【摘要】 对9个超高韧性水泥基复合材料(简称UHTCC)新型框架梁柱节点低周反复荷载作用下的抗震性能进行试验研究,分析节点核心区轴压比、体积配箍率等因素对UHTCC节点抗裂性能的影响。结果表明:超高韧性水泥基复合材料取代普通混凝土可以有效控制裂缝宽度,增大轴压比可以提高UHTCC节点试件的抗裂承载能力。在试验研究的基础上,提出UHTCC节点抗裂承载力计算公式,并与试验结果进行比较,两者吻合较好。更多还原

【Abstract】 To investigate the influence of joint core volume reinforcement ratio and axial compression ratio on crack behavior of ultra high toughness cementitious composite( UHTCC) joints,nine specimens of UHTCC beam-column joints were tested under reversed low cyclic loading.The results showed that UHTCC could effectively control crack width and increase axial compression ratio,which could raise the crack resistance capacity of the joint.Based on the test results,a theoretical formula of crack resistance capacity was proposed.The calculated results were compared with those of the test,and a good agreement was obtained.更多还原