Wind-induced fragility analysis of 360° occluded metal cladding roof
The 360° occluded metal cladding roof,among various metal roofing forms,exhibits commendable compressive strength.Nevertheless,its resistance to wind uplift remains inadequately explored under real wind conditions.A quantitative analysis on the wind vulnerability of the 360° occluded metal cladding roof system was conducted to ascertain its actual wind resistance capacity.Employing a combination of mechanical tests and numerical simulations,the load-bearing capacity and wind load effects on the 360° occluded metal cladding roof system of a TB switch station were analyzed.Leveraging principles of probability theory,an efficient method was proposed for computing the failure probability of connection components,facilitating rapid analysis of the failure probability of metal cladding units and the overall roof vulnerability,and quantifying the average level and variation degree of loss.The research reveals that the most critical loading condition typically occurs with wind flow perpendicular to the roof ridge.Under such conditions,indications of damage appear when wind speeds reach level 9,while the entire roof is highly susceptible to being uplifted when wind speeds reach level 12.
NETL
NSTL
万方数据
