Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micro pile hole-forming and pile-forming integrated drill bit device and method for soil layer
The invention provides a micro pile hole-forming and pile-forming integrated drill bit device and method for a soil layer. One end of a drill rod is connected with a water pump, and a water outlet hole is formed in the other end of the drill rod. The pressure of the water outlet hole drives a movable third blade to be opened and closed, hole forming and pile forming can be conducted at the same time, and a drill bit moves up and down in a micro pile steel pipe; and when the drill bit drills out the micro pile steel pipe, the third blade is opened to the preset hole diameter, a large-hole-diameter drill hole exceeding the diameter of the micro pile steel pipe is drilled, and descending of the micro pile steel pipe is met. According to the micro pile hole-forming and pile-forming integrated drill bit device and method, the phenomena of hole wall necking and hole wall collapse during hole forming and pile forming in sequence in the prior art can be avoided, the micro pile construction period can be effectively prolonged, and integrity and continuity during pile body forming are enhanced.
本发明提供一种用于土地层的微型桩成孔成桩一体化钻头装置及方法，钻杆一端连接水泵，另一端开设出水孔，出水孔的压力带动可活动的第三叶片的开合，能够实现成孔成桩同时进行，保证钻头在微型桩钢管内的上下行，又能在钻头钻出微型桩钢管时，第三叶片张开至预设的孔径大小，钻出超过微型桩钢管直径的大孔径钻孔，满足微型桩钢管的下放，本申请能够解决现有技术中先成孔后成桩时孔壁出现的缩颈和孔壁坍塌现象，可有效提高微型桩施工工期，增强桩体成型时的完整性和连续性。
Micro pile hole-forming and pile-forming integrated drill bit device and method for soil layer
The invention provides a micro pile hole-forming and pile-forming integrated drill bit device and method for a soil layer. One end of a drill rod is connected with a water pump, and a water outlet hole is formed in the other end of the drill rod. The pressure of the water outlet hole drives a movable third blade to be opened and closed, hole forming and pile forming can be conducted at the same time, and a drill bit moves up and down in a micro pile steel pipe; and when the drill bit drills out the micro pile steel pipe, the third blade is opened to the preset hole diameter, a large-hole-diameter drill hole exceeding the diameter of the micro pile steel pipe is drilled, and descending of the micro pile steel pipe is met. According to the micro pile hole-forming and pile-forming integrated drill bit device and method, the phenomena of hole wall necking and hole wall collapse during hole forming and pile forming in sequence in the prior art can be avoided, the micro pile construction period can be effectively prolonged, and integrity and continuity during pile body forming are enhanced.
本发明提供一种用于土地层的微型桩成孔成桩一体化钻头装置及方法，钻杆一端连接水泵，另一端开设出水孔，出水孔的压力带动可活动的第三叶片的开合，能够实现成孔成桩同时进行，保证钻头在微型桩钢管内的上下行，又能在钻头钻出微型桩钢管时，第三叶片张开至预设的孔径大小，钻出超过微型桩钢管直径的大孔径钻孔，满足微型桩钢管的下放，本申请能够解决现有技术中先成孔后成桩时孔壁出现的缩颈和孔壁坍塌现象，可有效提高微型桩施工工期，增强桩体成型时的完整性和连续性。
Micro pile hole-forming and pile-forming integrated drill bit device and method for soil layer
一种用于土地层的微型桩成孔成桩一体化钻头装置及方法
ZHANG CHANGLIANG (Autor:in) / LI TONGLU (Autor:in) / JIAO ZHENLI (Autor:in) / LI ZHAODONG (Autor:in) / TANG BIN (Autor:in) / SI JIAPENG (Autor:in)
11.01.2022
Patent
Elektronische Ressource
Chinesisch
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