چكيده به لاتين
many researches have been done on steel plate shear walls performance, but very limited researches have been done on the performance of steel plate shear walls after the fire. Therefore, in this study, the performance of steel plate shear wall was evaluated after the fire. In research done by computer analysis, in order to provide a basis for future conclusions and comparisons, it is necessary to ensure the accuracy of the modeling and results. One of the most appropriate methods to achieve this goal is to compare and analyze the results of experimental research done with the results modeling and computer analysis. Therefore, in this thesis, we modeled one of the experimental models by the ABAQUS software and compared the results with experimental sample. In this thesis, three structures with three, six, nine stories with special moment frame and special low yield stress steel plate shear wall were designed in accordance with Iranian national standards and AISC-360 code and AISC-07-16 standard and using ETABS software. Then, a frame of each of the different structures was modeled in the ABAQUS software. The loading pattern was applied by triangular loading pattern and Nonlinear static analysis (DEA) was performed until the target displacement (pushover analysis). To investigate the earthquake after fire for 3,6,9 story structures ,16,24 and 24 models were considered respectively by two methods of cooling with water and air. To investigate the different fire scenarios, the mechanical properties of steel after fire are determined under the desired temperature. The nonlinear behavior of these structures has been investigated by pushover curve and the result of nonlinear properties of these structures are evaluated and compared with the initial models. In general, the seismic performance of dual system with special moment frame and special steel plate shear wall under the fire exposure is weakened. It means, Response modificatian factor and energy absorbtion at a special target displacement in pushover curve in earthquake after fire mode were reduced toward the initial mode. In this research, the response modification factor in different scenarios is more than the value in the standards (except one model) and also we can say the value of standard (R=8) for special moment frame and special low yield stress steel plate shear wall are relatively good and conservative.
