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 .
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。
The experience of pile hole drilling using pneumatic hammer in bridge construction is reviewed. Equipments, tools and techniques are also described in detail.
文中回顾了在建桥工程中，应用风动潜孔锤钻进桥桩桩孔的经验，具体介绍了使用的设备、工具及施工工艺技术。
The basic principle of simple high strain pile test method transformed from measured free fall of drop hammer is given in this paper.
给出测量自由落锤的加速度换算高应变试桩的动力的简易法的基本原理、测试操作与工程应用。
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