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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。
In order to investigate the seismic performance of reinforced concrete columns reinforced with fiber reinforced composites and reinforced concrete columns, Open SEES software was used to carry out finite element analysis. The simulation results were compared with the experimental results. On this basis, the failure modes, secondary stiffness ratio, residual deformation and cumulative energy dissipation of hybrid reinforced columns were discussed. It was found that the distribution ratio of composite reinforcement bars to common reinforcement had a great influence on the failure mode and displacement ductility , “Complex tendons ” less configuration, hybrid reinforcement columns will not reach 2% of the displacement ductility needs. Under the premise of ensuring the ratio of “compound tendons”, the mixed reinforcement columns have stable yield stiffness and similar energy dissipation capacity compared with common reinforced concrete columns, and the residual deformation of the column components is greatly reduced, indicating that Building structure has a good application prospects.