劲性复合桩施工对土体影响的试验研究

Experimental Study on Effect of Rigid Composite Pile Construction on Soil Mass

在常用桩型中,钻孔灌注桩存在泥浆排放量大、造价高、成桩时间较长等缺点;而预制桩则存在严重的挤土效应、噪声污染大等弊端。结合工程实际,阐述了软土地基上新型工艺"劲性复合桩"施工对周边土体的影响,并分别从超孔隙水压力、土体分层沉降、土体深层水平位移3个层面进行了试验研究和数据分析。

Aiming at the pile types commonly used in construction, such as bored piles, there are many disadvantages such as large slurry discharge, high cost, Iong pile-forming time, while precast piles have serious soil compaction effect, large noise polluti on. Combining with engineering practice, the influence of new technology of "rigid composite pile construction" on surrounding soil mass on soft soil foundation is elaborated, and the experimental study and data analysis are carried out from three levels: excess pore water pressure, layered settlement of soil mass and deep horizontal displacement of soil mass.