Investigation comparatively of different external central steel braced frame behaviours with ductility level high and limited

Abstract

In steel structures to prevent horizontal displacement and deformations due to loads such as especially earthquake and wind are used various types of diagonal element. This matter reveals the importance of selection the right steel structural system suitable for the purpose. On the other hand, steel structures according to the Turkey Earthquake Building Regulation must be ductile to consume the earthquake energy. The objective of this study when this is the case are investigated comparatively the behaviours of steel structures with different external central steel braced the ductility level high and ductility level limited according to Turkey Earthquake Building Regulations. The findings obtained from the structural analyses carried out with the Sta-Steel program reveal that different external central steel braced structure models with ductility level high behave better than structural models with ductility level limited and different external central braces that increase the structure lateral stiffness increase the performance of the said structure. Also, the base shear force values of the ductility level limited external central steel braced structure models are larger than the ductility level high and external central steel braced structure models. It shows that these obtained findings in terms of the steel structures safety to be constructed in Turkey it would be more rational to prefer the steel structural systems with ductility level high steel brace members.