大跨扁平隧道仰拱研究
|
摘要
仰拱是隧道衬砌结构的重要组成部分,能提高隧道结构的承载能力。以往的研究主要通过塑性区范围、应力、位移大小分析仰拱所起的作用。基于有限元强度折减法对比分析不同地质状况下仰拱对大跨扁平隧道整体安全系数大小的影响,得到一些有益的结论,为解决类似问题提供一种新思路。
The inverted arc is an important part of the tunnel lining structure and can improve the bearing capability of tunnel structure.The previous researches analyzed the role played by the inverted arch mainly via the range of plastic zone,stress and displacement.This paper based on strength reduction finite element method(FEM) compares and analyzes the influence of the inverted arch on the safety factor of the whole large-span flat tunnel under different geological conditions and has drawn some beneficial conclusions so as to provide a new idea for solving similar problems.
The inverted arc is an important part of the tunnel lining structure and can improve the bearing capability of tunnel structure.The previous researches analyzed the role played by the inverted arch mainly via the range of plastic zone,stress and displacement.This paper based on strength reduction finite element method(FEM) compares and analyzes the influence of the inverted arch on the safety factor of the whole large-span flat tunnel under different geological conditions and has drawn some beneficial conclusions so as to provide a new idea for solving similar problems.
引文
[1]重庆交通科研设计院.JTG D70—2004公路隧道设计规范[S].北京:人民交通出版社,2004.
[2]罗成,章继树.特大断面公路隧道仰拱受力机理分析[J].现代隧道技术,2006(增):225-228.
[3]宋飞,成铭.基于隧道荷载模式的仰拱力学分析[J].现代隧道技术,2006(增):192-194.
[4]李明,陈洪凯,叶四桥.公路隧道仰拱力学行为的数值模拟研究[C]//2007年全国公路隧道学术会议论文集.重庆:重庆大学出版社,2007.165?170.
[5]郑颖人,胡文清,王敬林.强度折减有限元法及其在隧道与地下洞室工程中的应用[J].现代隧道技术,2004(增):239-243.
[6]郑颖人,赵尚毅.岩土工程极限分析有限元法及其应用[J].土木工程学报,2005,38(1):91?104.
[7]郑颖人,赵尚毅,邓楚键,等.有限元极限分析法发展及其在岩土工程中的应用[J].中国工程科学,2006,8(12):39-61.
[8]Griffiths D V,lane P A.Slope stability analysis by finiteelements[J].Geotechnique,1999,49(3):387-403.
[9]Dawson E M.Roth,W H,Drescher A.Slope stabilityanalysis by strength reduction[J].Geotechnique,1999,49(6):835-840.
[10]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343-346.
[11]赵尚毅,郑颖人,邓卫东.用有限元强度折减法进行节理岩质边坡稳定性分析[J].岩石力学与工程学报,2003,22(2):254-260.
[12]郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报,2004,23(19):381-388.
[13]Ugai K.A method of calculation of total safety factor ofslopes by elastoplastic FEM[J].Soils and Foundations,1989,29(2):190-195.
[14]孙广忠.地质工程理论与实践[M].北京:地震出版社,1996.
[15]朱焕春,李浩.论岩体构造应力[J].水利学报,2001(9):81-85.
[2]罗成,章继树.特大断面公路隧道仰拱受力机理分析[J].现代隧道技术,2006(增):225-228.
[3]宋飞,成铭.基于隧道荷载模式的仰拱力学分析[J].现代隧道技术,2006(增):192-194.
[4]李明,陈洪凯,叶四桥.公路隧道仰拱力学行为的数值模拟研究[C]//2007年全国公路隧道学术会议论文集.重庆:重庆大学出版社,2007.165?170.
[5]郑颖人,胡文清,王敬林.强度折减有限元法及其在隧道与地下洞室工程中的应用[J].现代隧道技术,2004(增):239-243.
[6]郑颖人,赵尚毅.岩土工程极限分析有限元法及其应用[J].土木工程学报,2005,38(1):91?104.
[7]郑颖人,赵尚毅,邓楚键,等.有限元极限分析法发展及其在岩土工程中的应用[J].中国工程科学,2006,8(12):39-61.
[8]Griffiths D V,lane P A.Slope stability analysis by finiteelements[J].Geotechnique,1999,49(3):387-403.
[9]Dawson E M.Roth,W H,Drescher A.Slope stabilityanalysis by strength reduction[J].Geotechnique,1999,49(6):835-840.
[10]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343-346.
[11]赵尚毅,郑颖人,邓卫东.用有限元强度折减法进行节理岩质边坡稳定性分析[J].岩石力学与工程学报,2003,22(2):254-260.
[12]郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报,2004,23(19):381-388.
[13]Ugai K.A method of calculation of total safety factor ofslopes by elastoplastic FEM[J].Soils and Foundations,1989,29(2):190-195.
[14]孙广忠.地质工程理论与实践[M].北京:地震出版社,1996.
[15]朱焕春,李浩.论岩体构造应力[J].水利学报,2001(9):81-85.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心