摘要
为确定钢-混凝土组合桥面板在简化计算时单向板与双向板的界限值,采用有限元方法建立了基于弹性理论的分析模型。考虑钢-混凝土组合桥面板中的均布荷载作用效应,对不同边长比下的四边简支钢-混凝土组合桥面板进行研究。结果表明,随着边长比的增大,弯矩和反力沿短边传递的效应越明显;当边长比大于3时,钢-混凝土组合桥面板长边方向的荷载传递和弯矩分配效应均达到或超过总效应的85%;建议在进行弹性理论分析时,以边长比等于3作为四边简支钢-混凝土组合板单、双向的界限值。
In order to specifically define the demarcation between one-way and two-way steel-concrete composite bridge decks for simplifying application,a series of numerical models were established based on the finite element analysis.Uniform loading,varied ratio of side length and simply supported condition were considered to analyze the internal force and reaction. Results show that the load transfer effect to short side varies with the side length ratio and it will be more obvious when the ratio value is higher. When the side length ratio is more than 3,the load transfer and moment distribution in long side is more than 85% of the total effect. Thus,the side length ratio equals to 3 is suggested to determine the demarcation between one-way and two-way deck of steel-concrete composite bridge decks under elastic condition.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2015年第S1期156-160,共5页
Journal of Building Structures
基金
国家自然科学基金项目(51208431)
中央高校基本科研业务费专项资金项目(SWJTU12CX064)
关键词
钢-混凝土组合桥面板
单向板
双向板
有限元分析
区分界限值
steel-concrete composite bridge deck
one-way slab
two-way slab
finite element analysis
demarcation
