CAJ | 학술논문

为使防屈曲支撑功能实现复合化,设计并制作了一种具有调谐质量减振功能的防屈曲支撑(tuning mass dampered-buckling restrained brace, TMD-BRB).通过对6个动力试件的拟斜动试验和2个静力试件的滞回性能试验,考察了试件的复合减震功能,以及接触面做法、弹簧布置和套筒加长等几个关键技术对试件减震性能的影响,得出最优构造.试验结果表明：轮式-套筒加长型 TMD-BRB,其 TMD 调谐精度高,动力系数大,周期特性明显；BRB性能方面,支撑在1/85支撑长度加载范围内滞回曲线稳定饱满,压拉比均值1.07,刚度退化和骨架曲线规律正常,30圈疲劳试验耗能下降10%,各项指标均满足国内外有关规定,且伴随钢芯变形能够实现 TMD 和 BRB 两种减震功能之间的自动切换.
위사방굴곡지탱공능실현복합화,설계병제작료일충구유조해질량감진공능적방굴곡지탱(tuning mass dampered-buckling restrained brace, TMD-BRB).통과대6개동력시건적의사동시험화2개정력시건적체회성능시험,고찰료시건적복합감진공능,이급접촉면주법、탄황포치화투통가장등궤개관건기술대시건감진성능적영향,득출최우구조.시험결과표명：륜식-투통가장형 TMD-BRB,기 TMD 조해정도고,동력계수대,주기특성명현；BRB성능방면,지탱재1/85지탱장도가재범위내체회곡선은정포만,압랍비균치1.07,강도퇴화화골가곡선규률정상,30권피로시험모능하강10%,각항지표균만족국내외유관규정,차반수강심변형능구실현 TMD 화 BRB 량충감진공능지간적자동절환.
In order to implement the composite function of BRB, a new type of buckling-restrained brace with tuning mass damper function (TMD-BRB) was designed and constructed. The composite function of vibration reduction and effect by contact surface craft, springs form and extension of tube in end-range place, were investigated by six dynamic and two static specimens. An optimal structure plan was obtained by contrast. Tests show that the wheel-tube with long making type TMD-BRB had an ideal tuning precision, a high dynamic coefficient and an obvious period performance of vibration. For its BRB performance, the specimen had a stable and plump hysteretic curve in 1 / 85 brace length. Various indexes, including 1. 07 tension-compression ratio, normal stiffness deterioration and skeleton curve, 10% energy consumption attenuation by 30 circles fatigue test, was accorded with the international regulations. The mechanical structure could also reach a constructional balance between the two composite vibration reduction functions with an automatic shift from TMD to BRB in earthquake.