| 高压注浆技术对大直径超长嵌岩桩影响性状研究 |
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| 引用本文： | 黄建华,陈忠,李峰.高压注浆技术对大直径超长嵌岩桩影响性状研究[J].福建工程学院学报,2003,1(3):22-28. |
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| 作者姓名： | 黄建华 陈忠 李峰 |
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| 作者单位： | 1. 福建工程学院土木工程系,福建,福州,350007
2. 福州市建筑设计院,福建,福州,350001 |
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| 摘 要： | 硬质岩持力层埋藏较深的地区，大直径超长灌注桩在嵌入相对较浅的软质(破碎)岩后，再进行后压浆处理，可以明显提高承载力并减少沉降量。文章通过工程实例测试了在同一个工程场地上两种不同施工工艺的两组试验桩，对其测试数据和试验资料进行分析研究，优化设计方案，缩短工期，节省造价，并得到一些有价值的结论，避免今后类似工程盲目增加桩长、加大嵌入硬质岩深度而造成的工程经济损失。
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| 关 键 词： | 高压注浆技术 大直径超长嵌岩桩 静载荷试验 承载力 施工工艺 |
Research on the impact of high- pressure grouting to the large - diameter and extra - long piles setting into rock |
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| Abstract.Research on the impact of high- pressure grouting to the large - diameter and extra - long piles setting into rock[J].Journal of Fujian University of Technology,2003,1(3):22-28. |
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| Authors: | Abstract |
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| Abstract: | In the area where hard formation buries deeply, large - diameter and extra - long cast - in place piles set into soft incompetent (fragmental) rock with high pressure grouting technique may raise the bearing capacity and reduce settlement apparently. This article approaches the subject through testing data of comparing two groups of piles experiments with two different ways of construction in the same project. The research enhanced original designing arrangement, shortened construction period, reduced cost of the project and drew some valuable conclusions. As a result, it also proposed that it's not necessary to elevate the length of piles worthlessly and set too deep into hard formation unrealistically to avoid wasting in the later similar engineering. |
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| Keywords: | large - diameter and extra -long piles static loading test high pressure grouting technique |
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