Results from a three-year research project on the performance of structural systems with glulam riveted connections in non-residential buildings are presented in this report. The emphasis is placed on use of timber rivets in structural systems such as braced frames and moment resisting frames.
Initially a comprehensive literature survey on the topic is given, including the historical development of the fastener and previous research work. This is followed by state-of-the-art information on the static and dynamic behaviour of glulam riveted connections in heavy timber construction. Research results include information on all phases of the project:
· Bending and tension tests to determine the material properties of timber rivets as fasteners;
· Embedment tests of timber rivets in various wood products parallel and perpendicular to grain or strand;
· Quasi-static monotonic compression tests on small riveted connections in four different wood products loaded parallel and perpendicular to grain or strand;
· Quasi-static monotonic and cyclic tests on axially loaded members with riveted connections used in braced timber frames;
· Cyclic tests on portal moment resistant frames with riveted connections in four different wood products;
· An analytical methodology to quantify the dynamic performance of braced frames with timber rivets;
· Force modification factors for braced timber frames with riveted connections according to the NBCC.
· Force modification factors for portal moment resisting frames with riveted connections according to the NBCC;
Results of the study cover riveted connections in four different engineered wood products: Glulam, Laminated Veneer Lumber (LVL), Parallel Strand Lumber (PSL), and Laminated Strand Lumber (LSL). It should be noted that a comparison of the behaviour of riveted connections in different wood-based products was not the objective of the study. Consequently, the material sampling plan included one manufacturer per product.
The study provides relevant information that may be used to produce technical guidelines for design and construction of both types of frames with riveted connections. Such design guidelines and performance characteristics currently exist for structural systems in other construction materials such as steel and concrete, while with exception of wood-frame shear walls, they are virtually nonexistent for other wood–based structural systems.