Abstract
A multi-purpose test rig is described for making the tests on scaffold couplers which were detailed in an earlier paper “The idealization of scaffold couplers for performance tests and scaffold analysis”[1]. The six basic tests are demonstrated and certain refinements in the rig are described. Some results are given to show repeatability, non-linearity, hysteresis and the effects of coupler tightening and contact conditions. Finally a complete stiffness matrix is given for the initial linear behaviour of a particular coupler.
Résumé
On décrit un dispositif d'essai à plusieurs fins pour essayer les raccords d'échaffaudage qui ont été décrits dans l'article précédent. Cette description inclut les six essais de base et certains perfectionnements de l'appareillage. Quelques résultats montrent la répétabilité des mesures, la non-linéarité, l'hystérésis et les effets de serrage du raccord ainsi que des conditions de contact. Enfin, on présente une matrice de rigidité complète pour le comportement linéaire initial d'un raccord donné.
Similar content being viewed by others
References
Lightfoot E., Bhula D. N..—The idealization of scaffold couplers for performance tests and scaffold analysis Materials and Testing, Research and Testing, vol. 10, no 57, May–June 1977.
B.S. 1139.Specification for metal scaffolding. British Standards Institution, 1964.
British Standards Institution.Draft standard for couplers and accessories for working scaffolds made of steel tubes—requirements and test procedures (Document pr EN 74).
Duggan D. M..—A limit state appraisal of scaffold towers. D. Phil. thesis, 1975, Oxford University.
Lightfoot E., Le Messurier A.—Instability of space frames having elastically-connected and offset members. Second International Conference on Space Structures, University of Surrey, Guildford, England, September 1975.
Wittrick W. H., Williams F. W..—A general algorithm for computing natural frequencies of elastic structures. Q. J. of Mech. and App. Maths, Vol. XXIV, Part 2, August 1971.
Rights and permissions
About this article
Cite this article
Lightfoot, E., Bhula, D. A test rig for scaffold couplers. Mat. Constr. 10, 168–173 (1977). https://doi.org/10.1007/BF02474850
Issue Date:
DOI: https://doi.org/10.1007/BF02474850