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Prestress steel structure tension construction method capable of accurately setting up tension force

A technology of tension and tension, which is applied in building construction, processing of building materials, construction, etc., can solve the problems of expensive vibration sensors and high construction costs, and achieve control of tension quality, reliable tension, and clear force transmission Effect

Active Publication Date: 2013-05-08
CHINA METALLURGICAL CONSTR ENG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, the vibration sensor is more expensive and the construction cost is high

Method used

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  • Prestress steel structure tension construction method capable of accurately setting up tension force
  • Prestress steel structure tension construction method capable of accurately setting up tension force
  • Prestress steel structure tension construction method capable of accurately setting up tension force

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] A prestressed steel structure tensioning construction method for accurately establishing tension force, in which a tensioning device and a checking device for the tensioning device are used.

[0026] like figure 1 As shown, the tensioning device includes a steel rod 1 , a steel strand connector 2 , a reaction frame 3 and a through-hole hydraulic jack 4 . The steel rod 1 has a through hole on the axis, one end of the steel rod 1 forms an external thread through mechanical tapping, and the other end of the steel rod 1 is fixedly connected to the steel strand connector 2 . The structure of reaction frame 3 is as figure 2 As shown, the reaction frame 3 has a U-shaped structure, one end of the reaction frame 3 has an opening, and the reaction frame 3 has a central through hole 5 , which is arranged on the other end of the rea...

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Abstract

The invention discloses a prestress steel structure tension construction method capable of accurately setting up tension force. The prestress steel structure tension construction method capable of accurately setting up the tension force includes the following steps. Firstly, a tension device is checked. Secondly, tension construction is performed by the tension device. A steel strand used by prestress concrete penetrates through a steel rod, a steel strand connection device and a counterforce frame. An opening end of the counterforce frame is arranged on the top of a support. A center hole hydraulic jack is installed at the other end of the counterforce frame and the steel strand is clamped. Two strain pieces are symmetrically adhered onto the middle of the steel rod. In time of tensioning, the strains pieces are used for recording in real time and detecting deformation. Tension force can be accurately worked out according to a conversion relationship between deformation and the tension force. The prestress steel structure tension construction method capable of accurately setting up the tension force uses the tension device to tension and is clear in force transmission, reliable in tension, simple and clear as a tension force level can be directly reflected by numerical reading of a strain gauge and beneficial to control of tension quality.

Description

technical field [0001] The invention relates to a steel structure tensioning construction method, in particular to a prestressed steel structure tensioning construction method for accurately establishing tension force. Background technique [0002] At present, prestressed steel structures are developing rapidly in the field of steel structure engineering, especially in large-span and large-space structures, the application of prestressed steel structures can increase structural rigidity, give full play to the strength of high-strength steel, and reduce the amount of structural steel. The construction of prestressed steel structures will inevitably involve the tension of prestressed cables. [0003] In the existing prestressed tensioning technology, the main tensioning method generally adopts tensioning jacks. There are mainly the following ways to control the size of the tension force: [0004] (1) Pressure gauge measurement method; the principle of this method is to calcu...

Claims

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Application Information

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IPC IPC(8): E04G21/12
Inventor 周敬汤华平陈华峰
Owner CHINA METALLURGICAL CONSTR ENG GRP
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