Time‐Dependent Shortening of Slender RC Columns
Publication: Journal of Engineering Mechanics
Volume 119, Issue 10
Abstract
The paper presents a method of analysis for the short‐term and time‐dependent response of slender, reinforced concrete columns using the age‐adjusted effective modulus method. For the long‐term case, a recommended general numerical procedure used in a computer program is described in detail. The distributions of strain and stress on cross sections and the prediction of lateral deflection are given under both short‐term and long‐term (one‐time‐step and multiple‐time‐step case) situations. The formula for calculating column shortening is derived based on the principle of virtual forces. The method is applied to determine the axial and bending shortening of a pin‐ended, isolated column. Shortening‐time‐relation curves show the effects of axial and bending shortening on the total shortening respectively. The influence of eccentricity and column length on shortening are also studied. The results from the computer program are in good agreement with experimental and theoretical results reported by other investigators.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 119 • Issue 10 • October 1993
Pages: 2036 - 2051
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Jul 1, 1992
Published online: Oct 1, 1993
Published in print: Oct 1993
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