Reinforced hollow slab structure combined by double pi-shaped steel plates

Abstract

The utility model relates to the technical field of civil engineering, in particular to a reinforced hollow slab structure combined by double pi-shaped steel plates. The reinforced hollow slab structure comprises a plurality of first connecting assemblies arranged in the length direction of a hollow slab, the second connecting assemblies stretch across the hollow slabs and correspondingly connect the first connecting assemblies on the adjacent hollow slabs in the same row into a whole, and hollow box-shaped structures are formed at the joints of the first connecting assemblies and the second connecting assemblies. The first connecting assemblies, in the same row, on the adjacent hollow slabs are connected into a whole through the second connecting assemblies, then part of loads can be transmitted to the first connecting assemblies and the second connecting assemblies, and the first connecting assemblies, the second connecting assemblies and the hollow slabs work cooperatively; the transverse connection between the adjacent hollow slabs can be greatly enhanced, the transverse rigidity of the hollow slabs is greatly improved, and the stress problem of the single hollow slabs is essentially solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to civil engineering technical field, concretely relates to a reinforced hollow slab structure of double pi shape steel plate combination. BACKGROUND

[0002] The hollow slab beam adopts light weight structure form, and has many advantages such as large spanning capacity, low building height, fast construction speed, can greatly shorten the construction period, can mass production factoryization centralized prefabrication and reduce cost, so that it is widely applied in bridge construction, especially in high-grade highway. With the development of transportation industry, the proportion of traffic volume of overweight and overload vehicles rapidly increases, and hollow slab bridges have many diseases. The most typical disease is that longitudinal cracks appear in hinge joint along hollow slab of bridge deck, there is water seepage and white crystalline body precipitation phenomenon at hinge joint of bottom plate, and single plate deflection of part hollow slab is too large, and transverse cracks appear in hollow slab, which are all typical single plate stress diseases. The disease reason is that hinge joint structure cannot maintain original function with the increase of load, leads to hinge joint damage, thereby making the overall stress system of bridge become single plate stress.

[0003] In the prior art, hollow slab single plate stress reinforcement mainly adopts the methods of removing bridge deck pavement and redrawing hinge joint, planting steel bar on top plate and adding vertical tie rod reinforcement, and sticking steel plate reinforcement. Removing bridge deck pavement and redrawing hinge joint is to remove original bridge deck pavement and hinge joint concrete, plant steel bar on hollow slab top plate, strengthen the connection between hollow slab and bridge deck pavement, make bridge deck pavement and hollow slab form combined section and stress together, and improve the bending stiffness of hollow slab beam. This method has great influence on traffic, long construction period, small hinge joint size, and difficult to guarantee the quality of concrete vibration. Planting steel bar on top plate and adding vertical tie rod reinforcement is to plant steel bar on top plate and increase vertical tie rod on hinge joint, and reserve vertical tie rod grouting hole on top plate. After hinge joint construction is completed, the tie rod is grouted, so that the tie rod and the side of hollow slab form a whole. This method only strengthens the transverse connection between adjacent hollow slabs from structure, does not essentially improve the stiffness of hollow slab beam, has great construction difficulty, and has certain influence on traffic. Sticking steel plate reinforcement is to stick thin steel plate along the longitudinal direction of hollow slab beam, and make the steel plate and hollow slab beam stress together through bolt and adhesive, only improve the bearing capacity of single beam, do not strengthen the overall connection, and belong to treating the symptoms not the disease. The reinforcement effect is greatly dependent on the adhesive process and construction process level.

[0004] In view of the above technical problems, the utility model is hereby researched and proposed. UTILITY MODEL CONTENTS

[0005] The utility model wants to solve the technical problem to provide a kind of reinforced hollow slab structure of double π-shaped steel plate combination, by being provided with the second connecting component on the adjacent hollow slab, and the first connecting component of same row is connected into a whole, then part load can be transferred to the first connecting component and the second connecting component, make the first connecting component and the second connecting component and hollow slab work in coordination, can greatly strengthen the transverse contact between adjacent hollow slab, greatly improve the transverse rigidity of hollow slab, essentially solve the stress problem of hollow slab single board.

[0006] To solve the above technical problems, the utility model provides a kind of reinforced hollow slab structure of double π-shaped steel plate combination, including the first connecting component being arranged along the length direction of hollow slab, and multiple second connecting components that cross several hollow boards and correspond to connect the first connecting component on the adjacent and same row hollow board into an integral, the connecting place of first connecting component and second connecting component forms the box-shaped structure of hollow.

[0007] As described above, a kind of reinforced hollow slab structure of double π-shaped steel plate combination, first connecting component is equipped with two groups and interval is arranged on the bottom of hollow board.

[0008] As described above, a kind of reinforced hollow slab structure of double π-shaped steel plate combination, first connecting component includes the base plate connected with the bottom of hollow board and two first vertical steel plate and second vertical steel plate interval arranged on base plate, base plate, first vertical steel plate and second vertical steel plate are combined into π-shaped structure;

[0009] Second connecting component includes the transverse steel plate that cross several hollow boards and the third vertical steel plate and fourth vertical steel plate interval arranged on transverse steel plate along the length direction of transverse steel plate, third vertical steel plate connects the first vertical steel plate on the adjacent hollow board and same row into an integral, third vertical steel plate connects the second vertical steel plate on the adjacent hollow board and same row into an integral, transverse steel plate, third vertical steel plate and fourth vertical steel plate also combine into π-shaped structure.

[0010] As described above, a kind of reinforced hollow slab structure of double π-shaped steel plate combination, third vertical steel plate and fourth vertical steel plate are arranged between first steel plate and second steel plate.

[0011] As described above, a kind of reinforced hollow slab structure of double π-shaped steel plate combination, the base plate is connected with hollow board by anchor bolt.

[0012] As described above, a kind of reinforced hollow slab structure of double π-shaped steel plate combination, the base plate and hollow board are equipped with the adhesive layer that the both are bonded.

[0013] As described above, a kind of reinforced hollow slab structure of double π-shaped steel plate combination, base plate, first vertical steel plate and second vertical steel plate are connected into an integral by welding.

[0014] The third vertical steel plate and the fourth vertical steel plate of the double-pi-shaped steel plate combined reinforced hollow slab structure are connected into one body by welding.

[0015] The first vertical steel plate and the third vertical steel plate of the double-pi-shaped steel plate combined reinforced hollow slab structure are connected into one body by welding, and the second vertical steel plate and the fourth vertical steel plate are also connected into one body by welding.

[0016] Compared with the prior art, the double-pi-shaped steel plate combined reinforced hollow slab structure has the following advantages:

[0017] 1. The first connecting assembly and the second connecting assembly of the double-pi-shaped steel plate combined reinforced hollow slab structure are connected into one body by the second connecting assembly, and then part of the load is transmitted to the first connecting assembly and the second connecting assembly, so that the first connecting assembly, the second connecting assembly and the hollow slab work cooperatively, the transverse connection between the adjacent hollow slabs is greatly strengthened, the transverse stiffness of the hollow slab is greatly improved, and the stress problem of the single hollow slab is solved in essence.

[0018] 2. The connecting part of the first connecting assembly and the second connecting assembly is a hollow box structure, which can make the whole lightweight, facilitate construction, and basically not increase the load of the hollow slab. BRIEF DESCRIPTION OF DRAWINGS

[0019] The specific embodiments of the utility model will be further described in detail below with reference to the drawings, in which:

[0020] Figure 1 is a structural schematic diagram of the utility model.

[0021] Figure 2 is another structural schematic diagram of the utility model.

[0022] Figure 3 is still another structural schematic diagram of the utility model.

[0023] Figure 4 is a structural schematic diagram of the base steel plate in the utility model.

[0024] Figure 5 is a structural schematic diagram of the transverse steel plate in the utility model

[0025] Figure 6 is a structural schematic diagram of the first connecting assembly in the utility model.

[0026] Figure 7 is a structural schematic diagram of the second connecting assembly in the utility model.

[0027] In the figure: 1. Hollow plate; 2. First connecting assembly; 20. Base steel plate; 21. First vertical steel plate; 22. Second vertical steel plate;

[0028] 3. Second connecting component; 30. Horizontal steel plate; 31. Third vertical steel plate; 32. Fourth vertical steel plate.

Detailed Implementation Methods

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 1-7 As shown, this utility model includes a reinforced hollow slab structure composed of double π-shaped steel plates. It comprises several first connecting components 2 arranged along the length of the hollow slab 1, and several second connecting components 3 spanning several hollow slabs 1 and correspondingly connecting the first connecting components 2 on adjacent and parallel hollow slabs 1 into a single unit. The connection between the first connecting components 2 and the second connecting components 3 forms a hollow box-shaped structure. In this application, the second connecting components 3 connect the first connecting components 2 on adjacent hollow slabs 1 and in the same row into a whole, thereby transferring part of the load to the first connecting components 2 and the second connecting components 3. This allows the first connecting components 2 and the second connecting components 3 to work collaboratively with the hollow slab 1, greatly strengthening the lateral connection between adjacent hollow slabs 1 and significantly improving the lateral stiffness of the hollow slab 1, fundamentally solving the problem of single-slab stress in the hollow slab 1. Furthermore, the hollow box-shaped structure at the connection between the first connecting components 2 and the second connecting components 3 in this application allows for overall weight reduction, facilitates construction, and reduces the load on the hollow slab 1.

[0031] like Figure 2 , Figure 3 As shown, as a further solution of this embodiment, the first connecting component 2 is provided in two sets and is arranged at intervals on the bottom of the hollow plate 1. By providing two first connecting components 2 on the same row of the hollow plate 1, the connection can be made more stable.

[0032] like Figures 2 to 7 As shown, as a further embodiment, the first connecting component 2 includes a base steel plate 20 connected to the bottom of the hollow plate 1 and two vertical steel plates 21 and 22 spaced apart on the base steel plate 20. The base steel plate 20, the first vertical steel plate 21 and the second vertical steel plate 22 are combined to form a π-shaped structure.

[0033] The second connecting assembly 3 comprises a transverse steel plate 30 crossing the plurality of hollow plates 1, and a third vertical steel plate 31 and a fourth vertical steel plate 32 arranged on the transverse steel plate 30 and spaced along the length direction of the transverse steel plate 30, the third vertical steel plate 31 connecting the first vertical steel plates 21 on the adjacent hollow plates 1 and in the same row into one body, the third vertical steel plate 31 connecting the second vertical steel plates 22 on the adjacent hollow plates 1 and in the same row into one body, the transverse steel plate 30, the third vertical steel plate 31 and the fourth vertical steel plate 32 also being combined into a π-shaped structure. The first connecting assembly 2 and the second connecting assembly 3 are both π-shaped structures, and after the first connecting assembly 2 and the second connecting assembly 3 are connected, the base steel plate 20, the first vertical steel plate 21, the second vertical steel plate 22, the transverse steel plate 30, the third vertical steel plate 31 and the fourth vertical steel plate 32 form a rectangular hollow box-shaped structure.

[0034] When the first connecting assembly 2 is installed, the base steel plate 20, the first vertical steel plate 21 and the second vertical steel plate 22 can be fixed together by welding, and from the cross section, a π-shaped structure is formed, and then the base steel plate 20 and the hollow plate 1 are installed together by anchor bolts, so that the entire first connecting assembly 2 can be installed on the hollow plate 1. Similarly, when the second connecting assembly is installed, the transverse steel plate 30, the third vertical steel plate 31 and the fourth vertical steel plate 32 can also be installed together by welding, and from the cross section, a π-shaped structure is also formed, and the two are fixed together by welding, thereby forming a double π-shaped structure, and then part of the load can be transmitted to the first connecting assembly 2 and the second connecting assembly 3, so that the first connecting assembly 2 and the second connecting assembly 3 work together with the hollow plate 1, the transverse connection between the adjacent hollow plates 1 is greatly strengthened, and the transverse stiffness of the hollow plate 1 is greatly improved, thereby essentially solving the single-plate stress problem of the hollow plate 1.

[0035] As a further scheme of the embodiment, the third vertical steel plate 31 and the fourth vertical steel plate 32 are arranged between the first steel plate and the second steel plate. When the second connecting assembly 3 is installed, the third vertical steel plate 31 and the fourth vertical steel plate 32 are located between the first vertical steel plate 21 and the second vertical steel plate 22, and the two are staggered, so that the two can have more contact area and be more stable after welding. In addition, the first vertical steel plate 21 and the second vertical steel plate 22 in the first connecting assembly 2 can also be located between the third vertical steel plate 31 and the fourth vertical steel plate 32 in the second connecting assembly 3.

[0036] As a further scheme of the embodiment, an adhesive layer is arranged between the base steel plate 20 and the hollow slab 1 to bond them together. In the present application, the base steel plate 20 is connected to the hollow slab 1 to form an integrated body by arranging the adhesive layer, so that the stability of the connection between the base steel plate 20 and the hollow slab 1 is enhanced, and the gap between the base steel plate 20 and the hollow slab 1 is filled. The adhesive layer is not shown in the drawings. The adhesive layer has excellent performance in self-adhesion and mutual adhesion between the steel plate and the concrete, so that the steel plate and the concrete are firmly formed into an integrated body to achieve the effect of structural reinforcement and reinforcement. The material of the adhesive layer can be a two-component modified epoxy structural adhesive A and B.

[0037] As another preferred scheme of the application, when the second connecting assembly 3 is installed, the third vertical steel plate 31 and the fourth vertical steel plate 32 are first connected to the corresponding first vertical steel plate 21 and the second vertical steel plate 22 by welding, and then the horizontal steel plate 30 is connected to the third vertical steel plate 31 and the fourth vertical steel plate 32 by welding.

Claims

1. A reinforced hollow slab (1) structure composed of double π-shaped steel plates, characterized in that... It includes several first connecting components (2) arranged along the length of the hollow plate (1), and several second connecting components (3) that span several hollow plates (1) and connect the first connecting components (2) on adjacent and parallel hollow plates (1) into one unit. The connection between the first connecting components (2) and the second connecting components (3) forms a hollow box structure.

2. The reinforced hollow slab (1) structure of a double π-shaped steel plate combination according to claim 1, characterized in that... The first connecting component (2) has two sets and is spaced apart on the bottom of the hollow plate (1).

3. The reinforced hollow slab (1) structure of a double π-shaped steel plate combination according to claim 1 or 2, characterized in that... The first connecting component (2) includes a base steel plate (20) connected to the bottom of the hollow plate (1) and two vertical steel plates (21) and a second vertical steel plate (22) spaced apart on the base steel plate (20). The base steel plate (20), the first vertical steel plate (21) and the second vertical steel plate (22) are combined to form a π-shaped structure. The second connecting component (3) includes a transverse steel plate (30) spanning several hollow plates (1) and a third vertical steel plate (31) and a fourth vertical steel plate (32) disposed on the transverse steel plate (30) and spaced apart along the length of the transverse steel plate (30). The third vertical steel plate (31) connects the first vertical steel plate (21) on adjacent hollow plates (1) and in the same row into a whole. The third vertical steel plate (31) connects the second vertical steel plate (22) on adjacent hollow plates (1) and in the same row into a whole. The transverse steel plate (30), the third vertical steel plate (31) and the fourth vertical steel plate (32) are also combined into a π-shaped structure.

4. The reinforced hollow slab (1) structure of double π-shaped steel plate combination according to claim 3, characterized in that... The third vertical steel plate (31) and the fourth vertical steel plate (32) are located between the first steel plate and the second steel plate.

5. The reinforced hollow slab (1) structure of a double π-shaped steel plate combination according to claim 3, characterized in that... The base steel plate (20) is connected to the hollow plate (1) by anchor bolts.

6. The reinforced hollow slab (1) structure of double π-shaped steel plate combination according to claim 3, characterized in that... An adhesive layer is provided between the base steel plate (20) and the hollow plate (1) to bond the two together.

7. The reinforced hollow slab (1) structure of a double π-shaped steel plate combination according to claim 3, characterized in that... The base steel plate (20), the first vertical steel plate (21), and the second vertical steel plate (22) are connected together by welding.

8. The reinforced hollow slab (1) structure of double π-shaped steel plate combination according to claim 3, characterized in that... The horizontal steel plate (30), the third vertical steel plate (31), and the fourth vertical steel plate (32) are connected together by welding.

9. The reinforced hollow slab (1) structure of a double π-shaped steel plate combination according to claim 3, characterized in that... The first vertical steel plate (21) and the third vertical steel plate (31) are connected together by welding. Similarly, the second vertical steel plate (22) and the fourth vertical steel plate (32) are also connected together by welding.

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