| 桩侧+桩端后压浆提高基桩承载力的工程实践 |
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| 引用本文： | 刘纪峰,段刚,杨宏涛.桩侧+桩端后压浆提高基桩承载力的工程实践[J].信阳师范学院学报(自然科学版),2010,23(2). |
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| 作者姓名： | 刘纪峰 段刚 杨宏涛 |
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| 作者单位： | 1. 三明学院,土木建筑工程系,福建,三明,365004
2. 河南天地置业有限公司,河南,郑州,450008 |
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| 基金项目： | 福建省高校服务海峡西岸建设重点项目，三明学院科研基金自然科学研究项目 |
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| 摘 要： | 详述了某工程采用桩侧桩端联合后压浆提高基桩承载力的施工方法,并对后压浆的10根试验桩和未压浆的2根锚桩进行了现场检测试验,对实测数据进行了分析。结果表明:桩侧桩端联合后压浆桩的桩长满足要求,桩身结构完整;联合后压浆桩的承载力比未压浆桩的承载力提高70%以上;将静载试验的最大荷载确定为单桩竖向极限承载力是偏于安全的,工程桩极限承载力按8800 kN设计是可靠的;使用桩侧桩端联合压浆提高桩承载力的方案是可行的,但在施工过程中要正确选择后压浆的地层、控制好压浆量和压浆压力。
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| 关 键 词： | 桩侧桩端联合后压浆 基桩承载力 静载 |
Engineering Application of Post-grouting on the Tip and Side for Ultimate Bearing Capacity Improvement of the Foundation Pile |
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| LIU Ji-feng,DUAN Gang,YANG Hong-tao.Engineering Application of Post-grouting on the Tip and Side for Ultimate Bearing Capacity Improvement of the Foundation Pile[J].Journal of Xinyang Teachers College(Natural Science Edition),2010,23(2). |
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| Authors: | LIU Ji-feng DUAN Gang YANG Hong-tao |
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| Affiliation: | LIU Ji-feng1*,DUAN Gang2,YANG Hong-tao2(1.Department of Civil Engineering,Sanming University,Sanming 365004,China,2.Henan Sky-l, Real Estate Ltd.,Zhengzhou 450008,China) |
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| Abstract: | The construction process of post-grouting on the tip and side for ultimate bearing capacity improvement is presented.10 piles with post-grouting on tip and side and 2 unpost-grouting piles are tested and analyzed.The results indicated that the length and integrity of piles are satisfactory.The untimate bearing capacity of post-grouting piles are 70% improved at least than that of unpost-grouting piles,making maximum vertical static loading of this time testing piles as ultimate bearing capacity is safer and... |
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| Keywords: | post-grouting tip and side of pile ultimate bearing capacity of foundation pile vertical statil loading |
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