泥岩地基桥梁钻孔灌注桩承载力试验研究  

Experimental study of bearing capacity of bridge borehole injection pile in mudstone foundation

作　　者：钱让清[1] 

机构地区：[1]安徽大学交通分校,安徽合肥230051

出　　处：《煤田地质与勘探》2005年第3期42-44,共3页Coal Geology & Exploration

基　　金：交通科技进步通达计划资助项目(项目号:2001-15和2003-41)

摘　　要：根据安徽省安庆市某高速公路桥梁工程3根钻孔灌注桩的单桩竖向抗压静载试验,以及桩身轴力传递和桩侧阻力性状的测试,分析了其静载试验Q～s曲线的特性、桩身轴力传递机理、桩侧阻力和桩端阻力发挥性状,探讨了钻孔方法、泥浆循环等施工因素对钻孔灌注桩的工程性状的影响,揭示了泥岩地基中桥梁钻孔灌注桩的承载力特性和破坏机理模式。Based on the testing results from single-pile vertical compression static load experiment on three borehole injection piles for a bridge of highway at Anqing city of Anhui Province, the paper analyses the pile's axial force transmission and side resistance properties, as well as analysis Q-s curve of the static load experiment, and relevant mechanism, the paper also discuses the borehole formation method, and the effect of mud circulation, etc. on engineering properties of the injection pile.The result indicates the characteristics of bearing capacity of bridge borehole injection pile in mudstone foundation and the failure mechanism.

关 键 词：泥岩 桥梁 灌注桩 栽荷试验 

分 类 号：TU473[建筑科学—结构工程]