Existing anchor cable secondary tensioning and prestress adjusting device

By designing a device including anchor tensioning assembly, tensioning anchor cable, tensioning anchor disk, jack and reaction bracket assembly, the problem of the existing anchor cable that cannot effectively tension shorter and lack of real-time monitoring of prestress changes in the prior art is solved, and stable and simple secondary tensioning and real-time monitoring effects are achieved.

CN119711757APending Publication Date: 2025-03-28ANHUI TRANSPORTATION HLDG GRP CO LTD +1
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Patent Information

Application Number
CN202411876434.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing secondary tensioning technology of anchor cables cannot effectively tension shorter existing anchor cables, and lacks the ability to monitor prestress changes in real time.

Method used

A device including an anchor tensioning assembly, a tensioning anchor cable, a tensioning anchor disk, a jack and a reaction bracket assembly is designed. The existing anchor cable and a tensioning anchor cable are connected through the anchor tensioning assembly, and the tensioning is achieved using the jack and a tensioning anchor disk, and the force measuring part is set for real-time monitoring.

Benefits of technology

It realizes stable secondary tensioning of shorter existing anchor cables without destroying the original structure, is easy to operate, can monitor prestress changes in real time, and meets the needs of stable tensioning and real-time monitoring.

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Abstract

The invention provides an existing anchor cable secondary tensioning and prestress adjusting device which is used for conducting secondary tensioning on an existing anchor cable stretching out of an existing anchor disc and comprises an anchoring tensioning assembly used for sleeving and fixing the existing anchor cable, a plurality of tensioning anchor cables, a tensioning anchor disc, a jack and a counter-force support assembly used for supporting and fixing the jack. The tensioning anchor disc is arranged on a piston rod of the jack, one ends of the tensioning anchor cables are fixed to the anchoring tensioning assembly, the other ends of the tensioning anchor cables sequentially penetrate through the counter-force support assembly and the jack and are fixed to the tensioning anchor disc, and the anchoring tensioning assembly, the jack and the tensioning anchor disc are coaxially arranged. And the central axes of the tension anchor cables are overlapped. According to the method, secondary tensioning of the existing anchor cable can be achieved under the condition that the tail of the existing anchor cable is short, the original structure of the existing anchor cable is not damaged during tensioning construction, operation is convenient and fast, and application is easy.
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