盾构隧道“芳纶布-钢板”综合加固效果研究

详细信息    查看官网全文

• 英文论文题名：Study on Effect of AFRP and Steel Plate Reinforcement on Shield Tunnel Lining
• 论文作者：翟五洲 ; 张东明 ; 黄宏伟 ; 张洁
• 英文论文作者：ZHAI Wuzhou ; ZHANG Dongming ; HUANG Hongwei ; ZHANG Jie ; Department of Geotechnical Engineering ; Tongji University ; Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education Tongji University
• 年：2016
• 作者机构：同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
• 论文关键词：盾构隧道 ; 横向变形 ; 芳纶布加固 ; 钢板加固 ; 数值模拟
• 英文论文关键词：Shield tunnel ; Transverse deformation ; AFRP ; Steel reinforcement ; Numerical simulation
• 会议召开时间：2016-10-24
• 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
• 语种：中文
• 分类号：U455.43
• 学会代码：OGTY
• 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
• 会议地点：中国四川成都
• 主办单位：中国土木工程学会隧道及地下工程分会
• 学会名称：中国土木工程学会
• 页数：8
• 文件大小：1701k
• 原文格式：O
• 会议级别：全国

摘要

随着软土地区运营地铁隧道服役时间增长,各种原因导致的隧道结构损坏严重威胁着盾构隧道的结构安全。本文以上海地铁某区间隧道突发地表堆载引起隧道横向大变形事故为背景,采用数值模拟方法,模拟已变形盾构隧道施筑芳纶布加固和钢板加固过程,对比两种方法的单独加固效果和适用条件。在此基础上,建立"芳纶布一钢板"综合加固的数值模拟方法,并对其加固效果进行讨论。研究证明,地表堆载作用致隧道横向变形变形呈显著的非线性发展趋势;钢板加固对隧道横向抗变形能力的提高程度约为芳纶布加固的4.5倍;对于已发生横向变形的隧道,采用"芳纶布-钢板"综合加固方法能够有效控制结构横向变形的继续发展。在相同荷载条件下,相比于未加固隧道,"芳纶布-钢板"综合加固能够减小约60%的隧道水平收敛变形。
Shield tunnel was and is being applied as the main tunnel construction method in urban rail transit system.However due to uncertainties in surrounding environment and the features of assembled lining structures,many structural failures or defects have been frequently detected.In this paper,the development and mechanism of transverse deformation of shield tunnel under extreme surcharge is analyzed using two-dimensional numerical model.Two reinforcement methods,i.e.AFRP(Aramid Fiber Reinforced Polymer) and steel plate,are simulated.Then the effect of FRP and steel plate reinforcement on the improvement of lining capacity of anti-deformation is discussed.The research indicates that the relationship between transverse deformation of shield tunnel and surcharge form ground surface is significantly nonlinear.The reinforcement ability of steel plate is 4.5 times higher than that of FRP in term of the improvement of transverse anti-deformation capacity of the reinforced tunnel.The anti-deformation capacity of damaged tunnel can be significantly improved using AFRP-steel plate reinforcement.In this way,the horizontal convergence is reduced by60%compared to the unreinforced tunnel.

引文

[1]王如路.上海软土地铁隧道变形影响因素及变形特征分析[J].地下工程与隧道,2009,(1):1-6.WANG Rulu.Factors Influencing Deformation of Shanghai Soft Soil Metro Tunnel and Deformation Analysis[J].Underground Engineering and Tunnels,2009,(1):1-6.
    [2]中华人民共和国国家标准GB 50175-2013地铁设计规范[S].北京:中国建筑工业出版社,2013.National Standards of the People's Republic of China.GB 50175-2013 Code for Design of Metro[S].Beijing:China Architecture&Building Press,2013.
    [3]Chi-Te CHANG,Ming-Jung WANG,Chien-Tzen CHANG,et al.Repair of displaced shield tunnel of the Taipei rapid transit system[J].Tunnelling and Underground Space Technology,2001,16:167-173.
    [4]邵华,黄宏伟,张东明,王如路.突发堆载引起软土地铁盾构隧道大变形整治研究[J].岩土工程学报,2016,38(6):1036-1043.SHAO Hua,HUANG Hongwei,ZHANG Dongming,WANG Rulu.Case Study on Repair Work for Excessively Deformed Shield Tunnel Under Accidental Surface Surcharge in Soft Clay[J].Chinese Journal of Geotechnical Engineering,2016,38(6):1036-1043.
    [5]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,2014,5(51):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.
    [6]邹家南.地铁盾构隧道钢板衬加固效果的数值实验研究[D].华南理工大学,2014.ZOU Jianan.Numerical Study on Reinforcement Effect of Metro Shield Tunnel Reinforced by Steel Plates[D].Guangzhou:South China University of Technology,master thesis,2014.
    [7]柳献,张浩立,唐敏,鲁亮,王秀志.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):131-136.LIU Xian,ZHANG Haoli,et al.Experimental Study of the Ultimate Bearing Capacity of a Shield Tunnel Reinforced by a SemiRing Steel Plate[J].Modern Tunnelling Technology,2014,51(3):131-137.
    [8]柳献,张浩立,唐敏,鲁亮,王秀志.内张钢圈加固盾构隧道结构承载能力的试验研究——整环加固法[J].岩石力学与工程学报,2013,32(11):2301-2306.LIU Xian,ZHANG Haoli,et al.Experimental Study Of Ultimate Bearing Capacity Of Shield Tunnel Reinforced By Full-Ring Steel Plate[J].Chinese Journal of Geotechnical Engineering,2013,32(11):2301-2306.
    [9]ZHAO,HL;LIU,X;BAO YH;YUAN Y;BAI Y.Simplified nonlinear simulation of shield tunnel lining reinforced by epoxy bonded steel plates[J].Tunnelling and Underground Space Technology,2016,51:362-371.
    [10]杨敏,赵锡宏.分层土中的单桩分析[J].同济大学学报(自然科学版),1992,20(4):421-428.Yang Min,Zhao Xihong.An Approach for Single Pile in Layered Soil[J].Journal of Tongji University,1992,20(4):421-428.
    [11]张厚美,张正林,王建华.盾构隧道装配式管片接头三维有限元分析[J].上海交通大学学报,2003,37(4):566-569.Zhang Houmei,Zhang Zhenglin,Wang Jianhua.3-D FEM Analysis on Prefabricated Segment Joints of Shield Tunnel[J].Journal of Shanghai Jiaotong University,2003,37(4):566-569.
    [12]邢建英,杨勇新,张云波,罗漪,陈绪军.芳纶纤维布拉伸强度标准值的确定[J].四川建筑科学研究,2009,35,35(3):69-71.Xing Jianying,Yang Yongxin,Zhang Yunbo,Luo Qi,Chen Chujun.The Confirmation of the Tensile Strength Standard Numerical Value of AFRP[J].Si Chuan Building Science,2009,35,35(3):69-71.