Non-uniform reinforcing bar prefabricated support pile as well as forming method and forming die thereof

Abstract

The invention discloses a non-uniform reinforcing bar prefabricated support pile. The non-uniform reinforcing bar prefabricated support pile comprises a concrete pile body and a reinforcing bar cage arranged in the concrete along the axial direction of the pile body, wherein the reinforcing bar cage comprises a plurality of main steel reinforcing bars which are arranged in an axial parallel manner and are parallel to the axis of the pile body; the quantity of reinforcing bars on at least one side of the non-uniform reinforcing bar prefabricated support pile is greater than that of reinforcing bars on other sides of the non-uniform reinforcing bar prefabricated support pile; and the center of the non-uniform reinforcing bar prefabricated support pile is eccentric to the center of a pile body through hole. According to the non-uniform reinforcing bar prefabricated support pile disclosed by the invention, under the condition that the average reinforcement ratio of the section remains the same, the bent bearing capacity of the section can be improved; and the consumption of the reinforcing bars can be reduced when the bent bearing capacity of the section is same. The invention further discloses a method and a die for producing the non-uniform reinforcing bar prefabricated support pile.

Description

technical field [0001] The invention belongs to the field of construction, and relates to an improvement in the shape and structure of foundation piles in the field of construction, a manufacturing method and a molding die, in particular, a prefabricated support pile with uneven reinforcement and applied to construction foundation pits. Its molding method and molding die. Background technique [0002] Existing building foundation pit support piles are generally in the shape of a cylinder, and are made by cast-in-place methods. Specifically, pre-drilling is carried out around the foundation pit of the building to be excavated to drill the pile holes, and then the bound circular steel cage is hoisted into the pile holes and centered, and finally the concrete is injected into the pile holes. The excavation of the building foundation pit can be carried out after the concrete fully reaches the strength in the pile hole and solidifies. [0003] The support pile mainly bears the ...

AI Technical Summary

Problems solved by technology

[0003] The support pile mainly bears the lateral thrust. The support piles made by the current cast-in-place method are not scientifically arranged in a circular cross-section. At the same time, because of the cast-in-place, the reinforcement cage cannot be prestressed. The effect of the reinforcement It has not been fully utilized, causing a lot of steel bars and concrete to be wasted. During the process of pouring the support piles on site, the production cycle is long and a large amount of mud is produced, which not only pollutes the environment, but also has a high cost of mud treatment. The overall cost of the project is greatly increased

[0004] In addition, the prefabricated piles used for foundation pit support generally bear a large one-way lateral force, while the current prefabricated piles with symmetrical structures and uniform reinforcement have the same performance indicators at symmetrical positions. There is often a waste of raw materials such as steel bars and concrete when supporting foundation pits

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