|
|||||
|
|
| 变截面箱梁剪力滞及剪切变形效应近似计算方法 | |
| 引用本文： | 丁南宏,林丽霞,钱永久.变截面箱梁剪力滞及剪切变形效应近似计算方法[J].铁道科学与工程学报,2011,8(1):14-18. |
| 作者姓名： | 丁南宏 林丽霞 钱永久 |
| 作者单位： | 1. 兰州交通大学,土木工程学院,甘肃,兰州,730070;西南交通大学,土木工程学院,四川,成都,610031 2. 兰州交通大学,土木工程学院,甘肃,兰州,730070 3. 西南交通大学,土木工程学院,四川,成都,610031 |
| 基金项目： | 甘肃省自然科学基金资助项目(2008GS02604); 兰州交通大学“青蓝”基金项目(QL-05-13A) |
| 摘 要： | 变截面箱梁因其抗弯刚度沿梁轴向变化,通常采用有限元法分析,本文基于等效刚度及等效刚度比法,提出了一种可同时考虑剪力滞效应及剪切变形效应的,适用于手算的变截面箱梁荷载作用下挠度及剪滞系数的近似计算方法.通过一变截面悬臂箱梁算例分析,与初等梁理论计算结果进行了比较.结果表明:不考虑剪力滞效应及剪切变形效应将使得挠度计算结果... |
| 关 键 词： | 箱形梁 剪力滞效应 剪切变形 变截面箱梁 |
An approximate method to analyze the effect of shear lag and shear deformation of box beam with varying depth |
|
| DING Nan-hong , LIN Li-xia , QIAN Yong-jiu.An approximate method to analyze the effect of shear lag and shear deformation of box beam with varying depth[J].Journal of Railway Science and Engineering,2011,8(1):14-18. | |
| Authors: | DING Nan-hong LIN Li-xia QIAN Yong-jiu |
| Institution: | DING Nan-hong1,2,LIN Li-xia1,QIAN Yong-jiu2(1.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China,2.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
| Abstract: | Since the change of bending stiffness along its axid,the finite element method was usually used to analysis box beam with varying depth.Based on the equivalent stiffness and equivalent stiffness ratio method,an approximate method suitable for hand calculation was proposed to calculate the vertical displacement and shear lag coefficient of box beam with varying depth bearing load,in which,the double effects of shear lag and shear deformation can be taken into account.It shows that the vertical displacement c... |
| Keywords: | box beam shear lag effect shear deformation box beam with varying depth |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |