考虑围护结构影响的深基坑降压井布置方案优化

王康达; 童立元; 王占生; 刘松玉

doi:10.11779/CJGE2014S2045

考虑围护结构影响的深基坑降压井布置方案优化 English Version

1. 东南大学岩土工程研究所,江苏南京 210096;
2. 苏州轨道交通有限公司,江苏苏州 215004

基金项目: “十二五”国家科技支撑计划项目（2012BAJ01B02）; 苏州轨道交通有限公司科学基金项目（SZGDKY201303）

详细信息

作者简介:
王康达(1992- ),男,江苏扬州人,硕士研究生,主要从事岩土工程、地下工程方面的研究。E-mail: 729527503@qq.com。

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

Optimization of dewatering wells in deep foundation pit considering effect of retaining structure

1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China;
2.Suzhou Railway Company, Suzhou 215004, China

摘要

摘要: 为研究深基坑围护结构对降压井降水效果的影响,以苏州地铁4号线某车站深基坑降水工程为例,通过对未考虑围护结构的初步设计方案与考虑围护结构的优化方案的对比,运用Modflow数值分析软件模拟计算初步设计方案和优化方案的地下水位变化,并对方案的合理性进行评价。结果表明,未考虑围护结构影响的初步设计方案在基坑内不同位置的水位变化不均匀,坑内最大水位差达到了3.5 m,而考虑围护结构影响的优化方案通过非均匀布井,可以有效的使水位变化均匀,坑内最大水位差仅有0.5 m,符合工程实际要求。
- 基坑 /
- 围护结构 /
- 减压降水 /
- 非均匀布井
Abstract: To analyze the effect of retaining structure on dewatering wells in deep foundation pit, a dewatering project of deep foundation pit in Suzhou Metro Line 4 is taken as an example. First, the initial design project and the optimized design project which considers the effect of building envelope are compared. Second, Modflow is used to simulate changes of water level and to evaluate the rationality of the design. The results show that the initial design project which does not consider the effect of retaining structure causes the water level no uniform, and the maximum water level difference reaches 3.5 m. While the optimized design project can make water level uniform, and the maximum water level difference is only 0.5 m, which satisfies the dewatering requirements.
- foundation pit /
- retaining structure /
- dewatering /
- nonuniform well

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参考文献(6)

[1]	吴林高. 工程降水设计施工与基坑渗流理论[M]. 北京: 人民交通出版社, 2003. (WU Lin-gao. Design and execution of dewatering & theory of seepage in deep excavation[M]. Beijing: China Communication Press,2003,(in Chinese))
[2]	孙文娟, 沈水龙, 李耀良, 等. 基坑开挖前降水引起的地面沉降的工程案例分析[J]. 岩土工程学报, 2008, 30(增刊): 314-318. (SUN Wen-juan, SHEN Shui-long, LI Yao-liang, et al. Case study on settlement around unexcavated foundation pit due to groundwater pumping[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(S0): 314-318. (in Chinese))
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[4]	周志芳, 朱宏高, 陈静, 等. 深基坑降水与沉降的非线性耦合计算[J]. 岩土力学, 2004, 25(12): 1984-1988. (ZHOU Zhi-fang, ZHU Hong-gao, CHEN Jing, et al. Nonlinear coupling calculation between dewatering and settlement of deep foundation pits[J]. Rock and Soil Mechanics, 2004, 25(12): 1984-1988. (in Chinese))
[5]	王建秀, 郭太平, 吴林高, 等. 深基坑降水中墙-井作用机理及工程应用[J]. 地下空间与工程学报, 2010, 6(3): 564-570. (WANG Jian-xiu, GUO Tai-ping, WU Lin-gao, et al. Mechanism and application of interaction between underground wall and well in dewatering for deep excavation[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(3): 564-570. (in Chinese))
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文章访问数: 322
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考虑围护结构影响的深基坑降压井布置方案优化 English Version

作者简介: 王康达(1992- ),男,江苏扬州人,硕士研究生,主要从事岩土工程、地下工程方面的研究。E-mail: 729527503@qq.com。

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出版历程

Optimization of dewatering wells in deep foundation pit considering effect of retaining structure

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出版历程

目录

作者简介:
王康达(1992- ),男,江苏扬州人,硕士研究生,主要从事岩土工程、地下工程方面的研究。E-mail: 729527503@qq.com。