Construction formwork for construction joint

By introducing a design that integrates a pivot shaft with a side plate in the construction formwork, the side plate flips over and is clamped to the top of the bridge using an adjusting rod and a fixing plate. This solves the problem of tie rod suspension when fixing existing formwork, enables the formwork to be folded and stored and adapted to bridges of different thicknesses, and ensures smooth concrete pouring.

CN224063281UActive Publication Date: 2026-03-31THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
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Patent Information

Application Number
CN202520624677.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-03-31
Estimated Expiration
2035-04-03

AI Technical Summary

Technical Problem

The existing construction formwork for bridge construction joints requires the bottom formwork to be hoisted during fixing, which results in the presence of tie rods, affecting concrete pouring, and the tie rods cannot be retrieved after pouring.

Method used

The system uses a rotating shaft and side plate, which are flipped and clamped to the top of the bridge via an adjusting rod and a fixing plate. The adjusting plate and side plate are adapted to different thicknesses, avoiding the need for tie rods to suspend the bottom formwork. The adjusting plate is fixed to both sides of the bridge with fastening nuts to ensure smooth concrete pouring.

Benefits of technology

It enables the folding and storage of construction formwork and adapts to bridges of different thicknesses, avoiding the problem of tie rod suspension, ensuring smooth concrete pouring and preventing formwork bulging.

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Abstract

The utility model discloses a construction template for the construction joint, including bottom die, side die subassembly and tensioning rod, the side wall of bottom die is provided with the rotating shaft, the side die subassembly includes the side plate that cooperates with the rotating shaft, with the adjusting plate that cooperates with the side plate and the adjusting rod that controls the height of the adjusting plate, the tensioning rod tensions the adjusting plate. The rotating shafts are matched with the side plates, overturning, folding and storage of the side plates are facilitated, the fixing plates on the side walls of the adjusting rods can be clamped to the top of a bridge by rotating the adjusting rods, the side die composed of the adjusting rods and the side plates can be used in cooperation with bridges of different thicknesses, and the problem that a pull rod is assembled at the top of the bottom die for suspension is solved; concrete pouring between bridge joints is not affected, the adjusting plates are tensioned and tightly pressed on the two sides of a bridge through fixing of the fastening nuts, and formwork expansion is avoided.
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