A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of nail-shaped cement soil bidirectional mixing pile construction, and particularly discloses a nail-shaped cement soil bidirectional mixing pile construction technology. The technology comprises the following steps of carrying out stirring machine in-position operation, enabling a stirring machine to arrive at a designated pile position, carrying out centering, and carrying out guniting sinking; starting the stirring machine, enabling the stirring machine to cut soil downwards along a guide frame, meanwhile, starting a slurry feeding pump to spraycement slurry to soil, enabling two sets of blades to positively and reversely rotate at the same time (enabling an outer drill rod to rotate anticlockwise and an inner drill rod to rotate clockwise)to cut stirred soil, enabling the stirring machine to continuously sink until the expanding head design depth is achieved, changing rotating directions of the inner drill rod and the outer drill rod,and shrinking the stirring blades to the diameter of a lower pile body; and through the press grouting effect in the reverse rotating process of the blades on the outer drill rod and the effect of simultaneous bidirectional stirring of the cement soil by the positive and negative rotation blades, blocking rising of the cement slurry, controlling the cement slurry between the two sets of blades, and ensuring that the cement slurry is evenly distributed and evenly stirred in the pile body and the pile forming quality is ensured.
本发明属于钉形水泥土双向搅拌桩施工技术领域，尤其为钉形水泥土双向搅拌桩施工工艺，包括如下步骤：搅拌机就位，搅拌机到指定桩位并对中，喷浆下沉：启动搅拌机，使搅拌机沿导向架向下切土，同时开启送浆泵向土体喷水泥浆，两组叶片同时正、反向旋转(外钻杆逆时针旋转，内钻杆顺时针旋转)切割搅拌土体，搅拌机持续下沉，直到扩大头设计深度，改变内、外钻杆的旋转方向，将搅拌叶片收缩到下部桩体直径；通过外杆上叶片反向旋转过程中的压浆作用和正反向旋转叶片同时双向搅拌水泥土的作用，阻断水泥浆上冒，把水泥浆控制在两组叶片之间，保证水泥浆在桩体中均匀分布和搅拌均匀，确保成桩质量。
The invention belongs to the technical field of nail-shaped cement soil bidirectional mixing pile construction, and particularly discloses a nail-shaped cement soil bidirectional mixing pile construction technology. The technology comprises the following steps of carrying out stirring machine in-position operation, enabling a stirring machine to arrive at a designated pile position, carrying out centering, and carrying out guniting sinking; starting the stirring machine, enabling the stirring machine to cut soil downwards along a guide frame, meanwhile, starting a slurry feeding pump to spraycement slurry to soil, enabling two sets of blades to positively and reversely rotate at the same time (enabling an outer drill rod to rotate anticlockwise and an inner drill rod to rotate clockwise)to cut stirred soil, enabling the stirring machine to continuously sink until the expanding head design depth is achieved, changing rotating directions of the inner drill rod and the outer drill rod,and shrinking the stirring blades to the diameter of a lower pile body; and through the press grouting effect in the reverse rotating process of the blades on the outer drill rod and the effect of simultaneous bidirectional stirring of the cement soil by the positive and negative rotation blades, blocking rising of the cement slurry, controlling the cement slurry between the two sets of blades, and ensuring that the cement slurry is evenly distributed and evenly stirred in the pile body and the pile forming quality is ensured.
本发明属于钉形水泥土双向搅拌桩施工技术领域，尤其为钉形水泥土双向搅拌桩施工工艺，包括如下步骤：搅拌机就位，搅拌机到指定桩位并对中，喷浆下沉：启动搅拌机，使搅拌机沿导向架向下切土，同时开启送浆泵向土体喷水泥浆，两组叶片同时正、反向旋转(外钻杆逆时针旋转，内钻杆顺时针旋转)切割搅拌土体，搅拌机持续下沉，直到扩大头设计深度，改变内、外钻杆的旋转方向，将搅拌叶片收缩到下部桩体直径；通过外杆上叶片反向旋转过程中的压浆作用和正反向旋转叶片同时双向搅拌水泥土的作用，阻断水泥浆上冒，把水泥浆控制在两组叶片之间，保证水泥浆在桩体中均匀分布和搅拌均匀，确保成桩质量。
Nail-shaped cement soil bidirectional mixing pile construction technology
钉形水泥土双向搅拌桩施工工艺
2020-08-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Cement-soil mixing pile construction system and method and cement-soil mixing pile
| European Patent Office | 2023
Pneumatic type bidirectional cement-soil mixing pile forming device
| European Patent Office | 2023
Bidirectional cement mixing pile composite soil consolidation foundation device
| European Patent Office | 2023