富水地层公路隧道衬砌背后空洞对结构受力的影响

doi:10.13722/j.cnki.jrme.2015.0732

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Abstract The existence of voids behind highway tunnels in water-rich strata deteriorates the stress state of the lining structure，make it vulnerable to cracking and affects its integrity during service. A device for external loading test was therefore developed with a controllable air pressure between the primary and secondary linings. The voids can be simulated by regulating the pressure difference，equivalent water pressure in the voids. Using this device together with a tunnel-ground simulation facility，a model test with a geometric similarity ratio of 1:30 was conducted. The force distribution and cracking features on the secondary lining with respect to different external water pressures and void distribution were analyzed. The axial force and bending moment distribution on the secondary lining were found no longer be symmetrical due to the voids. The voids at different location impacted differently to the mechanical behavior of lining，especially at locations near the voids. In the area close to the voids，the axial force and bending moment increased at a rate significantly higher than in other parts of lining. As the external water pressure increased，a nearly linear increasing trend of axial force and bending moment was observed irrespective of the void locations. The eccentricity decreased as the water pressure rose，and it tended to remain constant once the water pressure reached 150 kPa. Given the same pressure level，the axial force and the bending moment in tunnels with widening band were significantly greater than that in three-lane tunnels，though the distribution was similar. In the cases where the vertical stress field dominated，the voids behind the left wall had the most significant effect on the bearing capacity of lining，followed by voids behind the crown and invert. Both the number and severity of cracks on the lining with voids presented nearby exceeded the other parts noticeably.

Key words： tunneling engineering voids behind the lining external water pressure secondary lining mechanical behavior crack feature model test

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	Articles by authors
	FANG Yong1
	GUO Jianning1
	KANG Haibo2
	XU Chen1

Cite this article:

FANG Yong1,GUO Jianning1,KANG Haibo2, et al. Influence of voids behind lining on the mechanical behavior of lining structure of highway tunnel in watery strata[J]. , 2016, 35(8): 1648-1658.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0732 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I8/1648

[1] 周强. 高速公路隧道衬砌背后空洞影响及安全性分析[硕士学位论文][D]. 重庆：重庆交通大学，2013.(ZHOU Qiang. Effects and safety analysis of caverns behind highway tunnel lining[M. S. Thesis[D]. Chongqing：Chongqing Jiaotong University，2013.(in Chinese))
[2] 张顶立，张素磊，房倩，等. 铁路运营隧道衬砌背后接触状态及其分析[J]. 岩石力学与工程学报，2013，32(2)：217–224.(ZHANG Dingli，ZHANG Sulei，FANG Qian，et al. Study of contact state behind tunnel lining in process of railway operation and its analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(2)：217–224.(in Chinese))
[3] 曲荣怀. 衬砌背后空洞对隧道围岩压力分布规律的影响研究[硕士学位论文][D]. 北京：北京交通大学，2014.(QU Ronghuai. Study on the influence laws of voids behind lining on the distribution of tunnel surrounding rock pressure[M. S. Thesis][D]. Beijing：Beijing Jiaotong University，2014.(in Chinese))
[4] WANG J F，HUANG H W，XIE X Y，et al. Void-induced liner deformation and stress redistribution[J]. Tunnelling and Underground Space Technology ，2014，40(12)：263–276.
[5] 佘健，何川，汪波，等. 衬砌背后空洞对隧道结构承载力影响的模型试验研究[J]. 公路交通科技，2008，25(1)：104–110.(SHE Jian，HE Chuan，WANG Bo，et al. Study on effect of cavities behind linings on bearing capacity of tunnel structure by model test[J]. Journal of Highway and Transportation Research and Development，2008，25(1)：104–110.(in Chinese))
[6] MEGUID M A，DANG H K. The effect of erosion voids on existing tunnel linings[J]. Tunnelling and Underground Space Technology，2009，24(10)：278–286.
[7] 张成平，冯岗，张旭，等. 衬砌背后双空洞影响下隧道结构的安全状态分析[J]. 岩土工程学报，2015，37(3)：487–493.(ZHANG Chengping，FENG Gang，ZHANG Xu，et al. The effect of double voids behind the lining on safety state of tunnel structure[J]. Chinese Journal of Geotechnical Engineering，2015，37(3)：487–493.(in Chinese))
[8] 宋瑞刚，张顶立. “接触问题”引起的隧道病害分析[J]. 中国地质灾害与防治学报，2004，15(4)：72–75.(SONG Ruigang，ZHANG Dingli. Analysis on cause of fracturing failure of tunnel lining[J]. The Chinese Journal of Geological Hazard and Control，2004，15(4)：72–75.(in Chinese))
[9] GAO Y，JIANG Y J，LI B. Estimation of effect of voids on frequency response of mountain tunnel lining based on microtremor method[J]. Tunnelling and Underground Space Technology，2014，42(3)：184–194.
[10] 吴梦军，许锡宾，赵明阶，等. 岩溶地区公路隧道施工力学响应研究[J]. 岩石力学与工程学报，2004，23(9)：1 525–1 529.(WU Mengjun，XU Xibin，ZHAO Mingjie，et al. Construction mechanics response study of highway tunnel in karst[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(9)：1 525–1 529.(in Chinese))
[11] 杨俊杰. 相似理论与结构模型试验[M]. 武汉：武汉理工大学出版社，2005：5–11.(YANG Junjie. Similarity theory and structure model test[M]. Wuhan：Wuhan University of Technology Press，2005：5–11.(in Chinese))
[12] 何川，封坤，杨雄. 南京长江隧道超大断面管片衬砌结构体的相似模型试验研究[J]. 岩石力学与工程学报，2007，26(11)：2 260–2 269.(HE Chuan，FENG Kun，YANG Xiong. Model test on segmental lining of Nanjing Yangtze River tunnel with super-large cross section[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(11)：2 260–2 269.(in Chinese))
[13] 何川，张建刚，杨征. 武汉长江隧道管片衬砌结构力学特征模型试验研究[J]. 土木工程学报，2008，41(12)：85–90.(HE Chuan，ZHANG Jiangang，YANG Zheng. Model test study on the mechanical characteristics of segment lining for the Wuhan Yangtze River tunnel[J]. China Civil Engineering Journal，2008，41(12)：85–90.(in Chinese))
[14] 张志强，何本国，马腾飞. 水压条件下矿山法隧道主体结构的受力特征[J].西南交通大学学报，2012，47(6)：935–941.(ZHANG Zhiqiang，HE Benguo，MA Tengfei. Mechanical characteristics of main structure of mining tunnel under water pressure[J]. Journal of Southwest Jiaotong University，2012，47(6)：935–941.(in Chinese))
[15] 崔戈，徐晨，郭建宁，等. 一种用于隧道结构模型试验的均匀水压模拟加载装置[P]. 中国：CN 204101382 U，2014–08–25.(CUI Ge，XU Chen，GUO Jianning，et al. A homogeneous hydraulic simulation loading device for the tunnel structure model test[P]. China：CN 204101382 U，2014–08–25.(in Chinese)）
[16] 聂子云. 隧道衬砌背后空洞对结构安全影响及防治技术研究[硕士学位论文][D]. 长沙：中南大学，2013.(NEI Ziyun. Study on the failure mechanism and control techniques of the voids behind tunnel lining[M. S. Thesis][D]. Changsha：Central South Univercity，2013.(in Chinese))
[17] 崔文艳，宋建，刘宇，等. 不同位置空洞对隧道衬砌的力学行为分析[J]. 水利与建筑工程学报，2011，9(5)：70–73.(CUI Wenyan，SONG Jian，LIU Yu，et al. Analysis for mechanical properties of empty holes in different positions on tunnel lining[J]. Journal of Water Resources and Architectural Engineering，2011，9(5)：70–73.(in Chinese))