管桩与塑料排水板处理软土地基试验研究

Experimental Study of Pile and Plastic Drainage Plate Treatment in Soft Soil Ground

为了消除管桩施工过程中超静孔隙水压对地基土层产生的不利影响,依托PHC管桩与塑料排水板处理某公路软土地基工程项目,进行了管桩挤土效应试验研究。在施工现场布置排水板间距分别为1.2m与2.4m的两个试验区,通过对管桩施工过程中孔隙水压力、土体侧向位移和地表沉降与隆起的对比测试,得到了不同排水板间距对抵消管桩挤土效应的效果。

In order to eliminate the adverse effects of super pore pressure on the foundation soil in tubular pile con- struction process, the experiment research on squeezing effects of pipe pile is studied by PHC pipe pile and plastic drainage plate treatment in highway soft soil ground engineering project. Two test areas are arranged in construction site layout with 1.2meter drainage plate spacing and 2.4meter drainage plate spacing. Through the contrast tests on the pore water pressure, lateral displacement of soil and surface subsidence and uplift during pipe pile construction, influence of different drainage plate spacing on offsetting squeezing effects of pipe pile is carried out.