T梁桥钢筋混凝土桥面板受力分析

Force analysis for reinforced concrete bridge deck of T beam bridge

以内蒙古宝贝河大桥静载试验为依托,使用Midas FEA建立了有限元模型,基于该模型对桥面板厚度及主梁间距两个结构参数进行分析,得到了不同桥面板厚度及主梁间距对桥面板应力与挠度的影响,指出桥面板厚度变化对桥面板底缘混凝土拉应力、铺装层顶缘混凝土拉应力影响最大;主梁间距变化对桥面板应力及挠度影响较为明显。

Based on the static load test of the Baobei River Bridge in Inner Mongolia,the finite element model was established by Midas FEA.Based on the model,the force response of bridge deck was analyzed with different bridge deck thickness and different main beam spacing. The results showed that the increase of the concrete tensile stress at the bottom of the bridge deck and concrete tensile stress on the top edge of pavement were the most obvious with the increase of the bridge deck thickness. Moreover,the increase of stress and deflection were all obvious with the increase of the main beam spacing.