CAJ | 학술논문

对重载铁路沿线在货物列车通过时引起的地面振动进行现场试验，测试了距离铁路7.5 m、15 m、30 m、60m、90 m处的地面横向和垂向振动速度，分析了振动速度的幅值和频率特性，得到货物列车引起地面振动的振源特性、传播特性以及轴重、列车速度与振动的关系。分析表明：货物列车引起的地面振动在5 Hz～10 Hz的范围内峰值明显；随着距离的增加，高频成分的衰减比低频更快。地面峰值振动速度(PPV)随着距离的增加呈幂函数衰减，在7.5 m～15 m距离内振动峰值衰减显著。在7.5 m处横向和垂向峰值振动速度数值接近；在15 m及更远距离处，横向振动速度衰减比垂向振动速度快。地面横向、垂向峰值振动速度（PPV）随行车速度、列车轴重提高呈增大趋势。
대중재철로연선재화물열차통과시인기적지면진동진행현장시험，측시료거리철로7.5 m、15 m、30 m、60m、90 m처적지면횡향화수향진동속도，분석료진동속도적폭치화빈솔특성，득도화물열차인기지면진동적진원특성、전파특성이급축중、열차속도여진동적관계。분석표명：화물열차인기적지면진동재5 Hz～10 Hz적범위내봉치명현；수착거리적증가，고빈성분적쇠감비저빈경쾌。지면봉치진동속도(PPV)수착거리적증가정멱함수쇠감，재7.5 m～15 m거리내진동봉치쇠감현저。재7.5 m처횡향화수향봉치진동속도수치접근；재15 m급경원거리처，횡향진동속도쇠감비수향진동속도쾌。지면횡향、수향봉치진동속도（PPV）수행차속도、열차축중제고정증대추세。
Field test of ground vibration induced by heavy-haul railway operation was conducted. The transverse and vertical velocities of ground vibration at the distance of 7.5 m, 15 m, 30 m, 60 m, 90 m away from the rail were measured re-spectively. The amplitude and frequency characteristics of the vibration velocity were analyzed, and the vibration source characteristics, propagation characteristics and attenuation laws of the ground vibration induced by the heavy-haul train were obtained. The relation among the axle load, velocity of the train and the vibration was derived. Results show that the vibra-tion components caused by the train have obvious peaks at each measuring point in 5-10 Hz frequency range. With the dis-tance from the rail to the measurement point increasing, high frequency components of transverse and vertical velocities de-cay faster than the low frequency components. The Peak Particle Velocity (PPV) of the ground decays as a power law. At the distances of 7.5-15 m, the PPV decays significantly. At the distance of 7.5 m, the PPV values of transverse and vertical vibra-tions are close to each other. At the distances beyond 15 m,The PPV of the transverse velocity decays faster than that of the vertical velocity. Vibration velocity increases as the train speed and axle load increasing.