珠江黄埔大桥北汊桥钢主梁应力不均匀性研究

Study of Stress Non-Uniformity in Steel Main Girder of North Bridge of Huangpu Bridge over Zhujiang River

珠江黄埔大桥北汊桥主梁采用扁平钢箱梁,结合该工程,采用混合有限元方法计算钢箱梁的受力,得到钢主梁板件的应力,分析箱梁顶板和底板应力分布的不均匀性,揭示斜拉桥中扁平钢箱梁的应力分布特点。

The flat steel box girder is designed for main girder of the North Bridge of Huangpu Bridge over Zhujiang River. In this paper, with reference to the Bridge, the mechanical behavior of steel box girder is calculated by the mixed finite method and the stress in plates of the box girder have been obtained. The non-uniformity of stress distribution in the top and bottom plates of the girder is analyzed and the stress distribution pattern of the flat steel box girder for cablestayed bridge is therefore made clear.