Abstract
AbstractHollow section braces are often adopted in steel frame structures because of their superior performance. To connect tubular members with framing elements, field-bolted connections of the slotted-in single splice plate and gusset plate are majorly used because of their ease of construction. However, the eccentricity between the splice and gusset plate axes reduces the compressive strength of the brace and induces local connection failures under seismic excitations. To improve the compressive strength, this paper proposes a new connection configuration for circular hollow section braces in which cruciform rib-stiffened splice plates are eccentrically installed such that the gusset plate axis coincides with the brace axis. The concept of the proposed connection was first described with theoretical considerations. To demonstrate the effectiveness of the proposed connections, compressive loading tests and subsequent cyclic loading tests were conducted for four test specimens. Furthermore, finite element analyses with long-brace models were performed to demonstrate the good performance of the proposed connection for a wide range of slenderness ratios.
Funder
japan society for the promotion of science
Publisher
Springer Science and Business Media LLC
Subject
Geophysics,Geotechnical Engineering and Engineering Geology,Building and Construction,Civil and Structural Engineering
Reference22 articles.
1. ANSYS (2014) User’s manual, ver. 15.0, ANSYS Inc., USA
2. Asada H., Okazaki T., Tanaka T., Nakai S., Hashioka S. (2018) “Effect of out-of-plane stiffness and strength on buckling strength of HSS brace with single-shear bolted joints”, Journal of Structural and Construction Engineering, Architectural Institute of Japan, 83:309–319. (in Japanese). https://doi.org/10.3130/aijs.83.309
3. Chou CC, Liou GS, Yu JC (2012) Compressive behavior of dual-gusset-plate connections for buckling-restrained braced frames. J Constr Steel Res 76:54–67. https://doi.org/10.1016/j.jcsr.2012.03.003
4. de Oliveira J, Packer JA, Christopoulos C (2008) Cast steel connectors for circular hollow section braces under inelastic cyclic loading. J Struct Eng Am Soc Civil Eng 134:374–383. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:3(374)
5. Design standard for steel structures based on allowable stress concept (2017), Architectural Institute of Japan, English version for 2005 Edition