[1]王晨光,张元海.几何特性对薄壁箱梁畸变效应的影响[J].东南大学学报(自然科学版),2020,50(1):89-95.[doi:10.3969/j.issn.1001-0505.2020.01.012]
 Wang Chenguang,Zhang Yuanhai.Influence of geometric characteristics on distortion effect of thin-walled box girders[J].Journal of Southeast University (Natural Science Edition),2020,50(1):89-95.[doi:10.3969/j.issn.1001-0505.2020.01.012]
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几何特性对薄壁箱梁畸变效应的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
50
期数:
2020年第1期
页码:
89-95
栏目:
交通运输工程
出版日期:
2020-01-13

文章信息/Info

Title:
Influence of geometric characteristics on distortion effect of thin-walled box girders
作者:
王晨光张元海
兰州交通大学土木工程学院, 兰州 730070
Author(s):
Wang Chenguang Zhang Yuanhai
School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
关键词:
箱形梁 畸变效应 能量变分法 几何特性
Keywords:
box girder distortion effect energy variation method geometric characteristic
分类号:
U448.213
DOI:
10.3969/j.issn.1001-0505.2020.01.012
摘要:
为了寻找能够直观反映箱形梁畸变效应的几何特性,应用能量变分法建立了单箱单室箱形梁的畸变控制微分方程,得出了综合反映箱形梁畸变效应的畸变几何特性参数λ.通过数值算例,详细分析了几何特性对简支箱形梁畸变效应的影响.结果表明,解析理论计算所得畸变翘曲应力与有限元法计算所得结果相近.随着跨高比的增加,箱形梁跨中横截面上的畸变矩保持不变,而畸变双力矩呈现出先减小后增大的趋势.当λ较小时,畸变内力降低幅度较大;λ逐渐增大时,畸变内力的降低幅度减小,且在远离荷载作用处以较快的速度衰减.几何特性λ随着梁高的增大而逐渐减小,随着箱壁厚度的增大基本呈线性增大.
Abstract:
In order to find the geometric characteristics directly reflecting the distortion effect of a box girder, the distortion control differential equation of a single-cell box girder was established by using the energy variation method, and the distortion geometric characteristic parameter λ, which comprehensively reflects the distortion effect of the box girder, was obtained. Through the numerical examples, the influence of geometric characteristic on the distortion effect of the box girder was analyzed. The results show that the distortion warping stresses obtained by the analytical method are in good agreement with those calculated by the finite element method. With the increase of the span height ratio, the distortion moment on the middle cross section remains unchanged, while the distortion bimoment shows a trend of decreasing at first and then increasing. When λ is small, the distortion internal forces reduce largely. When λ increases gradually, the speed of reduction decreases, and the distortion internal forces away from the load decay rapidly. The geometric characteristic λ decreases with the increase of the girder’s height, and basically increases linearly with the increase of the box wall’s thickness.

参考文献/References:

[1] 项海帆.高等桥梁结构理论[M].北京:人民交通出版社,2013:1-20.
[2] 蔺鹏臻,孙理想,冀伟,等.时速250 km/h铁路双线箱梁的畸变效应研究[J].铁道科学与工程学报,2016,13(4):595-599. DOI:10.3969/j.issn.1672-7029.2016.04.001.
Lin P Z, Sun L X, Ji W, et al. Distortion effect of double track railway box girders with speed of 250 km/H[J]. Journal of Railway Science and Engineering, 2016, 13(4): 595-599. DOI:10.3969/j.issn.1672-7029.2016.04.001. (in Chinese)
[3] 周旺保,蒋丽忠,李书进,等.负弯矩作用下钢-混凝土组合箱梁畸变屈曲分析[J].华南理工大学学报(自然科学版),2015,43(2):75-80, 95. DOI:10.3969/j.issn.1000-565X.2015.02.011.
Zhou W B, Jiang L Z, Li S J, et al. Distortional buckling analysis of steel-concrete composite box beams under negative moment[J]. Journal of South China University of Technology(Natural Science Edition), 2015, 43(2): 75-80, 95. DOI:10.3969/j.issn.1000-565X.2015.02.011. (in Chinese)
[4] 钱若霖,苏佩,邬晓光.考虑畸变变位的多梁式小箱梁桥横向分布计算[J].铁道科学与工程学报,2018,15(9):2270-2275. DOI:10.19713/j.cnki.43-1423/u.2018.09.013.
Qian R L, Su P, Wu X G. Calculation method of transverse distribution of multi-beam small box girder bridge with distorted displacement[J]. Journal of Railway Science and Engineering, 2018, 15(9): 2270-2275. DOI:10.19713/j.cnki.43-1423/u.2018.09.013. (in Chinese)
[5] 徐勋,叶华文,强士中.带悬臂板薄壁箱梁的扭转和畸变分析[J].铁道学报,2015,37(10):83-91. DOI:10.3969/j.issn.1001-8360.2015.10.012.
Xu X, Ye H W, Qiang S Z. Torsion and distortion analysis of thin-walled box girder with cantilever flanges[J]. Journal of the China Railway Society, 2015, 37(10): 83-91. DOI:10.3969/j.issn.1001-8360.2015.10.012. (in Chinese)
[6] Recupero A, Granata M F, Culotta G, et al. Interaction between longitudinal shear and transverse bending in prestressed concrete box girders[J]. Journal of Bridge Engineering, 2017, 22(1): 04016107. DOI:10.1061/(asce)be.1943-5592.0000990.
[7] Koleková Y, Kovácˇ M, Balá? I. Influence lines of bridges with box-girder cross-section under torsion and distortion[J]. Procedia Engineering, 2017, 190: 603-610. DOI:10.1016/j.proeng.2017.05.386.
[8] Cambronero-Barrientos F, Díaz-Del-Valle J, Martínez-Martínez J. Beam element for thin-walled beams with torsion, distortion, and shear lag[J]. Engineering Structures, 2017, 143: 571-588. DOI:10.1016/j.engstruct.2017.04.020.
[9] Yoo C H, Kang J, Kim K. Stresses due to distortion on horizontally curved tub-girders[J]. Engineering Structures, 2015, 87: 70-85. DOI:10.1016/j.engstruct.2015.01.011.
[10] Ren Y Z, Cheng W M, Wang Y Q, et al. Analysis of the distortion of cantilever box girder with inner flexible diaphragms using initial parameter method[J].Thin-Walled Structures, 2017, 117: 140-154. DOI:10.1016/j.tws.2017.04.010.
[11] Chidolue C A, Amadou A, Ezeagu C A. Torsional- distortional performance of multi-cell trapezoidal box girder with all inclined web members[J]. Journal of Engineering Research and Applications, 2015, 5(2): 45-51.
[12] 张元海,王晨光,林丽霞.箱形梁布置双层悬臂板时的畸变效应分析[J].中国公路学报,2016,29(6):214-220. DOI:10.19721/j.cnki.1001-7372.2016.06.007.
Zhang Y H, Wang C G, Lin L X. Distortion effect analysis of box girders with double-level cantilever slab[J]. China Journal of Highway and Transport, 2016, 29(6): 214-220. DOI:10.19721/j.cnki.1001-7372.2016.06.007. (in Chinese)
[13] Wright R N, Abdel-Samad S R, Robinson A R. BEF analogy for analysis of box girder bridges[J]. Journal of Structural Division, 1968, 94(7): 1719-1743.
[14] 李立峰,周聪,王连华,等.基于纽玛克法的变截面波形钢腹板组合箱梁畸变效应分析[J].中国公路学报,2018,31(6):217-226.
  Li L F, Zhou C, Wang L H, et al. Analysis on distortion effect of non-prismatic composite box girders with corrugated steel webs based on newmark method[J]. China Journal of Highway and Transport, 2018, 31(6): 217-226.(in Chinese)

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备注/Memo

备注/Memo:
收稿日期: 2019-05-06.
作者简介: 王晨光(1992—),男,博士生; 张元海(联系人),男,博士,教授,博士生导师,zyh17012@163.com.
基金项目: 国家自然科学基金资助项目(51468032,51968040)、兰州交通大学青年基金资助项目(1200060824).
引用本文: 王晨光,张元海.几何特性对薄壁箱梁畸变效应的影响[J].东南大学学报(自然科学版),2020,50(1):89-95. DOI:10.3969/j.issn.1001-0505.2020.01.012.
更新日期/Last Update: 2020-01-20