CAJ | 학술논문

为研究腹板式钢制防屈曲支撑及普通支撑在动力荷载下力学性能，对装有腹板式钢制防屈曲支撑及普通支撑框架结构进行模拟地震振动台试验，比较两种支撑的减震效果。采用有限元方法进行振动台试验数值计算。试验及有限元分析结果均表明，腹板式钢制防屈曲支撑对结构位移反应有较好控制效果，为理想的消能装置。小震时两种框架结构层间位移基本相同，亦可为结构提供初始刚度；随地震峰值的增加框架结构层间位移远小于普通支撑框架结构，腹板式钢制防屈曲支撑可在主体结构进入弹塑性变形前消耗地震能量，降低结构损伤。
위연구복판식강제방굴곡지탱급보통지탱재동력하재하역학성능，대장유복판식강제방굴곡지탱급보통지탱광가결구진행모의지진진동태시험，비교량충지탱적감진효과。채용유한원방법진행진동태시험수치계산。시험급유한원분석결과균표명，복판식강제방굴곡지탱대결구위이반응유교호공제효과，위이상적소능장치。소진시량충광가결구층간위이기본상동，역가위결구제공초시강도；수지진봉치적증가광가결구층간위이원소우보통지탱광가결구，복판식강제방굴곡지탱가재주체결구진입탄소성변형전소모지진능량，강저결구손상。
The shaking table tests of a steel structure with innovative H type steel-unbuckling-braces (SUB)and with conventional central braces were conducted to compare the dynamic characteristics and seismic responses of the structure with one of the two kinds of braces.The effect of the two braces on seismic behaviors of the structure were analysed respectively.A finite element analysis was carried out and its result was compared with the experimental result. The results of tests and calculations show that the Innovative H type Steel -Unbuckling -Brace presented provides initial stiffness as the conventional central brace and the layer displacement of the two frameworks is almost the same in normal using.But the layer displacement of the framework with H type SUB is far less than that with conventional brace under middle and strong earthquakes,because the SUB dissipates earthquake input energy before the framework enters into the stage of elastic-plastic degeneration,which will reduce the structural damage.