DX桩技术的设备与工法概述
Introduction of equipment and engineering methods of DX pile technology
文章叙述了DX桩技术理论研究、设备工法及工程实践的发展过程，从DX桩挤扩设备的发明，到研制出钻扩清一体化机，直至今天又创新出HDX旋挖挤扩钻机，使DX桩技术取得了长足的进步和发展。
This paper introduced the developing process of DX pile technology in theory research, equipment and engineering methods and practices. From the invention of the DX extruding-expanding rig, the drilling-extruding-cleaning rig, to the rotary extruding-expanding rig, DX pile technology achieved great progress and development.
DX pile / extruding expanding / rotary extruding expanding / cutting rolling
贺德新（1955—），男，北京市人，高级工程师，长期从事桩基研究，DX桩技术发明人
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