软土基坑SMW工法桩与锚杆组合支护若干施工技术问题探讨

Investigation of some construction technical problems of composite support with SMW pile and anchor pipe in foundation pit of soft soil

基于沿海某一深厚层软土基坑支护施工案例,在特殊场地条件与地质条件下,对滨海吹砂地层基坑工程施工遇到特定困难进行实践探索,通过精心分析,制定合理可行的施工方案,细化和深化施工工艺,并以试验性施工加以验证,最终确定关键工艺参数,解决基坑支护施工若干技术难题,使之既能满足设计要求,又能满足项目工期、成本及质量要求,对于相类似的工程具有参考价值。

In view of a construction case of foundation pit supporting construction of deep and thick soft soil on the coast,under the special conditions of geological and site,the construction of the foundation pit of the coastal blown sand stratum encountered specific difficulties to carry out practical exploration. Through careful analysis,the development of reasonable and feasible construction plan,refine and deepen the construction process,and to test the construction to be verified,and ultimately determine the key process parameters,solve some technical problems of foundation pit support construction,so that it can meet the design requirements,and can meet the project duration,cost and quality requirements,for similar projects with reference value.