Performance Based Seismic Analysis Of RC Building

Abstract

Earthquake induced forces cause loss of life and properties. It is most important to keep in mind that earthquake don't kill people but buildings do. Building design is done by using factor of safety to account for uncertainity in building capacity and Earthquake demand, because of the lack of knowledge on earthquake demand. In seismic design, buildings can be designed by emplyoing shearwalls, braces and MR frames to increase its capacity. In past Bhuj earthquake, some buildings that seems to be strong are also found weak. To avoid damages, existing building can be retro tted to increase their strength. Performance based design(PBD) is the modern approach to earthquake resistant design. The thesis is an attempt to understand the basics of performance based design and to predict seismic performance. There are several static as well as dynamic non- linear analysis methods, which are used in PBD. Pushover and time history analysis is done on 2D frame and 4-storey bare frame for the basic understanding of this two methods and the performance of building in future earthquake is obtained. SAP2000 is used for Nonlinear static analysis as well as Nonlinear Dynamic analysis of 2D frame. ETABS is used for Nonlinear static analysis of 4-storey bare frame. After this, fundamentals of Incremental Dynamic Analysis ( Nonlinear Dynamic Analysis) is studied and Incremental Dynamic Analysis will be performed on the 4- storey bare frame. 7 diferent ground motions will be selected for this analysis and IDA curves will be generated and performance of the building is predicted.