Influence of initial moisture induced stresses in multiple steel-to-timber dowel joints

Autor: Carl-Johan Johansson, Johan Sjödin
Rok vydání: 2006
Předmět:
Zdroj: Holz als Roh- und Werkstoff. 65:71-77
ISSN: 1436-736X
0018-3768
DOI: 10.1007/s00107-006-0136-6
Popis: In this experimental study, multiple steel-to-timber dowel joints were first exposed to controlled climate changes. After being stored in climate chambers, the joints were loaded to failure. The major aim of the study was to investigate how and to what extent initial decrease in moisture in the joint area inducing shrinkage deformations affects the load-bearing capacity of joints of this type loaded in tension parallel to the grain. The load-bearing capacity of the joints was found to be reduced under these conditions, the decrease being greatest for joints in which steel dowels connected to a steel plate inserted into a slot in the wood restrained the shrinkage deformations during storage in the climate chamber. It was also found that the reduction in load-bearing capacity was greater and moisture-induced cracks were more frequent when the distance between the dowel rows were greater.
Databáze: OpenAIRE
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