长孔螺栓摩擦阻尼器试验研究  

Experimental Research of Slotted Bolted Friction Device

作　　者：张艳霞[1,2] 赵文占 陈媛媛[1] 宁广[1] 

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学工程结构与新材料北京市高校工程研究中心,北京100044

出　　处：《工程抗震与加固改造》2015年第4期90-95,73,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金项目(51278027);城市地下空间开发利用中的基础理论和关键技术研究创新团队项目(PMX2013_014210_000166)

摘　　要：本文主要针对长孔螺栓摩擦阻尼器进行了往复荷载作用下的试验研究,研究摩擦接触面材料、长孔宽度及有无碟形垫片对阻尼器工作性能的影响,设计了5个试件进行循环加载试验。结果表明:摩擦接触面为钢-钢接触时,摩擦力稳定性较差,使用黄铜板做摩擦材料时,阻尼器在多次往复荷载作用下摩擦力变化幅度较小,稳定性良好;长孔宽度较大容易产生高强螺栓预紧力的损失,在摩擦面上分布不均匀以及黄铜板翘曲变形等现象,长孔宽度小的试件在摩擦力的对称性上表现出更加优越的性能;碟形垫片的使用能有效地控制摩擦力的离散程度。Slotted bolted friction device（ SBFD） is studied under cyclic loading in this paper,containing the materials of friction contact surface,the width of slot hole and the influence of belleville washer. Five specimens are designed and tested under cyclic loading,and the results show that： the steel surface contact leads to the weak stability of friction. And the amplitude of variation is small if the friction material was brass plate,coinciding the good stability. The larger width of the slot hole could easily lead to the loss of the bolt clamping force,which was also not uniform,and the buckling deformation of the brass plate. The symmetry of the friction force of the specimen with the small slot hole is better. The discrete degree of the friction force is limitted by the belleville washer.

关 键 词：长孔螺栓摩擦阻尼器 摩擦力稳定性 影响因素 

分 类 号：TU352.1[建筑科学—结构工程]