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陈福全, 汪金卫, 李大勇, 乔卫国. 高频液压振动锤打桩的应用概况与研究进展[J]. 岩土工程学报, 2011, 33(sup2): 224-231.
引用本文: 陈福全, 汪金卫, 李大勇, 乔卫国. 高频液压振动锤打桩的应用概况与研究进展[J]. 岩土工程学报, 2011, 33(sup2): 224-231.
CHEN Fu-quan, WANG Jin-wei, LI Da-yong, QIAO Wei-guo. Application and advance of vibratory driving techniques using high-frequency hydraulic vibratory hammer[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 224-231.
Citation: CHEN Fu-quan, WANG Jin-wei, LI Da-yong, QIAO Wei-guo. Application and advance of vibratory driving techniques using high-frequency hydraulic vibratory hammer[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 224-231.

高频液压振动锤打桩的应用概况与研究进展

Application and advance of vibratory driving techniques using high-frequency hydraulic vibratory hammer

  • 摘要: 高频液压振动锤有很多技术优势,可应用于沉桩和拔桩。但当前还是缺乏规范性的指导方法来解决使用高频振动技术打桩可打入深度的确定问题和高频振动打入桩的承载力计算。分早期研究、试验研究和数值分析三个方面对高频振动打桩的研究概况进行了综述。分别从力学、运动学、能量守恒方程和运动规律积分方程等方面阐述了国外各种高频液压振动锤打桩的可打入性模型的相应原理、假设条件、判断方法。指出了若干有待进一步研究的几个问题,包括在高频振动打桩下桩周土的强度变化、可打入性及打入桩的承载力等等。

     

    Abstract: Vibratory driving techniques have become increasingly popular all over the world primarily for driving and extracting piles. High-frequency vibratory hammer with hydraulic clamping device has many advantages. However, its foremost questions are driveability and the bearing capacity calculation of the installed pile. At present limitations in engineering knowledge related to the vibratory driving technique present an impediment for being able to utilize their full potential. A brief history of the vibratory techniques, the functioning of modern vibratory equipments and various components, mechanical action and the most important vibratory parameters are presented. A detailed literature review is given, that is, forepart research, vibro-driveability tests and numerical analysis. And then a series of models of vibratory driveability are depicted including their corresponding theories, assumptions, justifying methods and noticeable questions, which are classified in the terms of mechanics, kinematics, energy conservation and integration of motion law respectively. Finally some aspects are put forward which should be studied to enlarge the engineering knowledge and to utilize the full potential of the techniques.

     

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