A construction method of cast-in-place pile

Abstract

The invention discloses a construction method of cast-in-situ piles, which aims to solve the problem of excessive leakage of concrete to the inner wall of the pile hole due to the large filling coefficient of the inner wall of the pile hole in the existing technology of cast-in-situ piles, thereby reducing the cost of pouring The technical problem of pile strength; the process of this construction method is: driving the casing casing into the ground at the ground position of the designed cast-in-place pile, and digging out the soil and sand in the casing casing; Vibrate and squeeze the vibrator down along the casing casing to penetrate deep into the ground, then take out the vibrator to fill in the soil and compact it; after that, put a reinforcement cage in the pile hole, and pour concrete into the pile hole While pulling out the casing casing, the casing casing will be completely pulled out after the pouring of concrete is completed, and the construction of the cast-in-place pile will be completed after the concrete is completely solidified. This construction method can greatly reduce the filling coefficient around the inner wall of the pile hole, prevent the concrete in the pile hole from leaking too much to the outside, and thus improve the strength of the cast-in-place pile.

Description

technical field [0001] The invention belongs to a building construction method, in particular to a construction method of cast-in-situ piles. Background technique [0002] The cast-in-situ pile is a kind of construction body used in urban buildings. It is formed by directly opening a hole on the designed pile position with a circular cross-section. After the hole is formed, a steel cage is placed in the hole and concrete is poured. Cast-in-situ piles have been widely used in construction due to their advantages of no vibration, no soil extrusion, low noise, and suitable for use in densely built urban areas during construction. [0003] Cast-in-situ piles can be divided into cast-in-place piles with dry operation, cast-in-place piles with mud retaining walls, and cast-in-place piles with manual digging according to the hole-forming process; cast-in-place piles can be divided into Immersed tube cast-in-situ piles, bored cast-in-place piles, manual digging cast-in-place piles,...

AI Technical Summary

Problems solved by technology

[0004] Although the current hole-forming method of the auger drilling machine can realize drilling and pouring more conveniently, the inner wall of the pile hole completed by this construction method is relatively loose soil and sandstone, which leads to pouring into the pile hole. When the casing casing is pulled out from the concrete side, due to the large filling coefficient of the loose soil and sand on the inner wall of the pile hole, the concrete in the pile hole will leak excessively to the inner wall of the pile hole, thereby reducing the amount of concrete The strength of the cast-in-place pile after solidification reduces the service strength and life of the building. Therefore, it is urgent to solve this problem in the construction of the cast-in-place pile

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