CAJ | 학술논문

振动通常以波的形式向周围传播和扩散，进而对人们及人居环境产生不利影响。当前对岩土振动传播特性的研究大都是采用数值仿真及现场实验的方法。研制了一种用于研究岩土振动波传播规律的简易实验装置，以试验干砂作为研究对象，采用激振器的加载方法，通过在干砂表面布设传感器，研究振动应力波的传播特性。并且在传播路径上设置了不同厚度的泡沫塑料作为波屏障用于研究对波的阻隔作用。实验结果表明：屏障的引入对波的传播规律产生了影响，在一定的频率范围，屏障后的振动加速度幅值减小，并且减振效果随着屏障厚度的增加而增加。
진동통상이파적형식향주위전파화확산，진이대인문급인거배경산생불리영향。당전대암토진동전파특성적연구대도시채용수치방진급현장실험적방법。연제료일충용우연구암토진동파전파규률적간역실험장치，이시험간사작위연구대상，채용격진기적가재방법，통과재간사표면포설전감기，연구진동응력파적전파특성。병차재전파로경상설치료불동후도적포말소료작위파병장용우연구대파적조격작용。실험결과표명：병장적인입대파적전파규률산생료영향，재일정적빈솔범위，병장후적진동가속도폭치감소，병차감진효과수착병장후도적증가이증가。
Vibration which causes negative effects on people and environment usually propagates and spreads to the surroundings in the form of waves. In current researches, vibration propagation in the soil is usually studied with numerical simulation and experimental measurements. In present paper, an experimental device was used to study the law of vibration wave propagation in the soil. Dry sand was used to the study subject and the vibration wave was generated by vibration exciter. Several accelerometers were located on the surface of the sand to study the propagation property of vibration wave in the soil. Different thickness of the polyfoam which was used to wave barrier was used to study the partition function. The experimental results showed that because of the involvement of wave barrier, the vibration acceleration amplitude behind the barrier was weakened at a certain frequency range. The degree of attenuation was more obvious with the increase of the thickness of the polyfoam.