钢–混组合梁桥桥面板受力分析

Mechanical Analysis of Steel-Concrete Composite Beam Bridge Deck

为了研究钢–混组合梁桥桥面板受力特征,以旧桥改建钢–混组合梁桥项目为依托,对钢–混组合梁桥桥面板模型进行加载试验,并利用Abaqus有限元软件对钢–混组合梁桥桥面板模型的挠度及混凝土应变进行模拟分析,有限元模型的分析结果与钢–混组合梁桥桥面板模型试验结果吻合良好,通过调整主梁间距及桥面板厚度对钢–混组合梁桥桥面板进行参数影响因素分析。分析结果表明:主梁间距的变化对钢–混组合梁桥桥面板整体刚度产生较大影响,且主梁间距比桥面板厚度对钢–混组合梁桥桥面板受力影响更加显著。

In order to study the mechanical characteristics of the steel-concrete composite beam bridge deck, relying on the old bridge reconstruction project of steel-concrete composite beam bridges, the deck model of steel-concrete composite beam bridges was loaded and tested, and Abaqus finite element software was used to analyze the steel-concrete composite beam bridges. The deflection and concrete strain of the deck model are simulated and analyzed. The analysis results of the finite element model are in good agreement with the test results of the steel-concrete composite beam bridge deck model. The steel-concrete composite beam bridge is adjusted by adjusting the spacing of the main girder and the thickness of the deck. The panel performs parameter influencing factor analysis. The analysis results show that the change of the main girder spacing has a greater impact on the overall rigidity of the steel-concrete composite beam bridge deck, and the main girder spacing has a more significant impact on the force of the steel-concrete composite beam bridge deck than the thickness of the deck.