Load-carrying capacity of bolted end-plate connections with elastomeric interlayer. (May 2020)

• Record Type: Journal Article
• Authors: Nasdala, Lutz; Blust, Andreas; Jüngel, Nikolas
• Is Part Of: Journal of constructional steel research. Volume 168(2020)
• Publication Date: 2020-05
• Subjects: End-plate connection -- Thermal separation -- Elastomeric bearing -- Biaxial creep tests -- Nonlinear viscoelasticity; Steel, Structural -- Periodicals; Building, Iron and steel -- Periodicals; Acier de construction -- Périodiques; Construction métallique -- Périodiques; 624.1821
• DOI: 10.1016/j.jcsr.2020.105986
• Languages: English
• ISSNs: 0143-974X

Abstract

Abstract: For the design of bolted end-plate connections with elastomeric interlayer, according to Eurocode 3, only the flanges can be considered for a transmission of the internal forces. Our investigations show that the webs should be taken into account as well. They contribute to a more even stress distribution in the elastomeric bearing and, thus, enable higher loads with constant dimensions. The FE simulations are based on one- and two-dimensional tensile and compression tests to determine the complex material behavior of the elastomeric interlayer. Good agreement between measurement and simulation is obtained, which in particular can be attributed to the material law: a nonlinear viscoelastic approach combined with the hyperelastic Marlow model. It has been found that the friction coefficient and the Poisson's ratio of the elastomeric interlayer have a significant influence on the load carrying capacity of bolted end-plate connections. Highlights: Biaxial creep and relaxation experiments Nonlinear viscoelastic approach combined with hyperelastic Marlow model. FE simulation of thermally separated end-plate connections without and with web. Proposal of correction factor to increase the permissible stresses.