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钢与混凝土组合箱梁剪力滞效应分析

DOI: 10.3969/j.issn.1005-3026.2015.08.030, PP. 1204-1208

Keywords: 桥梁工程,组合箱梁,能量变分原理,剪力滞效应,翘曲位移函数,剪力滞系数

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Abstract:

根据钢与混凝土组合箱形结构翘曲位移函数设置的基本原理,选择一系列符合组合箱梁基本翘曲模式的抛物线型翘曲位移函数,以最小势能原理为基础,得到利用变分法分析钢与混凝土组合箱梁剪力滞效应的控制微分方程和边界条件,并推导了典型的简支组合箱梁在跨中集中荷载作用下的解析解.静力分析算例结果证明了选择二次抛物线型为翘曲位移函数的合理性和适用性.将解析解与实测结果和有限元计算结果进行比较,证明了本文方法的有效性.基于能量原理得到的计算公式能够满足工程实际的需要,且计算较为简单.

References

[1]  Gara F,Ranzi G,Leoni G.Partial interaction analysis with shear-lag effects of composite bridges:a finite element implementation for design applications[J].Advanced Steel Construction,2011,7(1):1-16.
[2]  Luo Q Z,Li Q S,Tang J.Shear lag in box girder bridges [J].Bridge Engineering,2002,7(5):308-313.
[3]  Zhou S J.Finite beam element considering shear-lag effect in box girder [J]. Mechanical Engineering,2010,136(9):1115-1122.
[4]  Lertsima C,Chaisomphob T,Yamaguchi E.Stress concentration due to shear lag in simply supported box girders [J].Engineering Structures,2004,26(8):1093-1101.
[5]  Zhang Y H,Lin L X.Shear lag analysis of thin-walled box girders based on a new generalized displacement[J].Engineering Structures,2014,61(1):73-83.
[6]  聂建国,李法雄,樊健生,等.钢-混凝土组合梁考虑剪力滞效应实用设计方法[J].工程力学,2011,28(11):45-51.(Nie Jian-guo ,Li Fa-xiong ,Fan Jian-sheng ,et al.Practical design method for steel-concrete composite beam considering shear lag effect [J].Engineering Mechanics,2011,28(11):45-51.)
[7]  蔺鹏臻,周世军,刘凤奎.抛物线型剪滞翘曲位移函数引起的附加轴力分析[J].工程力学,2010,27(8):90-93. (Lin Peng-zhen,Zhou Shi-jun ,Liu Feng-kui.Additional axial force analysis caused by parabolical warping displacement about shear lag[J].Engineering Mechanics,2010,27(8):90-93.)
[8]  Reissner E.Analysis of shear lag in box beams by the principle of minimum potential energy[J].Quarterly of Applied Mathematics,1946,5(3):268-278.
[9]  Chang S T.Shear lag effect in simply supported prestressed concrete box girder[J].Journal of bridge Engineering,2004,9(2):178-184.
[10]  李平.钢-混凝土组合箱梁剪力滞效应的试验研究[D].苏州:苏州科技学院,2009.(Li Ping.Experimental research of steel-concrete composite box beam shear lag effect[D].Suzhou:Suzhou University of Science and Technology,2009.)

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