Date of Award

1993

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Civil and Environmental Engineering

First Advisor

Temple, M. C.,

Keywords

Engineering, Civil.

Rights

CC BY-NC-ND 4.0

Abstract

It is common practice in Canada to balance fillet welds on angle members about the projection of the centroidal axis on the welded leg. In some instances, however, due to certain design restrictions, there is no room to place a balanced weld and the designer is forced to use an unbalanced weld. The Canadian Standards Association, as well as the American Specification and the British Standard, has approved this type of unbalanced connections. This approval was based on research carried out on tension members by Gibson and Wake in 1942. As a result of this research it has been assumed that the same conclusion applies to compression members. In order to determine the effects of the weld patterns on the behaviour of angle compression members, a series of ultimate compression tests and finite element analysis were performed. The experimental procedure consisted of applying a compressive load on two 50.8 x 50.8 x 6.35 mm (i.e. 2 x 2 x 1/4 in.) angle members connected at the ends to HSS's with balanced and unbalanced weld patterns. Two different column heights were used which resulted in slenderness ratios that fall in the "slender" and "intermediate" range. The load was applied gradually until failure occurred in the specimen. The effect of unbalanced welds seems to be beneficial for slender angles but has a detrimental effect on the load carrying capacity of intermediate range angles. As the weld pattern changes from balanced to an unbalanced weld, the flexibility of the angle increases. The experimental failure loads are compared with the results from a finite element model. The welded angles were also designed as beam-columns according to CAN/CSA S16.1-M89 and the results were compared with the experimental failure loads. (Abstract shortened by UMI.)Dept. of Civil and Environmental Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1993 .S355. Source: Masters Abstracts International, Volume: 32-02, page: 0674. Adviser: M. C. Temple. Thesis (M.A.Sc.)--University of Windsor (Canada), 1993.

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