Earthquake testing and response analysis of concentrically-braced sub-frames

Evaluating Response Modification Factors of Concentrically Braced and Special Moment Steel Frames in Duplex Buildings

Response modification factor (R-factor) is one of the seismic design parameters to consider nonlinear performance of building structures during strong earthquake. Relying on this, many seismic design codes led to reduce earthquake loads imposed to the structure. The present paper tries to evaluate the R-factors of conventional concentric braced frames (CBFs) and special moment frames (MRFs) in ...

Concentrically Braced Frames: European vs. North American Seismic Design Provisions

A critical review of seismic design provisions for concentrically braced frames (CBFs) in both European and North American (i.e. US and Canadian) codes is presented in this paper. Indeed, even though those codes are based on capacity design philosophy, different requirements and different approaches are used to guarantee the hierarchy of resistances between dissipative and non-dissipative eleme...

Evaluation of 2D concentrically braced frames with cylindrical dampers subjected to near-field earthquake ground motions

Near field earthquakes have imposed major damage to buildings in the past years. In some cases, the intensity of such damage is too considerable to be disregarded. The most effective way to improve seismic performance of buildings is applying a seismic control technique. The cylindrical friction damper is one of these methods, which has become popular for its desirable performance in the energy...

Nonlinear Analysis of Knee-braced Frames under Earthquake Loadings

Nonlinear Analysis of Knee-braced Frames under Earthquake Loadings