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Stay cable single-time synchronous tensioning device and stay cable single-time synchronous tensioning method

A technology of tensioning devices and cable-stayed cables, which is applied to cable-stayed bridges, erection/assembly bridges, bridge parts, etc., can solve the problems of many process conversions, unbalanced cable tension, low construction efficiency, etc. Fewer conversion times, less impact of manual operation, and improved construction efficiency

Pending Publication Date: 2020-08-18
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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Problems solved by technology

[0005] The embodiment of the present application provides a single-time synchronous tensioning device and method for cable-stayed cables, which solves the problem of many process conversions, low construction efficiency, and cable force tension during the tensioning process of multi-layer cable-stayed cables in the prior art. Unbalanced and poor tensioning precision technical problems

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  • Stay cable single-time synchronous tensioning device and stay cable single-time synchronous tensioning method
  • Stay cable single-time synchronous tensioning device and stay cable single-time synchronous tensioning method
  • Stay cable single-time synchronous tensioning device and stay cable single-time synchronous tensioning method

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Embodiment Construction

[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0036] The embodiment of the present application provides a single synchronous tensioning device for cable-stayed cables, which can solve the problem of many process conversions, low construction efficiency and cable force tension in the process of tensioning multi-layer cable-stayed cables in the prior art. Unbalanced and poor tensioni...

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Abstract

The invention relates to a stay cable single-time synchronous tensioning device, and relates to the technical field of bridge construction, the tensioning device comprises more than two layers of tensioning assemblies, and each layer of tensioning assembly is used for tensioning a layer of stay cable; each layer of tensioning assembly comprises a PLC, a power device, a plurality of pairs of centerhole jacks and a plurality of pressure sensors, and each pair of center hole jacks are symmetrically arranged at the two ends of the anchor beam. The power device is used for controlling all the center hole jacks; the plurality of pressure sensors are mounted on the center hole jack one by one; the PLC is connected with all the pressure sensors and the power device, and the PLC controls the center hole jacks to synchronously tension the multiple layers of stay cables. The invention further discloses a tensioning method of the stay cable single-time synchronous tensioning device. The stay cable single-time synchronous tensioning device solves the technical problems that in the multi-cable-surface multi-layer stay cable tensioning process in the prior art, the number of process conversion times is large, the construction efficiency is low, cable force tensioning is unbalanced, and the tensioning precision is poor.

Description

technical field [0001] The present application relates to the technical field of bridge construction, in particular to a single synchronous tensioning device and method for stay cables. Background technique [0002] At present, cable-stayed bridges are more and more widely used. Cable-stayed bridges are multiple statically indeterminate structures, and the stress conditions of beams, towers and cables are relatively complicated. During the cable tensioning process, a factor that has a greater impact on the construction is the unbalanced force. The unbalanced force is mainly caused by the impact of the cable-stayed cables that are stretched in place on the same layer or different layers. The influence of the cable force of the cable; when the unbalanced force is too large, it will affect the force of the main structure of the bridge and increase the difficulty of controlling the line shape of the whole bridge. The generation of unbalanced force is particularly prominent in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/16E01D11/04
CPCE01D11/04E01D19/16E01D21/00
Inventor 查道宏张耿李军堂罗兵陈涛胡勇姚森崔一兵贾维君姜江华杨浩宋宇亮舒海华
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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