摘要
为考察纤维增强复合材料筋与钢筋混合配筋混凝土柱的抗震性能,采用Open SEES软件进行有限元分析,并与试验结果比较验证了模拟的准确性。在此基础上探讨了混合配筋柱破坏模式、二次刚度比、残余变形和累积耗能等特性,发现复材筋与普通钢筋之间的配置比例对其破坏模式和位移延性有较大影响,"复材筋"配置较少时,混合配筋柱将达不到2%的位移延性需求。在保证"复材筋"配置比例的前提下,混合配筋柱比普通钢筋混凝土柱具有稳定上升的屈服后刚度和相近的耗能能力,柱构件的残余变形大幅减小,表明其在建筑结构中具有较好的应用前景。
To investigate the seismic performance of columns reinforced by hybrid steel and composite bars, the finite element simulation based on OpenSEES software was carried out and compared with the experimental data. The failure modes, post-yield stiffness ratio, residual deformation and accumulated dissipated energy of hybrid reinforced columns were studied and discussed. The analysis results showed that the proportion of composite reinforcements had great influence on the failure modes and displacement ductility of hybrid reinforced columns. The drift ratio was less than 2% if there were less composite reinforcements in such columns. However, the columns with sufficient composite reinforcements displayed a stable ascending post-yield stiffness and similar energy-dissipating capacity is contrast with traditional reinforced concrete （RC） columns. Moreover, the residual deformation of the columns reinforced by hybrid steel and composite bars decreased largely. This research shows that the columns with hybrid reinforcements have a good application prospect in building structures.
出处
《工业建筑》
CSCD
北大核心
2016年第5期1-6,101,共7页
Industrial Construction
基金
国家自然科学基金面上项目(51278150
51478143)
国家重点基础研究发展计划项目(2012CB026200)
关键词
复材筋
混合配筋
抗震性能
屈服后刚度
残余变形
composite bars
hybrid reinforcement
seismic performance
post-yield stiffness
residualdeformation
