吊车荷载对检修库上盖振动影响的仿真分析  

Simulation analysis on influence of crane loads on over-track building vibrations of a repair shed

作　　者：欧阳康淼 曾钦娥[2] 何蕾[2] 

机构地区：[1]北京城市快轨建设管理有限公司,北京100027 [2]北京市劳动保护科学研究所,北京100054

出　　处：《建筑结构》2015年第19期92-95,共4页Building Structure

基　　金：高振动环境区域建筑振动和噪声测试能力建设(PXM2014_178304_000005_00132840)

摘　　要：对北京某车辆段检修库上盖振动进行测试,测试结果表明吊车荷载作用下检修库上盖振动较大。采用数值仿真方法,从上盖建筑物振动控制的角度出发,对吊车荷载作用下车辆段检修库立柱截面、立柱间距、有无转换层及有无上盖建筑物对上盖振动的影响进行分析。分析结果表明,立柱截面变化对上盖振动影响较小,可忽略不计,而立柱间距对上盖振动影响较为明显;增加转换层可降低上盖的振动,最大Z振级平均降低3.1dB,增加上盖建筑物后上盖振动有所减小,最大Z振级平均降低1.95dB。Over-track building vibration of a car depot repair shed in Beijing was tested. Resuhs show that over-track building vibration of the repair shed is large under the crane loads. From the perspective of controlling the over-track building vibration, analyses were carried out on the influential factors on the over-track building vibration under the crane loads, including column section size, space between columns, existence of transfer story and existence of over-track buildings. Results show that the influence of column section size can be neglected and space between columns has significant influence on the over-track building slab vibration. Adding either transfer story or over-track buildings can reduce the over-track building slab vibrations, by averagely 3. ldB and 1.95dB respectively.

关 键 词：吊车荷载 检修库 上盖建筑 振动 

分 类 号：X593[环境科学与工程—环境工程]