岩溶地区桩基础施工

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摘要研究目的：岩溶地区桩基础施工难度大, 常见的施工问题有坍孔、漏浆、卡钻、埋钻、漏混凝土等, 严重影响桩基础施工质量及安全, 研究比较切实可行的施工措施, 确保施工顺利进行很有必要。

研究结论：中铁二院和中铁八局在云南省大理至丽江铁路金井坝大桥、西炭街大桥桩基础施工中经过反复研究、多次试验, 总结出了用注浆管压浆护壁挖孔法、钻孔注浆法等工法, 成功地解决了岩溶地区桩基础施工困难问题。

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	侯勇
	王蓉川

关键词 ：岩溶, 注浆管压浆护壁挖孔法 , 钻孔注浆法, 桩基础

Abstract：Research purposes：It is very difficult to conduct construction of the pile foundation in karst area because hole collapse, leakage of thick liquid, drill jam, drill burying and concrete leakage often happen during construction. These seriously affect the quality and security of the construction of pile foundation. Thus, it is very necessary to do the study on the measures to be taken for ensuring the smooth construction.

Research conclusions：Through the repeatedly studies and tests in constructions of the pile foundations of Jinjingba Bridge and Xitanjie Bridge of Dali-Lijiang Railway in Yunnan Province by China Railway Eryuan Engineering Group Co. Ltd and China Railway 8th Bureau Group Co. Ltd, this paper offers the mud-jack with grouting tube and boring protected wall method and the bored grouting method used for the construction of the pile foundation in karst area. Application of these methods can solve the problems mentioned above in construction of pile foundation in karst area.

Key words： karst mud-jack with grouting tube and boring protected wall method bored grouting method pile Foundation

收稿日期: 2009-05-07

PACS:	TU 471
	TV 473

作者简介: 侯勇, 1964年出生, 男, 高级工程师, 中铁二院工程集团有限责任公司桥梁所总工程师; 王蓉川, 1963年出生, 女, 高级工程师。

引用本文:

侯勇；王蓉川. 岩溶地区桩基础施工[J]. 铁道工程学报, 2010, 27(2): 60-63.
HOU Yong, WANG Rong-chuan. Construction of Pile Foundation in Karst Area. 铁道工程学报, 2010, 27(2): 60-63.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2010/V27/I2/60

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