Testing device for shear-resistant fatigue property of chemical anchoring stud

A fatigue performance and test device technology, applied in the direction of measuring devices, scientific instruments, strength characteristics, etc., can solve the problems of incomplete collection of mechanical performance parameters, poor universality and reusability of fixtures, and affecting the shear force of studs. Achieve the effects of ensuring pure shear stress state, improving recycling efficiency and wide application range

Inactive Publication Date: 2013-12-11
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still many problems in the shear fatigue performance test of chemical anchor bolts: (1) After a long time of use, the fixture itself is prone to loosening or position deviation, resulting in the failure of the shear force to act vertically on the test object. Affect the reliability of the test results; (2) After the stud is subjected to the shear force, the contact surfaces of the two fixtures contact and generate friction, which interferes with the shear force acting on the stud and affects the test results; (3) Due to the fluidity of the chemical anchoring glue, it often occurs that the chemical anchoring glue overflows and b

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  • Testing device for shear-resistant fatigue property of chemical anchoring stud
  • Testing device for shear-resistant fatigue property of chemical anchoring stud
  • Testing device for shear-resistant fatigue property of chemical anchoring stud

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Embodiment Construction

[0042] It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0043] figure 1 It is a schematic diagram of an exploded structure of a chemical anchoring stud anti-shear fatigue performance test device of an embodiment of the invention; Figure 2-a , Figure 2-b Is the isometric drawing of the first fixture and the second fixture without a sleeve stiffening plate; Figure 2-c , Figure 2-d It is a isometric view of the first clamp and the second clamp with sleeve stiffening plate; Figure 3-a , Figure 3-b , Figure 3-c Is a schematic diagram of the first clamp and the second clamp after being assembled; Figure 4 It is an axonometric drawing with a circlip sleeve; Figure 5-a , Figure 5-b Is a T-sleeve isometric drawing; Figure 6-a , Figure 6-b , Figure 6-c , Figure 6-d , Figure 6-e , Figure 6-f , Figure 6-g , Figure 6-h , Figure 6-i It is a schematic diagram of the asse...

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Abstract

The invention provides a testing device for a shear-resistant fatigue property of a chemical anchoring stud. The testing device comprises a fatigue tester transverse beam (2) and a fatigue tester pedestal (3), wherein the fatigue tester transverse beam (2) is connected with the fatigue tester pedestal (3) by fatigue tester uprights (1), and a fixture assembly guaranteeing a pure shear stress state of the stud during a fatigue test is arranged between the fatigue tester transverse beam (2) and the fatigue tester pedestal (3). The testing device is reasonable in design, simple in structure and easy to operate and use; a T-shaped flange is arranged, and connected by a bolt, so that the testing device can be matched with testers in multiple specifications for use; and an application scope of the testing device is wider.

Description

Technical field [0001] The invention relates to the technical field of a test device for shear fatigue performance, in particular to a test device for the shear fatigue performance of a chemical anchor stud. Background technique [0002] At present, a large number of chemical anchoring studs are used in civil engineering to strengthen and strengthen the in-service bridge structure, especially in the anchoring of high-speed railway ballastless track slabs. In order to ensure the effective anchoring between the ballastless track slab and the bridge deck under the dynamic load of the train, it is usually used to drill holes in the ballastless track slab and the bridge deck, then fill the holes with chemical anchoring glue, and insert studs to anchor the two Together. Under the dynamic load of the train, once the stud shear failure occurs, it will directly affect the stability of the high-speed railway track slab, thereby affecting the safety of the high-speed railway line operation...

Claims

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Application Information

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IPC IPC(8): G01N3/04G01N3/32
Inventor 朱志辉
Owner CENT SOUTH UNIV
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