《馆藏文物防震规范》关键技术——博物馆楼层水平动力放大系数研究  

Key technology of Specifications for seismic protection of museum collections:research on the floor horizontal dynamic amplification factor of museum

作　　者：马伯涛 葛家琪 吴来明[2] 宋毛毛 李瑞丹 Ma Botao;Ge Jiaqi;Wu Laiming;Song Maomao;Li Ruidan(China Aviation Planning and Design Institute（Group）Co.,Ltd.,Beijing 100120,China;Shanghai Museum,Shanghai 200231,China;School of Mechanics and Civil Engineering,China University of Mining and Technology（Beijing）,Beijing 100083,China)

机构地区：[1]中国航空规划设计研究总院有限公司,北京100120 [2]上海博物馆,上海200231 [3]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《建筑结构》2018年第19期19-23,共5页Building Structure

基　　金：北京市科技新星计划资助项目（Z171100001117087）.

摘　　要：针对《馆藏文物防震规范》（WW/T 0069—2015）第4.4.2条中楼层水平动力放大系数展开研究。首先,选定计算楼层水平动力放大系数的动力学研究方法和概率统计基本理论;其次,基于不同博物馆馆类型、不同结构类型、不同建筑场地和不同地震强度的钢筋混凝土结构建立多个有限元模型,分别采用四条地震波进行激励求取其加速度包络值,应用概率统计理论方法求得博物馆各楼层具有95%保证率的楼层水平动力放大系数;最后,通过参数优化,逐个剔除对楼层水平动力放大系数贡献率小的参数,得到两参数的楼层水平动力放大系数。研究提出了适用于规则体型钢筋混凝土博物馆结构的楼层水平动力放大系数,可通过结构层数和楼层两参数查表得到,便于规范中经验公式法实施。The research on the horizontal dynamic amplification factor of the floor in section 4.4.2 of Specification for seismic protection of museum collections（WW/T 0069—2015） was carried out. Firstly, the method of dynamic research and the basic theory of probability statistics were selected to calculate the floor horizontal dynamic amplification factor. Secondly, many finite element models of reinforced concrete structure with different museum types, different structure types, different construction sites and different seismic intensities were established, which were respectively used 4 seismic waves to excite to obtain its acceleration envelope values, and the probability statistics theory was applied to calculate the floor horizontal dynamic amplification factor of the museum with 95% guarantee rate. Finally, through the parameter optimization, parameters of small contribution rate to floor horizontal dynamic magnification factor were removed one by one, and floor horizontal dynamic magnification factor with two parameters was obtained. The research put forward that floor horizontal dynamic magnification factors which are suituble for the structure of regular reinforced concrete museums can be obtained by the total number of floors and the floor number, which facilitates the implementation of the empirical formula method of the specification.

关 键 词：馆藏文物 防震 楼层水平动力放大系数 概率统计 

分 类 号：TU352[建筑科学—结构工程]