Cantilever cast-in-place beam hanging basket prestress preloading system and method

By using a prestressed preloading system with hanging baskets for cantilever cast-in-place beams, the deformation of the bottom formwork is automatically detected by controllers and sensors, solving the problems of cumbersome operation and low efficiency in existing technologies, and achieving efficient preloading assessment and construction quality assurance.

CN117431855BActive Publication Date: 2026-06-26中交一航局西南工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
中交一航局西南工程有限公司
Filing Date
2023-11-29
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The existing hanging basket preloading method is cumbersome to operate, has low construction efficiency, cannot fully reflect the deformation of the bottom formwork, and is costly and has low reusability.

Method used

A prestressed preloading system for cantilever cast-in-place beams is adopted, including a controller, preloading seat, pressure foot, tilt sensor, steel strands and loading container. Automatic deformation detection is achieved through pressure sensor and electric cylinder, and the deformation of the bottom formwork is comprehensively evaluated by combining electric control telescopic device and tilt sensor.

Benefits of technology

It simplifies the preloading process of the hanging basket, improves construction efficiency, can automatically detect the overall and local deformation of the bottom formwork, ensures construction quality, and reduces construction difficulty and cost.

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Abstract

The application discloses a cantilever cast-in-situ beam hanging basket prestress pre-pressing system and method, and relates to the technical field of building machinery, which comprises a controller, a pre-pressing seat, a pressing foot, an inclination sensor, a steel strand and a loading container. The pressing foot comprises an electric control telescopic device, the fixed end of the electric control telescopic device is fixedly connected with the bottom end of the pre-pressing seat, and the telescopic end is connected with a foot pad through a pressure sensor. The method comprises the step of monitoring the local deformation amount during the loading process. The application greatly simplifies the process of the cantilever cast-in-situ beam hanging basket prestress pre-pressing, reduces the construction difficulty, automatically realizes deformation monitoring during the pressurizing process, can not only integrally evaluate the deformation degree of the hanging basket bottom formwork, but also can detect and evaluate the deformation of the local area of the bottom formwork, and can further guarantee the construction quality and improve the construction efficiency.
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