CAJ | 학술논문

为研究隔震层增设抗风支座对风压较大地区的隔震结构减震效果的影响，以某实际隔震工程为背景，设定结构水平向减震系数分别小于0．53和0．40的目标，建立有（无）设置抗风支座的两种隔震结构模型，采用时程分析法对比结构在地震作用下的响应。结果表明，相比较于抗震结构，两种隔震结构地震响应都有显著的降低；无抗风支座隔震方案增加了LRB数量，满足抗风设计要求，但降低了减震效果；有抗风支座隔震方案，减少了LRB的数量，提高了减震效果。在正常使用条件和小震作用下，抗风支座参与工作，隔震层不屈服，当结构遭遇中震作用时，抗风支座能屈服并破坏，退出工作，不影响上部结构的减震效果。
위연구격진층증설항풍지좌대풍압교대지구적격진결구감진효과적영향，이모실제격진공정위배경，설정결구수평향감진계수분별소우0．53화0．40적목표，건립유（무）설치항풍지좌적량충격진결구모형，채용시정분석법대비결구재지진작용하적향응。결과표명，상비교우항진결구，량충격진결구지진향응도유현저적강저；무항풍지좌격진방안증가료LRB수량，만족항풍설계요구，단강저료감진효과；유항풍지좌격진방안，감소료LRB적수량，제고료감진효과。재정상사용조건화소진작용하，항풍지좌삼여공작，격진층불굴복，당결구조우중진작용시，항풍지좌능굴복병파배，퇴출공작，불영향상부결구적감진효과。
To investigate the vibration reduction effect of wind-resistant supports added on an isolation layer when an isolation structure locating at a large wind pressure area,taking an actual base-isolated structure as a background, setting goals that structural horizontal damping coefficient was less than 0.53 or 0.40,two models for the isolation structure with and without wind-resistant supports were established.Adopting the dynamic time-history analysis,the structural seismic responses of these two models were compared.The results showed that the seismic responses of the two models are significantly reduced compared with that of an aseismic structure;for the model without wind-resistant supports, LRB number increases to meet the anti-wind design requirements,but its aseismic effect reduces;while for the model with wind-resistant supports,LRB number decreases,its aseimic effect rises;under normal operation conditions and small earthquake,wind-resistant supports join working and the isolation layer does not yield,when the structure suffers a fortification earthquake ,the wind resistant supports yield,they are destroyed and out of work,but they do not affect the upper structure's aseismic effect.