不同特征值作用下桥面板屈曲分析  

ANALYSIS OF BRIDGE DECK BUCKLING UNDER DIFFERENT EIGENVALUES

作　　者：刘殿忠[1] 李红现 LIU Dianzhong;LI Hongxian(College of Civil Engineering,Jilin Jianzhu University,Changchun 130118,China)

机构地区：[1]吉林建筑大学土木工程学院,长春130118

出　　处：《低温建筑技术》2020年第3期70-72,105,共4页Low Temperature Architecture Technology

摘　　要：利用ABAQUS有限元软件,对桥面板进行建模分析,文中建模分析所用材料为钢材制作而成的桥面板,针对在不同特征值作用下的变形图,应力云图进行对比分析。模拟分析以第一特征值和第二特征值作用下的变形图及应力云图为例进行简单对比分析,对桥面板的屈曲稳定特性,主要包括弹性屈曲应力和弹塑性屈曲应力,进行力学分析及理论计算阐述,利用模拟得出的结果与理论公式进行验证,证明了在不同特征值作用下,桥面板的屈曲力学性能也不相同。最后介绍了各种不同因素对桥面板承载力的影响,除了自身材料及结构形式对桥面板有直接影响之外,外部条件下的荷载也会对桥面板的承载力产生较大的影响。Using ABAQUS finite element software, the bridge deck is modeled and analyzed. The deformation map and stress cloud map under different eigenvalues are obtained. This simulation analysis uses the first eigenvalue and the second eigenvalue as an example to make a simple comparative analysis of the deformation map and stress cloud diagram. The buckling stability characteristics of the bridge deck mainly include elastic buckling stress and elastoplastic buckling stress. The simulation results and theoretical formulas are used to verify that the buckling mechanical properties of the bridge deck are different under different eigenvalues. Finally, the effects of various factors on the bearing capacity of the bridge deck are introduced. In addition to the direct influence of the material and structural form on the bridge deck, the load under external conditions will also have a greater impact on the bearing capacity of the bridge deck.

关 键 词：桥面板 特征值 弹性屈曲 弹塑性屈曲 

分 类 号：TU375[建筑科学—结构工程]