investigating of the seismic behavior of the strap-braced light-weight steel framing

investigating of the seismic behavior of the strap-braced light-weight steel framing

 this paper presents a nonlinear finite element analysis in order to optimize the seismic of strap-braced light-weight steel framing. light-weight steel framing structures during earthquakes receive the amount of small lateral force due to their lightweight. in order to investigate the seismic behavior of these buildings, initially a strap-braced cold-formed steel framing to the dimensions of 2.4×2.4 m is analyzed using the finite element ansys software and the results are compared with the experimental model. then consider the three other models than strap-brace, we obtain the most optimal braced mode. according to the results, the strap-brace with brackets in four interior corners of the frame showed better performance than other braced frames. frames studied here are unlined, and the positive effect of gypsum board on the lateral performance of the frame is ignored. this is due to the fact that post-earthquake observations of timber frame structures in the northridge earthquake have shown that many gypsum board shear walls failed under imposed dynamic load . also, some design codes have recommended neglecting the gypsum board's contribution and relying only on the bare steel frames.