基于几何非线性的Pall型摩擦阻尼器滞回特性分析与试验验证
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摘要
本文从Ｐａｌｌ摩擦阻尼器四连杆机构的几何非线性变形特征出发，分析一种改进的Ｐａｌｌ摩擦阻尼器——Ｔ形芯板摩擦阻尼器的滞回特性以及支撑的受力特点。本文与不考虑几何非线性的简化计算方法得到完全不同的结论：支撑的拉力在阻尼器起滑后并不保持为一常数，而是呈显著增加趋势，支撑最大拉力可达起滑时的２～３倍。试验结果也充分验证了这一结论。这一结论意味着按传统简化计算方法设计的Ｐａｌｌ阻尼结构可能存在较大安全隐患。
The hysteretic behavior of an improved Pall frictional damper (PFD) T-shaped cone plate frictional damper (TFD) is analyzed based on the geometrical nonlinearity of four-link mecha- nism of the damper. and corresponding verification test is carried out. The analysis and test results show that the tension force of the brace does not keep constant but increases remarkably after the slipping of TFED, and the maximum tension force can be as high as twice or even three times of tension force at initial slipping in some cases. The results herein indicate that the simplified method (see [4,8,9]) without considering geometrical nonlinearity of Pall damper may lead to unsafe structural design.
The hysteretic behavior of an improved Pall frictional damper (PFD) T-shaped cone plate frictional damper (TFD) is analyzed based on the geometrical nonlinearity of four-link mecha- nism of the damper. and corresponding verification test is carried out. The analysis and test results show that the tension force of the brace does not keep constant but increases remarkably after the slipping of TFED, and the maximum tension force can be as high as twice or even three times of tension force at initial slipping in some cases. The results herein indicate that the simplified method (see [4,8,9]) without considering geometrical nonlinearity of Pall damper may lead to unsafe structural design.
引文
[1] SEAOC Vision 2000 Committee, Performance-based seismic engineering[R]. Structural Engineers Association of California,Sacramento, California, U.S.A., 1995.
[2] Ou Jinping, et al., Recent advances in research on and application of passive energy dissipation spstems[J]. 地震工程与工程振动,1996,16(3):72-98.
[3] Betero, V.V., Performance-based seismic engineering: conventional vs. innovative approaches[A]. Paper 2074, 12WCEE[C], 2000
[4] Pall, A.S. and Marsh, C., Response of friction damped braced frames[J]. Journal of the Structural Division, ASCE, 1982, Vol.108, No.ST6: 1313-1323.
[5] Pall, A.S., Pall, R., Friction-damper used for seismic control of new and existing buildings in Canada[A]. ATC 17-1, Semi-nar on Seismic Isolation, Passive Energy Dissipation[C], 1993, Vol.2: 675-686,
[6] Hale, T.H., and Pall, R., Seismic upgrade of the Freeport water reservoir, Sacramento, Calilbrnia[A]. Paper 0269, 12WCEE[C],2000.
[7] Chandra, R., Friction-dampers fOr seismic control of La Gardenia towers south city, Gurgaon, India[A]. Paper 2008,12WCEE[C], 2000.
[8] Filiatrault, A. and Cherry, S., Performance evaluation of friction damped braced steel frames under simulated earthquakeloads[J]. Earthquake Spectra, 1987, 3(1): 57 - 78.
[9] Aiken, I.D., Kelly, J.M., Earthquake simulator testing and analytical studies of two energy-absorbing systems for multistorystructures[R]. Report No. UCB/EERC-90/03, University of California, Berkeley,1990.
[10]吴斌,欧进萍.拟粘滞摩擦耗能器的性能试验与分析[J].世界地震工程,1999;,15(1):1～12.
[11]龙驭球,包世华.结构力学教程[M].高等教育出版社,1987.
[12] 钟万勰,何穷,刘正兴.数值计算方法[M].中国建筑工业出板社,1991.
[13]吴斌,欧进萍.Pall摩擦耗能器的设计方法[J].哈尔滨建筑大学学报,1997,30(4):9～14.
[2] Ou Jinping, et al., Recent advances in research on and application of passive energy dissipation spstems[J]. 地震工程与工程振动,1996,16(3):72-98.
[3] Betero, V.V., Performance-based seismic engineering: conventional vs. innovative approaches[A]. Paper 2074, 12WCEE[C], 2000
[4] Pall, A.S. and Marsh, C., Response of friction damped braced frames[J]. Journal of the Structural Division, ASCE, 1982, Vol.108, No.ST6: 1313-1323.
[5] Pall, A.S., Pall, R., Friction-damper used for seismic control of new and existing buildings in Canada[A]. ATC 17-1, Semi-nar on Seismic Isolation, Passive Energy Dissipation[C], 1993, Vol.2: 675-686,
[6] Hale, T.H., and Pall, R., Seismic upgrade of the Freeport water reservoir, Sacramento, Calilbrnia[A]. Paper 0269, 12WCEE[C],2000.
[7] Chandra, R., Friction-dampers fOr seismic control of La Gardenia towers south city, Gurgaon, India[A]. Paper 2008,12WCEE[C], 2000.
[8] Filiatrault, A. and Cherry, S., Performance evaluation of friction damped braced steel frames under simulated earthquakeloads[J]. Earthquake Spectra, 1987, 3(1): 57 - 78.
[9] Aiken, I.D., Kelly, J.M., Earthquake simulator testing and analytical studies of two energy-absorbing systems for multistorystructures[R]. Report No. UCB/EERC-90/03, University of California, Berkeley,1990.
[10]吴斌,欧进萍.拟粘滞摩擦耗能器的性能试验与分析[J].世界地震工程,1999;,15(1):1～12.
[11]龙驭球,包世华.结构力学教程[M].高等教育出版社,1987.
[12] 钟万勰,何穷,刘正兴.数值计算方法[M].中国建筑工业出板社,1991.
[13]吴斌,欧进萍.Pall摩擦耗能器的设计方法[J].哈尔滨建筑大学学报,1997,30(4):9～14.
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