屋盖预应力索节点深化设计

DEEPENING DESIGN OF ROOF PRESTRESSED CABLE JOINTS

大跨度张弦拱壳结构是一种新型的大跨度自平衡空间结构体系,其结构由钢拱壳和钢索组成,钢拱壳结构与钢索通过索夹节点由受拉的撑杆连接,索节点的结构设计是张弦拱壳结构设计的重要组成部分,其设计的合理性是发挥整个张弦拱壳功能的关键。索节点主要包括锚固和索夹节点,深化设计过程中索节点需传力路线明确、结构安全、便于制作和安装,设计过程须与施工方式结合,其结构形式直接关系到施工的可行性和难易程度。

The large-span arch shell string structure is a new type of large-span self balanced spatial structure system,which is composed of steel arch shell structure and large-diameter steel cables.The steel arch shell structure is connected with the steel cables through the cable nodes.The structural design of the cable nodes is an important part of the structural design of the beam string,and the rationality of the design is the key to play the whole function of the beam string.Cable joints mainly include anchoring and cable clamp joints.In the process of deepening the design of cable nodes,the force transmission route should be clear,and the structure should be safe,easy to make and install.At the same time,the whole design process must be combined with the construction method,and its structural form is directly related to the feasibility and dificulty of the construction.