Document Type
Thesis
Date of Award
1-31-1988
Degree Name
Master of Science in Civil Engineering - (M.S.)
Department
Civil and Environmental Engineering
First Advisor
C.T. Thomas Hsu
Second Advisor
Michael Bruno
Abstract
The understanding of the strength and deformational behavior of column base plates is of paramount importance in the analysis and design of pipe and pressure vessel supports. Both elastic and plastic stress analyses, using ANSYS computer program to simulate the strength and deformation of column base plates anchored over a concrete block with an eccentric load, are presented in this study. The work presented here includes the effects of bolt pretension and prying actions of stressed flexible plates.
The analytical results were benchmarked with the published test data by D.P. Thambiratnam and P. Paramasivam for the maximum longitudinal strain along the longitudinal centerline of the base plate top surface subjected to a tested value of yield load. The contours of the maximum principal stress at the theoretical and tested yields were compared. The yield criterion assumed in the tests by neglecting all strain components other than the normal strains in the longitudinal direction, and the impractical use of tiny element sizes in the analysis to pinpoint the exact locations of strain measurements in the tests were found to be a major reason for discrepancies in comparison between the theoretical and experimental data.
In addition, the deflection of the base plate as functions of plate thickness and load eccentricity was analyzed in both elastic and plastic ranges. Relative magnitudes of the strain components along the longitudinal and transverse critical sections were also evaluated in this study.
Recommended Citation
Sheu, Ja-Pung, "Column base plate under eccentric loading" (1988). Theses. 3263.
https://digitalcommons.njit.edu/theses/3263
