eva‎luation and comparison of seismic behavior of reinforced concrete structures with steel wind brace or steel shear wall

1/1/1900 12:00:00 AM

In this research with the title of eva‎luation and comparison of the seismic behavior of reinforced concrete structures with steel wind brace or steel shear wall, the seismic behavior of 5, 10, and 15-story reinforced concrete frames based on the above-mentioned methods under the effect of earthquakes is investigated. and Northrich with the aim of eva‎luating the most favorable method using ABAQUS software. The results of the studies showed that the use of steel wind braces for the purpose of strengthening has led to a significant increase in the stiffness of the frames, while the use of steel shear wall, which has a very high ductility, not only did not increase the stiffness, but also due to More appropriate behavior in the range of nonlinear behavior has led to significant absorption of earthquake energy, reduction of base shear and lateral displacement. The important point is that the seismic behavior of tall structures reinforced with steel shear walls is improved by increasing the height of the structure and as a result the ductility is increased several times compared to short and medium structures and the important point is that the percentage of energy absorption and reduction The base cut has a non-linear relationship with the height of the structure and increases with the increase of the height of the structure. For long frames, when the structure enters the range of non-linear behavior, the lateral displacement increases, but due to the high ductility, the energy caused by the earthquake is absorbed and consumed by the structure, which is desirable. The results of the present research showed that for the 5-story frame, the use of steel shear walls with thicknesses of 5 and 10 mm led to a reduction of 50 and 90 percent of the lateral displacement compared to the lateral displacement such as in the case of using steel braces, but for the frames of 10 and 15 floors showed an increase of 20% and 35% respectively in the range of non-linear behavior of these changes.

رفتار لرزه اي , ديوار برشي فولادي , روش المان محدود , نرم افزار ABAQUS , محدوده رفتار غيرخطي

seismic behavior , steel shear wall , Finite Element Method , ABAQUS software , range of nonlinear behavior

Ahmad Reza Madihi

Dr. Mohsenali Shayanfar