打入式沉管夯扩桩在淤泥质土中的应用  

Application of Driven Ramming-expanded Sinking Pipe Piles in Muddy Soil

作　　者：王跃军 

机构地区：[1]甘肃第三建设集团公司,甘肃兰州730030

出　　处：《施工技术》2012年第7期58-61,共4页Construction Technology

摘　　要：以某基础工程为例,对其在淤泥质土层下的承载力确定、技术难点、施工工艺等进行了分析。对打入式沉管夯扩桩在淤泥质土层应用中的各种质量问题进行了分析,并提出了减少淤泥质土对施工不利影响的具体施工措施;同时提出了其在淤泥质土中应用时的施工辅助措施。工程实践表明：这些措施可以有效降低桩身和桩顶处的水平荷载作用对成桩质量的影响,在淤泥质土层中采用打入式沉管夯扩桩这种技术工艺,具有显著的经济效益和社会效益。Based on some real projects, this paper analyzed the determination of bearing capacity, technical difficulties and construction technologies in muddy soil. Various quality problems in the application of driven ramming-expanded sinking pipe piles were discussed and measures were proposed to minimize the adverse effects of muddy soil on the construction. The engineering practice shows that these measures can effectively reduce the influence of horizontal load on the quality of piles. It also shows that in muddy soil, the application of driven ramming-expanded sinking pipe piles obtains significant economic and social benefits.

关 键 词：地下工程 桩基础 打入式沉管夯扩桩 淤泥质土 承载力 检测 

分 类 号：TU753.3[建筑科学—建筑技术科学]