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A steel beam prestressed tensioning device and its tensioning control method

A tensioning device and prestressing technology, which is applied in the direction of construction, building structure, and building material processing, can solve the problems of poor adjustment accuracy and deviation, and achieve the effect of improving smooth changes

Inactive Publication Date: 2016-09-07
郑晟
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, in the adjustment and control process of the tension force, the adjustment accuracy is poor, and there is often a large deviation between the adjustment expected value and the actual adjustment result

Method used

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  • A steel beam prestressed tensioning device and its tensioning control method
  • A steel beam prestressed tensioning device and its tensioning control method
  • A steel beam prestressed tensioning device and its tensioning control method

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Embodiment Construction

[0025] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, will not be described in detail here.

[0026] refer to Figure 1-6 , a specific embodiment of the present invention includes a steel beam body 1, a plurality of anchor points are arranged on the steel beam body 1, a tension cable 2 is connected to each anchor point, and the other end of the tension cable 2 is connected to a hydraulic tensioning Mechanism 3, the hydraulic stretching mechanism 3 is connected with the controller 4, a backing plate 5 is arranged on the anchor point, the backing plate 5 is connected on the steel beam body 1 through the first rubber pad 12, and the backing plate 5 is provided with a The through hole 6 through which th...

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Abstract

The invention discloses a steel girder prestressed tensioning device, which comprises a steel girder body, a plurality of anchor points are arranged on the steel girder body, each anchor point is connected with a tension cable, and the other end of the tension cable is connected to Hydraulic stretching mechanism, the anchor point is provided with a backing plate, the backing plate is provided with a through hole for the tension cable to pass through, the top of the backing plate is provided with an outer sleeve, and the outer sleeve is coaxially provided with an inner sleeve, The outer sleeve is fixedly connected with the backing plate, the inner side of the inner sleeve slides with the tension cable through the first damper, the outer side of the inner sleeve slides with the outer sleeve through the second damper, and the hydraulic tension mechanism is connected to the first tension The sensor, the outer sleeve and the inner sleeve are respectively connected to the second tension sensor and the third tension sensor through measuring cables. The present invention also provides a tension control method of the steel beam prestressed tension device. The invention can improve the deficiencies of the prior art, and improves the adjustment and control precision of the steel beam prestress.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a steel beam prestressed tensioning device and a tensioning control method thereof. Background technique [0002] Post-tensioned prestressed concrete structures are widely used in practical engineering. During the stretching process of prefabricated beams, the prestressed tension effect is generally guaranteed by controlling the reading of the oil pump pressure gauge and the elongation of the prestressed steel beam. Due to the influence of comprehensive factors, there will be some loss of prestressed force during tension. There is a certain gap between the actual permanent prestress of the structure and the theoretical value, which leads to an unknown quantity of permanent effective prestress in the beam body, thus burying a safety hazard for future use. Chinese invention patent CN 102922601 B discloses a bridge prestress tension control and feedback method, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/12
Inventor 郑晟
Owner 郑晟
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