Abstract
Hydraulic vibratory hammer using the working principle of vibratory pile sinking is an important equipment in pile foundation construction, which can be used for sinking and extracting piles. It has a wider range of application than the drop hammer for pile sinking by the impact method and the static hammer for pile sinking by the press-in method, which can significantly reduce the resistance of piles during sinking and extraction and improve the working efficiency. However, it is difficult to avoid the resonance phenomenon in the process of starting and stopping by using the principle of vibratory pile sinking, and the resonance phenomenon will cause a high concentration of stress in the vibratory pile hammer parts and reduce its service life. In this paper, the resonance-free technology of hydraulic vibratory hammer is studied in the hope of promoting the development of hydraulic vibratory hammer. On this basis, the technology of innovative hydraulic vibratory hammer without resonance is used to reduce its cost and promote commercialization.
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