Drawing test device for research on stress characteristics of anchor rods
A pull-out test, bolt technology, applied in the direction of measurement device, strength characteristics, and the use of applied stable tension/pressure to test material strength, etc. To solve problems such as directional force, to achieve the effect of reasonable research results and easy troubleshooting
Active Publication Date: 2017-07-21
CHANGAN UNIV
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Problems solved by technology
[0003] However, the current anchor pullout test equipment does not consider the normal force along the anchor mortar body, but the actual anchor mortar body is subjected to If there is a certain normal force, this shows that there is a big difference between the research results of the existing equipment and the actual situation, which is not conducive to the reasonable design and construction of the bolt.
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Embodiment 1
[0049] The jack of this embodiment adopts a through-the-heart type hydraulic jack.
[0050] Comply with the above technical solutions, such as Figure 1 to Figure 15 As shown, this embodiment provides a pull-out test device for research on the mechanical characteristics of anchors, including an anchor preparation system 1 and a loading system 2; the anchor preparation system 1 is used to prepare anchor mortar, and the loading system 2 is used for Axial and normal forces are applied to the anchor.
[0051]The bolt preparation system 1 includes a system frame 1-1, a backing plate 1-2, a first shell 1-3 and multiple second shells 1-4, the system frame 1-1 is a cubic closed-loop structure, including multiple Horizontal beams 1-5 and vertical beams 1-6, system frame 1-1 are used to support the system. The horizontal beam 1-5 and the vertical beam 1-6 are perpendicular to each other, and the right side of the system frame 1-1 is provided with multiple longitudinal beams 1-7 parall...
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Abstract
The invention provides a drawing test device for research on stress characteristics of anchor rods. The drawing test device comprises an anchor rod preparation system and a loading system. The anchor rod preparation system comprises a system frame, a base plate, a first shell and a plurality of second shells, and the loading system comprises an axial force loading device and a normal force loading device. The drawing test device has the advantages that anchor rod manufacturing and stress tests are integrated with one another for the first time, the anchor rods can be manufactured at first, then axial drawing force can be applied to the anchor rods, stress conditions of the anchor rods can be analyzed, effects of applying controllable normal stress on mortar for the anchor rods can be realized in procedures of drawing tests on the anchor rods, actual axial stress conditions of the anchor rods can be approximately simulated, results of related research on axial stress characteristics of the anchor rods appear reasonable and applicable, and the drawing test device can effectively serve for designing and constructing the anchor rods.
Description
technical field [0001] The invention belongs to the technical field of rock and soil reinforcement structure test instruments or equipment, and in particular relates to a pull-out test device for researching the force characteristics of anchor rods. Background technique [0002] As a commonly used engineering reinforcement structure, bolts are widely used in the reinforcement engineering of tunnel surrounding rock, slope body, foundation pit wall and subgrade, which greatly ensures the safety and smooth development of related engineering construction. In order to determine the axial pull-out limit and design load of the bolt after construction, it is often necessary to carry out the pull-out test of the bolt on site. Research on the axial pullout limit and design load, axial force distribution form and effective anchorage depth of anchor bolts has great practical significance for the rational design and construction of anchor bolts. [0003] However, the current bolt pullou...
Claims
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IPC IPC(8): G01N3/10
CPCG01N3/10G01N2203/0003G01N2203/0017G01N2203/0048
Inventor 孙巍锋晏长根刘保健许江波包含万琪
Owner CHANGAN UNIV