A corrugated steel web concrete composite member for push-out testing

Abstract

This invention proposes a corrugated steel web concrete composite member for push-out tests. The member includes: a bearing plate, a steel plate, a stiffening plate, a perforated corrugated steel plate, a through-bar reinforcement, and a concrete slab. The corrugated steel plate comprises a single wave. The through-bar passes perpendicularly through the center of the perforation in the corrugated steel plate, connecting the perforated corrugated steel plate to the concrete slab. Both ends of the perforated corrugated steel plate are perpendicularly embedded in the concrete slab. The stiffening plate is welded perpendicularly to the left and right sides of the middle of the perforated corrugated steel plate, respectively. The distance between the stiffening plate and the concrete slab is greater than the wavelength of one corrugated steel web. The upper end of the stiffening plate is welded perpendicularly to the bearing plate, and the lower end is welded perpendicularly to the steel plate. The center of the bearing plate and the steel plate is located in the middle of the perforated corrugated steel plate. This application fully utilizes the wrinkle effect of the corrugated steel plate by directly loading the bearing plate and stiffening plate and increasing the exposed length of the corrugated steel plate, thus reflecting the actual mechanical properties of the connector.

Description

Technical Field

[0001] This application relates to the field of structural engineering technology, and in particular to a corrugated steel web concrete composite member for push-out testing. Background Technology

[0002] Corrugated steel web PC composite box girder bridges, as a novel type of composite bridge structure, offer superior shear resistance, higher out-of-plane stiffness, and enhanced aesthetic appeal compared to flat steel web bridges. The corrugated steel web's wrinkling effect also improves prestressing efficiency, effectively mitigating structural defects caused by temperature stress and creep. The connection quality between the corrugated steel web and the concrete slab is crucial to the composite structure's load-bearing performance. Shear connectors, as core connection components, primarily transfer shear force and resist uplift. Embedded shear connectors, with holes in the web through which reinforcing bars pass, are embedded into the concrete slab to connect the composite beams, fully utilizing material properties. This method involves minimal welding, simplifies construction, and ensures the joint stiffness matches that of the concrete slab. Current experimental studies mostly involve fabricating specimens with I-beams in direct contact with concrete, failing to fully exploit the wrinkling effect of the corrugated steel web.

[0003] Therefore, it is urgent to propose a corrugated steel web concrete composite member for push-out tests, so as to give full play to the wrinkle effect of the corrugated steel plate, reflect the actual mechanical properties of the connector, ensure the authenticity and effectiveness of the push-out test of the embedded corrugated steel web shear connector, and provide a foundation for the research of corrugated steel plate embedded shear connectors. Summary of the Invention

[0004] This application provides a corrugated steel web concrete composite member for push-out testing, which can be used to solve the technical problem that the wrinkle effect of corrugated steel web cannot be fully utilized.

[0005] This application provides a corrugated steel web concrete composite member for push-out testing, the member comprising: a bearing plate, a steel plate, a reinforcing plate, a corrugated steel plate, through-bar reinforcement, and a concrete slab;

[0006] The corrugated steel plate is corrugated and contains one corrugation; multiple openings are provided at both ends of the corrugated steel plate;

[0007] The through-bar passes perpendicularly through the center of the opening in the corrugated steel plate;

[0008] The through-bar connects the corrugated steel plate and the concrete slab;

[0009] The corrugated steel plate is vertically embedded in the concrete slab at both ends;

[0010] The stiffening plates are welded perpendicularly to the middle side of the perforated corrugated steel plate.

[0011] Furthermore, the concrete slab comprises concrete.

[0012] Furthermore, the distance between the stiffening plate and the concrete slab is greater than the wavelength of one corrugated steel web.

[0013] Furthermore, the upper end of the stiffening plate is welded perpendicularly to the bearing plate.

[0014] Furthermore, the lower end of the stiffening plate is welded perpendicularly to the steel plate.

[0015] Furthermore, the center of the pressure plate and the center of the steel plate are located in the middle of the perforated corrugated steel plate.

[0016] Furthermore, the distance between the bottom surface of the steel plate and the bottom surface of the concrete slab is greater than 20cm.

[0017] The present invention provides a corrugated steel web concrete composite member for push-out testing. By directly loading the bearing plate and stiffening plate and increasing the exposed length of the corrugated steel plate, it fully reflects the wrinkling effect of the corrugated steel plate and the actual mechanical properties of the connector. This ensures the authenticity and effectiveness of the push-out test of the embedded corrugated steel web shear connector and provides a foundation for the research of corrugated steel plate embedded shear connectors. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a corrugated steel web concrete composite member used for the push-out test in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the corrugated steel web concrete composite member (excluding concrete) used for the push-out test in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the dimensions of the corrugated steel web concrete composite member used for the push-out test in an embodiment of the present invention;

[0021] Explanation of reference numerals in the attached drawings: 1-Bearing plate, 2-Steel plate, 3-Reinforcing plate, 4-Corrugated steel plate, 5-Through reinforcing bar, 6-Concrete slab, 61-Inner side of concrete slab, 62-Bottom surface of concrete slab, L-Spacing between reinforcing plate and concrete slab, d-Spacing between bottom surface of steel plate and bottom surface of concrete slab. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] The following description, with reference to the accompanying drawings, describes the corrugated steel web concrete composite member and its implementation method for the push-out test according to an embodiment of the present invention. First, the corrugated steel web concrete composite member for the push-out test according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of a corrugated steel web concrete composite member used for a push-out test in one embodiment of the present invention.

[0025] like Figure 1 As shown, the corrugated steel web concrete composite member used for the push-out test includes: a bearing plate 1, a steel plate 2, a reinforcing plate 3, a corrugated steel plate 4, a through-bar 5, and a concrete slab 6.

[0026] A corrugated steel web concrete composite member is used for push-out tests. The corrugated steel plate 4 contains one corrugation. A through-bar 5 passes vertically through the center of the opening in the corrugated steel plate 4 and connects the perforated corrugated steel plate 4 to the concrete slab 6. The two ends of the perforated corrugated steel plate 4 are vertically embedded in the concrete slab 6. The stiffening plate 3 is welded vertically to the left and right sides of the middle of the perforated corrugated steel plate 4, respectively. The distance L between the stiffening plate 3 and the inner surface 61 of the concrete slab is greater than the wavelength of one corrugated steel web. The upper end of the stiffening plate 3 is welded vertically to the bearing plate 1, and the lower end of the stiffening plate 3 is welded vertically to the steel plate 2. The center of the bearing plate 1 and the steel plate 2 is located in the middle of the perforated corrugated steel plate 4. The distance d between the bottom surface of the steel plate 2 and the bottom surface 62 of the concrete slab is greater than 20 cm.

[0027] It should be noted that the dimensions of the bearing plate 1, steel plate 2, stiffening plate 3, and perforated corrugated steel plate 4 are determined based on structural stress analysis and testing equipment, and are vertically connected by welding; the distance d between the bottom surface of steel plate 2 and the bottom surface of concrete slab 6 is determined based on the test conditions.

[0028] Furthermore, in one embodiment of this utility model, the concrete slab 6 includes concrete 6.

[0029] Specifically, the perforated corrugated steel plate 4 is vertically embedded into the concrete slab 6 at both ends. The stiffening plate 3 is vertically welded to the left and right sides of the middle of the perforated corrugated steel plate 4. The distance L between the stiffening plate 3 and the inner side 61 of the concrete slab is greater than the wavelength of one corrugated steel web. The upper end of the stiffening plate 3 is vertically welded to the bearing plate 1, and the lower end of the stiffening plate 3 is vertically welded to the steel plate 2. The center of the bearing plate 1 and the steel plate 2 is located in the middle of the perforated corrugated steel plate 4. The distance d between the bottom surface of the steel plate 2 and the bottom surface 62 of the concrete slab is greater than 20cm.

[0030] Optionally, in one embodiment of the present invention, the position and number of openings in the corrugated steel plate 4 and the diameter of the through steel bar 5 can be adjusted according to the purpose of the test, and the through steel bar 5 passes vertically through the center of the opening in the corrugated steel plate 4.

[0031] In other words, the through steel bar 5 passes vertically through the center of the opening in the corrugated steel plate 4.

[0032] Finally, it should be noted that the accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The above preferred embodiments are only used to illustrate the technical solutions of the invention and are not intended to limit it. Although the invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes in form and detail can be made without departing from the scope defined by the claims.

Claims

1. A corrugated steel web concrete composite member for push-out testing, characterized by, The components include: a pressure plate (1), a steel plate (2), a reinforcing plate (3), a corrugated steel plate (4), a through-bar (5), and a concrete slab (6); The corrugated steel plate (4) is corrugated and contains one corrugation; multiple openings are provided at both ends of the corrugated steel plate (4); The through steel bar (5) passes vertically through the center of the opening in the corrugated steel plate (4); The through steel bar (5) connects the corrugated steel plate (4) and the concrete slab (6); The corrugated steel plate (4) is vertically embedded in the concrete slab (6) at both ends; The stiffening plate (3) is welded perpendicularly to the middle side of the perforated corrugated steel plate.

2. The structure of claim 1, wherein The concrete slab comprises concrete.

3. The component according to claim 2, characterized in that, The distance between the stiffening plate (3) and the concrete slab (6) is greater than the wavelength of one corrugated steel web.

4. The component according to claim 3, characterized in that, The upper end of the stiffening plate (3) is welded perpendicularly to the bearing plate (1).

5. The component according to claim 4, characterized in that, The lower end of the stiffening plate (3) is welded perpendicularly to the steel plate (2).

6. The component according to claim 5, characterized in that, The center of the pressure plate (1) and the steel plate (2) is located in the middle of the perforated corrugated steel plate.

7. The component according to claim 6, characterized in that, The distance between the bottom surface of the steel plate (2) and the bottom surface of the concrete slab (6) is greater than 20cm.

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