某动力固结法处理双层软土地基失败案例分析  

THE ANALYSIS OF DOUBLE-LAYERED SOFT SOIL FOUNDATION FAILURE CASE USING DYNAMIC DRAINAGE CONSOLIDATION METHOD

作　　者：何钦[1] 齐添[1] 孙宏磊[2] 

机构地区：[1]广州穗监工程质量安全检测中心,广州510150 [2]浙江大学软弱土与环境土工教育部重点实验室,杭州310058

出　　处：《工业建筑》2010年第S1期648-652,共5页Industrial Construction

基　　金：博士后科学基金资助项目(20090450181)

摘　　要：基于动力固结法分析了双层软土地基的设计、施工及检测过程,总结了施工前、后地基土体物理力学参数,分析并计算了地基加固深度及工后沉降,并分析后继的补救措施———水泥搅拌桩的工后沉降。结论表明:下卧软弱土层的双层地基经动力固结法处理后仍具有较大的工后沉降,水泥搅拌桩次之;对工后沉降及差异沉降要求较严格的工程采用动力排水固结法仍需谨慎。Design,construction and testing process of double-layered soft soil foundation were analyzed based on dynamic drainage consolidation method.Soil parameters during pre-construction and post-construction were summarized,consolidation depth and post-consolidation settlement were also calculated.The foundation settlement of cement mixing pile as preparation measure was analyzed.The results showed that dynamic drainage consolidation and cement mixing pile were not suitable for two-layer soft soil foundation which demanded strict foundation settlement.

关 键 词：双层地基 动力排水固结法 大面积堆载 软弱下卧层 工后沉降 

分 类 号：TU472[建筑科学—结构工程]