构造正交异性桥面板空间计算的等效梁格解法  

Equivalent beam grillage solution for the calculation of orthotropic bridge deck

作　　者：骆佐龙 宋一凡[1] 贺拴海[1] 

机构地区：[1]长安大学公路学院,陕西西安710064

出　　处：《合肥工业大学学报（自然科学版）》2014年第7期850-854,共5页Journal of Hefei University of Technology：Natural Science

基　　金：交通运输部西部交通建设科技资助项目(2011812318970);中央高校基本科研业务费专项资金资助项目(CHD2012JC001)

摘　　要：由于2个方向的力学特征不同,构造正交异性桥面板计算比较复杂。为简化计算,文章提出一种构造正交异性桥面板计算的等效梁格解法。纵向等效梁格按照与原结构横截面中性轴位置、抗弯刚度、截面面积等效的原则,并且充分考虑横肋板对纵向抗弯刚度的影响,通过理论分析得到等效截面各部分尺寸参数的计算公式。横向梁格截面尺寸按照原结构横肋板的实际尺寸给出。对某一构造正交异性桥面板的局部稳定性进行研究,结果表明,等效梁格解法能够反映原结构的实际状态,得出的各等效参数真实可靠,对简化构造正交异性桥面板计算方法具有参考价值。T he calculation method of orthotropic bridge deck is complex for the different dynamic characteristics in two directions .To simplify the calculation ,an equivalent beam grillage method is put forward .According to the principle of the same position of neutral axis ,the same bending stiffness and the same cross-section area as the actual section and fully considering the influence of the cross rib plate on the longitudinal bending stiffness ,the theoretical formula for the cross-section size of each part of the longitudinal equivalent beam grillage is obtained .The size of transverse equivalent beam grillage is given according to the size of the cross rib plate .The local stability of an orthotropic bridge deck is studied and the results show that the proposed equivalent method can reflect the actual status of the actual structure and the equivalent parameters are reliable .T he equivalent method has reference value for simplifying the calculation method of the orthotropic bridge deck .

关 键 词：构造正交异性桥面板 等效梁格 屈曲临界荷载系数 局部稳定性 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]