Bridge reinforcing material bonding interface strength detection device

Abstract

The embodiment of the utility model relates to the technical field of engineering, and discloses a bridge reinforcing material bonding interface strength detection device which is provided with a stretching support, a stretching rod, a tension sensor, a first fixing part and a second fixing part, the stretching support is fixedly arranged on a base, and the stretching rod is fixedly arranged at the end, away from the base, of the stretching support; the stretching rod can stretch out and draw back relative to the base. The end, close to the base, of the stretching rod is connected with the first fixing part through a tension sensor. The stretching rod can drive the first fixing part to stretch out and draw back through the tension sensor. A second fixing part is fixedly arranged at the position, opposite to the first fixing part, of the base; the first fixing part and the second fixing part are respectively used for fixedly connecting one end and the other end of the test piece. The device has the advantages of being convenient to carry, easy to operate, rapid in detection, accurate in result and the like, the strength of the bonding interface of the bridge reinforcing material and the old concrete can be scientifically and accurately detected, and the safety of a bridge structure is improved.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of highway engineering, and particularly to a device for detecting the bonding interface strength of bridge reinforcement materials. Background Art

[0002] Concrete bridges are an important part of highway traffic. However, with the extension of the service life and the increase in traffic volume leading to an increase in the structural load of the bridge, the bearing capacity of some bridges is difficult to meet the use requirements. Therefore, it is particularly important to reinforce and transform existing bridges with insufficient bearing capacity and deteriorated durability. However, the bearing capacity of bridge structures reinforced with ordinary concrete often decreases again after a short period due to insufficient durability of the concrete itself.

[0003] In recent years, ultra-high performance concrete (UHPC), as an emerging material, has broad application prospects in the field of bridge structure reinforcement due to its excellent properties such as ultra-high strength, high durability, and high density. However, due to the differences in material properties between UHPC and ordinary concrete and different curing ages, stress concentration and interface failure may occur. The bonding reliability of the UHPC and ordinary concrete interface will directly affect the crack resistance, durability, and ultimate bearing capacity of bridge structural components. Therefore, the reinforcement performance of bridge structures depends on the bonding performance between UHPC and concrete interfaces.

[0004] The inventors of the present application found in their research that currently, there is a lack of equipment that can directly detect the bonding interface strength between bridge reinforcement materials and old concrete. Therefore, it is particularly important to develop a device for detecting the bonding interface strength of bridge reinforcement materials that is scientific and convenient. Summary of the Utility Model

[0005] In view of the above problems, the embodiments of the present utility model provide a device for detecting the bonding interface strength of bridge reinforcement materials to solve the above technical problems existing in the prior art.

[0006] According to one aspect of the embodiments of the present utility model, there is provided a device for detecting the bonding interface strength of bridge reinforcement materials for detecting bridge specimens. The device includes a base, a stretching bracket, a stretching rod, a tension sensor, a first fixing part, and a second fixing part.

[0007] The stretching bracket is fixedly arranged on the base, and a stretching rod is fixedly arranged at one end of the stretching bracket away from the base. The stretching rod can perform telescopic movement relative to the base.

[0008] One end of the stretching rod close to the base is connected to the first fixing part through the tension sensor, and the stretching rod can drive the first fixing part to perform telescopic movement through the tension sensor.

[0009] A second fixing portion is fixedly arranged at a position on the base opposite to the first fixing portion;

[0010] The first fixing portion and the second fixing portion are respectively used for fixedly connecting one end and the other end of the bridge specimen;

[0011] When the stretching rod moves telescopically, the stretching rod drives the first fixing portion to stretch one end of the bridge specimen through the stretching sensor, and the tensile sensor is used for detecting the tensile force of the bonding interface of the reinforcing material of the bridge specimen.

[0012] In some other embodiments, a universal joint is included; one end of the universal joint is connected to the tensile sensor, and the other end is connected to the first fixing portion. The universal joint is used for adjusting the position of the first fixing portion to align the first fixing portion with the second fixing portion.

[0013] In some other embodiments, a threaded hole is provided at one end of the universal joint, and the universal joint is connected to the tensile sensor through the threaded hole;

[0014] A threaded post is provided at the other end of the universal joint, and the universal joint is fixedly connected to the first fixing portion through the threaded post.

[0015] In some other embodiments, the first fixing portion or the second fixing portion further includes a fixing sleeve;

[0016] One end of the fixing sleeve is open for sleeving the bridge specimen;

[0017] A plurality of abutting members are provided on the side wall of the fixing sleeve. The plurality of abutting members are used for abutting against one end of the bridge specimen to fix one end of the bridge specimen in the fixing sleeve.

[0018] In some other embodiments, the abutting member includes an abutting plate and an adjusting valve;

[0019] The adjusting valve penetrates through the side wall of the fixing sleeve and is used for movably arranging the abutting plate in the fixing sleeve and adjusting the distance between the abutting plate and the side wall of the fixing sleeve so that the abutting plate abuts against the bridge specimen.

[0020] In some other embodiments, the surface of the abutting plate on the side abutting against the bridge specimen is a flat structure or an arc structure to fit the surface of the bridge specimen.

[0021] In some other embodiments, the fixing sleeve is of a cuboid structure, and four abutting members are provided on the side wall of the fixing sleeve, and the abutting members are arranged in pairs.

[0022] In some other embodiments, an electronic cylinder is provided at one end of the stretching rod away from the base, and the electronic cylinder is used to drive the stretching rod to perform telescopic movement.

[0023] In some other embodiments, a smart control unit is provided on the stretching bracket. The smart control unit is electrically connected to the electronic cylinder and the tensile force sensor respectively, and is used to control the telescopic movement of the stretching rod through the electronic cylinder, and is also used to obtain the tensile force value of the tensile force sensor.

[0024] In some other embodiments, the base includes a bottom plate and leveling feet;

[0025] The second fixing part and the stretching bracket are arranged on one side of the bottom plate;

[0026] The leveling feet are arranged on the other side of the bottom plate. The leveling feet are movably connected to the bottom plate through adjusting threads and are used to place the base horizontally.

[0027] By providing a stretching bracket, a stretching rod, a tensile force sensor, a first fixing part and a second fixing part in the embodiments of the present application, the bridge test piece to be detected can be fixed and detected conveniently. This device has the advantages of being portable, easy to operate, fast in detection, accurate in results, etc., and can scientifically and accurately detect the strength of the bonding interface between the bridge reinforcement material and the old concrete, and improve the safety of the bridge structure.

[0028] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are given below. Brief Description of the Drawings

[0029] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0030] Figure 1 A perspective view of the bonding interface strength detection device for bridge reinforcement materials provided by the embodiment of the present invention is shown;

[0031] Figure 2A A schematic diagram of a fixing part provided by the embodiment of the present invention is shown;

[0032] Figure 2B A schematic diagram of another fixing part provided by the embodiment of the present invention is shown;

[0033] Figure 3 The figure shows a schematic diagram of the intelligent control unit provided by an embodiment of the present utility model.

[0034] The reference numerals in the specific embodiments are as follows:

[0035] 110. Intelligent control unit; 111. Intelligent control screen; 112. Power button; 113. Start button; 114. Emergency brake button; 115. Stretching rod up button; 116. Stretching rod down button; 120. Base; 121. Bottom plate; 122. Leveling feet; 130. Stretching rod; 140. Tensile sensor; 150. Universal joint; 160. First fixing part; 161. Fixed sleeve; 162. Contact part; 1621. Regulating valve; 1622. Contact plate; 170. Second fixing part; 180. Electric cylinder; 190. Stretching bracket; Specific embodiments

[0036] Next, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0039] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: the existence of A, the simultaneous existence of A and B, and the existence of B. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0041] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0044] In the maintenance of roads or bridges, in order to conveniently and quickly evaluate the maintenance effect of roads or bridges, it is necessary to conveniently and quickly detect the bonding performance of the bonding interfaces of different concrete materials. The embodiments of the present application propose a device for detecting the bonding interface strength of bridge reinforcement materials to solve the above technical problems. It should be noted that the device for detecting the bonding interface strength of bridge reinforcement materials proposed in the present application can not only be used to detect the bonding interface strength of bridge specimens, but also detect the bonding interfaces in other application scenarios, such as roads, guardrails, buildings, etc. The present application only takes bridge specimens as an example for illustration. As Figure 1 shown, it is the overall schematic diagram of the device for detecting the bonding interface strength of bridge reinforcement materials proposed in the embodiments of the present application.

[0045] The bridge specimen includes a bonding interface of reinforcement materials. In actual practice, when a highway or bridge fails and needs to be strengthened and renovated, for example, when it needs to be filled with ultra-high performance concrete (UHPC), in order to detect the performance of the bonding interface between different concrete materials, sampling can be used for detection. A drilling sample is taken from the bonding interface between different concrete materials through a sampling tool, that is, a bridge specimen to be detected is formed; a part of the bridge specimen is the original concrete material, and the other part is the new concrete material, such as UHPC, and between the original concrete material and the new concrete material is the bonding interface of reinforcement materials. Since this interface is the interface of different materials, the strength here is the weakest, and this interface needs to be detected.

[0046] As Figure 1 shown, the device for detecting the strength of the bonding interface of the bridge reinforcement material includes a base 120, a tensile bracket 190, a tensile rod 130, a tensile force sensor 140, a first fixing part 160, and a second fixing part 170.

[0047] In Figure 1 , the tensile bracket 190 is fixedly arranged on the base 120, and at one end of the tensile bracket 190 away from the base 120, a tensile rod 130 is fixedly arranged. The tensile rod 130 can perform telescopic movement relative to the base 120; one end of the tensile rod 130 close to the base 120 is connected to the first fixing part 160 through the tensile force sensor 140, and the tensile rod 130 can drive the first fixing part 160 to perform telescopic movement through the tensile force sensor 140; at a position on the base 120 opposite to the first fixing part 160, a second fixing part 170 is fixedly arranged; the first fixing part 160 and the second fixing part 170 are respectively used for fixedly connecting one end and the other end of the bridge specimen. When the tensile rod 130 performs telescopic movement, the tensile rod 130 drives the first fixing part 160 to stretch one end of the bridge specimen through the tensile sensor 140, and the tensile force sensor 140 is used for detecting the tensile force of the bonding interface of the reinforcement material of the bridge specimen.

[0048] Continuing to refer to Figure 1 , the base 120 has a flat plate structure. Of course, it can also be made into other structures according to needs. On one side of the base 120, a tensile bracket 190 is arranged. The tensile bracket can adopt ways such as support columns, or can also adopt a cylindrical structure, and its purpose is to provide a detection space for the detection of the bridge specimen. As Figure 1 shown, the tensile bracket 190 adopts the way of two support columns and is vertically arranged on the base 120. Of course, in practice, the way of one support column can also be adopted, as long as it can bear the weight of the bridge specimen and the test tensile force.

[0049] In Figure 1 it, one end of the stretching bracket 190 is vertically arranged with the base 120, and a stretching rod 130 is arranged at the other end. The stretching rod 130 can be directly fixed to one end of the supporting column, or a connecting beam can be arranged between the two supporting columns, and the stretching rod 130 is arranged on the connecting beam, as long as the stretching rod 130 can be arranged opposite to the base 120. After the stretching rod 130 is arranged on the stretching bracket 190, the stretching rod 130 can perform telescopic movement under the control of the equipment or under the manual operation of the operator, and its movement direction is towards the base direction, and the bridge specimen can be tightened or relaxed relative to the base.

[0050] In order to test the strength of the bonding interface in the bridge specimen, it is necessary to know the real-time tensile force value applied to the bonding interface. Therefore, in the embodiment of the present application, a tensile force sensor 140 is arranged at one end of the stretching rod 130 close to the base 120, and the real-time tensile force value applied can be obtained through this tensile force sensor.

[0051] At the other end of the tensile force sensor 140, a first fixing part 160 is arranged, and this first fixing part 160 is used to fix one end of the bridge specimen, so that when the stretching rod 130 performs telescopic movement, a tensile force can be applied to the bridge specimen. The shape and structure of the first fixing part 160 can adopt various ways, as long as the bridge specimen can be fixed during detection to prevent the bridge specimen from sliding or falling off during the test.

[0052] In order to fix the other end of the bridge specimen, a second fixing part 170 is arranged on the base 120 at a position opposite to the first fixing part 160. The second fixing part 170 and the first fixing part 160 can adopt the same structure or different structures, and can be adjusted according to the shape of the bridge specimen.

[0053] When it is necessary to detect the strength of the bridge specimen, first, the stretching rod 130 can move up and down to adjust the distance between the first fixing part 160 and the second fixing part 170 to adapt to the height of the bridge specimen to be detected, so as to fix the bridge specimen to be detected in the first fixing part 160 and the second fixing part 170.

[0054] After the bridge specimen to be detected is fixed, the detection begins. When the tension rod 130 moves upward, the tension rod 130 drives the first fixing part 160 through the tension sensor 140 to stretch one end of the bridge specimen. Since the first fixing part 160 and the second fixing part 170 have fixed the bridge specimen to be detected, at this time, the tension of the tension rod 130 mainly acts on the bonding interface in the bridge specimen. The tension sensor 140 is used to detect the tension of the bonding interface of the reinforcement material of the bridge specimen. During the detection process, the tension of the tension rod 130 is continuously increased until the bridge specimen breaks at the bonding interface. At this time, the tension value measured by the tension sensor 140 is the maximum tension value that the bonding interface can withstand.

[0055] As can be seen from the above, by setting the tension bracket, tension rod, tension sensor, first fixing part and second fixing part in the embodiment of the present application, the bridge specimen to be detected can be conveniently fixed and detected. This device has the advantages of being portable, easy to operate, fast in detection, accurate in results, etc., and can scientifically and accurately detect the strength of the bonding interface between the bridge reinforcement material and the old concrete, improving the safety of the bridge structure.

[0056] Further, in order to better fix the bridge specimen during the operation, in the device for detecting the bonding interface strength of the bridge reinforcement material proposed in the embodiment of the present application, a universal joint 150 is further included. As Figure 1 shown, one end of the universal joint 150 is connected to the tension sensor 140, and the other end is connected to the first fixing part 160. The universal joint 150 is used to adjust the position of the first fixing part 160 to align the first fixing part 160 with the second fixing part 170.

[0057] As Figure 1 shown, the universal joint 150 is arranged between the tension sensor 140 and the first fixing part 160. The universal joint 150 can adopt various methods and can be freely adjusted in the horizontal or vertical direction to meet the connection requirements of different positions.

[0058] During the detection process, since the volume and weight of the bridge specimen to be detected are generally large, it is generally difficult to fix the bridge specimen and adjust the bridge specimen. In the embodiment of the present application, the universal joint 150 is set to adjust the position of the first fixing part 160 to align it with the second fixing part 170, so as to fix the bridge specimen, which is very convenient and fast.

[0059] To achieve the connection between the universal joint 150, the tension sensor 140, and the first fixing part 160, in the embodiments of the present application, a threaded hole is provided at one end of the universal joint 150, and a threaded post is provided on the tension sensor 140. The universal joint is connected to the tension sensor through the threaded hole and the threaded post; a threaded post is provided at the other end of the universal joint, and a threaded hole is provided on the first fixing part 160. The universal joint is fixedly connected to the first fixing part through the threaded post and the threaded hole. In this way, the fixing of the universal joint 150 is very convenient and fast.

[0060] Further, in some embodiments, the first fixing part 160 or the second fixing part 170 further includes a fixing sleeve 161; one end of the fixing sleeve 161 is open for sleeving with the bridge specimen; a plurality of abutting members 162 are provided on the side wall of the fixing sleeve 161, and the plurality of abutting members 162 are used to abut against one end of the bridge specimen to fix one end of the bridge specimen in the fixing sleeve 161.

[0061] As Figure 2A and Figure 2B shown, in order to better fix the bridge specimen to be detected, the embodiments of the present application propose a fixing part structure for conveniently fixing the bridge specimen. In the embodiments of the present application, the first fixing part 160 and the second fixing part 170 generally adopt the same structure. Therefore, the present application takes the first fixing part 160 as an example for illustration.

[0062] As Figure 2A and Figure 2B shown, the overall structure of the fixing sleeve 161 is a cuboid structure, one end of which is open and the other end is connected to the universal joint 150 or the tension sensor 140. A plurality of abutting members 162 are provided on the side wall of the fixing sleeve 161. The plurality can be two or four or more, and are respectively provided on each inner wall, or a plurality of abutting members can be provided on the same side wall at the same time. In the embodiments of the present application, there is no limitation.

[0063] The plurality of abutting members 162 are used to abut against the bridge specimen to fix one end of the bridge specimen in the fixing sleeve.

[0064] Further, as Figure 2A and Figure 2B shown, the abutting member 162 includes an abutting plate 1622 and an adjusting valve 1621; the adjusting valve 1621 penetrates the side wall of the fixing sleeve 161 for movably arranging the abutting plate 1622 in the fixing sleeve 161 and adjusting the distance between the abutting plate 1622 and the side wall of the fixing sleeve 161 so that the abutting plate 1622 abuts against the bridge specimen.

[0065] The regulating valve 1621 can adjust the position of the abutting plate 1622 in the fixed sleeve 161 by rotation or other means. When the bridge specimen is placed in the fixed sleeve 161, the regulating valve 1621 can be adjusted to make it close to the side wall of the fixed sleeve 161 to create space for the bridge specimen; after the bridge specimen is placed, the regulating valve 1621 is used to move it away from the side wall of the fixed sleeve 161 to abut and clamp the bridge specimen, so that the first fixing part can fix the bridge specimen well.

[0066] In this way, the embodiments of the present application can conveniently fix and loosen the bridge specimen, greatly simplifying the operation process and difficulty of the detection.

[0067] In some embodiments, in order to better fix the bridge specimen, the surface of the abutting plate 1622 in contact with the bridge specimen is a planar structure or an arc structure to fit the surface of the bridge specimen.

[0068] As Figure 2A shown, when the shape of the bridge specimen is a cuboid or a cube, since the surface of the bridge specimen is planar, the contact surface between the abutting plate 1622 and the bridge specimen can be set as a planar structure to make the abutting plate 1622 better abut and clamp the bridge specimen.

[0069] As Figure 2B shown, when the shape of the bridge specimen is a cylinder, since the surface of the bridge specimen is arc-shaped, the contact surface between the abutting plate 1622 and the bridge specimen can be set as an arc structure to make the abutting plate 1622 better abut and clamp the bridge specimen.

[0070] In practical applications, in order to better clamp the bridge specimen, patterns can also be set on the surface of the abutting plate 1622 to increase the friction between the abutting plate 1622 and the bridge specimen.

[0071] By setting abutting plates with different shapes, the embodiments of the present application can fix bridge specimens with different shapes, greatly improving the practicability of the device for detecting the bonding interface strength of bridge reinforcement materials.

[0072] In some embodiments, as Figure 2A shown in Figure 2A or 2B, the fixed sleeve 161 is a cuboid structure, and four abutting members are provided on the side wall of the fixed sleeve 161, and the abutting members are arranged in pairs opposite to each other. This structure can fix the bridge specimen more balanced and achieve a better fixing effect.

[0073] In some embodiments, as Figure 1As shown, an electronic cylinder 180 is provided at one end of the stretching rod 130 away from the base 120, and the electronic cylinder 180 is used to drive the stretching rod 130 to perform telescopic movement.

[0074] By driving the telescopic movement of the stretching rod 130 through the electronic cylinder, the pulling force applied to the stretching rod 130 can be controlled more precisely, and the accuracy of strength detection can be improved.

[0075] In some embodiments, such as Figure 1 and Figure 3 As shown, an intelligent control unit 110 is provided on the stretching bracket 190. The intelligent control unit 110 is electrically connected to the electronic cylinder 180 and the tensile force sensor 140 respectively, and is used to control the telescopic movement of the stretching rod 130 through the electronic cylinder 180, and is also used to obtain the tensile force value of the tensile force sensor 140.

[0076] The intelligent control unit 110 includes an intelligent control screen 111, a power button 112, a start button 113, an emergency brake button 114, a stretching rod rising button 115, and a stretching rod descending button 116.

[0077] The intelligent control unit 110 can achieve precise control of the process of testing the strength of bridge specimens. Specifically, information such as the test number, the cross-sectional area of the bridge specimen, and the test rate is input on the intelligent control screen 111 of the intelligent control unit 110. Press the start button 113 to start the test. The electronic cylinder 180 servo-drives the stretching rod 130 to rise uniformly until the bonding interface of the tested bridge specimen is pulled apart and the test stops. Record the curve graph of the test time and the tensile force value on the intelligent control screen 111, and record the maximum tensile force value and the calculated bonding strength to complete the test of the bridge specimen. After the detection test is completed, remove the upper and lower parts of the bridge specimen through the regulating valve 1621, and then the bonding strength detection test of the next group of bridge specimens can be carried out.

[0078] Furthermore, in some embodiments, such as Figure 1 As shown, the base 120 includes a bottom plate 121 and leveling feet 122; the second fixing portion 170 and the stretching bracket 190 are provided on one side of the bottom plate 121; the leveling feet 122 are provided on the other side of the bottom plate 121, and the leveling feet 122 are movably connected to the bottom plate 121 through adjusting threads for placing the base 120 horizontally.

[0079] In summary, by setting up a stretching bracket, a stretching rod, a tensile sensor, a first fixing part and a second fixing part, the embodiment of the present application can conveniently fix and detect the bridge specimen to be detected. This device has the advantages of being portable, easy to operate, fast in detection, accurate in results, etc., and can scientifically and accurately detect the strength of the bonding interface between the bridge reinforcement material and the old concrete, improving the safety of the bridge structure.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for detecting the bonding interface strength of a bridge reinforcement material, characterized in that, For detecting bridge specimens, the device includes a base, a stretching bracket, a stretching rod, a tensile sensor, a first fixing part and a second fixing part; The stretching bracket is fixedly arranged on the base, and a stretching rod is fixedly arranged at one end of the stretching bracket away from the base. The stretching rod can perform telescopic movement relative to the base; One end of the stretching rod close to the base is connected to the first fixing part through the tensile sensor. The stretching rod can drive the first fixing part to perform telescopic movement through the tensile sensor; The second fixing part is fixedly arranged at a position on the base opposite to the first fixing part; The first fixing part and the second fixing part are respectively used for fixedly connecting one end and the other end of the bridge specimen; When the stretching rod performs telescopic movement, the stretching rod drives the first fixing part to stretch one end of the bridge specimen through the stretching sensor. The tensile sensor is used for detecting the tensile force of the bonding interface of the reinforcing material of the bridge specimen.

2. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 1, wherein It includes a universal joint; One end of the universal joint is connected to the tensile sensor, and the other end is connected to the first fixing part. The universal joint is used for adjusting the position of the first fixing part to align the first fixing part with the second fixing part.

3. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 2, wherein, One end of the universal joint is provided with a threaded hole, and the universal joint is connected to the tensile sensor through the threaded hole; The other end of the universal joint is provided with a threaded post, and the universal joint is fixedly connected to the first fixing part through the threaded post.

4. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 1, 2 or 3, characterized in that, The first fixing part or the second fixing part further includes a fixing sleeve; One end of the fixing sleeve is open for sleeving with the bridge specimen; A plurality of abutting members are arranged on the side wall of the fixing sleeve. The plurality of abutting members are used for abutting against one end of the bridge specimen to fix one end of the bridge specimen in the fixing sleeve.

5. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 4, wherein The abutting member includes an abutting plate and an adjusting valve; The adjusting valve penetrates through the side wall of the fixing sleeve and is used for movably arranging the abutting plate in the fixing sleeve and adjusting the distance between the abutting plate and the side wall of the fixing sleeve so that the abutting plate abuts against the bridge specimen.

6. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 5, wherein, The surface of the abutting plate on the side abutting against the bridge specimen is a flat structure or an arc structure to fit the surface of the bridge specimen.

7. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 5, wherein The fixing sleeve is of a cuboid structure, and four abutting members are arranged on the side wall of the fixing sleeve. The abutting members are arranged in pairs opposite to each other.

8. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 1, wherein An electronic cylinder is arranged at one end of the stretching rod away from the base. The electronic cylinder is used for driving the stretching rod to perform telescopic movement.

9. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 8, wherein, An intelligent control unit is arranged on the stretching bracket. The intelligent control unit is electrically connected to the electronic cylinder and the tensile sensor respectively and is used for controlling the telescopic movement of the stretching rod through the electronic cylinder and for obtaining the tensile force value of the tensile sensor.

10. The device for detecting the bonding interface strength of the bridge reinforcement material according to claim 1, characterized in that, The base includes a bottom plate and leveling feet; The second fixing part and the stretching bracket are arranged on one side of the bottom plate; The leveling feet are arranged on the other side of the bottom plate. The leveling feet are movably connected to the bottom plate through adjusting threads and are used for placing the base horizontally.

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