[1]孟令瀚,安栋,荆鸿飞.强震区跨断层隧道纤维混凝土衬砌抗震性能研究[J].高速铁路技术,2018,9(04):14-19.[doi:10.12098/j.issn.1674-8247.2018.04.004]
　MENG Linghan,AN Dong,JING Hongfei.Study on Seismic Performance of Fiber Reinforced Concrete Lining of Fault-crossing Tunnels in Meizoseismal Area[J].HIGH SPEED RAILWAY TECHNOLOGY,2018,9(04):14-19.[doi:10.12098/j.issn.1674-8247.2018.04.004]
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强震区跨断层隧道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:
9卷
期数:
2018年04期
页码:
14-19
栏目:
出版日期:
2018-07-15

文章信息/Info

Title:
Study on Seismic Performance of Fiber Reinforced Concrete Lining of Fault-crossing Tunnels in Meizoseismal Area
文章编号:
1674—8247(2018)04—0014—06
作者:
孟令瀚;  安栋;  荆鸿飞
1. 北方工业大学, 北京 100144;
2. 中铁第五勘察设计院集团有限公司, 北京 102600
Author(s):
MENG Linghan;  AN Dong;  JING Hongfei
1. North China University of Technology, Beijing 100144, China;
2. China Railway Fifth Survey and Design Institute Group, Beijing 102600, China
关键词:
强震区|跨断层隧道|纤维混凝土|抗震性能
Keywords:
meizoseismal area|fault-crossing tunnels|fiber reinforced concrete|seismic performance
分类号:
U452.2+8
DOI:
10.12098/j.issn.1674-8247.2018.04.004
文献标志码:
A
摘要:
为进一步提高高烈度地震区穿断层隧道的震时安全稳定性，文章依托中义隧道万隆断层段，利用有限差分数值计算软件对纤维混凝土隧道衬砌的抗震性能进行研究，对比分析了素混凝土二衬、钢纤维混凝土（SFRC）二衬及钢-玄武岩混杂纤维混凝土（SBHFRC）二衬的结构位移及内力。研究结果表明：（1）SFRC二衬竖向及横向位移分别减小了1.67%、0.68%，SBHFRC二衬竖向及横向位移分别减小了0.97%、0.39%；（2）SFRC二衬与SBHFRC二衬边墙收敛分别减小6.54%、5.14%；（3）SFRC二衬最大、最小主应力分别减小了5.24%、2.86%，SBHFRC二衬最大及最小主应力分别减小了4.73%、1.02%；（4）SFRC二衬与SBHFRC二衬最小剪切应力分别减小2.93%、1.05%；（5）SFRC二衬结构最小安全系数提高达32.99%以上，SBHFRC二衬结构最小安全系数提高达36.08%以上；（6）SBHFRC二衬抗震性能优于SFRC二衬。研究成果可为强震区穿断层隧道抗震技术的发展提供参考。
Abstract:
In order to improve the safety and stability of fault-crossing tunnel in highly seismic areas, based on the Wanlong fault of Zhongyi tunnel, aseismic performance of fiber reinforced concrete tunnel lining is studied in this paper by using finite difference numerical calculation software. The tunnel secondary lining structural displacements and internal forces of plain concrete steel fiber reinforced concrete (SFRC) and steel-basalt hybrid fiber reinforced concrete (SBHFRC) are compared and analyzed. The results show that:(1) the vertical and lateral displacement of SFRC secondary lining are reduced by 1.67% and 0.68%, respectively, the vertical and lateral displacement of SBHFRC secondary lining are reduced by 0.97% and 0.39%, respectively. (2) The side wall convergence of SFRC secondary lining and SBHFRC secondary lining are reduced by 6.54% and 5.14%, respectively. (3) The maximum and minimum principal stress of SFRC secondary lining are reduced by 5.24% and 4.73%, respectively, the maximum and minimum principal stress of SBHFRC secondary lining are reduced by 2.86% and 1.02%, respectively. (4) The maximum shear stress of SFRC secondary lining and SBHFRC secondary lining are reduced by 6.54% and 5.14%, respectively. (5) The minimum factor of safety of the SFRC secondary lining is increased to more than 32.99%, the minimum factor of safety of the SBHFRC secondary lining is increased to more than 36.08%. (6) The aseismic performance of SBHFRC secondary lining is better than that of SFRC secondary lining. The research results can provide reference for anti-seismic fortification design of fault-crossing tunnel in meizoseismal area.

备注/Memo

备注/Memo:
作者简介：孟令瀚(1995-),男,在读硕士研究生。基金项目：国家自然科学基金（51408008、51478277）；北京市青年拔尖人才培育计划（1759-004）；四川省应用基础研究计划项目（2015JY0166）引文格式：孟令瀚, 安栋, 荆鸿飞. 强震区跨断层隧道纤维混凝土衬砌抗震性能研究[J].高速铁路技术,2018,9(4)：14-19.MENG Linghan,AN Dong,JING Hongfei. Study on Seismic Performance of Fiber Reinforced Concrete Lining of Fault-crossing Tunnels in Meizoseismal Area[J]. High Speed Railway Technology,2018,9(4):14-19.
更新日期/Last Update: 2018-08-28