Dry bridge cover beam reinforcing structure and bridge

Abstract

The utility model relates to the technical field of bridge reinforcement, and discloses a dry bridge cover beam reinforcing structure and a bridge, which comprises a cover beam body, side reinforcing parts are symmetrically arranged on two sides of the cover beam body, a bottom reinforcing part is arranged at the bottom of the cover beam body, and two sides of the bottom reinforcing part are respectively connected with the side reinforcing parts on two sides of the cover beam body into a whole. Prestress systems are arranged in the side face reinforcing parts on the two sides. The reinforcing parts are arranged on the two sides and the bottom face of the bent cap body at the same time, all the reinforcing parts are connected into a whole, the reinforcing effect is better, and the problem that in the prior art, a common reinforcing mode cannot meet the requirement for high bearing performance after a bridge is transformed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge reinforcement, in particular to a dry bridge cap 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, the bridges can be reinforced, thereby effectively improving the highway's traffic capacity and service level, saving a lot of investment, and achieving good social and economic benefits.

[0003] At present, the main bridge reinforcement methods include cross-section enlargement reinforcement method, prestressed reinforcement method, steel plate bonding reinforcement method, FRP material bonding reinforcement method and external steel reinforcement method. Due to the influence of structural form or material properties, it is necessary to select a suitable reinforcement method according to the actual needs of bridge reinforcement. For example, the invention patent with publication number CN117868010A discloses a UHPC-steel reinforced pier cap beam structure and reinforcement method. By pouring UHPC concrete layers on both sides of the original cap beam to reinforce the cap beam, the bearing capacity of the pier cap beam can be improved to a certain extent. For another example, the utility model patent with publication number CN210104592U discloses a prestressed composite reinforcement structure for a pier cap beam. By adding a reinforced concrete structure and a prestressed steel strand system to the side elevation of the cap beam to be reinforced, the effect of reinforcing the cap beam can be further improved.

[0004] Although the existing reinforcement scheme can reinforce the cap beam and the reinforcement effect can meet the general use needs, for some renovated bridges, on the one hand, the load on the bridge after the renovation changes, such as the increase in lateral load, which causes a large change in the stress of the original structure. On the other hand, the bridge design specifications are constantly being revised, so the previous bridge structure may not meet the requirements of the new regulations. At this time, the use of conventional bridge reinforcement structure may still not meet the specification requirements of the bridge design after the renovation. Therefore, it is necessary to design a reinforcement structure with a more stable reinforcement effect to meet the special reinforcement needs of the renovated bridge. Utility Model Content

[0005] The utility model aims to provide a dry bridge deck beam reinforcement structure and a bridge, so as to solve the problem in the prior art that ordinary reinforcement methods cannot meet the higher load-bearing performance requirements after the bridge is renovated.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a dry bridge cap beam reinforcement structure, including a cap beam body, side reinforcement parts are symmetrically provided on both sides of the cap beam body, and a bottom surface reinforcement part is provided at the bottom of the cap beam body, and the two sides of the bottom surface reinforcement part are respectively connected to the side reinforcement parts on both sides of the cap beam body.

[0007] The principle and beneficial effects of this solution are: in this application, side reinforcement parts are set on both sides of the cap beam body to reinforce the two sides of the cap beam body, and at the same time, a bottom reinforcement part is set at the bottom of the cap beam body, and the bottom reinforcement part is used to reinforce the bottom of the cap beam body, and the bottom reinforcement part is connected with the side reinforcement parts on both sides, so that all the reinforcement structures on the cap beam body are a whole, the side reinforcement part increases the cross-section of the cap beam, and the bottom reinforcement part increases the height of the cap beam, thereby increasing the cross-section of the cap beam as a whole, making it more integrated, effectively improving the effect of reinforcing the cap beam body, and enabling the reinforced cap beam to withstand a larger load, thereby meeting the load-bearing requirements after the bridge is renovated.

[0008] Preferably, as an improvement, a prestressed system is provided in the side reinforcement parts on both sides of the cap beam body, and the prestressed system is symmetrically arranged in the side reinforcement parts along the center line of the cap beam body.

[0009] In this solution, a prestressed system is set in the side reinforcement parts on both sides, and the prestressed system is used to optimize the stress distribution of the cap beam body, further improve the reinforcement effect, and further enhance the bearing performance of the reinforced cap beam; and by setting a steel strand structure, prestress is applied to the side reinforcement parts on both sides of the cap beam body, so that the reinforced cap beam can better bear the load. The prestressed system is symmetrically set on both sides of the cap beam body, and the force is more uniform.

[0010] Preferably, as an improvement, the prestressed system includes a prestressed fixed end structure, a prestressed tensioning end structure, a prestressed steel bundle pipe, and a prestressed steel strand arranged in the prestressed steel bundle pipe; one end of the prestressed steel strand is fixedly connected to the prestressed fixed end structure, and the other end is connected to the prestressed tensioning end structure.

[0011] In this solution, the prestressed steel strands are placed in prestressed steel bundle pipes, which are used to protect the prestressed steel strands. This helps reduce the loss of prestress during the tensioning process and improves the durability and bearing capacity of the reinforced cap beam.

[0012] Preferably, as an improvement, the side reinforcement portion includes a side steel bar system and side concrete.

[0013] In this solution, the side reinforcement part includes a side steel bar system and side concrete. The reinforced concrete structure not only has high structural strength and increases the cross-section of the cap beam, but can also effectively reinforce the cap beam body. At the same time, it can also use the steel bar structure to stably connect with the cap beam body, making construction convenient and the structure stable.

[0014] Preferably, as an improvement, the side reinforcement system includes side stress main bars, side stress stirrups and side embedded bars, the side stress main bars are multiple and multiple side stress main bars are located at the top and bottom of the side reinforcement part, and the side stress main bars are located in the side stress stirrups.

[0015] In this solution, the side stress-bearing main reinforcements are located at the top and bottom of the side reinforcement part, and the side stress-bearing main reinforcements are located in the side stress-bearing stirrups, which is convenient for the setting of the side stress-bearing main reinforcements, and the set side stress-bearing main reinforcements can better bear the load, thereby making the structure of the side reinforcement part more stable; by setting the side embedded reinforcements, the structure of the side reinforcement part is stable, and the side stress-bearing main reinforcements and the side embedded reinforcements cooperate with each other, which is convenient for the pouring construction of the side concrete.

[0016] Preferably, as an improvement, the side anchor bars include side U-shaped anchor bars and L-shaped anchor bars. The side U-shaped anchor bar array is arranged in the side reinforcement part, and the L-shaped anchor bars are arranged at a position in the side reinforcement part where the space is small and the side U-shaped anchor bars cannot be arranged. For the side U-shaped anchor bars located on the prestressed system line, the prestressed steel bundle pipe is arranged in the side U-shaped anchor bars.

[0017] In this solution, the side reinforcement includes U-shaped reinforcement and L-shaped reinforcement. The side U-shaped reinforcement is set in the normal position (i.e. the plane position where the side reinforcement part is located). When the edge and corner space of the side reinforcement part is small and the side U-shaped reinforcement cannot be set, L-shaped reinforcement with a smaller length is set, so that all positions of the entire side reinforcement part can be set with side reinforcement, effectively ensuring the structural strength; at the same time, when the position of the prestressed steel bundle pipe is set on the prestressed system line and intersects with the side U-shaped reinforcement, the prestressed steel bundle pipe passes through the U-shaped structure of the side U-shaped reinforcement, so that the prestressed steel bundle pipe can be assisted by the U-shaped reinforcement to fix it, thereby making the overall structure more stable.

[0018] Preferably, as an improvement, the side U-shaped anchor bars include side standard anchor bars and side extended anchor bars, the U-shaped width of the side extended anchor bars is greater than the U-shaped width of the side standard anchor bars, and when mechanical interference occurs between the prestressed steel bundle pipe and the side standard anchor bars, the side standard anchor bars that mechanically interfere will be replaced with the side extended anchor bars.

[0019] In this solution, the U-shaped width of the extended side reinforcement is greater than the U-shaped width of the standard side reinforcement. Under normal circumstances, standard side reinforcement is set on the side of the cap beam body, and the standard side reinforcement is evenly arranged along the side of the cap beam body to ensure the uniformity of the reinforcement structure. Only when the standard side reinforcement will cause mechanical interference with the prestressed steel bundle pipe, the extended side reinforcement is used to avoid the prestressed steel bundle pipe, thereby ensuring the precise arrangement of the prestressed system.

[0020] Preferably, as an improvement, the bottom reinforcement portion includes a bottom steel bar system and bottom concrete, and the bottom concrete and the side concrete are cast and formed simultaneously.

[0021] In this solution, the bottom steel bar system is fixedly connected to the bottom surface of the cap beam body so that the bottom concrete can be firmly connected to the cap beam body. At the same time, in this solution, the bottom concrete and the side concrete are cast and formed at the same time, so that the structural performance of the bottom concrete and the side concrete on both sides of the cap beam body are more consistent, and the connection of the reinforcement structure of each part is more stable, which can achieve a better reinforcement effect.

[0022] Preferably, as an improvement, the bottom reinforcement system includes bottom stress-bearing main bars, bottom stress-bearing stirrups and bottom embedded bars, the bottom stress-bearing main bars are located at the bottom of the bottom concrete, and the bottom stress-bearing main bars are located in the bottom stress-bearing stirrups.

[0023] In this solution, the bottom reinforcement system includes bottom stress-bearing main reinforcement, bottom stress-bearing stirrups and bottom stress-bearing embedded reinforcement. The bottom stress-bearing main reinforcement is located at the bottom of the bottom concrete and plays the main stress-bearing role. The bottom stress-bearing stirrups and the tightening embedded reinforcement make the structure stable after the bottom concrete is poured, and also facilitate the stable arrangement of the bottom stress-bearing main reinforcement.

[0024] A bridge comprises the dry bridge cap beam reinforcement structure and the bridge.

[0025] In this solution, the aforementioned dry bridge cap beam reinforcement structure and bridge are provided in the energy storage device, so that the upper and lower sides of the battery can be quickly cooled at the same time, making the temperature inside the battery box more suitable for stable operation of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of Example 1 of the present utility model.

[0027] Figure 2 for Figure 1 Cross-sectional view along the middle line 1-1.

[0028] Figure 3 for Figure 1 Cross-sectional view along the middle line 2-2.

[0029] Figure 4This is a vertical view of the side reinforcement system of the cap beam body in Example 1 of the present utility model.

[0030] Figure 5 This is an elevation view of the bottom surface reinforcement system of the cap beam body in Example 1 of the present utility model.

[0031] Figure 6 for Figure 4 Cross-sectional view along the middle line 1-1.

[0032] Figure 7 for Figure 4 Sectional view along centerline 2-2 (showing the bottom reinforcement system).

[0033] Figure 8 for Figure 4 and Figure 5 Large-scale drawing of the reinforced concrete structure.

[0034] Figure 9 This is a schematic diagram of the embedded reinforcement on the side of the cap beam body in Example 1 of the present utility model.

[0035] Figure 10 This is a schematic diagram of the embedded reinforcement on the bottom surface of the cap beam body in Example 1 of the present utility model.

[0036] Figure 11 for Figure 9 Cross-sectional view along the middle line 1-1.

[0037] Figure 12 for Figure 9 Cross-sectional view along the middle line 2-2.

[0038] Figure 13 This is a schematic diagram of a prestressed system provided on the side of the cap beam body in the second embodiment of the present invention.

[0039] Figure 14 This is a schematic diagram of the prestressed system and side reinforcement arrangement in Example 2 of the present utility model.

[0040] Figure 15 This is a schematic diagram of the prestressed fixed end structure in Example 2 of the present utility model.

[0041] Figure 16 This is a schematic diagram of the prestressed tensioning end structure in Example 2 of the present utility model. DETAILED DESCRIPTION

[0042] The following is further described in detail through specific implementation methods:

[0043] The figure marks in the drawings of the specification include: cap beam body 1, side reinforcement part 2, side concrete 201, side steel bar 202, side embedded bar 203, side stress stirrup 204, U-shaped embedded bar 2031, side vertical section 20311, side horizontal section 20312, L-shaped embedded bar 2032, side extended embedded bar 2033, bottom reinforcement part 3, bottom concrete 301, bottom stress main bar 302, bottom embedded bar 303, bottom stress stirrup 304, prestressed fixed end structure 4, prestressed tensioning end structure 5, prestressed steel bundle pipe 6, prestressed steel strand 7.

[0044] Example 1

[0045] This embodiment is as shown in the attached Figure 1 、 Figure 2 and Figure 3 As shown: A dry bridge cap beam reinforcement structure includes a cap beam body 1, side reinforcement parts 2 are provided on both sides of the cap beam body 1, a bottom surface reinforcement part 3 is provided at the bottom of the cap beam body 1, and the bottom surface reinforcement part 3 is connected to the side reinforcement parts 2 on both sides as a whole.

[0046] Combine Figure 1 、 Figure 4 and Figure 6 The side reinforcement part 2 in this embodiment includes a side reinforcement system and side concrete 201, wherein the side reinforcement system includes side stress-bearing main reinforcement 202, side stress-bearing stirrups 204 and side planting reinforcement 203, combined with Figure 7 The number of the side force-bearing main reinforcements 202 is multiple, and the multiple side force-bearing main reinforcements 202 are located at the top and bottom of the side reinforcement part 2. Figure 7 The steel bars marked with "1a" and "2" are the main bars 202 for side force, and the stirrups 204 for side force are marked with "3a" and "3". Figure 8 The side stress stirrups 204 are square stirrups, and the side stress main reinforcement 202 passes through the inside of the side stress stirrups 204 horizontally. Figure 8 、 Figure 9 、 Figure 11 and Figure 12 The number of side anchor bars 203 is multiple and the multiple side anchor bars 203 are arranged longitudinally along the side of the cap beam body 1. According to the size and structure limitations of the cap beam body 1, the side anchor bars 203 in this embodiment include side U-shaped anchor bars 2031 and L-shaped anchor bars 2032. The side U-shaped anchor bars 2031 have a side vertical section 20311 and a side horizontal section 20312 vertically arranged at both ends of the side vertical section 20311. The side vertical section 20311 and the side horizontal section 20312 vertically arranged at both ends of the side vertical section 20311 form a U-shaped structure, and the side horizontal section 20312 and the side horizontal section 20312 L-shaped anchor bars are L-shaped as a whole.

[0047] During use, for the side U-shaped anchor bars 2031, the end of the side horizontal section 20312 away from the side vertical section 20311 is inserted into the side of the cap beam body 1 and fixed to the cap beam body 1, with an insertion depth of 200mm. The side vertical section 20311 is arranged vertically and a gap is provided between the side vertical section 20311 and the side of the cap beam body 1. The horizontal and vertical sections of the L-shaped anchor bars 2032 are partially fixed to the cap beam body 1. During the layout process, the side U-shaped anchor bars 2031 are preferentially arranged on the side of the cap beam body 1. Only when the layout space is too small to arrange the side U-shaped anchor bars 2031, the L-shaped anchor bars 2032 are arranged.

[0048] Combine Figure 1 、 Figure 5 and Figure 7 The bottom reinforcement part 3 includes a bottom steel bar system and bottom concrete 301. The bottom concrete 301 and the side concrete 201 are cast at the same time. The bottom steel bar system includes a bottom main bar 302, a bottom stirrup 304 and a bottom embedded bar 303. Figure 10 and Figure 11 , the number of bottom stress main reinforcement 302 is multiple and the multiple bottom stress main reinforcement 302 are arranged parallel to each other along the longitudinal direction of the cap beam body 1, all bottom stress main reinforcement 302 are located at the bottom of the bottom concrete 301, and the bottom stress main reinforcement 302 passes through the bottom stress stirrup 304 and is located in the bottom stress stirrup 304; combined Figure 10 and Figure 12 The number of bottom surface embedded bars 303 is multiple and the multiple bottom surface embedded bars 303 are arranged along the longitudinal direction of the cap beam body 1. According to the bottom width size of the cap beam body 1, two bottom surface embedded bars 303 are arranged on the same straight line along the transverse direction of the cap beam body 1. The structural shape of the bottom surface embedded bars 303 is similar to the U-shaped embedded bar 2031 and is a concave structure. The bent parts at both ends are inserted into the bottom of the cap beam body 1 and fixed to the cap beam body 1.

[0049] In this embodiment, the side steel bar system and the side concrete 201 constitute a reinforced concrete structure, and the bottom steel bar system and the bottom concrete 301 also constitute a reinforced concrete structure, and the side concrete 201 and the bottom concrete 301 are cast and formed at the same time, so that the side reinforcement part 2 and the bottom reinforcement part 3 are connected as one, and at the same time reinforce the side and bottom of the cap beam body 1, which not only increases the cross-section of the cap beam body 1, but also increases the height of the cap beam body 1, thereby having a more stable reinforcement effect on the cap beam body 1 and improving the bearing performance of the cap beam body 1.

[0050] A bridge includes the above-mentioned dry bridge deck beam reinforcement structure. Even if the bridge is modified and the load changes, the dry bridge deck beam reinforcement structure in this embodiment can still withstand the load, so that the bridge can meet the load-bearing requirements of the modified bridge.

[0051] Example 2

[0052] The difference between the second embodiment and the first embodiment is that: Figure 13 As shown, in this embodiment, a prestressed system is provided in the side reinforcement parts 2 on both sides of the cap beam body 1, and the prestressed system is symmetrically provided in the side reinforcement parts 2 along the center line of the cap beam body 1. Figure 14 、 Figure 15 and Figure 16 The prestressed system includes a prestressed fixed end structure 4, a prestressed tensioning end structure 5, a prestressed steel bundle pipe 6, and a prestressed steel strand 7 arranged in the prestressed steel bundle pipe 6. In this embodiment, the prestressed steel bundle pipe 6 is a plastic corrugated pipe, and the prestressed steel strand 7 adopts a high-strength, low-relaxation φs15.2-9 steel strand. The plastic corrugated pipe plays a protective role on the prestressed steel strand 7. Figure 3 and Figure 4 The prestressed steel strand 7 in this embodiment adopts unidirectional double-control tensioning. The prestressed fixed end structure 4 includes a fixed end with an anchor model of 15-9P, and the prestressed tensioning end structure 5 includes a tensioning end with an anchor model of 15-9. The two ends of the prestressed steel strand 7 are respectively connected to the fixed end and the tensioning end. When prestressed construction is required, the jack in the existing technology is used to complete the tensioning of the prestressed steel strand 7, which will not be repeated here.

[0053] In this embodiment, since the prestressed steel bundle pipe 6 and the prestressed steel strand 7 are arranged in the side fixing portion, and the arrangement path of the prestressed steel strand 7 is obtained according to calculation, mechanical interference may occur with the side planting reinforcement 203 during the arrangement process. In order to avoid this situation, the side fixing portion is provided with a prestressed steel bundle pipe 6 and a prestressed steel strand 7. Figure 8 In this embodiment, the side U-shaped anchor bars 2031 include side standard anchor bars 203101 and side extended anchor bars 203102. The U-shaped width of the side extended anchor bars 203102 is greater than the U-shaped width of the side standard anchor bars 203101, that is, the length of the side vertical section 20311 of the side extended anchor bars 203102 is greater than the length of the side vertical section 20311 of the side standard anchor bars 203101. When the prestressed steel bundle pipe 6 and the prestressed steel strand 7 mechanically interfere with the U-shaped anchor bars 2031, the side standard anchor bars 203101 at the mechanical interference position are replaced with the side extended anchor bars 203102, so that the prestressed steel bundle pipe 6 and the prestressed steel strand 7 will not interfere with the side extended anchor bars 203102 with a longer side vertical section 20311.

[0054] In this embodiment, not only is the cap beam body 1 reinforced by arranging side reinforcement parts 2 and bottom reinforcement parts 3 on the cap beam body 1, but a prestressed system is also arranged in the side reinforcement parts 2, and prestressing is performed after the concrete is poured, thereby further improving the bearing capacity of the entire cap beam body 1 and effectively improving the reinforcement effect of the bridge.

[0055] 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 dry bridge cap beam reinforcement structure, comprising a cap beam body, characterized in that: Side reinforcement parts are symmetrically provided on both sides of the cap beam body, and a bottom surface reinforcement part is provided at the bottom of the cap beam body. Both sides of the bottom surface reinforcement part are respectively connected to the side reinforcement parts on both sides of the cap beam body as a whole.

2. The dry bridge cap beam reinforcement structure according to claim 1, characterized in that: A prestressed system is provided in the side reinforcement parts on both sides of the cap beam body, and the prestressed system is symmetrically arranged in the side reinforcement parts along the center line of the cap beam body.

3. The dry bridge cap beam reinforcement structure according to claim 2, characterized in that: The prestressed system includes a prestressed fixed end structure, a prestressed tensioned end structure, a prestressed steel bundle pipe, and a prestressed steel strand arranged in the prestressed steel bundle pipe; one end of the prestressed steel strand is fixedly connected to the prestressed fixed end structure, and the other end is connected to the prestressed tensioned end structure.

4. The dry bridge cap beam reinforcement structure according to claim 3, characterized in that: The side reinforcement part includes a side steel reinforcement system and side concrete.

5. The dry bridge cap beam reinforcement structure according to claim 4, characterized in that: The side reinforcement system includes side stress-bearing main bars, side stress-bearing stirrups and side embedded bars. There are multiple side stress-bearing main bars, and multiple side stress-bearing main bars are located at the top and bottom of the side reinforcement part. The side stress-bearing main bars are located in the side stress-bearing stirrups.

6. The dry bridge cap beam reinforcement structure according to claim 5, characterized in that: The side anchor bars include side U-shaped anchor bars and L-shaped anchor bars. The side U-shaped anchor bar array is arranged in the side reinforcement part, and the L-shaped anchor bars are arranged at a position in the side reinforcement part where the space is small and the side U-shaped anchor bars cannot be arranged. For the side U-shaped anchor bars located on the prestressed system line, the prestressed steel bundle pipe is arranged in the side U-shaped anchor bars.

7. The dry bridge cap beam reinforcement structure according to claim 6, characterized in that: The side U-shaped anchor bars include side standard anchor bars and side extended anchor bars. The U-shaped width of the side extended anchor bars is greater than the U-shaped width of the side standard anchor bars. When mechanical interference occurs between the prestressed steel bundle pipe and the side standard anchor bars, the side standard anchor bars that cause mechanical interference will be replaced with the side extended anchor bars.

8. The dry bridge cap beam reinforcement structure according to claim 4, characterized in that: The bottom reinforcement part includes a bottom steel bar system and bottom concrete, and the bottom concrete and the side concrete are cast and formed simultaneously.

9. The dry bridge cap beam reinforcement structure according to claim 8, characterized in that: The bottom steel bar system includes bottom stress-bearing main bars, bottom stress-bearing stirrups and bottom embedded bars. The bottom stress-bearing main bars are located at the bottom of the bottom concrete, and the bottom stress-bearing main bars are located in the bottom stress-bearing stirrups.

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

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