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为研究柱端不同箍筋配置形式对钢筋混凝土柱抗震性能的影响,采用柱剪力、柱端主筋变形及柱端箍筋变形作为评价指标,对3根截面尺寸与主筋配置相同、端部箍筋配置形式不同的钢筋混凝土柱进行反复荷载作用下的地震模拟试验。结果表明,对柱端端部箍筋加密,可以提高钢筋混凝土柱的抗剪性能;而对柱端腹部箍筋加密对钢筋混凝土柱的抗剪性能没有影响。钢筋混凝土柱端端部或柱端腹部箍筋加密后,对柱端主筋变形及柱端箍筋变形的影响主要与转角相关,转角较小时影响很小,反之影响较大。该试验可为对抗震性能有要求的钢筋混凝土柱箍筋配置形式的合理确定提供科学参考。
In order to study the influence of column stirrup configuration on seismic performance of reinforced concrete columns, column shear force, deformation of column-end main reinforcement and column-end stirrups deformation were used as evaluation indexes. The three sections were the same in size and main reinforcement configuration. Seismic Simulation Tests of Reinforced Concrete Columns with Different Configurations of Reinforced Concrete under Repeated Load. The results show that the shear strength of the reinforced concrete columns can be improved by encrypting the stirrups at the end of the column. However, the shear strength of reinforced concrete columns has no effect on the shear strength of the column ends. After the end of the reinforced concrete column or the column end abdominal stirrups are encrypted, the influence of the deformation of the main reinforcement at the end of the column and the deformation of the column-end stirrup is mainly related to the rotation angle. When the rotation angle is smaller, the impact is small, but the influence is larger. The test can provide a scientific reference for the reasonable determination of the configuration forms of the stirrup of reinforced concrete columns which are required for the seismic performance.