چكيده به لاتين
Soule structure is a type of steel structure which can provide wide open spans with a reasonable structure weight. This type of structure is very popular for Industrial purposes, Sport stadiums, gathering centers etc…. seismic damages may cause major financial and life costs. These structures are usually walled by either light flexible sandwich panel or heavy, non flexible bric walls.
The purpose of this study is to compare the weight and seismic performance of this type of structure with these two different types of walls with similar assumptions and dimensions.
In this research, software analysis and computer modeling method has been used. Research process is based on the study of moment resistant frame of 18 Soule structures. Four independent variables, span, height, wall material and loading criteria (imposed by construction site) and the dependent variables of linear and nonlinear behavior of the structure have been investigated.
Results of this study: Regarding the Soule structures with brick walls, even with a large increase in unit weight of the structure (weight per square meter), the drift caused by the earthquake load cannot be controlled. Most important plastic hinges for Soule structures are (PM3), performed by combination of axial load and bending moment, at the end of pressured rafter elements, which takes shape close to the column connection. Sheer hinges (V2) are not important in Soule structures, for no shear hinge has taken shape in studied Soule structures. There is a very significant difference between target displacement and the displacement that leads to the first plastic hinge of the Soule structures. No clear rules can be defined to explain the effects of increasing the height of column or width of span of Soule structures on its push over demand curve. Soule structures have very low ductility. The structural period resulting from spectral analysis and the structural period calculated using the Iranian code of practice for seismic resistant design of buildings (2800) differ a lot. P-∆ effect for Soule structures is negligible. The participation coefficient of the first vibration mode in for Soule structure is about 1. Based on the ATC40 Soule structures remain even during the earthquakes with return period of 2475 years.
