Flapper pile tip of sinking pipe cast-in-place pile and use method thereof

Abstract

The invention relates to a flapper pile tip of a concrete CFC material sinking pipe cast-in-place pile, which can be used for placing a reinforced steel cage and connected at an external angle of the bottom of a sinking pipe through hinges. The flapper pile tip of the concrete CFC material sinking pipe cast-in-place pile is characterized by being made from a conical steel plate with radian; two sides and the tip end of the steel plate are cut into inclined planes, and the upper end of the steel plate is provided with a hinge connecting mechanism; and the steel plate forms a cone with a hollow cavity in the middle after closing so as to reduce sinking resistance of the pile tip. The flapper pile tip of the concrete CFC material sinking pipe cast-in-place pile has good seepage-proofing performance, ingenious structure, simple operation and convenient use, and can be reused; and the invention saves cost, reduces the manufacturing cost, shortens time limit for a project and improves the working efficiency.

Description

technical field [0001] The invention relates to construction equipment and a use method of cast-in-place reinforced concrete, plain concrete and CFG material piles, in particular to a valve pile tip of an immersed tube pouring pile and a use method. Background technique [0002] Circular cast-in-place reinforced concrete piles have been widely used in the field of foundation engineering. Since the pile side friction resistance and pile end resistance are the main bearing capacity of circular pile foundations, the demand for reinforced concrete is too large, which requires a lot of cost . In order to reduce the demand for reinforced concrete, plain concrete, and CFG materials and reduce costs, the comparative document of Patent No. 200710020306.3 provides a construction method for X-shaped reinforced concrete piles, which adopts the method of leaving the reinforced concrete prefabricated pile tip in the foundation, but this This approach has the following disadvantages: ① Fo...

AI Technical Summary

Problems solved by technology

increased construction costs

③The strength of the prefabricated pile tip concrete must reach 100% of the design strength before it can be used, which delays the construction period

If the pile driver is transferred to the next construction site, the hardened site will be scrapped

④ For prefabricated pile tips, there will inevitably be secondary transportation costs (from the prefabricated site to the construction site)

If there is a little carelessness during construction, the tube will be stuck, and the immersed tube will be scrapped.

⑥The bottom surface of the prefabricated pile tip is a plane body, and the sinking tube has a large resistance to sinking. The pile driver must be driven in a vibrating state to sink the tube to sink

In this way, the filling coefficient of concrete is increased, which will inevitably increase the amount of materials and reduce the bearing capacity of the pile.

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