Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Web bearing design of cold-formed austenitic stainless steel un-lipped channels under localised interior loading
https://orcid.org/0000-0002-4630-8612
Abstract The high corrosion resistance, recyclability, ductility, and durability of stainless steels make them appealing for use in the construction industry. However, when used as structural channel sections, they are subject to localised failure in the web. This study aims to evaluate the structural behaviour of cold-formed austenitic stainless steel unlipped channels under localised interior loading. The results of conducting a novel testing programme with 21 new tests on such channels with different cross-section sizes and thicknesses are presented. Then a non-linear quasi-static Finite Element (FE) model is developed. The FE model is validated against experimental test results and found to demonstrate a good agreement in terms of bearing capacity and failure modes. It is found that no cold-formed stainless steel standard provides web bearing capacity equations for the localised interior loading (IL) that apply when simulating a floor joist on a solid foundation. The web bearing capacities are compared with capacities determined from the literature (including DSM). It is found that for the case of unlipped channels (unstiffened flanges), the current equations are unreliable and unconservative by up to 36%. The experimental investigation shows that, the American specification (SEI/ASCE 8:2002) is unconservative as much as 41%. Using both experimental and numerical results from this study, a new design equation is proposed for austenitic stainless steel unlipped channels under localised interior loading.
Highlights Novel experimental programme of austenitic stainless steel channels under localised interior loading (IL), simulating a floor joist on a solid foundation. A test report of 21 channels with unstiffened flanges and with different cross-section sizes are presented. Nonlinear Finite Element models with dynamic implicit integration are developed to evaluate the effects of channel thickness, height and bearing plate load length. While no design equations are available in the stainless steel standards for design of such channels, current equations in the literature are unreliable and unconservative by 41%. New design equation is proposed and its reliability is demonstrated under IL loading.
Web bearing design of cold-formed austenitic stainless steel un-lipped channels under localised interior loading
https://orcid.org/0000-0002-4630-8612
Abstract The high corrosion resistance, recyclability, ductility, and durability of stainless steels make them appealing for use in the construction industry. However, when used as structural channel sections, they are subject to localised failure in the web. This study aims to evaluate the structural behaviour of cold-formed austenitic stainless steel unlipped channels under localised interior loading. The results of conducting a novel testing programme with 21 new tests on such channels with different cross-section sizes and thicknesses are presented. Then a non-linear quasi-static Finite Element (FE) model is developed. The FE model is validated against experimental test results and found to demonstrate a good agreement in terms of bearing capacity and failure modes. It is found that no cold-formed stainless steel standard provides web bearing capacity equations for the localised interior loading (IL) that apply when simulating a floor joist on a solid foundation. The web bearing capacities are compared with capacities determined from the literature (including DSM). It is found that for the case of unlipped channels (unstiffened flanges), the current equations are unreliable and unconservative by up to 36%. The experimental investigation shows that, the American specification (SEI/ASCE 8:2002) is unconservative as much as 41%. Using both experimental and numerical results from this study, a new design equation is proposed for austenitic stainless steel unlipped channels under localised interior loading.
Highlights Novel experimental programme of austenitic stainless steel channels under localised interior loading (IL), simulating a floor joist on a solid foundation. A test report of 21 channels with unstiffened flanges and with different cross-section sizes are presented. Nonlinear Finite Element models with dynamic implicit integration are developed to evaluate the effects of channel thickness, height and bearing plate load length. While no design equations are available in the stainless steel standards for design of such channels, current equations in the literature are unreliable and unconservative by 41%. New design equation is proposed and its reliability is demonstrated under IL loading.
Web bearing design of cold-formed austenitic stainless steel un-lipped channels under localised interior loading
https://orcid.org/0000-0002-4630-8612
Abstract The high corrosion resistance, recyclability, ductility, and durability of stainless steels make them appealing for use in the construction industry. However, when used as structural channel sections, they are subject to localised failure in the web. This study aims to evaluate the structural behaviour of cold-formed austenitic stainless steel unlipped channels under localised interior loading. The results of conducting a novel testing programme with 21 new tests on such channels with different cross-section sizes and thicknesses are presented. Then a non-linear quasi-static Finite Element (FE) model is developed. The FE model is validated against experimental test results and found to demonstrate a good agreement in terms of bearing capacity and failure modes. It is found that no cold-formed stainless steel standard provides web bearing capacity equations for the localised interior loading (IL) that apply when simulating a floor joist on a solid foundation. The web bearing capacities are compared with capacities determined from the literature (including DSM). It is found that for the case of unlipped channels (unstiffened flanges), the current equations are unreliable and unconservative by up to 36%. The experimental investigation shows that, the American specification (SEI/ASCE 8:2002) is unconservative as much as 41%. Using both experimental and numerical results from this study, a new design equation is proposed for austenitic stainless steel unlipped channels under localised interior loading.
Highlights Novel experimental programme of austenitic stainless steel channels under localised interior loading (IL), simulating a floor joist on a solid foundation. A test report of 21 channels with unstiffened flanges and with different cross-section sizes are presented. Nonlinear Finite Element models with dynamic implicit integration are developed to evaluate the effects of channel thickness, height and bearing plate load length. While no design equations are available in the stainless steel standards for design of such channels, current equations in the literature are unreliable and unconservative by 41%. New design equation is proposed and its reliability is demonstrated under IL loading.
Web bearing design of cold-formed austenitic stainless steel un-lipped channels under localised interior loading
Yousefi, Amir M. (Autor:in) / Samali, Bijan (Autor:in) / Yu, Yang (Autor:in) / Roy, Krishanu (Autor:in)
Thin-Walled Structures ; 191
10.06.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch