云上草原斜拉平台设计关键技术

Key Technologies for the Design of Cable Platform at Sky Land

“天空之阶”景观斜拉平台采用独特的单悬臂结构,悬臂长度为80.8 m,桥面为变宽双幅形式,平面呈A字形,中间采用4道横梁相连,悬臂端部设观景平台。主梁采用热轧型钢桁架,索塔为钢结构十字形断面,塔梁采用球铰支座约束。论文从结构体系、复杂风环境、恶劣施工条件、BIM辅助设计等方面详细阐述该景观斜拉平台的设计要点和关键技术。

The“Steps of the Sky”landscape cable-stayed platform adopts A unique single cantilever structure,the cantilever length is 80.8 m,the bridge floor is widened in the form of double width,the plane is A-shaped,the middle is connected by four beams,and the cantilever end is equipped with a viewing platform.The main beam is a hot-rolled steel truss,the tower is a steel structure cross section,and the tower beam is constrained by ball hinge supports.This paper expounds the design key points and key technologies of the cable-stayed landscape platform from the aspects of structure system,complex wind environment,bad construction conditions and BIM assisted design.