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对地铁运行区域某新建多层混凝土建筑楼面、地面的振动加速度进行实测,并将实测结果与标准限值比较。分别从加速度有效值(均方根值)和加速度级等方面对地铁运行引起的楼面振动规律进行分析。分析结果表明:地铁列车运行引起的自由场地振动卓越频率出现在60~80Hz之间;多层建筑内以竖向振动为主;中心频率为80Hz的振动在部分楼层出现反弹;多层建筑的底层与顶层振动易对人们工作与生活产生影响。
The vibration acceleration of the floor and ground of a newly built multi-storey concrete building in the subway operation area is measured, and the measured results are compared with the standard limits. The vibration patterns of the floor caused by subway operation are analyzed respectively from the rms value (rms value) and acceleration level. The results show that the remarkable frequency of free-field vibration caused by the subway train operation appears in the range of 60-80Hz; the vertical vibration is the main factor in the multi-storey buildings; the vibration with the center frequency of 80Hz rebounds in some floors; the bottom of the multi-storey building Vibration with the top easily affect people’s work and life.