A self-extending construction method for perforated piles
A construction method and extended technology, applied in drilling equipment and methods, percussion drilling, excavation, etc., can solve problems such as pile hole deflection, hole collapse, and affecting pile strength, so as to reduce hole collapse and increase strength , to prevent the effect of deflection
Active Publication Date: 2021-10-29
中电建宁夏工程有限公司
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Problems solved by technology
[0003] The perforated piles in the prior art are generally cylindrical and equal-diameter piles, and the equal-diameter piles are prone to problems such as hole collapse and pile hole deflection, which affect the strength of the pile.
Method used
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Embodiment 1
[0036] see Figure 1-4 , a self-extending construction method for punching piles, comprising the following steps:
[0037] S1. Preparatory work: Level the site, clean up the construction site, use the surveyors to accurately measure and place points, determine the position of the pile center point, check the equipment, and ensure that all equipment can operate normally;
[0038]S2. Embedding the casing: move the casing mechanism and the extension slotting mechanism to the pile position, and set the casing mechanism on the outside of the extension slotting mechanism, and hammer the casing mechanism into the soil through the vibration of the vibrating hammer , the extended slotting mechanism stays on the soil surface in the cylinder;
[0039] S3. Impact hole forming: move the impact hole forming pile driver to the position near the pile position, level the pile driver, start the pile driver to drive the pile head to carry out the punching operation, and the pile driver drives t...
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The invention discloses a punching pile self-extending construction method, which belongs to the technical field of punching cast-in-situ piles. A punching pile self-extending construction method comprises the following steps: preparation work; impacting to form holes; placing a reinforcement cage and a conduit Concrete pouring; the casing mechanism includes a cylinder body, vertical grooves are opened on the outer walls of both sides of the cylinder body, the extension slotting mechanism is arranged inside the cylinder body, the extension slotting mechanism includes an impact block, and the interior of the impact block is provided with a built-in groove. It can be realized through the setting of the casing mechanism and the extension slotting mechanism, and the construction is carried out in cooperation with the construction method. When the hole is impacted, a plurality of extension holes connected with the pile hole are opened on both sides of the pile hole, so that when pouring concrete, the concrete grout It can automatically extend into the extension groove. The concrete in the extension groove is solidified to form an extension arm. The extension arm can effectively support the pile, thereby reducing the occurrence of hole collapse and pile hole deflection, and improving the strength of the pile.
Description
technical field [0001] The invention relates to the technical field of perforated cast-in-place piles, and more specifically relates to a self-extending construction method for perforated piles. Background technique [0002] Punched cast-in-place pile is a kind of cast-in-situ pile. The cast-in-place pile is formed by directly forming a hole on the pile position at the construction site, and then putting it into a steel cage and pouring concrete. The perforated cast-in-situ pile is first punched by a punching machine to form a hole for the mud retaining wall to form a hole. The advantages are: the harmful effect on the adjacent buildings and the surrounding environment is small; the pile length and diameter can be changed freely according to the design requirements; the pile end can enter the bearing layer or be embedded in the rock formation; the single pile has a large bearing capacity, etc. [0003] The perforated piles in the prior art are generally cylindrical equal-di...
Claims
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IPC IPC(8): E21B1/00E02D5/34E02D5/38E02D5/62E02D17/08
CPCE02D5/34E02D5/38E02D5/62E02D17/08E21B1/00
Inventor 杨盈
Owner 中电建宁夏工程有限公司