Safety Analysis For Fasten-style Tubular Steel Scaffold And Bearing Frammework In The Building Construction

The fasten-style tubular steel scaffold system and bearing frammework system are often used in building construction because they are convenient, versatile and relatively inexpensive. However, the deficiency of design philosophy and the shortage of construction management and stuff quality are the main factors that induce structural failures during the construction phase. Therefore, the study on the safety of coupler-steel tubular scaffold system and f bearing frammework system during the construction phase is significant and emergent.In this dissertation, an evaluation system on the performance of fasten-style tubular steel scaffold system and bearing frammework in the building construction was presented, which including engineering investigation, systematic experiment, finite element analysis, reliability analysis and field monitoring. The major contents are summarized as follows:(1) Base on engineering investigation, the factors that affect the structural safety during construction are summarized in this dissertation. The geometric parameters of the stuff and the parameters of raising a scaffold are also measured. Thereby the result of investigation was analyzed and the probabilistic model was established.(2) Systemic experimental study on the stuff of scaffold is done. Based on experiment result this dissertation determined the effect of initial imperfection on the load capacity of the scaffold column, and the semi-rigid model of coupler, which plays an important role in affecting the buckling capacity, was established.(3) Base on the investigation and experimental study, a FEA method was established. Linear and nonlinear buckling techniques were applied to analyze the...