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浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
基于不同抛物线翘曲函数组合箱梁剪力滞
何余良,项贻强,李少俊,刘丽思
浙江大学 建筑工程学院,浙江 杭州 310058
Analysis on shear-lag effect of composite girders based on different parabolic warping displacement function
HE Yu-liang, XIANG Yi-qiang, LI Shao-jun, LIU Li-si
College of Civil Engineering and Architecture,Zhejiang University, Hangzhou 310058, China
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摘要：

为了建立一个能够同时考虑界面滑移、剪切变形和剪力滞三重效应的组合箱梁分析理论模型，在该理论模型中，基于Newmark组合梁滑移模型引入不同幂次抛物线翘曲函数描述组合箱梁顶底板应力横向非均匀分布，推导了简支组合箱梁在均布荷载和集中荷载作用下的解析解.采用试验验证了理论模型和解析解的正确性.参数分析结果表明，随着混凝土板厚和钢梁高度的增加，在跨中腹板和顶板中部处剪力滞系数下降；当宽跨比减少时，在腹板处剪力滞系数下降，在顶板中部处剪力滞系数略增加；与均布荷载相比，集中荷载对跨中截面的剪力滞系数影响较明显；由推导公式的计算结果表明，可以忽略滑移刚度变化对剪力滞系数影响.
Abstract:

A theory model was proposed for steel-concrete composite girders with considering the slip between the steel beam and concrete slab, shear deformation in the steel beam and the shear lag effect in the concrete slab. Different parabolic warping shape function accounting for the non-uniform transverse distribution of longitudinal displacements in the concrete slab and steel floor and transverse shear deformation of the girder web were introduced into the Newmark's model of the theory. Then analytical solutions for the simply supported composite girder under the uniform distribution load and concentrated load are derived. The theory model and the correctness of the analytical solution were verified by the results obtained on the model experimental study. Further analysis results of the parameters show that the shear lag coefficients in the concrete flange plate on the web and between two webs in the mid-span section decrease with increasing thickness of concrete flange plate and depth of steel beam. the shear lag coefficient in the concrete flange plate on the web decreases with decline of the ratio of width and span for composite girder and the shear lag coefficient in the center between two webs in the mid-span section increases with it. Compared with the case under the uniform distribution load, the shear lag effect in the mid-span section is more significant under concentrated load for composite girder. The variation of the slip stiffness has a negligible effect to the shear lag coefficient.
出版日期: 2014-11-01
:  TU 375  
通讯作者: 项贻强, 男, 教授, 博导     E-mail: xiangyiq@zju.edu.cn
作者简介: 何余良（1977-）， 男， 博士生，主要从事钢-混凝土组合结构的研究.E-mail:hyliang88888@163.com
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引用本文:

何余良,项贻强,李少俊,刘丽思. 基于不同抛物线翘曲函数组合箱梁剪力滞[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.11.004.

HE Yu-liang, XIANG Yi-qiang, LI Shao-jun, LIU Li-si. Analysis on shear-lag effect of composite girders based on different parabolic warping displacement function. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.11.004.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.11.004    或    http://www.zjujournals.com/eng/CN/Y2014/V48/I11/1933

［1］ 孙飞飞,李国强. 考虑滑移、剪力滞后和剪切变形的钢-混凝土组合梁解析解［J］. 工程力学, 2005, 22(2):18．
SUN Fei-fei, LI Guo-qiang. A closed-form solution for steel-concrete composite beams with slip, shear lag and shear deformation ［J］. Engineering Mechanics, 2005, 22(2): 18．
［2］ SUN F F, BURSI O S.A displacement-based formulation for steel-concrete composite beams with shear lag［C］∥Computational Modelling of Concrete Structures. Lisse:Balkema,2002: 827-838．
［3］ NEWMARK N M,SEISS C P,VIEST I M.Test and analysis of composite beams with incomplete interaction ［C］∥ Proc.Society for Experimental Stress Analysis.New York: \[s.n.\],1951, 9(1):75-92．
［4］ 李法雄,聂建国.钢-混凝土组合梁剪力滞效应弹性解析解［J］. 工程力学,2011, 28(9): 96-103．
LI Fa-xiong, NIE Jian-guo. Elastic analytical solutions of shear lag effect of steel-concrete composite beam ［J］. Engineering Mechanics, 2011, 28(9): 96-103．
［5］ 张彦玲, 李运生, 季文玉. 简支组合箱梁在横向对称荷载作用下的解析解及剪力滞研究［J］. 石家庄铁道学院学报：自然科学版, 2009, 22(01): 5-14．
ZHANG Yan-ling, LI Yun-sheng, JI Wen-yu. A closed-form solution of load effect and study of shear lag effect for simple steel concrete composite box beam ［J］. Journal of Shijiazhuang Railway Institute:Natural Science, 2009, 22(01):5-14．
［6］ ADEKOLA A O. On shear lag effects in orthotropic composite beams［J］. International Journal of Solids Structures, 1974, 10(4): 735-754．
［7］ GJELSVIK A. Analog-beam method for determining shear-lag effects ［J］. Journal of Engineering Mechanics-ASCE, 1991, 117(7): 1575-1594．
［8］ DEZI L, GARA F, LEONI G. Time-dependent analysis of shear-lag effect in composite beams［J］. Journal of Engineering Mechanics-ASCE, 2001, 127(1): 71-79．
［9］ 张士铎,邓小华,王文州.箱形薄壁梁剪力滞效应［M］. 1版. 北京: 人民交通出版社,1998.
［10］ 蔺鹏臻,周世军. 基于剪切变形规律的箱梁剪力滞效应研究［J］.铁道学报, 2011, 33(4): 100-104．
LIN Peng-zhen, ZHOU Shi-jun. Analysis on shear-lag effect of box girders based on flange-slab shear deformation law ［J］. Journal of the China Railway Society, 2011, 33(4):100104．
［11］ 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): 90-94．
LIN Peng-zhen, ZHOU Shi-jun, LIU Feng-kui. Additional axial force analysis caused by parabolic warping displacement about shear lag ［J］. Engineering Mechanics, 2010, 27(8):90-94．
［12］ 蒋丽忠,余志武,李佳.均布荷载作用下钢-混凝土组合梁滑移及变形的理论计算［J］. 工程力学,2003, 20(2): 133-137．
JIANG Li-zhong, YU Zhi-wu, LI Jia. the theoretical calculation of The deformation and slippage about Steel-concrete composite beams under Uniform load ［J］. Engineering Mechanics, 2003, 20(2):133-137．
［13］ GB50017-2012.钢结构设计规范［S］.北京：中国建筑工业出版社，2012．
GB50017-2012. Code for design of steel structures\[S\].Beijing:China Building Industry press,2012．
［14］ 项贻强.梯形截面箱梁桥剪力滞效应的分析及其试验研究［D］.长沙：湖南大学,1985.
XIANG Yi-qiang. Analysis of shear lag effect of box girder bridge with trapezoidal cross-section and its experimental study ［D］. Changsha:Hunan University,1985.
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