CAJ | 학술논문

通过对矩形截面渡槽的单跨模型进行动力试验研究,探讨了渡槽在刚性地基强震条件下的调谐液体阻尼器(TLD)效应；通过调节槽内水位,研究了水体横向减震作用与深宽比的关系。试验结果表明,水体的晃动及水波破碎对渡槽的横向动力响应起到了 TLD 减震作用。渡槽内水位增加会改变结构的动力特性,使渡槽结构自振频率下降。在强震作用下,TLD 横向减震效果随水位变化发生波动,当槽内水体晃动频率与渡槽结构自振频率接近时,减震作用最为显著。
통과대구형절면도조적단과모형진행동력시험연구,탐토료도조재강성지기강진조건하적조해액체조니기(TLD)효응；통과조절조내수위,연구료수체횡향감진작용여심관비적관계。시험결과표명,수체적황동급수파파쇄대도조적횡향동력향응기도료 TLD 감진작용。도조내수위증가회개변결구적동력특성,사도조결구자진빈솔하강。재강진작용하,TLD 횡향감진효과수수위변화발생파동,당조내수체황동빈솔여도조결구자진빈솔접근시,감진작용최위현저。
Based on tests of a rectangular one-span simply supported aqueduct, the tuned liquid damper (TLD) effect on the aqueduct under the condition of a rigid foundation subjected to strong vibration was analyzed. The relationship between the transverse damping effect and the ratio of depth to width were studied by adjusting the water level. The test results demonstrated that water sloshing and wave breaking had a TLD effect on the aqueduct structure; the increase of the water level in the aqueduct changed the dynamic properties of the structure, causing the self-vibration frequency of the structure to decrease; during strong vibration, the TLD effect fluctuated with the change of water level; and the most significant TLD effect occurred when the water sloshing frequency was close to the self-vibration frequency of the structure.