| 基于结构Push-over曲线的目标位移的确定 |
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| 作者单位： | 中国地震局地球物理研究所,北京,100081;西安理工大学水利水电学院,西安,710048;北京工业大学工程抗震与结构诊治北京市重点试验室,北京,100022 |
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| 摘 要： | 结合我国现行抗震规范中的弹性反应谱,给出了基于结构Push-over曲线的目标位移的确定方法,并据此对结构抗震性能进行了评估。经对比分析,列举了确定等效单自由度体系粘滞阻尼比的实用公式。此外,以规范反应谱为目标谱,合成人工地震波对结构进行弹塑性时程分析,检验简化计算结果。实例分析表明,所给出的目标位移的确定方法有较好的精度,便于工程技术人员掌握,是进行抗震性能设计的实用方法。
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| 关 键 词： | 目标位移 Push-over曲线 等效阻尼比 弹性反应谱 |
A method for determining target displacement based on structural Push-over curve |
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| Authors: | Yu Ruifang Zhang Junfa Zhou Xiyuan |
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| Affiliation: | Yu Ruifang~ 1,3,Zhang Junfa~2,Zhou Xiyuan~3 |
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| Abstract: | A method of calculating target displacement, which is based on structural Push-over curve and elastic response spectra given in Chinese aseismic code, is deduced and then is used to estimate structural performance. Some formulas for calculating viscous damping ratio of equivalent single-degree-freedom system are analyzed and compared. In addition, the elastic-plastic time history analysis is adopted to check the results obtained from simplified method under a man-made seismic wave input. The analysis results show that the simplified method has good precision and is convenience to be mastered and used by engineers, so that it is a practical approach for carrying out seismic performance based design. |
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| Keywords: | target displacement Push-over curve equivalent damping ratio elastic response spectra |
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