A kind of indoor test device for interface shear performance of structural reserved gap sealing material

Abstract

The utility model belongs to the technical field of plugging material interface shear resistance performance test, specifically is a kind of structural reserved gap plugging material interface shear resistance performance indoor test device, the platform component includes platform plate;Two platform plates are symmetrically arranged;The test piece is placed on the top of platform plate;Two groups of first through holes are formed on the platform plate and symmetrically arranged;The top of platform plate is slidably connected with two symmetrically arranged fixed steel strips, and the fixed steel strips are distributed at the position corresponding to the first through hole;A plurality of second through holes are formed in the top of fixed steel strip, and the second through holes are distributed in linear array state;The inside of first through hole and second through hole is slidably connected with first bolt;Through the above structure, the distance between two platform plates can be effectively adjusted, so that it can adapt to test piece and plugging material of different structures, thereby improving the adaptability and flexibility of the device.

Description

Technical Field

[0001] This utility model belongs to the technical field of interfacial shear resistance test of sealing materials, specifically an indoor test device for the interfacial shear resistance of sealing materials with pre-reserved gaps in structures. Background Technology

[0002] Leakage prevention and control of pre-reserved gaps in underground engineering structures is directly related to building safety and service life, and the water pressure resistance of sealing materials is the core control factor. Pre-reserved gaps in structures, especially structural expansion joints, are usually quite wide. Generally speaking, the width of structural expansion joints exceeds 2cm, and can reach more than 15cm.

[0003] For the sealing effect of such structural joints, not only is it required that the sealing material itself has excellent impermeability, but the interfacial shear resistance of the sealing material and the structure is even more critical. In fact, the main reason for the failure of general sealing materials is interfacial shear failure. However, the test methods specified in current domestic and foreign standards have the defect of being seriously out of touch with actual working conditions.

[0004] Existing methods mostly test the seepage resistance of the sealing material itself by uniformly distributed load, but lack scientific evaluation of the interface failure mode under shear load. Therefore, developing an indoor testing device that can accurately simulate the interface shear failure mechanism and is compatible with expansion joints of various sizes has become an urgent need to solve the hidden dangers of leakage in engineering.

[0005] Therefore, this utility model provides an indoor testing device for the interfacial shear resistance performance of structural pre-reserved gap sealing materials. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The indoor test device for the interfacial shear resistance of a structural pre-reserved gap sealing material includes a platform assembly; a leveling assembly is fixedly connected to the bottom of the platform assembly; two test specimens are placed on the top of the platform assembly; the two test specimens are symmetrically arranged; a structural gap is formed between the two test specimens; a sealing material is poured into the interior of the structural gap; a clamping assembly is arranged directly above the sealing material, and the clamping assembly does not contact the top of the sealing material.

[0008] Preferably, the platform assembly includes two platform plates arranged symmetrically. The specimen is placed on top of the platform plates. Two sets of symmetrically arranged first through holes are formed on the platform plates. Two symmetrically arranged fixing steel bars are slidably connected to the top of the platform plates, and the fixing steel bars are distributed at positions corresponding to the first through holes. Multiple second through holes are formed on the top of the fixing steel bars, and the second through holes are distributed in a linear array. First bolts are slidably connected inside the first and second through holes. A first nut is threadedly connected to the middle of the first bolt, and the first nut contacts the bottom of the platform plate. Through the above structure, the distance between the two platform plates can be effectively adjusted to accommodate specimens and sealing materials with different structures.

[0009] Preferably, the clamping assembly includes a pressure plate; a fixing post is fixedly connected to the top of the pressure plate; a connecting post is slidably connected to the middle of the fixing post; a second bolt is slidably connected to the middle of the connecting post, and the second bolt passes through the fixing post; a second nut is threadedly connected to the middle of the second bolt; the second nut contacts the middle of the connecting post; with the above structure, the pressure plate can be quickly disassembled, making it convenient for workers to replace pressure plates of different sizes.

[0010] Preferably, the leveling assembly includes a connecting cylinder; the connecting cylinder is fixed to the bottom of the platform plate; there are multiple connecting cylinders, which are distributed in a circumferential array; the connecting cylinder has internal threads; a screw is connected to the internal threads of the connecting cylinder; a support is rotatably connected to the bottom of the screw; with the above structure, the platform plate can be effectively leveled, and the leveling method is simple and convenient.

[0011] Preferably, a protective pad is adhered to the bottom of the support; the protective pad is made of rubber; through the above structure, the protective pad can effectively protect the support and reduce the wear and tear on the support from the ground.

[0012] Preferably, the width of the pressure plate is smaller than the width of the sealing material; the pressure plate is made of stainless steel; through the above structure, the pressure plate can be subjected to uniform force during loading and does not contact the specimens on both sides, thereby improving the accuracy of the test results.

[0013] Preferably, the support is cylindrical in shape and made of stainless steel. With the above structure, the support will be subjected to more uniform force, thereby enhancing its stability and reducing the risk of deformation due to uneven force.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The indoor testing device for the interfacial shear resistance of pre-reserved gap sealing materials described in this utility model, by adjusting two platform plates to appropriate positions, placing a fixing steel bar on top of the platform plates, matching the position of the second through hole on the fixing steel bar with the position of the first through hole on the platform plate, and then using a first bolt to pass through the second through hole and the first through hole, and installing a first nut on the first bolt, thereby fixing the platform plates and the fixing steel bar together, can effectively adjust the distance between the two platform plates, so as to adapt to specimens and sealing materials with different structures, thereby improving the adaptability and flexibility of the device.

[0016] 2. The indoor test device for the interfacial shear resistance of the pre-reserved gap sealing material described in this utility model, by rotating the second nut to remove it from the middle of the second bolt, sliding the second bolt to pull it out from the connecting column, and then sliding the pressure plate to pull the fixed column out from the connecting column, can quickly disassemble the pressure plate, making it convenient for staff to replace pressure plates of different sizes, and greatly improving the flexibility and adaptability of the device. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the first through hole in this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing material in this utility model;

[0021] Figure 4 This is a schematic diagram of the screw structure in this utility model;

[0022] Figure 5 This is a structural schematic diagram of the fixed column in this utility model.

[0023] In the diagram: 1. Platform assembly; 11. Leveling assembly; 12. Specimen; 13. Structural gap; 14. Sealing material; 15. Clamping assembly; 2. Platform plate; 21. First through hole; 22. Fixing steel bar; 23. Second through hole; 24. First bolt; 25. First nut; 3. Pressure plate; 31. Fixing column; 32. Connecting column; 33. Second bolt; 34. Second nut; 4. Connecting cylinder; 41. Screw; 42. Support; 5. Protective pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] like Figure 1 and Figure 3 As shown in the embodiment of this utility model, an indoor testing device for the interfacial shear resistance of a structural pre-reserved gap sealing material includes a platform assembly 1; a leveling assembly 11 is fixedly connected to the bottom of the platform assembly 1; two specimens 12 are placed on the top of the platform assembly 1; the two specimens 12 are symmetrically arranged; a structural gap 13 is formed between the two specimens 12; a sealing material 14 is poured into the interior of the structural gap 13; a clamping assembly 15 is arranged directly above the sealing material 14, and the clamping assembly 15 does not contact the top of the sealing material 14; during operation, the clamping assembly 15 is installed on the testing machine, the level of the platform assembly 1 is adjusted by the leveling assembly 11, the prepared specimens 12 and the sealing material 14 are placed on the top of the platform assembly 1, the height of the clamping assembly 15 is adjusted so that it enters the structural gap 13, close to the top of the sealing material 14 but not in contact with it, and then the testing machine is started to begin the test.

[0027] like Figure 1 , Figure 2 and Figure 4As shown, platform assembly 1 includes platform plate 2; there are two platform plates 2, arranged symmetrically; specimen 12 is placed on top of platform plate 2; two sets of symmetrically arranged first through holes 21 are opened on platform plate 2; two symmetrically arranged fixing steel bars 22 are slidably connected to the top of platform plate 2, and the fixing steel bars 22 are distributed at positions corresponding to the first through holes 21; multiple second through holes 23 are opened on the top of the fixing steel bars 22, and the second through holes 23 are distributed in a linear array; first bolts 24 are slidably connected inside the first through holes 21 and the second through holes 23; a first nut 25 is threadedly connected to the middle of the first bolt 24, and the first nut 25 contacts the bottom of platform plate 2; during operation, it is necessary to... Tests were conducted on specimens 12 and sealing materials 14 with different structures. Based on the structure of specimens 12 and sealing materials 14, the two platform plates 2 were adjusted to appropriate positions. The fixing steel strip 22 was placed on the top of the platform plate 2, and the second through hole 23 on the fixing steel strip 22 was matched with the first through hole 21 on the platform plate 2. Then, the first bolt 24 was passed through the second through hole 23 and the first through hole 21, and the first nut 25 was installed on the first bolt 24, thereby fixing the platform plate 2 and the fixing steel strip 22 together. Through the above structure, the distance between the two platform plates 2 can be effectively adjusted to adapt to specimens 12 and sealing materials 14 with different structures, thereby improving the adaptability and flexibility of the device.

[0028] like Figure 3 and Figure 5 As shown, the clamping assembly 15 includes a pressure plate 3; a fixing post 31 is fixedly connected to the top of the pressure plate 3; a connecting post 32 is slidably connected to the middle of the fixing post 31; a second bolt 33 is slidably connected to the middle of the connecting post 32, and the second bolt 33 passes through the fixing post 31; a second nut 34 is threadedly connected to the middle of the second bolt 33; the second nut 34 contacts the middle of the connecting post 32; during operation, when the structural gap 13 changes, the size of the sealing material 14 will also change, and at the same time, the pressure plate 3 must be replaced. Rotate the second nut 34 to remove it from the middle of the second bolt 33, slide the second bolt 33 to pull it out from the connecting post 32, and then slide the pressure plate 3 to pull the fixing post 31 out from the connecting post 32. Through the above structure, the pressure plate 3 can be quickly disassembled, making it convenient for workers to replace pressure plates 3 of different sizes, greatly improving the flexibility and adaptability of the device.

[0029] like Figure 1 and Figure 4As shown, the leveling assembly 11 includes a connecting cylinder 4; the connecting cylinder 4 is fixed to the bottom of the platform plate 2; there are multiple connecting cylinders 4, which are distributed in a circumferential array; the inside of the connecting cylinder 4 is threaded; a screw 41 is connected to the threaded part of the connecting cylinder 4; a support 42 is rotatably connected to the bottom of the screw 41; during operation, rotating the screw 41 causes the platform plate 2 to rise or fall by advancing or retreating the thread on the screw 41; when the support 42 is damaged, rotating the screw 41 pulls it out of the connecting cylinder 4, thereby removing the support 42. Through the above structure, the platform plate 2 can be effectively leveled. The leveling method is simple and convenient, and the support 42 is detachable, which facilitates its maintenance or replacement.

[0030] like Figure 1 and Figure 4 As shown, a protective pad 5 is bonded to the bottom of the support 42; the protective pad 5 is made of rubber; during operation, the support 42 is in contact with the ground, and the ground may cause wear to the support 42. The protective pad 5 is made of soft rubber and is placed at the bottom of the support 42. Through the above structure, the protective pad 5 can effectively protect the support 42 and reduce the wear of the support 42 by the ground. At the same time, the protective pad 5 can also increase the friction between the support 42 and the ground, reducing the possibility of the support 42 sliding accidentally during the test.

[0031] like Figure 3 and Figure 5 As shown, the width of the pressure plate 3 is smaller than the width of the sealing material 14; the pressure plate 3 is made of stainless steel; during operation, the pressure plate 3 is made of stainless steel, which has good corrosion resistance. The width of the pressure plate 3 is smaller than the width of the sealing material 14. Through the above structure, the pressure plate 3 can be subjected to uniform force during loading and does not come into contact with the specimens 12 on both sides, thereby improving the accuracy of the test results.

[0032] like Figure 1 and Figure 4 As shown, the support 42 is cylindrical in shape and made of stainless steel. During operation, the support 42 is cylindrical and made of stainless steel, which has good corrosion resistance. Through the above structure, the support 42 will be subjected to more uniform force, thereby enhancing its stability, reducing the risk of deformation due to uneven force, and also reducing the possibility of the support 42 rusting due to moisture erosion.

[0033] During operation, the clamping assembly 15 is installed on the testing machine. The level of the platform assembly 1 is adjusted by the leveling assembly 11. The prepared specimen 12 and sealing material 14 are placed on top of the platform assembly 1. The height of the clamping assembly 15 is adjusted so that it enters the structural gap 13, close to the top of the sealing material 14 but not in contact with it. The testing machine is then started to begin the test. Tests need to be conducted on specimens 12 and sealing materials 14 with different structures. According to the structure of specimens 12 and sealing materials 14, the two platform plates 2 are adjusted to the appropriate positions. The fixing steel strip 22 is placed on top of the platform plate 2. The second through hole 23 on the fixing steel strip 22 is matched with the first through hole 21 on the platform plate 2. Then, the first bolt 24 is used to pass through the second through hole 23. The first nut 25 is installed on the first bolt 24 through the first through hole 21, thereby fixing the platform plate 2 and the fixing steel bar 22 together. Through the above structure, the distance between the two platform plates 2 can be effectively adjusted to accommodate specimens 12 and sealing materials 14 with different structures, thereby improving the adaptability and flexibility of the device. When the structural gap 13 changes, the size of the sealing material 14 will also change. At the same time, the pressure plate 3 needs to be replaced. Rotate the second nut 34 to remove it from the middle of the second bolt 33, slide the second bolt 33 to pull it out from the connecting column 32, and then slide the pressure plate 3 to pull the fixing column 31 out from the connecting column 32. Through the above structure, the pressure plate 3 can be quickly disassembled. This design facilitates the replacement of pressure plates 3 of different sizes by staff, greatly improving the flexibility and adaptability of the device. Rotating the screw 41 causes the platform plate 2 to rise or fall through the threaded movement. When the support 42 is damaged, rotating the screw 41 pulls it out of the connecting cylinder 4, thus removing the support 42. This structure effectively levels the platform plate 2, providing a simple and convenient leveling method. The support 42 is detachable, facilitating maintenance and replacement. Since the support 42 is in contact with the ground, which may cause wear, a protective pad 5 is installed at the bottom of the support 42. The protective pad 5 is made of soft rubber, and through this structure, it effectively protects the support 42 and reduces wear. The support 42 is less likely to be worn by the ground, and the protective pad 5 can also increase the friction between the support 42 and the ground, reducing the possibility of the support 42 sliding accidentally during the test. The pressure plate 3 is made of stainless steel, which has good corrosion resistance. The width of the pressure plate 3 is smaller than the width of the sealing material 14. Through the above structure, the pressure plate 3 can be evenly stressed during loading and does not come into contact with the specimens 12 on both sides, thereby improving the accuracy of the test results. The support 42 is cylindrical and made of stainless steel, which has good corrosion resistance. Through the above structure, the support 42 will be more evenly stressed, thereby enhancing its stability, reducing the risk of deformation due to uneven stress, and also reducing the possibility of the support 42 rusting due to moisture corrosion.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An indoor testing device for the interfacial shear resistance of a structural pre-reserved gap sealing material, comprising a platform assembly (1); characterized in that: A leveling component (11) is fixedly connected to the bottom of the platform component (1); two test pieces (12) are placed on the top of the platform component (1); the two test pieces (12) are arranged symmetrically; a structural gap (13) is formed between the two test pieces (12); a sealing material (14) is poured into the interior of the structural gap (13); a pressing component (15) is provided directly above the sealing material (14), and the pressing component (15) does not contact the top of the sealing material (14).

2. The indoor testing device for the interfacial shear resistance of structural pre-reserved gap sealing material according to claim 1, characterized in that: The platform assembly (1) includes a platform plate (2); there are two platform plates (2) arranged symmetrically; the specimen (12) is placed on the top of the platform plate (2); two sets of first through holes (21) arranged symmetrically are provided on the platform plate (2); two fixed steel bars (22) arranged symmetrically are slidably connected to the top of the platform plate (2), and the fixed steel bars (22) are distributed at positions corresponding to the first through holes (21); multiple second through holes (23) are provided on the top of the fixed steel bars (22), and the second through holes (23) are distributed in a linear array; a first bolt (24) is slidably connected inside the first through hole (21) and the second through hole (23); a first nut (25) is threadedly connected to the middle of the first bolt (24), and the first nut (25) contacts the bottom of the platform plate (2).

3. The indoor testing device for the interfacial shear resistance of structural pre-reserved gap sealing material according to claim 1, characterized in that: The clamping assembly (15) includes a pressure plate (3); a fixing post (31) is fixedly connected to the top of the pressure plate (3); a connecting post (32) is slidably connected to the middle of the fixing post (31); a second bolt (33) is slidably connected to the middle of the connecting post (32), and the second bolt (33) penetrates the fixing post (31); a second nut (34) is threadedly connected to the middle of the second bolt (33); the second nut (34) contacts the middle of the connecting post (32).

4. The indoor testing device for the interfacial shear resistance of structural pre-reserved gap sealing material according to claim 1, characterized in that: The leveling assembly (11) includes a connecting cylinder (4); the connecting cylinder (4) is fixed to the bottom of the platform plate (2); there are multiple connecting cylinders (4) and they are distributed in a circumferential array; the connecting cylinder (4) has a thread inside; the connecting cylinder (4) is threaded to a screw (41); the bottom of the screw (41) is rotatably connected to a support (42).

5. The indoor testing device for the interfacial shear resistance of structural pre-reserved gap sealing material according to claim 4, characterized in that: The bottom of the support (42) is bonded with a protective pad (5); the protective pad (5) is made of rubber.

6. The indoor testing device for the interfacial shear resistance of structural pre-reserved gap sealing material according to claim 3, characterized in that: The width of the pressure plate (3) is smaller than the width of the sealing material (14); the pressure plate (3) is made of stainless steel.

7. The indoor testing device for the interfacial shear resistance of structural pre-reserved gap sealing material according to claim 4, characterized in that: The support (42) is cylindrical in shape and is made of stainless steel.

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