[1]刘毅,程谦恭,陈梦发,等.某红层深挖路堑基底上拱离心模型试验研究[J].高速铁路技术,2023,14(02):70-74.[doi:10.12098/j.issn.1674-8247.2023.02.014]
 LIU Yi,CHENG Qiangong,CHEN Mengfa,et al.An Experimental Study on Centrifugal Model of Upheaving of Deep Cutting Base in the Red Bed[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(02):70-74.[doi:10.12098/j.issn.1674-8247.2023.02.014]
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某红层深挖路堑基底上拱离心模型试验研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
14卷
期数:
2023年02期
页码:
70-74
栏目:
出版日期:
2023-04-30

文章信息/Info

Title:
An Experimental Study on Centrifugal Model of Upheaving of Deep Cutting Base in the Red Bed
文章编号:
1674-8247(2023)02-0070-05
作者:
刘毅1程谦恭2陈梦发2常仁举2
1.中铁二院工程集团有限责任公司,? 成都610031;2.西南交通大学,? 成都610031
Author(s):
LIU Yi1CHENG Qiangong2CHEN Mengfa2CHANG Renju2
1.China Railway Eryuan Engineering Group Co. , Ltd. , Chengdu? 610031 ,China;2.Southwest Jiaotong University ,Chengdu? 610031 ,China
关键词:
红层软岩离心模型试验应力状态位移变形
Keywords:
soft rock in red bedcentrifugal model teststate of stressdisplacement deformation
分类号:
U416.1+3
DOI:
10.12098/j.issn.1674-8247.2023.02.014
文献标志码:
A
摘要:
本文以成自铁路球溪站深路堑工点为研究对象,开展了外业调查、资料整理和模型选取,通过离心机模型试验分析开挖深路堑前后应力场和位移变化规律,探究路堑坡体开挖后基底不同深度水平应力与竖向应力变化的特征、相对大小关系及变形情况,结果表明:(1)深路堑坡体开挖后,基底埋深一定深度范围内,水平应力调整为大于竖向应力,基底中部上拱变形量最大;(2)水平应力与竖向应力的大小关系是导致深路堑基底产生上拱变形的关键因素。
Abstract:
Based on a case study of the deep cutting made on the construction site of Qiuxi Station of the Chengdu-Zigong Railway by field investigation,data sorting,and model selection,the change rules of stress field and displacement before and after excavation of deep cutting were analyzed in this paper by centrifuge model test,and the change characteristics,relative magnitude relationship of horizontal and vertical stress at different depths of the base after excavation of cutting slope and the deformation of the base were explored. The results show that:(1)After the excavation of the deep cutting slope,the horizontal stress is adjusted to be greater than the vertical stress within a certain depth of the base,and the upheaval deformation in the middle of the base is the largest.(2)The relationship between horizontal and vertical stress is the key factor leading to upheaval deformation of the deep cutting base.

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备注/Memo

备注/Memo:
收稿日期:2022-12-01
作者简介:刘毅(1978-),男,高级工程师。
更新日期/Last Update: 2023-04-30