CAJ | 학술논문

以东莞虎门镇威远岛环岛路炮台及兵营遗址为研究对象，建立工程公路-山体-兵营整体三维数值分析模型。采用有限元程序进行动力时程分析，计算炮台、兵营在不同车辆轴重、行驶速度的振动响应，获得加速度、速度沿距离分布规律，分析各因素对遗址振动影响。结果表明，车速由40 km/h 增加到80 km/h 时炮台底座速度响应增加4％～13％，而兵营地基速度响应增加6％～30％；轴重由15 t增加到55 t时炮台底座、兵营地基响应与轴重成正相关增大。通过在震源处施加竖向变频率简谐作用力进行谐响应分析知模型卓越频率分别在10 Hz及40 Hz附近；外部交通振动荷载频率近10 Hz时，炮台底座、兵营地基振动响应最大。
이동완호문진위원도배도로포태급병영유지위연구대상，건립공정공로-산체-병영정체삼유수치분석모형。채용유한원정서진행동력시정분석，계산포태、병영재불동차량축중、행사속도적진동향응，획득가속도、속도연거리분포규률，분석각인소대유지진동영향。결과표명，차속유40 km/h 증가도80 km/h 시포태저좌속도향응증가4％～13％，이병영지기속도향응증가6％～30％；축중유15 t증가도55 t시포태저좌、병영지기향응여축중성정상관증대。통과재진원처시가수향변빈솔간해작용력진행해향응분석지모형탁월빈솔분별재10 Hz급40 Hz부근；외부교통진동하재빈솔근10 Hz시，포태저좌、병영지기진동향응최대。
Taking the old barracks and the fort relics,situated at Humen,Dongguan,as a dynamic analysis object,a whole 3D model was established for numerical simulation.In order to calculate the structural vibration response caused by a vehicle under different vehicle speeds,and with different axle weights,a time-historical analysis was completed by using finite element method.The vibration acceleration and velocity were investigated and the effect of moving vehicle load on the relics was analyzed.The results show that if the vehicle speed increases from 40km/h to 80 km/h,the velocity response of the fort base increases by 4%~13%;and that of the foundation of barracks increases by 6%~30%.Similarly,if the axle load increases from 15t to 55t,the response of the relics base appears positive correlation with the increasing of axle weight.By changing the frequency of the vertical harmonic force,the harmonic response analysis was achieved.It is shown that the predominant frequencies of the model are close to 10Hz and 40Hz. When the loading frequency is near 10Hz,the vibration response of the foundation of the old barracks and the fort reaches its maximum value.