支座纵向摩阻力对济南黄河三桥受力性能的影响

为了探索支座纵向摩阻力对该桥受力性能的影响,对主梁的支座按照纵向约束刚度的不同设定了5种纵向约束工况来模拟支座的纵向摩阻力,分别分析各工况下恒载和活载在主梁控制断面和塔底产生的内力、塔顶产生的纵向位移、斜拉索索力等,总结出了不同纵向约束方式下桥梁受力性能的变化规律;然后根据该桥的荷载试验结果,确定了相对合理的纵向约束方式;最后提出利用该类型支座在以后此类桥梁的设计中需要注意的问题.该研究成果为使用此类型支座桥梁的计算分析提供了技术参考.

Analysis of structural performance on friction of bearing of the third bridge of the Jinan Yellow River

For the analysis of structural performance on friction of bearing of the bridge,this paper adopts different longitudinal restraint conditions simulating longitudinal friction of bearing by setting different longitudinal rigidity, in different conditions of dead load and live load,such as the internal force of the control section of the main beam and the bottom of the bridge tower,the longitudinal displacement of the top of the bridge tower,and the cable-stayed cable force.The changing rule of bridge stress ...