闵浦二桥箱形截面杆件全焊钢板组合桁梁设计

Design of Fully-welded Steel Plate Composite Truss Girders of Box Section Member Bar of Minpu Bridge Ⅱ,Shanghai

以闵浦二桥主桥钢桁梁为背景,从钢板组合桁梁,桁架腹杆体系,横梁、平联与整体空间计算,主桁箱形截面杆件,以及全焊整体节点等方面简要介绍了现代新型箱形截面杆件全焊钢板组合桁梁的主要设计思路和方法。根据简化模型,推导出估算节点板厚度的公式,提倡设计创新理念。

With the background of main steel truss girder of Minpu Bridge Ⅱ, the principal design idea and method of modern new type box section member bar fully-welded steel plate composite truss girders have been introduced from several aspects such as steel plate composite truss girders, truss web member system, the total space calculation of beam, main truss box section member bar and fully-welded monolithic joint, etc. According to the simplified model, the formula for the thickness of design gusset plate would be deduced by the author and the innovation creation idea should be promoted.