基于力矩平衡原理的秦兵马俑重心测量及临界地震加速度计算  

Measurement of the center of gravity of Qin Terracotta Warriors and calculation of critical seismic acceleration based on the principle of moment balance

作　　者：王亮[1] 王东峰[1] 常磊[1] 赵昆[1] 惠娜[1] 刘贵位 

机构地区：[1]陶质彩绘文物保护国家文物局重点科研基地,秦始皇帝陵博物院,陕西西安710600 [2]中国地震灾害防御中心,北京100029

出　　处：《文物保护与考古科学》2016年第1期101-107,共7页Sciences of Conservation and Archaeology

基　　金：国家文物局文物保护科学和技术研究课题资助(20110214)

摘　　要：随着近年来地震灾害的频发,分析浮放于俑坑中的秦兵马俑在地震波影响下的运动方式是秦俑地震灾害防御研究中的首要环节。本研究利用力矩平衡的原理测量秦兵马俑的重心位置,进而初步计算得到陶俑的临界地震加速度,依据陶俑的形体特征计算出每类陶俑的抗倾倒极限地震加速度,验证了测量结果的可靠性,为制定秦俑的地震设防等级和防震保护工作提供了基础数据。Because of frequent earthquakes in recent years, one of the top concerns about the Qin Terracotta Warriorsis the safety of terracotta army figurines placed directly on the ground. The moving or shaking orientation of figurines under the influence of seismic waves was studied withthe aim of preventing earthquake damage. This paper describes measurement of the center of gravity of each terracotta warrior using the principle of moment balance. Then a preliminary calculation was made on the critical seismic acceleration of each pottery figurine. The limit of anti -overturning seismic acceleration has been calculated, according to the shapes of the pottery figurines. Furthermore, the reliability of results has been verified, providing basic data for seismic alarm and protection of the Qin Terracotta Warriors from earthquakes. The advantages and disadvantages of the measurement methods and the potential forfurther study are also discussed in this paper.

关 键 词：秦兵马俑 力矩平衡 重心 临界地震加速度 

分 类 号：O312.2[理学—一般力学与力学基础]