Prestress corrosion testing device

Abstract

The utility model relates to a prestress corrosion testing device. The prestress corrosion testing device comprises a shell, two clamping mechanisms and a driving mechanism, a containing cavity used for containing a corrosion medium is formed in the shell, the shell is provided with a first wall and a second wall which are oppositely arranged in the first direction, the shell is provided with a third wall in the second direction, and the first direction is parallel to the gravity direction and perpendicular to the second direction; the two clamping mechanisms are arranged on the first wall and the second wall correspondingly and used for clamping the two ends of the anchor rod correspondingly. And the driving mechanism is used for applying driving force in the first direction to at least one of the two clamping mechanisms, so that the anchor rod has internal stress. According to the utility model, the change of the corrosion environment and the appearance of the anchor rod in the corrosion process can be conveniently observed and recorded.

Description

Technical Field

[0001] The utility model belongs to the field of stress corrosion detection, and particularly relates to a prestressed corrosion test device.

[0002] Background Art

[0003] Prestressed anchor rods are often used for the reinforcement of slopes or bank slopes of hydraulic structures such as ports, waterways, and shipyards. During the application of prestressed anchor rods, they are not only in a long-term tensile stress state but also subjected to the scouring, soaking of permeating fluids in rock and soil masses, and the cross-action of ions and stress, which accelerates the corrosion and deterioration of the anchor rods, affects the durability of the anchor rods, and further reduces the safety of hydraulic structures. Therefore, in order to simulate the corrosion effect of prestressed anchor rods in hydraulic structures and study the deterioration mechanism of the tensile strength of anchor rods, a prestressed corrosion test device is often used.

[0004] In the prior art, the prestressed corrosion test device generally adopts a temporarily fabricated simple corrosion device, which is not convenient for observing and recording the changes in the corrosion environment and the appearance of the anchor rod during the corrosion process. Summary of the Utility Model

[0005] In view of the above problems, the embodiments of the present application provide a prestressed corrosion test device, which can facilitate the observation and recording of the changes in the corrosion environment and the appearance of the anchor rod during the corrosion process.

[0006] The embodiments of the present application provide a prestressed corrosion test device, including a housing, two clamping mechanisms, and a driving mechanism. The housing has a receiving cavity for accommodating a corrosion medium. The housing has a first wall and a second wall disposed opposite to each other in a first direction, and the housing has a third wall in a second direction. The first direction is parallel to the gravity direction and perpendicular to the second direction. The two clamping mechanisms are respectively disposed on the first wall and the second wall and are respectively used for clamping both ends of the anchor rod. The driving mechanism is used to apply a driving force in the first direction to at least one of the two clamping mechanisms so that the anchor rod has internal stress. Among them, the third wall is made of a transparent material.

[0007] Specifically, a part of the anchor rod is fixed in the outer receiving cavity through the two clamping mechanisms. After the driving mechanism applies a driving force in the first direction to at least one of the two clamping mechanisms so that the anchor rod has internal stress, a corrosion medium is injected into the receiving cavity to simulate the real environment to detect the strength of the anchor rod. During this period, the situation of the anchor rod can be observed in real time through the third wall, so as to facilitate the recording of the changes in the corrosion environment and the appearance of the anchor rod during the corrosion process.

[0008] In some embodiments, the outer shell includes a housing and a first end cap. An accommodation cavity with a first opening is formed inside the housing; the first end cap is arranged on the housing, and the first end cap slides along the first direction to open and close the first opening; wherein, the first end cap is the third wall.

[0009] In the above technical solution, by setting the third wall as the first end cap, when cleaning the inside of the accommodation cavity, the first end cap can be disassembled to facilitate cleaning the inside of the box body, and at the same time, it is convenient to clean the first end cap to maintain its light transmittance.

[0010] In some embodiments, the outer shell includes a housing and a second end cap. An accommodation cavity with a second opening is formed inside the housing; the second end cap is rotatably arranged on the housing, and the second end cap rotates relative to the housing to open and close the second opening; wherein, the second end cap is the second wall, and the second wall is located above the first wall.

[0011] In the above technical solution, by setting the second wall as the second end cap, when cleaning the inside of the accommodation cavity, the second end cap can be opened to facilitate cleaning the inside of the box body.

[0012] In some embodiments, a first through hole for injecting a corrosive medium is provided on the second end cap.

[0013] In the above technical solution, a first through hole for injecting a corrosive medium is provided on the second end cap, which is convenient for injecting the corrosive medium after the installation of the anchor rod and the application of prestress, restoring the construction process in hydraulic structures, and at the same time, it is convenient to record the change of the prestress value of the anchor rod before and after injecting the corrosive medium, and to eliminate the influence of injecting the corrosive medium in the later stage.

[0014] In some embodiments, a drain channel communicating with the outside is provided inside the first wall, and the drain channel has a first end communicating with the accommodation cavity; the inner surface of the first wall has a guiding surface for guiding the corrosive medium to move towards the first end.

[0015] In the above technical solution, the inner surface of the first wall has a guiding surface for guiding the corrosive medium to move towards the first end, so as to facilitate the discharge of the corrosive medium.

[0016] In some embodiments, the drain channel includes a first section and a second section that are sequentially connected. One end of the first section away from the second section is the first end, and one end of the second section away from the first section communicates with the outside; wherein, the axis of the second section forms an acute angle with the direction of gravity.

[0017] In the above technical solution, the axis of the second section forms an acute angle with the direction of gravity, such that there is a certain height difference between the end of the second section far from the first section and the other end close to the first section, thereby facilitating the discharge of the corrosive medium and reducing the risk of debris residue in the corrosive medium.

[0018] In some embodiments, the axis of the first section is parallel to the first direction, and one of the two clamping mechanisms is disposed on the inner peripheral side of the first section for clamping one end of the anchor rod.

[0019] In the above technical solution, one of the two clamping mechanisms is disposed on the inner peripheral side of the first section for clamping one end of the anchor rod, so that one of the clamping mechanisms can reasonably utilize the space in the accommodating cavity, thereby increasing the portion of the anchor rod located in the accommodating cavity, increasing the volume of the anchor rod participating in the measurement, and further increasing the reliability of the experiment.

[0020] In some embodiments, the two clamping mechanisms include a first clamping mechanism and a second clamping mechanism. The first clamping mechanism is disposed on the inner surface of the first wall for fixing one end of the anchor rod; the second wall of the second clamping mechanism has a second through hole for the anchor rod to pass through, and the second clamping mechanism is disposed on the outer surface of the second wall for fixing the other end of the anchor rod, and the driving mechanism is used to apply a driving force in the first direction to the second clamping mechanism to cause internal stress in the anchor rod.

[0021] In the above technical solution, the second clamping mechanism is disposed on the outer surface of the second wall for fixing the other end of the anchor rod, and the driving mechanism is used to apply a driving force in the first direction to the second clamping mechanism to cause internal stress in the anchor rod, so as to facilitate the setting of the driving mechanism outside the housing, thereby reducing the influence of the corrosive medium on the driving mechanism compared with setting the driving mechanism inside the housing, and increasing the service life of the device.

[0022] In some embodiments, the driving mechanism includes a jack and a mounting ring. The jack is disposed on the outer surface of the second wall; the mounting ring is disposed at the movable end of the jack and is coaxially arranged with the second through hole, and the second clamping mechanism is disposed in the mounting ring, and the jack is used to drive the mounting ring to move in the first direction.

[0023] In some embodiments, the first clamping mechanism includes a first telescopic corrugated clamp and a first pressure sensor. The first telescopic corrugated clamp has a first clamping end for clamping the anchor rod; the first pressure sensor is disposed at the first clamping end for collecting the clamping force exerted by the first clamping end on the anchor rod; the second clamping mechanism includes a second telescopic corrugated clamp and a second pressure sensor. The second telescopic corrugated clamp has a second clamping end for clamping the anchor rod; the second pressure sensor is disposed at the second clamping end for collecting the clamping force exerted by the second clamping end on the anchor rod; the prestress corrosion test device further includes a controller, and the controller is electrically connected to the first telescopic corrugated clamp, the first pressure sensor, the second telescopic corrugated clamp, the second pressure sensor, and the driving mechanism.

[0024] Specifically, the first clamping mechanism includes a first telescopic corrugated clamp, and the second clamping mechanism includes a second telescopic corrugated clamp so that the device can clamp anchor rods with different radial dimensions, increasing the scope of use of the device; at the same time, the clamping fixture enhances the load-holding stability and uniformity, increasing the reliability of detection. The first clamping mechanism includes a first pressure sensor, the second clamping mechanism includes a second pressure sensor, and the controller is electrically connected to the first telescopic corrugated clamp, the first pressure sensor, the second telescopic corrugated clamp, the second pressure sensor, and the driving mechanism, thereby constituting a prestress application and monitoring system, increasing the monitoring ability of the device for the stress of the anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is a schematic structural diagram of the prestress corrosion test device provided by the embodiment of the present invention;

[0027] Figure 2 is a schematic structural diagram of the prestress corrosion test device in another direction provided by the embodiment of the present invention;

[0028] Figure 3 is Figure 2 a partial enlarged view of part A in

[0029] Figure 4 is Figure 2 a partial enlarged view of part B in

[0030] Figure 5This is a cross-sectional view of the prestressed corrosion test device provided by the embodiments of the present utility model. Detailed implementation manners

[0031] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing 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, and therefore should not be construed as a limitation to the present application.

[0033] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] Prestressed anchor rods are often used for the reinforcement of slopes or bank slopes of hydraulic structures such as ports, waterways, and shipyards. During the application of prestressed anchor rods, they are not only in a long-term tensile stress state, but also subjected to the scouring, soaking of the permeating fluid in the rock and soil mass, and the cross-action of ions and stress, which accelerates the corrosion deterioration of the anchor rods, affects the durability of the anchor rods, and further reduces the safety of the hydraulic structure. Therefore, in order to simulate the corrosion effect of prestressed anchor rods in hydraulic structures and carry out research on the deterioration mechanism of the tensile strength of the anchor rods, a prestressed corrosion test device is often used.

[0035] In the prior art, the prestressed corrosion test device generally adopts a temporarily made simple corrosion device, which is not convenient for observing and recording the changes in the corrosion environment and the appearance of the anchor rod during the corrosion process.

[0036] To solve the above technical problems, refer to Figures 1 - 5, an embodiment of the present application provides a prestressed corrosion test device, including a housing 10, two clamping mechanisms 20, and a driving mechanism 30. The housing 10 has a receiving cavity for accommodating a corrosion medium. The housing 10 has a first wall 10A and a second wall 10B disposed opposite to each other in a first direction X, and a third wall 10C in a second direction Y. The first direction X is parallel to the gravity direction and perpendicular to the second direction Y; the two clamping mechanisms 20 are respectively disposed on the first wall 10A and the second wall 10B, and are respectively used for clamping both ends of the anchor rod; the driving mechanism 30 is used to apply a driving force in the first direction X to at least one of the two clamping mechanisms 20, so that internal stress exists in the anchor rod; wherein, the third wall 10C is made of a transparent material.

[0037] The housing 10 is a component in the device that forms a receiving cavity to accommodate the corrosion medium. Understandably, the inner wall of the receiving cavity can be subjected to anti-corrosion treatment. The above-mentioned corrosion medium can be a salt solution simulating the composition of seawater.

[0038] The clamping mechanism 20 is a mechanism for fixing the anchor rod. Exemplarily, the clamping mechanism 20 can be a sleeve and a bolt. The sleeve is used to sleeved outside the anchor rod, and threaded holes are provided on the circumferential side of the sleeve, and the bolt passes through the threaded hole to abut against the anchor rod to fix the anchor rod.

[0039] The driving mechanism 30 is a mechanism for applying an external force to the clamping mechanism 20. Exemplarily, the driving mechanism 30 can be a hydraulic cylinder, a linear module, a cylinder, and an electric telescopic rod.

[0040] The first direction X can be the gravity direction, and the second direction Y is a horizontal direction perpendicular to the first direction X.

[0041] In some embodiments, the housing 10 has mounting seats for connecting to the ground. There are four mounting seats arranged around the circumference of the housing 10, and through holes for screws to pass through are provided on all four mounting seats. The screws pass through the through holes and are connected to the ground to fix the housing 10 relative to the ground.

[0042] The third wall 10C is made of a transparent material. Exemplarily, the third wall 10C can be made of transparent materials such as plexiglass and glass.

[0043] Specifically, a part of the anchor rod is fixed in the outer receiving cavity through the two clamping mechanisms 20. After the driving mechanism 30 applies a driving force in the first direction X to at least one of the two clamping mechanisms 20 to make internal stress exist in the anchor rod, a corrosion medium is injected into the receiving cavity to simulate the real environment, so as to detect the strength of the anchor rod. During this period, the situation of the anchor rod can be observed in real time through the third wall 10C, so as to record the changes in the corrosion environment and the appearance of the anchor rod during the corrosion process.

[0044] According to some embodiments of the present application, the housing 10 includes a housing body 11 and a first end cover 110. An accommodation cavity with a first opening 101 is formed inside the housing body 11; the first end cover 110 is arranged on the housing body 11, and the first end cover 110 slides along the first direction X to open and close the first opening 101; wherein, the first end cover 110 is the third wall 10C.

[0045] In some embodiments, the first end cover 110 can be an acrylic board. Sliding grooves extending along the first direction X are provided on opposite sides of the first opening 101 in the third direction Z. The first end cover 110 is inserted into the sliding grooves and can move along the first direction X. It can be understood that there is a sealed connection between the edge of the first end cover 110 in the third direction Z and the sliding grooves.

[0046] The third direction Z is a horizontal direction perpendicular to the second direction Y.

[0047] In some embodiments, there are at least two first end covers 110 spaced apart along the second direction Y.

[0048] Specifically, by setting the third wall 10C as the first end cover 110, when cleaning the inside of the accommodation cavity, the first end cover 110 can be disassembled to facilitate cleaning the inside of the box body, and at the same time, it is convenient to clean the first end cover 110 to maintain its light transmissivity.

[0049] According to some embodiments of the present application, the housing 10 includes a housing body 11 and a second end cover 13. An accommodation cavity with a second opening 102 is formed inside the housing body 11; the second end cover 13 is rotatably arranged on the housing body 11, and the second end cover 13 rotates relative to the housing body 11 to open and close the second opening 102; wherein, the second end cover 13 is the second wall 10B, and the second wall 10B is located above the first wall 10A.

[0050] In some embodiments, the first end cover 110 can be a metal plate to reduce the risk of deformation when bearing the reaction force transmitted by the anchor rod to the clamping mechanism 20 during detection.

[0051] In some embodiments, the second end cover 13 is arranged on the housing body 11 through a hinge rotating ring.

[0052] In some embodiments, a handle 13C for driving the second end cover 13 to rotate is installed on the outer side of the second end cover 13.

[0053] In this technical solution, by setting the second wall 10B as the second end cover 13, when cleaning the inside of the accommodation cavity, the second end cover 13 can be opened to facilitate cleaning the inside of the box body.

[0054] According to some embodiments of the present application, a first through hole 13A for injecting a corrosive medium is provided on the second end cover 13.

[0055] Specifically, a first through hole 13A for injecting a corrosive medium is provided on the second end cap 13, which facilitates the injection of the corrosive medium after the installation of the anchor rod and the application of prestress, restores the construction process in hydraulic structures, and at the same time facilitates the recording of the change in the prestress value of the anchor rod before and after injecting the corrosive medium, facilitates the elimination of the influence of injecting the corrosive medium in the later stage, and further facilitates the device to simultaneously perform prestress corrosion and strength testing, realizing the detection of the strength degradation mechanism of prestressed anchor rods under the action of multi-field coupling.

[0056] According to some embodiments of the present application, a liquid discharge channel 11B communicating with the outside is provided inside the first wall 10A, and the liquid discharge channel 11B has a first end 110 communicating with the accommodation cavity; the inner surface of the first wall 10A has a guiding surface 11A, and the guiding surface 11A is used to guide the corrosive medium to move closer to the first end 110.

[0057] It can be understood that the guiding surface 11A can have various shapes. Exemplarily, the guiding surface 11A can be the entire or partial circumferential side of a cone or the entire or partial circumferential side of a pyramid.

[0058] In this technical solution, the inner surface of the first wall 10A has a guiding surface 11A, and the guiding surface 11A is used to guide the corrosive medium to move closer to the first end 110, thereby facilitating the discharge of the corrosive medium.

[0059] According to some embodiments of the present application, the liquid discharge channel 11B includes a first section 111 and a second section 112 that are sequentially connected. One end of the first section 111 away from the second section 112 is the first end 110, and one end of the second section 112 away from the first section 111 communicates with the outside; wherein, the axis of the second section 112 forms an acute angle with the direction of gravity.

[0060] In this technical solution, the axis of the second section 112 forms an acute angle with the direction of gravity, so that there is a certain height difference between one end of the second section 112 away from the first section 111 and the other end close to the first section 111, thereby facilitating the discharge of the corrosive medium and reducing the risk of debris residue in the corrosive medium.

[0061] According to some embodiments of the present application, the axis of the first section 111 is parallel to the first direction X, and one of the two clamping mechanisms 20 is arranged on the inner peripheral side of the first section 111 to clamp one end of the anchor rod.

[0062] In some embodiments, the radial dimension of the first section 111 is larger than the radial dimension of the second section 112 to facilitate the installation of the clamping mechanism 20.

[0063] In this technical solution, one of the two clamping mechanisms 20 is disposed on the inner peripheral side of the first section 111 for clamping one end of the anchor rod, so that one of the clamping mechanisms 20 can reasonably utilize the space in the accommodating cavity, thereby increasing the portion of the anchor rod located in the accommodating cavity, increasing the volume of the anchor rod participating in the measurement, and further increasing the reliability of the experiment.

[0064] According to some embodiments of the present application, the two clamping mechanisms 20 include a first clamping mechanism 21 and a second clamping mechanism 22. The first clamping mechanism 21 is disposed on the inner surface of the first wall 10A for fixing one end of the anchor rod; the second clamping mechanism 22 has a second through hole 13B on the second wall 10B for the anchor rod to pass through, and the second clamping mechanism 22 is disposed on the outer surface of the second wall 10B for fixing the other end of the anchor rod. The driving mechanism 30 is used to apply a driving force to the second clamping mechanism 22 in the first direction X to cause internal stress in the anchor rod.

[0065] In some embodiments, the first clamping mechanism 21 is disposed in the first section 111, and the second clamping mechanism 22 is disposed on the outer surface of the second wall 10B.

[0066] In this technical solution, the second clamping mechanism 22 is disposed on the outer surface of the second wall 10B for fixing the other end of the anchor rod. The driving mechanism 30 is used to apply a driving force to the second clamping mechanism 22 in the first direction X to cause internal stress in the anchor rod, so as to facilitate the setting of the driving mechanism 30 outside the housing 11. Thus, compared with setting the driving mechanism 30 inside the housing 11, the influence of the corrosive medium on the driving mechanism 30 is reduced, and the service life of the device is increased.

[0067] In some embodiments, the driving mechanism 30 includes a jack 31 and a mounting ring 32. The jack 31 is disposed on the outer surface of the second wall 10B; the mounting ring 32 is disposed at the movable end of the jack 31 and is coaxially arranged with the second through hole 13B. The second clamping mechanism 22 is disposed in the mounting ring 32, and the jack 31 is used to drive the mounting ring 32 to move in the first direction X.

[0068] The jack 31 is a driving member that can be hydraulically driven.

[0069] It can be understood that the mounting ring 32 can be made of a metal part to reduce the risk of deformation of the mounting ring 32.

[0070] In some embodiments, a plurality of jacks 31 are circumferentially spaced around the mounting ring 32. The plurality of jacks 31 provide a driving force to the mounting ring 32 to apply a driving force to the second clamping mechanism 22, so that the mounting ring 32 is more evenly stressed and the reliability of the detection is improved.

[0071] According to some embodiments of the present application, the first clamping mechanism 21 includes a first telescopic corrugated clip 211 and a first pressure sensor. The first telescopic corrugated clip 211 has a first clamping end 211A for clamping the anchor rod; the first pressure sensor is disposed at the first clamping end 211A for collecting the clamping force exerted by the first clamping end 211A on the anchor rod; the second clamping mechanism 22 includes a second telescopic corrugated clip 221 and a second pressure sensor. The second telescopic corrugated clip 221 has a second clamping end 221A for clamping the anchor rod; the second pressure sensor is disposed at the second clamping end 221A for collecting the clamping force exerted by the second clamping end 221A on the anchor rod; the prestressed corrosion test device further includes a controller 40, and the controller 40 is electrically connected to the first telescopic corrugated clip 211, the first pressure sensor, the second telescopic corrugated clip 221, the second pressure sensor, and the driving mechanism 30.

[0072] In some embodiments, the first telescopic corrugated clips 211 are multiple ones circumferentially spaced around the first section 111.

[0073] In some embodiments, the second telescopic corrugated clips 221 are multiple ones circumferentially spaced around the mounting ring 32.

[0074] Specifically, the first clamping mechanism 21 includes the first telescopic corrugated clip 211, and the second clamping mechanism 22 includes the second telescopic corrugated clip 221 so that the device can clamp anchor rods with different radial dimensions, increasing the scope of use of the device; at the same time, the clamping fixture enhances the load-holding stability and uniformity, increasing the reliability of the detection. The first clamping mechanism 21 includes the first pressure sensor, the second clamping mechanism 22 includes the second pressure sensor, and the controller 40 is electrically connected to the first telescopic corrugated clip 211, the first pressure sensor, the second telescopic corrugated clip 221, the second pressure sensor, and the driving mechanism 30, thereby constituting a prestress application and monitoring system, increasing the monitoring ability of the device for the stress of the anchor rod.

[0075] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0076] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A prestressed corrosion test device for testing the strength of an anchor rod after corrosion, characterized in that, Comprising: A housing with an accommodation cavity for containing a corrosive medium. The housing has a first wall and a second wall oppositely arranged in a first direction, and a third wall in a second direction. The first direction is parallel to the gravity direction and perpendicular to the second direction. Two clamping mechanisms respectively arranged on the first wall and the second wall and respectively used for clamping both ends of the anchor rod. A driving mechanism for applying a driving force in the first direction to at least one of the two clamping mechanisms so that internal stress exists in the anchor rod. Wherein, the third wall is made of a transparent material.

2. The prestressed corrosion test device according to claim 1, characterized in that, The housing includes: A housing body with the accommodation cavity having a first opening formed inside. A first end cover arranged on the housing body. The first end cover slides in the first direction to open and close the first opening. Wherein, the first end cover is the third wall.

3. The prestressed corrosion test device according to claim 1 or 2, characterized in that, The housing includes: A housing body with the accommodation cavity having a second opening formed inside. A second end cover rotatably arranged on the housing body. The second end cover rotates relative to the housing body to open and close the second opening. Wherein, the second end cover is the second wall, and the second wall is located above the first wall.

4. The prestressed corrosion test device according to claim 3, characterized in that, A first through hole for injecting the corrosive medium is provided on the second end cover.

5. The prestressed corrosion test device according to claim 4, characterized in that, A drain channel communicating with the outside is provided inside the first wall, and the drain channel has a first end communicating with the accommodation cavity. A guiding surface is provided on the inner surface of the first wall, and the guiding surface is used for guiding the corrosive medium to move towards the first end.

6. The prestressed corrosion test device according to claim 5, wherein, The drain channel includes a first section and a second section connected in sequence. One end of the first section away from the second section is the first end, and one end of the second section away from the first section communicates with the outside. Wherein, the axis of the second section forms an acute angle with the gravity direction.

7. The prestressed corrosion test device according to claim 6, wherein, The axis of the first section is parallel to the first direction, and one of the two clamping mechanisms is arranged on the inner peripheral side of the first section for clamping one end of the anchor rod.

8. The prestressed corrosion test device according to claim 1, wherein, The two clamping mechanisms include: A first clamping mechanism arranged on the inner surface of the first wall for fixing one end of the anchor rod. A second clamping mechanism. A second through hole for the anchor rod to pass through is provided on the second wall. The second clamping mechanism is arranged on the outer surface of the second wall for fixing the other end of the anchor rod. The driving mechanism is used for applying a driving force in the first direction to the second clamping mechanism so that internal stress exists in the anchor rod.

9. The prestressed corrosion test device according to claim 8, characterized in that, The driving mechanism includes: A jack arranged on the outer surface of the second wall. An installation ring arranged at the movable end of the jack and coaxially arranged with the second through hole. The second clamping mechanism is arranged inside the installation ring, and the jack is used for driving the installation ring to move in the first direction.

10. The prestressed corrosion test device according to claim 8 or 9, characterized in that, The first clamping mechanism includes: A first telescopic corrugated clip with a first clamping end for clamping the anchor rod. A first pressure sensor arranged at the first clamping end for collecting the clamping force applied by the first clamping end to the anchor rod. The second clamping mechanism includes: A second telescopic corrugated clip with a second clamping end for clamping the anchor rod. A second pressure sensor is arranged at the second clamping end for collecting the clamping force applied by the second clamping end to the anchor rod; The prestressed corrosion test device further includes a controller, and the controller is electrically connected to the first telescopic corrugated clamp, the first pressure sensor, the second telescopic corrugated clamp, the second pressure sensor, and the driving mechanism.

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