（1 华北水利水电大学土木与交通学院， 郑州 450045; 2 北京清城华筑建筑设计研究院， 北京 100083; 3 中国中元国际工程有限公司， 北京 100089;  4 国机集团科学技术研究院有限公司, 北京 100080）

［摘要］以某城楼大跨度楼盖为工程背景，开展了钢-混凝土叠合板组合楼盖振动舒适度评估研究。首先通过现场动力特性测试获得的楼盖结构一阶竖向动力特性，校核了建立的整体结构精细化有限元模型，然后仿真分析得到了楼盖受单人行走、多人行走以及单人跳跃等多种激励的动力响应，最后开展了楼盖振动舒适度评价。结果表明：该新型楼盖结构竖向刚度整体较大，具有较好的振动舒适度；有限元建模可将混凝土叠合板等效为整体壳单元，根据刚度、质量等效原则增加板厚来模拟装饰面层，钢梁和混凝土板的连接可按刚接处理。研究结果可为类似楼盖振动舒适度评估与有限元精细化建模提供参考。

［关键词］钢-混凝土叠合板组合楼盖； 振动舒适度； 精细化有限元模型； 现场实测； 动力特性

中图分类号：TU311-3文献标识码：A文章编号：1002-848X(2021)02-0092-05

Study on vibration serviceability of a large-span steel-concrete composite  floor in a city gate

WANG Zhihao1, WANG Jinpei1, XU Ke2, HU Mingyi3,4

(1 School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, China; 2 THCA Architectural Design & Consulting Institute, Beijing 100083, China; 3 China IPPR International Engineering Co. Ltd., Beijing 100089, China; 4 SINOMACH Academy of Science and Technology Co. Ltd., Beijing 100080, China)

Abstract:The vibration serviceability evaluation of a steel-concrete composite  floor was carried out based on a large-span floor in a city gate. Firstly, the sophisticated finite element model of the whole structure was verified according to the first vertical dynamic mode of the  floor structure, which was derived from a field measurement. Then, the dynamic response of the floor, which was motivated by single walking, multi-person walking and single jumping, was obtained by numerical analysis. Finally, vibration serviceability evaluation of the floor was carried out. The research conclusions are as follows. The new type  floor structure has larger vertical  whole stiffness and better vibration serviceability. The concrete composite slab can be equivalent to a whole slab element and the decorative surface can be simulated by increasing the thickness of the slab based on the equivalent principle of stiffness and mass for in the finite element simulation. Furthermore, the connection between the steel beam and the concrete slab can be seen as rigid joint in the finite element model. The results can be used as reference for vibration serviceability evaluation and sophisticated finite element modeling of the similar floor.

Keywords:steel-concrete composite beam and slab floor; vibration serviceability; sophisticated finite element model; field measurement; dynamic characteristics

*国家自然科学基金面上项目（51878274），国机集团重大科技专项（SINOMAST-ZDZX-2017-05）。

作者简介：汪志昊，博士，教授，博士生导师，Email: wangzhihao@ncwu.edu.cn;通信作者：胡明祎，博士，高级工程师，硕士生导师，Email: hmyi2000@126.com。