摩擦接合型コネクタを用いたスギ集成材と鋼板によるハイブリッド部材の軸圧縮特性に関する実験研究

概要

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Massive amount of Japanese cedar trees planted in Japan in 1950's are recently ready to be cut for usage, and various techniques utilizing such domestic cedar are required. However, for cedar timber has less stiffness and strength than American pines, combination with steel to provide composite members will be one of the effective methods to expand the structural variations. In other times, a composite member that thin steel plate was sandwiched between two cedar-glulam-timbers using shear-ring connectors and bolts was developed. In case of shear-ring connector, matter of initial backlash and work to build up the composite member occurred. Improvement connectors of friction joint were developed. In this study, axial compression tests were conducted again to determine the compression characteristic using friction connectors and equations for estimating were proposed again. Friction connector has higher shear stiffness compared to shear-ring connector, and is able to cancel the initial backlash and built up easily. In case of friction connector, two glulam timbers strain 40% of axial force which composite member strains. It is possible to demonstrate their prediction capability against axial compression load with sufficient accuracy by estimating shear stiffness of friction connector appropriately.
一般社団法人日本建築学会の論文
2007-03-20