地震模拟振动台多向扩展系统

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (8) : 73-77.

论文

地震模拟振动台多向扩展系统

程麦理，李青宁，吴多，毕研超，苗如松

作者信息 +

Seismic Simulation Shaking Table Multidirectional Expansion System

CHENG Mai-li, LI Qing-ning, WU Duo, BI Yan-chao, MIAO Ru-song

Author information +

文章历史 +

摘要

为利用单振动台实现大跨度空间结构多维多点激励的振动台试验研究，提出地震模拟振动台改向扩展系统概念。结合曲杆机构改变地震波传递方向的特性，对地震模拟振动台扩展系统进行结构动力分析。根据多点激励理论，考虑上部结构惯性力对子台的作用，推导出子台等效质量的计算公式。在谐波荷载作用下，给出多向扩展系统动力响应的解析式。研究表明，多向扩展系统能有效改变地震波的峰值加速度、相位和传递方向，是一种利用单振动台实现大跨结构多维多点激励试验研究的有效方法。算例结果验证了本文理论的正确性，为振动台多向扩展系统的研制提供理论依据。

Abstract

For the multidimensional multipoint excitation vibration table test research of large span space structure by using single vibration table, put forward seismic simulation shaking table redirection extended system concept. Combined with curved mechanism be able to change the direction of the seismic wave transfer characteristics, make structural dynamic analysis of the shaking table expand system. Based on the multi-point excitation theory, consider the inference of superstructure inertia force to sub-units, the formula of the sub-units of equivalent mass. Under the harmonic load, multidirectional extended system dynamic response analytic expression has given. Studies show that multidirectional extended system can effectively change the peak of seismic wave acceleration, phase and the transfer direction, it is a effective method to achieve the large span structure multipoint excitation test using single shaking table. Examples show that the theory is correct, the method is reliable.

导出引用

程麦理，李青宁，吴多，毕研超，苗如松. 地震模拟振动台多向扩展系统[J]. 振动与冲击, 2016, 35(8): 73-77

CHENG Mai-li, LI Qing-ning, WU Duo, BI Yan-chao, MIAO Ru-song. Seismic Simulation Shaking Table Multidirectional Expansion System[J]. Journal of Vibration and Shock, 2016, 35(8): 73-77

参考文献

[1] 周颖,吕西林. 建筑结构振动台模型试验方法与技术[M]. 北京:科学出版社,2012.
ZHOU Ying, LV Xi-lin. Building structures shaking table test methods and techniques [M]. Beijing: Science Press, 2012. (in Chinese)
[2] Zerva A. Spatial variation of seismic ground motions: modeling and engineering applications [M]. Florida: CRC Press Inc, 2009.
[3] 陈彦江,张德义,李晰. 空间变化地震作用下钢管混凝土拱桥的抗震分析[J]. 工程力学,2013,30(12):99-106.
CHEN Yan-jiang, ZHANG De-yi, LI Xi. Stochastic seismic analysis of a CFST arch bridge under spatially varying ground motions [J]. Engineering Mechanics, 2013, 30(12): 99-106. (in Chinese)
[4] Konakli K, Der K A. Simulation of spatially varying ground motions including incoherence, wave-passage and differential site-response effects [J]. Earthquake Engineering and Structural Dynamics, 2011, 41(3): 495-513.
[5] 赵建锋,杜修力,韩强,等. 外源波动问题数值模拟的一种实现方式[J]. 工程力学,2007,24(4):52-58.
ZHAO Jian-feng, DU Xiu-li, HAN Qiang, et al. An approach to numerical simulation for external source wave motion [J]. Engineering Mechanics, 2007, 24(4): 52-58. (in Chinese)
[6] 杨昀,周列茅,周勇军. 弯桥与高墩[M]. 北京:人民交通出版社,2011.
Yang Yun, ZHOU Lie-mao, ZHOU Yong-jun. Curved bridge with high pier [M]. Beijing: China Communications Press, 2001. (in Chinese)
[7] 纪金豹,李晓亮,闫维明,等. 九子台模拟地震振动台台阵系统及应[J]. 结构工程师,2011,27:31-36.
JI Jin-Bao, LI Xiao-liang, YAN Wei-ming, et al. Research on the shaking table array and dynamic model test [J]. Structural Engineers, 2011, 27: 31-36. (in Chinese)
[8] Clough R W, Penzien J. Dynamics of structures [M]. New York: McGraw-Hill Inc, 1993.
[9] 亓兴军,李小军,申永刚. 地震行波输入下大跨连续刚构桥梁半主动控制效应分析[J]. 振动与冲击,2007, 26(2):117-120.
QI Xing-jun, LI Xiao-jun, SHEN Yong-gang. Semi-active control effect analysis for long-span continuous rigid-framed bridge under seismic travelling wave input [J]. Journal of vibration and shock, 2007, 26(2): 117-120. (in Chinese)
[10]周国良,鲍叶欣,李小军,等. 结构动力分析中多点激励问题的研究综述[J]. 世界地震工程,2009,25(4):25-32.
ZHOU Guo-liang, BAO Ye-xin, LI Xiao-jun, et al. Review on dynamic analyses of structures under multi-support excitation [J]. World Earthquake Engineering, 2009, 25(4): 25-32. (in Chinese)
[11]李忠献,史志利. 行波激励下大跨度连续刚构桥的地震反应分析[J]. 地震工程与工程振动,2003,23(2): 68-76.
LI Zhong-xian, SHI Zhi-li. Seismic response analysis for long-span continuous rigid-framed bridges under excitation of traveling waves [J]. Earthquake Engineering and Engineering Vibration, 2003, 23(2): 68-76. (in Chinese)
[12]屈铁军,王前信. 多点输入地震反应分析研究的进展[J]. 世界地震工程,1993,1:30-38.
QU Tie-jun, WANG Qian-xin. Progress in the research on the seismic response analysis of multi-point input [J]. World Earthquake Engineering, 1993, 1: 30-38. (in Chinese)