Concrete hollow slab beam hinge joint damage detection device

Abstract

The utility model relates to the technical field of plate girder hinge joint detection, in particular to a concrete hollow plate girder hinge joint damage detection device which comprises ruler rods, a detection assembly used for detecting a plate girder hinge joint is installed on the ruler rods, and the detection assembly comprises a fixed ring and a sliding ring which are arranged on the two ruler rods in a sleeving mode respectively. The four sides of the inner wall of the sliding ring are each fixedly connected with a set of springs, and the other ends of each set of springs are each fixedly connected with an arc-shaped pressing plate. Through cooperative arrangement of the fixing ring, the sliding ring, the connecting plate and other structures, when the ruler is used, the two ruler rods are fixedly installed on two plate beams correspondingly and keep parallel, the connecting plate and the ruler rods are kept perpendicular, and therefore the ruler can be used conveniently; when the hinge joint of the two plate girders is damaged, the connecting plate can drive the sliding ring to move on the ruler rod, an operator can detect hinge joint damage data only according to the moving distance of the sliding ring on the ruler rod, and the problem of high cost caused by long-term monitoring through an electric measurement method is avoided as much as possible.

Description

Technical Field

[0001] This application relates to the technical field of inspection of slab-beam hinge joints, and particularly to a detection device for damage of hinge joints of concrete hollow slab-beams. Background Art

[0002] In the construction of highways and bridges in our country, most medium and small-sized structures adopt precast articulated slab-beam structures, that is, each concrete hollow slab-beam is connected horizontally through hinge joints, so that each slab-beam is horizontally connected into a whole. The connection method of the hinge joint is to pour concrete at the splicing position of two slab-beams, and utilize the close combination of the newly poured concrete with the stressed steel bars and the original structure to transfer shear force between the slab-beams through shear hinges, and jointly bear the vehicle load, so as to ensure the service life of the slab-beams and the driving safety.

[0003] The invention patent with the publication number CN103148763B proposes a detection method for damage of hinge joints of concrete hollow slab-beams, including mechanically recording the extreme value of the relative dynamic displacement of the position of the slab-beam hinge joint, evaluating the damage condition of the slab-beam hinge joint, recording the initial position of the floating mark after installing the hinge joint meter, recording the acquisition time and the position of the floating mark at that time during each acquisition process, and comparing the two with each other to obtain the maximum value of the relative displacement of the hinge joint between the slab-beams. The hinge joint meter is composed of a probe, a vertical scale, and upper and lower floating marks. The probe is an integral structure. The left and right parts of the probe are horizontal and parallel steel plates, the middle part of the probe is a vertical steel plate, the bottom of the middle steel plate of the probe is connected to the left steel plate of the probe, and the top of the middle steel plate of the probe is connected to the right steel plate of the probe. The vertical scale is closely attached to one end on the right side of the probe, and upper and lower floating marks are provided on the vertical scale.

[0004] For the above-mentioned detection method for damage of hinge joints of concrete hollow slab-beams, by respectively installing the vertical scale and the probe at the positions near the hinge joints at the bottom of two beams, with the end of the probe closely attached to the plane of the vertical scale and kept parallel, when the hinge joints of the two slab-beams are damaged, the probe will drive the floating mark to slide on the vertical scale, and the hinge joints of the slab-beams are detected according to the sliding distance of the floating mark on the vertical scale, which solves the problem of high cost caused by long-term monitoring through electrical measurement methods. The present utility model provides another solution to solve this problem. Content of the Utility Model

[0005] The purpose of the present utility model is to solve or at least alleviate the existing detection method for damage of hinge joints of concrete hollow slab-beams. By respectively installing the vertical scale and the probe at the positions near the hinge joints at the bottom of two beams, with the end of the probe closely attached to the plane of the vertical scale and kept parallel, when the hinge joints of the two slab-beams are damaged, the probe will drive the floating mark to slide on the vertical scale, and the hinge joints of the slab-beams are detected according to the sliding distance of the floating mark on the vertical scale, which solves the problem of high cost caused by long-term monitoring through electrical measurement methods. The present utility model provides another solution to solve this problem.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A detection device for the damage of the hinge joint of a concrete hollow slab beam, comprising a scale rod, and a detection component for detecting the hinge joint of the slab beam is installed on the scale rod. The detection component includes a fixed ring and a sliding ring respectively sleeved on the two scale rods. A group of springs are fixedly connected to the four sides of the inner wall of the sliding ring, and the other end of each group of springs is fixedly connected with an arc-shaped pressing plate. The arc-shaped pressing plate is attached to the scale rod, and connecting plates are respectively fixed on the sides of the fixed ring and the sliding ring close to each other.

[0008] By adopting the above technical solutions, during use, the two scale rods are respectively fixedly installed on the two slab beams and kept parallel, so that the connecting plates are perpendicular to the scale rods. When the hinge joints of the two slab beams are damaged, the connecting plates will drive the sliding rings to move on the scale rods. The operator only needs to detect the data of the damaged hinge joint according to the moving distance of the sliding rings on the scale rods, thus avoiding the problem of high cost caused by long-term monitoring by electrical measurement methods as much as possible.

[0009] Optionally, telescopic rods are arranged in the springs, and the two ends of the telescopic rods are respectively fixedly connected with the arc-shaped pressing plate and the sliding ring.

[0010] By adopting the above technical solutions, it is prevented that the springs are bent during the movement of the sliding rings.

[0011] Optionally, a first fixing bolt is arranged on the side wall of the fixed ring away from the sliding ring. The first fixing bolt penetrates through the fixed ring and is threadedly connected with the scale rod.

[0012] By adopting the above technical solutions, the fixed ring and the sliding ring can be slid out from the top end of the scale rod by removing the first fixing bolt, which is convenient for storage.

[0013] Optionally, a pointer is fixedly connected to the top end of the sliding ring, and the side wall of the pointer is attached to the side wall of the scale rod.

[0014] By adopting the above technical solutions, it is convenient for the operator to directly observe and read the detection data through the pointer.

[0015] Optionally, mounting discs are fixedly connected to the bottom ends of the two scale rods, and a plurality of mounting holes are formed in the mounting discs.

[0016] By adopting the above technical solutions, the mounting discs are fixed by connecting the external screws through the mounting holes to the ground, which is convenient for fixing the scale rods and improving the stability of the scale rods.

[0017] Optionally, an extension plate is provided between the two connecting plates. Both ends of the extension plate penetrate through the two connecting plates and form a sliding connection. Insertion rods are provided on the upper surfaces of the opposite ends of the two connecting plates. A plurality of equally spaced insertion holes are formed on the upper surface of the extension plate. The insertion rods penetrate through the connecting plates and are inserted into the insertion holes.

[0018] By adopting the above technical solution, by sliding the two connecting plates on the extension plate, the distance between the two measuring rods can be adjusted. Then, by inserting the insertion rods into the corresponding insertion holes, it is possible to prevent the connecting plates from sliding on the extension plate during use, which is convenient for detecting the beam-slab hinge joints at different distances.

[0019] Optionally, a fixing plate is fixedly connected to the insertion rod. Second fixing bolts are provided on both sides of the upper surface of the fixing plate. The second fixing bolts penetrate through the fixing plate and are threadedly connected to the connecting plate.

[0020] By adopting the above technical solution, after the insertion rod is inserted into the insertion hole, the insertion rod can be fixed on the connecting plate through the second fixing bolt, preventing problems such as the insertion rod falling out of the insertion hole due to accidental situations such as vibration during use.

[0021] In summary, the beneficial effects of the present application are as follows:

[0022] 1. Through the cooperative setting of structures such as the fixing ring, sliding ring, and connecting plate, during use, the two measuring rods are respectively fixedly installed on the two beam slabs and kept parallel, making the connecting plate perpendicular to the measuring rod. At the same time, the spring presses the arc-shaped pressing plate, making the arc-shaped pressing plate fit with the measuring rod, which can prevent the sliding ring from sliding randomly on the measuring rod. When the beam-slab hinge joint is damaged, the connecting plate will drive the sliding ring to move on the measuring rod, and the operator only needs to detect the data of the damaged hinge joint according to the moving distance of the sliding ring on the measuring rod, thus avoiding the problem of high cost caused by long-term monitoring through electrical measurement methods as much as possible;

[0023] 2. By sliding the two connecting plates on the extension plate, the distance between the two measuring rods can be adjusted. Then, by inserting the insertion rods into the corresponding insertion holes, it is possible to prevent the connecting plates from sliding on the extension plate during use, which is convenient for detecting the beam-slab hinge joints at different distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 is an exploded structural diagram of the connecting rod of the present utility model;

[0026] Figure 3 is an exploded structural diagram of the sliding ring of the present utility model.

[0027] Description of reference numerals: 1, scale rod; 2, fixed ring; 3, sliding ring; 4, spring; 5, arc-shaped pressing plate; 6, connecting plate; 7, telescopic rod; 8, first fixing bolt; 9, pointer; 10, mounting plate; 11, mounting hole; 12, extension plate; 13, inserting rod; 14, inserting hole; 15, fixing plate; 16, second fixing bolt. Detailed implementation manners

[0028] The following further elaborates on this application Figures 1 - 3 in conjunction with the accompanying drawings.

[0029] Please refer to Figures 1 - 3 , a detection device for the damage of the hinge joint of a concrete hollow slab beam, including two scale rods 1 arranged in parallel. A scale table is engraved on the scale rod 1. A detection component for detecting the hinge joint of the slab beam is installed on the scale rod 1. The detection component includes a fixed ring 2 and a sliding ring 3 sleeved on the two scale rods 1 respectively. The fixed ring 2 and the sliding ring 3 can both slide on the scale rod 1. A group of springs 4 are fixedly connected to the four sides of the inner wall of the sliding ring 3. The other end of each group of springs 4 is fixedly connected with an arc-shaped pressing plate 5 for allowing the sliding ring 3 to slide freely on the scale rod 1. The arc-shaped pressing plate 5 is in contact with the scale rod 1. Connecting plates 6 are respectively fixed on the sides of the fixed ring 2 and the sliding ring 3 that are close to each other.

[0030] During use, the two scale rods 1 are respectively fixedly installed on the two slab beams and kept parallel, so that the connecting plate 6 is perpendicular to the scale rod 1. At the same time, the spring 4 presses the arc-shaped pressing plate 5, making the arc-shaped pressing plate 5 fit with the scale rod 1, which can prevent the sliding ring 3 from sliding freely on the scale rod 1. When the hinge joints of the two slab beams are damaged, the connecting plate 6 will drive the sliding ring 3 to move on the scale rod 1. The operator only needs to detect the data of the damaged hinge joint according to the moving distance of the sliding ring 3 on the scale rod 1, thus avoiding as much as possible the problem of high cost caused by long-term monitoring through electrical measurement methods.

[0031] Referring to Figure 3 , telescopic rods 7 are arranged inside the springs 4. The two ends of the telescopic rods 7 are respectively fixedly connected with the arc-shaped pressing plate 5 and the sliding ring 3, preventing the spring 4 from bending during the movement of the sliding ring 3.

[0032] Referring to Figure 1 , a first fixing bolt 8 is provided on the side wall of the fixed ring 2 away from the sliding ring 3. The first fixing bolt 8 passes through the fixed ring 2 and is threadedly connected with the scale rod 1. By removing the first fixing bolt 8, the fixed ring 2 and the sliding ring 3 can be slid out from the top of the scale rod 1, which is convenient for storage.

[0033] Referring to Figure 1 , a pointer 9 is fixedly connected to the top of the sliding ring 3. The side wall of the pointer 9 is in contact with the side wall of the scale rod 1, which is convenient for the operator to directly observe and read the detection data.

[0034] Referring toFigure 1 At both bottoms of the two measuring rods 1, mounting plates 10 are fixedly connected. A plurality of mounting holes 11 are provided on the mounting plates 10. The mounting plates 10 are fixed by connecting to the ground through external screws passing through the mounting holes 11, which facilitates the fixation of the measuring rods 1 and improves the stability of the measuring rods 1.

[0035] Refer to Figure 1 and Figure 2 Refer to

[0036] Refer to Figure 2 Between the two connecting plates 6, an extension plate 12 is provided. Both ends of the extension plate 12 penetrate through the two connecting plates 6 and form a sliding connection. On the upper surfaces of the opposite ends of the two connecting plates 6, insertion rods 13 are provided. A plurality of equally spaced insertion holes 14 are provided on the upper surface of the extension plate 12. The insertion rods 13 all penetrate through the connecting plates 6 and are inserted into the insertion holes 14. By sliding the two connecting plates 6 on the extension plate 12, the distance between the two measuring rods 1 can be adjusted. Then, by inserting the insertion rods 13 into the corresponding insertion holes 14, it is possible to prevent the connecting plates 6 from sliding on the extension plate 12 during use, which facilitates the detection of the slab beam hinge joints at different distances.

[0037] The implementation principle of this application is as follows: During use, the two measuring rods 1 are respectively fixedly installed on the two slab beams and kept parallel. The connecting plate 6 is kept perpendicular to the measuring rod 1. At the same time, the spring 4 presses the arc-shaped pressing plate 5, so that the arc-shaped pressing plate 5 fits with the measuring rod 1, which can prevent the sliding ring 3 from sliding randomly on the measuring rod 1. When the hinge joints of the two slab beams are damaged, the connecting plate 6 will drive the sliding ring 3 to move on the measuring rod 1. The operator only needs to detect the data of the damaged hinge joints according to the moving distance of the sliding ring 3 on the measuring rod 1, thus avoiding as much as possible the problem of high cost caused by long-term monitoring by electrical measurement methods.

[0038] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for detecting damage of hinged joints of concrete hollow slab beams, comprising a ruler rod (1), on which a detection component for detecting hinged joints of slab beams is mounted, characterized in that: The detection assembly comprises a fixed ring (2) and a sliding ring (3) respectively sleeved on the two ruler rods (1); a group of springs (4) are fixedly connected to the four sides of the inner wall of the sliding ring (3); the other end of each group of springs (4) is fixedly connected to an arc-shaped pressure plate (5); the arc-shaped pressure plate (5) is fitted with the ruler rod (1); and a connecting plate (6) is respectively fixed to the side of the fixed ring (2) and the sliding ring (3) close to each other.

2. A concrete hollow slab beam hinge joint damage detection device according to claim 1, characterized in that: A telescopic rod (7) is provided in each of the springs (4), and two ends of the telescopic rod (7) are fixedly connected to the arc-shaped pressing plate (5) and the sliding ring (3) respectively.

3. The device for detecting hinged joint damage of a concrete hollow slab beam according to claim 1, characterized in that: A first fixing bolt (8) is provided on a side wall of the fixing ring (2) away from the sliding ring (3); the first fixing bolt (8) passes through the fixing ring (2) and is threadedly connected to the ruler rod (1).

4. The device for detecting hinged joint damage of a concrete hollow slab beam according to claim 1, characterized in that: A pointer (9) is fixedly connected to the top end of the sliding ring (3), and a side wall of the pointer (9) fits with a side wall of the ruler rod (1).

5. The device for detecting hinged joint damage of a concrete hollow slab beam according to claim 1, characterized in that: The bottom ends of the two ruler rods (1) are fixedly connected to a mounting plate (10), and the mounting plate (10) is provided with a plurality of mounting holes (11).

6. The device for detecting hinged joint damage of a concrete hollow slab beam according to claim 1, characterized in that: An extension plate (12) is provided between the two connecting plates (6), and two sections of the extension plate (12) penetrate the two connecting plates (6) to form a sliding connection. An insertion rod (13) is provided on the upper surface of the opposite ends of the two connecting plates (6). A plurality of insertion holes (14) distributed at equal intervals are provided on the upper surface of the extension plate (12), and the insertion rods (13) penetrate the connecting plates (6) and are plugged into the insertion holes (14).

7. A concrete hollow slab beam hinge damage detection device according to claim 6, characterized in that: The insertion rod (13) is fixedly connected to a fixing plate (15), and second fixing bolts (16) are provided on both sides of the upper surface of the fixing plate (15), and the second fixing bolts (16) pass through the fixing plate (15) and are threadedly connected to the connecting plate (6).

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