Development and experimental investigation of a space frame connector

Abstract

A recently developed space frame connector, and the experimental investigation carried out to evaluate its strength and failure mechanisms are presented in this paper. Four sizes of connectors, namely 48 mm, 60 mm, 76 mm and 89 mm joints, are tested to failure. The characteristic and failure behaviour of each connector under the principal actions for axial tension and compression as well as the secondary effect of bending at the joint are observed and reported. Joint and member capacities are also assessed analytically. Useful structural parameters such as rotational stiffnesses of the joints, buckling capacities of members as well as tension and bending capacities are evaluated and compiled for easy reference. Comparison of experimental results and predicted values show reasonably good agreement.