节点24_Improved Analysis of Timber Rivet Connections.pdfVIP

Improved Analysis of Timber Rivet Connections 1 2 3 Douglas C. Stahl, M.ASCE ; Ronald W. Wolfe ; and Marshall Begel Abstract: Timber rivets are fasteners for glued-laminated timber construction that were first sanctioned for use in the United Stated by adoption in the 1997 National Design Specification for Wood Construction NDS. Rivet connections can exhibit a brittle failure when a volume of wood bounded by the perimeter of the rivets pulls out from the timber, or a ductile failure due to a combination of fastener yielding and localized wood crushing. The NDS approach to the former failure mode is so complex that closed form solution is not . d e possible and designers must refer to limited tabular data, and the NDS approach to the latter failure mode is inconsistent with the approach v r e s used for other dowel fasteners. This paper describes an improved analysis based on the capacity of wood failure planes and the e r s well-established dowel fastener yield model. Results of tests of large rivet connections highlighting the crossover from ductile to brittle t h g i failure modes verify the analysis. In addition, these results provide the first data for timber rivets in Southern Pine glued-laminated timber. r l l a ; DOI: 10.1061/ASCE0733130:81272 y l n o e CE Database subject headings: Timber construction; Laminated wood; Dowels; Connections; Wooden structures. s u l a n o s r e Introduction The proposed analysis addresses three significant sho