摘要
为了研究锚碇系统中主缆腐蚀对全桥受力和变形影响,通过主缆直径分别减少5.1mm、10.1mm、15.2mm、20.3mm、25.3mm和30.4mm等六种情况来模拟主缆腐蚀的程度,通过与未腐蚀模型数据进行差值计算,进而考虑主缆腐蚀对全桥其他构件的受力和变形影响。数据分析结果表明,腐蚀程度越深,对主缆应力、Z轴向位移、索塔弯矩、上下游侧吊杆和弦杆Z方向的位移变化量越大。
In order to study influence of main cable corrosion in anchorage system on whole bridge stress and deformation,a simulation of main cable corrosion degree is made by diameter reduction with the following six lengths of 5. 1mm,10. 1mm,15. 2mm,20. 3mm,25. 3mm and 30. 4mm. Through calculating the deviation against data by non- corroded model,the impact of main cable corrosion on stress and deformation of other components of the bridge is further taken in to consideration. The result of data analysis indicates that with rising of the corrosion degree,a greater change will be induced in main cable stress,Z axial displacement,pylon bending torque,uper and lower side suspender and chord member placement in Z direction.
出处
《北方交通》
2014年第12期25-30,共6页
Northern Communications
关键词
悬索桥
锚碇系统
主缆
腐蚀环境
Suspension bridge
Anchorage system
Main cable
Corrosive environment
