Steel Buildings in Europe

5 - 80 Appendix B Worked Example: Design of a truss node with gusset 1 of 44 Made by CZT Date 12/2009 Calculation sheet Checked by DGB Date 12/2009 The truss includes several types of joints: splice joints by bolted cover plates, T joints and KT joints. This Appendix gives the detailed design of a KT joint located on the upper chord, as shown in Figure B.1. 7100 7200 8500 8600 7100 7100 4000 91 kN 136 182 182 136 136 91 kN 1 1 KT joint Figure B.1 Location of the KT joint The values of the internal forces in the truss members (see Table B.1) result from a gravity load case. This load case corresponds to a ULS combination of actions, determined according to EN 1990. Table B.1 KT joint – Internal forces in the truss members Member N (kN) V (kN) M (kNm) Diagonal 35 -609,4 -1,27 0 Diagonal 24 406,9 1,03 0 Post 36 2,6 0 0 Chord 101 -413,8 1,25 -0,46 102 101 24 36 35 136 kN Chord 102 -1084 1,26 -0,09 1. General presentation of KT joint The KT joint studied consists of the following connections: the gusset to web chord welded connection and the angles to gusset bolted connection (see Figure B.2 and Figure B.3). Both connections should be verified according to the rules from EN 1993-1-1 and EN 1993-1-8. The gusset to web chord welded connection is a plate welded perpendicular to the web of the chord by two fillets welds (See Figure B.7). The angles to gusset bolted connection is composed of two back-to-back double-angle diagonal members (See Figure B.4) and a single angle post member (See Figure B.5). There are three shear connections to be designed as Category C.