基于模型试验的盾构隧道纵向刚度分析
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摘要
为探明盾构隧道纵向变形性能及抗弯刚度有效率的取值,基于模型试验,根据相似理论对通缝、错缝及匀质圆筒模型进行纵向模型试验研究。分别对3种纵向试验模型进行了加载试验,采用数据采集系统测试加载过程中的管片模型的纵向变形,得到了各级荷载下通缝、错缝及匀质圆筒模型纵向变形规律及其抗弯刚度有效率,并对试验结果进行对比分析。结果表明:1盾构隧道纵向变形与荷载基本呈线性关系;2通缝、错缝隧道纵向抗弯刚度有效率分别在0.18~0.39和0.20~0.40;3通缝和错缝隧道的纵向弯曲变形性能基本一致,错缝拼装效应对盾构隧道纵向变形的影响并不明显,研究成果可为盾构隧道的设计提供参考。
In order to explore the performances of longitudinal deformation and the efficienct values of bending rigidity of shield tunnels, straight-jointed,stagger-jointed and uniform longitudinal models are investigated based on model tests and similarity theories. The values of longitudinal deformation of three kinds of longitudinal models under loads are measured by a data acquisition system. The rules of longitudinal deformation and the efficiencies of bending rigidity of the straight-jointed stagger-jointed, and uniform longitudinal models under all loading stages are obtained, by adding the concentrated loads on the models. The comparative analysis of the test results shows the linear relationship between the longitudinal deformation and the loads. The range of the efficienct values of longitudinal bending rigidity is between 0.18 and 0.39 under straight-jointed condition, and in the stagger-jointed model it is between 0.20 and 0.40. What's more, the performances of the longitudinal bending of straight-jointed and stagger-jointed tunnels are similar, and the stagger-jointed effect is not obvious to the longitudinal deformation of shield tunnels. This study may provide some references for the design of shield tunneling in China.
In order to explore the performances of longitudinal deformation and the efficienct values of bending rigidity of shield tunnels, straight-jointed,stagger-jointed and uniform longitudinal models are investigated based on model tests and similarity theories. The values of longitudinal deformation of three kinds of longitudinal models under loads are measured by a data acquisition system. The rules of longitudinal deformation and the efficiencies of bending rigidity of the straight-jointed stagger-jointed, and uniform longitudinal models under all loading stages are obtained, by adding the concentrated loads on the models. The comparative analysis of the test results shows the linear relationship between the longitudinal deformation and the loads. The range of the efficienct values of longitudinal bending rigidity is between 0.18 and 0.39 under straight-jointed condition, and in the stagger-jointed model it is between 0.20 and 0.40. What's more, the performances of the longitudinal bending of straight-jointed and stagger-jointed tunnels are similar, and the stagger-jointed effect is not obvious to the longitudinal deformation of shield tunnels. This study may provide some references for the design of shield tunneling in China.
引文
[1]廖少明,白廷辉,彭芳乐,等.盾构隧道纵向沉降模式及其结构响应[J].地下空间与工程学报,2006,2(4):566–570.(LIAO Shao-ming,BAI Ting-hui,PENG Fang-le,et al.Longitudinal settlement forms and structural response of shield tunnel[J].Chinese Journal of Underground Space and Engineering.2006,2(4):566–570.(in Chinese))
[2]小泉淳.盾构隧道管片设计——从容许应力设计法到极限状态设计法[M].官林星,译.北京:中国建筑工业出版社,2012.(KOIZUMI Atsushi.Segment design for shield tunnel—from allowable stress design method to limit state design method[M].GUAN Lin-xing,trans.Beijing:China Architecture&Building Press,2012.(in Chinese))
[3]西野健三,吉田和夫,小泉淳.ツールドトンネル緃断方向の現場載荷試験とその考察[J].土木学会論文集,1986:131–40.(NISHINO Kenso,YOSHIDA Kazuo,KOIZUMI Atsushi.In-situ tests and consideration on shield tunnel in the longitudinal direction[J].Journal of Geotechnical Engineering,1986:131–140.(in Japanese))
[4]小泉淳,村上博智,石田智郎,等.急曲線施工用セダメントの设计法について[J].土木学会論文集,1992:111-120.(KOIZUMI Atsushi,MURAKAMI Hirotomo,ISHIDA Tomoaki,et al.Design method of segments at sharply curved section[J].Journal of Geotechnical Engineering,1992:111–120.(in Japanese))
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[6]志波由纪夫,川島一彦,大日方尚己,等.ツールドトンネルの耐震解析による長手方向覆工剛性の评价法[J].土木学会論文集,1988:319–327.(SHIBA Yukio,KAWASHIMA Kazuhiko,OBINATA Naomi,et al.An evaluation method of longitudinal stiffness of shield tunnel linings for application to seismic response analyses[J].Journal of Geotechnical Engineering.1988:319–327.(in Japanese))
[7]志波由纪夫,川島一彦,大日方尚己,等.応答変位法によるツールドトンネルの地震時断面力の算定法.[J].土木学会論文集,1989:385–394.(SHIBA Yukio,KAWASHIMA Kazuhiko,OBINATA Naomi,et al.Evaluation procedure for seismic stress developed in shield tunnels seismic deformation method[J].Journal of Geotechnical Engineering,1989:385–394.(in Japanese))
[8]徐凌.软土盾构隧道纵向沉降研究[D].上海:同济大学,2005.(XU Ling.Study on the longitudinal settlement of shield tunnel in soft soil[D].Shanghai:Tongji University,2005.(in Chinese))
[9]廖少明.圆形隧道纵向剪切传递效应研究[D].上海:同济大学,2002.(LIAO Shao-ming.Research on the effect of longitudinal shear transfer on circular tunnel lining[D].Shanghai:Tongji University,2002.(in Chinese))
[10]黄正荣.基于壳–弹簧模型的盾构衬砌管片受力特性研究[D].南京:河海大学,2007.(HUANG Zheng-rong.Study on the mechanics character of shield tunnel segment with shell-spring model[D].Nanjing:Hohai University,2007.(in Chinese))
[11]叶飞,何川,朱合华,等.考虑横向性能的盾构隧道纵向等效刚度分析[J].岩土工程学报,2011,33(12):1870–1876.(YE Fei,HE Chuan,ZHU He-hua,et al.Longitudinal equivalent rigidity analysis of shield tunnel considering transverse characteristics[J].Chinese Journal of Geotechnical Engineering,2011,33(12):1870–1876.(in Chinese))
[12]唐溢.盾构法隧道错缝拼装衬砌受力机理的研究[D].上海:同济大学,1988.(TANG Yi.Study on the mechanism of shield tunnel lining force of staggered joint assembly[D].Shanghai:Tongji University,2005.(in Chinese))
[13]唐志成,何川,林刚.地铁盾构隧道管片结构力学行为模型试验研究[J].岩土工程学报,2005,27(1):85–89.(TANG Zhi-cheng,HE Chuan,LIN Gang.Study on mechanical behavior of segment of shield tunnel of metro with model test[J].Chinese Journal of Geotechnical Engineering,2005,27(1):85–89.(in Chinese))
[14]杨征.武汉长江隧道大型管片衬砌结构力学特征研究[D].成都:西南交通大学,2007.(YANG Zheng.Study on the mechanical characteristics of segment lining for Wuhan Yangtze River Tunnel[D].Chengdu:Southwest Jiaotong University,2007(in Chinese))
[15]YE Fei,GOU Chang-fei,SUN Hai-dong,et al.Model test study on effective ratio of segment transverse bending rigidity of shield tunnel[J].Tunneling and Underground Space Technology,2014,41:193–205.
[2]小泉淳.盾构隧道管片设计——从容许应力设计法到极限状态设计法[M].官林星,译.北京:中国建筑工业出版社,2012.(KOIZUMI Atsushi.Segment design for shield tunnel—from allowable stress design method to limit state design method[M].GUAN Lin-xing,trans.Beijing:China Architecture&Building Press,2012.(in Chinese))
[3]西野健三,吉田和夫,小泉淳.ツールドトンネル緃断方向の現場載荷試験とその考察[J].土木学会論文集,1986:131–40.(NISHINO Kenso,YOSHIDA Kazuo,KOIZUMI Atsushi.In-situ tests and consideration on shield tunnel in the longitudinal direction[J].Journal of Geotechnical Engineering,1986:131–140.(in Japanese))
[4]小泉淳,村上博智,石田智郎,等.急曲線施工用セダメントの设计法について[J].土木学会論文集,1992:111-120.(KOIZUMI Atsushi,MURAKAMI Hirotomo,ISHIDA Tomoaki,et al.Design method of segments at sharply curved section[J].Journal of Geotechnical Engineering,1992:111–120.(in Japanese))
[5]小泉淳,村上博智,西野键三.ツールドトンネルの軸方向特性のモデルにイヒっいて[J].土木学会論文集,1988:79-88.(KOIZUMI Atsushi,MURAKAMI Hirotomo,NISHINO Kenso.Study on the analytical model of shield tunnel in longitudinal direction[J].Journal of Geotechnical Engineering,1988:79-88.(in Japanese))
[6]志波由纪夫,川島一彦,大日方尚己,等.ツールドトンネルの耐震解析による長手方向覆工剛性の评价法[J].土木学会論文集,1988:319–327.(SHIBA Yukio,KAWASHIMA Kazuhiko,OBINATA Naomi,et al.An evaluation method of longitudinal stiffness of shield tunnel linings for application to seismic response analyses[J].Journal of Geotechnical Engineering.1988:319–327.(in Japanese))
[7]志波由纪夫,川島一彦,大日方尚己,等.応答変位法によるツールドトンネルの地震時断面力の算定法.[J].土木学会論文集,1989:385–394.(SHIBA Yukio,KAWASHIMA Kazuhiko,OBINATA Naomi,et al.Evaluation procedure for seismic stress developed in shield tunnels seismic deformation method[J].Journal of Geotechnical Engineering,1989:385–394.(in Japanese))
[8]徐凌.软土盾构隧道纵向沉降研究[D].上海:同济大学,2005.(XU Ling.Study on the longitudinal settlement of shield tunnel in soft soil[D].Shanghai:Tongji University,2005.(in Chinese))
[9]廖少明.圆形隧道纵向剪切传递效应研究[D].上海:同济大学,2002.(LIAO Shao-ming.Research on the effect of longitudinal shear transfer on circular tunnel lining[D].Shanghai:Tongji University,2002.(in Chinese))
[10]黄正荣.基于壳–弹簧模型的盾构衬砌管片受力特性研究[D].南京:河海大学,2007.(HUANG Zheng-rong.Study on the mechanics character of shield tunnel segment with shell-spring model[D].Nanjing:Hohai University,2007.(in Chinese))
[11]叶飞,何川,朱合华,等.考虑横向性能的盾构隧道纵向等效刚度分析[J].岩土工程学报,2011,33(12):1870–1876.(YE Fei,HE Chuan,ZHU He-hua,et al.Longitudinal equivalent rigidity analysis of shield tunnel considering transverse characteristics[J].Chinese Journal of Geotechnical Engineering,2011,33(12):1870–1876.(in Chinese))
[12]唐溢.盾构法隧道错缝拼装衬砌受力机理的研究[D].上海:同济大学,1988.(TANG Yi.Study on the mechanism of shield tunnel lining force of staggered joint assembly[D].Shanghai:Tongji University,2005.(in Chinese))
[13]唐志成,何川,林刚.地铁盾构隧道管片结构力学行为模型试验研究[J].岩土工程学报,2005,27(1):85–89.(TANG Zhi-cheng,HE Chuan,LIN Gang.Study on mechanical behavior of segment of shield tunnel of metro with model test[J].Chinese Journal of Geotechnical Engineering,2005,27(1):85–89.(in Chinese))
[14]杨征.武汉长江隧道大型管片衬砌结构力学特征研究[D].成都:西南交通大学,2007.(YANG Zheng.Study on the mechanical characteristics of segment lining for Wuhan Yangtze River Tunnel[D].Chengdu:Southwest Jiaotong University,2007(in Chinese))
[15]YE Fei,GOU Chang-fei,SUN Hai-dong,et al.Model test study on effective ratio of segment transverse bending rigidity of shield tunnel[J].Tunneling and Underground Space Technology,2014,41:193–205.
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