Finite element analysis of steel beam-hollow column angle connection with blind bolts

Document Type : Research Note

Authors

1 structure department, civil engineering faculty, islamic azad university najafabad branch, najafabad, iran

2 Department of civil engineering , civil engineering faculty, Najafabad branch, islamic azad university, Najafabad, Iran

Abstract

In order to solve the problem of access to inside of hollow columns for tightening bolts and achieving a suitable connection both in terms of rigidity and stiffness and in terms of the proper behavior, various solutions have been suggested by researchers. One of these solutions is steel beam to hollow column connection by an angle and blind bolts. This connection can be made in different types with different number of blind bolts. Connection with flange angle and blind bolts have showed proper and semi-rigid behaviour.In this research, the effect of changing various parameters on the behavior of steel beam-hollow column connection with angle and blind bolts was investigated under monotonic loading. The nonlinear finite elements method and Abaqus software was considered and solid three-dimensional elements as continuum elements was supplied in connection models. The behavior of connection was studied by changing various parameters such as beam height, column thickness, length of angle leg and number of blind bolts. The results show that increasing height of the beam, thickness of the column and length of angle leg raises the connection’s rigidity. Also, increasing the above mentioned parameters leads a simple connection toward semi-rigid connection. Also, by studying the models, the rigidity degree of most models except a few of them, which is less than 20%, is between 20% and 90%. Considering the rigidity degree, studied models behaved as semi-rigid connections.

Keywords

Main Subjects


[1] Garlock, M; Ricles, J; Sause R.(2003). Cyclic load tests and analysis of bolted top and seat angle connection. Journal of  Structure Engineering, Amer Soc Civil Engineer; 129(12):1615–25
[2] Tabsh, SW; Mourad, S.(1997). Resistance factors for blind bolts in direct tension. Engieering Structure;12(19):995–1000.
[3] Klippel, S.(1998).Recent design developments with blind mechanically operated bolt systems for use with hollow section steelwork. Journal Constructure Steel Research, 46(1–3):267–8.
[4] Occhi, F.(1996). Hollow section connections using (Hollofast) HolloBolt expansion bolting. CIDECT Report 6G-14E/96.
[5] Korol, RM; Ghobarah, A; Mourad S. Blind bolting W-shape beams to HSS columns.(1993). Journal Structure Engineering ASCE;119(12):3463–81.
 
[6] Liu, Y; Málaga-Chuquitaype, Elghazouli, AY.(2012). Behaviour of beam-to-tubular column angle connections under shear loads. Engineering Structure;42:434–56
[7] Elghazouli,  AY; C. Málaga - Chuquitaype ; J.M, Castro , A.H, Orton.(2009).Experimental  monotonic and cyclic  behaviour  of blind-bolted angle connections. Engineering Structures; 31 2540_2553
[8] Lindapter International Ltd. Type HB hollo-bolt for blind connection to structural steel and structural tubes Bradford (England); 1995.
[9] ECCS, European Convention for Constructional Steelwork. Recommended testing procedure for assessing the behaviour of structural steel elements under cyclic loads. Brussels; 1986.
[10] Tizani, W; Wang, ZY & Hajirasouliha, I.(2013). Hysteretic performance of a new blindbolted connection to concrete filled columns under cyclic loading An experimental investigation. Engineering Structures, 46(2013)535-546.
[11]  Jingfeng, Wang; LinZhang, B.F; Spencer, Jr.(2013). Seismic response of extended end plate joints to concrete-filled steel. Engineering Structures, 49876–892.
[12] AISC. Hollow structural section connections manual. Chicago (Illinois, USA):American Institute of Steel Construction; 1997.
[13] Liu, Y; C. Málaga-Chuquitaype; AY,  Elghazoul.(2012). Behaviour of beam-to tubular column angle connections under shear loads; Engineering Structures, 42(2012) 434-456.