A construction engineering prestressed concrete construction device and construction method thereof

By designing a prestressed concrete construction device including a tensioning mechanism, a jet mechanism and a knocking mechanism, the problem of weakening of clamping force during the steel bar tensioning process is solved, and the stable forming and strength improvement of concrete is achieved.

CN119352767BActive Publication Date: 2025-03-28FUJIAN SOUTHEAST DESIGN GRP CO LTD
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Patent Information

Application Number
CN202411895944.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28
Estimated Expiration
2044-12-23

AI Technical Summary

Technical Problem

During the construction of prestressed concrete, the clamping force is weakened due to the reduction in diameter during the steel bars, which affects the stability of the tensioning process and thus affects the formation of concrete prestress.

Method used

A construction device including a tensioning mechanism, a jet mechanism and a knocking mechanism is designed. The tensioning mechanism ensures that the clamping force remains stable during the tensioning process through the cooperation of the sliding plate and the hydraulic jack; the jet mechanism cools the steel bars through high-pressure gas to reduce friction heat and prevent the clamping position from heating up; the knocking mechanism uniformly tensions and secondary clamps the steel bars through the cooperation of the arc spring and the knocking block to prevent slack.

Benefits of technology

Through this construction device, instability during steel bar tension can be effectively prevented, stable molding of prestressed concrete can be ensured, and strength and durability of concrete can be improved.

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Abstract

The invention relates to the technical field of building construction, and discloses a prestressed concrete construction device for building engineering and a construction method thereof, comprising a tensioning mechanism, wherein the tensioning mechanism comprises a forming frame, wherein two sliding plates are slidably connected to the inner wall of the forming frame, and a hydraulic jack is fixedly connected to the side wall of the forming frame. A worker inserts a steel bar into the forming frame, starts the hydraulic jack to retract, drives the sliding plate to move, moves a spring piston rod, and makes the top of the spring piston rod contact with the inclined surface of an inclined surface block to be squeezed, thereby pushing hydraulic oil to move, and pushing a clamping block by the hydraulic oil to clamp the steel bar. The steel bar can be tensioned by the clamping block. As the steel bar is tensioned, the inclined surface block will continue to squeeze the spring piston rod, so that the clamping block maintains sufficient clamping force. The tensioning force and the clamping force can be gradually adjusted, so that the clamping force and the tensioning force maintain proper coordination, thereby preventing the diameter of the steel bar from being slightly reduced when the steel bar is tensioned.
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