Pretensioning of Single-Crossarm Stayed Columns

by H. H. Hafez, Research Asst.; Dept. of Civ. Engrg., Univ. of Windsor, Windsor, Ontario, Canada,
John S. Ellis, (M.ASCE), Prof.; Dept. of Civ. Engrg., Royal Military Coll. of Canada, Kingston, Ontario, Canada,
Murray C. Temple, (M.ASCE), Assoc. Prof.; Dept. of Civ. Engrg., Univ. of Windsor, Windsor, Ontario, Canada,


Serial Information: Journal of the Structural Division, 1979, Vol. 105, Issue 2, Pg. 359-375


Document Type: Journal Paper

Discussion: Smith Erling A. (See full record)
Closure: (See full record)

Abstract: The effect of the initial pretension in the stays on the buckling load of a single-crossarm stayed column is presented. Previous research on stayed columns has been concerned only with the maximum buckling load. The initial pretension in the stays required to obtain this buckling load had not been determined. A geometrical study of a single-crossarm stayed column was carried out to determine this effect. The minimum effective, optimum, and maximum possible pretensions are defined and equations are given for their determination. Experimental results are presented for the buckling loads obtained by varying the initial pretension in the stays. Numerical examples are used to demonstrate the influence of three of the stayed column parameters on the minimum effective and optimum pretensions, as well as the maximum buckling load. The theoretical and experimental results indicate the great influence of the initial pretension on the buckling load of a single-crossarm stayed column.

Subject Headings: Pretensioning | Buckling | Load factors | Columns | Maximum loads | Geometrics | Numerical methods | Parameters (statistics)

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