【摘要】 为研究在普通露出型钢柱脚上安装楔块装置的新型钢柱脚的抗震性能,采用通用有限元软件ANSYS建立了该柱脚两种常用形式下的三维实体模型,在低周反复加载作用下对其进行了抗震性能分析。根据有限元分析所得该柱脚的M-θ滞回曲线,及M-θ骨架曲线,对新型柱脚耗能能力和延性性质做了相关研究。同时,对比分析了不同轴压和不同形式柱脚的力学性能。结果表明:新型钢柱脚的恢复力特性为非滑移型,其M-θ滞回曲线饱满,并有较好耗能和延性性能,显示出良好的抗震性能。研究结果对新型柱脚的设计和应用提供了相关参考。更多还原

【Abstract】 To research the seismic behaviors of a new kind of steel column based with wedge devices,the finite element software ANSYS is used to build three dimensional models for two commonly used types of the column bases and the analysis of seismic behavior of the column base under the low cyclic loading is conducted.The M-θ hysteretic curves and M-θ skeleton curves of the column base are obtained from the finite element analysis.The energy dissipation capacity and ductility are also researched from the curves.Comparisons between different types of the column base and different axial compressions are conducted.The results show that the restoring characteristics of the new kind columns are non-slip-type.The M-θ hysteretic curves of bases are plumpy and have good energy dissipation capacity and ductility.These indicate good seismic abilities of the column base.The results provide references for the design and application of the new kind column base.更多还原