为了快速准确地评估地震作用下不规则装配框剪结构的真实状态，为震后结构的损伤程度预测和抗震加固提供技术支持，基于结构材料属性、层间变形、扭转变形以及裂缝等参数，提出了震损不规则装配框剪结构的综合损伤指标(the comprehensive damage index,DI)，建立了DI限值与地震破坏水准之间的关系，最后通过地震模拟振动台试验和数值分析验证了评估理论的可行性和有效性，并与脉动法、规程评估结果进行了比较。结果表明，DI考虑了结构的局部损伤和整体损伤状态，震损不规则装配框剪结构为中等破坏，该评估结果相对层间最大扭转角（严重破坏）、裂缝（轻微破坏）等参数更能真实反映震损结构损伤情况，且与脉动法的结构整体评估结果、规范的层间最大位移角评估结果一致，这一切表明所提评估理论用于精确评估震损不规则装配框剪结构是可行、有效的。
Abstract
In order to quickly and accurately evaluate real state of irregular assembled frame shear wall structure under earthquake, and provide technical support for damage degree prediction and aseismic reinforcement of the structure after earthquake, based on structural material properties, interlayer deformation, torsional deformation and cracks and other parameters, the comprehensive damage index (DI) of the earthquake damaged irregular assembled frame shear wall structure was proposed to establish the relation between DI limit value and seismic damage level. Finally, the feasibility and effectiveness of the evaluation theory were verified with shaking table tests and numerical analysis, and the results were compared with those of the pulsation method and regulation evaluation. The results showed that using DI considers the structure’s local damage and overall damage states; seismic damage of irregular assembled frame shear wall structure is medium damage; compared with maximum interlayer torsion angle (serious damage) and crack (slight damage), the evaluation results can more truly reflect damage situation of seismically damaged structures, and they are consistent with overall evaluation results of the pulsation method and the maximum interlayer torsion angle method in code, so the proposed evaluation theory is feasible and effective for accurately evaluating seismic damage of irregular assembled frame shear wall structures.
关键词
装配式结构 /
不规则框剪结构 /
振动台试验 /
综合损伤指标DI
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Key words
assembled structure /
irregular frame shear wall structure /
shaking table test /
comprehensive damage index (DI)
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