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A platform for research: civil engineering, architecture and urbanism
Manufacturing method of cement-soil mixing and squeezing pile core press-grouting superfluid concrete pile
The invention discloses a cement-soil stirring soil-squeezing pile core press-grouting superfluid concrete pile which comprises the following specific steps that (1) downward clockwise rotary drilling is carried out, meanwhile, grouting is carried out, a spiral blade structure of a cement-soil stirring drill bit directly carries out cement-soil stirring drilling on a soil layer, the spiral blade structure is a main stirring soil-squeezing part, and a large-diameter drill rod on the upper part carries out auxiliary soil squeezing; (2) after the designed hole depth is reached, grouting continues to be conducted, and in-situ rotation is conducted for 1-2 minutes; (3) when upward clockwise rotation lifting is carried out, grouting continues to be carried out; (4) starting a concrete delivery pump to press and fill concrete into the pile core hole during upward rotation lifting; according to the method, a precipitation soil mixing pile is changed into a rigid pile, the bearing capacity of a single pile is high, less soil is discharged during construction, the construction environment is well protected, the applicable geological conditions are wide, cement soil on the side wall of a pile core is extruded compactly, and the side friction resistance of the pile core and the cement mixing pile is greatly increased.
本发明公开了水泥土搅拌挤土桩芯压灌超流态混凝土桩，包括以下具体步骤：1）向下顺时针旋转钻进，同时注浆，水泥土搅拌钻头螺旋叶片结构在土层直接进行水泥土搅拌钻孔，是主要搅拌挤土部分，上部分大径钻杆进行辅助挤土；2）在到达设计孔深后继续注浆并原位旋转1‑2分钟后；3）向上顺时旋转提升时，继续注浆；4）在上旋提升同时，启动混凝土输送泵向桩芯孔内压灌混凝土；5）钻具提出后用振捣器下入钢筋笼。本发明将降水泥土搅拌桩变为刚性桩，单桩承载力高；施工排土少，对施工环境保护好；适用地质条件广，对桩芯的侧壁水泥土土挤压密实，较大的增加桩芯及水泥土搅拌桩侧摩阻力。
Manufacturing method of cement-soil mixing and squeezing pile core press-grouting superfluid concrete pile
The invention discloses a cement-soil stirring soil-squeezing pile core press-grouting superfluid concrete pile which comprises the following specific steps that (1) downward clockwise rotary drilling is carried out, meanwhile, grouting is carried out, a spiral blade structure of a cement-soil stirring drill bit directly carries out cement-soil stirring drilling on a soil layer, the spiral blade structure is a main stirring soil-squeezing part, and a large-diameter drill rod on the upper part carries out auxiliary soil squeezing; (2) after the designed hole depth is reached, grouting continues to be conducted, and in-situ rotation is conducted for 1-2 minutes; (3) when upward clockwise rotation lifting is carried out, grouting continues to be carried out; (4) starting a concrete delivery pump to press and fill concrete into the pile core hole during upward rotation lifting; according to the method, a precipitation soil mixing pile is changed into a rigid pile, the bearing capacity of a single pile is high, less soil is discharged during construction, the construction environment is well protected, the applicable geological conditions are wide, cement soil on the side wall of a pile core is extruded compactly, and the side friction resistance of the pile core and the cement mixing pile is greatly increased.
本发明公开了水泥土搅拌挤土桩芯压灌超流态混凝土桩，包括以下具体步骤：1）向下顺时针旋转钻进，同时注浆，水泥土搅拌钻头螺旋叶片结构在土层直接进行水泥土搅拌钻孔，是主要搅拌挤土部分，上部分大径钻杆进行辅助挤土；2）在到达设计孔深后继续注浆并原位旋转1‑2分钟后；3）向上顺时旋转提升时，继续注浆；4）在上旋提升同时，启动混凝土输送泵向桩芯孔内压灌混凝土；5）钻具提出后用振捣器下入钢筋笼。本发明将降水泥土搅拌桩变为刚性桩，单桩承载力高；施工排土少，对施工环境保护好；适用地质条件广，对桩芯的侧壁水泥土土挤压密实，较大的增加桩芯及水泥土搅拌桩侧摩阻力。
Manufacturing method of cement-soil mixing and squeezing pile core press-grouting superfluid concrete pile
水泥土搅拌挤土桩芯压灌超流态混凝土桩的制作方法
YANG YANJUN (author)
2023-06-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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