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首页> 外文期刊>Bulletin of earthquake engineering >Investigating the effects of structural pounding on the seismic performance of adjacent RC and steel MRFs
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Investigating the effects of structural pounding on the seismic performance of adjacent RC and steel MRFs

机译：调查结构冲击对邻近RC和钢铁FF的地震性能的影响

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An insufficient separation distance between adjacent buildings is the main reason for structural pounding during severe earthquakes. The lateral load resistance system, fundamental natural period, mass, and stiffness are important factors having the influence on collisions between two adjacent structures. In this study, 3-, 5- and 9-story adjacent reinforced concrete and steel moment resisting frames (MRFs) were considered to investigate the collision effects and to determine modification factors for new and already existing buildings. For this purpose, incremental dynamic analysis was used to assess the seismic limit state capacity of the structures using a developed algorithm in OpenSees software including two near-field record subsets suggested by FEMA-P695. The results of this paper can help engineers to approximately estimate the performance levels of MRFs due to pounding phenomenon. The results confirm that collisions can lead to the changes in performance levels, which are difficult to be considered during the design process. In addition, the results of the analyses illustrate that providing a fluid viscous damper between adjacent reinforced concrete and steel structures can be effective to eliminate the sudden changes in the lateral force during collision. This approach can be successfully used for retrofitting adjacent structures with insufficient in-between separation distances.
机译：相邻建筑物之间的间隔距离不足是强震期间结构碰撞的主要原因。横向荷载抗力系统、基本自振周期、质量和刚度是影响相邻结构碰撞的重要因素。在本研究中，考虑了3层、5层和9层相邻钢筋混凝土和钢抗弯框架（MRF），以研究碰撞效应，并确定新建筑和现有建筑的修改系数。为此，使用OpenSees软件中开发的算法，包括FEMA-P695建议的两个近场记录子集，使用增量动力分析来评估结构的地震极限状态承载力。本文的研究结果有助于工程技术人员对冲击现象下磁流变液的性能水平进行近似估计。结果证实，碰撞会导致性能水平的变化，这在设计过程中很难考虑。此外，分析结果表明，在相邻钢筋混凝土和钢结构之间设置液体粘滞阻尼器可以有效地消除碰撞过程中侧向力的突然变化。这种方法可以成功地用于间隔距离不足的相邻结构的改造。

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