Construction method of building pile foundation

Abstract

The invention discloses a construction method of a building pile foundation, and relates to the field of buildings. The problems that the stability is not enough during manufacturing of the building pile foundation, and the construction period is long are solved. According to key points of the technical scheme, the construction method comprises the steps: (1) a foundation hole supporting platformdesign mold is prefabricated, a foundation hole supporting platform forming mold is designed according to the shape and scale of a foundation hole, and then a concrete forming supporting platform is poured in the mold to be aired to be formed; (2) preparation before drilling is conducted; (3) drilling is conducted; (4) the foundation hole is broadened; (5) a supporting hole is broadened; (6) a foundation hole supporting platform is buried, specifically, the prefabricated foundation hole supporting platform is hoisted into the foundation hole through a crane and stably placed; (7) a retaining cylinder is buried; and (8) a pile is formed. According to the construction method of the building pile foundation, the structural strength of the building pile foundation can be improved while the construction period is shortened, and the construction difficulty is small.

Description

technical field [0001] The present invention relates to a kind of building construction method, more specifically, it relates to a kind of building pile foundation construction method. Background technique [0002] The pile foundation is composed of the foundation pile and the cap connected to the top of the pile. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation. If the bottom of the platform is above the bottom surface, it is called a high cap pile foundation. The building pile foundation is usually a low cap pile foundation. In high-rise buildings, the pile foundation is widely used. [0003] The current installation and construction methods can be divided into prefabricated piles and cast-in-place piles. Prefabricated piles drive prefabricated reinforced concrete piles into the site through a pile driver, which can save materials and have high strength. It is suitable for buildi...

AI Technical Summary

Problems solved by technology

[0003] The current installation and construction methods can be divided into prefabricated piles and cast-in-situ piles. Prefabricated piles drive prefabricated reinforced concrete piles into the site through a pile driver, which can save materials and have high strength. It is suitable for buildings with high requirements. The disadvantage is that the construction is difficult. The construction time is long due to the limitation of the number of machines; while the cast-in-situ piles are firstly drilled on the construction site, and when the required depth is reached, the steel bars are placed in the poured concrete to fix the shape. It is not limited by the number of machines, and all piles can be constructed at the same time, which greatly saves time, but the disadvantage is that the bearing capacity is low. Therefore, the main difficulty in the current construction method for cast-in-situ piles is how to improve their bearing capacity

[0004] Chinese invention patent, the patent number is CN106284317B, which is called a construction method for building pile foundations. This scheme introduces a construction method for cast-in-place piles. By prefabricating foundation holes at the bottom of the holes and then pouring, the structural strength of the pile foundations is improved. , to improve its bearing capacity, but in the process of implementing the scheme, it was found that it would take a long time, and it would take a lot of manpower and time to pour and form the foundation hole, because the foundation hole is located underground, the environment is harsh, the humidity is high and the soil is relatively soft. Therefore, the poured concrete is very difficult to dry and form, and it will take a long time to be fixed and formed, which will greatly delay the construction period, and the construction environment of the workers is too poor to ensure the quality of the formation of the foundation hole, so it is necessary to propose a plan to improve this plan

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