Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prestressed bag type expansion anchor rod construction method
The invention relates to the technical field of anchor rod construction, in particular to a prestressed bag type expansion anchor rod construction method, which has the beneficial effects that when the device works, a high-pressure slurry pump is started to supply high-pressure cement slurry to a rotary jet grouting drilling machine for downward drilling and hole forming, downward drilling is stopped after drilling to a designed depth, but rotation of a drill rod and high-pressure water jetting are kept; the method comprises the following steps: firstly, drilling a concrete waterproof cushion layer, increasing the injection pressure to 25-30MPa, carrying out high-pressure injection reaming at the lifting speed of 10cm/min-20cm/min and the rotating speed of 10r/min-10r/min, then adopting a rotary injection drilling machine to be matched with a hoisting system, timely and quickly placing twisted steel which is assembled on site into an anchor hole, and after the concrete waterproof cushion layer is made, carrying out drilling and drilling on the anchor hole. The spiral reinforcing steel bar and the anchoring plate are fixed to the reinforcing steel bar, exposed outside, of the anchor rod, prestress is applied to the prestress bag type expansion anchor rod through a torque wrench, component production can be achieved according to the rod body length required by design before delivery, procedures such as anchor weaving, welding and cutting do not need to be carried out after entering a field, the construction period is shortened, and meanwhile environmental protection is achieved.
本发明涉及锚杆施工技术领域，具体为预应力囊式扩体锚杆施工方法，有益效果为：本装置工作时，启动高压泥浆泵为旋喷钻机供应高压水泥浆进行下钻成孔，当钻进至设计深度后停止向下钻进，但保持钻杆转动和高压水喷射，增大喷射压力至25‑30MPa，以10cm/min至20cm/min的提升速度及10r/min至10r/min的转速进行高压喷射扩孔，后采用旋喷钻机附配吊装系统，将现场已组装好的螺纹钢筋及时迅速地安放到锚孔中，待混凝土防水垫层做好之后，将螺旋钢筋和锚固板固定到锚杆出露在外部的钢筋上面，采用扭力扳手为预应力囊式扩体锚杆施加预应力，在出厂前即可按设计要求的杆体长度实现构件化生产，进场后无需再进行编锚、焊接、切割等工序，节省了工期，同时绿色环保。
Prestressed bag type expansion anchor rod construction method
The invention relates to the technical field of anchor rod construction, in particular to a prestressed bag type expansion anchor rod construction method, which has the beneficial effects that when the device works, a high-pressure slurry pump is started to supply high-pressure cement slurry to a rotary jet grouting drilling machine for downward drilling and hole forming, downward drilling is stopped after drilling to a designed depth, but rotation of a drill rod and high-pressure water jetting are kept; the method comprises the following steps: firstly, drilling a concrete waterproof cushion layer, increasing the injection pressure to 25-30MPa, carrying out high-pressure injection reaming at the lifting speed of 10cm/min-20cm/min and the rotating speed of 10r/min-10r/min, then adopting a rotary injection drilling machine to be matched with a hoisting system, timely and quickly placing twisted steel which is assembled on site into an anchor hole, and after the concrete waterproof cushion layer is made, carrying out drilling and drilling on the anchor hole. The spiral reinforcing steel bar and the anchoring plate are fixed to the reinforcing steel bar, exposed outside, of the anchor rod, prestress is applied to the prestress bag type expansion anchor rod through a torque wrench, component production can be achieved according to the rod body length required by design before delivery, procedures such as anchor weaving, welding and cutting do not need to be carried out after entering a field, the construction period is shortened, and meanwhile environmental protection is achieved.
本发明涉及锚杆施工技术领域，具体为预应力囊式扩体锚杆施工方法，有益效果为：本装置工作时，启动高压泥浆泵为旋喷钻机供应高压水泥浆进行下钻成孔，当钻进至设计深度后停止向下钻进，但保持钻杆转动和高压水喷射，增大喷射压力至25‑30MPa，以10cm/min至20cm/min的提升速度及10r/min至10r/min的转速进行高压喷射扩孔，后采用旋喷钻机附配吊装系统，将现场已组装好的螺纹钢筋及时迅速地安放到锚孔中，待混凝土防水垫层做好之后，将螺旋钢筋和锚固板固定到锚杆出露在外部的钢筋上面，采用扭力扳手为预应力囊式扩体锚杆施加预应力，在出厂前即可按设计要求的杆体长度实现构件化生产，进场后无需再进行编锚、焊接、切割等工序，节省了工期，同时绿色环保。
Prestressed bag type expansion anchor rod construction method
预应力囊式扩体锚杆施工方法
ZHANG JIABAO (Autor:in) / PEI ZUOFU (Autor:in) / ZHANG MINGJIAN (Autor:in) / YU YUEWU (Autor:in) / ZHANG ZEJI (Autor:in) / YIN HONG (Autor:in)
09.02.2024
Patent
Elektronische Ressource
Chinesisch
Prestressed anchor cable grouting construction method
| Europäisches Patentamt | 2024