师骁, 王彦栋, 曲哲, 纪晓东. 含摩擦阻尼器钢连梁的往复加载试验[J]. 工程力学, 2016, 33(增刊): 156-160. DOI: 10.6052/j.issn.1000-4750.2015.05.S017
引用本文: 师骁, 王彦栋, 曲哲, 纪晓东. 含摩擦阻尼器钢连梁的往复加载试验[J]. 工程力学, 2016, 33(增刊): 156-160. DOI: 10.6052/j.issn.1000-4750.2015.05.S017
SHI Xiao, WANG Yan-dong, QU Zhe, JI Xiao-dong. CYCLIC LOADING TEST OF STEEL COUPLING BEAM WITH FRICTION DAMPER[J]. Engineering Mechanics, 2016, 33(增刊): 156-160. DOI: 10.6052/j.issn.1000-4750.2015.05.S017
Citation: SHI Xiao, WANG Yan-dong, QU Zhe, JI Xiao-dong. CYCLIC LOADING TEST OF STEEL COUPLING BEAM WITH FRICTION DAMPER[J]. Engineering Mechanics, 2016, 33(增刊): 156-160. DOI: 10.6052/j.issn.1000-4750.2015.05.S017

含摩擦阻尼器钢连梁的往复加载试验

CYCLIC LOADING TEST OF STEEL COUPLING BEAM WITH FRICTION DAMPER

  • 摘要: 提出一种用于高层建筑的含摩擦阻尼器钢连梁。摩擦阻尼器以外的型钢梁段即使在罕遇地震作用下也预期保持弹性,损伤只发生在摩擦片-钢板界面。采用高强螺栓与碟形弹簧串联为摩擦片-钢板摩擦界面施加正压力,以减小温度应力等因素对摩擦力的影响。地震过后,简单放松螺栓就可以释放结构残余变形,并可拆卸摩擦片以查看其损伤程度,如有必要可方便地更换摩擦片。对该钢连梁进行往复加载试验。结果表明,选用的摩擦材料具有可靠的摩擦性能,摩擦阻尼器表现出稳定且优异的耗能能力。摩擦力相对比较稳定,未出现过大的超强,有利于简化周边连接构件的设计。

     

    Abstract: A steel coupling beam equipped with a friction damper in the mid span is proposed for the use in high-rise buildings. Damage is only likely to take place on the brake pad-to-steel friction interface while the other parts of the steel coupling beam are expected to remain elastic under major earthquakes. High-strength bolts and disc springs are placed in series to pressure multiple brake pad-to-steel interfaces to reduce the impact of temperature stress on the friction force. One can easily release the residual deformation after earthquake by loosening the bolts, either for damage inspection or for replacement if necessary. Cyclic loading tests on steel coupling beams with the proposed friction damper were conducted to show the reliable frictional behavior of the chosen material and superior energy dissipating capacity of the friction damper. The well-defined frictional force without much overstrength makes it easier to design the strength demand for adjacent elements and joints.

     

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