软土地区冲孔灌注桩抗拔承载力的研究  

Research on the uplift bearing capacity of punched cast-in-situ pile in soft soil area

作　　者：林清意 

机构地区：[1]福建省建筑科学研究院福建省绿色建筑技术重点实验室,福建福州350025

出　　处：《福建建设科技》2014年第5期17-18,16,共3页Fujian Construction Science & Technology

摘　　要：本文介绍了三根嵌入岩层并有桩端高压注浆的软土地区冲孔灌注桩的单桩竖向抗拔静载试验情况。分析了高压注浆、嵌岩深度、持力层性状对单桩竖向抗拔承载力的影响,对目前规范建议的桩端高压注浆侧阻力增强系数进行了探讨,可供类似工程参考借鉴。Three vertical uplift static load tests of high pressure grouting rock-socketed Cast-in-place piles are introduced. The high pressure grouting,rock-socketed depth and bearing layer properties which influence single pile vertical bearing capacity of uplift are analyzed. The side resistance enhancement coefficients of high pressure grouting piles which are recommend in the current specification are discussed in this paper.

关 键 词：冲孔灌注桩 抗拔承载力 高压注浆 侧阻力增强系数 

分 类 号：TU753.3[建筑科学—建筑技术科学] TU473.1