Concept of Tubular-Join Design

by Jack G. Bouwkamp,


Serial Information: Journal of the Structural Division, 1964, Vol. 90, Issue 2, Pg. 77-102


Document Type: Journal Paper

Abstract: The radial flexibility of the chord tube, the relative outside dimensions of the connecting members, and the relative position of the web members in the joint are major influences on the elastic and ultimate strength of tubular connections. The fully interwelded joint with profiled web members appears to be superior in the elastic-load range. The elastic range can be increased by interwelding the incoming web members. This arrangement consequently results in a direct load transfer between these members and subsequently prevents the development of high bending stresses in the chord tube wall. The ultimate load capacity of such a joint also will be increased considerably. For statically loaded joints, gusset plates and small diameter tubes with cropped ends can be used successfully, provided that the static load intensity is moderate. For severe static load applications and particularly for dynamic load conditions, joints with directly interwelded web members can be expected to be most efficient structurally.

Subject Headings: Load bearing capacity | Dynamic loads | Ultimate loads | Joints | Webs (structure) | Elastic analysis | Load transfer

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