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| 连续刚构桥主梁基于势能变分原理的剪力滞效应研究 | |
| 引用本文： | 司徒毅,肖金军,罗旗帜,陈玉骥.连续刚构桥主梁基于势能变分原理的剪力滞效应研究[J].世界桥梁,2011(6):42-45. |
| 作者姓名： | 司徒毅 肖金军 罗旗帜 陈玉骥 |
| 作者单位： | 1. 佛山市公路桥梁工程监测站,广东佛山,528000 2. 湖南大学土木工程学院,湖南长沙410082;佛山科学技术学院土木工程与建筑系,广东 佛山 528000 3. 佛山科学技术学院土木工程与建筑系,广东 佛山,528000 |
| 基金项目： | 国家自然科学基金资助项目(50978058); 全国优秀博士学位论文作者专项资金资助项目(200954); 广东省自然科学基金资助项目(9151063101000050) |
| 摘 要： | 为研究连续刚构桥的剪力滞效应,以单箱双室变截面连续刚构桥为对象,将其主梁简化为弹性支座上的连续梁,根据箱梁变形特征假设剪力滞翘曲函数,得到结构的变形势能,然后由样条函数离散基本位移函数,利用最小势能原理得到结构考虑剪力滞效应和桥墩变形影响的刚度方程,并根据LR分解法求解广义位移,由此确定主梁翼缘的空间应力与相应剪力滞系... |
| 关 键 词： | 连续刚构桥 箱形梁 变截面 剪力滞 势能原理 变分法 |
Study of Shear Lag Effect of Main Girder of Continuous Rigid Frame Bridge Based on Potential Energy Variation Principle |
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| SITU Yi,XIAO Jin-jun,LUO Qi-zhi,CHEN Yu-ji.Study of Shear Lag Effect of Main Girder of Continuous Rigid Frame Bridge Based on Potential Energy Variation Principle[J].World Bridges,2011(6):42-45. | |
| Authors: | SITU Yi XIAO Jin-jun LUO Qi-zhi CHEN Yu-ji |
| Institution: | SITU Yi1,XIAO Jin-jun1,LUO Qi-zhi2,3,CHEN Yu-ji3(1.Foshan City Monitoring Station of Road and Bridge Engineering,Foshan 528000,China,2.College of Civil Engineering,Hunan University,Changsha 410082,3.Department of Civil Engineering and Architecture,Foshan Institute of Science and Technology,China) |
| Abstract: | To study the shear lag effect of main girder of continuous rigid-frame bridge,the two-cell single-box continuous rigid-frame bridge with variable cross section was taken as the object and the main girder of the bridge was simplified as a continuous girder supported on elastic bearings.According to the deformation characteristics of box girders,the warping functions of the shear lag of the main girder were assumed and the deformation potential energy of the structure was obtained.Further according to the spl... |
| Keywords: | continuous rigid-frame bridge box girder variable cross section shear lag potential energy principle variation method |
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