CAJ | 학술논문

为探索馆藏浮放文物的有效抗震加固方法,采用振动台试验手段,研究了传统方法加固浮放文物的抗震性能。基于故宫博物院某展柜原型尺寸,制作了1：1比例陈列柜模型。在陈列柜内浮放一轻质陶瓷文物,分别考虑采用砂子、塑料卡、鱼线、橡皮泥及磁铁加固文物,进行了振动台试验。通过白噪声激励,获得了陈列柜基频分布;通过输入不同强度、不同类型的地震波,获得了不同方法加固条件下陈列柜和文物的位移响应、加速度响应和和动力放大系数,评价了不同方法的加固效果。结果表明：陈列柜的基频与输入地震波相差较大,这是陈列柜震害不明显的主要原因之一;传统方法加固文物后,输入地震波的加速度仍有一定放大,但是与加固前文物相比,文物的位移和加速度响应均有所减小,且文物因摇晃幅度而产生倾覆的可能性减小。此外,从减小文物加速度响应峰值角度考虑,橡皮泥和鱼线加固文物效果优于其它方法。试验结果可为文物防震保护研究提供较全面的参考。
위탐색관장부방문물적유효항진가고방법,채용진동태시험수단,연구료전통방법가고부방문물적항진성능。기우고궁박물원모전거원형척촌,제작료1：1비례진렬거모형。재진렬거내부방일경질도자문물,분별고필채용사자、소료잡、어선、상피니급자철가고문물,진행료진동태시험。통과백조성격려,획득료진렬거기빈분포;통과수입불동강도、불동류형적지진파,획득료불동방법가고조건하진렬거화문물적위이향응、가속도향응화화동력방대계수,평개료불동방법적가고효과。결과표명：진렬거적기빈여수입지진파상차교대,저시진렬거진해불명현적주요원인지일;전통방법가고문물후,수입지진파적가속도잉유일정방대,단시여가고전문물상비,문물적위이화가속도향응균유소감소,차문물인요황폭도이산생경복적가능성감소。차외,종감소문물가속도향응봉치각도고필,상피니화어선가고문물효과우우기타방법。시험결과가위문물방진보호연구제공교전면적삼고。
To find effective supporting methods for free - standing cultural relics in museums, the aseismic behavior of a cultural relic supported by traditional methods was studied by shaking table tests. Based on the actual size of a showcase in the Palace Museum, a 1 ： 1 scale model was built. A light ceramic cultural relic was put in the showcase by free - standing mode. Five traditional methods were considered for supporting the relic： decreasing the center of mass of the relic using sand, plastic fastener support, tying with nylon lines, application of plasticene and magnetic attraction. Shaking table tests were then carried out to validate the various supporting effects. Using white noise excitation, the basic frequency of the showcase was obtained; by inputting earthquake waves of different type and intensity, seismic responses of both the showcase and he relic were studied. The aseismic results using these five traditional methods are discussed. The experiments show that prominent frequency ingredients of the showcase are far greater than those of the input earthquake waves, which is the main reason why the showcase is not damaged seriously. The experiments also show that although acceleration of input earthquake waves are still focused on the relic after it is supported by any of the five methods, the peak acceleration and displacement values decrease, and the probability of the relic being overturned due to over large oscillation decreases greatly. In addition, nylon line tying and plasticene met, hods are best so far as far as mitigation of the acceleration response value is concerned.