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通过一榀设置K型支撑的高强混凝土框架(UBCBF)和一榀不设支撑的高强混凝土框架(HSCMF)在低周反复荷载下的结构性能的对比试验,着重研究了高强混凝土支撑式框架的承载与变形能力、延性等抗震性能指标以及其变形刚度和破坏机制。试验结果表明,高强混凝土支撑式框架具有初始刚度大、极限承载力高,延性和耗能性能良好的特点。本文结合试验结果及其分析,给出了这种结构的抗侧力恢复力特性和抗震设计建议。
Through a comparative test of the structural performance of a high-strength concrete frame (UBCBF) with K-bracing and a high-strength concrete frame (HSCMF) with no support under low cyclic loading, the study of the load-bearing frame of high-strength concrete was conducted. Seismic performance indicators such as deformability and ductility, as well as its deformation stiffness and failure mechanism. The test results show that the high-strength concrete supporting frame has the characteristics of large initial stiffness, high ultimate bearing capacity, good ductility and energy dissipation performance. In this paper, combining with the test results and analysis, the anti-side force recovery characteristics and seismic design recommendations of this structure are given.