Optimum Design of Columns Supported by Tension Ties

by Hagen R. Mauch,
Lewis P. Felton,

Serial Information: Journal of the Structural Division, 1967, Vol. 93, Issue 3, Pg. 201-220

Document Type: Journal Paper

Abstract: A rational procedure for the optimization, on a weight basis, of columns supported by tension ties is developed. The tension ties provide a degree of intermediate elastic support which renders these systems more efficient than simple tubular columns in regions of low structural index P/L2. Two different configurations are considered. The first has one intermediate support-plane, and is stable up to a compressive load at which the second buckling mode occurs. The second has three intermediate support-planes and remains stable up to a compressive load corresponding to the fourth mode shape. Results are presented in such a fashion that conditions under which tie supported columns are more efficient than simple columns are readily apparent, and such that all design parameters are obtainable with a minimum of computational effort. Examples are included. Results indicate that, in favorable circumstances, columns supported by tension ties may be constructed with approximately half the weight required for a simple column capable of transmitting the same load over the same distance.

Subject Headings: Columns | Tension members | Load factors | Compression | Professional societies | Elastic analysis | Buckling | Parameters (statistics) |

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