浆囊袋压力型土钉新技术及工作机理研究

张旭辉; 吴欣; 俞建霖; 何萌; 龚晓南

doi:10.11779/CJGE2014S2038

浆囊袋压力型土钉新技术及工作机理研究 English Version

张旭辉¹,
吴欣¹,
俞建霖^{2, 3},
何萌⁴,
龚晓南^{2, 3}

1. 宁波半边山投资有限公司,浙江宁波 315732;
2. 浙江大学软弱土与环境土工教育部重点实验室,浙江杭州 310058;
3. 浙江大学滨海和城市岩土工程研究中心,浙江杭州 310058;
4. 汉嘉设计集团股份有限公司,浙江杭州 310005

详细信息

作者简介:
张旭辉(1975- ),男,博士,高级工程师,主要研究方向为软土地基处理。E-mail: zhangxiuhui@21cn.com。

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出版历程
- 收稿日期: 2014-07-27
- 发布日期: 2014-07-27

New slurry pressure type soil-nailing technology and its working mechanism

ZHANG Xu-hui¹,
WU Xin¹,
YU Jian-lin^{2, 3},
HE Meng⁴,
GONG Xiao-nan^{2, 3}

1. Ningbo Half-Hill Investment Co., Ltd., Ningbo 315732, China;
2. Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310058, China;
3. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
4. Hanjia Design Group Co., Ltd., Hangzhou 310005, China

摘要

摘要: 为解决软土地基中土钉抗拔力小、施工质量难以控制的问题,开发了浆囊袋压力型土钉新技术,介绍了其工艺原理和施工技术,提出了相应的承载力计算方法。最后采用三维有限元分析方法研究了浆囊袋压力型土钉的荷载传递规律,分析了注浆体直径、长度以及地基土质条件的影响。
- 土钉 /
- 浆囊袋 /
- 压力型 /
- 承载力 /
- 工作机理
Abstract: In soft soil foundation, the strength of soft soils is low and the quality of the construction of the conventional soil-nailing is hard to be controlled. To solve these problems, new slurry pressure type soil nailing technology is developed, and the soil-nailing ultimate resistance is calculated by carrying out the field pullout tests. In addition, the finite element software is adopted to establish the three finite element analysis model for slurry pocket pressure type soil nailing. The transfer law of load is studied, and the effects of the soil conditions and the dimensions of the grouting are analyzed.
- soil nailing /
- slurry pocket /
- pressure type /
- bearing capacity /
- working mechanism

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参考文献(10)

[1]	张旭辉. 锚管桩复合土钉支护稳定性研究[D]. 杭州: 浙江大学, 2002. (ZHANG XU-hui. Stability of channel-steel- piles composite soil nailing[D]. Hangzhou: ZheJiang University, 2002. (in Chinese))
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[6]	梁勇彪, 徐霞琴. 土钉墙支护在极软土基坑工程中的应用[J]. 岩土工程师, 2003, 15(3): 42-43. (LIANG Yong-biao, XU Xia-qin. Application of soil Nailing in excavation of soft ground[J]. Geotechnical Engineer, 2003, 15(3): 42-43. (in Chinese))
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[8]	吴铭炳. 软土地基土钉支护研究[J]. 岩土工程学报, 1999, 21(6): 687-690. (WU Ming-bing. The study for soil nailing in soft clay foundation excavation[J]. Chinese of Geotechnical Engineering, 1999, 21(6): 687-690. (in Chinese))
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[10]	庞晓明, 沈水龙, 许烨霜. 复合土钉支护基坑的工程实例分析[J]. 岩土工程学报, 2006, 28(增刊): 1838-1841. (PANG Xiao-ming, SHEN Shui-long, XU Ye-shuang. Analysis of behavior of nailing supported mixed soil-cement wall in excavation[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(S0): 1673-1676. (in Chinese))

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