潜水地区基坑降水诱发地面沉降的一种改进算法

doi:10.3785/j.issn.1008-973X.2016.11.021

浙江大学学报(工学版)

土木工程与水利工程

潜水地区基坑降水诱发地面沉降的一种改进算法

吴意谦,朱彦鹏

1. 兰州工业学院土木工程学院,甘肃兰州 730050
2. 兰州理工大学土木工程学院,甘肃兰州 730050
3. 甘肃省土木工程防灾减灾重点实验室,甘肃兰州 730050
4. 西部土木工程防灾减灾教育部工程研究中心,甘肃兰州 730050

Improved calculation of settlement due to dewatering of foundation pits in phreatic aquifer

WU Yi qian,ZHU Yan peng

1. College of Civil Engineering,Lanzhou Institute of Technology,Lanzhou 730050,China;
2. School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China;
3. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou 730050,China.
4. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou 730050,China

全文: PDF(1906 KB) HTML

摘要：

针对潜水地区的基坑工程中抽降潜水会引发周围土体沉降,带来一系列的工程事故问题,忽略群井效应后基于裘布依假设求出基坑降水后井周地下水位的降落漏斗曲线方程.引入疏干带非饱和土体的有效应力原理,同时考虑降水产生的渗流力而引发的最终附加应力在水平方向上存在分量,采用分层总和法分别计算水位降落漏斗曲线上下疏干土与饱和土各自的竖向沉降量,叠加后得到抽降水后井周地表的最终总沉降量.通过数值模拟计算并结合具体的工程实例监测数据进行对比分析.研究结果表明,提出的改进计算方法具有较高的工程实用价值.

Abstract:

The settlement of surrounding soils will be caused by dewatering engineering of foundation pit in phreatic aquifer, which easily leads to a series of accidents. in order to solve the problem, The effect of the group wells was ignored. The equation of the water-table depression was solved on the supposition of Dupuit presupposition. The effective stress principle of unsaturated soil in draining areas was leaded and the horizontal component of the additional stress due to seepage force at the same time was considered. Then the settlement of the soil layers above and under the cone of water-table depression was respectively calculated based on the layer-wise summation method, and the actual settlement around the wells after dewatering was the sum of the both. The comparison and analysis with numerical simulation and monitoring of the engineering examples show that the calculation method has a practical engineering value．

出版日期: 2016-11-01

TU 473

基金资助:

国家“十一五”科技支撑计划资助项目（2011BAK12B07）；国家自然科学基金资助项目（50978129）.

作者简介: 吴意谦（1986- ），男，博士，讲师.主要从事岩土工程支挡结构等方面的研究. ORCID: 0000-0003-1655-9506. E-mail:371901233@qq.com

	服务
	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

引用本文:

吴意谦,朱彦鹏. 潜水地区基坑降水诱发地面沉降的一种改进算法[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.11.021.

WU Yi qian,ZHU Yan peng. Improved calculation of settlement due to dewatering of foundation pits in phreatic aquifer. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.11.021.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.11.021 或 http://www.zjujournals.com/eng/CN/Y2016/V50/I11/2188

［1］唐业清. 基坑工程事故分析与处理［M］. 北京: 中国建筑工业出版社, 1999: 1-19．
［2］丁春林. 软土地区弱透水层承压水基坑突涌计算模型研究［J］. 工程力学, 2008, 25(10): 194-199．
DING Chunlin. A study on calculation model of inrushing for foundation pit of semipervious aquiclude with confined water in soft soil area ［J］. Engineering Mechanics, 2008, 25(10): 194-199.
［3］ LEWIS R W, SCHREFLER B. A fully coupled consolidation model of the subsidence of Venice ［J］. Water Resource Research, 1978, 14(2) :465-473．
［4］叶为民, 赵少阳, 陈永贵，等. 二元结构土层分布区工程降水诱发地面沉降变形研究［J］. 中南大学学报:自然科学版, 2012, 43(11): 4446-4450．
YE Weimin, ZHAO Shaoyang, CHEN Yonggui， et al. Dewateringinduced land subsidence in binarystructure soil ［J］. Journal of Central South University :Science and Technology, 2012, 43(11): 4446-4450.
［5］原华, 张庆贺, 张建伟. 侧摩阻力约束下降水引起的地面沉降估算方法［J］. 上海交通大学学报, 2013, 47(8): 1329-1334．
YUAN Hua, ZHANG Qinghe, ZHANG Jianwei. Estimation method for surface subsidence induced by dewatering under the constraint of lateral friction ［J］. Journal of Shanghai Jiaotong University, 2013, 47(8): 1329-1334.
［6］王建秀, 吴林高, 朱雁飞,等. 地铁车站深基坑降水诱发沉降机制及计算方法［J］. 岩石力学与工程学报, 2009, 28(5): 1010-1019．
WANG Jianxiu, WU Lingao, ZHU Yanfei， et al. Mechanism of dewateringinduced ground subsidence in deep subway station pit and calculation method ［J］. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(5): 1010-1019．
［7］李琳, 张建根, 杨敏. 疏干降水引起坑后地面沉降的一种简化计算方法［J］. 岩土工程学报, 2008, 30(增): 306-309．
LI Lin, ZHANG Jiangen, YANG Min. Simplified analysis of settlement due to dewatering of foundation pits ［J］. Chinese Journal of Geotechnical Engineering, 2008, 30(supp): 306-309．
［8］杨敏, 卢俊义. 上海地区深基坑周围地面沉降特点及其预测［J］. 同济大学学报:自然科学版, 2010, 38(2): 194-199．
YANG Min, LU Junyi. Characteristics and prediction of ground settlement around deep excavation in shanghai ［J］. Journal of Tongji University∶Natural Science, 2010, 38(2): 194199．
［9］ JSJ120—2012,建筑基坑支护技术规程［S］. 北京：中国建筑工业出版社, 2012.
JSJ120—2012. Technical specification for retaining and protection of building foundationexcavation ［S］. Beijing: China building industry press, 2012.
［10］张晓婷. 基坑降水对支护结构及土体变形影响因素的数值分析［D］. 太原: 太原理工大学, 2013．
ZHANG Xiaoting. Numerical analysis of the influencing factors of supporting structure and soil deformation caused by foundation pit precipitation［D］. Taiyuan: Taiyuan university of technology, 2013.
［11］王俊杰,陈亮,梁越. 地下水渗流力学［M］. 北京: 中国水利水电出版社, 2013．
［12］弗雷德隆德 D G, 拉哈尔佐 H著, 陈仲颐,等译. 非饱和土土力学［M］. 北京: 中国建筑工业出版社, 1997．
［13］陈崇希, 林敏. 地下水动力学［M］. 武汉: 中国地质大学出版社, 1999: 59-61．
［14］吴意谦,朱彦鹏. 考虑疏干带非饱和土影响下基坑降水引起地面沉降的计算［J］. 工程力学, 2016, 33(3): 179-187．
WU Yiqian,ZHU Yanpeng. Calculation of settlement considering unsaturated soil influence of the dewatering of foundation pits［J］. Engineering Mechanics, 2016, 33(3): 179-187.
［15］吴意谦,朱彦鹏. 考虑侧向变形下抽降潜水引起地面沉降的计算［J］. 华中科技大学学报:自然科学版, 2016, 44(4): 116-120．
WU Yiqian,ZHU Yanpeng. Calculation of settlement considering lateral deformation due to pumping of phreatic aquifer［J］. Journal of Huazhong University of Science and Technology:Natural Science Edition, 2016.44(4):116-120.

[1]	袁炳祥, 吴跃东, 陈锐, 冯仲文, 汪亦显. 侧向受荷桩周土体内部位移场的模型试验研究[J]. 浙江大学学报(工学版), 2016, 50(10): 2031-2036.
[2]	徐铨彪,陈刚,贺景峰,龚顺风. 复合配筋混凝土预制方桩抗弯性能试验[J]. 浙江大学学报(工学版), 2016, 50(9): 1768-1776.
[3]	单华峰, 夏唐代, 俞峰, 胡军华, 潘金龙. 地下增层开挖托换桩的屈曲稳定临界荷载分析[J]. 浙江大学学报(工学版), 2016, 50(8): 1425-1430.
[4]	何奔,王欢,洪义,王立忠,赵长军,秦肖. 竖向荷载对黏土地基中单桩水平受荷性能的影响[J]. 浙江大学学报(工学版), 2016, 50(7): 1221-1229.
[5]	邱子义,韩同春,豆红强,李智宁. 桩后及桩侧土拱共同作用的抗滑桩桩间距分析[J]. 浙江大学学报(工学版), 2016, 50(3): 551-558.
[6]	庾焱秋,王奎华,吕述晖,徐礼阁. 传感器黏结剂对低应变测试曲线的影响[J]. 浙江大学学报(工学版), 2015, 49(9): 1725-1730.
[7]	苟尧泊,俞峰,夏唐代. 增层开挖引起既有预制桩残余应力释放分析[J]. 浙江大学学报(工学版), 2015, 49(5): 969-974.
[8]	刘念武, 龚晓南, 俞峰. 大直径钻孔灌注桩的竖向承载性能[J]. 浙江大学学报(工学版), 2015, 49(4): 763-768.
[9]	王奎华,李振亚,吕述晖,张鹏,庾焱秋. 静钻根植竹节桩纵向振动特性及应用研究[J]. 浙江大学学报(工学版), 2015, 49(3): 522-530.
[10]	龙凡, 王立忠, 李凯, 李玲玲. 舟山黏土和温州黏土灵敏度差别成因[J]. 浙江大学学报(工学版), 2015, 49(2): 218-224.
[11]	王奎华,陈鑫,吕述晖,吴文兵,李振亚. 自由振动时带承台单桩的纵向动力特性[J]. 浙江大学学报(工学版), 2014, 48(9): 1595-1602.
[12]	刘念武,龚晓南,楼春晖. 软土地区基坑开挖对周边设施的变形特性影响[J]. 浙江大学学报(工学版), 2014, 48(7): 1141-1147.
[13]	伍程杰, 龚晓南, 俞峰, 楼春晖, 刘念武. 既有高层建筑地下增层开挖桩端阻力损失[J]. 浙江大学学报(工学版), 2014, 48(4): 671-678.
[14]	胡安峰, 张光建, 贾玉帅, 张晓冬. 刚度衰减模型在大直径桩累积侧向位移分析中的应用[J]. J4, 2014, 48(4): 721-726.
[15]	王忠瑾,谢新宇,方鹏飞,李金柱,金伟良. 刚性长短组合桩的非线性沉降计算分析[J]. J4, 2014, 48(3): 463-470.

Viewed

Full text

Abstract

Cited

Shared

Discussed