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Fabricated prestressing device and method for high pier scaffoldings

A prefabricated and preloaded technology, which is applied in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems of long connection distance between upper and lower anchor points, difficulty in changing anchor points, and high overall cost, so as to achieve uniform load distribution and improve work efficiency and the effect of versatility and simple structure

Active Publication Date: 2017-02-15
CCCC SECOND HARBOR ENG
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Problems solved by technology

Although it can effectively solve the preloading problem in the construction projects of high piers and large-tonnage structures, the connection distance between the upper and lower anchor points is relatively long, there are many links such as connection and anchoring, the operation is cumbersome, the anchor point is difficult to change, and the overall cost is high. High, and there are certain security risks and other deficiencies

Method used

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  • Fabricated prestressing device and method for high pier scaffoldings
  • Fabricated prestressing device and method for high pier scaffoldings
  • Fabricated prestressing device and method for high pier scaffoldings

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] Depend on Figure 1 to Figure 4 It can be seen from the structural schematic diagram of a high pier support assembly type preloading device that the present invention includes a bridge pier 8, and a support is arranged on the bridge pier 8; it also includes a three-dimensional truss; the three-dimensional truss is hinged on the top of the pier 8; the bottom end of the three-dimensional truss The first stress distribution beam group is fixedly connected; the second stress distribution beam group is arranged at the upper end of the bracket; a hydraulic jack 14 is arranged between the first str...

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Abstract

The invention discloses a fabricated prestressing device and method for high pier scaffoldings. The fabricated prestressing device includes piers on which the scaffoldings are positioned, and a spatial truss. The spatial truss is hinged to the top of the piers. The base of the spatial truss is fixedly connected to a first stress distribution allocation girder group for prestressing. The upper end of the scaffoldings is provided with the second allocation girder group for prestressing. A hydraulic jack is arranged between the first and the second allocation girder group for prestressing. The fabricated prestressing device has a simple structure and is easily assembled and disassembled. Not only can the device actualize the prestressing test for piers and scaffoldings quickly and effectively but the device can also remove the inelastic deformation of scaffoldings in the process of prestressing. The device can obtain an accurate deformation value of every pier and scaffolding under the corresponding load effect.

Description

technical field [0001] The invention relates to a preloading device for a high pier support, which belongs to the technical field of bridge engineering construction, in particular a device suitable for preloading a high pier support and convenient for installation and disassembly. Background technique [0002] Preloading is an important task in the construction of long-span bridges with high piers. On the one hand, it is to detect the safety of the bracket and eliminate the inelastic deformation of the bracket. On the other hand, the deformation value of the foundation and support under the action of the corresponding load can be observed, and the elastic deformation value can be calculated to provide data support for the vertical formwork elevation of the support after unloading. [0003] Traditional support preloading methods are divided into heap preloading method and anti-fulcrum preloading method. [0004] Loading preloading is to use sand bags, concrete blocks, water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 周乐平胡义新李送根周舒宋永哲刘宁波李志成欧华平
Owner CCCC SECOND HARBOR ENG
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