钢管混凝土柱基底隔震系统拟静力试验研究
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摘要
隔震技术作为提高建筑物抗震能力的一种途径,已经得到工程界的普遍认可。钢管混凝土柱基底隔震系统具有取材方便、制作简单、造价低廉等特点。通过对4组钢管混凝土柱隔震系统进行拟静力试验,研究隔震系统在不同竖向压力作用下的恢复力特性,结果表明,钢管混凝土柱基底隔震系统抗震剪切承载力主要与钢管混凝土柱的直径和竖向荷载相关。提出钢管混凝土柱隔震系统抗震剪切承载力的计算公式,可为钢管混凝土柱隔震系统的抗震分析提供依据。
Base-Isolation as an effective way to improve the seismic resistance of buildings, bas been widely used in the engineering practice. This paper describes a steel concrete column base-isolation system, it has the advantage of simple construction, low cost and easy to be implemented. Through pseudo-static test on four sets of steel concrete column isolation system, the seismic isolation system restoring force characteristics under different vertical load was tested. The results show that the relationship between the bearing capacity and displacement of the concrete column isolation system and its shear resistance depend on the diameter of concrete column of the isolation system and the vertical load sustained. Correspondingly, formulas for calculating seismic shear force resistance are represented, which may provide the basis for the seismic analysis for concrete filled steel tubular column base-isolation systems.
Base-Isolation as an effective way to improve the seismic resistance of buildings, bas been widely used in the engineering practice. This paper describes a steel concrete column base-isolation system, it has the advantage of simple construction, low cost and easy to be implemented. Through pseudo-static test on four sets of steel concrete column isolation system, the seismic isolation system restoring force characteristics under different vertical load was tested. The results show that the relationship between the bearing capacity and displacement of the concrete column isolation system and its shear resistance depend on the diameter of concrete column of the isolation system and the vertical load sustained. Correspondingly, formulas for calculating seismic shear force resistance are represented, which may provide the basis for the seismic analysis for concrete filled steel tubular column base-isolation systems.
引文
[1]丁发兴,余志武.钢管混凝土短柱力学性能研究—实用计算方法[J].工程力学,2005,22(3):134-138(Ding Faxing,Yu Zhiwu.A method for calculation of the mechanical properties of concrete-filled tubular steel stub columns[J].Engineering Mechanics,2005,22(3):134-138(in Chinese))
[2]洪峰,王前信.滞变-摩擦基底隔震支座的试验和模型[J].地震工程与工程振动,1997,17(4):1-8(Hong Feng,Wang Qianxin.Tests and model for base isolation bearings of hysteresis-friction[J].Earthquake Engineering and Engineering Vibration,1997,17(4):1-8(in Chinese))
[3]孙峰,张永山,张建国,等.变刚度钢管混凝土短柱隔震装置的性能研究[J].地震工程与工程振动,1999,19(3):127-130(Sun Feng,Zhang Yongshan,Zhang Jianguo,et al.Research on changeable stiffness base isolator with concrete filled steel tubular short columns[J].Earthquake Engineering and Engineering Vibration,1999,19(3):127-130(in Chinese))
[4]王焕定,赵桂峰.变刚度钢管混凝土短柱隔震装置的试验研究[J].工程力学,2000,17(6):41-46(Wang Huanding,Zhao Guifeng.Experimental study on variable stiffness base isolator made of concrete-filled steel tubular short column[J].Engineering Mechanics,2000,17(6):41-46(in Chinese))
[2]洪峰,王前信.滞变-摩擦基底隔震支座的试验和模型[J].地震工程与工程振动,1997,17(4):1-8(Hong Feng,Wang Qianxin.Tests and model for base isolation bearings of hysteresis-friction[J].Earthquake Engineering and Engineering Vibration,1997,17(4):1-8(in Chinese))
[3]孙峰,张永山,张建国,等.变刚度钢管混凝土短柱隔震装置的性能研究[J].地震工程与工程振动,1999,19(3):127-130(Sun Feng,Zhang Yongshan,Zhang Jianguo,et al.Research on changeable stiffness base isolator with concrete filled steel tubular short columns[J].Earthquake Engineering and Engineering Vibration,1999,19(3):127-130(in Chinese))
[4]王焕定,赵桂峰.变刚度钢管混凝土短柱隔震装置的试验研究[J].工程力学,2000,17(6):41-46(Wang Huanding,Zhao Guifeng.Experimental study on variable stiffness base isolator made of concrete-filled steel tubular short column[J].Engineering Mechanics,2000,17(6):41-46(in Chinese))
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