Finite element investigation on the structural behaviour of cold- formed steel bolted connections

摘要

A finite element model with three-dimensional solid elements was established to investigate the bearing failure of cold-formed steel bolted connections under shear. It was demonstrated(Chung and Ip. Engineering Structures 2000; 22:;1271-1284)that the predicted load-extension curves of bolted connections in alp shear tests followed closely to the measured load-extension curves provided that measured steel strengths and geometrical dimensions were used in analysis. Furthermore, it was shown(Chung and Ip. Proceedings of the Second European Conference on Steel Structures, Praha, May 1999, p.503-506)that stress-strain curves, contact stiffnesses and frictional coefficients between element interfaces, and clamping forces developed in bolt shanks were important parameters for accurate prediction of the deformation characteristics of bolted connections.