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Synchronous calibration test method for bridge prestressed automatic tensioning equipment

A test method and prestressing technology, which is applied in the field of synchronous calibration test of bridge prestressed automatic tensioning equipment, can solve the problem of synchronous calibration test of stretching elongation at both ends of the equipment and method, unable to test the synchronous control performance of elongation value, Automatic tensioning equipment can not be put into use and other problems to achieve the effect of avoiding errors, convenient installation and operation, and strong practicability

Active Publication Date: 2015-12-23
CHINA RAILWAY NO 3 GRP CO LTD +1
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Problems solved by technology

[0003] In order to solve the problem that the existing prestressed automatic tensioning equipment calibration test equipment and method cannot perform synchronous calibration tests on the tensile elongation values ​​at both ends, it is therefore impossible to check whether the elongation value synchronization control performance of this type of equipment meets the specification requirements. The problem that the automatic tensioning equipment cannot be put into use provides a synchronous calibration test method for bridge prestressed automatic tensioning equipment

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  • Synchronous calibration test method for bridge prestressed automatic tensioning equipment

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Embodiment Construction

[0025] The specific embodiment of the present invention will be further described in conjunction with the accompanying drawings.

[0026] Synchronous calibration test method for bridge prestressed automatic tensioning equipment, the steps are as follows:

[0027] Step 1: Place two hydraulic pump stations of automatic tensioning equipment, two jacks to be inspected and one host control cabinet on a flat ground. The placement sequence is the host control cabinet --- two hydraulic pump stations --- two jacks. Then connect the host control cabinet and the two hydraulic pump stations with signal cables, and connect the two hydraulic pump stations and the two jacks with oil pipe signal lines respectively to reach the state of use. The two jacks to be checked are the jacks used at both ends of a bundle of steel strands when the actual bridge is stretched;

[0028] Step 2: Place the frames of the two synchronous calibration test racks horizontally next to the jack, then put the spri...

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Abstract

The invention belongs to the technical field of synchronous calibration tests of automatic bridge prestress tensioning equipment, and in particular relates to a synchronous calibration testing method for automatic bridge prestress tensioning equipment, for solving the problem that the synchronous calibration tests on tension elongation values of two ends cannot be carried out by using the conventional calibration testing equipment and method of the automatic bridge prestress tensioning equipment. The method comprises the following steps of: arranging and connecting two hydraulic pump stations, two jacks to be tested and a host computer control cabinet, putting the two jacks into a synchronous calibration testing rack, inputting maximum tension 20% and 100% force values into a control host computer, starting the machine and starting the hydraulic pump stations, stopping when the force values achieve the values, reading the elongation value readings of the two jacks at the moment, recording, repeating, and calculating and analyzing the test result. The method has the beneficial effects that the technical blank in the synchronous calibration tests of the automatic tensioning equipment is made up, and the key difficulties in population and application of the automatic tensioning equipment are solved.

Description

technical field [0001] The invention belongs to the technical field of synchronous calibration test of prestressed automatic tensioning equipment, and in particular relates to a synchronous calibration test method of bridge prestressed automatic tensioning equipment. Background technique [0002] Prestressed automatic tensioning equipment is a kind of prestressed bridge tensioning equipment with automatic control function, which can automatically control the tension of the bridge according to the set program and ensure the synchronization of the tension and elongation values ​​at both ends, so it has superior technology performance. However, the specification stipulates that any tensioning equipment must be calibrated before use and after a period of use. Only after passing the calibration test and verifying that its performance meets the specifications and technical requirements can it be put into construction. However, the existing test equipment and test methods can onl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
Inventor 黄林陈勇王志强孙凤栋闫晓光程秀茹李海峰吴仁友
Owner CHINA RAILWAY NO 3 GRP CO LTD
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