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黄土区高墩路基车辆行驶引起环境振动影响研究

Study on the influence of environmental vibration caused by roadbed vehicles with high piers in loess area
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摘要 以黄土区高墩路基为研究对象,采用地脉动仪TROMINO对车辆行驶引起的地面振动情况进行现场测量,获得了无车辆行驶、车辆以不同速度通过时距振源不同距离测点处的时域和频域信号,研究分析了车辆行驶速度、距激振源距离等因素对地面振动的影响规律。现场测试结果表明:车辆在道路上行驶经过时地面产生的振动以竖向振动为主,行车速度越大,振源距离越小,地面产生的振动越大;车辆行驶时地面产生的水平向振动向远处传播时高频部分衰减快,低频部分衰减慢,而竖向振动衰减不明显;车辆在道路上正常行驶时产生振动的主频率在10 Hz附近,振动满足人体舒适性要求。现场测试结果可为黄土区高墩路基由车辆行驶引起的振动影响提供一定依据。 Taking the high pier subgrade in loess area as the research object,the ground pulsation instrument TROMINO was used to measure ground vibration caused by vehicle traffic situations on site measurement.Numerous vehicles in different vehicle speed through different monitoring distance from the source in time domain and frequency domain signal was studied.The research also analyzes the vehicle speed and vibration source distance on the influence law of ground vibration.The field test results show that when the vehicles on the road through the ground produces vibration is given priority to with vertical vibration,the driving speed,the greater the vibration source distance is smaller,the greater the ground vibrations.When the horizontal vibration produced by the ground propagates to a distance,the high frequency part attenuates fast,the low frequency part attenuates slowly,while the vertical vibration attenuation is not obvious.The main frequency of vibration generated by the vehicle during normal driving on the road is around 10 Hz,and the vibration meets the requirements of human comfort.The field test results can provide certain basis for the influence of vibration caused by vehicle driving on the high-pier subgrade in loess area.
作者 李建伟 汪潇潇 黄德富 张程伟 王双现 Li Jianwei;Wang Xiaoxiao;Huang Defu;Zhang Chengwei;Wang Shuangxian(China Construction Sixth Engineering Bureau Co.,Ltd.,Tianjin 300450,China;School of Water Conservancy Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;Sanmenxia National Highway 310 South Moving Project Construction Management Co.,Ltd.,Sanmenxia 472000,China)
出处 《山西建筑》 2021年第18期121-123,170,共4页 Shanxi Architecture
关键词 黄土区高墩路基 振动 速度 频率 high pier subgrade in loess area vibration speed frequency
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