摘要
以大型钢桁架悬索桥为实例,研究钢桁架加劲梁悬索桥节点处以不同的刚度连接,对桥梁的受力性能影响,对2组具有不同节点刚度的模型,进行了空间有限元计算。分析结果表明:节点连接刚度大小对桥面线形、主缆、吊索拉力分布以及杆件轴力影响很不明显,但对杆件应力分布影响显著,设计时应加以考虑。并根据计算结果提出了同类结构的设计和施工建议。
Taking long span suspension bridge as an example, the influence of joint rigidity of suspension bridge with steel truss stiffening girder on completed bridge working points are studied. Space finite element calculation for two samples with different joint rigidity is carried out. Analysis indicates that joint rigidity has little influence on deck line of long span suspension bridge, main and suspension cable tension as well as component axial force, but has obvious influence on member stress distribution. Last, the suggestions for design and construction based on the finite element simulation results are presented.
出处
《公路》
北大核心
2009年第3期29-34,共6页
Highway
基金
交通部西部交通建设科技项目,项目编号200531800019
关键词
悬索桥
钢桁架
有限元计算
节点刚度
suspension bridge
steel truss
finite element calculation
joint rigidity
