Long spiral drilled press-grouting pile method
A technology of long auger drilling and grouting piles, which is applied in the direction of sheet pile walls, buildings, and foundation structure engineering, etc. It can solve the problems of high cost and easy pile breakage, and achieve low cost, avoid pile breakage, and simple method Effect
Inactive Publication Date: 2019-05-03
CHINA MCC20 GRP CORP
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Problems solved by technology
[0004] For this reason, the technical problem to be solved by the present invention is to overcome the problems of easy pile breakage and high cost in the prior art, so as to provide a long auger drilled pile pressure grouting method that is not easy to break piles and has low cost
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Embodiment Construction
[0019] Such as figure 1 As shown, the present embodiment provides a long auger bored pile method, the step S1: according to the design drawing of the pile location, measure the axis of the pile location, the positioning point, and make a mark; step S2: wait for the drilling rig to be in place Finally, drill into the hole to be constructed; Step S3: Carry out pressure grouting to concrete, and during pressure grouting, after reaching the end hole of the design pile bottom elevation, first pump in concrete and stop for a specified time, then promote the drilling rig drill pipe; step S4: after the concrete grouting is completed, insert the reinforced cage made in advance to the design depth until the grouting pile is formed, and the filling coefficient of the grouting pile is 1.0-1.2.
[0020] In the method of the long helical drilling and grouting pile described in this embodiment, in the step S1, according to the design drawing of the pile location, the axis of the pile locatio...
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The invention relates to a long spiral drilled press-grouting pile method. The long spiral drilled press-grouting pile method comprises the steps that according to a pile position design drawing, a pile position axis and a positioning point are laid out, and marks are made; after a drilling machine takes place, hole drilling is conducted on a to-be-constructed position; press-grouting of concreteis conducted, during press-grouting, after an end hole of bottom elevation of a designed pile is reached, concrete is pumped firstly, stopping is conducted at the designated time, and then a drillingrod of the drilling machine is lifted; and after concrete press-grouting is completed, a steel reinforcement cage manufactured in advance is inserted to the designed depth until a press-grouting pileis formed, and the filling coefficient of the press-grouting pile is 1.0-1.2. The long spiral drilled press-grouting pile method is simple, the pile forming quality is ensured advantageously, and pilebreaking is avoided.
Description
technical field [0001] The invention relates to the technical field of pile foundation engineering, in particular to a method for pressing grouting piles with long auger holes. Background technique [0002] The construction method of the long screw pile pile foundation does not require mud or cement slurry wall protection, so the construction efficiency is high and the pile quality is stable. This type of pile not only has advanced technology, simple construction equipment, mature technology, and fast pile formation speed, but also has no noise and pollution, and will not have any impact even if it is operated in the living area. Although the long auger bored pile technology is a kind of cast-in-situ pile technology, it has similarities with the general bored pile pile technology, and the construction technology is also the same, but it has more advantages than the traditional cast-in-place pile construction method. Many advantages. Therefore, long auger bored grouting pil...
Claims
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IPC IPC(8): E02D5/36E02D15/04
Inventor 李雷
Owner CHINA MCC20 GRP CORP