Computation of the repairability index of short buildings with rocking connections

Mohammad Bavandi, A. S. Moghadam, M. Mansoori, A. Aziminejad
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引用次数: 2

Abstract

Recently developed steel self-centring moment-resisting frames have been analytically and experimentally validated as having the potential to eliminate structural damage under a design basis earthquake and restore their original vertical position following a major earthquake. In this study, the repairability index of post-tensioned self-centring frame for near-field earthquake has been developed. According to the six models of the studied building, a building that can be repaired, the maximum rotation in its connection after the earthquake does not exceed the rotation of the immediate occupancy performance. Based on this, the output data of incremental dynamic analysis analyses were drawn according to the connection of relative rotation and spectral acceleration. According to the predicted performance levels for each acceleration level, the value of the connection opening is divided by the opening of the design-basis earthquake level. The resulting curve shows the repairability index according to spectral acceleration, which if less than one, the repairability target is achieved. To evaluate the damage, the angle failure probability of post-tensioned self-centring frame for near-field earthquake has been developed. This index equation is determined according to the fragility curve and the intensity of damage in each building.
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带有摇摆连接的矮构筑物可修性指标的计算
最近开发的钢自定心抗矩框架已被分析和实验验证,具有在设计基础地震下消除结构破坏和在大地震后恢复其原始垂直位置的潜力。本文提出了后张自定心框架在近场地震中的可修性指标。根据所研究的建筑的六个模型,一个可以修复的建筑,在地震后其连接的最大旋转不超过直接使用性能的旋转。在此基础上,根据相对旋转与光谱加速度的关系,绘制了增量动态分析分析的输出数据。根据每个加速度级别的预测性能级别,将连接开口值除以设计基础地震级别的开口值。所得曲线表示根据谱加速度的可修性指标,当谱加速度小于1时,即达到可修性目标。为了评估后张自定心框架在近场地震作用下的破坏程度,建立了后张自定心框架的角度破坏概率。该指标方程是根据各建筑物的易损性曲线和破坏强度确定的。
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来源期刊
CiteScore
1.70
自引率
0.00%
发文量
28
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