Study on Mechanical Behavior of Hybrid Member Composed of Cedar-Glulam Timber and Steel Plate with Friction Connector

Abstract eng:
A hybrid member composed of a thin steel plate sandwiched between two glued-laminated cedar timber members has been developed and studied. The steel and timber parts were connected with shear-ring connectors and bolts. When using the shear-ring connector, the initial clearance between the shear-ring and the glulam timber needs to be wider to enable the hybrid member to be built up. Thus, the connectors were improved by introducing a friction joint. In this study, shear tests were conducted on the friction connectors, and axial compression tests were conducted on the hybrid members to determine the compression characteristics, and new estimation equations were proposed. The stiffness of hybrid members with friction connectors was higher than that of members with shear-ring connectors, and the former could be easily built up. The characteristics of these members were determined by shear tests and axial compression tests. It was thus possible to predict their axial compressive strength with sufficient accuracy by evaluating the shear strength and the shear stiffness of the connector by appropriately considering the connectors’ characteristics.

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