透水管桩的群桩沉桩室内模型试验研究  

Laboratory model experimental investigation of permeable pipe piles

作　　者：黄勇[1] 梅国雄[1,2] 王钰轲 

机构地区：[1]南京工业大学交通学院,江苏南京210009 [2]广西大学土木建筑工程学院,广西南宁5300042 [3]河海大学土木与交通学院,江苏南京210098

出　　处：《河北工程大学学报（自然科学版）》2016年第3期18-23,共6页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金项目(51322807)

摘　　要：本文基于室内模型试验,通过透水管桩和普通管桩沉桩模型试验对比,探究群桩情况下,透水管桩加速桩周土超静孔隙水压力消散的效果和规律。通过试验表明透水管桩更有利于桩周土超静孔压消散,其促进作用沿深度方向递增,沿水平方向递减。透水管桩阻碍了沉桩完成后桩周土超静孔隙水压力的上升,从超静孔隙水压力产生的角度出发,降低了桩周土超静孔隙水压力的峰值,控制了整个桩周土超静孔隙水压力的水平,有利于超静孔隙水压力后期的消散。表明沉桩施工中,透水管桩提高了施工进度,降低了对周围环境的影响。Based on laboratory model test,the promotion in effect and law of the dissipation process of excess pore water pressure by permeable pipe pile. Compared permeable pipe pile with normal pipe pile model experiment,the evidently positive effect on the dissipation of excess pore water pressure could be found in permeable pipe pile model test. The impact scope of the soil mass in the middle and lower part was the depth direction,decreasing along the horizontal direction.. Permeable pipe pile in the dissipation of excess water pore pressure had the most obvious effect on the early period,greatly speeding up the construction progress. It is found that the excess pore pressure evidently reduced in the soil around the pile at the initial time of drainage pile completed. In the process of pile driving construction,the permeable pipe pile improves the construction schedule and reduces the influence on the surrounding environment.

关 键 词：透水管桩 超静孔压 室内模型实验 

分 类 号：TU4[建筑科学—土工工程]