Wind-induced Damage Analysis Of Light-weight Steel Industial Buildings

With the development of Chinese economy, the demand for light steel plant greatly increased. Light-Steel plant has advantage of light weight, low cost, short construction period, etc. Because of its light weight, stiffness and other small features, these steel structures are very vulnerable to strong winds, especially typhoons, and the survival of these structures is of importance for Chinese economy. In order to study the hurricane vulnerability of light steel plant, the paper work done in the following areas:(1) The hurricane vulnerability of light steel roof was calculated based on the wind load specification. The randomness of various parameters was considered when calculating wind loads and structural bearing capacity. The criterion of roof damage and the damage grades was specified, the failure probability at each wind speed of a typical light steel roof was calculated.(2) The hurricane vulnerability of light steel roof was calculated based on the wind tunnel experiments date. The correlation between wind pressures was considered. A row of measuring points was loaded at the same time. In the analysis of load effects, the probability plot correlation coefficient method was used to select the best distribution to fit the force of self-tapping screw, then the conversion process method was used toget extreme force of tapping screws. The damage rate through the method of considering the screw’s extreme tension or not was calculated. The failure probability of a light steel roof in the wind tunnel experiment was calculated, and the results were compared with the standardized wind load calculation results.(3) The hurricane vulnerability of outside doors was calculated based on the specification. The criterion of outside doors damage and the damage grades was specified, the failure probability of outside doors at each wind speed was calculated, and the relationship between the outer doors and roofs damage were discussed. Some suggestions of the wind-resistant design of envelope structure was given.