| 钻孔灌注桩桩端后压浆承载特性研究 |
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| 引用本文： | 韩八晓,刘建忠,王修山.钻孔灌注桩桩端后压浆承载特性研究[J].交通标准化,2012(2):77-82. |
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| 作者姓名： | 韩八晓 刘建忠 王修山 |
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| 作者单位： | 1. 内蒙古自治区公路工程局,内蒙古呼和浩特,010005
2. 中交第一公路勘察设计研究院有限公司,陕西西安710075;长安大学公路学院,陕西西安710064 |
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| 摘 要： | 后压浆技术可大幅提高钻孔灌注桩的承载力。基于西安至铜川扩建工程试桩的现场静载试验,分析了桩端后压浆的增强加固机理,深入研究了后压浆钻孔灌注桩单桩竖向承载力特性,桩侧阻力及桩端阻力的发挥性状。利用实测结果,得出了后压浆增强系数,并提出了后压浆单桩极限承载力的计算公式,可为相关领域的工程提供一定的借鉴。
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| 关 键 词： | 后压浆技术 钻孔灌注桩 侧摩阻力 静载试验 极限承载力 |
Bored Pile Load-Bearing Characteristics of Post-Grouting |
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| HAN Ba-xiao,LIU Jian-zhong,WANG Xiu-shan.Bored Pile Load-Bearing Characteristics of Post-Grouting[J].Communications Standardization,2012(2):77-82. |
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| Authors: | HAN Ba-xiao LIU Jian-zhong WANG Xiu-shan |
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| Institution: | 1.Highway Engieering Bureau of Inner Mongolia Autonomous Region, Hohhot 010005, China; 2.CCCC First Highway Consultants Co., Ltd., Xi＇an 710075, China; 3.Highway School, Chang＇an University, Xi＇an 710064, China) |
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| Abstract: | Post-grouting technology can significantly improve the bearing capacity of bored piles. Based on the on-site static load test of test pile in Xi＇an-Tongchuan expansion project, the reinforcement mechanism of post-grouting technology is analyzed, the vertical bearing capacity characteristics as well as the traits of the later- al friction and tip resistance of post-grouting bored pile are studied in depth. According to the experimental re- suits, the reinforcement coefficient of post grouting is obtained, and the computing formula of ultimate bearing capacity of single pile with post-grouting technology is proposed, which can provide a reference for engineering in relevant field. |
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| Keywords: | post-grouting technology bored pile lateral friction static load test ultimate bearing capacity |
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