THESIS
1998
xv, 140 leaves : ill. (some col.) ; 30 cm
Abstract
The principal objective of this research is to present a study into the time dependent behavior of slender structural concrete columns subjected to biaxial loading. A non-linear procedure is developed and described for the analysis of these columns where both the material and geometric non-linearities are considered. The solution is based on an iterative procedure to predict this behavior. Throughout the analysis, bending of the column is assumed to occur about the principal axis of the cross-section and these sections are analyzed using the age-adjusted effective modulus method to include the effects of creep and shrinkage....[
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The principal objective of this research is to present a study into the time dependent behavior of slender structural concrete columns subjected to biaxial loading. A non-linear procedure is developed and described for the analysis of these columns where both the material and geometric non-linearities are considered. The solution is based on an iterative procedure to predict this behavior. Throughout the analysis, bending of the column is assumed to occur about the principal axis of the cross-section and these sections are analyzed using the age-adjusted effective modulus method to include the effects of creep and shrinkage.
The time scale is divided into increments to permit a study of the structural behavior including the on-set of cracking as lateral deflections increase with time.
To consider the validity of this analytical behavior, an experimental investigation has been conducted. The experimental investigation described involves the testing of columns subjected to varying degrees of biaxial loading. The axial force and initial eccentricities about the two axes are the major variables considered.
The analytical model and analysis show good correlation with the experimental results obtained in the study.
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