摘要
随着基于性能抗震设计理论的发展,损伤模型在建立性态目标量化准则方面受到重视。本文对6根不同轴压比的钢筋混凝土框架柱进行低周反复试验,计算了各构件分别采用基于刚度的破损指标和基于位移及耗能的破损指标,并与试验现象进行了对比。分析结果表明,基于位移及耗能的改进Park-Ang模型能较好的反映框架柱各破坏阶段的损伤程度,而基于刚度变化模型能较好的反映框架柱不同位移幅值下的损伤程度,但对后期破坏定义太笼统。
With the development of performance-based seismic design theory, the damage model of seismic behavior gained attention at the establishment of quantitative criteria for performance-based seismic design. In this paper, the static low-cycle tests of six reinforced concrete frame columns with different axial compression ratios were conducted. The damage indices of each component based on stiffness and based on displacement and energy for the columns were calculated, and were compared with the experimental phenomena. The results shows the extent of the damage of the columns in different phase can be expressed by the improved Park-Ang model based on displacement and energy. The damage model based on stiffness can reflect the extent of damage under different displacement amplitude, but the definition of the later damage is very ambiguous.
出处
《工程抗震与加固改造》
北大核心
2009年第6期1-4,23,共5页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金委重大研究计划项目(90715016)
安徽省自然科学基金项目(070415220)
