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| Numerical Simulation of on Mechanical Properties of New Precast Inverted Arch Joint in Highway Tunnel |
| ZHANG Ya-peng1, QU Long1, LIU Jing-tang2, YUAN Wen-guang1, HAO Ying3 |
1. Gansu Provincial Highway Aviation Tourism Tian-Zhuang Expressway Management Co., Ltd., Tianshui 741001, Gansu, China;
2. Gansu Province Transportation Planning Survey & Design Institute Co., Ltd., Lanzhou Gansu 730030, China;
3. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221116, China |
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Abstract In order to improve the engineering quality of highway tunnel, accelerate the construction speed, reduce the material consumption and construction cost, and improve the construction environment, this study proposed an optimized precast inverted arch form. ABAQUS was used to establish the three-dimensional finite element model of the precast inverted arch reinforced concrete structure. Considering the influence of different strength grades of bolts, bolt preload, bearing load and steel bars, the mechanical properties of the optimized precast inverted arch structure joints of highway tunnel were analyzed. The results show that the bolt prestress can effectively increase the capacity of the joint to bear positive bending moment. Under large load, the higher the bolt grade, the greater the maximum stress and the smaller the maximum strain; under this precast inverted arch structure, the vulnerable parts of the lower bolt are the connection between the screw and the nut, the vulnerable parts of the upper bolt are the screw, and the vulnerable parts of the concrete joint are the joint and the structural corner. The results have guiding significance for ensuring the safe construction of new prefabricated inverted arch of highway tunnel.
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Received: 26 January 2021
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| Fund:Key Research and Development Project of Gansu Province (No. 21YF1GA381); Science and Technology Project of Gansu Provincial Department of Transportation (No. 2021-09) |
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[1] QI Wen-rui, GAO Yong-tao, Study on Comprehensive Construction and Monitoring Technology of Highway Tunnel Crossing Weak and Fractured Surrounding Rock[J]. Journal of Highway and Transportation Research and Development, 2021, 38(11):88-96, 105. (in Chinese)
[2] LI Peng-tao. Research of Internal Force Models of Lining Segment of TBM Tunnel[D]. Yangling:Northwest A&F University, 2009. (in Chinese)
[3] LI Xian-jin, LIN Chun-gang, LI Jing. New Construction Method for Secondary Lining of Railway Tunnel and Design of Lining Trolley Scheme[J]. Tunnel Construction, 2021, 41(2):293-299. (in Chinese)
[4] DI Chen. Study on Cracking Mechanism and Control Measures of the Secondary Lining of Linpanshan Tunnel[D]. Xi'an:Xi'an University of Architecture and Technology, 2021. (in Chinese)
[5] ZHOU Xiao-song. Techno-economic Comparative Analysis of TBM Method and Drilling and Blasting Method[D]. Xi'an:Xi'an University of Technology, 2010. (in Chinese)
[6] KARIMI M, CHAKERI H, NAMIN F S, et al. Numerical Investigation Intothe Effect of Stepping on the Circumferential Joint in the Precast Tunnel Segments under TBM Thrust Jacks[J]. Arabian Journal of Geosciences, 2020, 13(15):754-763.
[7] WU Feng-hao. Research on Seismic Performance of Fully Prefabricated Subway Station Structure Based on Mortise and Groove Grouting Joint[D]. Beijing:Beijing Jiaotong University, 2019. (in Chinese)
[8] XU Wei-hua. Study on Mechanical Properties of Lining Segment's Joint in Shield Tunnel[D]. Shenyang:Shenyang Jianzhu University, 2015. (in Chinese)
[9] Yang Xiu-ren, Huang Mei-qun. Research Strategies on New Prefabricated Technology of Underground Subway Station[J]. Urban Rapid Rail Transit, 2018, 31(1):78- 85. (in Chinese)
[10] WANG Zhi-wei, MA Wei-bin, ZHENG Qing. Stress Analysis of Prefabricated Box Culvert Structure under Shield Tunnel of Urban High Speed Railway[J]. Railway Engineering, 2019, 59(9):61-64. (in Chinese)
[11] LIU Pei-shuo. The Study of Inverted Arch Precasting Technology for Qingling Ultra-long Railway Tunnel under the TBM Construction Conditions[D]. Chengdu:Southwest Jiaotong University, 2002. (in Chinese)
[12] YAO Yi-wen, JIANG Li-hua, FAN Yi-qun. Overview of Prefabricated Assembly Technology of Underground Space Structure[J]. Urban Roads Bridges & Flood Control, 2012(9):286-292. (in Chinese)
[13] CHEN Jing-jun. Study on the Mechanical Characteristic of the Fabricate Railway Tunnel Lining Constructure with Mining Method[D]. Chengdu:Southwest Jiaotong University, 2005. (in Chinese)
[14] JTG 3370. 1-2018, Specifications for Design of Highway Tunnels[S]. (in Chinese)
[15] LIU Hong-qing, LIU Hua-bei. Numerical Investigation on the Mechanical Behaviour of Shield Tunnel Segment and Their Longitudinal Joint[J]. Chinese Journal of Underground Space and Engineering, 2019, 15(6):1800-1810, 1873. (in Chinese)
[16] GENIKOMSOU A S, POLAK M A. Finite Element Analysis of Punching Shear of Concrete Slabs Using Damaged Plasticity Model in ABAQUS[J]. Engineering Structures, 2015, 98:38-48.
[17] NANA W S A, BUI T T, LIMAM A, et al. Experimental and Numerical Modelling of Shear Behaviour of Full-scale RC Slabs under Concentrated Loads[J]. Structures, 2017, 10:96-116.
[18] ZHANG Wen-jun, ZHANG Xin-xin, ZHANG Yun-pei. Influence of lnclined Bolt Grade on Bearing Capacity and Deformation of Shield Tunnel Joint[J]. Chinese Journal of Underground Space and Engineering, 2018, 14(S1):227-234. (in Chinese)
[19] GB/T 3098. 1-2010, Mechanical Properties of Fasteners:Bolts, Screws and Studs[S]. (in Chinese)
[20] GB50017-2003, Code for Design of Steel Structures[S]. (in Chinese)
[21] LIN Wen-yu. Finite Element Analysis for Mechanical Property of High-strength Bolt Connection in High Temperature[D]. Wuhan:Wuhan University of Technology, 2006. (in Chinese) |
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2023, Vol. 17 
