地铁诱发振动对博物馆文物的影响属微振动疲劳损伤，为保证文物安全，开展地铁振动对馆藏文物影响的试验研究与数值分析。进行文物材料静力试验、疲劳试验和相应有限元计算分析，深入分析文物材料的力学性能变化规律、静力及动力效应。研究结果表明：文物材料静力强度介于5MPa~28MPa之间；疲劳试验频率设定于10Hz~20Hz之间，在交变荷载峰值为自身静力强度30%的换算荷载作用下，文物材料能够经受100万次疲劳振动不发生破坏；速度幅值为1mm/s时，在1~80Hz频率范围内，文物模型最大动应力值远小于其疲劳强度，不会发生微振动损伤；频率一定时，速度幅值与文物模型最大动应力值呈线性增加关系，故可以通过限制振动速度幅值来控制文物动应力值，保证博物馆文物的安全。
Abstract
The vibration caused by metro is slight fatigue damage of vibration to museum collections. To ensure the safety of collections, this paper has been explored the effect of vibration on museum collections caused by metro. This paper based on the date of museum collections in static and fatigue test and the analysis of finite element model. Get the conclusions through analyzing the results of changes in mechanical properties and dynamic effects about museum collections. The results show that: The static strength of materials ranges between 5MPa ~ 28MPa;. Fatigue test frequency ranged from 10 to 20Hz, the alternating peak load translated from 30% of static strength, the materials can stand the fatigue vibration for 1000 thousand views. When the maximum of velocity is 1mm/s, frequency ranged from 1 to 80Hz, the artifacts model’s stress value is much smaller than the fatigue strength, the artifacts are safe. When the frequency is certain, the maximum of velocity and artifacts model’s stress value increased linearly. To ensure the safety of artifacts, we can control the artifacts model’s stress value by limiting the maximum of velocity.
关键词
馆藏文物 /
交通振动 /
疲劳试验
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Key words
Museum collections /
traffic vibration /
fatigue test
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参考文献
[1] 王耀峰. 地铁振动对博物馆建筑及文物影响研究[D].北京交通大学,2011: 1-5.
WANG Yaofeng. Simulation of subway vibration and it’s effect on museum structures and cultural relic. [D]. Beijing Jiao tong University.2011: 1-5 (in Chinese)
[2] 夏倩, 屈文俊. 地铁振动对既有砌体结构影响规律及因素数值分析[J]. 振动与冲击, 2014, 33(6): 189-194+200.
XIA Qian, QU Wenjun. Numerical analysis on metro train-induced vibrations and their influenced and affecting factors on existing masonry building [J]. Journal of vibration and shock, 2014, 33(6): 189-194+200. (in Chinese)
[3] 成都博物馆新馆地铁所致振动控制计算分析和试验研究理论分析报告 [R].中国航空规划建设,北京交通大学.2011.
The analysis of vibration control and experimental study of the theoretical analysis to Chengdu New Museum caused by subway. [R]. Chinese Aviation Planning and Construction Co. Ltd., Beijing Jiao tong University. 2011 (in Chinese)
[4] 葛家琪, 马伯涛, 庞玉涛等. 汽车所致虎门遗址振动全过程性能化研究[J]. 振动与冲击, 2014, 33(14): 95-100+131.
GE Jiaqi, MA Botao, PANG Yutao, et al. Whole process performance-based analysis on vibration of Humen site induced by automobile running [J]. Journal of vibration and shock, 2014, 33(14): 95-100+131. (in Chinese)
[5] 贾颖绚，郭猛，刘维宁. 列车振动荷载对古建筑的动力影响 [J].北京交通大学学报, 2009,33(1):118-122.
JIA Yingxu, GUO Meng, LIU Weining. Dynamic effect of train—induced vibration on historic buildings. [J].Journal Beijing Jiao tong University. 2009,33(1):118-122. (in Chinese)
[6] Luc SchiUemans．Impact of Sound and Vibration of the North-South High-Speed Railway Connection Through the City of Antwerp Belgium[J]．Journal of Sound and Vibration，2003，267：637-649．
[7] GB/T 50452-2008古建筑防工业振动技术规范[S]. 中华人民共和国,2009
GB 50452T-2008. Technical specifications for protection of historic buildings against man-made vibration. [S] People's Republic of China, 2009 (in Chinese)
[8] 孙立. 氧化铝陶瓷的静疲劳与循环疲劳特性及寿命分析[J]. 陶瓷研究报, 1999, 14(4): 1-4.
SUN Li. Static and cyclic fatigue behavior and lifetime evaluation of Al2O3 [J]. Ceramic Studies Journal, 1999, 14(4): 1-4. (in Chinese)
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