A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of free-angle high-bearing composite expanded pile
The invention provides a free-angle high-bearing composite expanded pile construction method, and relates to the technical field of foundation pit inclined strut construction, and the free-angle high-bearing composite expanded pile construction method comprises the following steps: S1, machining a rigid pile, a rigid expanded head and a shear-resistant stud; s2, preparation work before drilling tool construction; s3, drilling tool construction; s4, a high-bearing-rigidity expanded-head steel pile is installed; a special construction drilling tool is adopted in the step S3 to complete drilling, the special construction drilling tool is composed of a free angle rotating device, a hydraulic bidirectional power head, a single-double multiple rotary jet flow divider, a high-pressure multiple drill rod and a spiral stirring alloy drill bit which are sequentially assembled, and stirring blades distributed spirally are arranged on the surface of the high-pressure multiple drill rod; by means of the free angle rotating device, 0-360-degree construction of the high-bearing-capacity composite expanded pile is achieved, the rigid expanded head is made into different shapes, the requirements for different stratums and different bearing capacity and pulling resistance can be met, the defects of an existing foundation pit inclined strut supporting mode are overcome, and the stability of a foundation pit inclined strut is improved.
本发明提供一种自由角度高承载复合扩体桩施工方法，涉及基坑斜撑施工技术领域，包括以下步骤：S1、刚性桩、刚性扩大头以及抗剪栓钉加工；S2、钻具施工前准备工作；S3、钻具施工；S4、安装高承载刚性扩大头刚桩；S5、浇筑填芯砼，其中步骤S3采用专用施工钻具钻进完成，专用施工钻具由依次组装的自由角度旋转装置、液压双向动力头、单双多重旋喷分流器、高压多重钻杆和螺旋式搅拌合金钻头组成，高压多重钻杆表面设置有螺旋分布的搅拌叶片；通过自由角度旋转装置，实现高承载复合扩体桩的0‑360度施工，将刚性扩大头制成不同的形状，能够适应不同地层以及不同承载力和抗拔力的要求，解决了现有基坑斜撑支护形式的不足，增加了基坑斜撑的稳定性。
Construction method of free-angle high-bearing composite expanded pile
The invention provides a free-angle high-bearing composite expanded pile construction method, and relates to the technical field of foundation pit inclined strut construction, and the free-angle high-bearing composite expanded pile construction method comprises the following steps: S1, machining a rigid pile, a rigid expanded head and a shear-resistant stud; s2, preparation work before drilling tool construction; s3, drilling tool construction; s4, a high-bearing-rigidity expanded-head steel pile is installed; a special construction drilling tool is adopted in the step S3 to complete drilling, the special construction drilling tool is composed of a free angle rotating device, a hydraulic bidirectional power head, a single-double multiple rotary jet flow divider, a high-pressure multiple drill rod and a spiral stirring alloy drill bit which are sequentially assembled, and stirring blades distributed spirally are arranged on the surface of the high-pressure multiple drill rod; by means of the free angle rotating device, 0-360-degree construction of the high-bearing-capacity composite expanded pile is achieved, the rigid expanded head is made into different shapes, the requirements for different stratums and different bearing capacity and pulling resistance can be met, the defects of an existing foundation pit inclined strut supporting mode are overcome, and the stability of a foundation pit inclined strut is improved.
本发明提供一种自由角度高承载复合扩体桩施工方法，涉及基坑斜撑施工技术领域，包括以下步骤：S1、刚性桩、刚性扩大头以及抗剪栓钉加工；S2、钻具施工前准备工作；S3、钻具施工；S4、安装高承载刚性扩大头刚桩；S5、浇筑填芯砼，其中步骤S3采用专用施工钻具钻进完成，专用施工钻具由依次组装的自由角度旋转装置、液压双向动力头、单双多重旋喷分流器、高压多重钻杆和螺旋式搅拌合金钻头组成，高压多重钻杆表面设置有螺旋分布的搅拌叶片；通过自由角度旋转装置，实现高承载复合扩体桩的0‑360度施工，将刚性扩大头制成不同的形状，能够适应不同地层以及不同承载力和抗拔力的要求，解决了现有基坑斜撑支护形式的不足，增加了基坑斜撑的稳定性。
Construction method of free-angle high-bearing composite expanded pile
一种自由角度高承载复合扩体桩施工方法
WEI PENG (author) / WU BINHUA (author) / YU JIANJIN (author) / GAO QIANG (author) / YUAN DONG (author) / SHEN SAI (author) / ZHANG JING (author) / LI XUFENG (author)
2023-08-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
COMPOSITE EXPANDED-PLATE PILE CONSTRUCTION METHOD AND EQUIPMENT
| European Patent Office | 2022
COMPOSITE EXPANDED-PLATE PILE CONSTRUCTION METHOD AND EQUIPMENT
| European Patent Office | 2021
Expanded-base composite pile and construction method thereof
| European Patent Office | 2020