摘要
为研究重要设计参数对地锚、自锚式悬索桥力学性能的影响,运用数值分析法分析了不同矢跨比、边中跨比和主梁抗弯刚度分别对地锚式悬索桥和自锚式悬索桥位移特性、主缆、桥塔和加劲梁内力的影响。此外,比较了在280m、350m、400m、450m、500m跨径下取用相同设计参数时地锚和自锚式悬索桥的力学响应。结果表明,活载作用下地锚体系的主塔位移、主梁位移及弯矩均更小,且同等情况下材料用量更少,经济性更优。
To master the influence of design parameters on the mechanical performance of earth- anchored and self-anchored suspension bridge,the research studies the displacement,internal force of cable,tower and girder of both earth-anchored and self- anchored suspension bridge with varying sag ratio,ratio of side to middle span,and flexural stiffness of girder. In addition,the study compares the mechanical properties of earth- anchored and self- anchored suspension bridge with the main span length of 280,350,400,450,500 m using same design parameters. The result shows that the earth-anchored suspension bridge has smaller displacement and bending moments,so does the material consumption and economic performance.
出处
《内蒙古公路与运输》
2016年第4期16-21,共6页
Highways & Transportation in Inner Mongolia
关键词
地锚体系
自锚体系
参数分析
力学性能
earth-anchored system
self-anchored system
parametric analysis
mechanical performance
