Street lamp foundation for left-right framing bridge and bridge
By setting up an isolation layer in the street lamp foundation of the left and right segmented bridges and filling asphalt paste between the steel bars and sleeves, the problem of cracking of the street lamp foundation due to incoordinated deformation of the bridge is solved, and the stability and durability of the street lamp foundation are improved.
Patent Information
- Application Number
- CN202421495151.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-27
AI Technical Summary
In left and right segmented bridges, the street lamp foundation is prone to cracking and damage due to inconsistent deformation caused by temperature changes.
A street lamp foundation for left and right segmentation bridges was designed. An isolation layer was arranged between the right lower end of the concrete base and the right bridge body, and asphalt paste was filled between the vertical steel bars and the sleeve to reduce the influence of deformation inconsistency.
Through the design of isolation layer and asphalt paste, the street lamp foundation can slide relative to the bridge deck when the bridge is deformed, avoiding concrete cracking, and alleviating the torque problem of steel bars in the concrete, which significantly improves the stability of the street lamp foundation.
Smart Images
Figure CN222716025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge street lamp construction, in particular to a street lamp foundation for a left-right divided bridge, and also to a bridge. Background Art
[0002] The function of street lamps is to provide appropriate brightness for pedestrians and vehicles in weak light conditions such as at night and on cloudy days, bringing safety to pedestrians and vehicles. Whether a street lamp can stand normally on the road depends largely on the reliability of its foundation quality. In the foundation of street lamps, the binding method of steel bars and the strength of anchor bolts have a great influence on the structural strength, and the quality of concrete is the key to the foundation quality. Concrete of poor quality is easy to crack under the action of external forces, and the foundation steel bars will be uprooted. At present, the construction technology of street lamp foundations is becoming more and more perfect.
[0003] The street lamp foundation can be applied to most situations due to its perfect craftsmanship. However, in the left and right bridges, especially the bridges with different spans, the street lamp foundation is set in the middle dividing strip. Because the spans of the left and right bridges are different, the street lamp foundation at the middle dividing strip is rigidly connected to the left and right bridges. When the deformation of the left and right bridges due to temperature changes is not coordinated, it will have a greater impact on the street lamp foundation, causing the concrete of the street lamp foundation to crack and be damaged. Utility Model Content
[0004] In order to solve the problem that the street lamp foundation at the center dividing strip of the left and right bridges mentioned above is prone to cracking and damage, the utility model provides a street lamp foundation and a bridge for left and right divided bridges, in which the left lower end of the concrete matrix in the street lamp foundation for the left and right divided bridges is connected as a whole with the left bridge body, and an isolation layer is arranged between the right lower end of the concrete matrix and the right bridge body, which can greatly reduce the deformation incoordination problem of the street lamp foundation caused by the different stiffness of the left and right bridges when the temperature changes, thereby avoiding cracking and damage of the street lamp foundation.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A street lamp foundation for a left-right divided bridge, the street lamp foundation for the left-right divided bridge is a reinforced concrete structure, the street lamp foundation for the left-right divided bridge includes a concrete base and vertical steel bars, the left lower end of the concrete base is connected to the left bridge body as a whole, and an isolation layer is arranged between the right lower end of the concrete base and the right bridge body.
[0007] The isolation layer is matched and stacked with the lower right end of the concrete base, the isolation layer is in a horizontal state, and the thickness of the isolation layer is 1mm-5mm.
[0008] The isolation layer is a rubber sheet or a plastic sheet.
[0009] A sleeve is disposed outside the vertical steel bar on the right side of the street lamp foundation. The sleeve is located in the concrete matrix, and an annular cavity is formed between the sleeve and the vertical steel bar.
[0010] The sleeve is made of steel, the lower end of the sleeve abuts against the isolation layer, and the height of the sleeve is less than the height of the concrete matrix.
[0011] The height of the sleeve is 40%-60% of the height of the concrete matrix.
[0012] The annular cavity between the sleeve and the vertical reinforcement is filled with asphalt paste.
[0013] The street lamp foundation for the left and right section bridges also includes horizontal steel bars.
[0014] A bridge comprises a left bridge body and a right bridge body which are spaced apart from each other. The left bridge body comprises a left bridge deck and a left supporting cantilever which are arranged vertically, and the right bridge body comprises a right bridge deck and a right supporting cantilever which are arranged vertically. The bridge also comprises the above-mentioned street lamp foundation for the left-right divided bridge.
[0015] The span of the left bridge body is different from that of the right bridge body. The vertical steel bars on the left side of the street lamp foundation used for the left and right sections of the bridge are connected and fixed to the left supporting cantilever, the left lower end of the concrete matrix is connected to the left bridge deck as a whole, the vertical steel bars on the right side of the street lamp foundation used for the left and right sections of the bridge are connected and fixed to the right supporting cantilever, and the right lower end of the concrete matrix, the isolation layer and the right bridge deck are stacked in sequence from top to bottom.
[0016] The beneficial effects of the utility model are:
[0017] 1. An isolation layer is set between the lower right end of the concrete matrix and the right bridge body. The isolation layer isolates the street lamp foundation and the right bridge body. When the left and right sides of the bridge are deformed due to temperature changes, the street lamp foundation can slide relative to the bridge deck to prevent the concrete of the street lamp foundation from cracking.
[0018] 2. Asphalt paste is filled between the sleeve and the vertical steel bars. When the left and right spans of the bridge are deformed due to temperature changes, the force exerted on the steel bars in the asphalt paste can be alleviated compared to that in the concrete, which greatly alleviates the problem of uncoordinated deformation of the left and right spans of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0020] Figure 1 It is a schematic diagram of a street lamp foundation for a left-right divided bridge according to the utility model.
[0021] Figure 2 It is a schematic diagram of the inside of the sleeve filled with asphalt paste.
[0022] 1. Isolation layer; 2. Sleeve; 3. Left bridge body; 4. Right bridge body; 5. Street lamp foundation for left and right divided bridges; 6. Asphalt paste;
[0023] 31. Left bridge deck; 32. Left support cantilever;
[0024] 41. Right bridge deck; 42. Right support cantilever;
[0025] 51. Horizontal steel bars; 52. Vertical steel bars; 53. Concrete matrix. Specific implementation manners
[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.
[0027] For the convenience of understanding and description, the following description of the present invention adopts absolute positional relationships. Without special instructions, the orientation word "upper" represents Figure 1 the upper side direction in Figure 1 the lower side direction in Figure 1 the left side direction in Figure 1 the right side direction in Figure 1 the direction perpendicular to the Figure 1 paper surface and pointing to the inner side of the paper surface, and the orientation word "rear" represents the direction perpendicular to the
[0028] such as Figure 1 to Figure 2 shown, a street lamp foundation for a left and right divided bridge according to an embodiment of the present invention, the street lamp foundation 5 for a left and right divided bridge is of a reinforced concrete structure, the street lamp foundation 5 for a left and right divided bridge includes a concrete matrix 53 and vertical steel bars 52, the upper part of the vertical steel bars 52 is located inside the concrete matrix 53, the left lower end of the concrete matrix 53 is integrally connected to the left bridge body 3, and an isolation layer 1 is provided between the right lower end of the concrete matrix 53 and the right bridge body 4, and the concrete matrix 53 and the right bridge body 4 cannot be in direct contact.
[0029] The left lower end of the concrete matrix in the street lamp foundation for the left and right bridge is connected to the left bridge body as a whole, and an isolation layer 1 is provided between the right lower end of the concrete matrix and the right bridge body. The concrete matrix 53 and the right bridge body 4 cannot be in direct contact with each other, which can greatly reduce the deformation incoordination problem of the street lamp foundation caused by the different stiffness of the left and right bridges when the temperature changes, and avoid cracking and damage of the street lamp foundation.
[0030] The isolation layer 1 is matched and stacked with the lower right end of the concrete base 53. The isolation layer 1 is in a horizontal state. The thickness of the isolation layer 1 can be 1mm-5mm, such as 2mm. The isolation layer 1 is an existing rubber sheet (such as ordinary rubber or building shock-absorbing rubber pad) or plastic cloth (such as a general plastic or engineering plastic).
[0031] A sleeve 2 is provided on the outer surface of the vertical steel bar 52 on the right side of the street lamp foundation 5 for the left and right section bridge. The sleeve 2 is located in the concrete matrix 53, and an annular cavity is formed between the sleeve 2 and the vertical steel bar 52. The inner diameter of the sleeve 2 can be 20mm-50mm larger than the outer diameter of the vertical steel bar 52.
[0032] The material of the sleeve 2 can be steel, such as stainless steel. The lower end of the sleeve 2 abuts against the isolation layer 1. The height of the sleeve 2 is less than the height of the concrete base 53. The distance between the upper end of the sleeve 2 and the upper part of the concrete base 53 can be 15 mm-30 mm, for example, 20 mm. The height of the sleeve 2 is 40%-60%, for example, 50%, of the height of the concrete base 53. The annular cavity between the sleeve 2 and the vertical steel bar 52 is filled with asphalt paste 6.
[0033] like Figure 1 to Figure 2 As shown in the figure, due to the better elasticity of steel bars than concrete, and due to the presence of asphalt paste, when the left and right bridges produce unequal deformation, the force on the steel bars in the asphalt paste can be alleviated relative to that in the concrete. This can further solve the problem of unequal deformation of the left and right bridges due to different spans when the temperature changes.
[0034] The lower end of the horizontal steel bar 51 passes through the lower surface of the concrete matrix 53. The street lamp foundation for the left and right divided bridge also includes a horizontal steel bar 51. The horizontal steel bar 51 is connected and fixed to the vertical steel bar 52. The horizontal steel bar 51 is located in the concrete matrix 53. The horizontal steel bar 51 can extend in the horizontal direction, and the vertical steel bar 52 extends in the up and down directions. The concrete matrix 53 can be a cubic structure, a cylindrical structure or a truncated cone structure.
[0035] A bridge is introduced below, which includes a left bridge body 3 and a right bridge body 4 spaced apart from each other. The left bridge body 3 includes a left bridge deck 31 and a left supporting cantilever 32 connected up and down, and the right bridge body 4 includes a right bridge deck 41 and a right supporting cantilever 42 connected up and down. The bridge also includes the above-mentioned street lamp foundation 5 for the left and right divided bridge.
[0036] like Figure 1 to Figure 2 As shown, there is a center strip between the left bridge body 3 and the right bridge body 4, and the street lamp foundation 5 for the left-right split bridge is located on the center strip. The span of the left bridge body 3 is different from that of the right bridge body 4. The vertical steel bar 52 on the left side of the street lamp foundation 5 for the left-right split bridge is connected and fixed to the left supporting cantilever 32, the left lower end of the concrete matrix 53 is connected to the left bridge deck 31 as a whole, the vertical steel bar 52 on the right side of the street lamp foundation 5 for the left-right split bridge is connected and fixed to the right supporting cantilever 42, and the right lower end of the concrete matrix 53, the isolation layer 1 and the right bridge deck 41 are stacked and connected in sequence from top to bottom.
[0037] The following describes the construction method of the street lamp foundation 5 and the bridge for the left and right sections of the bridge.
[0038] 1. The left vertical steel bar 52 is pre-buried and tied to the left supporting cantilever 32, and the right vertical steel bar 52 is pre-buried and tied to the right supporting cantilever 42. The connection method of the vertical steel bar 52 with the left bridge body 3 and the right bridge body 4 is the same as that in the prior art.
[0039] 2. The left bridge deck 31 and the right bridge deck 41 are constructed by cast-in-place concrete paving.
[0040] 3. A 2 mm thick isolation layer 1 is laid on the right bridge deck 41, and the sleeve 2 is placed outside the vertical steel bar 52 on the right side, and asphalt paste 6 is filled into the sleeve 2. The horizontal steel bar 51 is connected to the vertical steel bar 52, and the horizontal steel bar 51 needs to be arranged away from the sleeve 2. A template for pouring the concrete matrix 53 is set, and finally the concrete matrix 53 is poured according to the construction requirements.
[0041] The above is only a specific embodiment of the utility model, and it cannot be used to limit the scope of the utility model. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the utility model patent should still fall within the scope of this patent. In addition, the technical features of the utility model can be freely combined with each other, with technical features and technical solutions, and with technical solutions.
Claims
1. A street lamp foundation for a left-right split bridge, the street lamp foundation for a left-right split bridge being a reinforced concrete structure, characterized in that: The street lamp foundation for the left-right split bridge comprises a concrete base (53) and vertical steel bars (52); the left lower end of the concrete base (53) is connected to the left bridge body (3) as a whole; and an isolation layer (1) is provided between the right lower end of the concrete base (53) and the right bridge body (4).
2. The street lamp foundation for the left and right bridge according to claim 1, characterized in that: The isolation layer (1) is matched and stacked with the lower right end of the concrete base (53), the isolation layer (1) is in a horizontal state, and the thickness of the isolation layer (1) is 1 mm-5 mm.
3. The street lamp foundation for the left and right bridge according to claim 2, characterized in that: The isolation layer (1) is a rubber sheet or a plastic sheet.
4. The street lamp foundation for the left and right-parted bridge according to claim 1, characterized in that: A sleeve (2) is provided on the outer shell of the vertical steel bar (52) on the right side of the street lamp foundation. The sleeve (2) is located in a concrete matrix (53), and an annular cavity is formed between the sleeve (2) and the vertical steel bar (52).
5. The street lamp foundation for the left and right-parted bridge according to claim 4, characterized in that: The material of the sleeve (2) is steel, the lower end of the sleeve (2) is in contact with the isolation layer (1), and the height of the sleeve (2) is smaller than the height of the concrete base (53).
6. The street lamp foundation for the left and right-parted bridge according to claim 5, characterized in that: The height of the sleeve (2) is 40%-60% of the height of the concrete base (53).
7. The street lamp foundation for the left and right-parted bridge according to claim 4, characterized in that: The annular cavity between the sleeve (2) and the vertical steel bar (52) is filled with asphalt paste (6).
8. The street lamp foundation for the left and right bridge according to claim 1, characterized in that: The street lamp foundation for the left and right section bridge also includes horizontal steel bars (51).
9. A bridge, characterized in that: The bridge comprises a left bridge body (3) and a right bridge body (4) which are spaced apart from each other. The left bridge body (3) comprises a left bridge deck (31) and a left supporting cantilever (32) which are arranged vertically. The right bridge body (4) comprises a right bridge deck (41) and a right supporting cantilever (42) which are arranged vertically. The bridge also comprises a street lamp foundation (5) for a left-right divided bridge as described in claim 1.
10. The bridge according to claim 9, characterized in that: The span of the left bridge body (3) is different from the span of the right bridge body (4); the vertical steel bar (52) on the left side of the street lamp foundation (5) for the left-right split bridge is connected and fixed to the left supporting cantilever (32); the left lower end of the concrete base (53) is connected to the left bridge deck (31) as a whole; the vertical steel bar (52) on the right side of the street lamp foundation (5) for the left-right split bridge is connected and fixed to the right supporting cantilever (42); the right lower end of the concrete base (53), the isolation layer (1) and the right bridge deck (41) are stacked in sequence from top to bottom.