地震作用下馆藏石碑稳定性分析  

Analysis of Stone Stele Stability during Earthquakes

作　　者：秦立科[1,2,3] 陈国栋 甄刚 周萍 贾甲 张刚 张安兴 Qin Like;Chen Guodong;Zhen Gang;Zhou Ping;Jia Jia;Zhang Gang;Zhang Anxing

机构地区：[1]西安科技大学,建筑与土木工程学院,陕西西安710054 [2]陕西省文物保护研究院,陕西西安710075 [3]砖石质文物保护国家文物局重点科研基地,陕西西安710075 [4]西安碑林博物馆,陕西西安710001

出　　处：《文博》2021年第6期90-97,共8页

基　　金：国家重点研发计划“馆藏文物一体化防震关键技术研究”(项目编号:2019YFC1500443);砖石质文物保护国家文物局重点科研基地开放课题“温度变化对灰岩石刻风化机理前期研究”(项目编号:ZK2016001)的资助。

摘　　要：地震作用下石碑稳定性评估是石碑抗震加固及预防性保护的前提和基础。本文分析了地震作用下石碑稳定性失稳模式,采用拟静力法推导出了整体倾覆、碑身倾覆和裂缝二次开裂三种失稳模式的稳定性计算公式;分析了榫头尺寸、裂缝粘接强度、裂缝角度、裂缝高度、地震影响系数及竖向地震等因素对石碑稳定性安全系数影响。A scientific evaluation of the stability of stone steles during earthquake is the prerequisite and foundation of quake-proof reinforcement and preventive protection of them.This article analyzes a simulated instability mode of stone steles under earthquake.The research applies the pseudo-static method to deduce calculation equation for three modeled instability conditions when the entire body is overturned,when the main body of the stele is overturned,or when the cracks on the body widen.It further analyzes the impact of several parameters on the stability and safety of the stone steles,including the size of the tenon’s head,the bonding strength in the crack,the angle of the crack,the height of the crack,and the seismic impact as well as vertical earthquake.

关 键 词：石碑 地震 失稳模式 西安碑林博物馆 怀仁集王羲之书圣教序碑 

分 类 号：K879.3[历史地理—考古学及博物馆学]