Method for welding side wing type steel pipe pile strengthening foundation
A technology of steel pipe piles and flanks, which is applied in sheet pile walls, soil protection, foundation structure engineering, etc., can solve problems such as long pile lengths, achieve the effects of reduced construction costs, increased side friction resistance, and easy quality assurance
Inactive Publication Date: 2017-06-20
MCC TIANGONG GROUP
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Problems solved by technology
[0007] The purpose of the present invention is to provide a method for reinforcing the foundation with welded flank-type steel pipe piles, which solves the problem of excessive length of the pile body caused by the complex stratum structure in the reinforcement of existing building foundations, and has the advantages of simple device fabrication, pile sinking Features of high efficiency, low construction cost and easy guarantee of quality
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[0024] A method for reinforcing foundations by welding flank type steel pipe piles, comprising the following steps:
[0025] ① Carry out pile sinking according to ordinary steel pipe pile sinking method, conventional steel pipe pile includes steel pad 3, hydraulic jack 4, ordinary steel pipe pile body 5 and steel pipe pile head 6; (eg figure 1 shown)
[0026] ②When the length of the ordinary steel pipe pile body reaches two-thirds of the design pile length, use the flank-type steel pipe pile 9 to press the pile until the hydraulic jack 4 shows that the pressure reaches the design pressure; the flank-type steel pipe pile A plurality of steel plate flanks 8 are welded on the outer wall of the body, and these steel plate flanks are arranged in a quincunx shape and welded on the outer wall of the flank type steel pipe pile body. (Such as figure 2 , 3 , 4, 5)
[0027] ③ When the pressure reaches the design pressure, weld the last section of pipe pile (the last section of pipe ...
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The invention relates to a method for welding side wing type steel pipe pile strengthening foundation. The method includes the following steps that (1) pile sinking is carried out according to a common steel pipe pile sinking method; (2) when the length of a pile body of a common steel pipe pile reaches two third of the design pile length, a side wing type steel pipe pile is adopted for conducting pile pressing until a hydraulic jack displays that the pressure reaches the design pressure, wherein a plurality of steel plate side wings are welded to the outer wall of a pile body of the side wing type steel pipe pile; and (3) after the pressure reaches the design pressure, a last pipe pile section is welded, a steel plate wedge is driven in to be subject to electric welding so that the foundation can be tightly ejected, and finally concrete is poured into a steel pipe. According to the method, in existing building foundation strengthening, the problem of the too long pile body caused by the complex stratum structure is solved, and the method has the beneficial effects that device manufacturing is simple, the pile sinking efficiency is high, the construction cost is reduced, and the quality is easily guaranteed.
Description
[0001] Technical field: [0002] The invention belongs to the technical field of civil engineering, and relates to a method for reinforcing foundations by welding flank type steel pipe piles. [0003] Background technique: [0004] There are many reinforcement methods for existing building foundations and foundation sinking. The most common one is concrete-filled steel pipe static pressure piles, which use the self-weight of the building as the counter force, and use jacks to press the pile sections from the bottom of the foundation into the bearing layer to reach the design pressure and depth, and then connect the pile with the foundation to form a pile. The pile body and the foundation soil work together to share the load of the upper structure, make up for the lack of bearing capacity of the original natural foundation, and control the settlement of the foundation. The pile steel pipe is pressed into the foundation in sections (each meter is a section), and the steel pipe is...
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Login to View More IPC IPC(8): E02D3/08E02D5/38
CPCE02D3/08E02D5/38
Inventor 杨旭王荻常慧
Owner MCC TIANGONG GROUP