武安州塔动力特性与抗震性能分析  

Mechanical Properties and Seismic Mechanism Analysis of Wu'anzhou Pagoda

作　　者：毛筱霏[1] 代兴鹏 何洁美 王杰 MAO Xiaofei;DAI Xingpeng;HE Jiemei;WANG Jie(School of Science,Xi'an University of Architecture and Technology,Xi'an 710055)

机构地区：[1]西安建筑科技大学理学院,西安710055

出　　处：《北京建筑大学学报》2024年第3期102-108,共7页Journal of Beijing University of Civil Engineering and Architecture

基　　金：国家自然科学基金项目(51878547)。

摘　　要：为给赤峰市武安州塔的加固保护工作提供依据,对古塔动力特性开展测试和数值模拟分析。首先对武安州塔的塔体材料力学参数进行测试;然后在考虑栣木构造措施基础上建立武安州塔的数值分析模型,对模型进行模态分析并通过经验公式进行验证;之后用该模型进行反应谱分析。研究结果表明,塔身周围4个正方位的券洞是塔体的薄弱部位,塔身和1~4层束腰部位出现拉应力,超出了砌体材料的抗拉强度极限值;塔体3层及以上已产生轻微破坏,存在较大安全隐患,需采取相应加固保护措施。To provide a basis for the reinforcement and protection work of Wu'anzhou pagoda in Chifeng city,tests and numerical simulation analyses of the dynamic characteristics of the ancient tower were carried out in the field of structural mechanics.First,the mechanical parameters of the tower body material of Wu'anzhou pagoda were tested and calculated.Then,a numerical analysis model of Wu'anzhou pagoda was established,taking into account the timber structural measures.The model underwent modal analysis,and the results were validated using empirical formulas.Subsequently,the model was used for response spectrum analysis.The research results indicate that the four corner holes around the tower body are weak points of the tower.Tensile stresses were observed in the tower body and the 1st to 4th-floor waist areas,exceeding the tensile strength limit of the masonry material.The tower's 3rd floor and above have experienced slight damage,posing significant safety risks,requiring corresponding reinforcement and protection measures.

关 键 词：砖石古塔 动力测试 有限元模拟 单点反应谱 抗震性能 

分 类 号：TU311[建筑科学—结构工程]