In this study, the performance of viscoelastic dampers designed for seismic loading has been investigated for controlling reinforced concrete special moment frame (RC-SMF) structures against blast loading. In addition, the progressive collapse due to an explosion has been examined in these structures. Three reinforced concrete structures with three, six, and fifteen floors have used for this study. All three structures have special moment frame as the lateral resisting system and were equipped with seismic viscoelastic dampers. The attained results confirmed impact of the seismic viscoelastic dampers d in reducing the response of structures to blast loading, especially in low rise structures and lower floors of high rise structures. In the investigation of progressive collapse, in order to specify the most critical column under the blast loading applied on structures, a new method was introduced in addition to the column's elimination scenarios introduced in the USGSA code. This study introduced a new method for specifying the most critical column under the blast loading. The attained results from this method compared with columns elimination scenarios that discussed in the USGSA code. In this developed method, the critical columns which with the maximum generated strain in the longitudinal rebar of the column eliminated and the structures reanalyzed for progressive collapse. After the elimination of the desired column, a progressive collapse analysis was performed. According to the results of the sudden removal of the column and the nonlinear dynamic analysis, the collapse would occur with and without dampers in the case of the 3-story building, in the case of the 6-story building there is an improvement in the vertical displacement and in the case of 15- story the difference is not significant.

在这项研究中，已经研究了设计用于地震荷载的粘弹性阻尼器的性能，以控制钢筋混凝土特殊弯矩框架（RC-SMF）结构免受爆炸荷载的影响。另外，在这些结构中已经检查了由于爆炸引起的渐进塌陷。这项研究使用了三层钢筋混凝土结构，分别具有三层，六层和十五层。这三个结构都具有特殊的弯矩框架作为侧向抵抗系统，并配备了地震粘弹性阻尼器。所获得的结果证实了地震粘弹性阻尼器d在降低结构对爆炸载荷的响应方面的影响，特别是在高层建筑的低层结构和低层结构中。在进行性倒塌的调查中，为了指定爆炸荷载作用在结构上的最关键柱，除了USGSA代码中引入的柱消除方案外，还引入了一种新方法。这项研究引入了一种新方法，用于指定爆炸载荷下最关键的圆柱。与USGSA代码中讨论的列消除方案相比，此方法获得的结果。在这种改进的方法中，消除了在柱的纵向钢筋中产生最大应变的临界柱，并对结构进行了重新分析以进行逐渐塌陷。消除所需的色谱柱后，进行逐步折叠分析。根据色谱柱突然拆除的结果和非线性动力学分析，