The Vulnerability Research On Glass Curtain Wall Of High-rise Building By Considering Wind-induced Internal And External Pressure

As a kind of maintenance structure,curtain wall has many advantages in the use of function and decoration function.In recent years,the curtain wall is widely favored by architects,and has been widely used.However,the accidents of the glass curtain wall which caused by typhoon are increasing gradually.At present,the domestic research on the vulnerability of high-rise glass curtain wall is relatively seldom,after curtain wall falling off,the research on the superposition of internal pressure and external pressure has not been done.Thus,this paper is mainly based on Monte Carlo simulation method,analysis of the vulnerability of the high-rise building curtain wall in the strong wind,and research the influence of vulnerability cause by wind pressure and internal pressure when the curtain wall fell off.In this paper,a practical building is taken as an example.According to its curtain wall form and integrated curtain wall design specification,the failure mode of each component of the curtain wall is put forward.According to the failure mode,determined the function,then determined the number features of each random variables in the function.Finally,the Monte Carlo simulation method is used to program the failure probability of each component under different wind speeds.In determining the wind load on the analysis object,considered analysis object's wind field caused by the influence of the surrounding building under various working conditions.Through built the building model,the terrain model and the computational domain model,the computational domain model is meshed,the turbulence model,the wall function and other calculation parameters are determined,the twelve different flow direction models are calculated,finally obtained the maximum wind pressure coefficient.The wind pressure coefficient is substituted into the MATLAB program to calculate the failure probability of each component at different wind speeds,and obtain the vulnerability curve of each componentWhen the curtain wall fell off,the wind will from the entrance into the building,which caused internal pressure,within a certain range,it will superimpose with the building outside the pressure in a certain range.Through the numerical simulation,we can get the actual wind pressure buildings when building surface appeared curtain wall fell at different area and locations.To find out the most unfavorable damage location and the continuous destruction position,and on the basis of these analysis,to obtain wind damage vulnerability curve considering wind induced internal pressure...