综述Moment Connection for Quick Assembly of Timber PortalFrame.pdfVIP

Moment Connection for Quick Assembly of Timber Portal Frame Buildings: Theory and Validation Felix Scheibmair1 and Pierre Quenneville, P.Eng., M.ASCE2 Abstract: This paper provides an overview of a moment connection for use in prefabricated timber portal frame buildings. The connection, d. known as the quick-connect joint, uses rods housed in timber sleeves that are placed on the outside of the main portal members to create a e v semirigid moment connection similar to those used in steel portal frames. Timber sleeves are connected to the main portal members using r e s e fully threaded, self-drilling timber screws that have high strength and stiffness characteristics. These characteristics limit connection slip r s t and limit joint rotation. The quick-connect connection allows manufacture to take place offsite, thus reducing onsite plant and labor costs. h g i r A proposed design procedure is introduced in this paper. This procedure uses individual component deflections to calculate the overall l l a ; rotation of members at the joint. Accurate rotation predictions allow for more efficient member design. Full-scale testing of a timber beam y l n to steel column, and timber beam to timber column knee joint, is discussed. Results show that the quick-connect joint does not constrain the o e s portal member sizes. Full-scale test results are used to verify the proposed design procedure. Test and analytical results show good correlation. u l a The authors believe the quick-connect connection allows for more efficient and competitive design, manufacture, and erection of timber portal n o s frame buildings by providing a joint and design procedure that is as easily used as those in the steel indust