振动沉桩锤的选型及应用

将桩下沉至要求深度的振动力和振幅,是选择振动锤型号的关键参数,但由于我国目前尚无同类的设计、施工规范,计算理论依据又不完备,所以在选择振动锤型号时,振动力和振幅的估算较难。在几个大型工程基础采用振动下沉工艺中,收集整理了国内外有关其计算的经验公式,验证了选择振动锤的步骤和相应的计算方法,结果证明选锤非常成功。

Selection and Application of Vibratory Piling Hammers

Vibrating force and amplitude of vibration to drive piles to the required depth are the key parameters for selection of vibratory piling hammers.However,there have been no similar design and construction criteria in China and the bases for design theories are not complete,hence,it is very difficult to calculate the vibrating force and amplitude of vibration of a vibrating piling hammer when selection is made.Some foreign and domestic empirical equations for these calculations were collected and re-arranged during the piling operations for building foundations in some large engineering projects to verify the procedures for selection of vibratory piling hammers and the relevant calculating methods.The results proved that the piling hammers have been successfully selected.