管廊隧道开挖对上覆在建深基坑影响的三维有限元分析

戴轩; 徐管应; 霍海峰; 程雪松; 闫晓荣

doi:10.11779/CJGE2019S1006

管廊隧道开挖对上覆在建深基坑影响的三维有限元分析 English Version

1. 中国民航大学机场学院,天津 300300;
2. 天津市市政工程设计研究院,天津 300392;
3. 天津大学滨海土木工程结构与安全教育部重点试验室,天津 300072

基金项目: 国家自然科学基金青年基金项目（51808548,51508558）; 中中央高校基本科研业务费中国民航大学专项资助项目（3122018C017）

详细信息

作者简介:
戴轩(1988—),男,讲师,博士,主要从事岩土工程灾害、机场岩土工程等方面的教学和科研工作。E-mail:tianjindaixuan@126.com。

通讯作者:
霍海峰，E-mail：hhf_1117@126.com

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出版历程
- 收稿日期: 2019-04-27
- 发布日期: 2019-07-14

Three-dimensional finite element analysis of impact of utility tunnel construction on overlying deep excavations

1. College of Airport Engineering, Civil Aviation University of China, Tianjin 300300, China;
2. Tianjin Municipal Engineering Design and Research Institute, Tianjin 300392, China;
3. MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University, Tianjin 300072, China

摘要

摘要: 以沈阳某盾构法综合管廊隧道下穿在建盖挖顺做法基坑为工程实例,在对工程实测数据进行分析基础上,利用小应变硬化本构模型进行三维有限元数值模拟研究,分析了盾构隧道下穿在建基坑引发的围护结构位移、水平支撑变形和基坑内既有结构变形。研究表明,利用小应变硬化本构模型可对盾构隧道下穿在建基坑问题进行较好的模拟;盾构隧道下穿基坑将引发围护结构顶部产生差异沉降;基坑内已施工完成的结构和水平支撑将发生“两边沉降大,中间沉降小”的上凸型变形;合理设计的立柱可有效控制盾构下穿引发的水平支撑沉降。
- 盾构隧道 /
- 深基坑 /
- 风险工程 /
- 综合管廊 /
- 三维有限元分析 /
- 小应变硬化本构
Abstract: A shielding method utility tunnel is constructed underneath the foundation pit using the cover-excavation method in Shenyang. Based on the analysis and comparison of the measured data of this project, a three-dimensional finite element model is established using the HSS constitutive model. The deformation of the retaining structures, the strut settlement and the deformation of the finished structures in the pit caused by tunnelling are analyzed. The research shows that the characteristics of the tunnelling underneath the foundation pit can be described appropriately using the HSS model. The underneath tunnelling will induce differential settlement at the top of the retaining structures. The settlement of the finished structures and struts in the foundation pit increases gradually from the middle part to the two sides near the retaining structures. The reasonablely designed columns can control the settlement of the struts effectively.
- shield tunnel /
- deep excavation /
- risk engineering /
- utility tunnel /
- 3D FEM /
- HSS model

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参考文献(7)

[1]	余常俊. 城市地下综合管廊浅析[J]. 公路, 2016, 10: 153-157. (YU Chang-jun.Brief analysis of city underground utility gallery[J]. Highway, 2016, 10: 153-157. (in Chinese))
[2]	CHAKERI H, OZCELIK Y, UNVER B.Effects of important factors on surface settlement prediction for metro tunnel excavated by EPB[J]. Tunnelling and Underground Space Technology, 2013, 36: 14-23.
[3]	DIAS D, KASTNER R.Movements caused by the excavation of tunnels using face pressurized shields — Analysis of monitoring and numerical modeling results[J]. Engineering Geology, 2013, 152(1): 17-25.
[4]	陈江, 陈思明, 傅金阳, 等. 盾构侧穿邻近桥桩施工影响及加固措施研究[J]. 公路交通科技, 2016, 33(7): 97-102. (CHEN Jiang, CHEN Si-ming, FU Jin-yang, et al.Study on effect of shield tunneling side-crossing adjacent piles and reinforcement Measures[J]. Journal of Highway and Transportation Research and Development, 2016, 33(7): 97-102. (in Chinese))
[5]	王国富, 孙捷城, 路林海, 等. 盾构隧道近距离下穿高架桥主动预支护研究[J]. 现代隧道技术. 2017, 54(6): 195-202. (WANG Guo-fu, SUN Jie-cheng, LU Lin-hai, et al.Active pre-support technology for a shield tunnel approaching to a proposed viaduct pile[J]. Modern Tunnelling Technology, 2017, 54(6): 195-202. (in Chinese))
[6]	郑刚, 杜一鸣, 刁钰, 等. 基坑开挖引起邻近既有隧道变形的影响区研究[J]. 岩土工程学报, 2016, 38(4): 599-612. (ZHENG Gang, DU Yi-ming, DIAO Yu, et al.Influenced zones for deformation of existing tunnels adjacent to excavations[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(4): 599-612. (in Chinese))
[7]	HSIEH P, OU C.Shape of ground surface settlement profiles caused by excavation[J]. Canadian Geotechnical Journal, 1998, 35(6): 1004-1017.