摘要
根据贝雷桁架特点,建立考虑次内力的贝雷桁架有限元模型,以某大桥施工贝雷桁架挂篮为例,分别进行简化计算和有限元数值模拟,并进行对比分析。分析表明,竖杆和受集中力作用弦杆的次内力影响不能忽略。
In the light of the characteristics of the Bailey truss, this paper sets up a finite element model for the truss that considers the secondary internal force. By way of example of a practical Bailey truss form traveler used for construction of a bridge, the paper respectively makes the simplified calculation, finite element numerical simulation and also the comparative analysis of the calculation and simulation. The results of the analysis show that the influences of the secondary internal forces of the vertical members and the chords subjected to the concentrated load can not be ignored.
出处
《世界桥梁》
北大核心
2009年第1期43-45,共3页
World Bridges
关键词
贝雷桁架
次应力
有限元分析
bailey truss
secondary stress
finite element analysis
