CN219200673U - Stress test ring of anchor structure and test device with same - Google Patents

Abstract

The application provides a stress test ring of anchor structure, including ring body and foil gage, the center department of ring body is equipped with the perforation that runs through whole ring body, is equipped with a plurality of breach on the lateral wall of ring body, the foil gage card is established in the breach, the upper and lower both sides of foil gage with both sides contact about the breach is provided with the resistance wire in the foil gage, and the resistance wire is equipped with the external connection mouth. The technical scheme that this application provided can the internal force effect of real-time supervision prestressing anchor. The stress test ring is simple to install, long in service time, convenient to measure and high in precision.

Description

Stress test ring of anchor structure and test device with same

Technical Field

The utility model relates to a stress test ring of an anchoring structure and a test device with the stress test ring, and belongs to the technical field of geotechnical engineering.

Background

With the continuous development of engineering construction scale, the rock-soil anchoring technology has highlighted a wide application prospect. In order to strengthen the stability of a foundation pit or a side slope in civil engineering, anchor rods are usually arranged on the edge or the side slope of the foundation pit for anchoring. The anchor rod is a rod system structure for reinforcing a rock-soil body, and the longitudinal tension effect of the anchor rod overcomes the defect that the tensile capacity of the rock-soil body is far lower than the compressive capacity, and increases the cohesiveness of the rock-soil body. In the using process of the anchor rod, the detection of the anchoring quality and the anchoring effect is an important measurement index in engineering quality, and the measurement of the anchoring quality is usually measured through the stress change of the anchor rod, but the stress change of the anchor rod cannot be identified by naked eyes, so that a stress testing device is often required to be installed on the anchor rod to monitor the stress change of the anchor rod.

The existing anchor rod stress testing device mainly comprises the following two types: 1. steel bar meter (string frequency) measurement method: the anchor rod body is provided with a reinforcing steel bar meter every 2m from inside to outside, the reinforcing steel bar meter is connected with the rod body through a screw sleeve and a wire, the stress change condition of the anchor rod is monitored by measuring the vibration frequency of the wire, the number of the embedded elements is large, the installation is complex, and the survival rate cannot be ensured; 2. axial force meter measurement method: and when the stress of the anchor rod changes, the steel strings in the axial force meter are stretched or shortened under the action of external force to generate frequency increase or decrease, and the corresponding pulling pressure change is calculated according to the measured frequency. The steel string is particularly thin, so that the device is not easy to install, the steel wire is easy to break under high-frequency vibration, the steel wire is easy to damage and lose efficacy, the axial force meter is usually provided with a steel column with a certain height as a main body due to the fact that the steel wire is arranged, the whole device is heavy and difficult to install, materials are consumed, and the stress condition of an anchor rod can be influenced by the gravity of the axial force meter during use due to the heavy weight, so that the measurement result is influenced. The Chinese patent No. 201721579552.8 (a reinforcing bar meter for monitoring rock and soil anchors) has the problems that the installation is complex and the survival rate is difficult to accurately control although a protective tube is sleeved outside a reinforcing bar meter main body.

Therefore, how to provide a stress testing device with an anchoring structure, which is convenient to install, long in service time and high in measurement accuracy, is a technical problem to be solved by the technicians in the field.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the device which is convenient to install, long in service time and high in measurement precision. The utility model provides a stress test ring of an anchoring structure, which comprises a ring body and a strain gauge, wherein a through hole penetrating through the whole ring body is formed in the center of the ring body, a plurality of notches are formed in the outer side wall of the ring body, the strain gauge is clamped in the notches, the upper side and the lower side of the strain gauge are contacted with the upper side and the lower side of the notches, a resistance wire is arranged in the strain gauge, and an external interface is arranged on the resistance wire.

According to a first embodiment of the present utility model, there is provided a stress testing ring for an anchoring structure:

the utility model provides an anchor structure's stress test ring, includes ring body and foil gage, the center department of ring body is equipped with the perforation that runs through whole ring body, be equipped with a plurality of breach on the lateral wall of ring body, the foil gage card is established in the breach, the upper and lower both sides of foil gage with both sides contact about the breach, be provided with the resistance wire in the foil gage, the resistance wire is equipped with the external connection mouth.

Further, the strain gauge is symmetrically arranged on the side edge of the ring body, the strain gauge is a square plane sheet body, and the strain gauge is arranged in the middle of the axis direction of the ring body.

Further, the arrangement direction of the resistance wires in the strain gauge is perpendicular to or parallel to the axis of the ring body.

Further, the resistance wire in the strain gauge comprises a horizontal arrangement section and a vertical arrangement section, the horizontal arrangement section is connected with the vertical arrangement section in series, and the two ends of the resistance wire, the horizontal arrangement section and the connection part of the vertical arrangement section are all provided with external interfaces.

Further, the thickness of the ring body is 25-35mm, the inner diameter of the ring body is 40-60mm, and the outer diameter of the ring body is 100-150mm.

Further, the inner side surface of the notch is a plane, the depth of the inner side surface of the notch gradually decreases from the middle to the two sides, and the connecting line of the outer interface extends from the two sides of the notch side.

According to a second aspect of the present utility model, a stress testing device for an anchoring structure includes the stress testing ring, an anchor rod, an anchor member, and a clamping member, wherein a sleeve is arranged outside an anchoring section of the anchor rod, the anchor member is disposed at a joint between a free section and an anchoring section of the anchor rod, the anchor rod is provided with a certain pulling force, and is fixedly locked by the anchor member, the free section of the anchor rod passes through a perforation of the stress testing ring, and the clamping member and the anchor member clamp and fix the stress testing ring.

Further, the anchoring piece is a backing plate provided with a screw hole, the anchoring piece is in threaded connection with the free section of the anchor rod, one surface of the anchoring piece, which is in contact with the stress testing ring, is a plane, and the area of the anchoring piece is larger than that of one end surface of the stress testing ring.

Further, the clamping piece is a fixed plate provided with a threaded hole, the clamping piece is in threaded connection with the free section of the anchor rod, and the area of the bottom surface of the clamping piece is larger than that of one end surface of the stress testing ring.

Further, the anchor rod further comprises a fixing piece, wherein the fixing piece is arranged on the free section of the anchor rod and connected with the clamping piece, and is used for fixing the clamping piece and the stress testing ring on the free section of the anchor rod.

Compared with the prior art, the technical scheme that this application provided has following technical effect:

(1) After the prestress anchor rod is tensioned and locked by the anchoring piece, the rod body from the lockset at the top of the anchor rod to the bearing plate of the anchor bottom structure and all clamps are stressed uniformly and equally, the stress of the stress test ring clamped between the lockset at the anchor top and the anchoring steel plate is in an axial compression state, and the stress of the stress test ring is the same as that of the rod body of the anchor rod, so that the measurement data is more accurate;

(3) The double strain gauges are arranged at right angles, one is used for measuring axial compression deformation and the other is used for measuring circumferential expansion deformation, measurement data are mutually compensated, and resistance signals measured by the double-gauge serial circuit are greatly enhanced;

(4) According to the method, each finished element is required to be tested to determine the linear coefficient (equation) of resistance (omega) -pressure (kN) before leaving the factory, the change of the internal force of the anchor rod body can be calculated according to the calibrated linear equation by measuring the resistance value each time, and the accuracy of a final test result is improved;

(5) The stress test ring of this application installs the free end at the stock when using, is convenient for install and changes, and is not fragile.

Drawings

FIG. 1 is a schematic diagram of a stress testing device according to the present utility model;

FIG. 2 is a schematic top view of a stress testing ring of the present utility model;

FIG. 3 is a schematic side view of a stress testing ring of the present utility model;

FIG. 4 is a schematic structural view of a strain gage of the present utility model;

FIG. 5 is a schematic view of a conventional axial force meter mounting structure;

fig. 6 is a schematic view of a conventional reinforcing bar gauge.

Reference numerals:

ring body 1, strain gauge 2, perforation 3, breach 4, resistance wire 5, horizontal arrangement section 51, vertical arrangement section 52, external interface 6, stress test ring 101, stock 102, anchor 103, holder 104, mounting 105, axial force meter 106.

Detailed Description

In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In particular, when an element is referred to as being "fixed" or "disposed on" another element in embodiments of the present utility model, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "are used to refer to the terms" length "," width "," upper "," lower "," front "," rear "," left "," right "," vertical "," and "lower".

The orientation or positional relationship indicated by horizontal "," top "," bottom "," inner "," outer ", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.

According to a first embodiment of the present utility model, there is provided a stress testing device for an anchoring structure:

the utility model provides an anchor structure's stress test ring, includes ring body 1 and foil gage 2, and ring body 1's center department is equipped with the perforation 3 that runs through whole ring body 1, is equipped with a plurality of breach 4 on ring body 1's the lateral wall, and foil gage 2 card is established in breach 4, and both sides contact about foil gage 2 and breach 4 are provided with resistance wire 5 in the foil gage 2, and resistance wire 5 is equipped with external connection mouth 6.

It should be noted that, the ring body 1 is caused by steel, when the two end faces are stressed, a certain stress change is provided in the ring body 1, a perforation 3 is provided at the center of the ring body 1, so that the anchoring structure can pass through, the ring body 1 is conveniently sleeved on the anchoring structure, a notch 4 is provided on the side wall of the ring body 1, the strain gauge 2 is clamped in the notch 4, so that the strain gauge 2 is equivalent to being directly embedded in the ring body 1, the upper and lower sides of the strain gauge 2 are contacted with the upper and lower sides of the notch 4, when the ring body 1 is stressed, the strain gauge 2 can timely sense the pressure of the upper and lower sides of the ring body 1, the strain gauge 2 senses the pressure, then the internal resistance wire 5 is stressed, the diameter is changed, the resistance is connected with the resistance tester by using the external interface 6, and the change of the resistance is monitored, so that the anchoring force change of the anchor rod 102 is estimated.

As a preferred embodiment, the strain gauge 2 is symmetrically arranged on the side edge of the ring body 1, the strain gauge is a square plane sheet body, and the strain gauge is arranged in the middle of the axial direction of the ring body 1.

It should be noted that, the strain gauge sets up and is the stress condition of symmetry setting on ring body 1 in each position of test ring body 1 of being convenient for, reduce because the interference that external factor produced through the monitoring of a plurality of test points, the strain gauge sets up square be convenient for block establish in ring body 1 lateral wall, the strain gauge of square lamellar body is convenient for with ring body 1 atress conduction to resistance wire 5 as far as, both sides limit is the straight line about the strain gauge, can even contact breach 4 border, evenly atress in same horizontal position of ring body 1, set up in the centre of ring body 1 axis direction and make the upper and lower both sides atress of strain gauge 2 even, increase test accuracy.

As a preferred embodiment, the direction of arrangement of the resistance wires 5 in the strain gauge is perpendicular or parallel to the axis of the ring body 1.

It should be noted that, because the ring body 1 receives pressure through the upper and lower end surfaces and transmits pressure to the strain gauge, when the resistance wire 5 of the strain gauge is perpendicular to the axis of the ring body 1, after the stress applied to the anchoring structure changes, the stress applied to the ring body 1 changes, the diameter of the resistance wire 5 becomes smaller along with the increase of the stress, and when the resistance wire 5 is parallel to the axis of the ring body 1, the diameter of the resistance wire 5 increases along with the increase of the stress applied to the two ends of the ring body 1, thereby affecting the resistance, so the resistance wire 5 can be affected by the acting force to the greatest extent by being perpendicular or parallel.

As a preferred embodiment, the resistance wire 5 in the strain gauge 2 comprises a horizontal arrangement section 51 and a vertical arrangement section 52, the horizontal arrangement section 51 is connected with the vertical arrangement section 52 in series, and the external interfaces 6 are respectively arranged at the two ends of the resistance wire 5 and at the connection positions of the horizontal arrangement section 51 and the vertical arrangement section 52.

It should be noted that, when the upper and lower both sides of ring body 1 are stressed, foil gage 2 also receives the clamping force from ring body 1 both ends, through setting up the resistance wire series connection that section 51 was arranged to the level and section 52 was arranged perpendicularly, can add the stress variation of accurate test anchor structure, increase test accuracy, all be equipped with external connection 6 in the both ends of resistance wire 5, the section 51 is arranged to the level and the section 52 junction of arranging perpendicularly and be convenient for detect the stress variation at both ends respectively moreover, reduce the error that different setting methods brought, further increase test accuracy.

As a preferred embodiment, the thickness of the ring body 1 is 25-35mm, the inner diameter of the ring body 1 is 40-60mm, and the outer diameter of the ring body 1 is 100-150mm.

It should be noted that, the required thickness of stress test ring 101 that this application set up is less, for the volume of whole test ring that has reduced greatly of prior art, the thickness of ring body 1 is little, and the strain gage 2 that sets up in the middle of ring body 1 senses changes more accurately, increases the accuracy of stress test on the one hand, reduces the consumptive material in addition, and the setting of internal diameter and external diameter is convenient for make perforation 3 in the ring body 1 penetrate anchor structure, and both ends face has sufficient atress area about the ring body 1 simultaneously, makes the balanced of each direction atress of whole ring body 1.

In a preferred embodiment, the inner side surface of the notch 4 is a plane, the depth of the inner side surface of the notch 4 gradually decreases from the middle to the two sides, and the connecting line of the outer interface 6 extends from the two sides of the notch 4.

It should be noted that, the inner side of the notch is set to be a plane for facilitating the installation of the strain gauge, and the connection line of the external interface 6 is arranged to extend from two sides, so that the connection line does not need to be bent, directly extends from deep to shallow, and does not affect the stress of two end sides of the ring body 1 from the horizontal side, thereby reducing the interference of the connection line to the test.

In a second embodiment, a stress testing device of an anchoring structure comprises the stress testing ring 101, an anchor rod 102, an anchor 103 and a clamping piece 104, wherein a sleeve is arranged outside an anchoring section of the anchor rod 102, the anchor 103 is arranged at a joint of a free section and an anchoring section of the anchor rod 102, the anchor rod 102 is provided with a certain drawing force and is fixedly locked through the anchor 103, the free section of the anchor rod 102 penetrates through a through hole 3 of the stress testing ring 101, and the clamping piece 104 and the anchor 103 clamp and fix the stress testing ring 101.

It should be noted that, when the anchor rod 102 is anchored in the soil body, a certain drawing force is preset for the anchor rod 102 to achieve the anchoring effect, after the drawing force is set, the anchor 103 is used for fixing, so that the anchor rod 102 is subjected to a certain stress, then the stress test ring 101 is clamped and fixed on the anchor rod 102 through the clamping piece 104 and the anchor 103 side, when the soil body loosens or collapses, the stress applied to the anchor rod 102 changes, the clamping force applied to the stress test ring 101 by the clamping pieces 104 at two ends and the anchor 103 changes, so that the stress of the strain gauge changes, the stressed diameter of the resistance wire 5 changes, and the size of the resistance also changes.

As a preferred embodiment, the anchoring member 103 is a pad plate provided with a screw hole, the anchoring member 103 is in threaded connection with the free section of the anchor rod 102, the surface of the anchoring member 103 contacting the stress testing ring 101 is a plane, and the area of the anchoring member 103 is larger than the area of one end surface of the stress testing ring 101.

It should be noted that, the screw hole provided on the anchor 103 may enable the anchor 103 to be directly fixed on the anchor rod 102, or other auxiliary devices may be used to fix the anchor 103 at the joint of the free section and the anchor section of the anchor rod 102, where the surface of the anchor 103 contacting the stress testing ring 101 is a plane, so as to better clamp the stress testing ring 101, increase the stress area, and conduct the stress variation to the stress testing ring 101 to the greatest extent, where the area of the anchor 103 is larger than that of one end surface of the stress testing ring 101, so that the end surface of the stress testing ring 101 is completely contacted with the anchor 103, and the stress balance of the stress testing ring 101 is ensured.

As a preferred embodiment, the clamping member 104 is a fixed plate provided with a threaded hole, the clamping member 104 is in threaded connection with the free section of the anchor rod 102, and the area of the bottom surface of the clamping member 104 is larger than the area of one end surface of the stress testing ring 101.

It should be noted that, the threaded hole is provided on the clamping member 104, so that the clamping member 104 may be directly fixed on the anchor rod 102, and the area of the bottom surface of the clamping member 104 is larger than that of one end surface of the stress testing ring 101, so that the end surface of the stress testing ring 101 may be completely contacted with the anchor 103, thereby ensuring the stress balance of the stress testing ring 101.

As a preferred embodiment, the anchor rod 102 further comprises a fixing member 105, wherein the fixing member 105 is arranged at the free section of the anchor rod 102 and is connected with the clamping member 104 for fixing the clamping member 104 and the stress testing ring 101 at the free section of the anchor rod 102.

It should be noted that, the fixing member 105 is provided to further strengthen the positions of the clamping member 104 and the stress testing ring 101, so that the stress testing ring 101 is stably clamped between the anchor 103 and the clamping member 104, the whole device is more sensitive to stress variation on the anchor rod 102, and the accuracy of the test is improved

Example 1

The utility model provides an anchor structure's stress test ring, includes ring body 1 and foil gage 2, and the center department of ring body 1 is equipped with the perforation 3 that runs through whole ring body 1, is equipped with a plurality of breach 4 on the lateral wall of ring body 1, and foil gage 2 card is established in breach 4, and the upper and lower both sides and the breach 4 upper and lower both sides contact of foil gage 2 are provided with resistance wire 5 in the foil gage 2, and resistance wire 5 is equipped with external connection mouth 6

Example 2

On the basis of the embodiment 1, the strain gauges are symmetrically arranged on the side edge of the ring body 1, the strain gauges are square plane sheet bodies, and the strain gauges are arranged in the middle of the axial direction of the ring body 1.

Example 3

On the basis of the embodiment 2, the arrangement direction of the resistance wires 5 in the strain gauge is perpendicular to or parallel with the axis of the ring body 1

Example 4

On the basis of embodiment 2, the resistance wire 5 in the strain gauge 2 comprises a horizontal arrangement section 51 and a vertical arrangement section 52, the horizontal arrangement section 51 is connected with the vertical arrangement section 52 in series, and the outer interfaces 6 are respectively arranged at the two ends of the resistance wire 5 and at the joint of the horizontal arrangement section 51 and the vertical arrangement section 52.

Example 5

Based on the embodiment 1, the thickness of the ring body 1 is 25-35mm, the inner diameter of the ring body 1 is 40-60mm, and the outer diameter of the ring body 1 is 100-150mm.

Example 6

On the basis of the embodiment 1, the inner side surface of the notch 4 is a plane, the depth of the inner side surface of the notch 4 gradually decreases from the middle to the two sides, and the connecting line of the outer interface 6 extends from the two sides of the notch 4.

Example 7

The stress testing device of the anchoring structure comprises a stress testing ring 101, an anchor rod 102, an anchor 103 and a clamping piece 104 in the embodiment 1, wherein a sleeve is arranged outside an anchoring section of the anchor rod 102, the anchor 103 is arranged at a joint of a free section and an anchoring section of the anchor rod 102, the anchor rod 102 is provided with a certain drawing force and is fixedly locked through the anchor 103, the free section of the anchor rod 102 penetrates through a perforation 3 of the stress testing ring 101, and the clamping piece 104 and the anchor 103 clamp and fix the stress testing ring 101.

Example 8

Based on embodiment 7, the anchoring piece 103 is a backing plate with a screw hole, the anchoring piece 103 is in threaded connection with the free section of the anchor rod 102, the contact surface of the anchoring piece 103 and the stress test ring 101 is a plane, and the area of the anchoring piece 103 is larger than that of one end surface of the stress test ring 101

Example 9

Based on embodiment 7, the clamping member 104 is a fixing plate provided with a threaded hole, the clamping member 104 is in threaded connection with the free section of the anchor rod 102, and the area of the bottom surface of the clamping member 104 is larger than the area of one end surface of the stress testing ring 101.

Example 10

On the basis of embodiment 7, the anchor rod 102 further comprises a fixing piece 105, wherein the fixing piece 105 is arranged on the free section of the anchor rod 102 and connected with the clamping piece 104, and is used for fixing the clamping piece 104 and the stress test ring 101 on the free section of the anchor rod 102.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a stress test ring of anchor structure, its characterized in that, including ring body (1) and foil gage (2), the center department of ring body (1) is equipped with perforation (3) that run through whole ring body (1), be equipped with a plurality of breach (4) on the lateral wall of ring body (1), foil gage (2) card is established in breach (4), both sides about foil gage (2) with both sides contact about breach (4), be provided with resistance wire (5) in foil gage (2), resistance wire (5) are equipped with external connection mouth (6).

2. The stress testing ring of an anchoring structure according to claim 1, wherein the strain gauge is symmetrically arranged on the side edge of the ring body (1), the strain gauge is a square plane sheet body, and the strain gauge is arranged in the middle of the axis direction of the ring body (1).

3. Stress testing ring of an anchoring structure according to claim 2, characterized in that the direction of arrangement of the resistance wires (5) in the strain gauge is perpendicular or parallel to the axis of the ring body (1).

4. The stress test ring of an anchoring structure according to claim 2, wherein the resistance wire (5) in the strain gauge (2) comprises a horizontal arrangement section (51) and a vertical arrangement section (52), the horizontal arrangement section (51) is connected with the vertical arrangement section (52) in series, and external interfaces (6) are arranged at the joints of the two ends of the resistance wire (5), the horizontal arrangement section (51) and the vertical arrangement section (52).

5. The stress testing ring of an anchoring structure according to claim 1, wherein the thickness of the ring body (1) is 25-35mm, the inner diameter of the ring body (1) is 40-60mm, and the outer diameter of the ring body (1) is 100-150mm.

6. The stress testing ring of an anchoring structure according to claim 1, wherein the inner side surface of the notch (4) is a plane, the depth of the inner side surface of the notch (4) gradually decreases from the middle to the two sides, and the connecting line of the outer interface (6) extends from the two sides of the notch (4).

7. Stress testing device of an anchoring structure, characterized by comprising the stress testing ring (101) according to any one of claims 1-6, further comprising an anchor rod (102), an anchor (103) and a clamping piece (104), wherein a sleeve is arranged outside an anchoring section of the anchor rod (102), the anchor (103) is arranged at a joint of a free section and an anchoring section of the anchor rod (102), the anchor rod (102) is provided with a certain pulling force and is fixedly locked by the anchor (103), the free section of the anchor rod (102) penetrates through a perforation (3) of the stress testing ring (101), and the clamping piece (104) and the anchor (103) clamp and fix the stress testing ring (101).

8. The device for testing the stress of the anchoring structure according to claim 7, wherein the anchoring piece (103) is a backing plate provided with a screw hole, the anchoring piece (103) is in threaded connection with the free section of the anchor rod (102), one surface of the anchoring piece (103) contacted with the stress testing ring (101) is a plane, and the area of the anchoring piece (103) is larger than the area of one end surface of the stress testing ring (101).

9. The device for testing the stress of the anchoring structure according to claim 7, wherein the clamping piece (104) is a fixed plate provided with a threaded hole, the clamping piece (104) is in threaded connection with the free section of the anchor rod (102), and the area of the bottom surface of the clamping piece (104) is larger than the area of one end surface of the stress testing ring (101).

10. The device for testing the stress of the anchoring structure according to claim 7, further comprising a fixing member (105), wherein the fixing member (105) is arranged on the free section of the anchor rod (102) and is connected with the clamping member (104) for fixing the clamping member (104) and the stress testing ring (101) on the free section of the anchor rod (102).

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