The Performance Research On Back-bolt Point-supporting Single-layer Cable Mesh Glass Curtain Wall

Glass curtain wall is a new form of contemporary building external walls. Since the 1950s, glass curtain wall has experienced half a century of development, and become an important symbol of modern metropolis and a significant feature of modern architecture. In recent years, with the progress of glass technology and the construction of large number public buildings, point-supporting single-layer cable mesh glass curtain wall which uses pre-stressed cable as its supporting structure has been used widely because of its succinctness and lucency.According to the different forms of connecting points between glass panel and supporting component, point-supporting single-layer cable mesh glass curtain wall can be divided into three categories: floating-head type, countersunk type and back-bolt type.There are a lot of research on the floating-head type and countersunk type point-supporting curtain walls of this new form building structure by domestic and foreign scholars, but few study on the back-bolt point-supporting glass curtain wall. Whereas all above, this paper has done as follows:(1) Established finite element model of a back-bolt glass panel and do a force analysis. Studied on the impact of the change of the glass openings diameter, opening depth and the glass thickness to the load-bearing properties of glass panel;(2) Established the finite element model of a glass panel which is interaction to the back-bolt fasteners and bedding material. Studied on the impact of the elastic modulus of cushion, thickness of cushion and inner diameter of fasteners to the load-bearing properties of glass panel, and had an corresponding comparison to floating-head cushion;(3) Established a whole finite element model of the back-bolt point-supporting single-layer cable network glass curtain wall, imposed wind load to the model, carried its load-bearing performance analysis with the finite element analysis software ANSYS. Discussed the impact of the glass thickness, glass size, glass span, cable cross-sectional area, the cables pre-tension of the back-bolt glass plate to the load-bearing properties of curtain walls, and provided a reference to the design and construction of the back-bolt point-supporting single-layer cable network glass curtain wall.