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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

期数:

2026年02期

页码:

174-184

栏目:

桥隧工程

出版日期:

2026-03-30

文章信息/Info

Title:

Analysis on impact of train vibration load on loess subway tunnel under water immersion conditions

文章编号:

1673-2049(2026)02-0174-11

作者:

翁效林^1,2,耿英俏^1,2,温博^1,2,邓国华³,于永堂⁴

(1. 长安大学 公路学院,陕西 西安 710064; 2. 长安大学 特殊地区公路工程教育部重点实验室,陕西 西安 710064; 3. 西安黄土地下工程技术咨询有限公司,陕西 西安 712000; 4. 中联西北工程设计研究院有限公司,陕西 西安 710077)

Author(s):

WENG Xiaolin^1,2, GENG Yingqiao^1,2, WEN Bo^1,2, DENG Guohua³, YU Yongtang⁴

(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 3. Xi'an Loess Underground Engineering Technology Consulting Co., Ltd., Xi'an 712000, Shaanxi, China; 4. China United Northwest Institute for Engineering Design & Research Co., Ltd., Xi'an 710077, Shaanxi, China)

关键词:

黄土湿陷;  列车振动荷载;  模型试验;  数值模拟;  动力响应

Keywords:

loess collapse;  train vibration load;  model experiment;  numerical simulation;  dynamic response

分类号:

TU433

DOI:

10.19815/j.jace.2025.01094

文献标志码:

A

摘要:

为研究浸水条件下基底湿陷时列车振动作用对黄土地铁隧道衬砌结构和周围土体的影响,开展不同浸水量和振动频率下的模型试验,采用有限元数值模拟方法对比分析地表沉降、隧道结构衬砌应力变形及振动加速度的变化规律。结果表明:浸水范围内,随振动频率增大,地表沉降量显著增大,但由于振动作用会引起土体二次湿陷变形,在振动频率增量相同时地表沉降量的变化明显减小; 隧道竖向位移与浸水量存在正向增长关系; 隧道轴力值与弯矩值随浸水湿陷增加整体呈上升趋势,其中隧道拱底处变化均最为显著; 在振动荷载作用下,轴力发生突变后趋于平稳,其中隧道拱底与拱脚位置处变化最为明显; 列车振动荷载作用下,湿陷区域隧道竖向加速度与竖向位移均经历急变区后逐渐趋于平稳,不同列车运行速度下隧道基底土体竖向加速度与位移变化趋势相同,隧道上部竖向加速度明显小于隧道下部,且随距隧道距离增大,列车运行速度对竖向加速度的影响逐渐减小; 列车振动荷载对隧道结构动应力影响最不利位置为隧道拱腰处。

Abstract:

To study the influence of train vibration on the lining structure and surrounding soil of the loess subway tunnel under the condition of water immersion, the model tests under different water immersion and vibration frequency conditions were carried out, and the laws of surface settlement, stress deformation and vibration acceleration of the lining of the tunnel structure were compared and analyzed by the finite element numerical simulation method. The results show that within the water immersion range, the surface settlement increases significantly with the increase of vibration frequency, but due to the secondary collapse deformation of the soil caused by vibration, the surface settlement decreases significantly when the vibration frequency increment is the same. There is a linear growth relationship between the tunnel vertical displacement and the water immersion volume. The axial force and bending moment values of the tunnel show an overall upward trend with the increase of water immersion collapse, among which the changes at the arch bottom are the most significant. Under the action of vibration load, the axial force tends to be stable after the sudden change, and the changes at the arch bottom and arch foot of the tunnel are the most obvious. The vertical acceleration and vertical displacement of the tunnel in the collapse area under the action of train vibration load gradually tend to be stable after experiencing a sudden change zone, and the vertical acceleration and displacement of the tunnel base soil at different train running speeds have the same trend, the vertical acceleration at the upper part of the tunnel is significantly smaller than that of the lower part of the tunnel, and it continues to decay with the increase of the distance from the tunnel. The most unfavorable place for the influence of train load on the dynamic stress of the tunnel structure is the tunnel waist.

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相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2025-01-26
基金项目:国家自然科学基金项目(42277151,52178355); 陕西省秦创原“科学家+工程师”队伍建设项目(S2024-YD-QCYK-0027); 中央高校基本科研业务费专项资金项目(300102214201)
作者简介:翁效林(1980-),男,工学博士,教授,博士生导师,E-mail:49768532@qq.com。
Author resume: WENG Xiaolin(1980-), male, PhD, professor, E-mail: 49768532@qq.com.

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更新日期/Last Update: 2026-04-01