Gusset connectionPerfobond strip connectorsWelded shear studsSeismic designAs a high-performance hysteretic damper, buckling-restrained braces (BRBs) can significantly improve the seismic behavior of engineering
According to previous studies, the strength, stiffness, and mass irregularity significantly degrade the seismic behavior of these structures [26], [27]. Special attention is necessary in the design of such irregular buildings. The proposed NL spine frame system is expected to distribute damage ...
then the seismic performance of the frame is investigated under pushover, cyclic, time history, and incremental dynamic analysis (IDA), and then the results are compared with the behavior of similar portal frame in two conditions without the brace and diagonally braced with the steel-HSS brace....
Under earthquake loading, conventional CBFs dissipate energy by yielding and buckling of braces and yielding of gusset plates. This behavior results in significant damage to the CBF after the earthquake and residual lateral drift. A new seismic lateral force resisting system, known as a self-...
gusset plate connectionsbraced framesexperimental behaviorBraced frames are one of the most economical and efficient seismic resisting systems yet few full-scale tests exist. A recent research project, funded by the National Science Foundation (NSF), seeks to fill this gap by developing high-...
gusset plate connectionsinelastic behaviorfinite element modelcyclic loadingvertical unbalanced forceAn inverted V-braced frame is one of the most widely used CBFs (Concentrically Braced Frames) owing to many advantages in constructional design. The seismic behaviors of inverted V-braced frames is that ...
Despite excellent seismic behaviors can be ensured in many BRBs and gusset plates, more high-resilience components require further research. The BBR-to-frame interaction behavior, story shear force distribution relationship, strength and stiffness requirement, and BRB fatigue damage should be taken into...
(1) the seismic performance of a sandwiched BRB installed in a frame, (2) the effects of free-edge stiffeners and dual gusset configurations on the corner gusset behavior, (3) the frame and brace action forces in the corner gusset, and (4) the failure mode of the BRBF under the ...
In SCBFs, the brace elements are designed to dissipate the large amount of energy as a Structural Fuse (SF) through inelastic deformation and post-buckling behavior of the brace element while the gusset plates are designed to tolerate the imposed forces of the braces and sustain the large ...
The superstructure and the isolation system are coupled [10], and therefore, if the superstructure experiences moderate nonlinear behavior under severe ground motions, the overall building response is affected. However, a critical issue in practical seismic design is to ensure that the base-isolated ...