某砖石古塔结构动力性能测试与模拟分析  

Dynamic performance test and simulation analysis of a masonry pagoda

作　　者：胡程鹤 梁宁博 许臣[1,3] 孙闻鹤 黄里西 Hu Chenghe;Liang Ningbo;Xu Chen;Sun Wenhe;Huang Lixi(Inspection and Certification Co.,Ltd.MCC,Beijing 100088,China;Inspection and Certification(Chongqing)Co.,Ltd.MCC,Chongqing 400050,China;Central Research Institute of Building and Construction Co.,Ltd.MCC Group,Beijing 100088,China)

机构地区：[1]中冶检测认证有限公司,北京100088 [2]中冶检测认证(重庆)有限公司,重庆400050 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《山西建筑》2024年第6期8-11,共4页Shanxi Architecture

基　　金：国家重点研发计划项目“不可移动文物自然灾害风险评估与应急处置研究”(2019YFC1520800);国家重点研发计划项目“馆藏文物一体化防震关键技术研究”(2019YFC1521000);中冶检测专项课题“砖石古塔结构基本周期预测”(2022ZYZX001)。

摘　　要：古塔结构材料中存在大量未知物理力学指标,采用有限元方法能否有效地模拟计算古塔的动力特性一直是困扰文物工作者的重要问题。首先开展了对砖石古塔的现场动力性能测试,同时采用有限元方法对其动力特性进行了模拟计算,并将实测结果与模拟计算结果进行了对比。结果表明:采用现代砖砌块、砂浆材料的相关物理性能指标以及相应现场检测方法获得的力学性能指标,通过有限元方法模拟计算砖石古塔结构的动力性能是可行的。古塔结构实测的前两阶自振频率与有限元方法模拟计算得到的前两阶自振频率基本一致,偏差仅为0.8%,可以满足工程需要。There are a lot of unknown physical and mechanical parameters in the structural materials of ancient pagodas.Whether the finite element method can effectively simulate and calculate the dynamic characteristics of ancient pagodas is an important problem that puzzles cultural relics workers.In this paper,the field dynamic performance of the ancient masonry pagoda is tested first,and its dynamic characteristics are simulated by finite element method,and the measured results are compared with the simulated results.The results show that it is feasible to simulate and calculate the dynamic properties of ancient pagoda structure by finite element method using the relevant physical properties of modern brick blocks and mortar materials and the mechanical properties obtained by corresponding testing methods.The measured frequencies of the first two natural vibration orders of the ancient pagoda structure are basically consistent with those obtained by the finite element method,and the deviation is only 0.8%,which can meet the engineering needs.

关 键 词：砖石古塔 动力特性 模拟分析 

分 类 号：TU362[建筑科学—结构工程]