[1]蒋梦新,邱枫博,刘久明,等.强震区隧道洞口段刚柔并济抗震技术研究[J].高速铁路技术,2021,12(04):16-20.[doi:10.12098/j.issn.1674-8247.2021.04.004]
　JIANG Mengxin,QIU Fengbo,LIU Jiuming,et al.Study on Rigid and Flexible Anti-seismic Technology for Tunnel Portal Sections in Meizoseismal Areas[J].HIGH SPEED RAILWAY TECHNOLOGY,2021,12(04):16-20.[doi:10.12098/j.issn.1674-8247.2021.04.004]
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强震区隧道洞口段刚柔并济抗震技术研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
12卷
期数:
2021年04期
页码:
16-20
栏目:
出版日期:
2021-08-28

文章信息/Info

Title:
Study on Rigid and Flexible Anti-seismic Technology for Tunnel Portal Sections in Meizoseismal Areas
文章编号:
1674—8247(2021)04—0016-05
作者:
蒋梦新;  邱枫博;  刘久明;  崔光耀
北方工业大学, 北京 100144
Author(s):
JIANG Mengxin;  QIU Fengbo;  LIU Jiuming;  CUI Guangyao
North China University of Technology, Beijing 100144, China
关键词:
隧道工程|强震区|洞口段|刚柔并济|抗震技术
Keywords:
tunnel engineering|meizoseismal area|portal section|rigid and flexible|anti-seismic technology
分类号:
U452.2+8
DOI:
10.12098/j.issn.1674-8247.2021.04.004
文献标志码:
A
摘要:
为进一步提高强震区隧道洞口段衬砌结构的安全性，本文以樊家寨隧道芒市进口段为依托，利用有限元软件ABAQUS对强震区隧道洞口段采用"SFRC二衬+减震层"的刚柔并济抗震技术进行研究。结果表明：与仅采用素混凝土作为二衬结构材料相比，采用刚柔并济抗震技术后，二衬结构最大主应力极值减小了20.96%，最小主应力极值减小了12.42%，剪应力极值减小了11.82%，合位移极值减小了44.25%，最小安全系数提高范围38.15%~192.86%。研究结果可为强震区隧道洞口段的工程设计提供参考。
Abstract:
In order to further improve the safety of the lining structure at the tunnel portal in meizoseismal areas, this paper studies the rigid and flexible anti-seismic technology of "secondary lining of SFRC + shock-absorbing layer" for tunnel portals in meizoseismal areas with finite element software ABAQUS based on a case study of the portal section of Fanjiazhai Tunnel in Mangshi. The results show that compared with the practice of using only plain concrete as the secondary lining, the extreme values of maximum principal stress, the minimum principal stress, the shear stress, and the resultant displacement of the secondary lining structure are reduced by 20.96%, 12.42%, 11.82%, and 44.25% respectively, and the minimum safety coefficient rises by 38.15% to 192.86% after using the rigid and flexible anti-seismic technology. The results can provide a reference for the engineering design of tunnel portal sections in meizoseismal areas.

备注/Memo

备注/Memo:
作者简介:蒋梦新(1997-),男,在读研究生。基金项目:国家自然科学基金项目（52178378）；北京市大学生科学研究与创业行动计划项目（21XN216/006）引文格式:蒋梦新, 邱枫博, 刘久明, 等. 强震区隧道洞口段刚柔并济抗震技术研究[J]. 高速铁路技术,2021,12(4):16-20.JIANG Mengxin, QIU Fengbo, LIU Jiuming, et al. Study on Rigid and Flexible Anti-seismic Technology for Tunnel Portal Sections in Meizoseismal Areas[J]. High Speed Railway Technology, 2021, 12(4):16-20.
更新日期/Last Update: 2021-08-28