冷弯薄壁型钢组合楼盖振动性能试验及舒适度研究  

A Study on Vibration Performance Test and Serviceability of Cold-Formed Thin-Walled Steel Composite Slab Floor

作　　者：门雨 肖亚明[1] 王静峰[1,2] 庞帅 MEN Yu;XIAO Yaming;WANG Jingfeng;PANG Shuai(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China;Anhui Civil Engineering Structures and Materials Laboratory,Hefei University of Technology, Hefei 230009, China)

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]合肥工业大学安徽土木工程结构与材料省级实验室,合肥230009

出　　处：《建筑钢结构进展》2019年第4期70-77,102,共9页Progress in Steel Building Structures

基　　金：教育部新世纪优秀人才支持计划(NCET-12-0838)

摘　　要：为了研究冷弯薄壁型钢组合楼盖的振动性能,对3榀足尺比例的冷弯薄壁型钢组合楼盖开展了静载与动载试验。试验考察不同边界条件、楼盖梁形式、有无抗剪件对冷弯薄壁型钢组合楼盖振动性能的影响。研究结果表明:加强边界条件可以提高组合楼盖的刚度及自振频率,在实际工程的设计及应用时应考虑边界条件的影响;在相同截面高度下,不同截面形式的楼盖梁对组合楼盖的振动性能有一定影响;组合楼盖内部是否设置抗剪件对楼盖的刚度、自振频率与峰值加速度无影响。建议组合楼盖在1kN集中力的作用下最大挠度不大于2mm;在空载状态下,楼盖自振频率不宜小于15Hz;在正常使用阶段,楼盖自振频率不宜小于10Hz,振动强度不宜大于0.015m·s^-2。In order to observe the vibration serviceability of cold-formed thin-walled steel composite slab floor,static and dynamic load test are carried out on three cold-formed thin-walled steel composite slabs with full scale floor.The effects of boundary conditions,floor beams and shear bonds on the vibration performance of composite floor are investigated.Experimental results show that strengthening the boundary conditions can improve the stiffness and vibration frequency of composite slab floor,and the boundary condition should be considered in the design and application of real projects.Under the same section height,the floor beam in different section forms has certain influence to the vibration performance of the composite floor.There is no influence to the stiffness,vibration frequency and peak acceleration of the floor,whether or not the shear bonds are arranged in the composite floor.It is suggested that the maximum deflection of composite floor under the action of 1 kN concentrated force is less than 2 mm.Under the condition of no load,the natural frequency of floor should not be less than 15 Hz.In normal use,the natural frequency of floor should not be less than 10 Hz,and the vibration intensity should not be greater than 0.015 m·s-2.

关 键 词：组合楼盖 冷弯薄壁型钢 振动性能 舒适度 

分 类 号：TU392.1[建筑科学—结构工程] TU398