基于箱涵顶进法的隧道下穿车站流固耦合分析-《高速铁路技术》

文章信息/Info

Title:: Fluid-solid Coupling Analysis of Tunnel Passing under Station Site Based on Box Culvert Jacking Method

Author(s):: ZHU Yongquan; ZHU Zhengguo; WANG Daoyuan; FANG Zhichun; Shijiazhuang Tiedao University, Shijiazhuang 050043, China

Keywords:: underpass|tunnel|station and yard|box culvert jacking method|fluid-solid coupling

摘要:: 文章以下穿某车站站场富水砂砾地层隧道为研究背景，首先根据工程结构自身的地质、地层、施工条件等特点，制定变形控制标准以及变形控制研究指标；然后考虑耦合与非耦合两种施工工况对箱涵顶进法下穿隧道进行数值模拟。结果表明：（1）耦合作用下与非耦合作用下地表沉降以及隧道竖向位移趋势基本一致，但耦合作用下数值要明显大于非耦合作用；（2）隧道拱顶沉降以及水平收敛趋势不一致，隧道开挖前期，耦合作用下位移要小于非耦合作用，随着隧道的持续开挖，位移逐渐增大最后趋于稳定；（3）总体来说，耦合情况下（不降水施工）隧道施工引起的各项位移均比非耦合情况下相应增大。

Abstract:: The research background is the tunnel passing through the water-rich gravel stratum of Xinxiang Railway Station. Firstly, according to the characteristics of the geology, stratum, construction conditions of the engineering structure itself, the deformation control standard and the research index of the deformation control are formulated. Then, considering the coupling and uncoupling construction conditions, the numerical simulation of box culvert jacking method underpass tunnel is carried out. The results show that:(1) the trend of ground subsidence and tunnel vertical displacement under coupling action and uncoupling action is basically the same, but the numerical value under coupling action is obviously larger than that under uncoupling action; (2) The settlement of tunnel vault is inconsistent with the trend of horizontal convergence. In the early stage of tunnel excavation, the displacement under coupling action is smaller than that under uncoupling action. With the continuous excavation of tunnel, the displacement gradually increases and finally tends to be stable; (3) Generally speaking, the displacement caused by tunnel construction under coupling condition (no dewatering) is larger than that under uncoupled condition.

备注/Memo:: 作者简介:朱永全(1960-),男,博士,教授。基金项目:国家自然科学基金（51778380）；河北省高校百名创新人才支持计划（Ⅲ）（SLRC2017054）；河北省人才工程培养经费资助项目（A201802005）引文格式:朱永全, 朱正国, 王道远, 等. 基于箱涵顶进法的隧道下穿车站流固耦合分析[J]. 高速铁路技术,2019,10(5):1-4.ZHU Yongquan, ZHU Zhengguo, WANG Daoyuan, et al. Fluid-solid Coupling Analysis of Tunnel Passing under Station Site Based on Box Culvert Jacking Method[J]. High Speed Railway Technology, 2019, 10(5):1-4.