Abstract: Based on statistical analysis of mechanical characteristics of secondary lining for 28 monitoring cross-sections of 13 loess tunnels in the literatures, the population distribution characteristics of the contact pressure between primary support and secondary lining, and their relationship with their classification grade, buried depth and excavation span of tunnels were studied. Through the statistical analysis of in-situ monitoring data of the contact pressure, the variation law with time-change and the spatial distribution law were studied. The research results showed that the contact pressure of the tunnel increased with the increase of the buried depth and the excavation span, and its time history experienced a process of first increasing to the peak value and then decreasing for a period of time, and then continuously increasing and tending to be stable. The contact pressures around the tunnel circumference gradually increased from the crown→the arch shoulder→the arch waist→the arch foot. The research conclusion of this paper has some reference value in analyzing the pressure mechanism of loess tunnels and perfecting the design method of supporting structure.
李鹏飞, 王帆. 黄土隧道复合衬砌间接触压力的统计分析[J]. 隧道与地下工程灾害防治, 2021, 3(2): 16-22.
LI Pengfei, WANG Fan. Statistical analysis of mechanical characteristics of composite lining for loess tunnels. Hazard Control in Tunnelling and Underground Engineering, 2021, 3(2): 16-22.
[1] 房倩,张顶立,王毅远,等. 高速铁路隧道初支、二衬间接触压力研究[J]. 岩石力学与工程学报,2011,30(增刊2): 3377-3385. FANG Qian, ZHANG Dingli, WANG Yiyuan, et al. Study of contact pressure between primary lining and secondary lining for tunnels of passenger dedicated lines[J].Chinese Journal of Rock Mechanics and Engineering, 2011, 30(Suppl.2): 3377-3385. [2] 刘志春,李文江,朱永全,等. 软岩大变形隧道二次衬砌施作时机探讨[J]. 岩石力学与工程学报,2008,27(3):580-588. LIU Zhichun, LI Wenjiang, ZHU Yongquan, et al. Research on construction time of secondary lining in soft rock of large-deformation tunnel[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(3):580-588. [3] 刘国庆. 高地应力软岩大变形隧道二次衬砌施作时机研究[J]. 现代隧道技术,2013,50(2):84-93. LIU Guoqing. On the construction time of a secondary lining for a tunnel with large deformation in soft rock with high ground stress[J]. Modern Tunnelling Technology, 2013, 50(2): 84-93. [4] 赵勇,李国良,喻渝. 黄土隧道工程[M]. 北京:中国铁道出版社,2011. [5] ZHANG D L, FANG Q, LI P F, et al. Structural responses of secondary lining of high-speed railway tunnel excavated in loess ground[J]. Advances in Structural Engineering, 2013, 16(8):1371-1379. [6] 路军富,王明年,贾媛媛,等.高速铁路大断面黄土隧道二次衬砌施作时机研究[J]. 岩土力学,2011,32(3):843-848. LU Junfu, WANG Mingnian, JIA Yuanyuan, et al. Research on construction time of secondary lining of large section loess tunnel for high-speed railway[J]. Rock and Soil Mechanics, 2011, 32(3):843-848. [7] 陈建勋,乔雄. 黄土隧道浅埋偏压洞口段套拱结构受力监测与分析[J]. 建筑科学与工程学报,2011,28(1): 100-105. CHEN Jianxun, QIAO Xiong. Mechanical monitoring and analysis of umbrella arch structure in shallow-buried bias loess tunnel entrance[J]. Journal of Architecture and Civil Engineering, 2011, 28(1):100-105. [8] 李鹏飞,张顶立,赵勇,等.大断面黄土隧道二次衬砌受力特性研究[J].岩石力学与工程学报,2010,29(8): 1690-1696. LI Pengfei, ZHANG Dingli, ZHAO Yong, et al. Study of mechanical characteristics of secondary lining of large-section loess tunnel[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(8): 1690-1696. [9] 张翾. 大断面黄土隧道支护结构力学特性研究[D].北京:北京交通大学,2015. ZHANG Xuan. Study on supporting structures mechanical properties of large sections of loess tunnel[D]. Beijing: Beijing Jiaotong University, 2010. [10] 姜久纯. 黄土隧道施工监控量测及锚杆的支护效果研究[D]. 西安:长安大学,2007. JIANG Jiuchun. Monitoring measurement of loess tunnel and study on the function of rockbolt[D]. Xi'an: Chang'an University, 2007. [11] 乔雄. 黄土隧道洞口段支护结构力学特性研究[D].西安:长安大学,2009. QIAO Xiong. Study on supporting structure mechanical properties of tunnel in loess portal sector[D]. Xi'an: Chang'an University, 2009. [12] 赵占厂.黄土公路隧道结构工程性状研究[D].西安:长安大学,2004. ZHAO Zhanchang. Study on engineering properties of loess highway tunnel structure[D]. Xi'an: Chang'an University, 2004. [13] 周云鹏. 超大断面黄土公路隧道衬砌受力变形特性研究[D].西安:西安科技大学,2014. ZHOU Yunpeng. Study on the mechanical characteristics of the lining for super-large sections of the loess highway tunnel[D]. Xi'an: Xi'an University of Science and Technology, 2014. [14] 许海标,尹俊涛,张晓炜,等. 豫西黄土隧道围岩压力特征研究[J].西南公路,2013(2):263-267. [15] 赖金星,牛方园,樊浩博,等. 浅埋黄土隧道三层支护结构力学特性现场测试[J].岩土力学,2015,36(6):1769-1775. LAI Jinxing, NIU Fangyuan, FAN Haobo, et al. Field test of mechanical characteristics of three-layer support structure of shallow loess tunnel[J]. Rock and Soil Mechanics, 2015, 36(6):1769-1775. [16] 宋玉香,刘勇,齐键旭,等. 铁路隧道复合式衬砌作用效应统计特征分析[J]. 铁道工程学报,2015,32(6):69-75. SONG Yuxiang, LIU Yong, QI Jianxu, et al. Statistical characteristics analysis of structural action effects of the railway tunnel composite lining[J]. Journal of Railway Engineering Society, 2015, 32(6):69-75. [17] 王文森. 变异系数: 一个衡量离散程度简单而有用的统计指标[J].中国统计,2007(6):41-42.
2021, Vol. 3 
