摘要
在路基处理范围内设置竖向排水体可以克服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。依托河南某高速公路管桩路基工程,在施工现场布置2个不同排水间距的试验区,通过对管桩打设过程中孔隙水压力、土体侧向位移和地表沉降与隆起等内容的对比测试,探讨了排水板间距1.2m与2.4m对抵消管桩挤土效应的不同效果,为路基设计中竖向排水体的布设间距以及管桩的施工顺序提供参考。
Setting the vertical drainage body in the subgrade treatment range can overcome the adverse effect of excess pore water pressure generated of pipe pile in construction process on the foundation soil.Based on pipe pile subgrade engineering of some He＇nan Expressway,the authors arranged two test area with different drainage plate distance in construction site layout. Through the contrast test on the pore water pressure,lateral displacement of soil,surface subsidence and uplift,the authors analyzed the different effects of the drainage plate distance with 1. 2m and 2. 4m on cancellation of soil squeezing effect of pipe pile,which provided reference for vertical drainage subgrade design of layout distance and construction sequence of pipe pile.
出处
《施工技术》
CAS
北大核心
2015年第17期56-59,共4页
Construction Technology
基金
河南省科技攻关计划项目(112102310616)
关键词
道路工程
路基
管桩
塑料排水板
孔隙水压力
挤土效应
road construction
subgrade
pipe piles
plastic drainage plate
pore water pressure
soil squeezing effect
