Analysis of Mechanical Characteristics of Support Structure for Tunnel in Close Proximity to Bias Shallow Loess Tunnel

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Journal of Railway Engineering Society ›› 2010, Vol. 27 ›› Issue (11) : 61-67.

WANG Qi—cai1．ZHAN Hong—yue2

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Abstract

Research purposes: The purpose is to ensure the safety of new tunnel construction and service safety of existing tunnel when constructing a new double—track tunnel in close proximity to the existing tunnel in parMlel．

Research conclusions:(1)Under the shallow bias conditions．the settlement and convergence of the arch of newly—built tunnel are big．(2)The rock pressure distribution is asymmetric like eat ears．(3)The stress on the farther side of the steel bow member is bigger than that on near side of the steel bow member and it plays a big role in supporting．(4)The Arch and side walls with sprayed concrete are in compression while the tensile stress i8 over the bottom．(5)The stress on the anchors of the arch system is small and it produces a little effect on the stability of the structure while the foot anchors produce a certain effect on the structural stability．(6)The existing tunnel is obviously affected by excavation of the new tunnel because excavation of the new tunnel produces two effects of bias and tension on the existing tunnel．(7)The distance between the proximite tunnels produces big effect on the existing tunnel lining．When the space iS fixed，the impact on the near side iS bigger than that on farther side．

Key words

proximate tunnels / loess tunnel / shallow bias / monitoring / numerical simulation / mechanical Characteristics

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WANG Qi—cai．ZHAN Hong—yue. Analysis of Mechanical Characteristics of Support Structure for Tunnel in Close Proximity to Bias Shallow Loess Tunnel[J]. Journal of Railway Engineering Society, 2010, 27(11): 61-67

References

[1] 谭忠盛，杨小林，等．复线隧道施工爆破对既有隧道的影响分析[J]．岩石力学与工程学报，2003(2)：281—285．

Tan Zhongsheng，Yang Xiaolin，etc．Effect of Blast in Double Line Tunnel on Existing Tunnel[J]．Chinese Jouranl of Rock Mechanics and Engineering。2003(2)： 281—285．

[2]熊安详，李俊法，伍绍鸿．新杨柳湾隧道施工及相邻既有隧道监测．铁道建筑技术，2002(2)：43—45．

Xiong Anxiang，Li Junfa，Wu Shaohong．Construction of New Yang Liuwan Tunnel and Monitoring of the Existing Adjacent Tunnel[J]．Railway Construction Technology，2002(2)：43—45．

[3]丁春林，周顺华，等．复线隧道与邻近既有线隧道施工的相互影响[J]．地下空间，1998(3)：135—140．

Ding Chuniin， Zhou Shunhua，etc． Effect of Construction in Double Line Tunnel on Existing Tunnel [J]．Underground Space，1998(3)：135—140．

[4] 郑俊杰，包德勇，龚彦峰．铁路隧道下穿既有高速公路隧道施工技术研究[J]．铁道工程学报，2006(8)：80一84．

Zheng Junjie，Bao Deyong，Gong Yanfeng．Research on Construction Control Technology for Railway Tunnel Underneath Passing Existing Expressway Tunnel[J]． Journal of Railway Engineering Society，2006(8)：80一 84．

[5]Duddeck H．Application of Numerical and Analysis for Tunneling International [J]． Journal for Numerical&Analytical Methods in Geotechnics，1991 (3)：1-9．

[6] 潘晓马．邻近隧道施工对既有隧道的影响[D]．成都：西南交通大学，2002．

Pan Xiaoma．Influence of a New Tunnel Construction on the Adjacent Existing Tunnel[D]．Chengdu： Southwest Jiaotong University，2002．

[7] 赵占厂，谢永利，杨晓华，等．黄土公路隧道衬砌受力特性测试研究[J]．中国公路学报，2004(1)：66—69．

Zhao Zhanchang，Xie Yongli，Yang Xiaohua，etc． Observation Research on the Mechanical Characteristic of Highway Tunnel Lining in Loess[J]．China Journal of Highway and Transport，2004(1)：66-69．

[8]潘昌实．隧道力学数值方法[M]．北京：中国铁道出版社， 1995．

Pan Changshi．Tunnel Mechanics Value Method[M]． Beijing：China Railway Publishing House，1995．

[9] 于学馥，郑颖人，刘怀恒，等．地下工程围岩稳定分析 [M]．北京：煤炭工业出版社，1983．

Yu Xuefu，Zheng Yingren，Liu huaiheng．Underground Engineering Stability Analysis[M]．Beijing：Coal Industry Press，1983．

[10]李德武，李培天，高峰，等．黄土隧道钢拱架受力量测与有限元分析[J]．公路，2005(8)：180—183．

Li Dewu，Li Peitian，Gao Feng， etc． Stress Measurement of Steel Centering of Tunnel in Loess and Analysis of Finite Element[J]．Highway，2005(8)：180— 183．

[11]沈卫平．浅埋黄土隧道施工方法及支护受力研究[J]．西部探矿工程，2001(2)：76—77．

Shen Weiping． Shallow Burial Loess the City Construction Methods and the Research West—-China Exploration Engineering[J]． West Tankuang Gongcheng，2001(2)：76-77．