A test device and method for combined action of shear performance test of board interface

Abstract

The application discloses a test device and method for testing the shear performance of a composite board interface, comprising a counterforce wall, a horizontal loading mechanism, a profiled steel plate clamping mechanism and a placing mechanism, the horizontal loading mechanism is arranged between the counterforce wall and the profiled steel plate clamping mechanism; the other end of the profiled steel plate clamping device is connected with a protruding part of a profiled steel plate of the composite board, a concrete board of the composite board is placed on the placing mechanism, and the placing mechanism limits the horizontal movement of the concrete board; a measuring sensor is arranged in the horizontal loading mechanism, a horizontal pulling force is applied to the profiled steel plate through the horizontal loading mechanism, and test data of a test model are obtained. The device can better simulate the bonding and sliding behavior of the profiled steel plate-concrete interface, and accurately test the interface shear bearing capacity; the device has the characteristics of high measurement accuracy, reasonable stress and good accuracy, and the axial tension loading mode can avoid the buckling deformation of the profiled steel plate compared with the axial compression, thereby improving the accuracy and application range of the test.

Description

Technical Field

[0001] This invention relates to the field of structural engineering technology, and specifically to a test apparatus and method for testing the shear resistance of composite slab interfaces. Background Technology

[0002] In the field of civil engineering, steel-concrete composite structures can fully leverage the advantages of both steel and concrete, ensuring harmonious overall operation, rational stress distribution, and convenient construction and use. Due to their superior performance and good economic benefits, composite structures have been widely used in the construction of high-rise, super high-rise, large-span buildings, and bridges since their introduction to China. Profiled steel sheet-concrete composite slabs are a typical example of composite structures. By pouring concrete onto profiled steel sheets of various shapes and through various reinforcement measures to ensure interaction between the two materials, they can work together to maximize their material advantages. During construction, the profiled steel sheets serve as a construction platform to bear construction loads and as formwork for pouring concrete, replacing the traditional reinforced concrete formwork process and improving construction efficiency. During use, from a stress perspective, the profiled steel sheets can replace some of the bottom tensile reinforcement to bear the load. Therefore, profiled steel sheet-concrete composite slabs have many advantages, including light weight, convenient construction, and good economic efficiency.

[0003] To fully utilize the combined effect between profiled steel sheets and concrete and ensure safe and reliable interfacial bonding between materials, researchers at home and abroad have conducted a large number of tests on the interfacial bonding performance of profiled steel sheets and concrete, among which the push-out test is a relatively common test method.

[0004] However, existing push-out tests require embedding two concrete blocks into the shear keys on both sides of the central I-beam, resulting in high specimen fabrication difficulty, weight, and cost. Furthermore, due to the relatively thin profiled steel sheet, it is prone to buckling deformation under axial compression; therefore, the push-out test loading method is not suitable for testing the interfacial bond performance of profiled steel sheet-concrete composite slabs. Summary of the Invention

[0005] To address the aforementioned deficiencies in existing technologies, a test apparatus and method for testing the shear resistance of composite panel interfaces are provided, which simplifies the test apparatus, improves the accuracy and applicability of the test, and enhances the correctness of the test results.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A test apparatus for testing the interfacial shear resistance of a composite panel, wherein the composite panel, as the test piece, is formed of profiled steel sheet and concrete, with the profiled steel sheet protruding from the concrete slab; characterized in that it includes a reaction wall, a horizontal loading mechanism, a profiled steel sheet clamping mechanism, and a placement mechanism; one end of the horizontal loading mechanism is fixed to the reaction wall, and the other end is connected to the profiled steel sheet clamping mechanism; the other end of the profiled steel sheet clamping mechanism is connected to the protruding portion of the profiled steel sheet of the composite panel; the concrete slab of the composite panel is placed on the placement mechanism, and the placement mechanism restricts the horizontal movement of the concrete slab; a measuring sensor is provided in the horizontal loading mechanism, and the horizontal tensile force is applied to the profiled steel sheet through the horizontal loading mechanism to obtain the test data of the test model.

[0008] According to the above technical solution, the horizontal loading mechanism includes a horizontal actuator assembly, a measuring sensor, a vertical rotation structure, and a horizontal rotation structure. The vertical rotation structure is located at both ends of the horizontal actuator assembly. The other end of one vertical rotation structure is connected to the reaction wall, and the other end of the other vertical rotation structure is connected to the horizontal rotation structure. The other end of the horizontal rotation structure is connected to the profiled steel sheet clamping mechanism. The measuring sensor is located between the vertical rotation structure and the horizontal actuator assembly, or between the vertical rotation structure and the horizontal rotation structure.

[0009] According to the above technical solution, the centerlines of the horizontal actuator assembly, the measuring sensor, the vertical rotation device, and the horizontal rotation device are aligned and located in the same horizontal plane.

[0010] According to the above technical solution, the horizontal actuator assembly includes a horizontal actuator and a reaction steel plate. The reaction steel plate is fixed at both ends of the horizontal actuator, and the center lines of the horizontal actuator and the reaction steel plate coincide and are located in the same horizontal plane. The vertical rotation device and the horizontal rotation device adopt hinges for vertical rotation and horizontal rotation, respectively.

[0011] According to the above technical solution, the profiled steel sheet clamping mechanism includes a fixed steel plate, an upper clamping plate, a lower clamping plate, an adjusting plate, and fastening bolts. The fixed steel plate is fixedly connected to the end of the horizontal loading mechanism. The upper clamping plate is fixed on the fixed steel plate. A vertical first sliding groove is provided on the upper clamping plate. The adjusting plate is fixed in the first sliding groove of the upper clamping plate with adjustable height. A horizontal second sliding groove is provided on the side of the adjusting plate. Several lower clamping plates are fixed in the second sliding groove with adjustable horizontal position. Fastening bolts are provided through the adjusting plate. Threaded holes are provided at corresponding positions on the upper clamping plate. The upper and lower clamping plates clamp the profiled steel sheet through the fastening bolts.

[0012] According to the above technical solution, the lower surface of the upper clamping plate and the upper surface of the lower clamping plate are provided with interlocking conical protrusions.

[0013] According to the above technical solution, the placement mechanism includes a horizontal placement steel plate assembly, a front reaction plate, a rear reaction plate, and a movable steel plate. The horizontal placement steel plate assembly is fixed on an external operating platform, and the height of the top plate of the horizontal placement steel plate assembly can be adjusted according to the thickness of the composite concrete slab. The front and rear reaction plates are respectively located on two opposite sides of the horizontal placement steel plate assembly, with the rear reaction plate positioned close to the reaction wall and its height being equal to that of the horizontal placement steel plate assembly. The movable steel plate is located on the side of the front reaction plate near the horizontal placement steel plate assembly, with adjustable height and horizontal position. By adjusting the height of the movable steel plate and the horizontal placement steel plate assembly, the two sides of the composite concrete slab are secured between the rear reaction plate and the movable steel plate.

[0014] According to the above technical solution, the horizontal steel plate assembly includes several adjusting screws and nuts, as well as a horizontal steel plate. The horizontal steel plate is set on an external operating table by adjusting the screws and nuts, and the height of the horizontal steel plate is controlled by adjusting the screws and nuts. The concrete slab of the composite plate is placed on the upper surface of the horizontal steel plate.

[0015] According to the above technical solution, the reaction wall is vertically arranged on the external operating platform. Several mounting holes at different heights are provided on the vertical surface of the reaction wall. According to the test requirements, the horizontal loading mechanism is fixed in the mounting holes at the corresponding heights of the reaction wall by bolts.

[0016] A test apparatus and method for testing the shear resistance of composite panel interfaces, characterized in that: the test apparatus for testing the shear resistance of composite panel interfaces as described above is used, and the method includes the following steps:

[0017] S1: Adjust the placement mechanism according to the actual thickness and size of the profiled steel sheet-concrete composite slab so that the concrete slab of the composite slab is clamped by the placement mechanism;

[0018] S2: Install the horizontal loading mechanism between the reaction wall and the profiled steel sheet clamping mechanism, and ensure that the axis of the horizontal loading mechanism coincides with the central axis of the composite plate;

[0019] S3: The protruding profiled steel sheet of the composite panel is clamped by the profiled steel sheet clamping mechanism;

[0020] S4: As required by the test, horizontal axial tension is applied to the composite plate to be tested through a horizontal loading mechanism. The slippage effect between the profiled steel sheet and the concrete is observed. The load values ​​at each level are obtained through the tension sensor. Finally, the failure mode and load-displacement curve of the test model are obtained.

[0021] The present invention has the following beneficial effects:

[0022] 1. By fixing the concrete slab portion of the composite slab to a placement mechanism and limiting its horizontal movement, the device then clamps the profiled steel sheet portion of the composite slab using a profiled steel sheet clamping mechanism. A horizontal loading mechanism equipped with measuring sensors applies a horizontal tensile force to the profiled steel sheet, thereby obtaining the failure mode and load-displacement curve of the test model. This device can effectively simulate the bond-slip behavior at the profiled steel sheet-concrete interface and accurately test the interfacial shear capacity. It features high measurement accuracy, reasonable stress distribution, and good overall accuracy. Furthermore, the axial tensile loading method, compared to axial compression, avoids buckling deformation of the profiled steel sheet, improving the accuracy and applicability of the test.

[0023] 2. With adjustable spacing between the upper and lower decks (for profiled steel sheets of different thicknesses) and adjustable height of the horizontal placement steel plate assembly and movable steel plate (for concrete slabs of different thicknesses), this device can meet the testing requirements of composite slabs of various thicknesses.

[0024] 3. The conical protrusions of the upper and lower clamping plates can effectively fix the flanges of the profiled steel sheet, so that the profiled steel sheet can be evenly stressed, avoiding the consequences of tearing of the hole wall of the profiled steel sheet that may be caused by traditional bolt connection, as well as the cumbersome process of pre-drilling holes.

[0025] 4. The centerlines of the horizontal actuator assembly, measuring sensor, vertical rotation device, and horizontal rotation device are aligned and located in the same horizontal plane, and the design of the vertical rotation device and horizontal rotation device is also considered; this ensures that the axial tension of the combined plate test model is maintained, thereby improving the accuracy, applicability, and precision of the test. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the combined board used for testing;

[0027] Figure 2 This is an overall schematic diagram of an embodiment provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the horizontal loading mechanism provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the profiled steel sheet clamping mechanism provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the storage mechanism provided in an embodiment of the present invention;

[0031] Figure 6 This is a usage state diagram of an embodiment provided by the present invention;

[0032] In the diagram, 1. Corrugated steel sheet; 2. Concrete slab; 3. Reaction wall; 4. Horizontal loading mechanism; 4-1. Horizontal actuator assembly; 4-11. Horizontal actuator; 4-12. Reaction steel plate; 4-2. Measuring sensor; 4-3. Vertical rotation structure; 4-4. Horizontal rotation structure; 5. Corrugated steel sheet clamping mechanism; 5-1. Fixed steel plate; 5-2. Upper clamping plate; 5-3. Lower clamping plate; 5-4. Adjusting plate; 5-5. First slide groove; 5-6. Second slide groove; 5-7. Fastening bolt; 6. Placement mechanism; 6-1. Horizontal placement steel plate assembly; 6-11. Adjusting screw and nut; 6-12. Horizontal steel plate; 6-2. Front reaction plate; 6-3. Rear reaction plate; 6-4. Movable steel plate; 7. External operating platform. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Reference Figures 1-5 As shown, this invention provides a test device for testing the interfacial shear resistance of a composite panel. The composite panel, as the test piece, is formed by a profiled steel sheet 1 and a concrete slab 2, with the profiled steel sheet protruding from the concrete slab. The device includes a reaction wall 3, a horizontal loading mechanism 4, a profiled steel sheet clamping mechanism 5, and a placement mechanism 6. One end of the horizontal loading mechanism is fixed to the reaction wall, and the other end is connected to the profiled steel sheet clamping mechanism. The other end of the profiled steel sheet clamping mechanism is connected to the protruding portion of the profiled steel sheet of the composite panel. The concrete slab of the composite panel is placed on the placement mechanism, which restricts the horizontal movement of the concrete slab. A measuring sensor is installed within the horizontal loading mechanism. A horizontal tensile force is applied to the profiled steel sheet through the horizontal loading mechanism to obtain test data of the test model.

[0035] This embodiment fixes the concrete slab portion of the composite panel to a placement mechanism, which then limits the horizontal movement of this portion. Subsequently, a profiled steel sheet clamping mechanism holds the profiled steel sheet portion of the composite panel, and a horizontal loading mechanism equipped with measuring sensors applies a horizontal tensile force to the profiled steel sheet, thereby obtaining the failure mode and load-displacement curve of the test model. This device can effectively simulate the bond-slip behavior at the profiled steel sheet-concrete interface and accurately test the interfacial shear capacity. It features high measurement accuracy, reasonable stress distribution, and good overall accuracy. Furthermore, the axial tensile loading method, compared to axial compression, avoids buckling deformation of the profiled steel sheet, improving the accuracy and applicability of the test.

[0036] Specifically, the horizontal loading mechanism includes a horizontal actuator assembly 4-1, a measuring sensor 4-2, a vertical rotation structure 4-3, and a horizontal rotation structure 4-4. The vertical rotation structures are located at both ends of the horizontal actuator assembly. One end of the vertical rotation structure is connected to the reaction wall, and the other end of the vertical rotation structure is connected to the horizontal rotation structure. The other end of the horizontal rotation structure is connected to the profiled steel plate clamping mechanism. The measuring sensor is located between the vertical rotation structure and the horizontal actuator assembly, or between the vertical rotation structure and the horizontal rotation structure.

[0037] Furthermore, the centerlines of the horizontal actuator assembly, the measuring sensor, the vertical rotation device, and the horizontal rotation device are aligned and located in the same horizontal plane.

[0038] Furthermore, the horizontal actuator assembly includes a horizontal actuator 4-11 and a reaction steel plate 4-12. The reaction steel plate is fixed at both ends of the horizontal actuator, and the centerlines of the horizontal actuator and the reaction steel plate coincide and are located in the same horizontal plane. The vertical rotation device and the horizontal rotation device adopt hinges for vertical rotation and horizontal rotation, respectively.

[0039] Specifically, the profiled steel sheet clamping mechanism includes a fixed steel plate 5-1, an upper clamping plate 5-2, a lower clamping plate 5-3, an adjusting plate 5-4, and fastening bolts 5-7. The fixed steel plate is fixedly connected to the end of the horizontal loading mechanism. The upper clamping plate is fixed to the fixed steel plate, and a vertical first sliding groove 5-5 is provided on the upper clamping plate. The adjusting plate is fixed in the first sliding groove of the upper clamping plate with adjustable height. By controlling the fixed height of the adjusting plate, the upper and lower clamping plates clamp the profiled steel sheet of the composite plate. A horizontal second sliding groove 5-6 is provided on the side of the adjusting plate, and several lower clamping plates are fixed in the second sliding groove with adjustable horizontal position. By controlling the horizontal distance between the lower clamping plates, the lower clamping plates can adapt to profiled steel sheets of different widths of composite plates. The fastening bolts pass through the adjusting plate, and threaded holes are provided at corresponding positions on the upper clamping plate. By screwing the fastening bolts into the threaded holes, the position between the adjusting plate and the upper clamping plate is fixed, thereby indirectly clamping the profiled steel sheet between the upper and lower clamping plates.

[0040] Furthermore, the lower surface of the upper clamping plate and the upper surface of the lower clamping plate are provided with interlocking conical protrusions. The conical protrusions of the upper and lower clamping plates can effectively fix the flanges of the profiled steel sheet, so that the profiled steel sheet can be subjected to uniform force, avoiding the consequences of tearing of the profiled steel sheet hole wall that may be caused by traditional bolt connection, as well as the cumbersome process of pre-drilling holes.

[0041] Specifically, the placement mechanism includes a horizontal placement steel plate assembly 6-1, a front reaction plate 6-2, a rear reaction plate 6-3, and a movable steel plate 6-4. The horizontal placement steel plate assembly is fixed on the external operating platform 7, and the height of the top plate of the horizontal placement steel plate assembly can be adjusted according to the thickness of the composite concrete slab. The front and rear reaction plates are respectively located on two opposite sides of the horizontal placement steel plate assembly, with the rear reaction plate positioned close to the reaction wall and its height being equal to that of the horizontal placement steel plate assembly. The movable steel plate is located on the side of the front reaction plate near the horizontal placement steel plate assembly, with adjustable height and horizontal position. By adjusting the height of the movable steel plate and the horizontal placement steel plate assembly, the two sides of the composite concrete slab are secured between the rear reaction plate and the movable steel plate.

[0042] Preferably, the movable steel plate has several vertically arranged elongated holes, and several guide rods matching the positions of the elongated holes are fixed on the front reaction plate. The guide rods have external threads. Nuts are provided on both sides of the movable steel plate, and the movable steel plate is fixed to the guide rods by the nuts. The distance between the movable steel plate and the rear reaction plate is adjusted by two nuts to accommodate concrete slabs of different specifications. The nuts only restrict the horizontal movement of the movable steel plate. The bottom of the movable steel plate rests on the horizontal placement steel plate assembly, and the height of the movable steel plate is adjusted according to the horizontal placement steel plate assembly.

[0043] Furthermore, the horizontal steel plate assembly includes several adjusting screws and nuts 6-11, and a horizontal steel plate 6-12. The horizontal steel plate is mounted on the external operating platform via the adjusting screws and nuts, and its height is controlled by adjusting the screws and nuts. The concrete slab of the composite slab is placed on the upper surface of the horizontal steel plate. By setting a horizontal steel plate assembly with a fixed adjustable height, this device can be used for composite slabs of various specifications. The height of the horizontal steel plate is adjusted according to the thickness of the concrete slab of the composite slab, so that the height difference between the upper surface of the horizontal steel plate and the top surface of the rear reaction plate matches the height of the concrete slab of the composite slab.

[0044] Specifically, the reaction wall is vertically arranged on the external operating platform. Several mounting holes at different heights are provided on the vertical surface of the reaction wall. According to the test requirements, the horizontal loading mechanism is fixed in the mounting holes at the corresponding heights of the reaction wall by bolts.

[0045] A test apparatus and method for testing the shear resistance of composite panel interfaces, characterized in that: the test apparatus for testing the shear resistance of composite panel interfaces as described above is used, and the method includes the following steps:

[0046] S1: Adjust the placement mechanism according to the actual thickness and size of the profiled steel sheet-concrete composite slab, so that the concrete slab of the composite slab is clamped by the placement mechanism. Specifically, the height of the upper surface of the horizontal steel plate is adjusted by several adjusting screws and nuts, and the position of the composite slab is fixed by adjusting the vertical and horizontal distances of the movable steel plate relative to the rear reaction steel plate; thus meeting the testing requirements of composite slabs of various specifications.

[0047] S2: Install the horizontal loading mechanism between the reaction wall and the profiled steel sheet clamping mechanism, ensuring that the axis of the horizontal loading mechanism coincides with the central axis of the composite plate. Install the horizontal loading mechanism and fix it to the reaction wall with bolts. To ensure easy observation of the test phenomena, the height of the horizontal loading device should not be too high. Additionally, ensure that the axis of the horizontal loading mechanism coincides with the central axis of the composite plate test model.

[0048] S3: The profiled steel sheet protruding from the composite plate is clamped by the profiled steel sheet clamping mechanism; the position of the lower clamping plate in the second slide groove is adjusted to adapt to the flange size of the profiled steel sheet, and then the vertical fastening bolts are adjusted to clamp the profiled steel sheet between the upper and lower clamping steel plates;

[0049] S4: As required by the test, horizontal axial tension is applied to the composite plate to be tested through a horizontal loading mechanism. The slippage effect between the profiled steel sheet and the concrete is observed. The load values ​​at each level are obtained through the tension sensor. Finally, the failure mode and load-displacement curve of the test model are obtained.

[0050] The above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent changes made in accordance with the claims of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A test apparatus for testing the interfacial shear resistance of a composite slab, wherein the composite slab, as the test piece, is formed of profiled steel sheet and concrete, with the profiled steel sheet protruding from the concrete slab; characterized in that: The system includes a reaction wall, a horizontal loading mechanism, a profiled steel sheet clamping mechanism, and a placement mechanism. One end of the horizontal loading mechanism is fixed to the reaction wall, and the other end is connected to the profiled steel sheet clamping mechanism. The other end of the profiled steel sheet clamping mechanism is connected to the protruding part of the composite panel profiled steel sheet. The composite panel concrete slab is placed on the placement mechanism, which restricts the horizontal movement of the concrete slab. A measuring sensor is installed inside the horizontal loading mechanism to apply a horizontal tensile force to the profiled steel sheet and obtain test data of the test model. The horizontal loading mechanism includes a horizontal actuator assembly, a measuring sensor, a vertical rotation structure, and a horizontal rotation structure. The vertical rotation structure is located at both ends of the horizontal actuator assembly. One end of the vertical rotation structure is connected to the reaction wall, and the other end of the vertical rotation structure is connected to the horizontal rotation structure. The other end of the horizontal rotation structure is connected to the profiled steel sheet clamping mechanism. The measuring sensor is located between the vertical rotation structure and the horizontal actuator assembly, or between the vertical rotation structure and the horizontal rotation structure. The horizontal actuator assembly includes a horizontal actuator and a reaction steel plate. The reaction steel plate is fixed at both ends of the horizontal actuator, and the centerlines of the horizontal actuator and the reaction steel plate coincide and are located in the same horizontal plane. The vertical rotation device and the horizontal rotation device adopt hinges for vertical rotation and horizontal rotation, respectively. The profiled steel sheet clamping mechanism includes a fixed steel plate, an upper clamping plate, a lower clamping plate, an adjusting plate, and fastening bolts. The fixed steel plate is fixedly connected to the end of the horizontal loading mechanism. The upper clamping plate is fixed on the fixed steel plate. A vertical first sliding groove is provided on the upper clamping plate. The adjusting plate is fixed in the first sliding groove of the upper clamping plate with adjustable height. A horizontal second sliding groove is provided on the side of the adjusting plate. Several lower clamping plates are fixed in the second sliding groove with adjustable horizontal position. Fastening bolts are provided through the adjusting plate. Threaded holes are provided at corresponding positions on the upper clamping plate. The upper and lower clamping plates clamp the profiled steel sheet through the fastening bolts. The placement mechanism includes a horizontal placement steel plate assembly, a front reaction plate, a rear reaction plate, and a movable steel plate. The horizontal placement steel plate assembly is fixed to an external operating platform, and the height of the top plate of the horizontal placement steel plate assembly is adjustable according to the thickness of the composite concrete slab. The front and rear reaction plates are respectively located on two opposite sides of the horizontal placement steel plate assembly, with the rear reaction plate positioned close to the reaction wall and its height equal to that of the horizontal placement steel plate assembly. The movable steel plate is located on the side of the front reaction plate near the horizontal placement steel plate assembly, with adjustable height and horizontal position. By adjusting the height of the movable steel plate and the horizontal placement steel plate assembly, the two sides of the composite concrete slab are secured between the rear reaction plate and the movable steel plate. The horizontal steel plate assembly includes several adjusting screws and nuts, as well as a horizontal steel plate. The horizontal steel plate is mounted on an external operating platform via the adjusting screws and nuts. The height of the horizontal steel plate is controlled by adjusting the screws and nuts. The concrete slab of the composite panel is placed on the upper surface of the horizontal steel plate.

2. The test apparatus for testing the shear resistance of composite panel interfaces according to claim 1, characterized in that: The centerlines of the horizontal actuator assembly, measuring sensor, vertical rotation device, and horizontal rotation device are aligned and located in the same horizontal plane.

3. The test apparatus for testing the shear resistance of composite panel interfaces according to claim 1, characterized in that: The lower surface of the upper clamping plate and the upper surface of the lower clamping plate are provided with interlocking conical protrusions.

4. The test apparatus for testing the shear resistance of composite panel interfaces according to claim 1, characterized in that: The reaction wall is vertically installed on the external operating platform. Several mounting holes at different heights are provided on the vertical surface of the reaction wall. According to the test requirements, the horizontal loading mechanism is fixed in the mounting holes at the corresponding heights of the reaction wall by bolts.

5. A test apparatus and method for testing the shear resistance of composite panel interfaces, characterized in that: The test apparatus for testing the interfacial shear resistance of composite panels as described in any one of claims 1-4 includes the following steps: S1: Adjust the placement mechanism according to the actual thickness and size of the profiled steel sheet-concrete composite slab so that the concrete slab of the composite slab is clamped by the placement mechanism; S2: Install the horizontal loading mechanism between the reaction wall and the profiled steel sheet clamping mechanism, and ensure that the axis of the horizontal loading mechanism coincides with the central axis of the composite plate; S3: The protruding profiled steel sheet of the composite panel is clamped by the profiled steel sheet clamping mechanism; S4: As required by the test, horizontal axial tension is applied to the composite plate to be tested through a horizontal loading mechanism. The slippage effect between the profiled steel sheet and the concrete is observed. The load values ​​at each level are obtained through the tension sensor. Finally, the failure mode and load-displacement curve of the test model are obtained.

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