Seismic Evaluation of Gravity-Load-Designed Column-Grid System
Publication: Journal of Structural Engineering
Volume 128, Issue 2
Abstract
This paper presents experimental research findings of gravity-load-designed perforated waffle-slab systems. The tested system is part of an industrial facility where the floor is subjected to heavy gravity loads. The presented test program consists of two reduced-scale identical specimens modeling half the height of an interior column with a portion of the waffle slab bounded by the centerlines of adjacent bays. For seismic evaluation, lateral loading is applied at the tested column end in a bidirectional quasistatic manner. The results indicate high deformation ductility of the system with minor damage to the waffle slab. The mode of failure is governed by formation of stable plastic hinging at the junction between the column and the waffle-slab joists. Special attention is given to modeling the structural response at the column-joists region. Moment transfer between the column and the floor joists is discussed through the use of curvature distributions along the floor joists.
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Information
Published In
Journal of Structural Engineering
Volume 128 • Issue 2 • February 2002
Pages: 160 - 168
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jun 27, 2000
Accepted: Jul 20, 2001
Published online: Feb 1, 2002
Published in print: Feb 2002
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