【摘要】 为了解地震作用下钢骨超高强混凝土柱-混凝土梁节点的动力特性,制作12榀钢骨超高强混凝土柱-混凝土梁节点进行低周反复加载试验,观察记录试件的受力过程。基于对试验结果的分析,建立适用于钢骨超高强混凝土柱-混凝土梁节点的恢复力模型,该模型包括基于计算的骨架曲线模型及基于试验现象的滞回规则。建议的骨架曲线模型与试验骨架曲线吻合程度较高,直接描述了试件的受力过程。由建议的滞回规则计算得到的计算滞回曲线与试验滞回曲线大致相同,较好地反映了低周反复荷载作用下钢骨超高强混凝土柱-混凝土梁节点的滞回性能。所建议的恢复力模型可供钢骨超高强混凝土构件及其结构非线性地震反应分析应用。更多还原

【Abstract】 To understand the dynamic characteristics of steel reinforced ultra high strength concrete column and concrete beam joints, twelve specimens are fabricated and tested under low cyclic load, loading process was observed and recorded. Restoring force model of steel reinforced ultra high strength concrete column and concrete beam joints is established according to the test, which includes models of skeleton curve and hysteretic rule. The models of skeleton curve agree well with the experimental ones, which directly describe loading process of specimens. The hysteretic curves calculated from presented hysteretic rule have a good agreement with experimental ones, and their trends are roughly identical with experimental ones. The model can be used for the nonlinear seismic response analysis of SRC-RC structures.更多还原