Çekme Düzensizliği Bulunan Betonarme Binaların Geçiş Kat Döşemelerinin Modellenmesi

Abstract

Slabs are horizontal carrier system elements that transfer the earthquake loads acting on the floors to the vertical carrier and enable these elements to work together.  Slabs with high in-plane rigidity compared to vertical carriers are modeled as rigid diaphragms.  The rigid diaphragm provides a suitable solution for reinforced concrete buildings with regular carrier system. However, rigid diaphragm acceptance should be carefully examined for the transition floor slabs in buildings with setback irregularity and with basement floors surrounded by shear wall from normal floors. Turkey Earthquake Building Code the rigidity changes suddenly  transition floor slabs the necessity of modeling with finite elements and sufficient rigidity ownership means that calculates shown is indicated. Therefore, in the study, the applicability of the rigid diaphragm model was investigated by examining the differences between the rigid diaphragm model and the finite element model on the reinforced concrete building models with setback irregularity. For this purpose, slabs on models were modeled in two different ways, namely the rigid diaphragm model and the finite element model, and analyzed using the mode superposition method. The models have been examined by taking into account modal contribution, the horizontal displacement change and changes in stress distributions in the transitional floor. As a result of analyzes, it has been observed that the finite element model gives higher values for the systems examined compared to the rigid diaphragm model, but the difference is between the acceptable limits. Therefore, considering the advantage of the analysis period, it was concluded that the rigid diaphragm acceptance would be suitable for the systems under consideration by taking sufficient slab thickness.