A device for detecting the performance of reinforced concrete

Abstract

The present invention discloses a device for detecting the performance of reinforced concrete, belonging to the field of detecting the performance of reinforced concrete, comprising: a base, a reaction frame, an oil cylinder, a pressure plate, a detection box, a concrete compressive strength detection block, a wedge block, a steel bar tensile strength detection device and a steel bar bending and compression rod. The reaction frame is installed on the base, the oil cylinder is installed at the top of the reaction frame, sliding grooves are arranged at both ends of the base, a pair of wedge blocks slide in the two sliding grooves, a guiding surface is arranged on the wedge block, the guiding surfaces of the two wedge blocks are arranged oppositely, inclined surfaces are arranged at both ends of the pressure plate, and the inclined surfaces slide on the guiding surfaces; the detection box is placed at the top of the middle part of the base; the concrete compressive strength detection block is installed on the pressure plate and extends into the detection box; a steel bar tensile strength detection device is arranged on one side of the wedge block; and the steel bar bending and compression rod is arranged at the bottom end of the pressure plate. The present invention can simultaneously perform compressive strength detection of concrete, tensile strength and bending strength detection of steel bars on the reinforced concrete; provide a high-temperature environment to simulate the performance detection of reinforced concrete under the superposition of various factors.

Description

Technical Field

[0001] The present invention belongs to the field of performance testing of reinforced concrete, and particularly relates to a performance testing device for reinforced concrete. Background Art

[0002] Reinforced concrete refers to a composite material formed by adding a steel mesh, steel plate or fiber into concrete, and working together with the composite material to improve the mechanical properties of the concrete. The performance of reinforced concrete is related to the construction quality of the entire building. In the prior art, compressive performance tests are carried out on concrete, tensile and bending performance tests on steel bars, and bond performance tests between steel bars and concrete. However, in the prior art, only single items are detected. Since the actual damage to the building is not caused by a single factor affecting the reinforced concrete, the effect of multiple factors simultaneously affecting the reinforced concrete is greater than the simple superposition of multiple single factors separately affecting the reinforced concrete. There is an urgent need for those skilled in the art to propose a performance testing device that can simulate the influence of multiple factors on reinforced concrete when the building is actually damaged. Summary of the Invention

[0003] In view of this, the present invention provides a performance testing device for reinforced concrete to solve the above problems.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A performance testing device for reinforced concrete, comprising: a base, a reaction frame, an oil cylinder, a pressure plate, a detection box, a concrete compressive testing block, a wedge block, a steel bar tensile testing device and a steel bar bending and pressing rod. The reaction frame is installed on the base, and a plurality of the oil cylinders are installed at the top of the reaction frame. Sliding grooves are provided at both ends of the base, and a pair of the wedge blocks slide in the two sliding grooves respectively. The wedge block is provided with a guiding surface, and the guiding surfaces of the two wedge blocks are arranged oppositely. The two ends of the pressure plate are provided with inclined surfaces, and the guiding surface is adapted to the inclined surface, and the inclined surface slides on the guiding surface; the detection box is placed at the top of the middle of the base, between the wedge blocks, and a first steel bar and a second steel bar are arranged in the reinforced concrete sample block; the concrete compressive testing block is installed on the pressure plate and extends into the detection box for compressive testing of the concrete; steel bar tensile testing devices are arranged on the opposite sides of the two wedge blocks, and the steel bar tensile testing devices extend into the detection box in opposite directions and are fixedly connected to the first steel bar for tensile testing of the steel bar; the steel bar bending and pressing rod is arranged at the bottom end of the pressure plate and extends into the detection box for bending testing of the steel bar.

[0006] Further, the steel bar tensile testing device includes a pull rod, a tensiometer, and a drawing sleeve. The tensiometer is installed on the side wall of the wedge block. One end of the pull rod is fixedly connected to the tensiometer, and the other end extends into the testing box and is fixedly connected to the drawing sleeve. The drawing sleeve is fixedly connected to the end of the first steel bar.

[0007] Further, limiting parts are arranged on both sides of the wedge block, limiting chutes are arranged on both side walls of the sliding chute, the limiting parts are adapted to the limiting chutes, and the limiting parts are slidably connected in the limiting chutes.

[0008] Further, it further includes a pin connection block. The concrete compressive testing block passes through the pressure plate, and the concrete compressive testing block and the pressure plate are connected by the pin connection block; a first pressure gauge is arranged between the pin connection block and the concrete compressive testing block for monitoring the pressure on the reinforced concrete sample block.

[0009] Further, an arc-shaped steel bar hoop is arranged at the bottom end of the steel bar bending and pressing rod. The arc-shaped steel bar hoop is used to abut against the end of the second steel bar for steel bar bending test; a second pressure gauge is arranged between the steel bar bending and pressing rod and the pressure plate, and the second pressure gauge is used to monitor the pressure of the steel bar bending and pressing rod on the end of the second steel bar.

[0010] Further, it further includes a steel bar support hoop and a support rod. The support rod is located on one side of the reinforced concrete sample block, and the second steel bar passes through the steel bar support hoop. The steel bar support hoop is used to cooperate with the steel bar bending and pressing rod and the arc-shaped steel bar hoop for steel bar bending test.

[0011] Further, it further includes a heating device for providing a high-temperature environment for the testing box; the heating device includes an electric heating device and a thermocouple. The electric heating device is installed on the inner side wall of the testing box, and the thermocouple is installed on the top wall of the testing box.

[0012] Further, a high-temperature glass window is arranged on the front side wall of the testing box for observing the internal test situation of the testing box.

[0013] Further, a limiting block is arranged at the bottom end inside the testing box for limiting the reinforced concrete sample block.

[0014] Further, it further includes a displacement monitoring device. The displacement monitoring device includes a first displacement gauge, a second displacement gauge, and a third displacement gauge. A pair of the first displacement gauges are installed on the top end of the base and are respectively located on one side of the two wedge blocks; the second displacement gauge and the third displacement gauge are installed on the top end of the testing box and are respectively aligned with the concrete compressive testing block and the steel bar bending and pressing rod.

[0015] The beneficial effects of the present invention are as follows:

[0016] The present invention provides pressure by an oil cylinder on a reaction frame. The oil cylinder pushes a pressure plate downward. Through the force transmission of a pin connection block, a concrete compressive test block extends into a test box to perform a compressive test on the concrete. A reinforcing bar bending and pressing rod extends into the test box to apply pressure to the end of a second reinforcing bar to perform a bending test on the reinforcing bar. At the same time, the inclined surfaces at both ends of the pressure plate slide on the guiding surfaces of the wedge blocks, and then the two wedge blocks are pushed to slide towards both ends on the base. A tensile force is provided to a first reinforcing bar through a pull rod and a drawing sleeve to perform a tensile test on the reinforcing bar. When the concrete fails first during the compressive test, the pin connection block is pulled out, so that the concrete compressive test block no longer applies pressure to the sample block, while the pressure plate continues to push the wedge blocks towards both ends to perform a tensile test on the reinforcing bar, or continues to push the reinforcing bar bending and pressing rod to continue to perform a bending test on the end of the second reinforcing bar.

[0017] The present invention can achieve one or two of the concrete compressive test, the tensile and compressive tests of the reinforcing bar by disassembling the pin connection, the pull rod and the reinforcing bar bending and pressing rod.

[0018] The present invention also provides a high-temperature environment through an electric heating device to further simulate the performance of reinforced concrete in a high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0020] Figure 1 It is a front view of a reinforced concrete performance detection device.

[0021] Figure 2 It is a left view of a reinforced concrete performance detection device.

[0022] Figure 3 It is a top view of a reinforced concrete performance detection device.

[0023] Figure 4 For Figure 1 the A-A cross-sectional view in

[0024] Figure 5 For Figure 4 the B-B cross-sectional view in

[0025] Figure 6 For Figure 4 the C-C cross-sectional view in

[0026] Wherein, in the figure:

[0027] 10 - Base, 11 - Slide groove, 12 - Limit slide groove, 20 - Reaction frame, 30 - Oil cylinder, 40 - Pressure plate, 41 - Inclined plane, 50 - Detection box, 51 - High - temperature glass window, 52 - Limit block, 60 - Concrete compressive strength test block, 70 - Wedge block, 71 - Guide surface, 72 - Limit part, 81 - Pulling rod, 82 - Tensile meter, 83 - Pull - out sleeve, 90 - Reinforced bar bending and compression rod, 91 - Arc - shaped steel bar hoop, 100 - Reinforced concrete sample block, 101 - First steel bar, 102 - Second steel bar, 110 - Pin connection block, 120 - First pressure gauge, 130 - Second pressure gauge, 140 - Steel bar support hoop, 150 - Support rod, 161 - Electric heating device, 162 - Thermocouple, 171 - First displacement gauge, 172 - Second displacement gauge, 173 - Third displacement gauge. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0029] Referring to the attached Figures 1-6 As shown, the present invention provides a device for detecting the performance of reinforced concrete, including: a base 10, a reaction frame 20, an oil cylinder 30, a pressure plate 40, a detection box 50, a concrete compressive strength test block 60, a wedge block 70, a steel bar tensile detection device, and a reinforced bar bending and compression rod 90. The reaction frame 20 is installed on the base 10, and a plurality of oil cylinders 30 are installed at the top of the reaction frame 20 and communicated with an external hydraulic pump device; slide grooves 11 are provided at both ends of the base 10, and a pair of wedge blocks 70 slide in the two slide grooves 11 respectively. A guide surface 71 is provided on the wedge block 70, and the guide surfaces 71 of the two wedge blocks 70 are arranged oppositely. Inclined planes 41 are provided at both ends of the pressure plate 40, and the guide surface 71 is adapted to the inclined plane 41, and the inclined plane 41 slides on the guide surface 71; the detection box 50 is placed at the top of the middle of the base 10, between the wedge blocks 70. A first steel bar 101 and a second steel bar 102 are arranged in the reinforced concrete sample block 100; the concrete compressive strength test block 60 is installed on the pressure plate 40 and extends into the detection box 50 for detecting the compressive strength of the concrete; steel bar tensile detection devices are arranged on the opposite sides of the two wedge blocks 70, and the steel bar tensile detection devices extend into the detection box 50 in opposite directions and are fixedly connected to the first steel bar 101 for detecting the tensile strength of the steel bar; the reinforced bar bending and compression rod 90 is arranged at the bottom end of the pressure plate 40 and extends into the detection box 50 for detecting the bending resistance of the steel bar.

[0030] During use, the oil cylinder 30 on the reaction frame 20 provides pressure. The oil cylinder 30 pushes the pressure plate 40 downward, and the pressure plate 40 directly pushes the concrete compressive test block 60 into the test box 50 to abut against the upper surface of the reinforced concrete until the concrete is damaged and fails. At the same time, the pressure plate 40 pushes the steel bar bending and pressing rod 90 into the test box 50 to apply pressure to the end of the second steel bar 102 for the bending test of the steel bar until the second steel bar 102 bends and fails. At the same time, the pressure plate 40 moves vertically, and the inclined surfaces 41 at both ends slide on the guiding surfaces 71 of the wedge blocks 70 during the vertical downward movement, thereby pushing the two wedge blocks 70 to slide towards both ends in the sliding grooves 11 of the base 10. The steel bar tensile testing device arranged on the opposite sides of the two wedge blocks 70 provides tensile force to both ends of the first steel bar 101 until the first steel bar 101 fails in tension.

[0031] Preferably, in an embodiment, the steel bar tensile testing device includes a pull rod 81, a tensiometer 82, and a drawing sleeve 83. The tensiometer 82 is installed on the side wall of the wedge block 70. One end of the pull rod 81 is fixedly connected to the tensiometer 82, and the other end extends into the test box 50 and is fixedly connected to the drawing sleeve 83. The drawing sleeve 83 is fixedly connected to the end of the first steel bar 101. The pull rod 81 extends into the test box 50. During the process of the wedge block 70 moving towards both ends, a tensile force is generated on the pull rod 81, and the pull rod 81 generates a tensile force on the end of the first steel bar 101 through the drawing sleeve 83. During the movement of the wedge block 70, the tensiometer 82 monitors the tensile force on the first steel bar 101.

[0032] Preferably, in an embodiment, limiting portions 72 are arranged on both sides of the wedge block 70, and limiting sliding grooves 12 are arranged on both side walls of the sliding groove 11. The limiting portions 72 are adapted to the limiting sliding grooves 12, and the limiting portions 72 are slidably connected in the limiting sliding grooves 12. The sliding of the limiting portions 72 in the limiting sliding grooves 12 can ensure that the wedge block 70 moves horizontally more stably in the base 10.

[0033] Preferably, in an embodiment, a reinforced concrete performance testing device further includes a pin connection block 110. The concrete compressive test block 60 passes through the pressure plate 40, and the concrete compressive test block 60 is connected to the pressure plate 40 through the pin connection block 110. A first pressure gauge 120 is arranged between the pin connection block 110 and the concrete compressive test block 60 for monitoring the pressure on the reinforced concrete sample block 100. When the concrete fails first during the compressive test, the pin connection block 110 is pulled out, so that the concrete compressive test block 60 no longer applies pressure to the sample block, while the pressure plate 40 continues to push the wedge blocks 70 towards both ends for the tensile test of the steel bar, or continues to push the steel bar bending and pressing rod 90 to continue the bending test of the end of the second steel bar 102.

[0034] Preferably, in an embodiment, an arc-shaped steel bar hoop 91 is provided at the bottom end of the steel bar bending and compression rod 90, and the arc-shaped steel bar hoop 91 is used to abut against the end of the second steel bar 102 for steel bar bending detection; a second pressure gauge 130 is provided between the steel bar bending and compression rod 90 and the pressure plate 40, and the second pressure gauge 130 is used to monitor the pressure of the steel bar bending and compression rod 90 on the end of the second steel bar 102. A steel bar concrete performance detection device further includes a steel bar support hoop 140 and a support rod 150. The support rod 150 is located on one side of the steel bar concrete sample block 100, and the second steel bar 102 passes through the steel bar support hoop 140. The steel bar support hoop 140 is used to cooperate with the steel bar bending and compression rod 90 and the arc-shaped steel bar hoop 91 for steel bar bending detection. During detection, the support rod 150 and the steel bar support hoop 140 provide a fulcrum for the second steel bar 102, which is more conducive to the steel bar bending and compression rod 90 pressing on the second steel bar 102.

[0035] Preferably, in an embodiment, a steel bar concrete performance detection device further includes a heating device for providing a high-temperature environment for the detection box 50; the heating device includes an electric heating device 161 and a thermocouple 162. The electric heating device 161 is installed on the inner side wall of the detection box 50, and the electric heating device 161 heats the inside of the detection box 50 to provide performance detection of steel bar concrete at high temperatures; the thermocouple 162 is installed on the top wall of the detection box 50, and the thermocouple 162 monitors the temperature in the detection box 50 in real time.

[0036] Preferably, in an embodiment, a high-temperature glass window 51 is provided on the front side wall of the detection box 50 for observing the test situation inside the detection box 50.

[0037] Preferably, in an embodiment, a limiting block 52 is provided at the bottom end inside the detection box 50 for limiting the steel bar concrete sample block 100 to prevent the steel bar concrete sample block 100 from moving during the tensile and bending tests of the steel bars.

[0038] Preferably, in an embodiment, a steel bar concrete performance detection device further includes a displacement monitoring device. The displacement monitoring device includes a first displacement gauge 171, a second displacement gauge 172 and a third displacement gauge 173. A pair of first displacement gauges 171 are installed at the top end of the base 10 and are located on one side of the two wedge blocks 70 respectively; the second displacement gauge 172 and the second displacement gauge 172 are installed at the top end of the detection box 50 and are respectively aligned with the concrete compression test block 60 and the steel bar bending and compression rod 90. The first displacement gauge 171, the second displacement gauge 172 and the third displacement gauge 173 respectively monitor the displacement of the wedge block 70, the displacement of the concrete compression test block 60 and the displacement of the steel bar bending and compression rod 90 in real time.

[0039] It should be noted that, in the present invention, by disassembling the pin connection block 110, the pull rod 81 and the steel bar bending and compression rod 90, one or two of the concrete compression test, the tensile and compression tests of the steel bars can be realized.

[0040] The above are only specific embodiments of the present invention, and common knowledge such as the specific structures and characteristics known in the solutions is not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

[0041] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and reference can be made to the description in the method part for the relevant parts.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detecting the performance of reinforced concrete, characterized in that, Comprising: A base (10), a reaction frame (20), an oil cylinder (30), a pressure plate (40), a detection box (50), a concrete compressive strength test block (60), a wedge block (70), a steel bar tensile strength detection device, and a steel bar bending and compression rod (90). The reaction frame (20) is installed on the base (10), and a plurality of the oil cylinders (30) are installed at the top end of the reaction frame (20). Chutes (11) are provided at both ends of the base (10), and a pair of the wedge blocks (70) slide in the two chutes (11) respectively. A guiding surface (71) is provided on the wedge block (70), and the guiding surfaces (71) of the two wedge blocks (70) are arranged oppositely. Bevels (41) are provided at both ends of the pressure plate (40), and the guiding surface (71) is adapted to the bevel (41), and the bevel (41) slides on the guiding surface (71); The detection box (50) is placed at the top end of the middle part of the base (10), between the wedge blocks (70). A first steel bar (101) and a second steel bar (102) are arranged in the reinforced concrete sample block (100); The concrete compressive strength test block (60) is installed on the pressure plate (40) and extends into the detection box (50) for the compressive strength test of the concrete; Steel bar tensile strength detection devices are arranged on the opposite sides of the two wedge blocks (70), and the steel bar tensile strength detection devices extend into the detection box (50) in opposite directions and are fixedly connected to the first steel bar (101) for the tensile strength test of the steel bar; The steel bar bending and compression rod (90) is arranged at the bottom end of the pressure plate (40) and extends into the detection box (50) to abut against the end of the second steel bar (102) for the bending test of the steel bar.

2. The reinforced concrete performance detection device according to claim 1, characterized in that, The steel bar tensile strength detection device includes a pull rod (81), a tensiometer (82), and a drawing sleeve (83). The tensiometer (82) is installed on the side wall of the wedge block (70). One end of the pull rod (81) is fixedly connected to the tensiometer (82), and the other end extends into the detection box (50) and is fixedly connected to the drawing sleeve (83). The drawing sleeve (83) is fixedly connected to the end of the first steel bar (101).

3. The performance detection device for reinforced concrete according to claim 1, characterized in that, Limiting parts (72) are provided on both sides of the wedge block (70), limiting chutes (12) are provided on both side walls of the chute (11), the limiting parts (72) are adapted to the limiting chutes (12), and the limiting parts (72) are slidably connected in the limiting chutes (12).

4. A reinforced concrete performance detection device according to claim 1, characterized in that, It further includes a pin connection block (110). The concrete compressive strength test block (60) passes through the pressure plate (40), and the concrete compressive strength test block (60) is connected to the pressure plate (40) through the pin connection block (110); A first pressure gauge (120) is arranged between the pin connection block (110) and the concrete compressive strength test block (60) for monitoring the pressure on the reinforced concrete sample block (100).

5. The performance detection device for reinforced concrete according to claim 1, wherein, The bottom end of the steel bar bending and compression rod (90) is provided with an arc-shaped steel bar hoop (91), and the arc-shaped steel bar hoop (91) is used to abut against the end of the second steel bar (102) for steel bar bending detection; a second pressure gauge (130) is arranged between the steel bar bending and compression rod (90) and the pressure plate (40), and the second pressure gauge (130) is used to monitor the pressure of the steel bar bending and compression rod (90) on the end of the second steel bar (102).

6. The reinforcing bar concrete performance detection device according to claim 5, characterized in that, It further includes a steel bar support hoop (140) and a support rod (150). The support rod (150) is located on one side of the reinforced concrete sample block (100), and the second steel bar (102) passes through the steel bar support hoop (140). The steel bar support hoop (140) is used to cooperate with the steel bar bending and compression rod (90) and the arc-shaped steel bar hoop (91) for steel bar bending detection.

7. The performance detection device for reinforced concrete according to claim 1, characterized in that, It further includes a heating device for providing a high-temperature environment for the test box (50); the heating device includes an electric heating device (161) and a thermocouple (162). The electric heating device (161) is installed on the inner side wall of the test box (50), and the thermocouple (162) is installed on the top wall of the test box (50).

8. A reinforced concrete performance detection device according to claim 1, characterized in that, A high-temperature glass window (51) is arranged on the front side wall of the test box (50) for observing the internal test situation of the test box (50).

9. The performance detection device for reinforced concrete according to claim 1, wherein A limiting block (52) is arranged at the bottom end inside the test box (50) for limiting the reinforced concrete sample block (100).

10. A reinforced concrete performance detection device according to claim 1, characterized in that, It further includes a displacement monitoring device. The displacement monitoring device includes a first displacement gauge (171), a second displacement gauge (172) and a third displacement gauge (173). A pair of the first displacement gauges (171) are installed at the top end of the base (10) and are respectively located on one side of the two wedge blocks (70); the second displacement gauge (172) and the third displacement gauge (173) are installed at the top end of the test box (50) and are respectively aligned with the concrete compression test block (60) and the steel bar bending and compression rod (90).

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