Device for conducting fatigue performance tests on anchorage device connector and method therefor

A fatigue performance test and connector technology, applied in the field of testing, can solve problems such as poor versatility, high test cost, and unstable test quality, and achieve the effects of high versatility, low test cost, reliable technical foundation and technical services

Active Publication Date: 2018-06-15
中钢集团郑州金属制品研究院股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the fatigue performance test of the anchor connector is mainly to use the fatigue testing machine to directly connect the anchor connector for testing. The current test method has the following defects: poor versatility, unstable test quality, and a special test platform needs to be built , high cost of testing

Method used

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  • Device for conducting fatigue performance tests on anchorage device connector and method therefor
  • Device for conducting fatigue performance tests on anchorage device connector and method therefor
  • Device for conducting fatigue performance tests on anchorage device connector and method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The method of the present embodiment comprises the following steps:

[0040] A. Preparing steel strands: Prepare seven steel strands 8 as a group, with a free length greater than 800mm and a specification model of 1×7-15.20-1860, and cut the required steel strands.

[0041] B. Build the internal structure: first connect one end of four pre-tensioned struts 9 with a length of 1m to a fixed support plate 5 through four positioning bolts 10, and then connect the four pre-tensioned struts 9 through other four positioning bolts 10. The other end of the strut 9 is connected with another fixed support plate 5 to form an I-shaped wheel-shaped internal structure; wherein, the threaded section of the positioning bolt 10 is screwed into the threaded blind hole corresponding to the end of the pre-tensioned strut 9 , the positioning bolt 10 can slide freely in a small gap relative to the fixed support plate 5 in the light hole 5-2.

[0042] C, wear steel strands: wear the prepared ...

Embodiment 2

[0048] The method of the present embodiment comprises the following steps:

[0049] A. Preparing steel strands: prepare six steel strands 8 as a group, free length greater than 800mm, and specifications and models 1×7-15.20-1860, and cut the required steel strands.

[0050] B. Build the internal structure: first connect one end of four pre-tensioned struts 9 with a length of 1m to a fixed support plate 5 through four positioning bolts 10, and then connect the four pre-tensioned struts 9 through other four positioning bolts 10. The other end of the strut 9 is connected with another fixed support plate 5 to form an I-shaped wheel-shaped internal structure; wherein, the threaded section of the positioning bolt 10 is screwed into the threaded blind hole corresponding to the end of the pre-tensioned strut 9 , the positioning bolt 10 can slide freely in a small gap relative to the fixed support plate 5 in the light hole 5-2.

[0051] C, wear steel strands: wear the prepared steel s...

Embodiment 3

[0057] The method of the present embodiment comprises the following steps:

[0058] A. Preparing steel strands: prepare four steel strands 8 as a group, free length greater than 800mm, and specifications and models 1×7-15.20-1860, and cut the required steel strands.

[0059] B. Build the internal structure: first connect one end of four pre-tensioned struts 9 with a length of 1m to a fixed support plate 5 through four positioning bolts 10, and then connect the four pre-tensioned struts 9 through other four positioning bolts 10. The other end of the strut 9 is connected with another fixed support plate 5 to form an I-shaped wheel-shaped internal structure; wherein, the threaded section of the positioning bolt 10 is screwed into the threaded blind hole corresponding to the end of the pre-tensioned strut 9 , the positioning bolt 10 can slide freely in a small gap relative to the fixed support plate 5 in the light hole 5-2.

[0060] C, wear steel strands: wear the prepared steel ...

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Abstract

The invention discloses a device for conducting fatigue performance tests on an anchorage device connector and a method therefor. The invention comprises an internal framework in the shape of an I-shaped wheel, anchorage devices positioned on two outer end faces of the internal framework, an external connecting assembly used for connecting the internal framework to a fatigue test machine, and a strain gage connected with an external monitoring system. Via steel strand preparation, internal framework building operation, a step of installing steel strands in a pass-through manner and then anchoring the same, a step of mounting the external connecting assembly, a step of connecting the fatigue test machine, a loading method and an assembling method for conducting fatigue tests, and the straingage arranged at a detection position of the anchorage device connector as needed, the device and the method disclosed in the invention can be used for monitoring stress value in real time and collecting data so as to simulate an actual working state in which the anchorage device connector bears a dynamic load; the device and the method are characterized by stable testing quality, high universality, low test cost and simple operation; a reliable technology base and technology service can be provided for determining a fatigue performance state of the anchorage device connector and conducting experimental study on fatigue life.

Description

technical field [0001] The invention belongs to the technical field of testing, and more specifically relates to a device and method suitable for fatigue performance testing of anchorage connectors. Background technique [0002] With the implementation of reform and opening up, the national economy has been greatly improved, and infrastructure has also entered a period of rapid development. In infrastructure construction, prestressed concrete engineering has become the main force, and in prestressed concrete engineering, anchorage connectors need to be widely used, and the role of anchorage connectors has become increasingly prominent. Especially in post-tensioned structures or components, in order to maintain the tension of the prestressed tendons and transmit the tension to the interior of the concrete, the anchorage connector is inseparable. Anchor connectors used in dynamic load structural engineering (such as bridge engineering, high-speed rail, subway, etc.) The fati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 何岩黄帅杜瑞青江艳乔梁伊西特张苯张平萍
Owner 中钢集团郑州金属制品研究院股份有限公司
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