基于转角位移法对正交各向异性桥面板内力的分析计算

Analytical Calculation of Internal Forces in Orthotropic Plated Bridge Decks Based on the Slope-Deflection Method

由于大量的焊接连接件、高度集中荷载作用和它们导致的大量应力循环,正交各向异性桥面板对疲劳破坏非常敏感。在公路桥中,焊接在桥面板的加劲腹板通常易于遭受疲劳破坏。开发了一个分析模型,可以运用转角-位移法计算应力。它构建了一个桥面板的横截面模型,但是其中考虑了整个正交板的水平和竖向刚度以及纵向加劲肋的扭转刚度。这种方法可以计算桥面板横截面上的所有内力。

Orthotropic plated bridge decks are highly sensitive to fatigue damage, due to the large amount of welded connections, the high patch loads and the large number of stress cycles they involve. For highway bridges, the stiffener web to deck plate weld is often the determining fatigue detail for the deck design. This paper develops a detailed analytical model for the stresses in this detail, using the slope-deflection method. It models a cross-section of the deck plate, but incorporates into it the influence o...