钢箱-混凝土组合曲线梁桥长期爬移分析方法

为了分析钢箱-混凝土组合曲线梁桥的长期爬移规律及其影响因素,并提出可能的防控措施,采用Abaqus有限元软件建立了钢箱-混凝土组合曲线梁桥的有限元分析模型,分别提出了支座摩擦滑移、长期精细温度场以及车辆离心力的模拟方法,分析了在这几种因素共同作用下曲线梁桥支座连续2 a的切向、径向位移变化规律,为钢箱-混凝土组合曲线梁...

Analysis Method of Long-term Creep for Steel Box - Concrete Composite Curved Girder Bridge

Steel-concrete curved composite beams are widely used in the bridge construction of urban and highway interchange ramps. Due to their complex mechanical characteristics, this kind of bridges often creep to the outside of the curve during operation. In order to analyze the long-term creep law and its influencing factors of steel box concrete composite curved beam bridge, and put forward possible prevention and control measures, the long-term creep analysis method of steel box concrete composite curved beam bridge is proposed. Firstly, the finite element analysis model of steel box concrete curved composite beam bridge is established by using ABAQUS finite element software. The simulation methods of bearing friction and slip, long-term fine temperature field and vehicle centrifugal force are proposed respectively, and the variation laws of tangential and radial displacement of the bearing of curved beam bridge for two consecutive years under their joint action are analyzed. It provides a theoretical basis for the creep prevention of steel box concrete composite curved beam bridge.