A thermometer-type anchoring component gripping force measuring device

Abstract

This utility model relates to the field of slope reinforcement technology, specifically to a thermometer-type anchorage component gripping force measuring device. It includes a pressure-sensing jacket, a fiberglass tube, and an indicating liquid. The fiberglass tube containing the indicating liquid is housed inside the pressure-sensing jacket. When subjected to circumferential pressure, the pressure-sensing jacket deforms, compressing the fiberglass tube and causing the indicating liquid to rise within it. The fiberglass tube has graduations indicating the pressure value based on the rising height of the indicating liquid. An adhesive layer is provided on the back of the pressure-sensing jacket, which is then adhered to the surface of the anchorage component or the inner wall of a drilled hole in the anchorage component via the adhesive layer. This device converts the circumferential gripping force into the form of the vertical rise height of the indicating liquid within the fiberglass tube, displaying the circumferential gripping force inside the anchor body with a visual scale. This refines empirical values, providing strong data support for the design optimization of anchorage structures after long-term data accumulation.

Description

Technical Field

[0001] This utility model relates to the field of slope reinforcement technology, specifically to a thermometer-type anchoring component gripping force measuring device. Background Technology

[0002] In engineering fields such as slope reinforcement, foundation pit support, and temporary tunnel lining support, anchoring components (such as anchor rods and anchor cables) play a crucial role. The bond force between the anchoring component and the surrounding medium (such as rock, soil, and mortar) is a key indicator for measuring the anchoring effect, and its magnitude directly affects the stability and safety of the anchoring structure.

[0003] However, in practical engineering projects, it is currently difficult to quantitatively survey and measure the bond strength between the soil / rock mass and the anchor reinforcement, and between the anchor and the mortar. When determining the anchor length (especially the anchorage length), it is often necessary to rely on empirical values ​​of the ultimate bond strength between the soil / rock mass and the anchor reinforcement, and the bond strength between the steel reinforcement and the mortar. This experience-based method has significant limitations, lacking specificity and applicability. Due to the lack of accurate bond strength data, a large pull-out safety factor is usually used in the calculations to ensure project safety. However, this can lead to an overestimation of the anchorage length, resulting in an unreasonable anchorage cost and increased construction time.

[0004] Quantitatively measuring anchor bolt bond force and accumulating a large amount of regional contact data between soil and rock masses and anchor bolts is of paramount importance for guiding and optimizing anchor bolt calculation theory. Accurately obtaining bond force data allows for optimization of anchor bolt design, improving the rationality and economy of anchor bolt installation, and avoiding unnecessary resource waste.

[0005] Therefore, developing a device that can accurately measure the gripping force of anchoring components is necessary for the refined development of engineering and the continuous improvement of anchoring technology, and has important theoretical and practical significance. Summary of the Invention

[0006] To address the aforementioned issues, this invention provides a thermometer-type anchoring component gripping force measuring device. This device utilizes the deformation of the material under pressure to convert the circumferential gripping force between the soil and mortar, and between the mortar and the anchor rod, into the vertical rise of the indicating liquid within the glass fiber tube. The circumferential gripping force value is displayed on a scale outside the slope, providing a visual scale display of the circumferential gripping force inside the anchor rod. This refines empirical values ​​and provides strong data support and optimization basis for the design of anchor rod structures.

[0007] The technical solution of this utility model is as follows:

[0008] A thermometer-type anchoring component gripping force measuring device includes a pressure sensing jacket, a glass fiber tube, and an indicating liquid. The glass fiber tube containing the indicating liquid is disposed inside the pressure sensing jacket. When the pressure sensing jacket is subjected to circumferential pressure, it deforms, squeezing the glass fiber tube and driving the indicating liquid to rise inside the glass fiber tube. The glass fiber tube is provided with scale lines indicating the pressure value according to the rising height of the indicating liquid. An adhesive layer is provided on the back of the pressure sensing jacket, and the pressure sensing jacket is attached to the surface of the anchoring component or the inner wall of the drilled hole of the anchoring component through the adhesive layer.

[0009] Specifically, the anchoring component is an anchor rod or an anchor cable.

[0010] Furthermore, the pressure-sensing jacket is made of a wear-resistant and corrosion-resistant material that can sense circumferential pressure and produce radial elastic deformation.

[0011] Specifically, the pressure-sensing jacket is made of polyurethane elastomer or TPE elastomer.

[0012] Furthermore, the indicator liquid has a color that is clearly distinguishable from the background color and environment of the glass fiber tube, and the indicator liquid can rise responsively when the glass fiber tube is deformed by pressure, and can maintain the corresponding liquid level height after the pressure stabilizes.

[0013] Furthermore, the scale lines are set on the part of the thermometer-type anchor component that is exposed on the reinforced slope after the gripping force measuring device is installed.

[0014] Furthermore, the scale lines are calibrated such that the pressure values ​​read on them correspond to the circumferential pressure values ​​at the measurement point.

[0015] Furthermore, the adhesive layer is a self-adhesive layer that facilitates the removal of the film.

[0016] Furthermore, the portion of the thermometer-type anchoring component gripping force measuring device exposed on the reinforced slope after installation is equipped with a protective device.

[0017] Specifically, the protective device is a protective cover.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model discloses a thermometer-type anchoring component gripping force measuring device, which can quantitatively measure the gripping force. Through the combination of a pressure sensing jacket, a glass fiber tube and an indicating liquid, it realizes the quantitative measurement of the gripping force of the anchoring component, solves the problem of difficulty in quantitatively surveying and measuring the gripping force in current engineering, and provides accurate data support for the design and construction of anchoring structures.

[0020] 2. The present invention discloses a thermometer-type anchoring component gripping force measuring device. In this thermometer-type anchoring component gripping force measuring device, the pressure sensing jacket deforms when subjected to circumferential pressure, squeezing the glass fiber tube and driving the indicating liquid to rise. The pressure value can be read intuitively through the scale lines on the glass fiber tube. This measurement method has high accuracy and reliability and can accurately reflect the magnitude of the gripping force between the anchoring component and the surrounding medium.

[0021] 3. The present invention discloses a thermometer-type anchoring component gripping force measuring device. This thermometer-type anchoring component gripping force measuring device is applicable to anchoring components such as anchor rods or anchor cables. It can be pasted on the surface of the anchoring component or the inner wall of the anchoring component borehole, and has wide applicability. It has broad application prospects in engineering fields such as slope reinforcement, foundation pit support, and temporary tunnel lining support.

[0022] 4. The present invention discloses a thermometer-type anchoring component gripping force measuring device. The scale line of the thermometer-type anchoring component gripping force measuring device is set on the part of the device exposed on the reinforced slope after installation, which facilitates the observation and recording of pressure values. At the same time, the indicating liquid has a color that is clearly distinguishable from the background color of the glass fiber tube and the environment, making the observation more intuitive and accurate.

[0023] 5. The present invention discloses a thermometer-type anchoring component gripping force measuring device. After installation, the part of the thermometer-type anchoring component gripping force measuring device exposed on the reinforced slope is equipped with a protective device (such as a protective cover) to protect the device from interference and damage from the external environment and ensure the accuracy and reliability of the measurement. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a thermometer-type anchoring component gripping force measuring device according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a thermometer-type anchoring component gripping force measuring device during installation and use, according to an embodiment of the present utility model.

[0026] The components represented by the various reference numerals in the diagram are:

[0027] This utility model includes: 1. Slope reinforcement, 2. Mortar reinforcement, 3. Soil and rock mass, 4. Grip force measuring instrument, 5. Pressure sensing jacket, 6. Fiberglass tube, 7. Indicating liquid, 8. Scale line, and 9. Protective cover. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0029] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0030] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0031] In slope reinforcement, foundation pit support, and temporary tunnel lining support projects, accurately determining the bond force between anchor bolts / cables and the surrounding medium is crucial for the safety and economy of the project. However, currently, it is difficult to quantitatively survey and measure the bond force between the soil / rock mass and the anchor bolt reinforcement body, and between the anchor bolt and the mortar. This results in a lack of precise basis for determining the anchor bolt length, especially the anchorage section length, often relying on empirical values. This not only lacks specificity and applicability but may also lead to unreasonable anchor bolt economics.

[0032] Thermometer-type anchoring component grip force measuring device (i.e.) Figure 2 The emergence of the gripping force measuring instrument 4 shown in the figure effectively solves this problem. It converts the circumferential gripping force between the anchor reinforcement body and the surrounding rock and soil, and between the anchor and the mortar, into the vertical rise of the deformation indicator liquid. It also displays and measures the anchor gripping force through a pressure scale, realizing the visualization measurement of the concealed circumferential gripping force inside the anchor body, and providing strong data support for the design of anchor structures.

[0033] like Figure 1As shown, the grip strength measuring instrument 4 mainly consists of a pressure sensing jacket 5, a glass fiber tube 6, an indicating liquid 7, a scale line 8, and a protective cover 9.

[0034] The pressure-sensing jacket 5 is made of a wear-resistant and corrosion-resistant material that can sense circumferential pressure and produce radial deformation, such as polyurethane elastomer or TPE elastomer. These materials have good wear resistance and corrosion resistance and can work stably for a long time in harsh engineering environments. At the same time, they are pressure-sensitive and can produce uniform and effective elastic deformation, which can uniformly transmit circumferential pressure to the internal glass fiber tube 6.

[0035] When the anchor bolt or anchor cable is subjected to circumferential pressure, the pressure sensing jacket 5 will be squeezed and deformed, further squeezing the internal glass fiber tube 6, thereby driving the indicator liquid 7 to rise inside the glass fiber tube 6. The degree of deformation of the pressure sensing jacket 5 is proportional to the circumferential pressure it is subjected to. Therefore, by measuring the rising height of the indicator liquid 7, the magnitude of the circumferential pressure can be indirectly obtained.

[0036] The back of the pressure sensing jacket 5 is provided with an adhesive layer, which is self-adhesive. During installation, simply peel off the self-adhesive release layer to attach the gripping force measuring gauge 4 to the surface of the anchoring component or the designated measuring position on the inner wall of the drilled hole of the anchoring component. Installation is convenient and quick.

[0037] The fiberglass tube 6 should have certain elasticity and pressure resistance, and be able to undergo controllable deformation without breaking under the pressure of the pressure sensing jacket 5, thereby reducing the internal volume and driving the indicator liquid 7 to rise. The inside of the tube contains the indicator liquid 7. The inner wall of the fiberglass tube 6 is smooth, which can ensure that the indicator liquid 7 is not obstructed during the rising process.

[0038] When the pressure sensing jacket 5 deforms and squeezes the glass fiber tube 6, the volume of the glass fiber tube 6 changes, thereby driving the indicating liquid 7 to rise inside the tube. The degree of deformation of the glass fiber tube 6 is related to the degree of deformation of the pressure sensing jacket 5, and thus to the circumferential pressure. By setting a scale line 8 on the glass fiber tube 6, the pressure value can be indicated according to the rising height of the indicating liquid 7.

[0039] The indicator liquid 7 has a color that is clearly distinguishable from the background and environment of the glass fiber tube 6, so that the observer can accurately read the liquid level. At the same time, the indicator liquid 7 can rise in response when the glass fiber tube 6 is deformed by pressure, and can maintain the corresponding liquid level after the pressure stabilizes, ensuring the accuracy of the measurement results.

[0040] When the glass fiber tube 6 is deformed by the pressure sensing jacket 5, the indicator liquid 7 inside the tube will be squeezed and rise. The rise height of the indicator liquid 7 is proportional to the pressure. The corresponding pressure value can be obtained by reading the scale line 8 on the glass fiber tube 6.

[0041] The scale line 8 is set on the part of the thermometer-type anchor component gripping force measuring instrument 4 that is exposed on the reinforced slope 1 after installation. Since the observers are observing from the outside, the scale line 8 should be measured and marked from the slope.

[0042] The scale line 8 is calibrated so that the pressure value read on it corresponds to the pressure value transmitted from the circumferential pressure at the measurement point to the observation position of the scale line 8. During the manufacturing process of the grip force measuring instrument 4, it is necessary to calibrate the pressure value corresponding to each unit of deformation through indoor tests, so as to adjust and calibrate the correspondence between the rising scale of the indicator liquid in the glass fiber tube 6 and the pressure change, and ensure the accuracy of the scale line 8.

[0043] To ensure the clarity of the scale line 8 and the safety of the exposed part, a protective cover 9 should be installed to cover the exposed part after each measurement. The protective cover 9 can prevent external factors from damaging the grip force measuring instrument 4, such as rain erosion or object collisions. It can also protect the scale line 8 from wear and tear, ensuring the long-term accuracy of the measurement results.

[0044] The construction process of this thermometer-type anchor force measuring device is as follows:

[0045] (I) Indoor test calibration

[0046] Before the grip strength measuring instrument 4 is put into use, it needs to be calibrated in an indoor laboratory. By simulating different circumferential pressures, the deformation degree of the pressure sensing jacket 5 and the rising height of the indicating liquid 7 in the glass fiber tube 6 are measured to establish the correspondence between the deformation degree, the rising height of the indicating liquid and the circumferential pressure. Based on the calibration results, the correspondence between the rising scale of the indicating liquid in the glass fiber tube 6 and the pressure change is adjusted and calibrated to ensure the accuracy of the scale line 8. After calibration, a qualified label is affixed to indicate that the grip strength measuring instrument 4 can be put into use.

[0047] (II) On-site installation

[0048] Drilling and installation: Drill and install anchor bolts according to design requirements, ensuring that the diameter, depth and inclination of the holes meet the design standards.

[0049] Attaching the gripping force measuring gauge: After the anchor bolt drilling is completed, peel off the self-adhesive release layer on the back of the gripping force measuring gauge 4, and attach the gripping force measuring gauge 4 to the designated measurement positions on the anchor bolt and the inner wall of the borehole. The gripping force measuring gauge 4 should be attached flat and tightly fitted to the anchor bolt and the inner wall of the borehole to avoid gaps. When there are multiple measurement positions, multiple gripping force measuring gauges 4 can be staggered within a 360° range to comprehensively understand the gripping force at different positions of the anchor bolt.

[0050] Pour cement mortar: Pour cement mortar according to the original design. During the pouring process, pay attention to protecting the gripping force measuring instrument 4 and avoid direct impact of mortar on the gripping force measuring instrument 4, which may cause damage or displacement of the gripping force measuring instrument 4.

[0051] (III) Measurement and Recording

[0052] During the pouring process and subsequent use, the indicator liquid will rise along the inner wall of the glass fiber tube 6 to the scale line 8 and stabilize at the corresponding pressure scale. Observers can observe the scale line 8 outside the reinforced slope 1 and read the bond force between the mortar and the anchor rod and the bond force between the surrounding soil and the mortar reinforcement at the measurement point. After each measurement, the exposed part of the bond force measuring instrument 4 is covered with a protective cover 9 to protect the bond force measuring instrument 4 and the scale line 8.

[0053] After installation, the grip strength meter 4 is as follows: Figure 2 As shown, after mortar is injected into the anchor bolt borehole, the circumferential pressure of the mortar reinforcement 2 on the anchor bolt body and the soil and rock mass 3 on the mortar reinforcement 2 rises due to the deformation of the pressure sensing jacket 5 squeezing the indicator liquid 7 in the glass fiber tube 6. The scale line 8 of the liquid indicator outside the reinforced slope surface 1 will show their respective gripping forces. In this way, the circumferential contact pressure and gripping force between the anchor bolt body and the mortar reinforcement, and between the mortar reinforcement and the soil and rock mass, are measured by the scale indicated by the indicator liquid.

[0054] (iv) Handling Abnormal Situations

[0055] When the indicator fluid 7 shows an abnormal decrease during the use of the anchor bolt, the condition of the anchor bolt should be checked promptly. This could be due to changes in the bond force between the anchor bolt and the mortar, or between the mortar and the soil / rock mass, causing a decrease in pressure on the bond force measuring instrument 4 and a drop in the indicator fluid 7. Alternatively, it could be a malfunction of the bond force measuring instrument 4 itself, such as a broken fiberglass tube 6 or leakage of the indicator fluid 7. Timely inspection and handling can ensure the safe use of the anchor bolt.

[0056] This thermometer-type anchoring component gripping force measuring device has the advantages of convenient on-site operation and accurate and reliable measurement results. It can be widely used in slope reinforcement engineering, foundation pit support, tunnel temporary lining support engineering and other fields. By measuring the gripping force of anchor rods and anchor cables and accumulating a large amount of contact data between rock and soil and anchor rods, it can provide a scientific basis for improving and optimizing anchor rod settings, realizing the rationality and economy of anchor rod settings, and has broad prospects for promotion and application.

[0057] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A thermometer-type anchoring component gripping force measuring device, characterized in that, The device includes a pressure sensing jacket (5), a fiberglass tube (6), and an indicator liquid (7). The fiberglass tube (6) containing the indicator liquid (7) is installed inside the pressure sensing jacket (5). When the pressure sensing jacket (5) is subjected to circumferential pressure, it deforms, squeezing the fiberglass tube (6) and driving the indicator liquid (7) to rise inside the fiberglass tube (6). The fiberglass tube (6) is provided with a scale line (8) indicating the pressure value according to the rising height of the indicator liquid (7). An adhesive layer is provided on the back of the pressure sensing jacket (5). The pressure sensing jacket (5) is attached to the surface of the anchoring member or the inner wall of the borehole of the anchoring member through the adhesive layer.

2. The thermometer-type anchoring component gripping force measuring device as described in claim 1, characterized in that, The anchoring component is an anchor rod or an anchor cable.

3. The thermometer-type anchoring component gripping force measuring device as described in claim 1, characterized in that, The pressure-sensing jacket (5) is made of a wear-resistant, corrosion-resistant material that can sense circumferential pressure and produce radial elastic deformation.

4. The thermometer-type anchoring component gripping force measuring device as described in claim 3, characterized in that, The pressure-sensing jacket (5) is made of polyurethane elastomer or TPE elastomer.

5. The thermometer-type anchoring component gripping force measuring device as described in claim 1, characterized in that, The indicator liquid (7) has a color that is highly contrasting with the background color and environment of the glass fiber tube (6) and is clearly distinguishable. The indicator liquid (7) can rise responsively when the glass fiber tube (6) is deformed by pressure, and can maintain the corresponding liquid level height after the pressure stabilizes.

6. The thermometer-type anchoring component gripping force measuring device as described in claim 1, characterized in that, The scale line (8) is set on the part of the thermometer-type anchor component gripping force measuring device that is exposed on the reinforced slope (1) after installation.

7. The thermometer-type anchoring component gripping force measuring device as described in claim 6, characterized in that, The scale line (8) is calibrated such that the pressure value read on it corresponds to the pressure value of the circumferential pressure at the measurement point.

8. The thermometer-type anchoring component gripping force measuring device as described in claim 1, characterized in that, The adhesive layer is a self-adhesive material that is easy to peel off after use.

9. A thermometer-type anchoring component gripping force measuring device as described in claim 1, characterized in that, The part of the thermometer-type anchor component gripping force measuring device exposed on the reinforced slope surface (1) after installation is equipped with a protective device.

10. A thermometer-type anchoring component gripping force measuring device as described in claim 9, characterized in that, The protective device is a protective cover (9).

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