基于强配筋法的结合梁负弯矩区受力研究

该文结合某大桥的桥面分析实例,利用有限元软件建立仿真模型,针对强配筋法进行研究。模拟组合梁负弯矩区试验测试在分级加载情况下,混凝土桥面板、钢梁腹板、钢梁上下翼缘等主要控制点的应力与变形,研究混凝土板、钢梁腹板、钢梁上下翼缘的应力分布与大小,确定在不同设计方法作用下,支点负弯矩区混凝土桥面板和钢梁的内力分配,桥面板应力分布,从而为桥梁设计提供可用参考依据。

Study on Stress in Negative Moment Area of Combined Girder Based on Strong Reinforcement Method

As the example of the bridge deck analysis,the finite element software is used to set up the simulation model.Aiming at the study of strong reinforcement method,the article simulates the stress and deformation of the main control points of concrete bridge deck plate,steel beam web,and the upper and lower flanges of steel beam of the combined girder under the condition of step load of negative moment area test,studies the stress distribution and value of concrete plate,steel beam web,and upper and lower flanges of steel beam,and defines the internal force distribution of concrete deck plate and steel beam,and the stress distribution of bridge deck plate in the negative moment area of support point under the actions of the different design methods so as to provide the usable reference basis for the design of bridge.