预制混凝土楼板抗震设计方法研究  

Study on Seismic Design Method of Precast Concrete Floor Slabs

作　　者：于婷 张敬书[1,2] 张广平 孙先磊 YU Ting;ZHANG Jing-shu;ZHANG Guang-ping;SUN Xian-lei(Key Laboratory of Mechanics on Disaster and Environment in Western China with the Ministry of Education,Lanzhou University,Lanzhou 730000,China;College of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China;China Energy Engineering Group Gansu Electric Power Design Institute Co.,Ltd.,Lanzhou 730000,China)

机构地区：[1]兰州大学西部灾害与环境力学教育部重点实验室,甘肃兰州730000 [2]兰州大学土木工程与力学学院,甘肃兰州730000 [3]中国能源建设集团甘肃省电力设计院有限公司,甘肃兰州730000

出　　处：《混凝土与水泥制品》2022年第8期50-55,共6页China Concrete and Cement Products

摘　　要：介绍了预制混凝土楼板抗震设计方法,并进行了案例验算。结果表明,目前预制混凝土楼板的水平力设计值由于考虑了高阶振型的作用总体较安全,但底层楼板的水平力设计值偏于危险,应适当加强;预制混凝土楼板在水平地震力作用下的内力计算采用水平深梁模型,简化了连接节点的受力情况;当处于地震烈度较大地区时,结构发生非线性变形并耗散部分能量,导致荷载的竖向分布呈非三角形线性分布。The evolution of seismic design method of precast concrete floor slabs are introduced and a case check is carried out.The results show that the calculation methods of horizontal design force of precast concrete floor slabs takes into account the role of high-order vibration modes,and the design value is relatively safe,but the design value of the ground floor is dangerous and should be properly strengthened.The horizontal deep beam model is used to calculate the internal force of precast concrete floor slabs under horizontal earthquake,which simplifies the stress of floor connections.When the height and seismic intensity of the structure are large,the structure will undergo nonlinear deformation and dissipate part of the energy,so that the vertical distribution of load is not triangular linear distribution.

关 键 词：预制混凝土楼板 抗震设计方法 高烈度地震 水平力设计值 荷载分布 

分 类 号：TU528.72[建筑科学—建筑技术科学]