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钻孔灌注桩桩端后压浆机理及效果检测
Mechanism & Performance Test of Bored Pile with Post Grouting at Base
【摘要】 本文分析了传统钻孔灌注桩的工艺缺陷,阐述了后压浆机理,并结合工程实例,对桩端压浆进行了试验研究,分析了后压浆效果。同时指出,几种检测手段综合应用是检测后压浆桩压浆效果的有效方法。
【Abstract】 The technique of post-grouting after construction can both improve the bearing capacity of pile and decrease the pile top subsidence obviously as well as the bearing properties of foundation pile change. The paper reveals working mechanism of post-grouting and showed the performance of post-grouting through introduction of experiments of base-grouting in super-long and big-diameter bored piles conducted in the experimental-pile research project of Su-Tong Bridge across Yangtze River and the effect of grouting is analyzed.
【关键词】 钻孔灌注桩；
桩端后压浆；
承载力试验；
钻孔取芯；
CT检测；
【Key words】 bored pile； post-grouting at base； bearing capacity test； core-drilling； CT test；
【Key words】 bored pile； post-grouting at base； bearing capacity test； core-drilling； CT test；
- 【文献出处】 工程质量 ,Engineering Quality , 编辑部邮箱 ,2005年02期
- 【分类号】TU753.3
- 【被引频次】11
- 【下载频次】143