Research On Performance Of Cable Net Curtain Wall Structure Considering The Jointing Work Of Glass And Cable Net

With the economy development of our country,the cable net curtain wall structure are applying more and more widely in modern architecture because of its advantages.The effect that prestress relaxation on the cable net curtain wall whose support structure of glass is rely on flexible tension cable is more obvious.Cable prestress relaxation can make glass deformation and produce in extrusion.At the same time,the tension of cable net curtain wall structure may change greatly under temperature load and wind load,and this effect can not be ignored.In addition,the late deformation of the main structure can have serious effect on the cable net curtain wall in a certain extent.At present,the study of cable net curtain wall structure is mostly concentrated on the design and construction phase,and the study on the single network is more.But the study for the cable net curtain wall structure in the process of long-term using and under the glass to participate the work is less.So,the research for the single-layer plane cable net curtain wall structure when the glass to participate in the work is very necessary.In this article I have adopted the method of finite element simulation to research the performance of monolayer cable net curtain wall structure under the condition of glass to participate in the work.Firstly,I summarized the basic theory of finite element modeling,and emphatically introduced the cable prestress applying principle and way of cable net curtain wall structure.I have analyzed the performance of structural system by establishing the finite element numerical model under the changing of the parameters.Finally,this paper designed the experimental model of single-layer plane cable net glass curtain wall structure.The size of experimental model is 2m*1.5m,and it upright on the ground.The experiment instrument is dynamic signal acquisition instrument.And the incentive measure is the force hammer.At last,I analyzed the experimental results and calculation results.Through the research we have found that the performance of cable net curtain wall structure has a certain degree change with the changing of parameter.The changing of glass panel partition size have the most serious influence on the maximum internal force of cable net curtain wall system,and the smaller glass panel split size,the smaller the maximum internal force of structure system.The changing of thickness of glass panel have an most effect on the maximum stress of structure system.And maximum stress of lasso is mainly affected by the size of the initial prestressing cable tension.At the same time,the maximum deflection of cable net is mainly affected by the division size of glass panel.We can found that the smaller the division size of glass panel the smaller the maximum deflection of cable net.The vibration mode of single-layer plane cable net glass curtain wall structure is very intensive,and present a antisymmetric style.At the same time,the first order modal of cable net curtain wall is perpendicular to the curtain wall structure plane,and the second order and the higher order vibration characterized by a certain form of antisymmetric style and they are also perpendicular to the curtain wall structure plane.At the changing of parameter of cable net curtain wall structure,the change of frequency is within 5%.This introduced that the change of parameter have little impact on the natural vibration characteristic of the structure.Finally,this article laid a foundation for the cable net curtain wall structure using the method of finite element through comparing the experimental values and calculated values.