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[1]毛正君,狄建强,樊文柱,等.共同管沟深基坑现场变形监测与数值模拟分析[J].中国安全生产科学技术,2016,12(9):103-108.[doi:10.11731/j.issn.1673-193x.2016.09.019]
　MAO Zhengjun,DI Jianqiang,FAN Wenzhu,et al.Field monitoring and numerical simulation analysis on deformation of deep foundation pit for utility tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(9):103-108.[doi:10.11731/j.issn.1673-193x.2016.09.019]
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共同管沟深基坑现场变形监测与数值模拟分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年9期
页码:
103-108
栏目:
现代职业安全卫生管理与技术
出版日期:
2016-09-30

文章信息/Info

Title:
Field monitoring and numerical simulation analysis on deformation of deep foundation pit for utility tunnel
文章编号:
1673-193X(2016)-09-0103-06
作者:
毛正君1; 狄建强2; 樊文柱2; 魏荣誉1; 朱森1; 宋慧琴3
（1. 西安科技大学 地质与环境学院，陕西 西安 710054；2. 陕西工程勘察研究院，陕西 西安 710068；3. 西安科技大学 测绘科学与技术学院，陕西 西安 710054）
Author(s):
MAO Zhengjun1;  DI Jianqiang2;  FAN Wenzhu2;  WEI Rongyu1;  ZHU Sen1;  SONG Huiqin3
(1. College of Geology & Environment, Xi’an University of Science and Technology, Xi’an Shaanxi 710054, China;2. Shaanxi Institute of Engineering Prospecting, Xi’an Shaanxi 710068, China;3. College of Geomatics, Xi’an University of Science and Technology, Xi’an Shanxi 710054, China)
关键词:
共同管沟; 深基坑; 变形监测; 数值模拟
Keywords:
utility tunnel;  deep foundation pit;  deformation monitoring;  numerical simulation
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2016.09.019
文献标志码:
A
摘要:
为了分析共同管沟深基坑边坡的变形规律及其对邻近建筑物的影响作用，以三星深基坑工程为例，采用数值模拟分析并进行现场变形监测验证。结果表明：降水措施对深基坑开挖引起的水平位移作用不大，而对竖向位移作用较大；随着深基坑开挖深度的不断加大，边坡土体的水平位移和竖向位移总体呈现增大的趋势，最大水平位移值表现为从坡脚向坡脚上方移动；原地下水位线以上所开挖边坡的最大竖向位移都发生在坡脚处，采用降水措施后，原地下水位线以下所开挖边坡的最大竖向位移出现在原地下水位附近。现场变形监测与数值模拟计算结果吻合度较高，说明土体参数的选取合理。研究成果可提升城市共同管沟深基坑建设安全设计及施工水平、降低工程风险损失。
Abstract:
In order to analyze the deformation law of deep foundation pit slop for utility tunnel and the influence on adjacent buildings, taking the deep foundation pit construction project of Samsung as example, the numerical simulation analysis was carried out, and the field monitoring of deformation was conducted for validation. The results showed that dewatering measures had a little influence on the horizontal displacement caused by excavation of deep foundation pit and great influence on the vertical displacement. The horizontal and vertical displacement of slope soil generally presented an increasing trend with the increasing excavation depth of deep foundation pit. The maximum value of horizontal displacement manifested as moving upward from the toe of slope. Above the initial groundwater level, the maximum vertical displacement of slope occurred at the toe of slope, and under the initial groundwater level, the maximum vertical displacement of slope appeared around the initial groundwater level when dewatering. The results of field monitoring and numerical simulation of deformation had a high goodness of fit, which showed that the selection of soil parameters was reasonable. It can enhance the safety design and construction level of deep foundation pit for urban utility tunnel, and reduce the risk loss of project.

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备注/Memo

备注/Memo:
国家自然科学基金项目（41572264）；西安科技大学培育基金项目（201307）；西安科技大学博士启动金项目（2014QDJ005）；大学生创新创业训练计划项目（201510704095）
更新日期/Last Update: 2016-12-08