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为了分析H型钢部分包裹混凝土组合柱的抗震性能,试验设计制作了6个焊接H型钢部分包裹混凝土柱,对其进行拟静力试验。在低周反复水平荷载和恒定的垂直荷载下,通过对关键部位应变、位移数据的采集及处理,分析了其破坏模式、滞回性能、耗能性能、位移延性等一系列抗震性能指标。试验结果表明:PEC柱滞回性能良好;刚度退化稳定;具有良好的延性和耗能性能。
In order to analyze the seismic behavior of H-section partially encased concrete composite columns, six welded H-section partially encased concrete columns were designed and fabricated for quasi-static tests. A series of seismic performance indexes such as failure mode, hysteretic behavior, energy dissipation performance and displacement ductility were analyzed through the acquisition and treatment of the strain and displacement data of key parts under the low-level repeated horizontal load and constant vertical load. The experimental results show that PEC has good hysteretic behavior, stable stiffness degradation, good ductility and energy dissipation.