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深基坑局部深坑突涌稳定性计算研究

李瑛, 刘兴旺, 曹国强

李瑛, 刘兴旺, 曹国强. 深基坑局部深坑突涌稳定性计算研究[J]. 岩土工程学报, 2014, 36(3): 580-584. DOI: 10.11779/CJGE201403023
引用本文: 李瑛, 刘兴旺, 曹国强. 深基坑局部深坑突涌稳定性计算研究[J]. 岩土工程学报, 2014, 36(3): 580-584. DOI: 10.11779/CJGE201403023
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LI Ying, LIU Xing-wang, CAO Guo-qiang. Calculation of inrushing stability of local pits in deep excavation[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(3): 580-584. DOI: 10.11779/CJGE201403023
Citation: LI Ying, LIU Xing-wang, CAO Guo-qiang. Calculation of inrushing stability of local pits in deep excavation[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(3): 580-584. DOI: 10.11779/CJGE201403023
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深基坑局部深坑突涌稳定性计算研究  English Version

  • 浙江省建筑设计研究院,浙江 杭州 310006

详细信息
    作者简介:

    李 瑛(1985- )，男，江西九江人，博士，工程师，从事基坑围护结构设计和土力学原理研究。E-mail: liying3104@ 163.com。

  • 中图分类号: TU43

Calculation of inrushing stability of local pits in deep excavation

  • Zhejiang Province Architectural Design and Research Institute, Hangzhou 310006, China

摘要

    摘要
  • 摘要: 突涌稳定性关乎基坑安全和造价,而局部深坑是深基坑中突涌破坏最薄弱部位。基于局部深坑坑底土体沿铅垂面整体剪切破坏的假定,提出可考虑坑底土体抗剪强度、深坑几何尺寸和坑底加固的突涌稳定性计算公式,并研究计算公式适用范围和坑底土体抗剪强度计算方法。通过对杭州钱塘江两岸大量已安全施工完成深基坑工程的计算分析,得出以下结论：考虑原状土抗剪强度可使突涌稳定系数增加30%以上,常规坑底加固使其进一步增加20%左右,计算结果符合实际情况；坑底隔水层的侧面积和顶面积的比值越大,突涌稳定性越好；平面尺寸较大的基坑可通过分块开挖来确保突涌稳定性。
    Abstract: Inrushing may lead to a high construction cost or even failure of excavation, while local deep pit, including elevator shaft and collecting well, is the most dangerous place of inrushing in the deep excavation. Based on the assumption of general shear failure of soils between the pit bottom and the confined aquifer top, an equation is proposed to evaluate the inrushing stability of local deep pit, which can consider the effect of soil shear strength, plan size and reinforcement. Applicable conditions of the formula and the method to calculate the shear strength are also provided. Finally, the data of deep excavations along the Qiantang River in Hangzhou are analyzed. The following conclusions are drawn: (1) the shear strength has an increase of more than 30% in inrushing stability and an extra increase of about 20% in stability is achieved by reinforcement of pit bottom soils; (2) the possibility of inrushing decreases with the increase of the height of pit bottom soils and the ratio of pit circumference to pit area; (3) it can prevent inrushing by dividing a large excavation into lots of small ones.
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    • 参考文献(10)
  • [1] 丁春林. 软土地区承压水基坑突涌稳定计算法研究综述[J].地下空间与工程学报, 2007, 3(2): 333-338. (DING Chun-lin. Summary of study on calculation mehod of inrushing for confined water foundation pit in soft soil area[J]. Chinese Jouranal of Underground Space and Engineering, 2007, 3(2): 333-338. (in Chinese))
    [2] 梁勇然. 条形基坑突涌分析[J]. 岩土工程学报, 1996, 18(1): 75-79. (LIANG Yong-ran. Analysis of strip pit inrushing[J]. Chinese Journal of Geotechnical Engineeing, 1996, 18(1): 75-79. (in Chinese)).
    [3] 李 涛, 王 超. 高承压水地层开挖基坑底板隆起稳定性分析[J]. 岩土工程学报, 2009, 31(8): 1236-1241. (LI Tao, WANG Chao. Bottom heave stability during foundation pit excavation in soil layer with high artesian water pressure[J]. Chinese Journal of Geotechnical Engineeing, 2009, 31(8): 1236-1241. (in Chinese))
    [4] 杨建明, 郑 刚. 基坑降水中渗流破坏归类及抗突涌验算公式评价[J]. 岩土力学, 2009, 30(1): 261-264. (YANG Jian-ming, ZHENG Gang. Classification of seepage failures and opinion to formula for check bursting insatability in dewatering[J]. Rock and Soil Mechanics, 2009, 30(1): 261-264. (in Chinese))
    [5] 丁春林, 朱 恺, 叶 丹. 承压水引发基坑突涌塑性破坏抑制因素分析[J]. 地下空间与工程学报, 2009, 5(增刊2): 1594-1599. (DING Chun-lin, ZHU Kai, YE Dan. Analysis on inhibiting factors of inrushing plastic failure caused by confined water in foundation pit[J]. Chinese Journal of Underground Space and Engineering, 2009, 5(S2): 1594-1599. (in Chinese))
    [6] 谭松林. 考虑土体强度的建筑基坑突涌问题分析[J]. 地球科学-中国地质大学学报, 2002, 27(2): 209-211. (TAN Song-lin. Analyses of abrupt gush problem of soil and water based on strength of soil body in building foundation pit[J]. Earth Science - Journal of China University of Geosciences, 2002, 27(2): 209-211. (in Chinese))
    [7] 张忠苗, 赵玉勃, 吴世明, 等. 杭州庆春路过江隧道基坑围护体系设计分析[J]. 岩土工程学报, 2010, 32(9): 1399-1405. (ZHANG Zhong-miao, ZHAO Yu-bo, WU Shi-ming, et al. Design and analysis of retaining system of foundation pit of Qingchun Road River-Crossing Tunnel in Hangzhou[J]. Chinese Journal of Geotechnical Engineeing, 2010, 32(9): 1399-1405. (in Chinese))
    [8] 杨学林. 浙江沿海软土地基深基坑支护新技术应用和发展[J]. 岩土工程学报, 2012, 34(增刊1): 33-39. (YANG Xue-lin. Application and development of new technology for support of deep excavations in coastal areas of Zhejiang[J]. Chinese Journal of Geotechnical Engineeing, 2012, 34(S1): 33-39. (in Chinese))
    [9] 翁其平, 王卫东. 深基坑承压水控制的设计方法与工程应用[J]. 岩土工程学报, 2008, 30(增刊1): 343-348. (WENG Qi-ping, WANG Wei-dong. Design and application of control of confined groundwater in deep foundation pits[J]. Chinese Journal of Geotechnical Engineeing, 2008, 30(S1): 343-348. (in Chinese))
    [10] 李 瑛, 刘兴旺, 曹国强. 考虑土体抗剪强度的深基坑承压水突涌分析[J]. 浙江建筑, 2012, 29(增刊): 44-47. (LI Ying, LIU Xing-wang, CAO Guo-qiang. The effect of soil strength to deep foundation pit inrushing stability[J]. Zhejiang Construction, 2012, 29(S0): 44-47 (in Chinese))
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出版历程
  • 收稿日期:  2013-05-08
  • 发布日期:  2014-03-19

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