摘要
CFG桩法在高层及多层建筑的地基处理中已有许多成功实例,在变形计算中,《建筑地基处理技术规范》(JGJ 79-2002)推荐使用复合模量法,并提供了计算复合土层压缩模量的应力比法公式。这里通过复合地基载荷试验资料,提出一种改进的面积比法公式。应用该法计算的复合地基沉降值,与建筑物的沉降观测值有较好的吻合度。
CFG pile has many successful engineering cases in ground treatment of high buildings. Composite modulus meth- od is recommended by ＂Technical Code for Ground Treatment of Buildings＂ JGJ 79 -2002 in deformation calculation with stress ratio method formula of composite earth layer compression modulus. In this paper, a modified formula of area ratio method is put forward based on the loading test data of composite foundation. The composite foundation settlement value calculated by this method has a good agreement with the building settlement observation value.
出处
《探矿工程（岩土钻掘工程）》
2012年第8期57-60,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
CFG桩复合地基
复合土层压缩模量
应力比法
面积比法
CFG pile composite foundation
compression modulus of composite earth layer
stress ratio method
area ratio method
