型钢混凝土异形柱抗震性态及其量化指标研究
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摘要
为研究型钢混凝土异形柱的抗震性态,采用"建研式"加载装置对17个试件进行低周反复加载试验,在参照钢筋混凝土结构和型钢混凝土结构对性态水平和破坏状态划分的基础上,对此建议了5个评价等级:即正常使用、暂时使用、修复后可使用、生命安全和防止倒塌;以层间位移角为性态控制指标,对其进行频数统计分析,并建立型钢混凝土异形柱在不同性态水平下的量化指标;通过控制地震震害指数,提出在不同性态水平下型钢混凝土异形柱不同破坏状态时的损伤程度,并与性态指标构成一一对应关系。研究成果可为型钢混凝土异形柱结构基于性能的抗震设计和工程应用提供参考。
In order to research the seismic performance levels of SRC special shaped columns, 17 specimens were tested on the PCE loading device under low reversed cyclic loading. On the basis of RC structures and SRC structures for their performance levels and failure states, five estimation scales were put forward, including normal use, temporary use, use after repaired, life safety and prevent collapse. The interlayer displacement angle was set as the performance control index, and the quantitative indexes of SRC special shaped columns under different performance levels were built via the frequency statistics analysis. By controlling the seismic damage index, the damage degrees of SRC special shaped columns under different performance levels were proposed at different failure state, and there is a one-toone relationship between damage value and performance index. It can be provided a reference for engineering applications in the research results of SRC special shaped column structures for their seismic design based on performance.
引文
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