| 钻孔灌注桩桩侧桩端后压浆工艺 |
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| 引用本文： | 陈飞,段新胜,方青春,顾湘.钻孔灌注桩桩侧桩端后压浆工艺[J].西部探矿工程,2004,16(4):60-61,67. |
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| 作者姓名： | 陈飞 段新胜 方青春 顾湘 |
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| 作者单位： | 1. 中国地质大学<武汉>,湖北,武汉,430074
2. 江西省地质工程总公司,江西,南昌,330002 |
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| 摘 要： | 桩侧和桩底后压浆应在钻孔灌注桩成桩后3～7天进行。压浆过程中应控制灌浆压力以避免过分压裂土层。压浆量是影响后压浆质量和提高单桩承载力的关键因素。在渗透性小的地层后压浆机理主要是压密注浆，在渗透性大的地层的后压浆机理主要是渗透注浆。通过桩侧和桩底后压浆，瑞通广场钻孔灌注桩单桩承载力特征值提高了67％。
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| 关 键 词： | 桩侧后压浆 桩端后压浆 单桩竖向承载力特征值 压密注浆 渗入性注浆 |
| 文章编号： | 1004-5716(2004)04-0060-03 |
Pile Sides and Bottom Post Pressure Grouting |
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| CHENG Fei ,DUAN Xin sheng ,FANG Qing chui ,GU Xiang.Pile Sides and Bottom Post Pressure Grouting[J].West-china Exploration Engineering,2004,16(4):60-61,67. |
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| Authors: | CHENG Fei DUAN Xin sheng FANG Qing chui GU Xiang |
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| Affiliation: | CHENG Fei 1,DUAN Xin sheng 1,FANG Qing chui 2,GU Xiang 1 |
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| Abstract: | Pile Sides and Bottom Post Pressure Grouting should be done 3-7days after pile construction The pressure should be controlled in a certain limits to avoid hydrofracture to the soil. The amounts of cement slurry is the key factor affecting bearing capacity of the piles. The working mechanism in less penetrability stratum appeared to be compression while in penetrability one appeared to be penetrating mainly. The bearing capacity characteristic value of single pile in Wuhan Rueitong Building increased 67%. |
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| Keywords: | pile-bottom post pressure grouting pile-side post pressure grouting bearing capacity characteristic value compaction grouting permeating |
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