|Table of Contents|

Computational model of outer-circle and inner-ellipse shield tunnel lining structure(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2021年04期
Page:
94-105
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Computational model of outer-circle and inner-ellipse shield tunnel lining structure
Author(s):
GU Shuan-cheng1;  SUN Guan-lin1;  SU Pei-li1; 2
(1. School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China; Xi'an Key Laboratory of Geotechnical and Underground Engineering, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China)
Keywords:
tunnel engineering;  shield tunnel;  outer-circle and inner-ellipse lining;  step discounting method;  mechanical property;  security
PACS:
U451.4
DOI:
10.19818/j.cnki.1671-1637.2021.04.006
Abstract:
In order to adapt the metro tunnel to the inhomogeneity of stratum load, referring to the structural form of special-shaped shield tunnel lining and taking into account the factors such as production and construction, the outer-circle and inner-elliptic shield tunnel lining structure was proposed, ensuring that the stiffness of the most unfavorable position of the lining structure meets the safety requirement, appropriately reducing the stiffness of the rest of the lining structure, and taking advantage of material properties. The flexibility coefficient and free term of outer-circle and inner-elliptic shield tunnel lining were solved by the stiffness step discounting method, and the calculation model of the lining was established. Referring to the actual engineering geological condition, the internal force distribution characteristics of outer-circle and inner-elliptic shield tunnel lining were studied. The safety of outer-circle and inner-elliptic shield tunnel lining was evaluated by the Code for Design of Railway Tunnel(TB 1003—2016). Calculation results show that compared with the equal stiffness shield tunnel lining, under the same loading condition, the outer-circle and inner-elliptic shield tunnel lining reduces the bending moments at the top and bottom of the lining structure, and transfers the maximum bending moment and maximum axial force to the arch waist, which simplifies the safety test by focusing on whether the internal force at the arch waist of the lining structure can meet the safety condition during the test. In terms of stability, the safety factors of equal stiffness shield tunnel lining are 3.07, 18.05 and 2.45 at the vault, arch shoulder and arch waist, respectively. The safety factors of outer-circle and inner-elliptic shield tunnel lining are 2.79, 14.86 and 2.21 at the vault, arch shoulder and arch waist, respectively, and slightly lower than those of the equal stiffness shield tunnel lining, but still greater than the minimum value 2.0 stipulated by the safety checking requirement, giving full play to the material characteristics of concrete. In terms of internal space, when the outer-circle and inner-elliptic shield tunnel lining and the equal stiffness shield tunnel lining have the same outer radius, the internal space area of the equal stiffness shield tunnel lining is 22.9 m2, and the value of the outer-circle and inner-elliptic shield tunnel lining is 23.76 m2 and significantly larger than that of the equal stiffness shield tunnel lining. Therefore, the area and utilization rate of internal space of the proposed lining increase without expanding the outer radius. 8 tabs, 11 figs, 31 refs.

References:

[1] 晏启祥,王春艳,郑代靖,等.大断面水下盾构隧道管片设计参数及其统计分析[J].铁道标准设计,2016,60(2):99-104,118.
YAN Qi-xiang, WANG Chun-yan, ZHENG Dai-jing, et al. Conformation design and statistical analysis of large underwater shield tunnel[J]. Railway Standard Design, 2016, 60(2): 99-104, 118.(in Chinese)
[2] 陈炜韬,姜志毅,董宇苍,等.大直径双护盾TBM公路隧道管片分块设计探讨[J].铁道科学与工程学报,2018,15(1):170-177.
CHEN Wei-tao, JIANG Zhi-yi, DONG Yu-cang, et al. Discussion on the partition design of large diameter double-shield TBM tunnel shield tunnel linings[J]. Journal of Railway Science and Engineering, 2018, 15(1): 170-177.(in Chinese)
[3] 陈炜韬,傅支黔,马建新.大直径双护盾TBM隧道管片厚度设计研究[J].铁道建筑,2017,57(10):60-62.
CHEN Wei-tao, FU Zhi-qian, MA Jian-xin. Design research on segment thickness of double shield TBM tunnel with large diameter[J]. Railway Engineering, 2017, 57(10): 60-62.(in Chinese)
[4] 丁军霞,冯卫星,杜学玲.盾构隧道管片衬砌内力及变形的影响因素分析[J].石家庄铁道学院学报,2004,17(3):75-79.
DING Jun-xia, FENG Wei-xing, DU Xue-ling. Analysis of factors affecting the internal forces and displacement of shield tunnel segment lining[J]. Journal of Shijiazhuang Railway Institute, 2004, 17(3): 75-79.(in Chinese)
[5] 赵国旭,何 川.盾构隧道管片设计的主要影响因素分析[J].铁道建筑,2003(12):25-29.
ZHAO Guo-xu, HE Chuan. Analysis of the main influencing factors of shield tunnel linings design[J]. Railway Engineering, 2003(12): 25-29.(in Chinese)
[6] 黄式浩,狄宏规,王友文,等.管片厚度对大直径盾构隧道受力及变形的影响[J].华东交通大学学报,2020,37(1):15-22.
HUANG Shi-hao, DI Hong-gui, WANG You-wen, et al. Influence of segment thickness on the force and deformation of large-diameter shield tunnel[J]. Journal of East China Jiaotong University, 2020, 37(1): 15-22.(in Chinese)
[7] 黄钟晖,廖少明,刘国彬.上海软土盾构法隧道管片厚度的优化[J].岩土力学,2000,21(4):326-330.
HUANG Zhong-hui, LIAO Shao-ming, LIU Guo-bin. The optimization of the segment thickness of shield tunnel in Shanghai soft soils[J]. Rock and Soil Mechanics, 2000, 21(4): 326-330.(in Chinese)
[8] 黄钟晖,廖少明,刘国彬.管片厚度对隧道受力及使用性能的影响[J].建筑技术,2000,31(7):471-472.
HUANG Zhong-hui, LIAO Shao-ming, LIU Guo-bin. The effect of tunnel segment thickness on the behavior of tunnel in use[J]. Architecture Technology, 2000, 31(7): 471-472.(in Chinese)
[9] 杨友彬.跨座式单轨盾构隧道管片厚度研究[J].现代城市轨道交通,2019(9):75-79.
YANG You-bin. Study on segment thickness in tunnel of straddle type monorail shield[J]. Modern Urban Transit, 2019(9): 75-79.(in Chinese)
[10] HUANG Xin, ZHU Ye-ting, ZHANG Zi-xin, et al. Mechanical behaviour of segmental lining of a sub-rectangular shield tunnel under self-weight[J]. Tunnelling and Underground Space Technology, 2018, 74: 131-144.
[11] LIU Xian, LIU Zhen, YE Yu-hang, et al. Mechanical
behavior of quasi-rectangular segmental tunnel linings: further insights from full-scale ring tests[J]. Tunnelling and Underground Space Technology, 2018, 79: 304-318.
[12] LIU Xian, YE Yu-hang, LIU Zhen, et al. Mechanical behavior of quasi-rectangular segmental tunnel linings: first results from full-scale ring tests[J]. Tunnelling and Underground Space Technology, 2018, 71: 440-453.
[13] 朱叶艇,朱雁飞,张子新,等.异形盾构管片原型试验混凝土裂缝宽度预测与可视化[J].上海交通大学学报,2019,53(10):1259-1268.
ZHU Ye-ting, ZHU Yan-fei, ZHANG Zi-xin, et al. Prediction and visualization of crack width for the prototype test on special-shaped shield segments[J]. Journal of Shanghai Jiaotong University, 2019, 53(10): 1259-1268.(in Chinese)
[14] 嵇 中.超大矩形断面隧道衬砌结构优化设计研究[J].中国市政工程,2018(6):82-85,106-107.
JI Zhong. Study on optimum design of lining structure of super-large rectangular section tunnel[J]. China Municipal Engineering, 2018(6): 82-85, 106-107.(in Chinese)
[15] 郭艳华,李 岳,马新亮.公路隧道变截面衬砌外轮廓的确定[C]∥中国土木工程学会.2006年中国交通土建工程学术论文集.北京:中国土木工程学会,2006:634-637.
GUO Yan-hua, LI Yue, MA Xin-liang. Determination of the outer profile of variable section lining in highway tunnels[C]∥CCES. Proceedings of the Chinese Academic Papers on Transportation Civil Engineering(2006). Beijing: CCES, 2006: 634-637.(in Chinese)
[16] 郑永光,薛广记,陈金波,等.我国异形掘进机技术发展、应用及展望[J].隧道建设(中英文),2018,38(6):1066-1078.
ZHENG Yong-guang, XUE Guang-ji, CHEN Jin-bo, et al. Development, application and prospect of technology of special-shaped boring machine in China[J]. Tunnel Construction, 2018, 38(6): 1066-1078.(in Chinese)
[17] 朱叶艇,朱雁飞,张子新,等.异形盾构隧道衬砌结构计算模型和受力特征研究[J].岩土工程学报,2018,40(7):1230-1236.
ZHU Ye-ting, ZHU Yan-fei, ZHANG Zi-xin, et al. Computational model and mechanical characteristics of linings of special-shaped shield tunnels[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(7): 1230-1236.(in Chinese)
[18] 朱瑶宏,朱雁飞,黄德中,等.类矩形盾构法隧道关键技术研究与应用[J].隧道建设,2017,37(9):1055-1062.
ZHU Yao-hong, ZHU Yan-fei, HUANG De-zhong, et al. Development and application of key technologies to quasi-rectangular shield tunneling[J]. Tunnel Construction, 2017, 37(9): 1055-1062.(in Chinese)
[19] 孙统立.异形盾构工法研究现状及其应用[J].铁道科学与工程学报,2017,14(9):1959-1966.
SUN Tong-li.The research status and engineering application of non-circular shield method[J]. Journal of Railway Science and Engineering, 2017, 14(9): 1959-1966.(in Chinese)
[20] 李向红.结构参数对异形断面盾构隧道管片力学特性的影响研究[J].施工技术,2017,46(8):68-71.
LI Xiang-hong. Effects of structural design parameters on mechanical behavior of lining segment for special section shield tunnel[J]. Construction Technology, 2017, 46(8): 68-71.(in Chinese)
[21] 叶开沅,俞焕然.超静定等强度梁[J].兰州大学学报,1983(增):1-9.
YE Kai-yuan, YU Huan-ran. Static-indeterminant equi-strength beams[J]. Journal of Lanzhou University, 1983(S): 1-9.(in Chinese)
[22] 叶开沅,丁延岭.非均匀变厚度连续梁的稳定性和自由振动[J].兰州大学学报,1982(2):42-74.
YE Kai-yuan, DING Yan-ling. The stability and free vibration of non-homogeneous variable thickness continuous beam[J]. Journal of Lanzhou University, 1982(2): 42-74.(in Chinese)
[23] 叶开沅,汤任基,甄继庆.非均匀变截面弹性圆环在任意载荷下的弯曲问题[J].应用数学和力学,1981,2(1):1-12.
YE Kai-yuan, TANG Ren-ji, ZHEN Ji-qing. Bending of non-homogeneous variable thickness elastic circular ring under arbitrarily distributed loads[J]. Applied Mathematics and Mechanics, 1981, 2(1): 1-12.(in Chinese)
[24] 龚旭东.西安地铁2号线试验段区间盾构管片设计[J].铁道工程学报,2011(增):35-38.
GONG Xu-dong. Shield tunnel linings design of experiment section of shield tunnel of Line 2 of Xi'an Subway[J]. Journal of Railway Engineering Society, 2011(S): 35-38.(in Chinese)
[25] 胡 辉,张 列,仇文革.三种盾构管片配筋设计方法对比及现场实测分析[J].水文地质工程地质,2012,39(6):72-76.
HU Hui, ZHANG Lie, QIU Wen-ge. Comparative analysis of three methods in shield segment design and onsite monitoring analysis[J]. Hydrogeology and Engineering Geology, 2012, 39(6): 72-76.(in Chinese)
[26] 于学馥.轴变论与围岩变形破坏的基本规律[J].铀矿冶,1982,1(1):8-17,7.
YU Xue-fu. On the theory of ax1al variation and basic rules of deformation and fracture of rocks surrounding underground excavations[J]. Uranium Mining and Metallurgy, 1982, 1(1): 8-17, 7.(in Chinese)
[27] 于学馥,乔 端.轴变论和围岩稳定轴比三规律[J].有色金属,1981,33(3):8-15.
YU Xue-fu, QIAO Duan. Theory of axial variation and three rules of axial ratio for stabilizing country rock[J]. Nonferrous Metals, 1981, 33(3): 8-15.(in Chinese)
[28] 杨雪强,何世秀,高桐.对巷道开孔卸载参数的研究[J].岩土力学,1995,16(1):46-53.
YANG Xue-qiang, HE Shi-xiu, GAO Tong. Research about parameter of unloading by hole drilling in underground roadway[J]. Rock and Soil Mechanics, 1995, 16(1): 46-53.(in Chinese)
[29] 郑建伟,鞠文君,孙晓冬,等.巷道变形差异化响应特征及支护设计分析[J].采矿与岩层控制工程学报,2021,3(3):1-9.
ZHENG Jian-wen, JU Wen-jun, SUN Xiao-dong, et al. Differentiation response characteristic of roadway deformation and its supporting analysis[J]. Journal of Mining and Strata Control Engineering, 2021, 3(3): 1-9.(in Chinese)
[30] 小 夫.轴变论—关于地压问题的一个理论(上)[J].有色金属,1959(16):9-18.
XIAO Fu. Axis variation theory—several theories about ground pressure problem(I)[J]. Passive Carrier Metal, 1959(16): 9-18.(in Chinese)
[31] 小 夫.轴变论——关于地压问题的几个理论(下)[J].有色金属,1959(17):1-9.
XIAO Fu.Axis variation theory——several theories about ground pressure problem(II)[J]. Passive Carrier Metal, 1959(17): 1-9.(in Chinese)

Memo

Memo:
-
Last Update: 2021-09-01