Large-span curved surface curtain wall dense column cantilever structure system and installation method thereof

The invention relates to the technical field of structural engineering, in particular to a large-span curved surface curtain wall dense column cantilever structural system and a mounting method thereof. The curved surface curtain wall cantilever structure system comprises a box type dense column, the box type dense column is sequentially connected and provided with an arc-shaped steel beam, a roof steel structure and a cantilever steel platform, and the installation method based on the structure system improves the segmental installation precision of the arc-shaped box type steel beam; and meanwhile, the problems of mutual communication of the L-shaped curtain wall column nodes of the arc-shaped box-shaped steel beam in the structural system and installation precision control are solved. 本发明涉及结构工程技术领域，具体涉及一种大跨度曲面幕墙密柱悬挑结构体系及其安装方法。曲面幕墙悬挑结构体系包括箱型密柱，所述箱型密柱依次连接安装有弧形钢梁、屋盖钢结构以及悬挑钢平台，基于该结构体系的安装方法，提高了弧形箱型钢梁分段安装精度，同时解决了该结构体系中弧形箱型钢梁的L型幕墙柱节点相互贯通与安装精度控制难题。