变高度薄壁箱梁剪力滞的几何非线性分析

罗旗帜; 陈玉骥

变高度薄壁箱梁剪力滞的几何非线性分析

基金项目:

国家自然科学基金资助项目(50378019)

广东省自然科学基金资助项目(034066)

详细信息

作者简介:
罗旗帜(1956- ),男,教授,博士,研究方向为土木工程结构理论及其应用,电话:0757-83960023,E-mail:qizhi@fosu.edu.cn

计量
- 文章访问数: 1427
- HTML全文浏览量: 64
- PDF下载量: 307
- 被引次数: 0
出版历程
- 收稿日期: 2006-11-16
- 刊出日期: 2007-10-25

Geometrical Nonlinear Analysis of Thin-Walled Box Girder with Variable Height

摘要

摘要: 根据势能变分原理,考虑薄壁箱梁翼缘的剪力滞效应和结构竖向挠度的几何非线性,导出了变高度薄壁箱梁的非线性控制微分方程,并采用样条最小二乘配点法进行求解.将计算值与试验结果进行了比较,两者吻合较好.研究表明,对于三跨变高度薄壁连续箱梁,在均布荷载作用下,内支座截面的应力分布不均匀程度较中跨跨中截面大;荷载越大,非线性效应越显著.
- 变高度薄壁箱梁 /
- 剪力滞效应 /
- 几何非线性 /
- 样条函数
Abstract: Based on the variation principle of potential energy and considering the shear lag effect of stresses on flanges and the geometrical nonlinearity of vertical deflection of structures,the nonlinear governing differential equation was derived and solved by using the spline least square collocation method for thin-walled box girder with a variable height.The numerical simulation results are in good agreement with those obtained from experiments.The research shows that the distribution of stresses at the inner support is more uneven than that in the middle section of the middle span for a three-span continuous thin-walled box girder with a variable height under uniform distributed loads,and the nonlinear effectiveness becomes more obvious with the increase of load.
- thin-walled box girder with variable height /
- shear lag effect /
- geometrical nonlinearity /
- spline function

HTML全文

参考文献(12)

LUO Qizhi,TANG Jianguo,LI Qiusheng.Finite segment method for shear lag analysis of cable-stayed bridges[J].Journal of Structute Engineering,2002,128 (12):1 617-1 622.

吴幼明,罗旗帜,岳珠峰.薄壁箱梁剪力滞计算的梁段有限元法[J].中国铁道科学,2003,24(4):64-68.WU Youming,LUO Qizhi,YUE Zhufeng.Finite element method for calculating the shear lag in box girders[J].Chian Railway Science,2003,24(4):64-68.

邓戈,金康宁.等截面箱形梁剪力滞效应的变分解法[J].华中科技大学学报:城市科学版,2004,21(2):53-56.DENG Ge,JIN Kangning.Variational method for the shear lag effect in constant section thin wailed box girder[J].Journal of Huazhong University of Science and Technology:Urban Science Edition,2004,21 (2):53-56.

赵川,周亦唐,缪升,等.简支薄壁箱梁剪力滞后效应探讨[J].钢结构,2005,20(3):39-42.ZHAO Chuan,ZHOU Yitang,MIAO Sheng,et al.Discusion on lag-effect of shearing force at simply-supprtted thin-walled box beams[J].Steel Construction,2005,20(3):39-42.

罗旗帜,吴幼明,刘光栋.变高度薄壁箱梁的剪力滞[J].铁道学报,2003,25(5):81-87.LUO Qizhi,WU Youming,LIU Guangdong.Shear lag of the thin-wall box girder with varying depths[J].Journal of the China Railway Society,2003,25(5):81-87.

罗旗帜.变截面多跨箱梁桥剪力滞效应分析[J].中国公路学报,1998,11(1):63-70.LUO Qizhi.Analysis of the shear lag effect on continuous box girder bridges with variable depth[J].China Journal of Highway and Transport,1998,11 (1):63-70.

王修信,黄剑源.变截面多跨梯形箱梁桥剪滞效应差分解[J].桥梁建设,1993(2):58-64.

郑振,谷音.大悬臂变截面箱梁剪力滞效应分析[J].福州大学学报:自然科学版,2001,29(2):62-65.ZHENG Zhen,GU Yin.Analysis of the broad flange beam shear lag[J].Journal of Fuzhou University:Natural Science,2001,29(2):62-65.

魏丽娜,方放,苗学守,等.变截面箱梁桥剪滞效应分析中翼板纵向位移函数的选择[J].桥梁建设,1996(3):28-31.WEI Lina,FANG Fang,MIAO Xueshou,et al.Choice of functions of flange plate longitudinal displacement in shear lag analysis of box girder with variable cross section[J].Bridge Construction,1996(3):28-31.

苏强,吴亚平,杨东涛.几何非线性对箱梁剪力滞后效应的影响[J].兰州交通大学学报:自然科学版,2005,24(3):17-20.SU Qiang,WU Yaping,YANG Dongtao.Influence of geometric nonlinearity to shear lag effect of box beam[J].Journal of Lanzhou Jiaotong University:Natural Sciences,2005,24(3):17-20.

项海帆.高等桥梁结构理论[M].北京:人民交通出版社,2001:50-63.

秦荣.计算结构力学[M].北京:科学出版社,2001:13-16.

施引文献

附加材料(0)

访问统计

点击查看大图

计量

文章访问数: 1427
HTML全文浏览量: 64
PDF下载量: 307
被引次数: 0

变高度薄壁箱梁剪力滞的几何非线性分析

作者简介: 罗旗帜(1956- ),男,教授,博士,研究方向为土木工程结构理论及其应用,电话:0757-83960023,E-mail:qizhi@fosu.edu.cn

计量

出版历程

Geometrical Nonlinear Analysis of Thin-Walled Box Girder with Variable Height

计量

出版历程

目录

作者简介:
罗旗帜(1956- ),男,教授,博士,研究方向为土木工程结构理论及其应用,电话:0757-83960023,E-mail:qizhi@fosu.edu.cn