CAJ | 학술논문

针对桥梁结构在地震、爆炸等冲击荷载作用下产生的碰撞及落梁震害，国内外抗震规范中建议采用构造措施对过大位移进行控制。限位装置与连梁装置分别用于补充支座与限位装置抗震能力的不足、限制桥梁结构过大位移的发生，两者的作用范围有所不同。结合已有研究成果，对强震下产生碰撞、有落梁危险的桥梁结构设置限位装置与连梁装置，研究其对结构过大位移的限制效果。研究结果表明，限位装置与连梁装置的设置能减小桥梁结构的过大位移，增加滑动墩处的地震荷载分担比及结构的整体性，但强震下仅采用限位装置时防碰撞及落梁的效果不甚理想，需采用连梁装置对其限位能力加以补充。
침대교량결구재지진、폭작등충격하재작용하산생적팽당급락량진해，국내외항진규범중건의채용구조조시대과대위이진행공제。한위장치여련량장치분별용우보충지좌여한위장치항진능력적불족、한제교량결구과대위이적발생，량자적작용범위유소불동。결합이유연구성과，대강진하산생팽당、유락량위험적교량결구설치한위장치여련량장치，연구기대결구과대위이적한제효과。연구결과표명，한위장치여련량장치적설치능감소교량결구적과대위이，증가활동돈처적지진하재분담비급결구적정체성，단강진하부채용한위장치시방팽당급락량적효과불심이상，수채용련량장치대기한위능력가이보충。
Seismic codes of bridges at home and abroad suggest that the structural measures can be used for control large displacements,in order to avoid collision and collapse caused by earthquake and explode.The dis-placement limited devices and unseating prevention devices are used to increase the seismic capacity of bearings and displacement limited devices respectively as supplement,but the functional scope of them are different.Based on the existing research conclusion,the displacement limited devices and unseating prevention devices have been set on the beam end in order to avoid collision and collapse,and their control effect have been studied.The re-search results show that the large displacement of bridge can be decreased by setting displacement limited devices and unseating prevention devices,and the earthquake sharing percent of side piers and integrality of bridge have greatly increased.However,the control effect of avoid collision and collapse was unsatisfactory when the displace-ment limited devices were used without unseating prevention devices,so set the two types of devices jointly was rea-sonable.