Non Linear Analysis Of Reinforced Concrete Flat Plate Structures Subjected To Lateral Loading

Author : Chong Yik Melvin Goh
Publisher :
ISBN 13 :
Total Pages : 490 pages
Book Rating : 4.:/5 (129 download)

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Download or read book Toward Practical Modeling of Reinforced Concrete Flat Plate Structures written by Chong Yik Melvin Goh and published by . This book was released on 2017 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most reinforced concrete (RC) design provisions have been developed on the basis of experimental data involving isolated and highly-idealized structural elements. As a result, many of the RC-related design provisions currently used are unsuitable for providing accurate assessments of RC structural systems. Thus, there is a need for practical modeling procedures that can be used to reliably investigate the performance of real-world RC structures. Such tools can aid in the assessment of structures that are exhibiting distress, that employ atypical or code-deficient design details, are in need of retrofit or modification, or simply are of a type that fall outside of traditional design provisions. This dissertation presents the development and application of nonlinear finite element analysis procedures employing cracked concrete material modeling based on the formulations of the Disturbed Stress Field Model (DSFM). These procedures are used to investigate the punching shear performance of RC flat plates, an area where design is typically done in a highly-idealized manner; yet, structure performance may be greatly impacted by system-level response. Nonlinear finite element modeling was done using two approaches. Three-dimensional solid continuum modeling was found to provide good response estimates for slab-column connection specimens under concentric shear loading and effectively captured the effects of different parameters on punching performance: reinforcement ratio, column size, and slab thickness. The validated solid modeling procedure was used to perform a parametric study on the influence of boundary conditions on the response of multi-bay flat plate structures. The findings indicated that RC slab systems are likely to have load capacities that are greater than that inferred from isolated connection elements. Alternatively, RC slab modeling was also done using computationally-efficient layered shell finite elements that accommodate through-thickness shearing effects. A simple sectional analysis modification procedure was used to incorporate strength enhancements within slab disturbed regions and the proposed procedure was shown to be capable of providing reasonable estimates for the punching shear strength of RC slab-column connections and slab subsystems. Predicted load-displacement curves and failure modes were in reasonable agreement with test data and provided estimates that were similar to those obtained using costlier solid modeling techniques