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应用拟静力试验研究方法,对全轻混凝土框架结构的梁柱节点试件以梁外端低周往复加载方式进行了极限承载力试验,研究轴压比为0.1和轴压比为0.3时全轻混凝土梁柱边节点和中间节点的破坏机制,分析不同轴压比和相同轴压比下梁柱节点的破坏性能。试验结果表明,边节点的抗震性能优于中间节点,相同的节点其承载力随轴压比增大而减小。节点核心区发生剪切破坏,梁端在弯剪共同作用下发生弯剪破坏。
Using the method of quasi-static test, the ultimate bearing capacity of beam-to-column joint specimens of full-light concrete frame structure was tested by low-frequency reciprocating loading at the outer end of the beam. When the axial compression ratio was 0.1 and the axial compression ratio was 0.3, The failure mechanism of beam-column edge node and intermediate node, the failure performance of beam-column joint under different axial compression ratio and same axial compression ratio is analyzed. The experimental results show that the seismic performance of the edge nodes is better than that of the intermediate nodes, and the bearing capacity of the same nodes decreases with the axial compression ratio increasing. At the core of the node, shearing failure occurs, and the bending and shearing damage of beam ends occurs under the joint action of bending and shearing.