟合实际的地基沉降情况

SETTLEMENT CALCULATION OF SAND AND GRAVEL FOUNDATION SOILS IN THE SOFT GROUND REGION

It is very good to improve the bearing capacity and to decrease the settlement of ground,when we do the improvement of soft ground by the means of sand and gravel foundation soils in the poor ground region.There has had a large of profit by it.In this article,the auther studyed the settlement on the double-layered ground theory.The significant depth of compression zone is first calculated on the method of stress field,and next the settlement is calculated by the equivalent and different-total method.By the comparation between the result of calculation and the settlement observation in practice,the method of settlement calculation of a broad sand and gravel foundation soils can be fit for the settlement in practice in soft ground region.