# [1]张玉元,张元海,张慧.梁端约束条件对箱形梁剪力滞效应的影响[J].东南大学学报(自然科学版),2018,48(4):671-677.[doi:10.3969/j.issn.1001-0505.2018.04.012] 　Zhang Yuyuan,Zhang Yuanhai,Zhang Hui.Influence of end restraint condition on shear lag effect of box girder[J].Journal of Southeast University (Natural Science Edition),2018,48(4):671-677.[doi:10.3969/j.issn.1001-0505.2018.04.012] 点击复制 梁端约束条件对箱形梁剪力滞效应的影响() 分享到： var jiathis_config = { data_track_clickback: true };

48

2018年第4期

671-677

2018-07-20

## 文章信息/Info

Title:
Influence of end restraint condition on shear lag effect of box girder

Author(s):
School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Keywords:

U448.213
DOI:
10.3969/j.issn.1001-0505.2018.04.012

Abstract:
In order to reveal the influence of end restraint condition on the shear lag effect of box girder, the additional deflection induced by shear lag effect was chosen as a generalized displacement. Three modification factors of the shear lag warping displacement were introduced for the cross section. The governing differential equation and the corresponding boundary condition were established by applying the energy variation method. The analytical solution to the additional deflection and shear lag coefficient for different end restraint conditions were derived under the uniform force. Combined with numerical examples, the influence of end restraint condition on the additional deflection and shear lag coefficient was analyzed in detail. Numerical examples show that the calculation results in the present method are in a good agreement with those by the finite element method. The stronger the end restraint condition, the steeper the shear lag coefficient distribution curve, but the longitudinal distribution curve of additional deflection is more flat. The longitudinal distribution of shear lag coefficient of the positive and negative moment areas is similar to that of the simple supported and cantilever box girder. Compared with the simply supported box girder, the shear lag coefficients of the one end fixed and the other end simply supported and the fixed-ends box girder are increased by 12.86% and 25.63% at the intersection of upper wing flanges and webs with mid-span section, respectively. The additional deflections at the mid-span section are decreased by 13.79% and 25.60%, respectively.

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## 相似文献/References:

[1]李夏元,万水,陈建兵,等.基于修正翘曲位移函数的薄壁箱梁剪力滞效应分析[J].东南大学学报(自然科学版),2018,48(5):851.[doi:10.3969/j.issn.1001-0505.2018.05.011]
Li Xiayuan,Wan Shui,Chen Jianbing,et al.Analysis on shear lag effect in thin-walled box girders based on modified warping displacement function[J].Journal of Southeast University (Natural Science Edition),2018,48(4):851.[doi:10.3969/j.issn.1001-0505.2018.05.011]