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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。
Vibration test of the roof of a vehicle depot in Beijing is carried out. The test results show that the vibration of the cover of the depot under the crane load is greater. Based on the vibration control of the superstructure, the influence of the cross-section of the vehicle section, column spacing, presence or absence of the transfer floor and the presence or absence of superstructure on the vibration of the superstructure are analyzed by using numerical simulation method. . The analysis results show that the variation of the column cross section has little influence on the vibration of the superstructure, and the influence of the column spacing on the vibration of the superstructure is obvious. The increase of the transfer layer can reduce the vibration of the superstructure. The maximum Z-vibration level decreases by 3.1 dB on average, After the superstructure roof vibration has been reduced, the maximum Z-level average reduction of 1.95dB.