Research On Mechanical Properties Of Single-Layer Cable Net Structure Of Pgcw Based On A Project

Prestressed single-layer cable-net glass curtain wall is a new structure which combines the characteristics of large-scale and permeability perfectly.Its structural form and mechanical characteristics are quite different from those of traditional structures.At present,the related research is still insufficient,and the current engineering specifications are not perfect enough.Therefore,the study of the structure performance has important significance and value.In this paper,the out-of-plane static performance of single cablenet curtain wall structure and the seismic performance of cable-net coupled with the main structure are studied and analyzed through scale model test and finite element software simulation.The main work of this paper is divided into the following aspects:(1)According to the case of single-layer cable-net glass curtain wall in practical engineering and the theory of similarity ratio,a scale model of 1:10 was designed and made,including two working conditions of glass or not.The out-of-plane loading and unloading tests were carried out to record the changes of displacement and stress in the whole process,and the stress performance of single-layer cable-net glass curtain wall reflected by the model was discussed.(2)Based on the results of scale model test,a finite element model which can accurately reflect the performance of single-layer cable net glass curtain wall is established,and the finite element model of curtain wall structure in practical engineering is established by using its modeling method.The different factors affecting the prestressing tension and out-of-plane stress performance of the curtain wall structure are analyzed and discussed.(3)Based on the actual engineering design data,the finite element model of the main structure is established,and the model of a single curtain wall is coupled with it.The selfvibration characteristics of the coupling model are analyzed.By adjusting the selfvibration characteristics of the cable network,the influence of the cable network working together with the main structure and the different performance under different seismic loads are analyzed.