[1]麻建飞,郭艳军,崔光耀.强震区隧道软硬围岩交接段纤维混凝土衬砌抗震性能研究[J].高速铁路技术,2020,11(05):46-50.[doi:10.12098/j.issn.1674-8247.2020.05.009]
　MA Jianfei,GUO Yanjun,CUI Guangyao.Seismic Performance of Fiber Concrete Lining at Soft and Hard Surrounding Rock Junction of Tunnel in Highly Seismic Area[J].HIGH SPEED RAILWAY TECHNOLOGY,2020,11(05):46-50.[doi:10.12098/j.issn.1674-8247.2020.05.009]
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强震区隧道软硬围岩交接段纤维混凝土衬砌抗震性能研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
11卷
期数:
2020年05期
页码:
46-50
栏目:
出版日期:
2020-10-28

文章信息/Info

Title:
Seismic Performance of Fiber Concrete Lining at Soft and Hard Surrounding Rock Junction of Tunnel in Highly Seismic Area
文章编号:
1674—8247(2020)05—0046-05
作者:
麻建飞;  郭艳军;  崔光耀
1. 北方工业大学, 北京 100144;
2. 四川电力设计咨询有限责任公司, 成都 610041
Author(s):
MA Jianfei;  GUO Yanjun;  CUI Guangyao
1. North China University of Technology, Beijing 100144, China;
2. Sichuan Electric Power Design & Consulting Co., Ltd., Chengdu 610041, China
关键词:
隧道工程|强震区|软硬围岩交接段|纤维混凝土|抗震性能
Keywords:
tunnel construction|highly seismic area|soft and hard surrounding rock junction|fiber concrete|seismic performance
分类号:
U452.2+8
DOI:
10.12098/j.issn.1674-8247.2020.05.009
文献标志码:
A
摘要:
为提高西部艰险山区隧道软硬围岩交接段的抗震性能，本文依托某铁路隧道软硬围岩交接段，利用有限差分软件对隧道软硬围岩交接段纤维混凝土衬砌的地震响应规律进行了研究，结果表明：（1）在同纤维体积掺量的条件下，隧道软硬围岩交接段衬砌采用钢纤维混凝土的横向位移、竖向位移的抗震效果分别为2.50%~5.00%和0.32%~0.55%，边墙收敛抗震效果为1.74%~6.57%，最小安全系数抗震效果为5.84%~41.30%；（2）隧道软硬围岩交接段衬砌采用钢-玄武岩混杂纤维混凝土的横、竖向位移的抗震效果分别为0.32%~0.55%和0.14%~0.94%，边墙收敛抗震效果为0.44%~70.04%，最小安全系数抗震效果为12.68%~45.81%。（3）同纤维体积掺量条件下，隧道软硬围岩交接段衬砌采用钢-玄武岩混杂纤维混凝土的抗震效果优于钢纤维混凝土衬砌的抗震效果。研究成果可为高烈度艰险山区隧道的抗震设防设计提供参考。
Abstract:
In order to improve the seismic performance of tunnels at soft and hard surrounding rock junctions in western dangerous mountainous areas, based on a railway tunnel at the soft and hard surrounding rock junction, the seismic response rules of fiber concrete lining at the soft and hard surrounding rock junction of the tunnel are researched by using the finite difference software. The results show that:(1) Under the condition of the same fiber volume content, the seismic effect in lateral displacement and vertical displacement of steel fiber reinforced concrete lining at the soft and hard surrounding rock junction of the tunnel is 2.50%~5.00% and 0.32%~0.55% respectively, the side wall convergence seismic effect is 1.74%~6.57%, and the minimum safety factor seismic effect is 5.84%~41.30%. (2) The seismic effect in lateral displacement and vertical displacement of steel-basalt hybrid fiber concrete lining at the soft and hard surrounding rock junction of the tunnel is 0.32%~0.55% and 0.14%~0.94% respectively, the side wall convergence seismic effect is 0.44%~70.04%, and the minimum safety factor seismic effect is 12.68%~45.81%. (3) Under the condition of the same fiber volume content, the seismic effect of steel-basalt hybrid fiber concrete lining at the soft and hard surrounding rock junction of the tunnel is better than that of steel fiber concrete lining. The research results can provide a reference for the seismic fortification design of tunnels in high-intensity dangerous mountainous areas.

备注/Memo

备注/Memo:
作者简介:麻建飞(1997-),男,硕士。基金项目:国家自然科学基金项目（51408008）；北京市青年拔尖人才培育计划项目（CIT&TCD201704013）；北京市属高校基本科研业务费项目（110052971921/061）引文格式:麻建飞, 郭艳军, 崔光耀. 强震区隧道软硬围岩交接段纤维混凝土衬砌抗震性能研究[J]. 高速铁路技术,2020,11(5):46-50.MA Jianfei,GUO Yanjun,CUI Guangyao.Seismic Performance of Fiber Concrete Lining at Soft and Hard Surrounding Rock Junction of Tunnel in Highly Seismic Area[J]. High Speed Railway Technology, 2020, 11(5):46-50.
更新日期/Last Update: 2020-10-28