Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pile-forming method of sectioned steel cement-soil mixing wall in pebble layer
The invention relates to the technical field of foundation pit supporting, in particular to a pile-forming method of a sectioned steel cement-soil mixing wall in a pebble layer. The pile-forming method of the sectioned steel cement-soil mixing wall in the pebble layer comprises the following steps that surveying and setting out are carried out to position the pile position; a section steel cement-soil mixing pile machine is centered according to the pile position; cement slurry is prepared; a mixing pile drill of the section steel cement-soil mixing pile machine moves downward and drills through a soil layer; the mixing pile drill is provided with a double-layer rake-shaped drill bit which can force to squeeze pebbles with a diameter of greater than 50mm out of a mixing pile body; the mixing pile drill sinks down while spraying; when the mixing pile drill is rotated into the predetermined low position, the mixing pile drill is lifted while spraying and mixing are carried out; when themixing pile drill is lifted to a predetermined high position, the mixing pile drill sinks down, and the spraying is stopped; section steel is lifted and centered; the section steel is inserted into the center of the pile; and the pile is formed. According to the pile-forming method of the sectioned steel cement-soil mixing wall in the pebble layer, the double-layer rake-shaped drill bit is adopted, when the drill bit sinks down, the pebbles with larger particles can be squeezed out of the mixing pile body to prevent the pebbles from being formed in the pile, the insertion of section steel intothe center of the pile is facilitated, and the pile is formed.
本发明涉及一种基坑支护技术领域，具体涉及一种型钢水泥土搅拌墙在卵石层中的成桩方法。其包括以下步骤：测量放线定出桩位；型钢水泥土搅拌桩机根据桩位对中；制备水泥浆；型钢水泥土搅拌桩机的搅拌桩钻向下移动并钻穿土层；搅拌桩钻设有可将直径大于50mm的卵石强行挤压出搅拌桩桩体外的双层耙形钻头；搅拌桩钻在下沉同时喷浆；当搅拌桩钻旋入预定低位置时，搅拌桩钻提升并同时喷浆搅拌；当搅拌桩钻提升至预定高位置时，搅拌桩钻向下沉，并停止喷浆；起吊型钢对中；型钢插入桩中心；成桩。本发明采用双层耙形钻头，在钻头下沉时，能够将颗粒较大的卵石挤出搅拌桩桩体外，避免卵石成型于桩内，从而有利于将型钢插入桩中心并成桩。
Pile-forming method of sectioned steel cement-soil mixing wall in pebble layer
The invention relates to the technical field of foundation pit supporting, in particular to a pile-forming method of a sectioned steel cement-soil mixing wall in a pebble layer. The pile-forming method of the sectioned steel cement-soil mixing wall in the pebble layer comprises the following steps that surveying and setting out are carried out to position the pile position; a section steel cement-soil mixing pile machine is centered according to the pile position; cement slurry is prepared; a mixing pile drill of the section steel cement-soil mixing pile machine moves downward and drills through a soil layer; the mixing pile drill is provided with a double-layer rake-shaped drill bit which can force to squeeze pebbles with a diameter of greater than 50mm out of a mixing pile body; the mixing pile drill sinks down while spraying; when the mixing pile drill is rotated into the predetermined low position, the mixing pile drill is lifted while spraying and mixing are carried out; when themixing pile drill is lifted to a predetermined high position, the mixing pile drill sinks down, and the spraying is stopped; section steel is lifted and centered; the section steel is inserted into the center of the pile; and the pile is formed. According to the pile-forming method of the sectioned steel cement-soil mixing wall in the pebble layer, the double-layer rake-shaped drill bit is adopted, when the drill bit sinks down, the pebbles with larger particles can be squeezed out of the mixing pile body to prevent the pebbles from being formed in the pile, the insertion of section steel intothe center of the pile is facilitated, and the pile is formed.
本发明涉及一种基坑支护技术领域，具体涉及一种型钢水泥土搅拌墙在卵石层中的成桩方法。其包括以下步骤：测量放线定出桩位；型钢水泥土搅拌桩机根据桩位对中；制备水泥浆；型钢水泥土搅拌桩机的搅拌桩钻向下移动并钻穿土层；搅拌桩钻设有可将直径大于50mm的卵石强行挤压出搅拌桩桩体外的双层耙形钻头；搅拌桩钻在下沉同时喷浆；当搅拌桩钻旋入预定低位置时，搅拌桩钻提升并同时喷浆搅拌；当搅拌桩钻提升至预定高位置时，搅拌桩钻向下沉，并停止喷浆；起吊型钢对中；型钢插入桩中心；成桩。本发明采用双层耙形钻头，在钻头下沉时，能够将颗粒较大的卵石挤出搅拌桩桩体外，避免卵石成型于桩内，从而有利于将型钢插入桩中心并成桩。
Pile-forming method of sectioned steel cement-soil mixing wall in pebble layer
一种型钢水泥土搅拌墙在卵石层中的成桩方法
WANG JINLONG (Autor:in) / WU YU (Autor:in)
28.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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