- 目录
- 新型墙体材料与施工
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新型轻质条板填充墙对RC框架抗震性能的数值模拟
作者：孙冰，毛颖，王劲松，董腾，杨鑫
（南华大学 土木工程学院，湖南 衡阳 421001）
摘要：为研究轻质条板对填充墙RC框架抗震行为的影响，基于ABAQUS构建有限元计算模型并结合前人的实测数据对所建模型进行对比验证。在已验证模型的基础上，通过构建自主研制的新型轻质材料的抗压本构模型，改变条板布置方式、条板厚度和柱轴压比等关键参数，分析这些参数对填充墙RC框架的滞回曲线、刚度退化曲线及耗能能力的影响。结果表明：使用轻质条板填充墙能显著改善RC框架结构的抗震性能；条板竖向布置对承载力、初始刚度及耗能能力的提升有显著效果；条板厚度对框架抗震性能影响不明显；柱轴压比在合理区间内能有效提高结构承载力、初始刚度和耗能能力，但柱轴压比过大时结构抗震性能会被削弱。
关键词：新型轻质材料；条板填充墙RC框架；抗震性能；数值模拟
中图分类号：TU352.11；TU375.4 文献标识码：A 文章编号：1001-702X（2022）01-0108-05
Numerical simulation of seismic behavior of reinforced concrete frame with slat-filled walls based on new lightweight materials
SUN Bing，MAO Ying，WANG Jingsong，DONG Teng，YANG Xin
（School of Civil Engineering，University of South China，Hengyang 421001，China）
Abstract：In order to study the influence of lightweight slabs on the seismic behavior of RC frame with filled wall，a finite element model was constructed based on ABAQUS and compared and verified by referring to previous test results. Based on the verified models，a new compressive constitutive model for lightweight materials was developed，and the key parameters such as the layout of the strip，the thickness of the strip and the axial compression ratio of the column were changed. The effects of these parameters on hysteresis curve，stiffness degradation curve and energy dissipation capacity of RC frame with filled walls are analyzed. The results presented that the seismic performance of the frame structure can be significantly improved by lightweight wallboard. The vertical layout of the slats has a significant effect on the improvement of the peak bearing capacity，initial stiffness and energy dissipation capacity of frame structures with lightweight wallboard. The thickness of the slats has no obvious effect on the seismic performance of the frames. In a reasonable range，the peak bearing capacity，initial stiffness and energy dissipation capacity of the structure can be improved effectively，but the seismic performance of the structure will be weakened when the column axial compression ratio is too large.
Key words：new lightweight materials，slat-filled wall RC frame，seismic performance，numerical simulation