摘要
为研究超大悬臂双柱预应力钢筋混凝土盖梁受力特性,采用桥梁博士V4建立梁单元模型,采用FEA NX建立实体模型进行计算分析。与实体模型相比,梁单元模型计算结果较为保守。墩柱横向宽度影响盖梁内力分布,盖梁在柱顶可考虑弯矩折减,以优化结构设计、节约工程造价。在梁单元模型中施加一对均布力和集中力进行简化计算。
In order to study the mechanical properties of super-large cantilever double-column prestressed reinforced concrete bent cap, the beam element model is established by Bridge Doctor V4 and the solid model is established by FEA NX for calculation and analysis. Compared with the solid model, the calculation results of the beam element model are more conservative. The transverse width of pier stud affects the internal force distribution of bent cap. The bending moment reduction of bent cap can be considered at the top of column to optimize the structural design and save the engineering cost. A pair of horizontal distribution force and concentrated forces are applied to the beam element model for simplified calculation.
出处
《城市道桥与防洪》
2022年第12期93-96,I0009,共5页
Urban Roads Bridges & Flood Control
关键词
双柱盖梁
弯矩折减
实体模型
超大悬臂
double-column bent cap
bending moment reduction
solid model
super-large cantilever
