Reinforced concrete drainage pipe external pressure load test device convenient to disassemble and assemble

Abstract

The utility model belongs to the technical field of reinforced concrete drain pipe external pressure load tests, and particularly relates to a reinforced concrete drain pipe external pressure load test device convenient to disassemble and assemble. Comprising two supporting seats, each supporting seat is provided with two supporting rods, each supporting rod is provided with two sets of fixing pieces, a movable cross beam is arranged between the opposite fixing pieces of the four supporting rods, and a hydraulic device is arranged on the lower surface of the movable cross beam. Two lower supporting frames are arranged under the movable cross beam, a reinforced concrete drainage pipe is arranged between the two lower supporting frames, an upper supporting frame is arranged above the reinforced concrete drainage pipe, and a pressure sensor corresponding to the hydraulic device is arranged on the upper surface of the upper supporting frame. The hydraulic device and the pressure sensor are both connected with the load controller; and a hydraulic multi-point loading program is automatically controlled, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of external pressure load test of reinforced concrete drainage pipes, in particular to an external pressure load test device of reinforced concrete drainage pipes which is easy to disassemble and assemble. Background Art

[0002] Reinforced concrete drainage pipe: refers to a concrete circular pipe with a single or multi-layer steel bar skeleton arranged inside the pipe wall.

[0003] The design service life of reinforced concrete drainage pipes is not less than 50 years. It is a pipe with extremely wide uses. It is widely used in drainage of municipal roads, highways, railways, etc. and farmland water conservancy and irrigation projects because of its wide source of raw materials, complex production process, high external pressure load, ability to withstand 0.10MPa internal water pressure, strong resistance to chemical corrosion, long service life and low maintenance costs.

[0004] The external pressure load adopts the three-point test method. The test instruments, devices and technical requirements must comply with Appendix C of GB / T16752-2017 "Test methods for concrete and reinforced concrete drainage pipes". The test device includes a frame, an upper support beam, a lower support beam, and a rubber pad. The length, curvature, material, and overall dimensions of the upper and lower support beams and the thickness of the rubber pad are specified.

[0005] For the external pressure load test of flexible joint socket pipe, flexible joint steel socket pipe, flexible joint tongue and groove pipe, flexible joint double socket pipe, flexible joint steel socket pipe, rigid joint flat pipe, rigid joint socket pipe, rigid joint tongue and groove pipe, the loading point of the upper supporting beam is at the midpoint of the full length of the pipe. For the external pressure load test of flexible joint socket pipe, the loading point of the upper supporting beam is at the midpoint of the straight section of the pipe.

[0006] The upper support beam is used to distribute the load to the pipe. It is a steel beam through which the load is applied.

[0007] During the test, the stiffness of the steel beam should ensure that under the maximum load, the bending of the steel beam does not exceed 1 / 720mm of the test length of the pipe body.

[0008] When the nominal inner diameter is 1500mm~3000mm, two-point loading is adopted.

[0009] When the nominal inner diameter is 3500mm~4000mm, three-point loading is suitable;

[0010] When the nominal inner diameter is ≥4000mm, four-point or five-point loading is adopted to ensure that the straight section of the pipe is evenly stressed.

[0011] When testing the external pressure crack load of reinforced concrete drainage pipes, the load is continuously and uniformly applied at a loading speed of 30kN / m·min until the crack load and the failure load are reached.

[0012] The external pressure load test of RCP III 4000X2000 flexible joint steel socket steel pipe was carried out using a five-point loading method, five pressure sensors and five hydraulic jacks. Five test personnel used five hydraulic jacks to load synchronously, which could not ensure that the pipe was evenly stressed and the loading speed met the standards.

[0013] Reinforced concrete drainage pipes are usually cylindrical in shape. Some pipes have a diameter of more than 2 meters. They are large in size and heavy in weight. To undergo an external pressure load test, they must not only comply with the requirements of GB / T 16752-2017 "Test Methods for Concrete and Reinforced Concrete", but also ensure the accuracy and safety of the test.

[0014] The external pressure load test device for reinforced concrete drainage pipes has large dimensions, is rarely used, and occupies a large area of ​​production space.

[0015] In the patent application with publication number: CN 210243371 U, a reaction frame for external pressure load test of concrete and reinforced concrete pipes is disclosed. The technical problem solved is: it has the advantages of safety and reliability, and can effectively improve the safety of the strength test process of concrete and reinforced concrete pipes and ensure the accuracy of test data. However, its mobility and safety are relatively low.

[0016] Therefore, the present application proposes a detachable reinforced concrete drainage pipe external pressure load test device that is easy to disassemble and assemble, so as to solve the problems of accurate test data of reinforced concrete drainage pipes, safe operation, and large production site occupation. Utility Model Content

[0017] The utility model aims to provide a reinforced concrete drainage pipe external pressure load test device which is easy to disassemble and assemble. The device is convenient to disassemble and assemble, and the hydraulic multi-point loading program is automatically controlled, so the device has strong practicality.

[0018] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0019] A reinforced concrete drainage pipe external pressure load test device which is easy to disassemble and assemble comprises a support seat, wherein two support seats are arranged, each support seat is respectively provided with two support rods, each support rod is provided with a fixing plate, and each support rod is provided with two groups of fixing plates, a movable crossbeam is arranged between the fixing plates relative to the four support rods, a hydraulic device is arranged on the lower surface of the movable crossbeam, a lower support frame is arranged directly below the movable crossbeam, two lower support frames are arranged, a reinforced concrete drainage pipe is arranged between the two lower support frames, an upper support frame is arranged above the reinforced concrete drainage pipe, a pressure sensor corresponding to the hydraulic device is arranged on the upper surface of the upper support frame, and the hydraulic device and the pressure sensor are both connected to a load controller.

[0020] Furthermore, a pressure sensor anti-drop protection cover is arranged outside the pressure sensor.

[0021] Furthermore, a first hook is arranged on the upper support frame, a second hook is arranged on the movable crossbeam, and a steel rope is arranged between the first hook and the second hook.

[0022] Furthermore, safety protection plates are provided on both sides of the reinforced concrete drainage pipe.

[0023] Furthermore, the bottom of the support seat is disassembled and installed by pre-buried anchor screws.

[0024] Furthermore, a load controller placement platform is provided on the side of the reinforced concrete drainage pipe.

[0025] Furthermore, the hydraulic device, pressure sensor and load controller are all available on the market, and their internal structures and circuit connection relationships are well known in the art, so they will not be described in detail here.

[0026] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0027] 1. The utility model is provided with a support seat, and there are two support seats, each support seat is respectively provided with two support rods, each support rod is provided with a fixing plate, and two groups of fixing plates on each support rod are provided, and a movable crossbeam is provided between the fixing plates relative to the four support rods, and a hydraulic device is provided on the lower surface of the movable crossbeam, and a lower support frame is provided directly below the movable crossbeam, and there are two lower support frames, and a reinforced concrete drainage pipe is provided between the two lower support frames, and an upper support frame is provided above the reinforced concrete drainage pipe, and a pressure sensor corresponding to the hydraulic device is provided on the upper surface of the upper support frame, and the hydraulic device and the pressure sensor are both connected to the load controller for convenient disassembly and assembly, and can realize automatic control of the hydraulic multi-point loading program, thereby increasing practicality.

[0028] 2. A pressure sensor anti-drop protection cover is set outside the pressure sensor to prevent the pressure sensor from falling.

[0029] 3. A first hook is provided on the upper support frame, a second hook is provided on the movable crossbeam, and a steel rope is provided between the first hook and the second hook to prevent the upper support frame from falling.

[0030] 4. Safety protection plates are installed on both sides of the reinforced concrete drainage pipe to increase safety and prevent the reinforced concrete drainage pipe from rolling and causing harm to operators.

[0031] 5. The bottom of the support base can be disassembled and installed through pre-buried anchor screws, which facilitates the disassembly and installation of the support base.

[0032] 6. A load controller placement platform is set on the side of the reinforced concrete drainage pipe for easy observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the utility model.

[0034] Figure 2 It is a side view of the reinforced concrete drainage pipe of the utility model.

[0035] Figure 3 This is a schematic diagram of the support seat structure of the utility model.

[0036] In the figure, 1-support seat; 2-support rod; 3-fixed plate; 4-load controller placement platform; 5-movable beam; 6-hydraulic device; 7-lower support frame; 8-reinforced concrete drainage pipe; 9-upper support frame; 10-pressure sensor; 11-load controller; 12-pressure sensor anti-fall protection cover; 13-first hook; 14-second hook; 15-steel rope; 16-safety protection plate. DETAILED DESCRIPTION

[0037] like Figure 1-3 In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0038] A reinforced concrete drainage pipe external pressure load test device which is easy to disassemble and assemble, comprises a support seat 1, wherein two support seats 1 are provided, each support seat 1 is respectively provided with two support rods 2, each support rod 2 is provided with a fixing plate 3, and two groups of fixing plates 3 on each support rod 2 are provided, a movable crossbeam 5 is provided between the fixing plates 3 opposite to the four support rods 2, a hydraulic device 6 is provided on the lower surface of the movable crossbeam 5, a lower support frame 7 is provided directly below the movable crossbeam 5, two lower support frames 7 are provided, a reinforced concrete drainage pipe 8 is provided between the two lower support frames 7, an upper support frame 9 is provided above the reinforced concrete drainage pipe 8, a pressure sensor 10 corresponding to the hydraulic device 6 is provided on the upper surface of the upper support frame 9, the hydraulic device 6 and the pressure sensor 10 are both connected to a load controller 11, which is convenient for disassembly and assembly, and can realize automatic control of the hydraulic multi-point loading program, thereby increasing practicality.

[0039] More specifically, a pressure sensor anti-drop protection cover 12 is provided outside the pressure sensor 10 to prevent the pressure sensor from falling.

[0040] More specifically, a first hook 13 is provided on the upper support frame 9, a second hook 14 is provided on the movable crossbeam 5, and a steel rope 15 is provided between the first hook 13 and the second hook 14 to prevent the upper support frame from falling.

[0041] More specifically, safety protection plates 16 are provided on both sides of the reinforced concrete drainage pipe 8 to increase safety and prevent the reinforced concrete drainage pipe from rolling and causing harm to operators.

[0042] More specifically, the bottom of the support base 1 is disassembled and installed by pre-embedded anchor screws, which facilitates the disassembly and installation of the support base.

[0043] More specifically, a load controller placement platform 4 is provided on the side of the reinforced concrete drainage pipe 8 for easy observation.

[0044] When using the utility model, first push the support seat 1 to the place where the test is required, then fix it with the embedded anchor screws, and then fix the movable crossbeam 5 between the four support rods 2 through the fixing plate 3 as needed, place the reinforced concrete drainage pipe 8 to be tested, set the safety protection plate 16, and then open the number of hydraulic devices 6 as needed. During the experiment, the hydraulic device 6 presses down the pressure sensor 10 until the reinforced concrete drainage pipe 8 is destroyed. The pressure recorded at this time is the external pressure load of the reinforced concrete drainage pipe 8.

[0045] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An external pressure load test device for reinforced concrete drainage pipes that is easy to disassemble and assemble, characterized in that: The invention comprises a support seat (1), wherein two support seats (1) are provided, each support seat (1) is respectively provided with two support rods (2), each support rod (2) is provided with a fixing plate (3), and each support rod (2) is provided with two groups of fixing plates (3), a movable cross beam (5) is provided between the fixing plates (3) opposite to each other of the four support rods (2), a hydraulic device (6) is provided on the lower surface of the movable cross beam (5), a lower support frame (7) is provided directly below the movable cross beam (5), two lower support frames (7) are provided, a reinforced concrete drainage pipe (8) is provided between the two lower support frames (7), an upper support frame (9) is provided above the reinforced concrete drainage pipe (8), a pressure sensor (10) corresponding to the hydraulic device (6) is provided on the upper surface of the upper support frame (9), and the hydraulic device (6) and the pressure sensor (10) are both connected to a load controller (11).

2. The reinforced concrete drainage pipe external pressure load test device that is easy to disassemble and assemble according to claim 1 is characterized by: A pressure sensor anti-fall protection cover (12) is arranged outside the pressure sensor (10).

3. The external pressure load testing device for reinforced concrete drainage pipes that is easy to disassemble and assemble according to claim 1 is characterized in that: A first hook (13) is arranged on the upper support frame (9), a second hook (14) is arranged on the movable crossbeam (5), and a steel rope (15) is arranged between the first hook (13) and the second hook (14).

4. The external pressure load testing device for reinforced concrete drainage pipes that is easy to disassemble and assemble according to claim 1 is characterized in that: Safety protection plates (16) are arranged on both sides of the reinforced concrete drainage pipe (8).

5. The external pressure load testing device for reinforced concrete drainage pipes that is easy to disassemble and assemble according to claim 1 is characterized in that: The bottom of the support base (1) is disassembled and installed by pre-buried anchor screws.

6. The external pressure load testing device for reinforced concrete drainage pipes that is easy to disassemble and assemble according to claim 1 is characterized in that: A load controller placement platform (4) is arranged on the side of the reinforced concrete drainage pipe (8).

Images