Cast-in-place post-tensioning method-based I-shaped support pile and manufacturing method of support pile

Abstract

The invention discloses a cast-in-place post-tensioning method-based I-shaped support pile and a manufacturing method of the support pile. According to the support pile, an I-shaped pile body is arranged on a prefabricated template; a plurality of prestressed ribs and non-prestressed ribs are symmetrically distributed on the I-shaped pile body; embedded pipes are coaxially sleeved outside all the prestressed ribs; and a reinforcing part of the I-shaped pile body is provided with embedded irons. The manufacturing method comprises the main steps of manufacturing components such as the prefabricated template and a steel reinforcement framework; erecting the steel reinforcement framework on the prefabricated template; fixing the embedded pipes and the embedded irons on the steel reinforcement framework; pouring concrete on the prefabricated template; plastering and maintaining in sequence after the concrete is poured; performing prestressed tensioning after the concrete strength is reached; and storing for later use after the tensioning is finished. With the mode, the rigidity of the pile body is improved, the durability of the pile body is increased, the vibration and the elastic deformation are reduced, the bending and shear resistance is enhanced, the deformation of a foundation pit can be greatly reduced, and the cost can be reduced by 30-40 percent.

Description

technical field [0001] The invention relates to a post-tensioning method prestressed support pile and an engineering pile, in particular to a manufacturing method of an I-shaped support pile and a support pile based on the post-tensioning method of on-site pouring. Background technique [0002] At present, there are many kinds of prefabricated concrete piles in the market as foundation piles, such as square piles, tubular piles (round pipe piles, square pipe piles) and other types of piles. Each of these pile types has its advantages and disadvantages, and each has its applicable engineering conditions. Most of the tubular piles are prestressed concrete piles, which have the advantages of high bearing capacity and economical material saving, but because of their thin and hollow walls, they have poor shear and bending resistance; square piles have two types, square and rectangular, which have high bearing capacity. It has the advantages of high bending and shearing resistanc...

AI Technical Summary

Problems solved by technology

Most of the tubular piles are prestressed concrete piles, which have the advantages of high bearing capacity and economical material saving, but because of their thin and hollow walls, they have poor shear and bending resistance; square piles have two types, square and rectangular, which have high bearing capacity. The advantages of high bending and shear resistance, but it is a solid pile, the amount of concrete is large, the weight is heavy, and the transportation is inconvenient

Now with the development of engineering technology, in order to continuously meet the requirements of engineering, only relying on these shapes of piles can no longer meet engineering applications well.

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