论文部分内容阅读
为研究型钢超高强混凝土(SRHC)框架柱的抗震性能和抗震构造措施,开展24个SRHC框架柱的低周反复加载试验。首先,根据试验结果分析了不同试验参数(包括剪跨比、轴压力水平以及型钢和箍筋的配置)对SRHC框架柱的破坏形态、滞回性能和变形能力的影响;其次,在此基础上结合试验数据分析提出了SRHC框架柱的抗震构造措施,包括不同抗震等级时的轴压比限值和箍筋加密区的最小配箍要求,箍筋加密区长度及最小含钢率。
In order to study the seismic behavior and seismic design of SRHC columns, 24 low-cycle cyclic loading tests of SRHC frame columns were carried out. Firstly, the influence of different test parameters (including shear span ratio, axial pressure and the configuration of steel and stirrup) on the failure morphology, hysteretic behavior and deformation capacity of SRHC frame columns are analyzed based on the experimental results. Secondly, based on this, Based on the experimental data, the seismic structural measures of SRHC frame columns are presented, including the limit values of axial compression ratio for different seismic levels, the minimum hoop requirements of the stirrup reinforcement zone, the length of the stirrup reinforcement zone and the minimum steel content.