【摘要】 由于地铁地下停车场本身的空腔结构,所以易受到地铁车辆进出库运行时所引发的地面振动的影响,因此其振动的规律不能简单的依靠常规的预测模型来计算和描述。本测试以国内某地下双层地铁停车场内车辆进出道岔段所产生的振动对地面及上盖物业的环境影响为研究对象。在时域,频域内分析其振动的大小及传播特征,并结合国内相关标准及传统的振动预测模型进行对比分析。结果显示:在模拟地铁地下停车场车辆进出库最不利条件下,道岔段断面各楼层地面振动均大于与之对应的直线段断面各楼层地面的振动。各楼层地面的主振频率较低,其值也均未超过国家相关标准限值。更多还原

【Abstract】 Due to the cavity structure of the subway parking lot,it is easily affected by the ground vibration caused by the subway vehicles entering and exiting the warehouse. Thus the law of vibration cannot simply be calculated and described by conventional prediction models. This study focused on the environmental impact of the vibration generated by the vehicle entering and leaving the turnout section in a double-deck underground subway parking lot on the ground and properties above,analyzed its vibration magnitude and transmission characteristics in the time domain and frequency domain,compared with relative domestic standards and traditional vibration prediction models. The results showed that under the most unfavorable conditions of the simulation,the ground vibration of each floor of the turnout section is greater than that of the ground floor of the corresponding straight section. The ground main vibration frequency of each floor is low,and its value is under the relevant national standard limit value.更多还原