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A platform for research: civil engineering, architecture and urbanism
Bridge hard rock rotary excavating pile construction method
The embodiment of the invention provides a bridge hard rock rotary excavating pile construction method. The bridge hard rock rotary excavating pile construction method comprises the steps that pile position lofting is conducted; a plurality of preformed holes are drilled by using a water well drilling machine to form an overhead surface; a pile casing is embedded; a rotary drilling rig is used tocut or grind the rock mass based on the overhead surface; the rotary drilling rig lifts the drill to enable rock debris to be discharged out of the hole; the steps of using a rotary drilling rig to cut or grind the rock mass based on the overhead surface and lifting the rotary drilling rig are executed repeatedly to discharge rock debris out of the hole until a final hole is formed; a reinforcement cage is installed in the final hole; and concrete is poured. By means of the construction method, the drilling difficulty is greatly reduced, and abrasion of hard rock to a drill bit of the rotary drilling rig can be effectively reduced. Meanwhile, the hole forming speed of the construction method is high, and the construction efficiency is extremely high. In addition, the construction method further has the advantages of being easy to operate and wide in adaptability.
本发明实施例提供了一种桥梁硬质岩旋挖桩施工方法，包括：进行桩位放样；使用水井钻机钻取多个预成孔以形成凌空面；埋设护筒；基于所述凌空面使用旋挖钻机切削或磨碎岩体；旋挖钻机提钻以使岩屑排出至孔外；重复所述基于所述凌空面使用旋挖钻机切削或磨碎岩体和所述旋挖钻机提钻以使岩屑排出至孔外的步骤，直至形成终孔；在终孔内安装钢筋笼；灌注混凝土。该施工方法极大地减小了钻孔难度，还能够有效减小硬质岩对于旋挖钻机的钻头的磨损。同时，该施工方法的成孔速度是较快，施工工效极高。并且，该施工方法还具有操作简单和适应性广的优势。
Bridge hard rock rotary excavating pile construction method
The embodiment of the invention provides a bridge hard rock rotary excavating pile construction method. The bridge hard rock rotary excavating pile construction method comprises the steps that pile position lofting is conducted; a plurality of preformed holes are drilled by using a water well drilling machine to form an overhead surface; a pile casing is embedded; a rotary drilling rig is used tocut or grind the rock mass based on the overhead surface; the rotary drilling rig lifts the drill to enable rock debris to be discharged out of the hole; the steps of using a rotary drilling rig to cut or grind the rock mass based on the overhead surface and lifting the rotary drilling rig are executed repeatedly to discharge rock debris out of the hole until a final hole is formed; a reinforcement cage is installed in the final hole; and concrete is poured. By means of the construction method, the drilling difficulty is greatly reduced, and abrasion of hard rock to a drill bit of the rotary drilling rig can be effectively reduced. Meanwhile, the hole forming speed of the construction method is high, and the construction efficiency is extremely high. In addition, the construction method further has the advantages of being easy to operate and wide in adaptability.
本发明实施例提供了一种桥梁硬质岩旋挖桩施工方法，包括：进行桩位放样；使用水井钻机钻取多个预成孔以形成凌空面；埋设护筒；基于所述凌空面使用旋挖钻机切削或磨碎岩体；旋挖钻机提钻以使岩屑排出至孔外；重复所述基于所述凌空面使用旋挖钻机切削或磨碎岩体和所述旋挖钻机提钻以使岩屑排出至孔外的步骤，直至形成终孔；在终孔内安装钢筋笼；灌注混凝土。该施工方法极大地减小了钻孔难度，还能够有效减小硬质岩对于旋挖钻机的钻头的磨损。同时，该施工方法的成孔速度是较快，施工工效极高。并且，该施工方法还具有操作简单和适应性广的优势。
Bridge hard rock rotary excavating pile construction method
桥梁硬质岩旋挖桩施工方法
2021-03-16
Patent
Electronic Resource
Chinese
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