Self- adaptive suspension bridge structure by means of structural self- weight and construction method thereof

By using adaptive suspension bridge structure adjustment components and main girder self-weight design, the problem of insufficient ground anchorage force during the construction phase of suspension bridges on soft soil foundations was solved, achieving reasonable stress balance and economical design of the main girder, and reducing project costs.

CN117587694BActive Publication Date: 2026-07-24SHANGHAI MUNICIPAL PLANNING & DESIGN INST CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI MUNICIPAL PLANNING & DESIGN INST CO LTD
Filing Date
2023-12-29
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing technologies, it is difficult to ensure that the ground anchor force of suspension bridges on soft soil foundations meets the force required for the erection of the main beam during the construction phase. At the same time, the retention of ground anchor force in the later stage causes unfavorable floating system displacement of the main beam, making it impossible to achieve reasonable force balance.

Method used

The bridge adopts an adaptive suspension bridge structure. By adjusting the pulley principle of the components and the self-weight design of the main beam anchorage, the anchorage volume and ground anchoring force are reduced by utilizing the principle of dynamic pulleys. The ground anchoring force is provided by the self-weight of the main beam. The upper and lower rotating shafts of the adjustment components are designed in a cam shape to adapt to the stress changes of the main beam and reduce the floating displacement of the main beam.

Benefits of technology

This achieves the goal of meeting the force requirements for main beam erection during the construction phase, while reducing ground anchor force, minimizing floating displacement of the main beam, reducing project costs, and even eliminating the need for side piers, thereby improving the structure's economy and adaptability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of self-adapting suspension bridge structure and its construction method by means of structure self-gravity, and the suspension bridge structure includes main beam, the both ends of the main beam are provided with main beam anchor span, the opposite outer end of the main beam anchor span is respectively provided with anchor, and the anchor is connected between the main beam anchor span, the adjusting assembly includes lower rotating shaft rotatably installed on the main beam anchor span, upper rotating shaft located above the lower rotating shaft, and anchor cable, the end of the main cable is fixed with the upper rotating shaft, the first end of the anchor cable is fixed with the anchor, and the second end of the anchor cable is fixed with the upper rotating shaft after winding the upper rotating shaft and then winding the lower rotating shaft, and the upper rotating shaft is hanging type movable pulley relative to lower rotating shaft.The present application solves the technical problem that how soft soil foundation self-adapting anchor suspension bridge can ensure that anchor force meets the erection force of main beam in construction stage in prior art, while retaining the anchor force in later period, the displacement of main beam can be reduced when floating type system is generated, and the stress of beam body is not beneficial.
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