An Investigation on Reliability of RC Bridge Columns Designed for Displacement Ductility Proposed by the Caltrans SDC

International Journal of Civil Engineering

© 2019 by SSRG - IJCE Journal

Volume 6 Issue 3

Year of Publication : 2019

Authors : Parsa Heydarpour

10.14445/23488352/IJCE-V6I3P104

How to Cite?

Parsa Heydarpour, "An Investigation on Reliability of RC Bridge Columns Designed for Displacement Ductility Proposed by the Caltrans SDC," SSRG International Journal of Civil Engineering, vol. 6,  no. 3, pp. 29-33, 2019. Crossref, https://doi.org/10.14445/23488352/IJCE-V6I3P104

Abstract:

P–Delta effects are the result of gravity loads acting through the structure's lateral displacement. Typically, whenever columns have small lateral displacement, it is acceptable to neglect the P-Delta effect. Still, as columns experience high nonlinearity levels, it is crucial to capture the P-Delta effects accurately. It is of main importance to reliability detect the safe threshold for ignoring the P-Delta effects. Caltrans SDC provides a procedure that can evaluate whether P-Delta effects can be neglected in design. Whenever requirements are satisfied, predefined displacement ductility is used to design structural elements. This research intends to study the reliability of the threshold proposed by the Caltrans SDC for ignoring the P-Delta effects. Nonlinear time history analysis is used to compare the maximum reached displacement ductility with and without P-Delta effects.

Keywords:

P-Delta effects, nonlinear time-history analysis, Incremental Dynamic Analysis, Threshold for neglecting P-Delta effects, Caltrans SDC

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