• 中国科学引文数据库(CSCD)来源期刊
  • 中文核心期刊中文科技核心期刊
  • Scopus RCCSE中国核心学术期刊
  • 美国EBSCO数据库 俄罗斯《文摘杂志》
  • 《日本科学技术振兴机构数据库(中国)》
二维码

隧道建设(中英文) ›› 2019, Vol. 39 ›› Issue (S2): 141-146.DOI: 10.3973/j.issn.2096-4498.2019.S2.018

• 研究与探索 • 上一篇    下一篇

承压水开采对天津滨海地铁车站-隧道系统影响的模拟研究

郭 璐1, 李 敬2, , 王东元2, 韩 莹2   

  1. (1. 盾构及掘进技术国家重点实验室, 河南郑州 450001; 2. 西南交通大学岩土工程系, 四川成都 610031)
  • 收稿日期:2019-04-17 出版日期:2019-12-31 发布日期:2020-04-04
  • 作者简介:郭璐(1988—),女,河南漯河人,2013 年毕业于新疆大学,材料加工工程专业,硕士,助理工程师,现从事盾构及掘进技术研究。 E-mail: 2316907065@ qq. com。 ?通信作者: 李敬, E-mail: lijing_swjt@ qq. com。
  • 基金资助:

    天津科技发展支撑计划 (#15PTYJGX00030); 西南交通大学课题(KYWX-2017-01)

Simulations for Effect of Confined Water Exploitation on Subway Station-tunnel System in Binhai Area of Tianjin

GUO Lu1, LI Jing2, , WANG Dongyuan2, HAN Ying2   

  1. (1. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, Henan, China; 2. Department of Geotechnical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China)
  • Received:2019-04-17 Online:2019-12-31 Published:2020-04-04

摘要:

为探索抽水沉降对地铁系统造成的影响,以天津地区软土环境中的地铁车站-隧道系统为例,采用三维渗流-应力耦合数值模拟方法,模拟承压水抽取引起的车站-隧道连接区间沉降情况,研究沉降和差异沉降对整个系统的影响。在一定假设条件下,定量分析地铁车站-隧道系统不同部位的沉降值以及沉降导致的应力集中等现象。结果表明: 1)抽水所在承压水层的压缩量最高, 沉降最大,在向上向下扩展中,压缩量逐渐降低; 2)沉降发生时,车站结构对沉降有一定抵抗,隧道结构抵抗沉降能力较弱,由此引起近站隧道的差异沉降,导致距离车站2 m 附近的隧道顶部产生较大应力集中。

关键词: 地面沉降, 隧道连接, 承压水开采, 隧道结构, 三维渗流-应力耦合有限元模型

Abstract:

In order to explore the impact of settlement caused by pumping on subway system, three dimensional seepagestress coupled numerical simulation method is used to simulate the settlement caused by confined water exploitation and to study its influence on the station-tunnel system in the soft soil area in Binhai district of Tianjin. Under certain assumptions, the settlement between different parts of metro station-tunnel system and the stress concentration caused are quantitatively analyzed. The results show that: (1) Compression and settlement in confined water layer is the largest, and compression decreases upwards and downwards; (2) When settlement occurs, station structure has certain resistance, while tunnel structure′s resistance is weaker, which causes differential settlement in tunnel near station and large stress concentration at the top of tunnel about 2 m near the station.

Key words: surface settlement, station-tunnel connection, confined water exploitation, tunnel structure, three dimensional seepage-stress coupled finite element model

中图分类号: