摘要
三跨双塔双索面斜拉桥,主跨跨径400m,为市政桥梁。主梁采用中跨叠合梁,边跨预应力钢筋混凝土箱梁,主塔为A型钢筋混凝土与钢塔组合结构,上塔柱高100m,下塔柱高22m。为研究该桥的结构受力,建立该桥的单梁模型和梁格模型,进行合理成桥状态模拟计算及对比,分析各工况下结构的内力及变形。通过对比单梁模型和梁格模型的计算结果,能够确定该桥在应力、稳定、和刚度方面均满足规范要求。
A three-span double-pylon double-plane cable-stayed bridge is a municipal bridge. Its main span is 400 m. The main beam is a mid-span composite beam. The side span is a pre-stressed reinforced concrete box beam. The main pylon is an A-type reinforced concrete and steel pylon composite structure. The upper pylon is 100 m high and the lower pylon is 22 m high. In order to study the structure stress of this bridge, the single-beam model and the beam grillage model of this bridge are established to carry out the simulative calculation and comparison of finished bridge state and to analyze the internal forces and deformations of the structure under various operating conditions. The comparison and calculation results of single-beam model and beam grillage model can show that the stress, stabilization and rigidity of this bridge all meet the standard requirements.
作者
李盛
刘斌
Li Sheng;Liu Bin
出处
《城市道桥与防洪》
2019年第5期101-105,M0013,共6页
Urban Roads Bridges & Flood Control
关键词
斜拉桥
叠合梁
静力分析
动力分析
梁格
内力
变形
cable-stayed bridge composite beam
static analysis
dynamic analysis
beam grillage
internalforce
deformation
