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钻孔灌注桩桩端后压浆承载特性研究 被引量:2

Bored Pile Load-Bearing Characteristics of Post-Grouting
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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。 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.
出处 《交通标准化》 2012年第2期77-82,共6页 Communications Standardization
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 post-grouting technology bored pile lateral friction static load test ultimate bearing capacity
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参考文献5

  • 1王秀哲,龚维明,薛国亚,李昌驭.桩端后注浆技术的研究现状及发展[J].施工技术,2004,33(5):28-31. 被引量:40
  • 2Bruce D A. Enhancing the performance of large diameter piles by grouting[J]. Grouting Engineering, 1986, 19(4): 9-15.
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  • 5黄生根.超长钻孔灌注桩后压力注浆技术研究[D].南京:东南大学,2005.

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