Numerical analysis of corrugated steel reinforced shield tunnel under complex stress path
WEI Gang1,2, XU Tianbao3, ZHANG Zhiguo4
1. Department of Civil Engineering, Hangzhou City University, Hangzhou 310015, Zhejiang, China; 2. Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, Zhejiang, China; 3. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China; 4. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
Abstract In order to probe into the similarities and differences of the stress-deformation law and the reinforcement effect of shield tunnel strengthened with corrugated steel under complex stress paths, a refined model of three-ring staggered joints was established based on the finite element software MIDAS GTS NX, the effect of corrugated steel reinforcement was evaluated from the angle of convergent deformation, corrugated steel stress and plastic deformation of segments before and after reinforcement, the stress and deformation evolution of shield tunnel strengthened with corrugated steel under loading and unloading conditions were analyzed. The results showed that the distribution of the maximum convergent deformation was different in the complex loading environment. The waist was the main part of the loading, and the top and bottom was the main part of the unloading under unloading, the effect of corrugated steel reinforcement was better than that under surcharge loading, and the maximum reinforcement efficiency could reach 70%, the convergent deformation and the stress development of corrugated steel with different plate thicknesses were similar and showed a linear increasing trend, while corrugated steel could effectively delay the plastic development of concrete, however, the ability of stagger suppression between rings under unloading condition was weak.
冯爱军. 中国城市轨道交通2021年数据统计与发展分析[J]. 隧道建设(中英文), 2022, 42(2): 336-341. FENG Aijun. Data statistics and development analysis of urban rail transit in China in 2021[J]. Tunnel Construction, 2022, 42(2): 336-341.
[2]
向青青,魏纲,周鑫鑫. 整环盾构隧道管片原型加载系统的研究综述[J]. 低温建筑技术, 2020, 42(4): 81-86. XIANG Qingqing, WEI Gang, ZHOU Xinxin. Research on prototype loading system for segment of integral ring shield tunnel: a review[J]. Low Temperature Architecture Technology, 2020, 42(4): 81-86.
[3]
柳献,张浩立,唐敏,等. 内张钢圈加固盾构隧道结构承载能力的试验研究:半环加固法[J]. 现代隧道技术, 2014, 51(3): 131-137. LIU Xian, ZHANG Haoli, TANG Min, et al. Experimental study of the ultimate bearing capacity of a shield tunnel reinforced by a semi-ring steel plate[J]. Modern Tunnelling Technology, 2014, 51(3): 131-137.
[4]
柳献,张乐乐,李刚, 等. 复合腔体加固盾构隧道结构承载能力的试验研究[J]. 城市轨道交通研究, 2015, 18(7): 52-57. LIU Xian, ZHANG Lele, LI Gang, et al. Experimental study on the ultimate bearing capacity of shield tunnel composite cavity reinforcement[J]. Urban Mass Transit, 2015, 18(7): 52-57.
[5]
马庆雷. 超高性能混凝土(UHPC)加固盾构隧道管片力学性能研究[D]. 长沙: 湖南大学, 2021. MA Qinglei. Study on mechanical properties of shield tunnel segment strengthened with ultra-high performance concrete(UHPC)[D]. Changsha: Hunan University, 2021.
[6]
臧建波. 盾构隧道管片纵缝接头的加固试验与分析[D]. 广州: 华南理工大学, 2016. ZANG Jianbo. Test and analysis on reinforcement of longitudinal joint of segment in shield tunnel[D]. Guangzhou: South China University of Technology, 2016.
[7]
陈仁朋,鲁立,张阳,等. 盾构管片UHPC加固技术及力学性能分析[J].工程力学, 2019, 36(11): 41-49. CHEN Renpeng, LU Li, ZHANG Yang, et al. Reinforced technology and mechanical properties of shield tunnel lining with uhpc[J]. Engineering Mechanics, 2019, 36(11): 41-49.
[8]
翟五洲,翟一欣,张东明,等. 盾构隧道钢板加固衬砌管片环缝抗剪性能数值模拟研究[J]. 岩土工程学报, 2019, 41(增刊2): 235-239. ZHAI Wuzhou, ZHAI Yixin, ZHANG Dongming, et al. Numerical study on shearing performance of seel plate strengthened circumferential joints of segmental tunnel linings[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(Suppl.2): 235-239.
[9]
刘梓圣, 张冬梅. 软土盾构隧道芳纶布加固机理和效果研究[J].现代隧道技术, 2014, 51(5): 155-160. LIU Zisheng, ZHANG Dongmei. The mechanism and effects of AFRP reinforcement for a shield tunnel in soft soil[J]. Modern Tunnelling Technology, 2014, 51(5): 155-160.
[10]
郭英杰, 丁文其, 李硕标, 等. 新型波纹不锈钢加固既有地铁盾构隧道数值分析[J]. 现代隧道技术, 2021, 58(增刊1): 40-48. GUO Yingjie, DING Wenqi, LI Shuobiao, et al. Numerical analysis of existing metro shield tunnel strengthened with new corrugated stainless steel[J]. Modern Tunnelling Technology, 2021, 58(Suppl.1): 40-48.
[11]
YU Chengshuo, DING Wenqi, WU Tianxiang, et al. Study on calculation method of new corrugated steel reinforcement structure of highway tunnel[J]. IOP Conference Series: Materials Science and Engineering, 2020, 741: 012073.
[12]
SUN Keguo, HONG Yiqin, XU Weiping, et al. Analysis and prediction of mechanical characteristics of corrugated plate as primary support in tunnels[J]. Tunnelling and Underground Space Technology, 2021, 111: 103845.
[13]
魏纲, 厉京, 宣海力, 等. 大型深基坑开挖对旁边地铁盾构隧道影响的实测分析[J]. 铁道科学与工程学报, 2018, 15(3): 718-726. WEI Gang, LI Jing, XUAN Haili, et al. Monitoring data analysis on the influence of large deep foundation pit excavation on nearby metro shield tunnel[J]. Journal of Railway Science and Engineering, 2018, 15(3): 718-726.
[14]
王钦, 魏纲, 徐天宝, 等. 卸载工况下槽钢加固盾构管片的受力性能数值分析[J]. 低温建筑技术, 2022, 44(9): 111-116. WANG Qin, WEI Gang, XU Tianbao, et al. Numerical analysis of mechanical performance of shield segment strengthened by channel steel under unloading condition[J]. Low Temperature Architecture Technology, 2022, 44(9): 111-116.
[15]
刘亚宇, 刘加湾, 魏纲, 等. 旁侧基坑开挖偏心卸载下盾构隧道横断面受力变形研究[J]. 隧道建设(中英文), 2020, 40(9):1333-1340. LIU Yayu, LIU Jiawan, WEI Gang, et al. Study on mechanical deformation of shield tunnel cross-section under eccentric unloading of side foundation pit excavation[J]. Tunnel Construction, 2020, 40(9): 1333-1340.
[16]
魏纲, 张鑫海, 林心蓓, 等. 基坑开挖引起的旁侧盾构隧道横向受力变化研究[J]. 岩土力学, 2020, 41(2): 635-644. WEI Gang, ZHANG Xinhai, LIN Xinbei, et al. Variations of transverse forces on nearby shield tunnel caused by foundation pits excavation[J]. Rock and Soil Mechanics, 2020, 41(2): 635-644.
乌延玲. 公路钢波纹管涵洞受力与变形特性及应用研究[D].西安: 长安大学, 2012. WU Yanling. Study on mechanical and deformation characteristics and application of highway steel corrugated pipe culvert[D]. Xi'an: Chang'an University, 2012.
