A test device for testing the waterproof performance of a deformation joint

Abstract

The present application belongs to the technical field of waterproof test of underground structure, and particularly relates to a test device for testing waterproof performance of deformation joint. The device comprises a counterforce box, a jack, a pressurized closed water box, a water injection and pressurization hole and a pasted water-swelling rubber waterstop, the counterforce box is a rectangular frame with two opposite ends open, which is surrounded by a front panel, a back panel and two side panels, the jack is installed in the counterforce box and on the back panel, a rectangular boss is arranged in the middle of one end surface of the pressurized closed water box, a rectangular groove is processed on the other end surface, and the groove bottom of the rectangular groove extends into the rectangular boss, a water injection and pressurization hole is processed on the top side wall of the rectangular boss and communicates with the rectangular groove, a test piece with a deformation joint processed in the middle is arranged between the end surface with the groove and the front panel of the counterforce box. The device does not need special fixing conditions, has weak site requirement, and can simulate the actual water pressure condition in engineering, and quickly test the waterproof performance of the deformation joint part of underground engineering on the construction site.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of waterproof test of underground structure, and particularly relates to a test device for testing waterproof performance of deformation joint. BACKGROUND

[0002] With the rapid economic development and the continuous improvement of urbanization level, the development of underground space has become very common, and deformation joint as a common construction measure of underground structure also widely exists in various underground projects. Most underground projects are in water-rich environment, so deformation joint needs to adopt waterproof measures to achieve waterproof purpose. However, with the development of deformation joint waterproof technology, more and more waterproof processes and new waterproof materials appear, how to verify the waterproof performance of the selected deformation joint waterproof process and waterproof material before construction becomes an increasingly urgent demand of the industry.

[0003] Patent application CN111174982A discloses a deformation joint waterproof structure waterproof performance test system and test method, which comprises a main body structure, a hollow cavity is arranged in the main body structure, a deformation joint waterproof structure and a water inlet and outlet are arranged on the main body structure; a pressure frame unit is arranged outside the main body structure and is used for applying axial pressure to the main body structure; a pressure control unit comprises a pressure pump, the pressure pump injects water into the hollow cavity through the water inlet and outlet; a processing unit comprises electrodes arranged on the main body structure and a data processing device connected with the electrodes; the application can test the influence of the axial force of the main body structure on the waterproof performance, but the structure is complex, the portability is poor, and the device is not easy to disassemble and assemble, which is difficult to meet the needs of rapid test of the waterproof performance of the deformation joint part of the underground project on the construction site. SUMMARY

[0004] Therefore, the application provides a test device for testing the waterproof performance of deformation joint, which can intuitively and visually test the waterproof performance of the deformation joint of the test piece under the simulated actual water pressure conditions of the project.

[0005] The application is realized by the following technical solutions:

[0006] A test device for testing the waterproof performance of deformation joint, which comprises a counterforce box, a jack, a pressurized closed water box, a water injection and pressurization hole and a paste type water-swelling rubber waterstop;

[0007] The counterforce box is a rectangular frame with two opposite ends open, which is surrounded by a front panel, a back panel and two side panels, and the jack is installed in the counterforce box and on the back panel of the counterforce box;

[0008] The pressure closed water box is a cuboid plate, a rectangular boss is arranged in the middle of one end surface of the pressure closed water box, a rectangular groove is processed on the other end surface of the pressure closed water box, and the groove bottom of the rectangular groove extends into the rectangular boss; a water injection and pressure hole is processed on the top side wall of the rectangular boss and communicated with the rectangular groove;

[0009] The pressure closed water box is placed in the counterforce box body, the rectangular groove of the pressure closed water box faces the front panel of the counterforce box body; the vertical direction is perpendicular to the plane where the opening end of the rectangular frame is located, the water-stopping rubber strips of the pressure closed water box are pasted on the end surface of the rectangular groove of the pressure closed water box, along the opening of the rectangular groove and the two vertical directions of the pressure closed water box; the test piece is placed between the end surface of the rectangular groove of the pressure closed water box and the front panel of the counterforce box body, and one end of the deformation joint in the middle of the test piece is opposite to the position of the rectangular groove of the pressure closed water box.

[0010] Further, the front panel of the counterforce box body is processed with a vertical opening in the middle as an open area; the other end of the deformation joint of the test piece is opposite to the open area of the front panel of the counterforce box body.

[0011] Further, four jacks are installed on the back panel of the counterforce box body, and the positions of the jacks correspond to the four corners of the cuboid plate of the pressure closed water box.

[0012] Further, the materials of the counterforce box body and the pressure closed water box are metal.

[0013] Further, the materials of the counterforce box body and the pressure closed water box are steel plate or aluminum alloy.

[0014] Beneficial effects

[0015] (1) The test device for testing the waterproof performance of the deformation joint is provided, the pressure is provided by the jacks fixed on the back panel of the counterforce box body, the pressure closed water box and the test piece are fixed together, the bidirectional counterforce is provided by the counterforce box body, the water pressure large enough is provided into the pressure closed water box through the water injection and pressure hole, the water-stopping rubber strips of the pressure closed water box can effectively ensure the airtightness between the pressure closed water box and the test piece during the test, the waterproof performance of the deformation joint part of the test piece is tested under the simulated actual water pressure condition; the device does not need special fixing conditions, the site requirement is weak, the test of the waterproof performance of the deformation joint part of the underground engineering can be quickly carried out on the construction site, which is beneficial to the popularization and application of the new waterproof material and waterproof process of the deformation joint in the underground engineering, and plays a promoting role in solving the waterproof problem of the underground engineering.

[0016] (2) The application provides a test device for testing the waterproof performance of a deformation joint.

[0017] (3) The application provides a test device for testing the waterproof performance of a deformation joint. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 An isometric view of the test device for testing the waterproof performance of a deformation joint;

[0019] Figure 2 A schematic diagram of the pressurized closed water box;

[0020] Figure 3 A schematic diagram of the position relationship between the reaction force box and the jack;

[0021] Figure 4 A schematic diagram of the position of the test piece in the test device;

[0022] 1 - reaction force box, 2 - jack, 3 - pressurized closed water box, 4 - water injection and pressurization hole, 5 - adhesive water-swelling rubber waterstop, 6 - test piece, 7 - deformation joint, 8 - front panel, 9 - back panel. DETAILED DESCRIPTION

[0023] The application will be described in detail below with reference to the accompanying drawings and examples.

[0024] The application provides a test device for testing the waterproof performance of a deformation joint, as shown in Figure 1 The test device comprises a reaction force box 1, a jack 2, a pressurized closed water box 3, a water injection and pressurization hole 4, and an adhesive water-swelling rubber waterstop 5.

[0025] The reaction force box 1 is a rectangular frame with two open ends, which is surrounded by a front panel 8, a back panel 9, and two side panels; the front panel 8, the back panel 9, and the two side panels of the rectangular frame are vertically erected on the plane where the construction site is located; the jack 2 is installed in the reaction force box 1 and on the back panel 9 of the reaction force box 1; the direction perpendicular to the plane where the open end of the rectangular frame is located is the vertical direction, and the middle of the front panel 8 of the reaction force box 1 is processed with an opening along the vertical direction as an open area.

[0026] As shown in Figure 2As shown, the pressurized closed water box 3 is a cuboid plate, a rectangular boss is arranged in the middle of one end surface of the pressurized closed water box 3, a rectangular groove is processed on the other end surface of the pressurized closed water box 3, and the groove bottom of the rectangular groove extends into the rectangular boss; the top side wall of the rectangular boss is processed with a water injection and pressurization hole 4 communicated with the rectangular groove;

[0027] As shown in the figure, Figure 3 The pressurized closed water box 3 is placed inside the counterforce box 1, the groove surface faces the back plate 9 of the counterforce box 1, and the four jacks 2 installed on the back plate 9 correspond to the four corner positions of the cuboid plate of the pressurized closed water box 3 respectively; the end surface of the pressurized closed water box 3 where the rectangular groove opening is located faces the front panel of the counterforce box 1; the water-swelling rubber waterstop 5 is pasted on the surface where the rectangular groove opening of the pressurized closed water box 3 is located, along the four sides of the rectangular groove opening of the pressurized closed water box 3 and the two vertical sides of the pressurized closed water box 3.

[0028] The deformation joint is composed of waterproof structure and waterproof material, and the waterproof and anti-seepage problem of the deformation joint is the weakest link in the entire underground building structure. When the test device described in the embodiment is used to test the waterproof performance of the deformation joint, the center of the test piece 6 is processed with a deformation joint 7, and the waterproof structure and waterproof material of the deformation joint 7 are the same as those of the deformation joint to be tested on the construction site; as shown in the figure, Figure 4 The test piece 6 is placed between the end surface where the rectangular groove opening of the pressurized closed water box 3 is located and the front panel of the counterforce box 1, one end of the deformation joint 7 processed in the center of the test piece 6 corresponds to the position of the rectangular groove of the pressurized closed water box 3, and the other end of the deformation joint 7 corresponds to the position of the open area provided on the front panel of the counterforce box 1.

[0029] The jacks 2 fixed on the back plate of the counterforce box 1 provide pressure to tightly fix the pressurized closed water box 3 and the test piece 6 together; the counterforce box 1 provides bidirectional counterforce to provide a set water pressure into the pressurized closed water box 3 through the water injection and pressurization hole 4; the pasted water-swelling rubber waterstop 5 around the pressurized closed water box 3 can effectively ensure the airtightness between the pressurized closed water box 3 and the test piece 6 during the test process, so as to realize the simulation under the actual water pressure condition of the project to test the waterproof performance of the deformation joint part of the test piece; during the test process, whether the deformation joint of the test piece leaks can be directly observed through the open area provided on the front panel 8 of the counterforce box 1, so as to judge the waterproof performance of the deformation joint of the test piece; when the deformation joint located in the open area leaks, the waterproof performance of the deformation joint 7 is unqualified.

[0030] The materials of the counterforce box 1 and the pressurized closed water box 3 are metal; in this embodiment, the material of the counterforce box 1 is steel plate; the material of the pressurized closed water box 3 is steel plate.

[0031] To sum up, the above is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A test apparatus for testing the waterproofing performance of a deformation joint, characterised in that: The device comprises a counterforce box, a jack, a pressurized water-closed box, a water injection and pressurization hole and a pasted water-swelling rubber sealing strip; The counterforce box is a rectangular frame with two open ends, which is surrounded by a front panel, a back panel and two side panels, and the jack is installed in the counterforce box and on the back panel of the counterforce box; The pressurized water-closed box is a cuboid plate, a rectangular boss is arranged in the middle of one end surface of the pressurized water-closed box, a rectangular groove is processed on the other end surface of the pressurized water-closed box, and the groove bottom of the rectangular groove extends into the rectangular boss; a water injection and pressurization hole is processed on the top side wall of the rectangular boss and communicates with the rectangular groove; The pressurized water-closed box is placed inside the counterforce box, the rectangular groove of the pressurized water-closed box faces the front panel of the counterforce box; the direction perpendicular to the plane where the open end of the rectangular frame is located is the vertical direction, the pasted water-swelling rubber sealing strip is pasted on the end surface of the rectangular groove of the pressurized water-closed box, along the opening of the rectangular groove and the two vertical edges of the pressurized water-closed box; a test piece is placed between the end surface of the rectangular groove of the pressurized water-closed box and the front panel of the counterforce box, and one end of the deformation joint in the middle of the test piece is opposite to the position of the groove of the pressurized water-closed box. A vertical opening is processed in the middle of the front panel of the counterforce box as an open area; the other end of the deformation joint of the test piece is opposite to the open area of the front panel of the counterforce box.

2. The test device for testing the waterproof performance of a deformation joint according to claim 1, characterized in that: Four jacks are installed on the back panel of the counterforce box, and the positions of the jacks correspond to the four corners of the cuboid plate of the pressurized water-closed box.

3. The test device for testing the waterproof performance of a deformation joint according to claim 1 or 2, characterized in that: The materials of the counterforce box and the pressurized water-closed box are metal.

4. The test device for testing the waterproof performance of a deformation joint according to claim 3, characterized in that: The materials of the counterforce box and the pressurized water-closed box are steel plate or aluminum alloy.

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