Analytical Model for Tensile Membrane Action in RC Beam-Slab Structures under Internal Column Removal
Publication: Journal of Structural Engineering
Volume 145, Issue 6
Abstract
An analytical approach was developed at Nanyang Technological University, Singapore, to predict structural capacities of RC beam-slab structures under the internal column removal scenario, taking into account the contribution of tensile membrane action in the slab. The model considers both commonly used loading methods in the laboratory, namely, concentrated and uniformly distributed loads. Catenary action in internal beams is neglected for conservatism, and tensile membrane action is assumed to rely solely on the yielding force of the top reinforcement arranged along negative yielding lines in the slab. The failure criterion of the model is based on fracture of longitudinal bars in internal beams, either near the middle or near the edge of beam-column joints. The proposed approach is shown to be reasonable because it provides conservative estimates compared with actual tests, which had high rotational restraints at the slab perimeter, and still gives good predictions for cases of semirigid rotational restraints.
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Acknowledgments
This research is funded by Ministry of Home Affairs, Singapore, under grant number MHA 191/9/1/345. The authors gratefully acknowledge this financial support.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 6 • June 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: May 31, 2017
Accepted: Oct 17, 2018
Published online: Mar 20, 2019
Published in print: Jun 1, 2019
Discussion open until: Aug 20, 2019
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