European stiffened angle connections: Numerical study. (13th September 2017)

• Record Type: Journal Article
• Authors: Reinosa, José M.; Loureiro, A.; Gutiérrez, R.; López, M.
• Is Part Of: Ce/papers. Volume 1:issue 2/3(2017)
• Page Start: 786
• Page End: 790
• Publication Date: 2017-09-13
• Subjects: Semirigid -- Angle Connections -- Finite Element Modeling -- Sustainable Design; Civil engineering -- Periodicals; 624
• DOI: 10.1002/cepa.118
• Languages: English
• ISSNs: 2509-7075

Abstract

ABSTRACT: It is a fact, from experimental observations, that all connections used in current practice possess stiffness which fall between the extreme cases of fully rigid or ideally pinned joints. The characterization of the real semi‐rigid behavior of connections must be properly modeled in order to reliably predict the response of the structural frame. The use of bolted cleat angle connections is characterized by substantial economical benefits essentially due to the ease in the erection process. Moreover, this kind of connection enhances both deconstructability and reusability since it preserves the independence of the members. Finally, angle connections are highly recommended for designing in seismic areas instead of welded connections to avoid brittle fracture. One of the main parameters in connection design is the joint stiffness. The initial stiffness of angle connections could be increased by introducing stiffeners in the joint design. In this paper, numerical a study for the analysis of the rotational stiffness of stiffened angle connections is dealt with. This work was carried through on semi‐rigid angle connections with stiffened top and seat angles. Advanced 3D Finite Element models were developed on the geometrical configuration of future experimental tests. On the other hand, the numerical results of varying the joint configuration are discussed. Once these FE simulations had been checked with the experimental tests, they can be used to undertake future parametric studies on the main joint parameters and also for the validation of analytical proposals that can be very useful in common practice of joint design.