盾构衬砌管片环向接头刚度解析法及参数研究
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摘要
基于接头断面的不均匀变形、接头细部构造分析在正、负弯矩作用下接头分离前后的力学特性,分别给出管片环向接头的抗拉刚度和抗弯刚度在接头分离前后的非线性解析公式,以及接头抗压刚度和抗剪刚度的线性解析公式。在此基础上,得到不同管片厚度和螺栓等级工况下线性接头和非线性接头模型的转角与弯矩的关系,并对线性接头模型和非线性接头模型的内力和变形特性进行对比分析。研究结果表明:在接头分离前,其抗弯刚度随管片厚度增大而增大;在接头分离后,接头抗弯刚度急剧减小,但不同管片厚度下的接头抗弯刚度分布规律大致相同;随着螺栓等级提高,接头分离时的突变转角与弯矩逐渐增大;在正弯矩作用下各等级螺栓的弯矩增量比负弯矩作用下的弯矩增量大,但各等级螺栓的转角增量要比负弯矩作用下的转角增量小;在荷载作用下,隧道管片弯矩随螺栓等级提高而逐渐减小;螺栓等级提高对线性与非线性模型的轴力影响较小,管片厚度变化对线性和非线性模型的剪力影响较小,但线性和非线性模型管片的剪力随螺栓等级提高而减小。
Based on the inhomogeneous deformationdetail and construction detail, and mechanism of joint separation before and after positive and negative bending moments, mechanical characteristics of the joint before and after joint separation with positive and negative moments were analyzed. Nonlinear analytic formulas for tensile stiffness and rotation stiffness of the transverse joint before and after joint separation with positive and negative moments and linear analytic formulas for compressive stiffness and shear stiffness were obtained. On this basis, the relationship between rotation angle and bending moment of both linear joint and the nonlinear joint models under conditions of different segment thicknesses and bolt grades was obtained, and internal force and deformation characteristics of both linear joint model and the nonlinear joint models were compared and analyzed. The results show that bending stiffness of the joint increases with the increase of segment thickness, and bending stiffness of the joint changes after joint separation. However, distributions of bending stiffness of the joint with different segment thicknesses are approximately the same.With the increase of bolt grade, rotation angle and bending moment of the joint separation increase gradually. The moment increment of each grade bolt with positive bending moment is larger than that of negative bending moment, but the angle increment of each grade bolt with positive bending moment is smaller than that of negative bending moment. The bending moment of tunnel segment decreases with the increase of bolt grade under the load. The increase of bolt grade has little influence on the axial force of both linear and nonlinear models. Change of segment thickness has little effect on the shear force of both linear and nonlinear model, but the shear force of both linear and nonlinear model segment decrease with the increase of bolt grade.
Based on the inhomogeneous deformationdetail and construction detail, and mechanism of joint separation before and after positive and negative bending moments, mechanical characteristics of the joint before and after joint separation with positive and negative moments were analyzed. Nonlinear analytic formulas for tensile stiffness and rotation stiffness of the transverse joint before and after joint separation with positive and negative moments and linear analytic formulas for compressive stiffness and shear stiffness were obtained. On this basis, the relationship between rotation angle and bending moment of both linear joint and the nonlinear joint models under conditions of different segment thicknesses and bolt grades was obtained, and internal force and deformation characteristics of both linear joint model and the nonlinear joint models were compared and analyzed. The results show that bending stiffness of the joint increases with the increase of segment thickness, and bending stiffness of the joint changes after joint separation. However, distributions of bending stiffness of the joint with different segment thicknesses are approximately the same.With the increase of bolt grade, rotation angle and bending moment of the joint separation increase gradually. The moment increment of each grade bolt with positive bending moment is larger than that of negative bending moment, but the angle increment of each grade bolt with positive bending moment is smaller than that of negative bending moment. The bending moment of tunnel segment decreases with the increase of bolt grade under the load. The increase of bolt grade has little influence on the axial force of both linear and nonlinear models. Change of segment thickness has little effect on the shear force of both linear and nonlinear model, but the shear force of both linear and nonlinear model segment decrease with the increase of bolt grade.
引文
[1]刘四进,封坤,何川,等.大断面盾构隧道管片接头抗弯力学模型研究[J].工程力学,2015,32(12):215-224.LIU Sijin,FENG Kun,HE Chuan,et al.Study on the bending mechanical model of segmental joint in shield tunnel with large cross-section[J].Engineering Mechanics,2015,32(12):215-224.
[2]杨春山,莫海鸿,魏立新.盾构隧道环向接头等效刚度修正计算及其影响因素研究[J].铁道科学与工程学报,2017,14(7):1497-1504.YANG Chenshan,MO haihong,WEI Lixin.Correction calculation for circumferential equivalent bolt stiffness of shield tunnel and the analysis of its influencing factors[J].Journal of Railway Science and Engineering,2017,14(7):1497-1504.
[3]ZHAO Huiling,LIU Xian,BAO Yihai,et al.Simplified nonlinear simulation of shield tunnel lining reinforced by epoxy bonded steel plates[J].Tunnelling and Underground Space,2016,51(1):362-371.
[4]朱合华,黄伯麒,李晓军,等.盾构衬砌管片接头内力–变形统一模型及试验分析[J].岩土工程学报,2014,36(12):2153-2160.ZHU Hehua,HUANG Boqi,LI Xiaojun,et al.Unified model for internal force and deformation of shield segment joints and experimental analysis[J].Chinese Journal of Geotechnical Engineering,2014.
[5]何川,齐春,封坤,等.基于D-P准则的盾构隧道围岩与衬砌结构相互作用分析[J].力学学报,2017,49(1):31-40.HE Chuan,QI Chun,FENG Kun,et al.Theoretical analysis of interaction between surrounding rocks and lining structure of shield tunnel based on drucker-prager yield criteria[J].Journal of Theoretical and Applied Mechanics,2017,49(1):31-40.
[6]MASHIMO H,ISHIMURA T.Evaluation of the load on shield tunnel lining in gravel[J].Tunnelling and Underground Space Technology,2003,18(2):233-241.
[7]徐国文,卢岱岳.接头抗弯刚度非线性及渗水影响下盾构隧道力学行为分析[J].岩土工程学报,2016,38(7):1202-1211.XU Guowen,LU Daiyue.Mechanical behavior of shield tunnel considering nonlinearity of flexural rigidity and leakage of joints[J].Journal of Geotechnical Engineering,2016,38(7):1202-1211.
[8]于宁,白廷辉,朱合华.盾构隧道预应力管片接头的模型试验研究[J].地下空间与工程学报,2009,5(3):439-449.YU Ning,BAI Yanhui,ZHU Hehua.Model experimental study on joints stiff of precast and prestressed concrete lining in shield tunnels[J].Journal of Underground Space and Engineering,2009,5(3):439-449.
[9]封坤,何川,肖明清.高轴压作用下盾构隧道复杂接缝面管片接头抗弯试验[J].土木工程学报,2016,49(8):99-110.FENG Kun,HE Chuan,XIAO Mingqing.Bending tests of segment joint with complex interface for shield tunnel under high axial pressure[J].China Civil Engineering Journal,2016,49(8):99-110.
[10]YE Fei,GOU Changfei,SUN Haidong,et al.Model test study on effective ratio of segment transverse bending rigidity of shield tunnel[J].Tunnelling and Underground Space Technology,2014,41(1):193-205.
[11]郭瑞,何川,封坤.大断面水下盾构隧道管片接头抗弯刚度及其对管片内力影响研究[J].中国铁道科学,2013,34(5):46-52.GUO Rui,HE Chuan,FENG Kun.Bending stiffness of segment joint and its effects on segment internal force for underwater shield tunnel with large cross-section[J].China Railway Science,2013,34(5):46-52.
[12]LI Zili,SOGA K,WANG Fei,et al.Behaviour of cast-iron tunnel segmental joint from the 3D FE analyses and development of a new bolt-spring model[J].Tunnelling and Underground Space Technology,2014,41(1):176-192.
[13]YUKINORI K.Present status and technology of shield tunneling method in japan[J].Tunneling Underground Space Technology.2003,18(2):145-159.
[14]官林星.错缝拼装下管片宽度对盾构隧道力学行为的影响[J].地下空间与工程学报,2015,11(4):852-858.GUAN Linxing.Effect of segment width on behavior of shield tunnel assembled in staggered pattern[J].Chinese Journal of Underground Space and Engineering,2015,11(4):852-858.
[15]MURAKAMI H.Study on the mechanical characteristic of segment joints in shield tunnel[J].Paper Reports of Civil Society,1980,296(5):73-85.
[16]TEODOR I.Prefabricated lining,conceptional analysis and comparative studies for optimal solution[C]//Proceedings of the ITA International Congress Tunnelling and Ground Conditions.Rotterdam,Netherlands:A.A.Balkema,1994:339-346.
[17]蒋洪胜,侯学渊.盾构法隧道管片接头转动刚度的理论研究[J].岩石力学与工程学报,2004,23(9):1574-1577.JIANG Hongsheng,HOU Xueyuan.Theoretical study of rotating stiffness of joint in shield tunnel segments[J].Chinese Journal of Rock Mechanics&Engineering,2004,23(9):1574-1577.
[18]何川,周济民,封坤,等.基于接头非线性抗弯刚度的盾构隧道迭代算法的实现与应用[J].土木工程学报,2012,45(3):166-173.HE Chuan,ZHOU Jimin,FENG Kun,et al.An iterative algorithm based on segment joint stiffness nonlinearity and application for shield tunnel structures[J].China Civil Engineering Journal,2012,45(3):166-173.
[19]董新平,解枫赞.一类盾构管片接头破坏历程的解析解[J].岩土工程学报,2013,35(10):1870-1875.DONG Xinping,XIE Fengzan.Analytical solution of segment joint model for segmented tunnel lining[J].Chinese Journal of Geotechnical Engineering,2013,35(10):1870-1875.
[20]小泉淳.盾构隧道的抗震研究及算例[M].张稳军,袁大军,译.北京:中国建筑工业出版社,2009:203-210.KOIZUMI A.Seismic research and numerical examples of shield tunnel[M].ZHANG Wenjun,YUAN Dajun,trans.Beijing:China Architecture and Building Press,2009:203-210.
[21]朱伟,钟小春,秦建设.盾构衬砌管片接头力学分析及双直线刚度模型研究[J].岩土力学,2006,27(12):2154-2158.ZHU Wei,ZHONG Xiaochun,QIN Jianshe.Mechanical analysis of segment joint of shield tunnel and research on bilinear joint stiffness model[J].Rock and Soil Mechanics,2006,27(12):2154-2158.
[2]杨春山,莫海鸿,魏立新.盾构隧道环向接头等效刚度修正计算及其影响因素研究[J].铁道科学与工程学报,2017,14(7):1497-1504.YANG Chenshan,MO haihong,WEI Lixin.Correction calculation for circumferential equivalent bolt stiffness of shield tunnel and the analysis of its influencing factors[J].Journal of Railway Science and Engineering,2017,14(7):1497-1504.
[3]ZHAO Huiling,LIU Xian,BAO Yihai,et al.Simplified nonlinear simulation of shield tunnel lining reinforced by epoxy bonded steel plates[J].Tunnelling and Underground Space,2016,51(1):362-371.
[4]朱合华,黄伯麒,李晓军,等.盾构衬砌管片接头内力–变形统一模型及试验分析[J].岩土工程学报,2014,36(12):2153-2160.ZHU Hehua,HUANG Boqi,LI Xiaojun,et al.Unified model for internal force and deformation of shield segment joints and experimental analysis[J].Chinese Journal of Geotechnical Engineering,2014.
[5]何川,齐春,封坤,等.基于D-P准则的盾构隧道围岩与衬砌结构相互作用分析[J].力学学报,2017,49(1):31-40.HE Chuan,QI Chun,FENG Kun,et al.Theoretical analysis of interaction between surrounding rocks and lining structure of shield tunnel based on drucker-prager yield criteria[J].Journal of Theoretical and Applied Mechanics,2017,49(1):31-40.
[6]MASHIMO H,ISHIMURA T.Evaluation of the load on shield tunnel lining in gravel[J].Tunnelling and Underground Space Technology,2003,18(2):233-241.
[7]徐国文,卢岱岳.接头抗弯刚度非线性及渗水影响下盾构隧道力学行为分析[J].岩土工程学报,2016,38(7):1202-1211.XU Guowen,LU Daiyue.Mechanical behavior of shield tunnel considering nonlinearity of flexural rigidity and leakage of joints[J].Journal of Geotechnical Engineering,2016,38(7):1202-1211.
[8]于宁,白廷辉,朱合华.盾构隧道预应力管片接头的模型试验研究[J].地下空间与工程学报,2009,5(3):439-449.YU Ning,BAI Yanhui,ZHU Hehua.Model experimental study on joints stiff of precast and prestressed concrete lining in shield tunnels[J].Journal of Underground Space and Engineering,2009,5(3):439-449.
[9]封坤,何川,肖明清.高轴压作用下盾构隧道复杂接缝面管片接头抗弯试验[J].土木工程学报,2016,49(8):99-110.FENG Kun,HE Chuan,XIAO Mingqing.Bending tests of segment joint with complex interface for shield tunnel under high axial pressure[J].China Civil Engineering Journal,2016,49(8):99-110.
[10]YE Fei,GOU Changfei,SUN Haidong,et al.Model test study on effective ratio of segment transverse bending rigidity of shield tunnel[J].Tunnelling and Underground Space Technology,2014,41(1):193-205.
[11]郭瑞,何川,封坤.大断面水下盾构隧道管片接头抗弯刚度及其对管片内力影响研究[J].中国铁道科学,2013,34(5):46-52.GUO Rui,HE Chuan,FENG Kun.Bending stiffness of segment joint and its effects on segment internal force for underwater shield tunnel with large cross-section[J].China Railway Science,2013,34(5):46-52.
[12]LI Zili,SOGA K,WANG Fei,et al.Behaviour of cast-iron tunnel segmental joint from the 3D FE analyses and development of a new bolt-spring model[J].Tunnelling and Underground Space Technology,2014,41(1):176-192.
[13]YUKINORI K.Present status and technology of shield tunneling method in japan[J].Tunneling Underground Space Technology.2003,18(2):145-159.
[14]官林星.错缝拼装下管片宽度对盾构隧道力学行为的影响[J].地下空间与工程学报,2015,11(4):852-858.GUAN Linxing.Effect of segment width on behavior of shield tunnel assembled in staggered pattern[J].Chinese Journal of Underground Space and Engineering,2015,11(4):852-858.
[15]MURAKAMI H.Study on the mechanical characteristic of segment joints in shield tunnel[J].Paper Reports of Civil Society,1980,296(5):73-85.
[16]TEODOR I.Prefabricated lining,conceptional analysis and comparative studies for optimal solution[C]//Proceedings of the ITA International Congress Tunnelling and Ground Conditions.Rotterdam,Netherlands:A.A.Balkema,1994:339-346.
[17]蒋洪胜,侯学渊.盾构法隧道管片接头转动刚度的理论研究[J].岩石力学与工程学报,2004,23(9):1574-1577.JIANG Hongsheng,HOU Xueyuan.Theoretical study of rotating stiffness of joint in shield tunnel segments[J].Chinese Journal of Rock Mechanics&Engineering,2004,23(9):1574-1577.
[18]何川,周济民,封坤,等.基于接头非线性抗弯刚度的盾构隧道迭代算法的实现与应用[J].土木工程学报,2012,45(3):166-173.HE Chuan,ZHOU Jimin,FENG Kun,et al.An iterative algorithm based on segment joint stiffness nonlinearity and application for shield tunnel structures[J].China Civil Engineering Journal,2012,45(3):166-173.
[19]董新平,解枫赞.一类盾构管片接头破坏历程的解析解[J].岩土工程学报,2013,35(10):1870-1875.DONG Xinping,XIE Fengzan.Analytical solution of segment joint model for segmented tunnel lining[J].Chinese Journal of Geotechnical Engineering,2013,35(10):1870-1875.
[20]小泉淳.盾构隧道的抗震研究及算例[M].张稳军,袁大军,译.北京:中国建筑工业出版社,2009:203-210.KOIZUMI A.Seismic research and numerical examples of shield tunnel[M].ZHANG Wenjun,YUAN Dajun,trans.Beijing:China Architecture and Building Press,2009:203-210.
[21]朱伟,钟小春,秦建设.盾构衬砌管片接头力学分析及双直线刚度模型研究[J].岩土力学,2006,27(12):2154-2158.ZHU Wei,ZHONG Xiaochun,QIN Jianshe.Mechanical analysis of segment joint of shield tunnel and research on bilinear joint stiffness model[J].Rock and Soil Mechanics,2006,27(12):2154-2158.
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