Shear-critical impact response of biaxially loaded reinforced concrete circular columns

Thilakarathna, Indika, Thambiratnam, David, Dhanasekar, Manicka, & Perera, Nimal (2013) Shear-critical impact response of biaxially loaded reinforced concrete circular columns. ACI Structural Journal, 110(4), pp. 565-574.

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A study on the vulnerability of biaxially loaded reinforced concrete (RC) circular columns in multi-story buildings under low- to medium-velocity impacts at shear-critical locations is presented. The study is based on a previously validated nonlinear explicit dynamic finite element (FE) modeling technique developed by the authors. The impact is simulated using force pulses generated from full-scale vehicle impact tests abundantly found in the literature with a view to quantifying the sensitivity of the design parameters of the RC columns under the typical impacts that are representative of the general vehicle population. The design parameters considered include the diameter and height of the column, the vertical steel ratio, the concrete grade, and the confinement effects. From the results of the simulations, empirical equations to quantify the critical impulses for the simplified design of the short, circular RC columns under the risk of shear-critical impacts are developed.

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ID Code: 62346
Item Type: Journal Article
Refereed: Yes
Keywords: Biaxial Bending, Concrete Columns, Eccentric Loading, Transverse Impacts, Vulnerability Assessment
ISSN: 0889-3241
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 American Concrete Institute
Deposited On: 09 Sep 2013 01:29
Last Modified: 02 Jun 2014 05:28

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