液压打桩锤与筒式柴油锤比较，有多方面优势，应予以必要的重视。
Hydraulic pile hammers have a lot of advantages over the cylindrical diesel pile hammers and should be given necessary importance.
液压打桩锤冲击力和塔式起重机力矩实测研究证明该方法可行、可靠。
The experiments of the wallop of hydraulic shock device and the lifting moment of tower crane show that the mode is effective and reliable.
液压打桩锤是用于建筑、桥梁、码头等桩基础施工中打入预制桩的桩工机械。
Hydraulic pile hammer is one of the pile driving machines that drive prefabricated piles into the ground in the construction of pile foundation such as construction, bridge, dock, etc.
小型、超小型号的自动打桩锤可以打护坡桩、公路铁路护栏桩、还可以用其冲击破路和夯实各类基础。
Small , ultra-small models can play Piles of automatic hammer , highway , rail barrier pile , Impact also can be used to consolidate all types of roads and infrastructure .
与传统打桩锤相比较具有噪声小、无污染、振动小、打击能量高等优点，符合环保要求，并具有良好的动力学特性。
Compared with normal hammers, it has a lot of advantages, such as lower noise, no exhaust gas, less vibration, high piling energy and better dynamics characteristics.
本文应用冲击机械系统动力学分析打桩过程中锤体与桩撞击时应力波的产生、传播以及该波对沉桩过程的影响。
Mechanical impact dynamics is used to analyse the production and spread of stress wave when hydraulic pile hammer hammerblows piles, the stress wave influence the course of driving pile.
而且，在平台打桩工程建设中出现了诸如拒锤、溜桩等等的实际问题。
It is one of pile driving to predict more accurately driveability analysis.
结合一维应力波动理论，以实测打桩记录为依据，采用反分析方法确定当后继打桩出现拒锤现象时的单桩承载力。
Based on the driving records, the back-figured method is applied to estimate the pile bearing capacity after refusal taking place.
结合一维应力波动理论，以实测打桩记录为依据，采用反分析方法确定当后继打桩出现拒锤现象时的单桩承载力。
Based on the driving records, the back-figured method is applied to estimate the pile bearing capacity after refusal taking place.
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