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Construction method for drilling, bundling, jetting and pressure-grouting concrete threaded pile
The invention discloses a construction method of a drilling, bundling, jetting and pressure-grouting concrete threaded pile, and belongs to the technical field of pile foundation engineering. According to the threaded pile capable of being achieved, non-soil-squeezing pile forming is achieved, the thickness and depth of the threads are adjustable, large concrete threads can bear the threads, pile forming under a complex stratum can be achieved, the pile bearing capacity is greatly improved, materials and the construction period are saved, and the manufacturing cost is greatly reduced. According to the invention, a drilling pressure grouting pile is combined with a high-pressure jet grouting process through a combined swivel joint, during construction of the drilling pressure grouting pile, a high-pressure jet grouting auxiliary system is utilized, a cluster nozzle mounted on a drill blade sprays cement paste, the cluster nozzle sprays cluster jet flow to cut a soil body and stir the soil body, the cluster nozzle is lifted along with rotation of a drill rod, and the cluster nozzle spirally ascends; a large-width spiral groove is cut in the outer side of a pile hole and is filled with cemented soil, large-slump concrete is poured into the hole in a pressing mode through a drill rod, the concrete is squeezed into the groove, and a large-thickness pile periphery concrete thread is formed.
一种钻孔集束喷射压灌混凝土螺纹桩的施工方法，属于桩基础工程技术领域。本发明能够实现的螺纹桩为：非挤土成桩、螺纹厚度和深度可调节、大混凝土螺纹可承载、可实现复杂地层下成桩，大幅提高桩承载能力，节省材料和工期，大幅降低造价。本发明是通过组合式回转接头将钻孔压灌桩与高压旋喷工艺相结合，钻孔压灌桩施工时，利用高压旋喷辅助系统，通过安装在钻叶上的集束喷嘴喷射水泥浆，集束喷嘴喷出集束射流切割土体并搅拌，随钻杆旋转上提集束喷嘴螺旋式上升，把桩孔外侧切割出较大宽度的螺旋沟槽并充满水泥土，通过钻杆向孔内压灌大塌落度混凝土，混凝土挤压入槽，形成较大厚度的桩周混凝土螺纹。
Construction method for drilling, bundling, jetting and pressure-grouting concrete threaded pile
The invention discloses a construction method of a drilling, bundling, jetting and pressure-grouting concrete threaded pile, and belongs to the technical field of pile foundation engineering. According to the threaded pile capable of being achieved, non-soil-squeezing pile forming is achieved, the thickness and depth of the threads are adjustable, large concrete threads can bear the threads, pile forming under a complex stratum can be achieved, the pile bearing capacity is greatly improved, materials and the construction period are saved, and the manufacturing cost is greatly reduced. According to the invention, a drilling pressure grouting pile is combined with a high-pressure jet grouting process through a combined swivel joint, during construction of the drilling pressure grouting pile, a high-pressure jet grouting auxiliary system is utilized, a cluster nozzle mounted on a drill blade sprays cement paste, the cluster nozzle sprays cluster jet flow to cut a soil body and stir the soil body, the cluster nozzle is lifted along with rotation of a drill rod, and the cluster nozzle spirally ascends; a large-width spiral groove is cut in the outer side of a pile hole and is filled with cemented soil, large-slump concrete is poured into the hole in a pressing mode through a drill rod, the concrete is squeezed into the groove, and a large-thickness pile periphery concrete thread is formed.
一种钻孔集束喷射压灌混凝土螺纹桩的施工方法，属于桩基础工程技术领域。本发明能够实现的螺纹桩为：非挤土成桩、螺纹厚度和深度可调节、大混凝土螺纹可承载、可实现复杂地层下成桩，大幅提高桩承载能力，节省材料和工期，大幅降低造价。本发明是通过组合式回转接头将钻孔压灌桩与高压旋喷工艺相结合，钻孔压灌桩施工时，利用高压旋喷辅助系统，通过安装在钻叶上的集束喷嘴喷射水泥浆，集束喷嘴喷出集束射流切割土体并搅拌，随钻杆旋转上提集束喷嘴螺旋式上升，把桩孔外侧切割出较大宽度的螺旋沟槽并充满水泥土，通过钻杆向孔内压灌大塌落度混凝土，混凝土挤压入槽，形成较大厚度的桩周混凝土螺纹。
Construction method for drilling, bundling, jetting and pressure-grouting concrete threaded pile
一种钻孔集束喷射压灌混凝土螺纹桩的施工方法
ZHAO LIANPING (author) / ZHAO WENZHUO (author) / ZHAI HONGYU (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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