Concrete pouring structure and method for super-large-span prestressed steel box concrete cover beam

By opening casting holes and exhaust holes on the top plate of the cover beam steel box and using a V-shaped funnel to ensure the compactness of concrete, the problems of lateral deformation of the steel box and the intact concrete cover beam of the overspan prestressed steel box are solved, and an efficient, safe and environmentally friendly construction method is achieved.

CN119686224APending Publication Date: 2025-03-25SICHUAN ROAD & BRIDGE EAST CHINA CONSTRUCTION CO LTD +1
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Patent Information

Application Number
CN202411963450.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

In the construction of the concrete cover beam of the super-large span prestressed steel box, the steel box is deformed laterally and the concrete is not poured tightly, which affects the structural quality and safety.

Method used

Pouring holes and exhaust holes are opened on the roof of the cover beam steel box, a V-shaped funnel is used to ensure that the concrete is poured tightly in the closed steel box, sealing measures are set to avoid concrete pollution, and the pouring order is controlled to ensure stability outside the steel box.

Benefits of technology

Through this method, the structural stability of the steel box of the super-span prestressed steel box concrete cover beam and the uniformity and compactness of the concrete are ensured, and the construction quality and safety are improved.

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Abstract

The invention discloses a concrete pouring structure and method for a super-large-span prestressed steel box concrete cover beam. The structure is provided with a steel box and a V-shaped funnel, and a pouring hole and an exhaust hole are reserved in a top plate of the steel box; the bottom of the V-shaped funnel is connected with a capping beam pouring hole, no gap exists, and concrete enters the box through the funnel. The problems that in the concrete pouring process of the prestressed steel box concrete cover beam, lateral deformation of a steel box is large, and concrete pouring is not compact are mainly solved. According to the mode, pouring holes and exhaust holes are mainly formed in a top plate of the bent cap steel box to ensure that concrete is densely poured in the closed steel box, blocking measures are arranged to prevent the concrete from polluting the steel box, and the out-of-plane stability in the concrete pouring process of the bent cap steel box is ensured by controlling the pouring sequence; and an efficient, safe and environment-friendly construction method is provided for the super-large-span prestressed steel box concrete cover beam.
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