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通过 3个扁梁柱节点的试验 ,研究了无粘结预应力筋和扁梁宽度对节点破坏形态的影响。在分析其它文献提出的极限抗剪强度计算公式的基础上 ,提出了更为合理的无粘结部分预应力扁梁柱节点极限抗剪强度计算公式。计算值与试验值进行了比较。提出的公式可供工程设计参考使用
Through the test of three flat-beam joints, the influence of the width of unbonded prestressed tendons and flat beams on the failure modes of the joints is studied. Based on the analysis of the formulas of the ultimate shear strength proposed by other literatures, a more reasonable formula for calculating the ultimate shear strength of prestressed flat beam-column joints is proposed. The calculated value is compared with the test value. The proposed formula can be used for engineering design reference