Expansion joint structure for corrugated steel plate-concrete composite structure

Abstract

The present invention discloses an expansion joint structure for a corrugated steel plate-concrete composite structure, which relates to the technical field of building components, and comprises two flanges respectively connected to adjacent corrugated steel plates, the two flanges are arranged in parallel, and at least two telescopic plates capable of expansion and contraction are arranged between the two flanges; one end of the corrugated steel plate connected to the flange extends to the outer side of the edge of the concrete structure, and an elastic filler is filled between adjacent concrete structures, and the filler is arranged on the outer side of the flange and the telescopic plate and the upper surface of the corrugated steel plate; a reinforcing rib plate is arranged between the corrugated steel plate and the flange for reinforcing the flange. The deformation of the expansion joint of the corrugated steel plate-concrete composite structure is adapted by means of two telescopic plates between the two parallel flanges; at the same time, the deformation of the corrugated steel plate-concrete composite structure is adapted by means of the elastic filler between the adjacent concrete structures. The present invention can ensure the stability of the corrugated steel plate-concrete structure and extend its service life.

Description

Technical Field

[0001] The invention relates to the technical field of building components, and in particular to an expansion joint structure for a corrugated steel plate-concrete composite structure. Background Art

[0002] The steel corrugated plate structure is a new type of building structure with the characteristics of lateral compensation displacement and good deformation adaptability. It has been widely used in engineering fields such as tunnels, bridges, culverts, underground pipe galleries, and underground pipelines. However, in some arch culvert engineering structures with large spans, large load bearing and high strength requirements, the strength of the steel corrugated plate alone cannot meet the requirements of the project. It is usually necessary to use a structure combined with reinforced concrete and corrugated steel as a support. The steel corrugated plate and concrete are subjected to overall force and synergistically to fully improve the bearing capacity of the overall structure. However, the existing concrete and corrugated steel mixed structure has poor deformation resistance due to the presence of concrete. In the later use process, the corrugated steel combined structure is easily damaged due to terrain settlement or other external forces. It is necessary to set expansion devices at a certain distance to adapt to the settlement and other changes of the structure. However, there is currently no expansion joint suitable for corrugated steel mixed structure. The expansion joints of the existing structure have poor expansion and contraction, which will affect the service life of the building. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a expansion joint structure for a corrugated steel plate-concrete composite structure in view of the deficiencies of the above-mentioned prior art, which is suitable for the corrugated steel plate-concrete composite structure, can adapt to the expansion and contraction properties of concrete and corrugated steel plate at the same time, and prolong the service life of the corrugated steel plate-concrete composite structure.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A expansion joint structure for a corrugated steel plate-concrete composite structure comprises two flanges respectively connected to adjacent corrugated steel plates, the two flanges are arranged in parallel, and at least two telescopic plates capable of expansion and contraction are arranged between the two flanges; one end of the corrugated steel plate connected to the flange extends to the outside of the edge of the concrete structure, and an elastic filler is filled between adjacent concrete structures, and the elastic filler is arranged on the outside of the flange and the telescopic plate and the upper surface of the corrugated steel plate; a reinforcing rib plate is arranged between the corrugated steel plate and the flange.

[0006] Preferably, the telescopic plate is an arc-shaped steel plate, the ends of the arc-shaped steel plate are connected to the flange, and a telescopic supporting structure is provided in the middle of the two arc-shaped steel plates.

[0007] Preferably, the telescopic support structure comprises a telescopic rod and a spring, wherein the spring is sleeved on the outside of the telescopic rod, and both ends of the spring and the telescopic rod are respectively fixedly connected to the middle parts of the two arc-shaped steel plates.

[0008] Preferably, the telescopic rod includes an outer sleeve and an inner sleeve, the opposite ends of the outer sleeve and the inner sleeve are fitted together, and the other ends of the outer sleeve and the inner sleeve are respectively fixed to the middle of two arc-shaped steel plates; the spring is fitted onto the outside of the outer sleeve and the inner sleeve.

[0009] Preferably, a protective plate is laid on the top of the elastic filler, and both ends of the protective plate are arranged above the concrete structures on both sides.

[0010] Preferably, the arc surfaces of the two arc-shaped steel plates are both arranged toward one side of the corrugated steel plate.

[0011] Preferably, the arc surfaces of the two arc-shaped steel plates are arranged opposite to each other.

[0012] Preferably, the end of the telescopic plate is fixedly connected to the flange by bolts or welding.

[0013] Preferably, the reinforcing rib plate is a right-angled trapezoid, the bottom edge of the reinforcing rib plate abuts against the top of the corrugated steel plate, and the side elevation of the reinforcing rib plate is fixed tightly against the flange surface.

[0014] Preferably, the elastic filler is a polyurethane foam material.

[0015] The beneficial effects of the above technical solution are as follows: compared with the prior art, the present invention connects the ends of adjacent corrugated steel plates respectively through two parallel flanges, and at least two retractable retractable plates are arranged between the two flanges, and the retractable plates are used to adapt to the deformation of the corrugated steel plate-concrete composite structure; at the same time, elastic fillers are filled between adjacent concrete structures, on the outside of the flanges and the retractable plates, and on the upper surface of the corrugated steel plates, and the elasticity of the elastic fillers is used to adapt to the deformation of the corrugated steel plate-concrete composite structure; the flange is reinforced with a reinforcing rib plate. The present invention is used to adapt to the expansion and contraction of the corrugated steel plate-concrete structure, which can ensure the stability of the corrugated steel plate-concrete structure and extend the service life of the corrugated steel plate-concrete composite structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an expansion joint structure for a corrugated steel plate-concrete composite structure provided by an embodiment of the present invention;

[0017] Figure 2 It is a structural schematic diagram of an expansion joint structure for a corrugated steel plate-concrete composite structure provided by another embodiment of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the telescopic support structure in the present invention;

[0019] Figure 4 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 5 yes Figure 1 A partial enlarged view of point B in the middle;

[0021] In the figure: 01-corrugated steel plate, 02-concrete structure, 03-arc plate, 04-connecting bolts, 05-support plate, 06-rebar; 1-flange, 2-telescopic plate, 3-elastic filler, 4-telescopic rod, 41-outer sleeve, 42-inner sleeve; 5-spring, 6-protective plate, 7-reinforcement rib plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the technical solution in the embodiments of the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] like Figure 1 , 2 As shown, an expansion joint structure for a corrugated steel plate-concrete composite structure provided by an embodiment of the present invention comprises two flanges 1 respectively connected to adjacent corrugated steel plates 01, the two flanges 1 are arranged in parallel, and at least two expandable expansion plates 2 are arranged between the two flanges 1; one end of the corrugated steel plate 01 connected to the flange 1 extends to the outside of the edge of the concrete structure 02, and an elastic filler 3 is filled between adjacent concrete structures 02, and the elastic filler 3 is arranged on the outside of the flange 1 and the expansion plate 2 and the upper surface of the corrugated steel plate 01; a reinforcing rib plate is arranged between the corrugated steel plate 01 and the flange 1, which is used to reinforce the flange to prevent the expansion plate from pulling the flange during deformation, causing the flange to deflect. The elasticity of the expansion plate and the elastic filler in the structure is used to adapt to the expansion and contraction between adjacent corrugated steel plate-concrete composite structures, thereby ensuring the stability of the corrugated steel plate-concrete structure during use.

[0024] In a specific embodiment of the present invention, Figure 1 , 2 As shown in , 4, the telescopic plate 2 is an arc-shaped steel plate, the end of the arc-shaped steel plate is connected to the flange 1, and a telescopic support structure is provided in the middle of the two arc-shaped steel plates. The middle of the arc-shaped steel plate is bent into an arc shape, and then bent to the horizontal and vertical states at both ends in sequence, and the end of the arc-shaped steel plate is kept in a vertical state, which is convenient for connection with the flange. The flange can be made of steel plate.

[0025] In a specific embodiment of the present invention, Figure 1 , 2As shown in Figure 3, the telescopic support structure includes a telescopic rod 4 and a spring 5. The spring 5 is sleeved on the outside of the telescopic rod 4. The two ends of the spring 5 and the telescopic rod 4 are respectively fixedly connected to the middle of the two arc-shaped steel plates. The telescopic rod 4 includes an outer sleeve 41 and an inner sleeve 42. The opposite ends of the outer sleeve 41 and the inner sleeve 42 are sleeved together. The other ends of the outer sleeve 41 and the inner sleeve 42 are respectively fixedly connected to the middle of the two arc-shaped steel plates; the spring 5 is sleeved on the outside of the outer sleeve 41 and the inner sleeve 42. When the expansion joint gap of the adjacent corrugated steel plate-concrete composite structure is reduced or increased, the two arc-shaped steel plates will be compressed or stretched, resulting in a change in the distance between the two arc-shaped steel plates. The outer sleeve and the inner sleeve of the outer sleeve spring are used to adapt to the change in the distance of the expansion joint between the two arc-shaped steel plates, and at the same time, the outer sleeve and the inner sleeve play a supporting role.

[0026] In a specific embodiment of the present invention, Figure 1 , 2 As shown in FIG. 4 , a protective plate 6 is laid on the top of the elastic filler 3, and the two ends of the protective plate 6 are arranged above the concrete structures 02 on both sides. The protective plate 6 can be a corrugated plate to adapt to the distance change of the expansion joint between adjacent corrugated steel plate-concrete composite structures. With the help of the protective plate, damage to the expansion joint can be avoided during the backfilling process.

[0027] In a specific embodiment of the present invention, Figure 1 As shown, the arc surfaces of the two arc-shaped steel plates are both arranged toward the side of the corrugated steel plate 01. Figure 2 In another specific embodiment shown, the arc surfaces of the two arc-shaped steel plates are arranged opposite to each other. The two arc-shaped steel plates adopt the above two structures, both of which can achieve the purpose of adjusting the expansion joint.

[0028] During specific production, the end of the telescopic plate 2 is connected to the flange 1 by bolts or welding. Bolt connection is preferred to facilitate the later disassembly of the telescopic plate and the recycling of the flange.

[0029] Further optimize the above technical solution, such as Figure 1 , 2 As shown, the reinforcing rib plate 7 is a right-angled trapezoid, the bottom edge of the reinforcing rib plate 7 abuts against the top of the corrugated steel plate 01, and the side elevation of the reinforcing rib plate 7 is fixed close to the surface of the flange 1. During specific production, the elevation of the reinforcing rib plate can be welded to the outer surface of the flange, and multiple reinforcing rib plates are arranged at intervals. The flange can be reinforced by the reinforcing rib plates to ensure that the flange is always in an upright state during use.

[0030] In a specific embodiment of the present invention, Figure 1 , 2As shown, the elastic filler 3 is a polyurethane foam material. The polyurethane foam material is used to fill the expansion joint, which is convenient to construct, fast to form, good in adhesion, and has the advantages of waterproof, heat insulation, and corrosion resistance.

[0031] In addition, during the construction of the corrugated steel plate-concrete composite structure, shear members are arranged at intervals in the arc groove of the bottom corrugated steel plate. The shear members include arc plate 03, connecting bolts 04 and support plate 05. The arc plate 03 abuts against the arc groove of the corrugated steel plate 01. The connecting bolts penetrate the corrugated steel plate, the arc plate and the support plate in sequence. The nuts are tightened and fixed on the outside of the corrugated steel plate and the inside of the arc plate and the support plate. In addition, the upper end bend of the connecting bolt cooperates with the steel bar 06 in the concrete structure, and the connecting bolt is cast as a whole with the concrete to enhance the pull-out resistance of the shear member. The shear member can effectively transmit the shear force between the corrugated steel plate-concrete composite structure.

[0032] The expansion joint structure for the corrugated steel plate-concrete composite structure provided by the present invention has the advantages of simple structure, convenient manufacture, low cost, and convenient and quick construction compared with the prior art. Two arc-shaped steel plates are used to adapt to the change of the expansion joint of the corrugated steel plate-concrete composite structure, and the two arc-shaped steel plates are flexibly connected by means of springs and telescopic rods. The present invention can adapt to the change of the expansion joint gap of adjacent corrugated steel plate-concrete composite structures, thereby ensuring the stability of the corrugated steel plate-concrete structure during use and extending its service life.

[0033] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An expansion joint structure for a corrugated steel plate-concrete composite structure, characterized in that: It comprises two flanges connected to adjacent corrugated steel plates respectively, the two flanges are arranged in parallel, and at least two telescopic plates capable of extension and contraction are arranged between the two flanges; one end of the corrugated steel plate connected to the flange extends to the outside of the edge of the concrete structure, and an elastic filler is filled between adjacent concrete structures, and the elastic filler is arranged on the outside of the flange and the telescopic plate and the upper surface of the corrugated steel plate; a reinforcing rib plate is arranged between the corrugated steel plate and the flange; The telescopic plate is an arc-shaped steel plate, the ends of the arc-shaped steel plate are connected to the flange, and a telescopic support structure is provided in the middle of the two arc-shaped steel plates; the telescopic support structure includes a telescopic rod and a spring, the spring is sleeved on the outside of the telescopic rod, and the two ends of the spring and the telescopic rod are respectively fixedly connected to the middle of the two arc-shaped steel plates; A protective plate is laid on the top of the elastic filler, and two ends of the protective plate are arranged above the concrete structures on both sides.

2. The expansion joint structure for the corrugated steel plate-concrete composite structure according to claim 1, characterized in that: The telescopic rod comprises an outer sleeve and an inner sleeve, the opposite ends of the outer sleeve and the inner sleeve are fitted together, and the other ends of the outer sleeve and the inner sleeve are respectively fixedly connected to the middle of two arc-shaped steel plates; the spring is fitted on the outside of the outer sleeve and the inner sleeve.

3. The expansion joint structure for the corrugated steel plate-concrete composite structure according to claim 1, characterized in that: The arc surfaces of the two arc-shaped steel plates are both arranged toward one side of the corrugated steel plate.

4. The expansion joint structure for a corrugated steel plate-concrete composite structure according to claim 1, characterized in that: The arc surfaces of the two arc-shaped steel plates are arranged opposite to each other.

5. The expansion joint structure for the corrugated steel plate-concrete composite structure according to claim 1, characterized in that: The end of the arc-shaped steel plate is fixedly connected to the flange by bolt connection or welding.

6. The expansion joint structure for the corrugated steel plate-concrete composite structure according to claim 1, characterized in that: The reinforcing rib plate is a right-angled trapezoid, the bottom edge of the reinforcing rib plate is in contact with the top of the corrugated steel plate, and the side elevation of the reinforcing rib plate is fixed tightly against the flange surface.

7. The expansion joint structure for a corrugated steel plate-concrete composite structure according to any one of claims 1 to 6, characterized in that: The elastic filler is a polyurethane foam material.

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