预应力橡胶隔震支座力学性能试验研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
在对预应力橡胶隔震支座(PRB)进行水平和竖向单调静力加载试验基础上,研究了其竖向刚度和水平刚度等力学性能及变化规律,对适用于计算普通橡胶隔震支座(RB)的竖向刚度公式进行修正,同时提出PRB水平刚度的简化计算方法。此外,通过对PRB进行反复加载试验,研究了其水平滞回耗能性能。研究结果表明,PRB竖向刚度趋于常数,但其计算公式不能沿用适应于RB竖向刚度计算公式;PRB的水平刚度为变刚度,这有利于地震时的水平限位;与RB相比,PRB具有较好的耗能能力。
Based on the tests of pre-stressed rubber isolation bearings( PRB) under horizontal and vertical monotonic static loadings,the vertical and horizontal stiffness of PRB and its variation rules were studied. The conventional formula of vertical stiffness for rubber isolation bearings( RB) was revised and the simplified calculation method of horizontal stiffness for PRB was also proposed. Moreover,through the cyclic loading test on PRB,the hysteretic energy dissipation capacity of PRB was studied. The results show that the vertical stiffness of PRB tends to be a constant value,but the calculation formula of RB cannot be applied to PRB. The horizontal stiffness of PRB is variable stiffness,which is conducive to the horizontal displacement limitation under the earthquake. In addition, compared to conventional RB, PRB has a considerable capacity of energy dissipation.
引文
[1]SKINNER R I,ROBINSON W H,MCVERRY G H.An introduction to seismic isolation[M].Chichester:John Wiley&Sons,1993.
    [2]周锡元,马东辉,曾德民,等.用刚性板连接的组合橡胶支座水平刚度计算方法[J].土木工程学报,2000,33(6):38-44.
    [3]周正华,周雍年,卢滔,等.竖向地震动特征研究[J].地震工程与工程振动,2003,23(3):25-29.
    [4]AMARNATH K,MICHAEL C C.Testing and modeling of pre-stressed isolators[J].Journal of Structural Engineering,2005,131(6):857-866.
    [5]KANG B S,KANG G J,MOON B Y.Hole and lead plug effect on fiber reinforced elastomeric isolator for seismic isolation[J].Journal of Materials Processing Technology,2003,140(1-3):592-597.
    [6]彭天波,李建中,范立础.双曲面球型减隔震支座的竖向位移分析[J].同济大学学报:自然科学版,2009,35(9):1181-1185.
    [7]周锡元,韩淼,曾德民,等.具有软着陆保护的橡胶支座隔震体系[J].建筑结构学报,2000,21(5):2-9.
    [8]张永山,颜学渊,王焕定,等.三维隔震抗倾覆支座力学性能试验研究[J].工程力学,2009,26(S1):124-126.
    [9]邹立华,饶宇,黄凯,等.预应力厚层橡胶支座隔震性能研究[J].建筑结构学报,2013,34(2):76-82.
    [10]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
    [11]徐永秋,刘文光.厚层橡胶隔震支座的竖向力学性能与试验分析[J].浙江建筑,2008,25(6):30-32.
    [12]何文福,刘文光,杨彦飞,等.厚层橡胶隔震支座基本力学性能试验[J].解放军理工大学学报:自然科学版,2011,12(3):258-263.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心