چكيده به لاتين
To calculate and determine the seismic needs of structures against severe earthquakes, it is necessary to perform nonlinear analyzes, but since the analysis and design of non-reciprocal structures is a complicated and time consuming issue, most regulations violate the design and the elasticity of design, with no significant accuracy Substitute for non-broadcast analysis and design. The conventional method of seismic design of structures in the regulations is based on the static equation method and the design of the cut-off of the design using a linear spectrum. To determine the base cutter, one of the effective coefficients is the coefficient of behavior, the coefficient of behavior is used to determine the lateral force equivalent to earthquake force that is used to design earthquake resistant structures.
This dissertation has been used to calculate the metal construction behavior along with the special steel convergent bracing. For this purpose, the ETABZ 2016 software was used for analysis and design. To measure the height of the four models, 2, 4, 8, and 16 floors, the two-dimensional sample and the three-dimensional sample were used to see the effect of the ceiling, and to take into account the effect of the mass change in the aperture, a cavity was used in the corners of the building in a three-dimensional model. Three models (three-dimensional without cavity, three-dimensional with cavity and two-dimensional) were used in four different heights, in total 12 models. The models were first designed according to Iran's standards and standards and then subjected to a nonlinear static analysis and their coefficient of behavior was calculated and for the accuracy of the graphs presented in the nonlinear static analysis, a four-story two-dimensional model is introduced for nonlinear dynamic analysis and We compared the charts.
Finally, the results showed that the average behavior of the building in a three-dimensional sample without openings was 4.78, with a gap of 4.53 and in a two-dimensional sample of 4.06. Considering the effect of the ceiling would lead to a higher coefficient of behavior and the building's height had a reversible effect.
