Rotational stiffness and bending strength of steel connections in timber lattice shell

In recent years, creating lattice shell roof structures with timber members are getting popularity due to its light weight and aesthetics: However, the one of their major difficulty is the connection details. In this research, a connection details for a rectangular laminated timber with a T-shaped or H-shaped cross section with lag screws are proposed to maintain flexural rigidity and tolerance of timber single layer lattice shell roofs. Their out-of-plane flexural strength and rotational rigidity of the proposed joint are verified by full-scale experiments, followed by the buckling strength evaluation formulas including the effects of connection stiffness. © 2018 Architectural Institute of Japan. All Rights Reserved.