新型钢柱脚抗震性能分析
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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。
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.
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.
引文
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[2]Nakashima M,Inoue K,Tada M.Classification of damage to steel buildings observed in the1995 Hyogoken-Nanbu earthquake[J].EngineeringStructures,1998,20(6):271-281.
[3]Takamatsu T,Hiroyuki T.Non-slip-type restoring force characteristics of an exposed-type column base[J].Journal of Constructional Steel Re-search,2005,61:942-961.
[4]石永久,苏迪,王元清.考虑组合效应的钢框架梁柱节点恢复力模型研究[J].世界地震工程,2008,24(2):15-20.SHI Yongjiu,SU Di,WANG Yuanqing.Study on restoring force models of steel beam-column connections with composite action[J].World earth-quake engineering,2008,24(2):15-20.
[5]杨其伟,范源,王献云,等.型钢混凝土短肢剪力墙抗震性能的试验研究[J].世界地震工程,2009,25(2):105-110.YANG Qiwei,FAN Yun,WANG Xianyuan,et al.Experimental studies on seismic behavior of shape steel concrete short-leg shear wall[J].WorldEarthquake Engineering,2009,25(2):105-110.
[6]陈绍蕃.钢结构设计原理[M].北京:科学出版社,2005.CHEN Shaofan.Principle of steel structure design[M].Beijing:Science Press,2005.
[7]陈宗平,薛建阳,苏益声,等.反复荷载作用下型钢混凝土L形柱的受力性能[J].地震工程与工程振动,2009,29(6):121-129.CHEN Zongping,XUE Jianyang,SU Yisheng,et al.Mechanical behavior of steel reinforced concrete L-shaped column under low cyclic reversedloading[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(6):121-129.
[8]徐亚丰,赵敬义,张世宪,等.钢骨-钢管混凝土柱抗震性能试验研究[J].建筑钢结构进展,2009,11(3):4-11.XU Yafeng,ZHAO Jingyi,ZHANG Shixian,et al.Experimental research on seismic behavior of circular steel tube composite column filled withsteel reinforced concrete[J].Progress in Steel Building Structure,2009,11(3):4-11.
[9]蔡健,周靖,方小丹.钢筋混凝土框架抗震位移延性系数研究[J].工程抗震与加固改造,2005,27(3):2-6.CAI Jian,ZHOU Jing,FANG Xiaodan.Study on seismic displacement ductility factor of reinforced concrete frame structure[J].Earthquake Re-sistant Engineering and Retrofitting,2005,27(3):2-6.
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