[1]杨腾添.运营期隧道衬砌非对称式破坏成因分析及数值模拟研究[J].西安建筑科技大学学报(自然科学版),2021,53(04):525-533.[doi:10.15986/j.1006-7930.2021.04.009]
　YANG Tengtian.Cause analysis and numerical simulation of asymmetric damage of operating tunnel lining[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(04):525-533.[doi:10.15986/j.1006-7930.2021.04.009]
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运营期隧道衬砌非对称式破坏成因分析及数值模拟研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年04期
页码:
525-533
栏目:
出版日期:
2021-08-28

文章信息/Info

Title:
Cause analysis and numerical simulation of asymmetric damage of operating tunnel lining
文章编号:
1006-7930(2021)04-0525-09
作者:
杨腾添1; 2; 3
(1.中国铁建大桥工程局集团有限公司 天津 300300; 2.陕西省岩土与地下空间工程重点实验室 陕西 西安 710055; 3.西安建筑科技大学 土木工程学院 陕西 西安 710055)
Author(s):
YANG Tengtian1; 2; 3
(1.China Railway Construction Bridge Engineering Bureau Group Co.Ltd.,Tianjin 300300,China; 2.Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering,Xi’an 710055,China; 3.School of Civil Engineering,Xi’an Univ.of Arch.& Tech.,Xi’an 710055,China)
关键词:
运营隧道;  非对称破坏;  衬砌剥落;  溶洞;  数值模拟
Keywords:
operating tunnel;  asymmetric damage;  lining peeling;  Karst cave;  numerical simulation
分类号:
TU45
DOI:
10.15986/j.1006-7930.2021.04.009
文献标志码:
A
摘要:
宜万铁路广成山隧道K180+261～K180+306段边墙衬砌处发生纵向开裂、剥离,翘壳等灾害,隧道衬砌形成了典型的非对称式破坏模式.基于现场系统性的衬砌厚度、衬砌强度及衬砌侵限检测,并结合理论及数值模型分析了衬砌破坏模式及其孕育机制.研究表明,隧道右边墙衬砌厚度不足、病害段衬砌强度偏低以及既有溶洞共同作用导致了病害的发生.临近既有溶洞侧与远离溶洞侧的围岩应力存在明显差异,靠近围岩溶洞侧出现明显的围岩应力集中现象,进而加剧了衬砌的变形破裂.相比二衬厚度不足,既有溶洞是影响隧道应力分布及衬砌剥落的主要因素.研究为类似隧道病害的整治提供理论依据.
Abstract:
Disasters such as longitudinal cracking,lining peeling,and shell warping occurred at the side wall lining of K180+261～K180+306 section of Guangchengshan tunnel on Yiwan railway.The tunnel lining formed a typical asymmetric failure mode.Based on the on-site systematic detection of lining thickness,lining strength and lining invasion limit,the lining failure mode and its incubation mechanism are analyzed with theoretical and numerical models.Results of the study show that the insufficient thickness of lining on the right side of the tunnel,low strength of lining at the diseased section,and adjacent existing Karst cave all contribute to the disease occurrence.There are obvious differences between the stress of surrounding rock near the existing Karst cave and away from the cave,and the stress concentration of surrounding rock near the Karst cave appears obviously,which intensifies the deformation and rupture of the lining.Compared with the insufficient thickness of the secondary lining,the existing cave is the main factor affecting the stress distribution of the tunnel and the lining peeling.Research results can provide a theoretical basis for the treatment of similar tunnel diseases.

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(编辑 桂智刚)

备注/Memo

备注/Memo:
收稿日期:2020-10-20 修改稿日期:2021-07-07
基金项目:陕西省创新能力支撑计划-创新团队基金资助项目(2020TD-005)
第一作者:杨腾添(1989-),男,博士,工程师,主要从事隧道与地下工程建设和科研工作.E-mail:737412033@qq.com
更新日期/Last Update: 2021-08-28