地震作用下隧道衬砌背后空洞影响机制研究

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摘要研究目的：由于隧道衬砌背后空洞的存在对隧道抗震影响很大,本文以高烈度地震区的敦煌-格尔木铁路阔克萨隧道为研究背景,研究隧道衬砌背后空洞位置、空洞大小、围岩级别和隧道埋深等因素对隧道结构的地震动力响应规律及影响机制，并提出合理的加固方案，确保地震作用下隧道运营安全。
研究结论:（1)空洞的存在降低了衬砌结构的变形性能和抗震特性；（2)对空洞隧道拱顶最大主应力影响最敏感的因素是围岩级别，其后依次为空洞环向大小、空洞位置、空洞径向大小和空洞轴向大小，而隧道埋深则是最不敏感的因素；（3)回填注浆加固方案可降低隧道衬砌的拉应力，改善衬砌的内力和应力分布，回填注浆+套拱加固方案要比回填注浆+锚杆方案作用效果好，回填注浆+锚杆+套拱组合加固方案抗震效果最佳;（4)本研究成果对隧道衬砌背后存在空洞时在地震作用下的空洞影响机制和加固方案选取具有一定的指导意义。

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	朱正国
	耿亚帅
	武杰
	朱永全
	王道远
	韩现民

关键词 ：空洞, 隧道衬砌, 地震动力响应, 敏感性分析, 注浆

Abstract：Research purposes ： Cavity behind tunnel lining has great effects on tunnel anti - seismic. Based on the background of the Kuokesa tunnel of Dunhuang to Geermu in high intensity seismic region, this paper studies the effect mechanism on seismic dynamic response of tunnel structure with factors such as the location of cavity behind tunnel lining, cavity size, surrounding rock grade and depth, and proposes the rational reinforcement plans to ensure the operational safety of tunnel under the earthquake action.
Research conclusions: (1) Cavity reduces the defomation perfomance and seismic property of lining structure.
(2) The most sensitive factor is surrounding rock grade, following are cavitys hoop size, location, radial size and axial size, and tunnel depth is the least intensive factor. ( 3 ) The grouting reinforcement scheme can reduce tensile stress, and improve the intenal and stress distribution on tunnel lining. The effect of backfilling grouting + reinforcement with arch surround is better than that of backfilling grouting + bolt, the scheme of backfilling grouting + reinforcement with arch surround + bolt has the best anti - seismic effect. (4) The research results have some guiding significance on effect mechanism and optimized reinforcement project selection of cavity behind tunnel lining under the earthquake action.

Key words： cavity tunnel lining seismic dynamic responss sensitivity analysis grouting reinforcement

收稿日期: 2015-06-12

作者简介: 朱正国，1977年出生，男，教授。

引用本文:

朱正国,耿亚帅,武杰,朱永全,王道远,韩现民. 地震作用下隧道衬砌背后空洞影响机制研究[J]. 铁道工程学报, 2015, 32(9): 79-84.
ZHU Zheng - guo，GENG Ya - shuai, WU Jie, ZHU Yong - quan, WANG Dao - yuan, HAN Xian - min. Research on the Effect Mechanism of Cavity behind Tunnel Lining under the Earthquake Action. Journal of Railway Engineering Society, 2015, 32(9): 79-84.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2015/V32/I9/79

[2]	于媛媛.山岭隧道衬砌结构震害机理研究[D].北京：中国地震局工程力学研究所，2013.
	Jiang Shuping，Fang Lin，Lin Zhi. Seismic Response Analysis of Mountain Tunnels in Different Depths [ J]. Rock and Soil Mechanics，2014(1) ：211 -216,225.
[7]	崔光耀，刘维东，赵瑞华，等.隧道结构地震灾害评价等级及处治技术研究[J].铁道工程学报，2014(5) ：4 - 78,105.
[3]	李斌.隧道掌子面地震动力响应特性及加固方法[J]. 现代隧道技术,2014(2) :56 -62.
[8]	刘敦文，杨光，彭怀德.爆破作用下拱顶衬砌脱空对隧道结构安全的影响分析[].中南大学学报（自然科学版）， 2013(10) ：4214 -4220.
	Zhang Sulei， Zhang Dingli， Liu Shengchun， etc. Discovering the Main Causes of Tunnel Lining Damage Based on Correspondence Analysis Model [ J]. China Railway Science，2012(2) ：54 -58.
[4]	蒋树屏,方林,林志.不同埋置深度的山岭隧道地震响应分析[J].岩土力学,2014(1)211 -216,225.
	Zhu Zhengguo， Yu Jiantao， Sui Chuanyi， etc. Comprehensive Seismic Measures for Tunnel Structure in the Area of High Intensity Active Fault [ J]. China Railway Science,2014(6) ：55 -62.
[1]	张素磊,张顶立,刘胜春，等.基于对应分析模型的隧道衬砌病害主成因挖掘[J].中国铁道科学,2012(2) :54 - 58.
	Li Bin. Characteristics of the Earthquake Dynamic Response and Corresponding Reinforcement of the Tunnel Face[ J]. Modern Tunnelling Technology，2014 (2) ：56-62.
[6]	朱正国，余剑涛，隋传毅，等.高烈度活断层地区隧道结构抗震的综合措施[J].中国铁道科学，2014(6) :55 - 62.
	Liu Dunwen，Yang Guang，Peng Huaide. Analysis for Impact of Structural Safety of Tunnel Induced by Cavity on Vault of Lining under Blasting [ J ]. Journal of Central South University ( Science and Technology)， 2013(10) ：4214 -4220.
	Yuan Song，Wang Zhengzheng，Zhou Jiamei. Study on the Model Boundary Determination in Tunnel ’ s Earthquake Dynamic Analysis [ J ] . China Civil Engineering Journal,2012 (11) ：166 -172.
	Yu Yuanyuan. Seismic Damage Mechanism of Secondary Lining of Mountain Tunnel [ D ]. Beijing ： Institute of Engineering Mechanics， China Earthquake Administration ,2013.
[5]	袁松，王峥峥，周佳媚.隧道地震动力计算边界取值范围研究[J]. 土木工程学报，2012(11) :166 -172.
	Cui Guangyao， Liu Weidong， Zhao Ruiliua， etc. Research on the Evaluation Grade of Seismic Damage and Disposal Technologies of Tunnel Structure [ J ]. Journal of Railway Engineering Society，2014 (5) ： 74 - 78，105.