后压浆旋挖钻孔灌注桩单桩竖向承载力分析
摘要:通过后压浆旋挖钻孔灌注桩现场测试结果,分析了后压浆旋挖钻孔灌注桩的承载力、桩身荷载传递规律、桩的极限侧阻力分布规律。桩在竖向荷载作用下,桩的极限侧阻力发挥度,随桩的入土深度而衰减。提出了侧摩阻发挥度分布表达式及后压浆旋挖钻孔灌注桩单桩承载力计算方法,计算结果与试验结果较为符合。为后压浆旋挖钻孔灌注桩的设计提供了理论依据。
Abstract:Based on the in-site measurement results of the post-grouting spinning drill pile, the engineering properties, load transferring law and side-friction distribution law of pile are analyzed. The development degree of side-friction of the pile, which subjected vertically loads, decays with the buried depth of the pile. The distribution relationship of development degree of side-friction, toe-friction and computation method of the single pile bearing capacity of the post-grouting spinning drill pile are provided. Theory basis for design of post-grouting spinning drill pile are provided.
中文标题：
后压浆旋挖钻孔灌注桩单桩竖向承载力分析
Computation Method of the Single Pile Bearing Capcity of Post-grouting Spinning Drill Pile
作者：
梁金国
Liang Jinguo
作者简介:梁金国,河北临西人,硕士研究生导师,教授级高级工程师,现从事岩土工程专业。E-mail:ljg_hb@sina.com
通讯地址：
河北建设勘察研究院有限公司, 河北石家庄 050031
Ltd.ofResearchInstituteofConstructin&InvestigationofHebei,ShijiazhuangHebei053200China
中图分类号:TU473.11
出版物：岩土工程技术
收稿日期:2008-04-02
网络出版日期:2021-07-07
关键词:后压浆技术,旋挖钻孔灌注桩,荷载传递规律,侧摩阻发挥度,单桩承载力
Key words:post-grouting technology,spinning drill pile,law of load transfer,development degree of the side resistance,single pile bearing capacity
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