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高频振动致密是一种地基处理的新技术。该法应用高频振动锤在振动探杆顶施加竖向激振力,在振动杆轴周围产生剪切波(S波)及压缩波(P波),在高频振动力的作用下,土体中的振动探杆由此上下反复振动,在S波和P波的作用下,最终逐步地提高其周围土体密实度。在详细介绍该法的加固机理、施工原理以及与振冲法区别的基础上,提出适用于该法处理的土质条件并采用颗粒离散元分析结果进行分析说明以及相应的设计和检测方法。最后指出了该技术有待于进一步研究的几个理论问题。
Dense vibration is a high-frequency ground treatment of new technologies. In this method, a high-frequency vibrating hammer is used to exert vertical excitation force on the top of the vibrating probe rod to generate shear wave (S wave) and compressional wave (P wave) around the vibrating rod axis. Under the action of high-frequency vibration force, The vibrating probe in the body thus repeatedly vibrates up and down, finally increasing the compactness of the surrounding soil gradually under the action of S wave and P wave. Based on the detailed introduction of the reinforcement mechanism, construction principle and the difference between vibration method and vibration method, this paper puts forward the soil conditions which are suitable for the method and analyzes and illustrates the design and testing methods by means of particle discrete element analysis. Finally, it points out several theoretical issues that this technology needs to be further studied.