Failure in cold-formed steel beams is generally initiated by one of three instabilities: local, distortional, or lateral-torsional buckling. For cold-formed steel joists, purlins, or girts, when the compression flange is not restrained by attachment to sheathing or paneling, distortional buckling may be the predominant failure mode. Experimental results on cold-formed steel beams with unrestrai...

Abstract Tall buildings have unique seismic challenges, particularly the P-delta effect. This can cause an increase in loads on certain parts of structure, leading to potential instability or collapse. The solution is use buckling restrained bracing (BRB) systems, which improve lateral strength structure and control present study aimed determine effectiveness various brace configurations reduci...

This paper presents a design application of the proposed generalized response spectrum analysis (GRSA)-based seismic optimization method to large metal spatial structure (constructed in Japan) where rigid diaphragm assumption is not available and displacement responses are disproportionally distributed story. It also discusses optimal mixed placement capacity distribution buckling-restrained br...

Within multiple design challenges, the lateral torsional buckling (LTB) analysis and stability check of structural glass members is a well-known issue for design. Typical examples can be found not only in slabs with slender bracing but also facades walls, where fins are used to brace vertical panels against input pressures. Design loads such as wind suction give place possible LTB LR at tension...

1. Abstract The distributed Genetic Algorithm (GA) for PC cluster with multi-core-CPUs is proposed as a time reducing method for determining the schemes of retrofitting existing buildings with Buckling restrained Brace (BRB). Nondominated Sorting Genetic Algorithm-II (NSGA-II), one of the derivative evolutionary algorithm in heuristic method, was applied since the optimization problem have a mu...