Test instrument and method for testing strength of anchor plate of anchorage device
A strength test and anchorage technology, which is applied in the direction of strength characteristics, the use of stable tension/pressure test material strength, instruments, etc., can solve the problem that the test result data cannot be obtained accurately, there are no detailed test details, and there is no anchor plate strength test. Detailed description and other issues to achieve the effect of perfecting the requirements and reducing the deviation of the data
Inactive Publication Date: 2019-11-29
CHINA RAILWAY NO 9 GRP ENG TESTING CO LTD +1
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Problems solved by technology
In "Anchors, Clamps and Connectors for Prestressed Tendons" (GB / T14370-2015), there is no detailed description of the anchor plate strength test, and in "Clip Anchors, Clamps and Connectors for Prestressed Tendons in Railway Engineering" "(TB / T3193-2016), "Technical Regulations for the Application of Anchors, Fixtures and Connectors for Prestressed Tendons" (JGJ 85-2010) standards also only briefly describe the test process, without detailed test details And the specific test equipment makes this test have many uncertain factors, which leads to certain deviations in the test and detection process of the engineering test and testing unit, and it is impossible to accurately obtain the test result data
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[0022] Such as Figure 1-3 As shown, the present invention includes two parts, a load transmission plate structure and a supporting structure; it is characterized in that: a shell-like structure with one end open of the supporting structure, a displacement sensor 5 is arranged in the chamber of the shell-like structure; the anchorage to be tested 4 Placed between the load transfer plate structure and the support structure, the test load is loaded on the load transfer plate structure and transmitted to the anchor through the load transfer plate structure, the anchor is deformed, and the contact needle of the displacement sensor 5 in contact with the bottom of the anchor is collected The deformation signal is transmitted to the subsequent data analysis device.
[0023] Preferably, the load transfer plate structure comprises mild steel plate 3 .
[0024] Preferably, an inverted isosceles trapezoidal high-strength plug 11 is provided between the mild steel plate 3 and the anchor,...
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Abstract
The invention relates to a test instrument and method for testing strength of an anchor plate of an anchorage device among the anchorage device, a clamp and a connector for prestressed reinforcement.The test instrument comprises a load transmitting plate structure and a bearing structure and is characterized in that one end of the bearing structure is of an open shell structure, and displacementsensors are arranged in a chamber of the shell structure; and a to-be-tested anchorage device is placed between the load transmitting plate structure and the bearing structure, and test load is loadedon the load transmitting plate structure and is transmitted to the anchorage device through the load transmitting plate structure. Requirements of related test instruments for an anchor plate strength test are improved, and deformation value data are accurately detected.
Description
technical field [0001] The invention relates to an anchorage for prestressed tendons, a fixture and a test device for the strength of the anchor plate in the connector and a strength test method thereof. Background technique [0002] At present, the safety and quality issues in bridge construction are one of the focuses of all construction parties. Among them, prestressed construction in bridge engineering is the most important thing. It is particularly important to strengthen the inspection of various links in prestressed construction. [0003] In the current standard, there are clear standards and test methods for prestress testing except for the anchor plate strength test. However, the method of anchor plate strength detection is not perfect, and no specific test equipment is given. In "Anchors, Clamps and Connectors for Prestressed Tendons" (GB / T14370-2015), there is no detailed description of the anchor plate strength test, and in "Clip Anchors, Clamps and Connectors f...
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IPC IPC(8): G01N3/12G01N3/04
CPCG01N3/12G01N3/04
Inventor 赵家满纪凯
Owner CHINA RAILWAY NO 9 GRP ENG TESTING CO LTD