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首页> 外文期刊>Journal of Civil Engineering and Science >The Effect of Infill Wall Collapse on the Deformation Estimations of Reinforced Concrete Frames
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The Effect of Infill Wall Collapse on the Deformation Estimations of Reinforced Concrete Frames

机译：填充墙倒塌对钢筋混凝土框架变形估计的影响

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Infill walls are generally used as partition walls in structural systems. Their contributions to stiffness and strength during earthquakes are often neglected in the design of new buildings. 1999 Kocaeli, 2003 Bingol and 2011 Van earthquakes in Turkey revealed that the presence of infill walls may significantly affect the vulnerability of structures depending on failure of walls in first stories and formation of soft story mechanism. Since the building stock in Turkey is mostly composed of reinforced concrete frame buildings with masonry infill walls, simulation of building collapse under seismic loads becomes an important issue. In this paper, the failure mechanisms of the infill walls were numerically simulated by integrating an element removal algorithm to the traditional diagonal strut models. The possible unfavourable effects of infill walls on the reinforced concrete structures were investigated under the earthquake loads. For this purpose, a 4-story 3-bay deficient reinforced concrete frame with infill walls was examined and the results were compared with those of the bare frame. 7.4 magnitudes 1999 Duzce earthquake was used as the ground motion record in the nonlinear time history analyses. The analysis results indicated that including infill wall collapse in analyses resulted in large deformation demands, sudden stiffness degradations and formation of a soft story. These detrimental damage events were not observed when the presence of infill walls was neglected.
机译：填充墙通常在结构系统中用作隔墙。它们在地震期间对刚度和强度的贡献在新建筑的设计中常常被忽略。 1999年的Kocaeli，2003年的Bingol和2011年的土耳其地震表明，填充墙的存在可能会严重影响结构的脆弱性，具体取决于第一层中墙的破坏和软层机制的形成。由于土耳其的建筑群主要由带有砌体填充墙的钢筋混凝土框架建筑组成，因此在地震荷载下模拟建筑物倒塌成为一个重要的问题。在本文中，通过将元素去除算法与传统的对角支撑模型集成，对填充墙的破坏机理进行了数值模拟。研究了在地震作用下填充墙对钢筋混凝土结构的可能不利影响。为此，检查了带有填充墙的4层3托架不足钢筋混凝土框架，并将结果与​​裸框架进行了比较。在非线性时程分析中，以7.4级1999年杜兹地震为地震动记录。分析结果表明，在分析中包括填充墙塌陷会导致较大的变形需求，突然的刚度退化和软层的形成。当忽略填充壁的存在时，未观察到这些有害的破坏事件。

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