Bridge hollow slab beam reinforcing structure and bridge

Abstract

The utility model relates to the technical field of bridge reinforcement, and discloses a bridge hollow slab girder reinforcement structure and a bridge, which comprises a plurality of hollow slab girders arranged side by side, a plurality of webs are arranged in each hollow slab girder, the bottom surface of each hollow slab girder is provided with longitudinal reinforcers, the number of the longitudinal reinforcers is equal to that of the webs, and the longitudinal reinforcers are in one-to-one correspondence with the webs. The longitudinal reinforcements are arranged in the longitudinal direction of the bridge and comprise upper-layer sticky steel plates and lower-layer sticky steel plates, and the upper-layer sticky steel plates are located between the hollow slab girders and the lower-layer sticky steel plates; the transverse reinforcements are arranged in the transverse direction of the bridge, and all the longitudinal reinforcements are located between the transverse reinforcements and the hollow slab girders. According to the utility model, the problem that a bridge with high requirement on the strength of a reinforcing structure cannot be stably reinforced by a sticky steel plate reinforcing structure in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge reinforcement, in particular to a bridge hollow slab beam reinforcement structure and a bridge. Background Art

[0002] There are a large number of bridges in my country. As their service life increases, when bridges are damaged by natural factors, or are affected by various human factors such as low design load levels and improper construction, or when bridges are renovated due to increases in highway traffic volume and changes in operating conditions, they need to be reinforced to improve the highway's traffic capacity and service level and save a lot of investment, thereby achieving good social and economic benefits.

[0003] Currently, bridge reinforcement methods mainly include increasing cross-section reinforcement, prestressed reinforcement, steel plate bonding reinforcement, FRP material bonding reinforcement, and external steel reinforcement. Due to the influence of structural form or material properties, it is necessary to select the appropriate reinforcement method based on the actual needs of bridge reinforcement. Among them, the steel plate bonding reinforcement method involves bonding steel plates to the surface of reinforced concrete structural components using a special building structural adhesive to increase the bearing capacity of the structural components. Although existing steel plate bonding reinforcement structures can reinforce ordinary bridges, they are unable to firmly reinforce bridges that require high structural strength. Utility Model Content

[0004] The utility model aims to provide a bridge hollow slab beam reinforcement structure and a bridge, so as to solve the problem that the prior art bonded steel plate reinforcement structure cannot stably reinforce the bridge with high requirements for the strength of the reinforced structure.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a bridge hollow slab beam reinforcement structure, comprising a plurality of hollow slab beams arranged side by side, each hollow slab beam being provided with a plurality of webs, and the bottom surface of each hollow slab beam being provided with a number of longitudinal reinforcements equal to and corresponding to the number of webs, the longitudinal reinforcements being arranged along the longitudinal direction of the bridge, the longitudinal reinforcements comprising an upper adhesive steel plate and a lower adhesive steel plate, the upper adhesive steel plate being located between the hollow slab beam and the lower adhesive steel plate; and also comprising transverse reinforcements arranged along the transverse direction of the bridge, and all longitudinal reinforcements being located between the transverse reinforcements and the hollow slab beam.

[0006] The principle and beneficial effects of this solution are as follows: in this application, a number of longitudinal reinforcements equal to the number of webs and corresponding to each other are set on the bottom surface of each hollow slab beam, and the longitudinal reinforcements are set along the longitudinal direction of the bridge, and two longitudinal reinforcements are used to reinforce the position where the webs are set on the hollow slab beam, thereby effectively improving the reinforcement effect; in addition, the longitudinal reinforcements in this application include an upper bonded steel plate and a lower bonded steel plate, and adopt a double-layer bonded steel plate form, which effectively improves the structural strength of the longitudinal reinforcements, thereby improving the reinforcement strength of the hollow slab beam; at the same time, this application also provides transverse reinforcements arranged along the transverse direction of the bridge, and the transverse reinforcements and the longitudinal reinforcements are arranged perpendicular to each other, and all longitudinal reinforcements are located between the transverse reinforcements and the hollow slab beams, and the transverse reinforcements are used to connect all the longitudinal reinforcements at the bottom of multiple hollow slab beams arranged side by side into one, thereby further improving the reinforcement strength of the overall structure, thereby achieving a more stable reinforcement effect on the hollow slab beam.

[0007] Preferably, as an improvement, the length of the upper adhesive steel plate is greater than that of the lower adhesive steel plate, and both ends of the upper adhesive steel plate protrude beyond both ends of the lower adhesive steel plate.

[0008] In this solution, the length of the upper adhesive steel plate is set to be longer than the lower adhesive steel plate, and the two ends of the upper adhesive steel plate protrude beyond the two ends of the lower adhesive steel plate. When bonding the lower adhesive steel plate, after setting glue on the bottom side of the upper adhesive steel plate, the lower adhesive steel plate can be conveniently bonded to the bottom surface of the upper adhesive steel plate, so that the lower adhesive steel plate can be more conveniently connected to the upper adhesive steel plate, the operation is convenient and the adhesion between the upper adhesive steel plate and the lower adhesive steel plate is more firm, thereby having a better reinforcement effect on the hollow slab beam.

[0009] Preferably, as an improvement, the width of the upper adhesive steel plate is greater than that of the lower adhesive steel plate, and both sides of the upper adhesive steel plate are located outside the two sides of the lower adhesive steel plate.

[0010] In this solution, the width of the longitudinal upper side adhesive steel plate is set wider, which not only makes the adhesive steel plate with the hollow slab beam have a larger contact area with the hollow slab beam, thereby forming a more stable adhesive effect with the hollow slab beam, and improving the reinforcement effect of the hollow slab beam; at the same time, the width of the upper adhesive steel plate is larger, which can be conveniently adhered to the lower adhesive steel plate at the bottom, and the structure of the longitudinal reinforcement is clearer.

[0011] Preferably, as an improvement, the transverse reinforcement includes a U-shaped hoop plate, the U-shaped hoop plate includes a horizontal section and vertical sections located at both ends of the horizontal section, the top surface of the horizontal section is connected to the bottom of the longitudinal reinforcement, and the two vertical sections are respectively connected to the webs of the hollow slab beams located on both sides of all hollow slab beams.

[0012] In this solution, a U-shaped U-shaped hoop is set as the transverse reinforcement. The vertical sections at both ends of the U-shaped hoop are fixedly connected to the outer webs of the two outermost hollow slab beams respectively, and the horizontal section is used to assist in fixing the longitudinal reinforcement. The U-shaped hoop can be conveniently and stably fixed to the side walls of the two outer hollow slab beams, and at the same time assist in fixing all the longitudinal reinforcements at the bottom of the hollow slab beam. Therefore, in this solution, the longitudinal reinforcement strengthens the longitudinal structure of the hollow slab beam, and the U-shaped hoop plays a role in transverse reinforcement of the hollow slab beam, so that the hollow slab beam is strengthened both in the transverse and longitudinal directions. The U-shaped hoop can also play an auxiliary fixing role for the longitudinal reinforcement with a longer length, so that all the upper and lower adhesive steel plates in the longitudinal reinforcement are connected as a whole, further improving the structural reinforcement effect of the hollow slab beam, and the structure is stable and easy to install.

[0013] Preferably, as an improvement, the number of the U-shaped hoop plates is at least four, wherein both ends of the upper adhesive steel plate extending beyond the lower adhesive steel plate are each provided with at least one U-shaped hoop plate, and both ends of the lower adhesive steel plate are respectively provided with at least one U-shaped hoop plate.

[0014] Since the length of the upper bonded steel plate is greater than that of the lower bonded steel plate, and the two ends of the upper bonded steel plate protrude beyond the two ends of the lower bonded steel plate, when setting the U-shaped hoop plate, in order to be able to simultaneously play an auxiliary structural reinforcement role for the upper and lower bonded steel plates, in this solution, a plurality of U-shaped hoop plates are set at both ends of the longitudinal reinforcement member to fix the two ends of the longitudinal reinforcement member, so that the longitudinal reinforcement member can be more firmly connected and fixed to the hollow slab beam, effectively improving the reinforcement effect of the longitudinal reinforcement member on the hollow slab beam; in particular, At least one U-shaped hoop is provided at both ends of the upper bonded steel plate, so that the ends of the upper bonded steel plate protruding beyond the lower bonded steel plate can be assisted and reinforced by the U-shaped hoop. In addition, at least one U-shaped hoop is provided at both ends of the lower bonded steel plate. The U-shaped hoop provided at both ends of the lower bonded steel plate can not only provide auxiliary reinforcement for the lower bonded steel plate, but also provide auxiliary reinforcement for the upper bonded steel plate on the upper side of the lower bonded steel plate, and make the fit between the lower bonded steel plate and the upper bonded steel plate tighter and more stable, thereby improving the stability of the reinforced structure.

[0015] Preferably, as an improvement, the outer sides of the hollow slab beams on both sides of all hollow slab beams are fixedly connected with longitudinal pressure plates, and the vertical sections of all U-shaped hoop plates are fixedly connected to the longitudinal pressure plates.

[0016] In this solution, longitudinal pressure plates are used to fix the vertical sections of all U-shaped hoop plates to the outer sides of the hollow slab beams, thereby further improving the stability of the connections of all U-shaped hoop plates and thus improving the reinforcement stability of the entire reinforced structure.

[0017] Preferably, as an improvement, the length of the longitudinal pressing plate is greater than the length of the upper adhesive steel plate, and both ends of the longitudinal pressing plate extend beyond both ends of the upper adhesive steel plate in the horizontal direction.

[0018] In this solution, a longitudinal pressing plate with a longer length is provided so that the longitudinal pressing plate can be conveniently fixedly connected to the side of the hollow slab beam and stably fix the vertical section of the U-shaped hoop plate.

[0019] Preferably, as an improvement, a filling steel plate is provided between the two longitudinal reinforcements at the bottom of the same hollow slab beam, the bottom surface of the filling steel plate is in contact with the top surface of the U-shaped hoop plate, and the top surface of the filling steel plate is in contact with the bottom surface of the hollow slab beam.

[0020] In this solution, a filling steel plate is provided between the two longitudinal reinforcements at the bottom of the same hollow slab beam, so that the connection between the two longitudinal reinforcements is more stable, thereby achieving a better reinforcement effect on the hollow slab beam.

[0021] Preferably, as an improvement, it also includes an intermediate hoop plate, which is U-shaped, and the two ends of the intermediate hoop plate are respectively connected to the outer side surfaces of the hollow slab beams on both sides of all hollow slab beams, and the middle part of the intermediate hoop plate is connected to the bottom surface of the middle part of the longitudinal reinforcement.

[0022] In this solution, the middle hoop plate reinforces the bottom surface of the middle part of the longitudinal reinforcement. Combined with the reinforcement effect of the U-shaped hoop plate on both ends of the longitudinal reinforcement, the longitudinal reinforcement can be more stably connected to the bottom of the hollow slab beam, thereby achieving a better reinforcement effect on the hollow slab beam.

[0023] A bridge comprises the hollow slab beam reinforcement structure.

[0024] In this solution, by arranging the hollow slab beam reinforcement structure on the bridge, the bridge can obtain a stable reinforcement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of Example 1 of the present utility model.

[0026] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0027] Figure 3 This is a side view of the hollow slab beam in Example 1 of the present utility model.

[0028] Figure 4 This is a bottom view of one end of the hollow slab beam in Example 1 of the present utility model.

[0029] Figure 5This is a schematic diagram of the connection between one of the hollow slab beams and the longitudinal reinforcement in Example 1 of the present invention.

[0030] Figure 6 This is a schematic diagram of the connection between one of the hollow slab beams and the longitudinal reinforcement in the second embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following is further described in detail through specific implementation methods:

[0032] The reference numerals in the drawings of the specification include: hollow slab beam 1, upper bonded steel plate 2, lower bonded steel plate 3, U-shaped hoop plate 4, horizontal section 401, vertical section 402, longitudinal pressure plate 5, and filling steel plate 6.

[0033] Example 1

[0034] This embodiment is as shown in the attached Figure 1 and Figure 2 As shown: A hollow slab beam reinforcement structure for a bridge, comprising a plurality of hollow slab beams 1 arranged side by side transversely, each hollow slab beam 1 being provided with a plurality of webs, the hollow slab beam 1 being generally a double web, and in this embodiment, each hollow slab beam 1 being provided with two webs, and in other embodiments other than this embodiment, under special circumstances, the hollow slab beam 1 can also be provided with multiple webs, which will not be described here. The bottom surface of each hollow slab beam 1 is provided with longitudinal reinforcements, the number of which is equal to and one-to-one corresponding to the number of its own webs, and all longitudinal reinforcements are provided along the longitudinal direction of the bridge (i.e., the longitudinal reinforcements are provided along the length direction of the hollow slab beam 1), so the number of longitudinal reinforcements in this embodiment is two and the two longitudinal reinforcements are located at both ends of the bottom surface of the hollow slab beam 1.

[0035] Combine Figure 1 and Figure 2 The longitudinal reinforcement includes an upper bonded steel plate 2 and a lower bonded steel plate 3. The upper bonded steel plate 2 is located between the hollow slab beam 1 and the lower bonded steel plate 3. The upper bonded steel plate 2 is fixedly connected between the hollow slab beam 1 and the lower bonded steel plate 3. The length of the upper bonded steel plate 2 is greater than the length of the lower bonded steel plate 3, so that both ends of the upper bonded steel plate 2 protrude beyond the ends of the lower bonded steel plate 3. At the same time, combined with Figure 3 and Figure 5 In this embodiment, the width of the upper bonded steel plate 2 is greater than that of the lower bonded steel plate 3, so that both sides of the upper bonded steel plate 2 are located outside the sides of the lower bonded steel plate 3. By setting the length and width of the upper bonded steel plate 2 longer, the upper bonded steel plate 2 can firmly reinforce the hollow slab beam 1. At the same time, the lower bonded steel plate 3 is easy to fix and can provide auxiliary reinforcement for the upper bonded steel plate 2, thereby achieving a better reinforcement effect on the hollow slab beam 1.

[0036] Combine Figure 1 and Figure 3 The bottom of the longitudinal reinforcement is connected to the transverse reinforcement arranged along the transverse direction of the bridge, and all the longitudinal reinforcements are located between the transverse reinforcement and the hollow slab beam 1. The transverse reinforcement is used to assist in fixing the longitudinal reinforcement so that the longitudinal reinforcement can be more firmly connected to the bottom of the hollow slab beam 1, so that the longitudinal reinforcement can better reinforce the hollow slab beam 1.

[0037] like Figure 3 As shown, the transverse reinforcement includes a U-shaped hoop plate 4, the number of which is at least four, preferably ten in this embodiment, wherein one U-shaped hoop plate 4 is provided at each end of the upper adhesive steel plate 2, and four U-shaped hoop plates 4 are provided at each end of the lower adhesive steel plate 3. Figure 2 and Figure 4 The U-shaped hoop 4 includes a horizontal section 401 and vertical sections 402 at both ends of the horizontal section 401. The top surface of the horizontal section 401 is in contact with the bottom surface of the lower adhesive steel plate 3, and the two vertical sections 402 of the U-shaped hoop 4 are respectively fixedly connected to the webs of the outer sides of the hollow slab beams 1 located on both sides of all hollow slab beams 1 by anchor bolts. The anchor bolts need to avoid the longitudinal prestressed tendons inside the bridge; at the same time, in order to make the U-shaped hoop 4 more firmly connected, in this embodiment, the outer sides of the hollow slab beams 1 located on both sides of the outermost sides of all hollow slab beams 1 are fixedly connected with longitudinal pressure plates 5. The length of the longitudinal pressure plates 5 is greater than the length of the upper adhesive steel plate 2, so that the longitudinal pressure plates 5 are fixedly connected to the vertical sections 402 of all U-shaped hoop plates 4 by bolts, that is, the vertical sections 402 at both ends of each U-shaped hoop plate 4 are at least correspondingly provided with one longitudinal pressure plate 5 for fixing.

[0038] In this embodiment, the hollow slab beam 1 is reinforced by fixing a longitudinal reinforcement at the bottom of the hollow slab beam 1, and the longitudinal reinforcement includes an upper adhesive steel plate 2 and a lower adhesive steel plate 3, which further improves the reinforcement strength of the longitudinal reinforcement. In addition, a U-shaped hoop plate 4 and a longitudinal pressure plate 5 are provided to further fix the longitudinal reinforcement, so that the longitudinal reinforcement has a better reinforcement effect on the hollow slab beam 1.

[0039] A bridge comprises the above-mentioned hollow slab beam 1 reinforcement structure, and the bridge is reinforced by using the reinforcement structure to effectively improve the stability of the bridge.

[0040] Example 2

[0041] The difference between the second embodiment and the first embodiment is that: Figure 6 As shown, in this embodiment, a filling steel plate 6 is provided in the space between the two longitudinal reinforcements at the bottom of the same hollow slab beam 1. The bottom surface of the filling steel plate 6 is in contact with the top surface of the U-shaped hoop plate 4, and the top surface of the filling steel plate 6 is in contact with the bottom surface of the hollow slab beam 1. Figure 6As shown, due to the different widths of the upper adhesive steel plate 2 and the lower adhesive steel plate 3, in order to facilitate installation and ensure structural stability, the filling steel plate 6 can also be divided into two upper and lower pieces, which are respectively arranged corresponding to the upper adhesive steel plate 2 and the lower adhesive steel plate 3. No further details will be given here. In this embodiment, by providing the filling steel plate 6, not only can the hollow slab beam 1 be reinforced to a certain extent, effectively improving the stability of the hollow slab beam 1, but it can also play an auxiliary fixing role for the two longitudinal reinforcements, thereby making the two longitudinal reinforcements play a more stable reinforcement role for the hollow slab beam 1.

[0042] Example 3

[0043] The difference between Example 3 and Example 2 is that an intermediate hoop plate is also provided in this embodiment. The structure of the intermediate hoop plate is U-shaped, similar to the structure of the U-shaped hoop plate 4. The intermediate hoop plate is arranged in the middle position of the lower layer of adhesive steel plate 3. The intermediate hoop plate is used to assist in fixing the middle position of the lower layer of adhesive steel plate 3, so that the lower layer of adhesive steel plate 3 is more firmly connected, thereby further enhancing the reinforcement effect of the hollow plate beam 1.

[0044] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A hollow slab girder reinforcement structure for a bridge, comprising a plurality of hollow slab girders arranged side by side, each hollow slab girder being provided with a plurality of webs, characterized in that: The bottom surface of each hollow slab beam is provided with longitudinal reinforcements whose number is equal to and corresponds to the number of webs. The longitudinal reinforcements are arranged along the longitudinal direction of the bridge. The longitudinal reinforcements include an upper bonded steel plate and a lower bonded steel plate. The upper bonded steel plate is located between the hollow slab beam and the lower bonded steel plate; and also include transverse reinforcements arranged along the transverse direction of the bridge. All longitudinal reinforcements are located between the transverse reinforcements and the hollow slab beam.

2. The hollow slab beam reinforcement structure for bridges according to claim 1, characterized in that: The length of the upper adhesive steel plate is greater than that of the lower adhesive steel plate, and two ends of the upper adhesive steel plate protrude beyond two ends of the lower adhesive steel plate.

3. The hollow slab beam reinforcement structure for bridges according to claim 2, characterized in that: The width of the upper adhesive steel plate is greater than that of the lower adhesive steel plate, and both sides of the upper adhesive steel plate are located outside the two sides of the lower adhesive steel plate.

4. The hollow slab beam reinforcement structure for bridges according to claim 2, characterized in that: The transverse reinforcement includes a U-shaped hoop plate, which includes a horizontal section and vertical sections located at both ends of the horizontal section. The top surface of the horizontal section is connected to the bottom of the longitudinal reinforcement, and the two vertical sections are respectively connected to the webs of the hollow slab beams located on both sides of all hollow slab beams.

5. The hollow slab beam reinforcement structure for bridges according to claim 4, characterized in that: The number of the U-shaped hoop plates is at least four, wherein both ends of the upper adhesive steel plate extending beyond the lower adhesive steel plate are each provided with at least one U-shaped hoop plate, and both ends of the lower adhesive steel plate are respectively provided with at least one U-shaped hoop plate.

6. The hollow slab beam reinforcement structure for bridges according to claim 5, characterized in that: The outer sides of the hollow slab beams on both sides of all hollow slab beams are fixedly connected with longitudinal pressing plates, and the vertical sections of all U-shaped hoop plates are fixedly connected with the longitudinal pressing plates.

7. The hollow slab beam reinforcement structure for bridges according to claim 6, characterized in that: The length of the longitudinal pressing plate is greater than the length of the upper adhesive steel plate, and both ends of the longitudinal pressing plate extend beyond both ends of the upper adhesive steel plate in the horizontal direction.

8. The hollow slab beam reinforcement structure for bridges according to claim 6, characterized in that: A filling steel plate is provided between the two longitudinal reinforcements at the bottom of the same hollow slab beam, the bottom surface of the filling steel plate is in contact with the top surface of the U-shaped hoop plate, and the top surface of the filling steel plate is in contact with the bottom surface of the hollow slab beam.

9. The hollow slab beam reinforcement structure for bridges according to claim 8, characterized in that: It also includes an intermediate hoop plate, which is U-shaped. The two ends of the intermediate hoop plate are respectively connected to the outer side surfaces of the hollow slab beams on both sides of all hollow slab beams, and the middle part of the intermediate hoop plate is connected to the bottom surface of the middle part of the longitudinal reinforcement.

10. A bridge, characterized in that: It comprises a bridge hollow slab beam reinforcement structure as described in any one of claims 1-9.

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