混凝土空心板梁桥铰缝刚度折减研究
摘要
对于混凝土空心板梁桥,铰缝起着关键的横向传力作用,其力学性能的正确处理和模拟对于整个空心板梁桥受力分析有重要影响。利用混凝土抗拉强度随裂缝宽度变化模型和混凝土拉伸刚化模型,建立应力相对值和裂缝宽度相对值等变量,推导了铰缝处开裂混凝土的弹性模量(铰缝刚度)与裂缝宽度相对值之间的具体关系式,并给出了铰缝刚度折减系数的列式,实现了铰缝受力性能的正确模拟。同时,给出了不同强度等级的混凝土、不同缝宽对应的刚度折减系数。通过工程实例分析,表明本文研究的铰缝受力分析方法正确,提出的铰缝刚度折减系数具有一定的工程实用价值,结论可供实际工程参考。
引文
[1]王钧利,贺拴海.高墩大跨径弯桥在悬臂施工阶段刚构的非线性稳定分析.交通运输工程学报,2006,6(2):30-34.
[2]Kiyohiro I.,Dan M.F.Geometrically nonlinear finite element reliabilityanalysis of structural systems.I:theory.Computers&Structures,2000,77(6):677-691.
[3]Sritharan S.,Nigel P.M.J.,Frieder S.Nonlinear finite element analy-ses of concrete bridge joint systems subjected to seismic actions.FiniteElements in Analysis and Design,2000,36(3-4):215-233.
[4]Raid K.Some modeling aspects in the nonlinear finite element analysisof cable supported bridges.Computers and Structures,1999,71(4):397-412.
[5]过镇海.钢筋混凝土原理.北京:清华大学出版社,1999.
[6]康清梁.钢筋混凝土有限元分析.北京:中国水利水电出版社,1996.
[7]Zhao Z.Z.,Kwan A.K.H.,He X.G.Nonlinear finite element analysisof deep reinforced concrete coupling beams.Engineering Structures,2004,26(1):13-25.
[8]Guyon Y.The strength of statically indeterminate prestressed concretestructures.Symposium on the Strength of Concrete Strucrures,London,May 1956,Edited by Cement and Concrete Association,London,1958:305-376.
[9]刘小燕,颜东煌,张峰,等.预应力高强混凝土梁极限承载力分析.中国公路学报,2006,19(1):58-61.
[10]王家林.钢筋混凝土结构空间有限元分析的体梁组合单元.工程力学,2002,19(6):131-135.
[11]陈水生,万益春,野田尚昭.隔震桥梁地震响应非线性分析.长安大学学报:自然科学版,2006,26(1):54-58.
[2]Kiyohiro I.,Dan M.F.Geometrically nonlinear finite element reliabilityanalysis of structural systems.I:theory.Computers&Structures,2000,77(6):677-691.
[3]Sritharan S.,Nigel P.M.J.,Frieder S.Nonlinear finite element analy-ses of concrete bridge joint systems subjected to seismic actions.FiniteElements in Analysis and Design,2000,36(3-4):215-233.
[4]Raid K.Some modeling aspects in the nonlinear finite element analysisof cable supported bridges.Computers and Structures,1999,71(4):397-412.
[5]过镇海.钢筋混凝土原理.北京:清华大学出版社,1999.
[6]康清梁.钢筋混凝土有限元分析.北京:中国水利水电出版社,1996.
[7]Zhao Z.Z.,Kwan A.K.H.,He X.G.Nonlinear finite element analysisof deep reinforced concrete coupling beams.Engineering Structures,2004,26(1):13-25.
[8]Guyon Y.The strength of statically indeterminate prestressed concretestructures.Symposium on the Strength of Concrete Strucrures,London,May 1956,Edited by Cement and Concrete Association,London,1958:305-376.
[9]刘小燕,颜东煌,张峰,等.预应力高强混凝土梁极限承载力分析.中国公路学报,2006,19(1):58-61.
[10]王家林.钢筋混凝土结构空间有限元分析的体梁组合单元.工程力学,2002,19(6):131-135.
[11]陈水生,万益春,野田尚昭.隔震桥梁地震响应非线性分析.长安大学学报:自然科学版,2006,26(1):54-58.
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