含浮放石碑文物建筑隔震设防指标研究  

SEISMIC FORTIFICATION FOR DESIGN OF BASE ISOLATION BUILDINGS WITH FREE STANDING STELE RELICS

作　　者：艾华浩 许松健 王锶钰 王载 潘鹏[3] AI Hua-hao;XU Song-jian;WANG Si-yu;WANG Zai;PAN Peng(Civil Engineering Department,Tsinghua University,Beijing 100084,China;China Architecture Design&Research Group,Beijing 100044,China;Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学土木工程系,北京100084 [2]中国建筑设计研究院有限公司,北京100044 [3]清华大学土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《工程力学》2025年第4期159-166,共8页Engineering Mechanics

基　　金：北京市科技计划课题项目(ZZ201100008220010)。

摘　　要：将石碑文物集中浮放于博物馆中有利于文物的展示和维护,但在地震作用下馆内浮放石碑容易因博物馆建筑未合理防震而发生破坏。对博物馆建筑采取隔震措施是提高博物馆建筑抗震能力,进而保护馆内文物的有效措施。为指导博物馆建筑隔震设计,该文研究浮放石碑的抗震能力以及建筑隔震设防指标。现行规范对于竖向地震影响考虑过小,且未考虑石碑碑底变形影响,该文针对以上问题提出了更合理的浮放石碑文物水平加速度限值。通过理论分析,得到了简谐激励下避免浮放石碑进入摇摆状态的容许加速度谱,并选择容许加速度谱在楼面响应频率范围的最小值作为隔震建筑楼面加速度限值。经有限元模拟验证,理论分析得到的石碑容许加速度谱相比于现行规范更为安全与合理。基于理论分析得到的建筑隔震设防指标进行隔震设计可有效保护建筑内浮放石碑文物的安全。Free standing stele relics is a common form of stele display in museum for aesthetics and easy maintenance.However,the relics are prone to damage during earthquakes because of inadequate seismic fortification of the museums.Seismic isolation is an effective measure to improve the seismic performance of the museum facilities and protect the stele relics.To guide the seismic design of the museum facilities,studied were the seismic responses of the stele relics and the seismic isolation fortification of host buildings.The current specification considers too little the impact of vertical earthquake and the deformation of the stele bottom.Thusly,proposed is a more reasonable limit of the horizontal acceleration of free-standing stele relics.Through theoretical analysis,studied are the allowable acceleration spectra of stele relics under harmonic excitation,and selected is the minimum value of the allowable acceleration spectrum in the designated frequency range for the floor vibration of base isolation buildings as the design limit of the floor acceleration.It is determined that the allowable acceleration spectrum derived from theoretical analysis is more accurate and conservative than current specification through finite element analysis.Designing the isolation system of buildings upon the seismic fortification limit proposed is effective in protecting the free-standing stele relics from overturning.

关 键 词：文物防震 抗震性能 浮放石碑 容许加速度谱 隔震设计 

分 类 号：TU352.12[建筑科学—结构工程]