摘要
哈尔滨阳明滩大桥为(46+108+248+108+46)m五跨双塔钢-混凝土组合梁自锚式悬索桥,为了解该桥整体静力特性,按照1∶50缩尺比例设计、制作该桥全桥模型,对模型进行各种组合作用下的模拟加载和有限元计算,将试验结果与计算结果进行对比。研究结果表明:静力荷载作用下,模型实测主缆线形、主梁挠度、塔顶纵向位移、吊索索力及应力均与计算值吻合较好,且均满足规范要求,说明该桥具有足够的刚度和安全储备。
The Yangmingtan Bridge in Harbin is a two-tower steel-concrete composite girder self-anchored suspension bridge ,with five spans of （46 ＋ 108 ＋ 248 ＋ 108 ＋ 46） m .In order to ex-amine its global static performance ,an overall bridge model was fabricated in accordance with a 1 ∶ 50 scale .The model was used to simulate the load application and do finite element calculation under different load combinations ,and the data gained from the test were compared with the calcu-lated values .The results of the study indicated that the measured data of the main cable geomet -rical shape ,main girder deflection ,longitudinal displacement on the tower top ,hanger cable forces and stress all agreed well with the calculated values and met the code requirements as well ,proving that the bridge has adequate stiffness and safety margin .
出处
《世界桥梁》
北大核心
2014年第2期66-69,共4页
World Bridges
关键词
自锚式悬索桥
组合梁
静力性能
变形
应力
模型试验
有限元法
self-anchored suspension bridge
composite girder
static performance
deforma-tion
stress
model test
finite element method
