摘要
通过在上海A15公路上进行的长板短桩现场试验,分析了长板短桩工法中桩土应力分配情况,得到了桩土应力比参数。试验结果表明:水泥土搅拌桩桩长较短,在受到荷载时可以向下刺入变形,并且通过排水固结作用提高地基土的强度,更大地发挥桩间土的承载力,导致长板短桩工法比常规的地基处理方法的桩土应力比要稍小。
Field test research is carried out on the pile-soil stress ratio of the D-M method on the foundation of A15 highway in Shanghai. On the basis of the test data, the stress ratio of the pile to soil and the bearing capacity is calculated. The result shows that: the cement mixing pile is short, it can pierce down into the soils. And for the intensity is raised by the prefabricated drain the soil can bare more load . So that the pilesoil ratio of the D-M method is less than the conventional method.
出处
《低温建筑技术》
2010年第1期83-85,共3页
Low Temperature Architecture Technology
基金
国家自然科学基金资助项目(50678130)
国家863计划项目(2007AA11Z117)
上海市重点学科建设资助项目(B308)
关键词
复合地基
长板短桩
桩土应力比
composite foundation
D-M method
pile-soil stress ratio