中南大学学报（自然科学版）2012，Vol.43Issue(6)：2390-2395,6.
水泥土搅拌桩复合地基桩土应力比的解析算法
Analytical calculation of pile-soil stress ratio of cement-soil mixed pile composite foundation
摘要
Abstract
An advanced unit model was put forward to analyze the pile-soil stress ratio of cement-soil pile foundation under embankment load. Based on the assumed vertical displacement of embankment fill and the assumed deformation formula of geogrid, the vertical stress of embankment fill and the tensile stress of geogrid on the top of pile were deduced. According to the balance of vertical loading on the top of pile, the vertical stress of the top of pile was established. The vertical stress of surrounding soil was derived by assuming that surrounding soil conformed to Winkler model, and the calculation formula of pile-soil stress ratio was established.The rationality of formula is confirmed by comparison with the measured data, and it has reference value to the design of composite foundation under embankment.关键词
路堤荷载/土工格栅/水泥土搅拌桩/复合地基/桩土应力比Key words
embankment load/geogrid/cement-soil pile/composite foundation/pile-soil stress ratio分类
建筑与水利引用本文复制引用
赵春风,李永刚,钱涛..水泥土搅拌桩复合地基桩土应力比的解析算法[J].中南大学学报（自然科学版）,2012,43(6):2390-2395,6.基金项目
上海市重点学科建设项目(B308) （B308）
浙江省交通运输厅资助项目(2010H35) （2010H35）
