悬索管道桥结构参数对全桥动力特性的影响研究  

Effects of Structural Parameters on Dynamics of Pipeline Suspension Bridge

作　　者：祝志文[1] 李友祥[1] 王召祥[1] 陈政清[1] 

机构地区：[1]湖南大学风工程试验研究中心,湖南长沙410082

出　　处：《公路工程》2008年第5期36-39,共4页Highway Engineering

基　　金：国家自然科学基金(50678067)

摘　　要：大跨度悬索管道桥桥面窄,宽跨比小,结构十分轻柔,结构参数的改变对其动力特性有较大的影响。以川气东送野山河悬索跨越工程为例,采用大型有限元分析软件ANSYS10.0分析了风缆预张力和风缆面与水平面夹角变化对该悬索管道桥动力特性的影响。研究表明,提高风缆预张力和选取适当的风缆与水平面的夹角能有效地提高全桥结构刚度。Long-span pipeline suspension bridges always show notable flexibility because of their narrow deck and small ratio of large deck width to span length. The dynamics of this kind of structure are sensitive to different structural parameters. By applying the finite element software ANSYS10. 0 to the Yeshanhe pipeline suspension bridge, this paper studies the effects of structural parameters on dynamics of full bridges, It is found that the increase of axial tensile force in wind cable or selecting suitable angle of wind cable can effectively improve the bridge stiffness.

关 键 词：悬索管道桥 动力特性 结构参数 有限元分析 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]