نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد دانشگاه جامع امام حسین(ع)
2 دانشیار و عضو هیئت علمی دانشگاه جامع امام حسین(ع)
3 دانشیار پژوهشگاه زلزله و عضو هیئت علمی دانشگاه تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Considering terrorist and hostile attacks against our homeland, investigating the structure performance against explosions and the phenomenon of advancing failure is of utmost importance. Therefore; structure hardening against explosions and the phenomenon of advancing destruction is one of the important issues in passive defense. This article deals with the attitude of steel structures with ordinary bending frame (SMRF) and the reinforced bending frame with back pulled cable (PTED) against advancing failure. In this regard, the alternate load path method (APM) has been used based on the DOD and GSA Directive. According to this method, the structure frame, after the elimination of the pillars of the first floor, should behave in such a manner that the first failure does not expand. Therefore; modeling is performed in the SAP2000 V15 software. To analyze the structures, non-linear static method is employed. The non-linear static analysis results of the software regarding the three-storey structure are compared with those of the experimental results of researchers showing a good compatibility. The performed analysis indicates that although the vertical envelope curve of the ordinary bending frame has more resistance against advancing destruction, the performance of the bending frame PTED performs better against big deformities caused by advancing destruction. The bending frame PTED, with the help of cables and energy dampers, prevents plastic deformities in pillars and shores and the structure collapse, as well. Moreover, the energy in the dampers is consumed and if necessary, will be replaced.
کلیدواژهها [English]
)