蒋中华1,孙林柱2,徐 颖1,李 桅2
双层箍筋约束高强混凝土柱轴心受压力学特性研究
蒋中华1,孙林柱2,徐 颖1,李 桅2
摘 要:为了解双层箍筋对混凝土变形性能的影响,对6根双层箍筋约束混凝土圆形柱与2根普通箍筋圆柱进行了轴心受压试验,研究了其破坏过程和破坏形态。并基于试件的荷载-应变曲线,分析了箍筋形式、内外层箍筋间距以及配箍特征值对试件变形性能的影响。结果表明:双层箍筋比普通箍筋能更有效地提高高强混凝土的延性,从而提高了混凝土柱的变形性能。
Abstract: In order to effectively improve the strength and deformation properties of concrete circular columns, a new type of of building structure (double-stirrup RC column) is proposed. On the basis of concentric loading tests of six circular columns confined by double high strength spiral stirrups, the damage form of the concrete circular columns and the stress-strain curve of the specimens are analyzed. The results show that double high strength spiral stirrups is more effective in the lateral deformation of the high strength concrete than common reinforcement, and can effectively improve the deformation of high strength concrete components performance.
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