A lumen template type cable anchoring system and method of installation thereof

By using an internal cavity template-type cable anchoring system, combining the advantages of steel and concrete, the structure of the tower anchoring zone is optimized, solving the problems of high construction difficulty and high installation accuracy requirements for long-span cable-stayed bridge towers, and achieving improved tower wall stress and simplified construction.

CN119465777BActive Publication Date: 2026-06-16中铁大桥勘测设计院集团有限公司武汉分公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
中铁大桥勘测设计院集团有限公司武汉分公司
Filing Date
2024-11-19
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The pylon structure of modern long-span cable-stayed bridges is prone to horizontal cracks when under stress, which leads to high construction difficulty and high project cost. In addition, the existing anchoring methods require a large number of prestressed tendons and high-precision control at high altitudes.

Method used

An internal cavity template type cable anchoring system is adopted, which combines traditional concrete toothed blocks, steel anchor beams and steel anchor boxes. It utilizes pull-out but not shear-resistant force transmission keys, traditional shear keys and rubber pads to optimize the anchoring zone of the cable tower into a steel toothed block and annular steel anchor box structure, which bears the tensile force through the combination of steel and concrete.

Benefits of technology

It effectively improves the stress state of the tower wall, reduces the tower wall thickness, simplifies construction, improves installation accuracy and quality, reduces construction complexity, and fully utilizes the mechanical properties of steel and concrete.

✦ Generated by Eureka AI based on patent content.

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    Figure CN119465777B_ABST
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Abstract

The application discloses a kind of inner cavity template type cable anchoring system and its installation method, more horizontal force and unbalanced force are borne by multiple separate steel anchor box segments, and vertical force is transmitted to concrete tower wall, the mechanical properties of steel and concrete material are fully considered, the tensile strength of steel anchor box segment main tension plate is played, and the tower cable anchoring area is optimized to steel tooth block and ring-shaped steel anchor box structure by using anti-pull shear force key, traditional force transmission key and rubber pad.The application can effectively improve the stress state of tower wall, reduce the thickness of tower wall without setting the tower wall ring prestressed steel, at the same time, the inner size of bridge tower is relatively regular, the construction is relatively convenient, the quality is easy to guarantee, and can be used as tower column inner membrane, by setting steel tooth block structure, the post-welding construction is also convenient, has higher use and popularization value.
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