Thermal characteristics of a lining of a large diameter shield tunnel under hydrocarbon curve
YAN Zhiguo1,2, WANG Zirui1, SHEN Yi1,2*, LIU Kang1
1. Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China; 2. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
Abstract: Based on a large-diameter tunnel in Jinan, a full-scale numerical analyze model was performed to analyze the temperature field distribution, structural deformation and internal force distribution of the shield tunnel in fire. A thermal-mechanical coupling analysis method for shield tunnel lining structures was proposed. The results showed that the temperature of the inner heating surface area was significantly higher than the outer surface during fire, 300 mm part of the lining from the inner heating surface was not affected by fire; The lining expanded due to the heating in fire; The deformation of the vault and the bottom gradually decreased, the horizontal deformation of the arch waist continued to increase, some segment joints were significantly opened under the effect of fire. The stress of lining entered the yield state from the heating surface, while stress redistribution developed and connection bolts partially yield; The axial force of overall structure decreased and the bending moment increased dramatically, the bending moment of the arch waist even doubled compared with before.
闫治国, 王紫锐, 沈奕, 刘康. 碳氢曲线下大直径盾构隧道结构热力特性[J]. 隧道与地下工程灾害防治, 2024, 6(2): 25-36.
YAN Zhiguo, WANG Zirui, SHEN Yi, LIU Kang. Thermal characteristics of a lining of a large diameter shield tunnel under hydrocarbon curve. Hazard Control in Tunnelling and Underground Engineering, 2024, 6(2): 25-36.
[1] 彭立敏,刘小兵,杜思村. 不同燃烧温度量级对隧道衬砌强度损伤程度的试验研究[J]. 铁道学报,1997,19(5): 88-95. PENG Limin, LIU Xiaobing, DU Sicun. Experimental study on damage degree of tunnel lining strength by different combustion temperature orders[J]. Journal of the China Railway Society, 1997, 19(5): 88-95. [2] LUCCIONI B M, FIGUEROA M I, DANESI R F. Thermo-mechanic model for concrete exposed to elevated temperatures[J]. Engineering Structures, 2003, 25(6): 729-742. [3] YASUDA F, ONO K, OTSUKA T. Fire protection for TBM shield tunnel lining[J]. Tunneling and Underground Space Technology, 2004,19(4/5):317. [4] MAJORANA C E, PESAVENTO F, BRUNELLO P. Computational analysis of thermo-chemical and mechanical behaviour of tunnels during fire[J].Structures and Materials, 2003, 12: 365-375. [5] 崔军, 邵宏, 李刚. 隧道火灾后衬砌混凝土受损分析[J]. 中国市政工程, 2006(6): 64-65. CUI Jun, SHAO Hong, LI Gang. On damaged lining concrete after tunnel fire[J]. China Municipal Engineering, 2006(6): 64-65. [6] 闫治国. 隧道衬砌结构火灾高温力学行为及耐火方法研究[D]. 上海: 同济大学, 2007. YAN Zhiguo. A study on mechanical behaviors and fireproof methods of tunnel lining structure during and after fire scenarios[D].Shanghai: Tongji University, 2007. [7] 闫治国, 朱合华, 梁利. 火灾高温下隧道衬砌管片力学性能试验[J]. 同济大学学报(自然科学版), 2012, 40(6): 823-828. YAN Zhiguo, ZHU Hehua, LIANG Li. Experimental study on mechanical performance of lining segments in fire accidents[J]. Journal of Tongji University(Natural Science), 2012, 40(6): 823-828. [8] 过镇海,时旭东. 钢筋混凝土的高温性能试验及其计算[M].北京:清华大学出版社. [9] 高润东, 李向民, 许清风, 等. 遭受高温混凝土中性化机理试验研究[J]. 建筑结构, 2014, 44(9): 72-74. GAO Rundong, LI Xiangmin, XU Qingfeng, et al. Experimental research on neutralization mechanisms of concrete suffered from high temperature[J]. Building Structure, 2014, 44(9): 72-74. [10] 翟子泰, 王强, 朱凯, 等. 隧道火灾后衬砌混凝土抗压强度的超声检测[J]. 消防科学与技术, 2019, 38(2): 229-233. ZHAI Zitai, WANG Qiang, ZHU Kai, et al. Ultrasonic test of compressive strength of concrete lining after tunnel fire[J]. Fire Science and Technology, 2019, 38(2): 229-233. [11] 陈春红, 朱平华, 陈世洲. 隧道火灾下气凝胶复合混凝土强度经时变化[J]. 常州大学学报(自然科学版), 2020, 32(3): 86-92. CHEN Chunhong, ZHU Pinghua, CHEN Shizhou. Study on strength variation of aerogel composite concrete exposed to tunnel fire[J]. Journal of Changzhou University(Natural Science Edition), 2020, 32(3): 86-92. [12] 李忠友, 刘元雪, 姚志华, 等. 火灾作用下隧道结构力学响应及稳定性分析[J]. 防灾减灾工程学报, 2021, 41(1): 159-166. LI Zhongyou, LIU Yuanxue, YAO Zhihua, et al. Stability assessment and mechanics response of tunnels subjected to fire load[J]. Journal of Disaster Prevention and Mitigation Engineering, 2021, 41(1): 159-166. [13] 李鹏, 宋文超, 罗亦洲. 不同燃烧物及防护下隧道火灾特征调查与分析[J]. 四川建筑, 2022, 42(2): 349-352. LI Peng, SONG Wenchao, LUO Yizhou. Investigation and analysis of tunnel fire characteristics under different combustibles and protection[J]. Sichuan Architecture, 2022, 42(2): 349-352. [14] PARK S H, OH H H, SHIN Y S, et al. A case study on the fire damage of the underground box structures and its repair works[J]. Tunnelling and Underground Space Technology, 2006, 21(3/4): 328. [15] 闫治国, 朱合华, 张建军. 火灾对隧道衬砌结构的损害及防范措施研究[J]. 地下空间与工程学报, 2006, 2(4): 683-687. YAN Zhiguo, ZHU Hehua, ZHANG Jianjun. A study on fire damage to tunnel lining and fire- control measures[J]. Chinese Journal of Underground Space and Engineering, 2006, 2(4): 683-687. [16] 闫治国, 朱合华. 隧道衬砌结构火灾安全及高温力学行为研究[J]. 地下空间与工程学报, 2010, 6(4): 695-700. YAN Zhiguo, ZHU Hehua. Study on fire safety and mechanical behaviors of tunnel lining under high temperature[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(4): 695-700. [17] 朱合华, 沈奕, 闫治国. 火灾下大直径盾构隧道结构力学特性有限元分析[J]. 地下空间与工程学报, 2012, 8(增刊1): 1609-1614. ZHU Hehua, SHEN Yi, YAN Zhiguo. Finite element analysis of structural mechanical characteristics of large diameter shield tunnel under fire[J]. Chinese Journal of Underground Space and Engineering, 2012, 8(Suppl.1): 1609-1614. [18] 沈奕. 火灾下隧道结构温度特性及力学行为分析[J]. 现代隧道技术, 2016, 53(6): 80-88. SHEN Yi. Analysis of the temperature characteristics and mechanical behaviors of tunnel structures in fires[J]. Modern Tunnelling Technology, 2016, 53(6): 80-88. [19] 习阳. 钢壳混凝土组合结构火灾高温力学行为研究[D]. 重庆: 重庆交通大学, 2021. XI Yang. Mechanical behavior ofa composite structure with steel-shell and concrete under high temperature of fire[D].Chongqing: Chongqing Jiaotong University, 2021. [20] 王明年,胡萧越,唐雄俊,等.大直径盾构铁路隧道火灾温度荷载及结构内力特性研究[J].现代隧道技术,2021,58(1):1-9. WANG Mingnian, HU Xiaoyue, TANG Xiongjun, et al. Study on temperature loads and structural internal force characteristics of large-diameter shield-driven railway tunnels in a fire scenario[J]. Modern Tunnelling Technology, 2021, 58(1): 1-9. [21] European Committee for Standardization. Design of concrete structures: part 1-2: general rules: structural fire design:EN 1992-1-2[S]. London, Britain: British Standards Institution, 2004. [22] 潘东. 火灾作用下大直径盾构隧道衬砌力学性能和损伤规律研究[D]. 北京: 北京交通大学, 2018. PAN Dong. Study on mechanical properties and damage laws of large diameter shield tunnel lining under fire scenario[D]. Beijing: Beijing Jiaotong University, 2018.
2024, Vol. 6 
