Seismic Design Considerations For Precast Buildings in Indian Perspective

Abstract

Use of precast concrete in earthquake resistant structures is considered with suspicion newlinebecause of their poor performance in major earthquakes. However literature indicates that newlinewell designed precast concrete buildings have performed remarkable well in past newlineearthquakes. Seismic performance and behaviour of precast concrete structures during newlinevarious earthquakes is initially studied and briefly described as reported in literature. A newlinehistorical perspective on the use of precast concrete structures in seismic affected areas newlineand chronological changes in codal provisions are presented. Seismic design concepts in newlinebrief are described for precast concrete beams, beam-column, beam-column joints and newlineshear dominated system. Design examples of precast concrete diaphragm, building frame newlineand connections are presented as a guideline in Indian perspective. Analytical studies newlineusing nonlinear pushover static analysis for the seismic performance and behavior of newlineprecast concrete elements in buildings have been performed. Seismic design provisions of newlineprecast concrete structures in various country codes are studied and reported briefly. A newlinebrief review of the practice on seismic design and construction of precast elements is newlinepresented .An attempt for suggesting recommendation to Indian codes of practice for newlinedesign of precast concrete structures is made based on the present work. newlineKEY WORDS: Seismic performance, Precast concrete structures; Beam-column joints; newlineShear dominated system; Seismic design; diaphragm; Moment resisting frame ; nonlinear newlinepushover static analysis; Indian codes. newline