Prestress connection integrated double-column pier plastic hinge structure

By using a prestressed integrated double-column pier plastic hinge structure, steel strands and reinforced stirrups are used to connect the cap beam, double-column pier, and abutment, solving the problem of brittle failure of prefabricated piers under seismic loading and improving the stability and construction efficiency of the bridge.

CN224077955UActive Publication Date: 2026-04-03CENT PLAINS INST OF SCI & TECH
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Patent Information

Application Number
CN202520847765.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-04-03
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

Existing prefabricated double-column bridge piers are prone to brittle failure at connection nodes under seismic loading, resulting in poor overall bridge stability, slow construction speed, and serious pollution.

Method used

The prestressed integrated double-column pier plastic hinge structure is adopted, which connects the cap beam, double-column pier and abutment through steel strands, and the stirrups are densified in the plastic hinge zone. Corrugated pipes and nuts are used to fix the steel strands, and epoxy resin is applied to the contact surface to improve the overall seismic resistance and construction efficiency.

Benefits of technology

It enhances the overall integrity between the piers, cap beams, and abutments, improves seismic resistance, ensures bridge stability, and at the same time shortens the construction period and reduces environmental pollution.

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Abstract

The utility model relates to the technical field of constructional engineering, and discloses a prestress connection integrated double-column pier plastic hinge structure which comprises a cover beam, double-column piers and a bearing platform, the cover beam and the bearing platform are arranged up and down, and the double-column piers are arranged on the two sides of the cover beam and the two sides of the bearing platform; the bent cap, the double-column pier and the bearing platform are connected in series through steel strands, a plastic hinge area is arranged at the position of the double-column pier, and dense stirrups are installed in the plastic hinge area. According to the prestress connection integrated double-column pier plastic hinge structure, the cover beam, the double-column pier and the bearing platform are connected through various measures, the shock resistance among the cover beam, the double-column pier and the bearing platform after assembly is enhanced, and therefore the stability of a follow-up bridge during use is guaranteed, the overall construction speed is increased through the mode, and the construction period is shortened. And the pollution to the surrounding environment is further reduced.
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