现浇薄壁管桩沉桩试验研究  

Piling Test of Cast-in-place Thin-wall Concrete Pile

作　　者：丁晓峰[1] 

机构地区：[1]江苏省交通科学研究院,江苏南京210017

出　　处：《现代交通技术》2009年第4期18-20,共3页Modern Transportation Technology

摘　　要：结合现浇薄壁管桩(以下简称PPC桩)在盐通高速公路及上海北环高速公路中的应用,通过一系列现场试验,对现浇薄壁管桩沉桩拔管速度、混凝土材料塌落度、沉桩过程对场地土性影响及沉桩挤土效应进行了研究,得出了优化的工艺技术参数。沉桩观测表明PPC桩存在一定的挤土效应,但在目前的设计间距下不会对邻桩构成影响。Based on the application of cast-in-place thin-wall concrete pile （PCC） in Yantong expressway and Shanghai north-cycle expressway, a series of tests are conducted to determine the reasonable concrete slump and pulling speed. The influence of piling on ground is tested also, and the displacement monitoring during piling shows that the compaction effect of PCC is moderate, and the current pile space is enough to eliminate such effects.

关 键 词：现浇薄壁管桩 工艺试验 沉桩观测 挤土效应 

分 类 号：U416.1[交通运输工程—道路与铁道工程]