高台基木结构在交通载荷作用下的振动响应研究  

DYNAMIC RESPONSE OF A TIMBER STRUCTURE WITH HIGH-PLATFORM FOUNDATION UNDER TRAFFIC LOADS

作　　者：王鑫[1] 孟昭博[2] 刘增荣[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]聊城大学建筑工程学院,聊城252059

出　　处：《力学与实践》2010年第4期40-46,共7页Mechanics in Engineering

基　　金：国家自然科学基金(59978038);陕西省重点实验室基金(05JS19)资助项目

摘　　要：以西安钟楼为研究背景,建立了钟楼-土层-隧道结构三者共同作用的三维有限元模型,通过动力有限元分析得到了模拟地铁列车载荷作用下钟楼的振动响应规律;根据现场全天候监测,得到了钟楼在地面交通载荷作用下的振动响应;在此基础上,利用SRSS方法将二者进行叠加,从而得到了钟楼木结构在地面和地下交通载荷共同作用下的动力响应,并根据规范对其进行了评估,所得结论为今后相近古建筑在交通振动载荷作用下的响应分析及评估提供了参考依据.The timber structure with high-platform foundation is the main form of historic buildings in China, such as bell tower and drum tower.Taking Xi＇an Bell Tower as an example,a three-dimensional finite element model of the bell tower-soil-tunnel structure interaction is built,and the dynamic response of the bell tower under simulated metro-induced loading is obtained by means of dynamic finite element analysis.The vibration response of the bell tower under ground traffic loads were obtained through all-weather field monitoring.These two results are combined by using the SRSS method to obtain the response of the timber structure of the bell tower under combined action of ground and underground traffic loadings.The structure may be evaluated according to the technical specifications,the results may serve as a reference for dynamic response analysis and assessment of similar historic buildings under traffic loads.

关 键 词：高台基 木结构 交通载荷 振动响应 

分 类 号：TU311.3[建筑科学—结构工程]