Construction method for jointing of steel reinforcement cages of reinforced concrete drilling bored concrete pile

Abstract

The invention relates to the field of drilling bored concrete pile construction, in particular to a construction method for jointing of steel reinforcement cages of a reinforced concrete drilling bored concrete pile. The construction method solves the problems of unwarranted joint quality, complicated jointing operation, time and energy waste, low construction speed and the like of conventional steel reinforcement cage jointing. The construction method comprises the following steps of: 1) performing rolling and straight thread processing on bar ends of the steel reinforcement cage; 2) manufacturing the steel reinforcement cage in a segmented way by using a steel reinforcement cage bar joint jointing precision control device; and 3) positioning the lower segment of the steel reinforcement cage in a hole, adjusting the levelness of a lower joint end face first, hoisting the upper segment of the steel reinforcement cage in place, adjusting the verticality, aligning all main bars of the upper and lower segments of the steel reinforcement cages in positions and pressing against the ends next, and screwing sleeves of the main bar ends of the upper segment of the steel reinforcement cage downwards on the main bar ends of the lower segment of the steel reinforcement cage at last to realize the jointing of the upper and lower steel reinforcement cages. The construction method guarantees the bar joint quality, has high steel reinforcement cage joint performance and high construction speed, reduces piling time, saves cost on machine team and the like and shortens the construction period.

Description

technical field [0001] The invention relates to the construction field of bored piles, in particular to a butt joint construction method for reinforced concrete bored piles with reinforcement cages. Background technique [0002] Reinforced concrete cast-in-place piles are currently widely used in foundation treatment projects for housing construction, railways, highway bridges and culverts, and municipal engineering. Among them, the reinforced concrete cast-in-place piles used in the design of railways, highways and municipal bridges and culverts have large pile diameters, large main reinforcement diameters, and relatively large steel bars. Due to the characteristics of high density and long pile body, the weight and length of the reinforced cage made at one time are relatively large, which makes it very difficult to install the reinforced cage at one time, and the safety risk during hoisting is large. Therefore, the construction of longer reinforced cages is generally It ad...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a butt joint construction method for reinforced concrete bored pile reinforcement cages in order to solve the problems that the quality of the joints cannot be guaranteed, the operation is cumbersome, time-consuming and laborious, and the construction speed is slow when the reinforcement cages of existing reinforced concrete bored piles are docked.

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