Performance Assessment and Design of Multistoreyed Reinforced Concrete Special Moment Resisting Frames

Abstract

Reinforced Concrete Special Moment Resisting Frames are used as part of seismic force resisting systems in buildings that are designed to resist earthquakes. Special proportioning and detailing requirements result in a frame capable of resisting strong earthquake shaking without significant loss of stiffness or strength. These moment resisting frames are called Special Moment Resisting Frames. The main objective of the study is the study of comparative performance of SMRF and OMRF frames, designed as per IS codes, using pushover analysis and software SAP-2002. The more realistic performance of the OMRF and SMRF building requires modeling the stiffness and strength. In this paper performance assessment of buildings designed as Special Moment Resisting Frame (SMRF) and Ordinary Moment Resisting Frame (OMRF) is studied for 4 storeyed, 8 storeyed,12 storeyed and 16 storeyed buildings with fixed support condition. The buildings are designed and modeled using SAP 2000 software. Pushover analysis is performed on these buildings and the response is monitored. A pushover curve comprising of Base Shear versus Roof Displacement is plotted for each frame using the analysis data.