|本期目录/Table of Contents|

[1]卢海林,南子俊,张 伟.移动荷载作用下曲线箱梁剪力滞效应[J].武汉工程大学学报,2015,37(05):23-27.[doi:0. 3969/j. issn. 1674-2869. 2015. 05. 005]
 ,Shear lag effect of curved box- girder under moving load[J].Journal of Wuhan Institute of Technology,2015,37(05):23-27.[doi:0. 3969/j. issn. 1674-2869. 2015. 05. 005]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
37
期数:
2015年05期
页码:
23-27
栏目:
资源与土木工程
出版日期:
2015-05-31

文章信息/Info

Title:
Shear lag effect of curved box- girder under moving load
文章编号:
1674-2869(2015)05-0023-05
作者:
卢海林南子俊张 伟
武汉工程大学资源与土木工程学院,湖北 武汉 430074
Author(s):
LU Hai-linNAN Zi-junZHANG Wei
School of Resource and Civil Engineering,Wuhan Institute of Technology,Wuhan 430074,China
关键词:
曲线箱梁剪力滞移动荷载有限元
Keywords:
curved box girdershear lagmoving loadfinite element
分类号:
U448.42
DOI:
0. 3969/j. issn. 1674-2869. 2015. 05. 005
文献标志码:
A
摘要:
采用大型通用有限元软件ANSYS分析了移动荷载作用下曲线箱梁的剪力滞效应. 分别设置了3种不同大小的移动荷载和3个不同的作用位置,研究了荷载移动到曲线箱梁L/2跨时该截面的剪力滞效应分布情况. 结果表明:荷载沿箱梁中心线移动时,截面内外侧剪力滞效应分布不均匀;荷载沿外侧腹板移动时,外侧腹板处正剪力滞现象明显,内侧腹板以及翼缘板上负剪力滞现象明显;荷载沿内侧腹板移动时,内侧腹板处正剪力滞现象明显,外侧腹板以及翼缘板上负剪力滞现象明显. 移动荷载大小的改变,对曲线箱梁剪力滞效应的分布情况影响较小. 但随着移动荷载的加大,局部剪力滞效应会少量地增大.
Abstract:
Large general-purpose software ANSYS was adopted to analyze the shear lag effect of curved box-girder under the moving load. Three different sizes of moving loads and three different positions were set to investigate the distribution of shear lag effect of the cross-section when the loads moved to the mid-span of curved box-girder. The results show that the distribution of shear lag effect of both inside and outside section is uneven when the loads move along the box-girder midline; the phenomenon of positive shear lag is obvious at the outside web, the phenomenon of negative shear lag is obvious at the inside web and flange plate when the loads move along the outside web; the phenomenon of positive shear lag is obvious at the inside web, the phenomenon of negative shear lag is obvious at the web and flange plate when the loads move along the inside web. The change of the size of moving load has w influences on the distribution of shear lag effect of curved box-girder. But the partial shear lag effect increases slightly with the increase of moving load.

参考文献/References:

[1] 卢海林. 预应力混凝土曲线箱梁剪力滞效应理论分析与试验分析[D]. 天津:天津大学,2005.LU Hai?鄄lin. Theoretical analysis and experimental study on shear-lag effect of prestress concrete curved box beam[D]. Tianjin: Tianjin University,2005. (in Chinese)[2] FABRIZIO Gara, GRAZIANO Leoni, LUIGINO Dezi. A beam finite element including shear lag effect for the time?鄄dependent analysis of steel?鄄concrete composite decks[J].Engineering Structures,2009,31:1888-1902.[3] 陈鸿鸣,乔静宇. 混凝土箱梁剪力滞研究现状与发展[J]. 结构工程师,2011,27(1):161-166.CHEN Hong-ming, QIAO Jing-yu. State of the art about shear lag effect of concrete box girder bridges[J]. Structural Engineering,2011,27(1):161-166. (in Chinese)[4] 刘健新,马麟,胡庆安.薄壁箱梁振动时的剪力滞效应[J].郑州大学学报,2008,29(3):122-128.LIU Jian-xin, MA Lin, HU Qing-an. The research of analysis method of shear lag's effect on forced vibration of thin-wall box-girder[J]. Journal of Zhengzhou University, 2008, 29(3): 122-128. (in Chinese)[5] 徐勋,卫星,刘德军,等.扁平曲线箱梁静动力分析[J].公路交通科技,2007,24(12):60-65.XU Xun, WEI Xing, LIU De-jun,et al. Analysis for static and dynamic characteristics of flat curved box beam[J]. Journal of Highway and Transportation Research and Development,2007,24(12):60-65. (in Chinese)[6] 蔡汶珊. 薄壁曲线箱梁剪力滞数值计算与实验研究[D]. 长沙:长沙理工大学,2010.CAI Wen-shan. Numerical calculate and experimental research about shear lag effect of curved thin wall box girders[D]. Changsha: Changsha University of Science & Technology, 2010. (in Chinese)[7] 卢海林,张伟,颜昌雄. 移动荷载速度对悬臂曲线箱梁剪力滞效应的影响[J]. 武汉工程大学学报,2014,36(3):18-21.LU Hai-lin, ZHANG Wei, YAN Chang-xiong. Moving load speed on shear lag effect of cantilever curved box girder[J]. Journal of Wuhan Institute of Technology,2014,36(3):18-21. (in Chinese)[8] HUGO C Gomeza,PAUL J Fanning,MARIA Q Fenga, et al. Testing and long?鄄term monitoring of a curved concrete box girder bridge[J]. Engineering Structure,2011(33):2861-2869.[9] 王新敏. ANSYS工程结构数值分析[M]. 北京:人民交通出版社,2007.WANG Xin-min. ANSYS numerical analysis of engineering structural[M]. Beijing: China Communications Press, 2007. (in Chinese)[10] 李洪. 曲线连续箱梁桥梁剪力滞效应分析及实用计算[D]. 北京:北京交通大学,2010.LI Hong. Analysis of the shear lag effect in curved continuous box-girder bridge and the research on practical calculating method[D].Beijing:Beijing Jiaotong University,2010. (in Chinese)[11] 赵云安,王炎. 车辆荷载作用下连续箱梁桥剪力滞效应分析[J]. 铁道建筑,2013(2):9-11.ZHAO Yun-an, WANG Yan. Analysis of the shear lag effect in curved continuous box-girder bridge under the vehicle load[J]. Railway Engineering,2013,(2):9-11. (in Chinese)

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备注/Memo

备注/Memo:
收稿日期:2015-03-23基金项目:国家自然科学基金(51378404);武汉工程大学研究生教育创新基金(CX2013115).作者简介:卢海林(1965-),男,湖南安乡人,教授,博士. 研究方向:桥梁结构分析尧建筑结构检测与加固.
更新日期/Last Update: 2015-07-01