Proposal Research Proposal Example | Topics and Well Written Essays - 2500 words

Research Proposal Example (a) Horizontal dimensions, and (b) Extended uniform setbacks. The analysis is conducted using total 24 two-dimensional five-story, five-bay MRSF models that cover all possible combinations of the vertical and horizontal dimensions of uniform setbacks. The effects of irregularities and variations in elastic demands, in response to earthquakes, will be investigated and compared through; (a) Modal properties (b) Elastic base shear strength demands (c) Elastic story shear strength demand (d) Global displacement demands (e) Story drift demands (f) Elastic multi degree of freedom systems (MDOF) modification factor. Variation in these parameters is determined using accepted linear static and dynamic procedures. During the study, the variation in inelastic capacities will also be evaluated and compared through; (a) Base and story yield shear strengths (b) Global and story ductility capacities (c) Failure mechanisms and ultimate strengths (d) Inelastic seismic design coefficients such as; structural ductility factor (), ductility reduction factor (R), structural over-strength factor () and their distributions using nonlinear static procedure, namely push-over analysis. The limitations and adequacy of each analysis procedure in predicting demand and capacities of buildings with specific amount of irregularity will also be evaluated by comparison with the results obtained from "exact" nonlinear time-history analysis procedure. The study is expected to define, 'limit states' of uniform setbacks, for the application of each procedure determining seismic demands and capacities. 1. INTRODUCTION 1.1 Background and Motivation of the study Design of a building with vertical geometric... (d) Inelastic seismic design coefficients such as; structural ductility factor (), ductility reduction factor (R), structural over-strength factor () and their distributions using nonlinear static procedure, namely push-over analysis. The limitations and adequacy of each analysis procedure in predicting demand and capacities of buildings with specific amount of irregularity will also be evaluated by comparison with the results obtained from "exact" nonlinear time-history analysis procedure. The study is expected to define, 'limit states' of uniform setbacks, for the application of each procedure determining seismic demands and capacities. Design of a building with vertical geometric irregularity to resist earthquake loads is a challenging problem that structural engineering needs to overcome early in the conceptual design phase.