闵浦大桥双层钢结构抗火设计

S32申嘉湖高速公路上海闵浦大桥是一座跨越黄浦江的双层公路特大桥，主桥为主跨708m的双层双索面双塔斜拉桥。大桥主跨采用板桁结合钢桁梁，为大型双层钢结构，如果下层发生车辆火灾，将对大桥钢结构安全形成威胁，提出了双层大桥特殊的抗火安全性问题。因此，闵浦大桥双层钢结构在火灾下的安全性评估与抗火设计就显得极其重要，介绍了闵浦大桥抗火研究与设计，相关结论可供国内类似大型钢结构借鉴。

Fire-resistant design for double layer of steel structures Minpu Bridge

Shanghai Minpu Bridge is a double-deck highway bridge across the Huangpu River in S32 Shenjiahu Highway,the main span of main cable-stayed bridge is 708m with double deck and double cable and double towers.As a large double steel structure,the main span girder is plate and truss structure,if the sublayer vehicle fire occurs,it will threat to safety of the whole steel structure bridge.The two-tier steel structures in fire safety evaluation and fire-resistant design becomes very important for Minpu Bridge.Thi...