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振动是自然界常见的现象。一个弹性系统,受到扰动使它离开平衡位置,就将发生振动。在许多情况下,振动是有害的。它会影响机器设备的工作性能与使用寿命,产生噪声和动载荷,严重时可能造成事故。但是,在某些情况下,我们可以利用振动的原理,完成许多工作。建筑机械中振动技术的应用十分普遍。例如土壤的压实,桩的沉入和拔出,混凝_上的捣固和成型等。
Vibration is a common phenomenon in nature. A resilient system that is subject to disturbances to move it out of equilibrium will vibrate. In many cases, vibration is harmful. It will affect the working performance and service life of machinery and equipment, generate noise and dynamic load, and in serious cases may cause accidents. However, in some cases, we can use the principle of vibration to accomplish many tasks. The application of vibration technology in construction machinery is very common. Examples include compaction of soil, sinking and pulling out of piles, tamping and forming on coagulation.