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A platform for research: civil engineering, architecture and urbanism
Extrusion drilling tool, extruding pile machine and extruding and expanding pile construction method
The invention discloses an extrusion drilling tool, an extruding pile machine and an extruding and expanding pile construction method. The extrusion drilling tool comprises a drill bit, a squeezing and expanding body, a connecting rod, and a pin shaft. The extrusion drilling tool in characterized in that the squeezing and expanding body is composed of a cylindrical holding body and a special-shaped squeezing and expanding body, the special-shaped squeezing and expanding body comprises a core tube, a blade and an Archimedes spiral surface; the upper end of the core tube is fixedly connected with the lower end of the connecting rod through an extruded upper joint and a pin, the lower end of the core tube is fixedly connected with the drill bit; the upper part of the core tube is connected inseries with the cylindrical holding body, and the lower part is spirally wound with equal pitch blades along the axis. The extruding pile machine comprises an extruding and expanding drilling tool. The pile construction method comprises the steps that in the process of synchronous drilling, by using the gradually increasing Archimedes spiral surface is squeezed and expanded in-situ, so that the soil is not sheared and not transported upward. The method has the advantages of high construction efficiency, low power consumption, good soil squeezing effect, higher quality of piles, no stuck drilland no buried drill, and long service life.
本发明公开了一种挤扩钻具、挤扩桩机及挤扩桩成桩工法，包括钻头、挤扩体、连接杆、销轴，其特征在于所述挤扩体是由圆柱保持体、异形螺纹挤扩体构成，所述异形螺纹挤扩体包括芯管、叶片和阿基米德螺旋面，所述芯管上端经设有的挤扩上接头和销轴与连接杆下端固定连接，下端与钻头固定连接，所述芯管上部串接有圆柱保持体，下部沿轴线向上螺旋缠绕有等螺距叶片；一种挤扩桩机，包括所述挤扩钻具，一种成桩工法，挤扩桩机在同步钻进过程中，利用逐渐增大的阿基米德螺旋面的成桩工法在原位挤扩，使得土体不剪切，不向上输送，本发明具有施工效率高、动力消耗少、挤土效果好、成桩质量更高、不卡钻、埋钻、使用寿命长等优点。
Extrusion drilling tool, extruding pile machine and extruding and expanding pile construction method
The invention discloses an extrusion drilling tool, an extruding pile machine and an extruding and expanding pile construction method. The extrusion drilling tool comprises a drill bit, a squeezing and expanding body, a connecting rod, and a pin shaft. The extrusion drilling tool in characterized in that the squeezing and expanding body is composed of a cylindrical holding body and a special-shaped squeezing and expanding body, the special-shaped squeezing and expanding body comprises a core tube, a blade and an Archimedes spiral surface; the upper end of the core tube is fixedly connected with the lower end of the connecting rod through an extruded upper joint and a pin, the lower end of the core tube is fixedly connected with the drill bit; the upper part of the core tube is connected inseries with the cylindrical holding body, and the lower part is spirally wound with equal pitch blades along the axis. The extruding pile machine comprises an extruding and expanding drilling tool. The pile construction method comprises the steps that in the process of synchronous drilling, by using the gradually increasing Archimedes spiral surface is squeezed and expanded in-situ, so that the soil is not sheared and not transported upward. The method has the advantages of high construction efficiency, low power consumption, good soil squeezing effect, higher quality of piles, no stuck drilland no buried drill, and long service life.
本发明公开了一种挤扩钻具、挤扩桩机及挤扩桩成桩工法，包括钻头、挤扩体、连接杆、销轴，其特征在于所述挤扩体是由圆柱保持体、异形螺纹挤扩体构成，所述异形螺纹挤扩体包括芯管、叶片和阿基米德螺旋面，所述芯管上端经设有的挤扩上接头和销轴与连接杆下端固定连接，下端与钻头固定连接，所述芯管上部串接有圆柱保持体，下部沿轴线向上螺旋缠绕有等螺距叶片；一种挤扩桩机，包括所述挤扩钻具，一种成桩工法，挤扩桩机在同步钻进过程中，利用逐渐增大的阿基米德螺旋面的成桩工法在原位挤扩，使得土体不剪切，不向上输送，本发明具有施工效率高、动力消耗少、挤土效果好、成桩质量更高、不卡钻、埋钻、使用寿命长等优点。
Extrusion drilling tool, extruding pile machine and extruding and expanding pile construction method
挤扩钻具、挤扩桩机及挤扩桩成桩工法
CAO SHAODONG (author) / YU ZHENGLI (author) / YU JIANCHI (author)
2020-11-13
Patent
Electronic Resource
Chinese
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