|本期目录/Table of Contents|

[1]杨晓华,赵滨京,吴 昊,等.千枚岩深埋隧道支护参数对结构受力与变形的影响[J].建筑科学与工程学报,2020,37(03):108-117.[doi:10.19815/j.jace.2019.08054]
 YANG Xiao-hua,ZHAO Bin-jing,WU Hao,et al.Influence of Supporting Parameters of Phyllite Deep Tunnel on Structural Stress and Deformation[J].Journal of Architecture and Civil Engineering,2020,37(03):108-117.[doi:10.19815/j.jace.2019.08054]
点击复制

千枚岩深埋隧道支护参数对结构受力与变形的影响(PDF)
分享到:

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
37卷
期数:
2020年03期
页码:
108-117
栏目:
出版日期:
2020-05-30

文章信息/Info

Title:
Influence of Supporting Parameters of Phyllite Deep Tunnel on Structural Stress and Deformation
文章编号:
1673-2049(2020)03-0108-10
作者:
杨晓华赵滨京吴 昊李爱明
(长安大学 公路学院,陕西 西安 710064)
Author(s):
YANG Xiao-hua ZHAO Bin-jing WU Hao LI Ai-ming
(School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China)
关键词:
深埋公路隧道 绢云母千枚岩 现场测试 支护结构 受力 变形
Keywords:
deep highway tunnel sericite phyllite field testing supporting structure stress deformation
分类号:
TU311
DOI:
10.19815/j.jace.2019.08054
文献标志码:
A
摘要:
为探索成武高速2号隧道支护参数对结构受力与变形的影响,以室内试验、原位试验和现场测试为主要手段,研究了隧道围岩工程特性、初期支护围岩压力、二次衬砌接触压力、拱顶下沉、周边收敛-时间曲线的变化规律; 提出增加单层初支刚度、采用双层初支、增加双层初支刚度3种支护参数方案,再利用FLAC3D有限差分软件分析,以原始支护方案和3种支护参数方案为基础建立4种工况来确定不同支护参数对隧道结构受力与变形的影响。结果表明:在原始支护方案模拟结果中,拱顶竖直位移和拱脚水平位移趋于稳定时分别为185.57 mm和330.51 mm,与现场测试结果相对误差分别为5.5%和7.5%; 采用单层初支时,钢拱架间距由75 m调整为60 m,钢拱架型号由I18调整为I22,拱顶处的竖直位移为161.45 mm,相对于原始设计模拟结果减少了13%,拱脚处水平位移为273.21 mm,减少了17.3%,右拱腰处应力集中值为11.18 MPa,减少了9.1%; 采用双层初支时,2层中钢拱架间距与型号均与原始支护设计相同,为75 m与I18,拱顶处的竖直位移为130.58 mm,相对于原始设计模拟结果减少了29.6%,拱脚处水平位移为227 mm,减少了31.3%,右拱腰处应力集中值为8.24 MPa,减少了33.0%; 采用双层初支时,2层中钢拱架的间距均为60 m,型号为I22,拱顶处竖直位移为80.56 mm,相对于原始设计模拟结果减少了56.6%,拱脚处水平位移为159.34 mm,减少了51.8%,右拱腰处应力集中值为6.13 MPa,减少了50.2%,此工况下隧道支护结构的受力变形限制最好,拱顶沉降为80 mm,周边收敛为160 mm。
Abstract:
In order to explore the influence of supporting parameters on the stress and deformation of the structure of No.2 tunnel of ChengWu Expressway, based on laboratory test, in-situ test and field test, the engineering characteristics of surrounding rock of tunnel, the variation laws of surrounding rock pressure of initial support, contact pressure of secondary lining, vault subsidence, peripheral convergence-time curve were studied. Three supporting parameter schemes were put forward, including increasing the rigidity of single initial support, adopting double initial support and increasing the rigidity of double initial support. Based on the original supporting scheme and three supporting parameter schemes, four working conditions were established to determine the influence of different supporting parameters on the stress and deformation of the tunnel structure by using FLAC3D finite difference software. The results show that in the simulation results of the original support scheme, when the vertical displacement of the arch crown and the horizontal displacement of the arch foot tend to be stable, the values are 185.57 mm and 330.51 mm, and the relative errors with the field test results are 5.5% and 7.5% respectively. When the single-layer initial support is adopted, the steel arch spacing is adjusted from 75 m to 60 m, the steel arch type is adjusted from I18 to I22, and the vertical displacement at the vault is 161.45 mm, which is 13% less than the original design simulation results. The horizontal displacement at the arch foot is 273.21 mm, reducing by 17.3%, and the stress concentration at the right arch waist is 11.18 MPa, reducing by 9.1%. When the double-layer initial support is adopted, the spacing and type of steel arch in the two layers are the same as the original support design, which are 75 m and I18. The vertical displacement of the arch crown is 130.58 mm, which is 29.6% less than the original design simulation results. The horizontal displacement of the arch foot is 227 mm, which is 31.3% less. The stress concentration value of the right arch waist is 8.24 MPa, which is 33.0% less. When the two-layer initial support is adopted, the steel arch spacings in the two floors are both is 60 m, and the model is I22. The vertical displacement at the vault is 80.56 mm, which is 56.6% less than the original design simulation result. The horizontal displacement at the arch foot is 159.34 mm, reducing by 51.8%. The stress concentration at the right arch waist is 6.13 MPa, reducing by 50.2%. In this case, the stress and deformation of the tunnel support structure are the best. The settlement of the arch crown is 80 mm, and the peripheral convergence is 160 mm.

参考文献/References:

[1] 于远祥,陈宝平,张 涛,等.基于锚杆受力分析的软岩隧道变形规律及柔模支护技术[J].中国公路学报,2018,31(6):254-263.
YU Yuan-xiang,CHEN Bao-ping,ZHANG Tao,et al.Deformation Law and Flexible Formwork Support Technology of Soft Rock Tunnel Based on Force Analysis of Rock Bolt[J].China Journal of Highway and Transport,2008,31(6):254-263.
[2]李 磊,谭忠盛.挤压性破碎软岩隧道大变形特征及机制研究[J].岩石力学与工程学报,2018,37(增1):3593-3603.
LI Lei,TAN Zhong-sheng.Characteristic and Mechanism Research for Large Deformation Problem in Squeezing-shattered Soft Rock Tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2008,37(S1):3593-3603.
[3]戴永浩,陈卫忠,田洪铭,等.大梁隧道软岩大变形及其支护方案研究[J].岩石力学与工程学报,2015,34(增2):4149-4156.
DAI Yong-hao,CHEN Wei-zhong,TIAN Hong-ming,et al.Study of Large Deformation and Support Measures of Daliang Tunnel with Soft Surrounding Rockmass[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(S2):4149-4156.
[4]李鸿博,戴永浩,宋继宏,等.峡口高地应力软岩隧道施工监测及支护对策研究[J].岩土力学,2011,32(增2):496-501.
LI Hong-bo,DAI Yong-hao,SONG Ji-hong,et al.Construction Monitoring for Xiakou Soft Rock Tunnel Under High Geostress and Its Supporting Measures[J].Rock and Soil Mechanics,2011,32(S2):496-501.
[5]刘 高,张帆宇,李新召,等.木寨岭隧道大变形特征及机理分析[J].岩石力学与工程学报,2005,24(增2):5521-5526.
LIU Gao,ZHANG Fan-yu,LI Xin-zhao,et al.Research on Large Deformation and Its Mechanism of Muzhailing Tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(S2):5521-5526.
[6]JTG D70—2004,公路隧道设计规范[S].
JTG D70—2004,Code for Design of Road Tunnel[S].
[7]ZHENG K L,YANG X H,CHEN R,et al.Application of a Capillary Crystalline Material to Enhance Cement Grout for Sealing Tunnel Leakage[J].Construction and Building Materials,2019,214:497-505.
[8]JTJ042—94,公路隧道施工技术规范[S].
JTJ042—94,Technical Specifications for Construction of Highway Tunnel[S].
[9]罗 鑫.深埋软岩隧道大变形特征及支护措施探讨[D].西安:长安大学,2016.
LUO Xin.Explore the Deep Soft Rock Tunnel Large Deformation Characteristics and Support Measures[D].Xi'an:Chang'an University,2016.
[10]周晓军,高 杨,李泽龙,等.地质顺层偏压隧道围岩压力及其分布特点的试验研究[J].现代隧道技术,2006,43(1):12-21.
ZHOU Xiao-jun,GAO Yang,LI Ze-long,et al.Experimental Study on the Uneven Rock Pressure and Its Distribution Applied on a Tunnel Embedded in Geologically Bedding Strata[J].Modern Tunnelling Technology,2006,43(1):12-21.
[11]来弘鹏,谢永利,杨晓华.黄土公路隧道受力特性测试[J].长安大学学报:自然科学版,2005,25(6):53-56.
LAI Hong-peng,XIE Yong-li,YANG Xiao-hua.Mechanical Characteristic of Highway Tunnel in Loess[J].Journal of Chang'an University:Natural Science Edition,2005,25(6):53-56.
[12]晏长根,罗 鑫,王 凯,等.深埋软岩大变形偏压公路隧道3层支护结构受力变形特征[J].中国公路学报,2016,29(2):98-107.
YAN Chang-gen,LUO Xin,WANG Kai,et al.Deformation and Pressure Characteristics of Three-tier Support Structure in Large Deformation Bias Highway Tunnel with Deep Buried Soft Rock[J].China Journal of Highway and Transport,2016,29(2):98-107.
[13]王晓形,丁文琪,刘学增,等.地下洞室围岩压力分配比例研究[J].现代隧道技术,2006,43(增):144-147.
WANG Xiao-xing,DING Wen-qi,LIU Xue-zeng,et al.Study on Pressure Distribution Ratio of Surrounding Rock in Underground Caverns[J].Modern Tunnelling Technology,2006,43(S):144-147.
[14]陈 雷,黄德镛,陈发本.基于MIDAS/GTS软岩隧道预留变形量的分析研究[J].建筑机械化,2016(9):45-48.
CHEN Lei,HUANG De-yong,CHEN Fa-ben.Analysis and Research on Soft Rock Tunnel Reserved Deformation Based on MIDAS/GTS[J].Construction Mechanization,2016(9):45-48.
[15]丁 尧,王 俊,徐国文.层状岩体隧道围岩稳定性的数值模拟分析[J].成都理工大学学报:自然科学版,2019,46(3):363-372.
DING Yao,WANG Jun,XU Guo-wen.Numerical Simulation Analysis on the Tunnel Stability in Layered Rock Mass[J].Journal of Chengdu University of Technology:Science & Technology Edition,2019,46(3):363-372.
[16]YANG Z F,WANG Z Y,ZHANG L Q,et al.Back-analysis of Viscoelastic Displacement in a Soft Rock Road Tunnel[J].International Journal of Rock Mechanics and Mining Sciences,2001,38(3):331-341.
[17]ZHANG S S,WANG Y T,XIAO F,et al.Large-scale Model Testing of High-speed Railway Subgrade Under Freeze-thaw and Precipitation Conditions[J].Advances in Civil Engineering,2019(2):1-14.
[18]黄 俊,梁庆国,岳琳琳,等.高地应力软岩隧道不同施工方法数值模拟变形分析研究[J].铁道标准设计,2018,62(5):116-119,128.
HUANG Jun,LIANG Qing-guo,YUE Lin-lin,et al.Numerical Simulation Analysis of High Ground Stress Soft Rock Tunnel Deformation Subject to Different Construction Methods[J].Railway Standard Design,2018,62(5):116-119,128.
[19]SUN J,WANG L G.Numerical Simulation of Grooving Method for Floor Heave Control in Soft Rock Roadway[J].Mining Science and Technology(China),2011,21(1):49-56.
?

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2019-08-31
基金项目:国家自然科学基金项目(51378071); 陕西省交通科研项目(17-24K)
作者简介:杨晓华(1961-),男,河北唐山人,教授,博士研究生导师,工学博士,E-mail:xiaohuay@126.com。
更新日期/Last Update: 2020-06-08