Isolation protection device and construction method for preventing pile foundation reinforcement cage deflection

Abstract

The invention provides an isolation protection device and construction method for preventing pile foundation reinforcement cage deflection, and belongs to a bridge construction auxiliary device in construction engineering and a construction method of the bridge construction auxiliary device. The isolation protection device comprises a guiding column, and a hook is arranged at the top end of the guiding column. The hook is shaped like an n. The construction method for preventing pile foundation reinforcement cage deflection comprises the steps that the guiding column stretches into a pile hole; the n-shaped hook is hanged on a steel casing; a reinforcement cage is installed in place; concrete is poured. The isolation protection device and construction method for preventing pile foundation reinforcement cage deflection have the advantages that the guiding column has the effects of guiding and isolation with the hole wall on the reinforcement cage, and in the pouring process, the reinforcement cage is not likely to deflect. Along with increasing of the poured concrete quantity, the torque becomes larger, the guiding column always exists to conduct isolation and guiding in the middle, it is guaranteed that on the condition that the torque becomes larger, deflection does not occur, the bending moment in the reinforcement cage is not accumulated to be too large, the phenomena that in the concrete pouring process, the reinforcement cage rotates left and right, swings to collide the hole wall, deflects and deforms can be effectively prevented, deflection control is stable and reliable, and the construction quality is guaranteed.

Description

[0001] Technical field: [0002] An isolation protection device for preventing the deflection of a pile foundation reinforcement cage and a construction method thereof, which belong to bridge construction auxiliary devices in construction engineering, and a construction method thereof. [0003] Background technique: [0004] During the railway construction process, many bridge constructions are involved. The bridge foundations are bored pile foundations and enlarged foundations. The number of bored piles is large, the pile foundations are long, and the enlarged foundations are many. In the process of pile foundation construction, after the pile foundation is holed, the reinforcement cage is hoisted into the hole, and the reinforcement cage is often fixed by welding cross reinforcement after the hole is inserted (that is, welding cross reinforcement is added in the radial direction of the reinforcement cage, and then the cross reinforcement cage is fixed). The reinforcement is w...

AI Technical Summary

Problems solved by technology

Just after the bottom of the reinforcement cage enters the hole, the device is installed around it, and the adjustment of the straight thread ejector can play a certain role in correcting the deflection of the reinforcement cage. In the vertical direction and the horizontal direction, the force on the reinforcement cage is uncertain, so the control of the deflection of the reinforcement cage by the device is not very stable and reliable, and the use of the device is cumbersome and the construction time is prolonged

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