Cover slab culvert combining foundation pit supporting and bridge functions
Through the cover culvert structure combining foundation pit support and bridge functions, the use of cast piles and reinforced concrete table cap side walls solves the construction problems of complex construction sites, achieving low-cost and efficient cover culvert construction, providing stable and comfortable driving conditions and convenient maintenance methods.
Patent Information
- Application Number
- CN202422283502.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In places with complex construction conditions, existing cover culverts cannot be excavated by sloping and excavating, resulting in difficult construction and high cost.
The cover culvert structure combining foundation pit support and bridge functions is adopted, including retaining walls, bottom protective bottom layer and top beams. The table caps and side walls are cast in one piece with cast piles and reinforced concrete, combined with elastic expansion joints and waterproof layers, to form a continuous bridge deck paving, reducing construction difficulty and cost.
It realizes efficient construction at complex construction sites, reduces costs, and provides smooth and comfortable driving conditions, reduces noise and vibration, and facilitates maintenance and cleaning.
Smart Images
Figure CN223074629U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of water conservancy projects, and particularly to a box culvert combining foundation pit support and bridge functions. Background Technique
[0002] Currently, during the construction of box culverts, the method of slope excavation is generally adopted, and after excavation, the wall is poured, etc.
[0003] However, in some places with complex construction conditions, the method of slope excavation cannot be adopted. Therefore, our company has developed a new culvert structure to meet the construction requirements of complex construction sites. Utility Model Content
[0004] The purpose of this application is to provide a box culvert combining foundation pit support and bridge functions to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, this application provides a box culvert combining foundation pit support and bridge functions, adopting the following technical solutions:
[0006] A box culvert combining foundation pit support and bridge functions includes retaining walls, a bottom protection layer, and a top cross beam. The retaining walls are symmetrically arranged on both sides of the top cross beam. The retaining walls include a number of bored piles arranged side by side. A capping beam is provided at the top of the bored piles, and a side wall is fixed to the side of the bored piles. The capping beam has a notch. The two sides of the top cross beam are respectively arranged in the notches of the capping beams on both sides. The surface of the notch is coated with a waterproof layer. An elastic expansion joint is provided between the end of the cross beam and the side wall of the notch. The elastic expansion joint includes a bottom polystyrene foam layer and a top polyurethane glue layer.
[0007] The capping beam and the side wall are integrally cast with reinforced concrete.
[0008] The waterproof layer is applied in the way of three felts and four coats of asphalt.
[0009] The bottom protection layer is paved with a number of bricks.
[0010] Preferably, an asphalt surface layer is paved on the surface of the top cross beam. The asphalt surface layer and the top of the capping beam are on the same plane, and a crushed stone layer is provided between the asphalt surface layer and the capping beam.
[0011] By adopting the above technical solutions, TST crushed stones are directly paved at the joints, forming a continuous body with the front and rear bridge deck or road pavement. The bridge deck is flat and seamless. Driving on it is naturally smoother, more comfortable, quieter, and has less vibration than a jointed bridge, and has the advantages of being easy to maintain, clean, and remove snow.
[0012] Preferably, to ensure the overall strength, a steel skeleton is arranged inside the capping beam and the side wall.
[0013] In summary, the present application includes at least one of the following beneficial technical effects: When constructing the box culvert that combines foundation pit support and bridge functions, there is no need for slope excavation. Only the construction of row piles on both sides is required. These piles act as retaining piles during construction and directly serve as the side wall structure of the box culvert in the later stage of the project, greatly reducing the construction cost and meeting the construction requirements of complex construction sites. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic side view structure diagram of an embodiment of the present application.
[0015] Figure 2 It is a schematic top view sectional structure diagram for showing the retaining wall in an embodiment of the present application.
[0016] Figure 3 It is a schematic diagram showing the connection relationship between the top cross beam and the abutment cap in an embodiment of the present application.
[0017] Description of reference numerals: 1, retaining wall; 11, cast-in-place pile; 12, abutment cap; 121, notch; 13, side wall; 2, bottom protective layer; 3, top cross beam; 4, bottom foam plastic layer; 5, top polyurethane glue layer; 6, gravel layer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will further describe the present application in detail Figures 1-3 in conjunction with the accompanying drawings.
[0019] An embodiment of the present application discloses a box culvert that combines foundation pit support and bridge functions. Referring to Figures 1-3 , it includes a retaining wall 1, a bottom protective layer 2 and a top cross beam 3. The retaining walls 1 are symmetrically arranged on both sides of the top cross beam 3. The retaining wall 1 includes a number of cast-in-place piles 11 arranged side by side. Abutment caps 12 are provided at the tops of the cast-in-place piles 11. Side walls 13 are fixed to the sides of the cast-in-place piles 11. The abutment caps 12 and the side walls 13 are integrally cast with reinforced concrete. To ensure the strength of the side walls 13 and the abutment caps 12, steel skeletons are arranged inside the abutment caps 12 and the side walls 13. The abutment caps 12 have notches 121. The two sides of the top cross beam 3 are respectively arranged in the notches 121 of the two side abutment caps 12. Waterproof layers are coated on the surfaces of the notches 121. Elastic expansion joints are provided between the ends of the cross beam and the side walls of the notches 121. The elastic expansion joints include a bottom foam plastic layer 4 and a top polyurethane glue layer 5.
[0020] An asphalt surface layer is paved on the surface of the top cross beam 3. The asphalt surface layer and the top of the abutment cap 12 are on the same plane. A gravel layer 6 is provided between the asphalt surface layer and the abutment cap 12. TST gravel is directly paved at the joints, forming a continuous body with the front and rear bridge deck or road surface pavements. The bridge deck is flat and seamless. Driving is naturally smoother, more comfortable, quieter, and has less vibration than a bridge with joints. It also has the advantages of being easy to maintain, clean, and remove snow.
[0021] The waterproof layer is applied in the way of three layers of felt and four coats of tar. The term "three layers of felt and four coats of tar" is a general name for the cross - use of asphalt felt and liquid tar for the top waterproof treatment. During the operation, first, a layer of liquid tar is brushed on the already covered roof (load - bearing but not waterproof). Then, a layer of asphalt felt is laid, and then a layer of liquid tar is brushed on the felt. Next, the second layer of felt is laid in a direction perpendicular to the first layer of asphalt felt. Then, liquid tar is brushed again, and the third layer of felt is laid in the direction of the first layer of felt. Finally, a layer of liquid tar is brushed on top. In this way, a total of four coats of tar are brushed and three layers of felt are laid, so it is called three layers of felt and four coats of tar.
[0022] To protect the riverbed at the bottom of the culvert, the bottom protective layer 2 is laid by a number of bricks.
[0023] The implementation principle of a box culvert combining foundation pit support and bridge function in the embodiment of this application is as follows:
[0024] First, the construction work of the row - by - row cast - in - place piles 11 on both sides is carried out. These cast - in - place piles 11 act as support piles during the construction period and directly serve as the side - wall 13 structure of the box culvert in the later stage of the project. After the construction of the cast - in - place piles 11 is completed, the soil between the two rows of cast - in - place piles 11 is excavated. Six bricks are laid at the bottom for protection, and a steel - bar framework is built between the cast - in - place piles 11 to pour the concrete cap 12 and the reinforced concrete panel in front of the cast - in - place piles 11. Finally, the pre - cast bridge slabs are hoisted and the surface layer is laid, then the construction of the entire box culvert can be completed.
[0025] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A box culvert combining foundation pit support and bridge functions, characterized in that: It includes a retaining wall (1), a bottom protection layer (2) and a top cross beam (3). The retaining wall (1) is symmetrically arranged on both sides of the top cross beam (3). The retaining wall (1) includes a number of cast-in-place piles (11) arranged side by side. A coping (12) is provided at the top of the cast-in-place pile (11), and a side wall (13) is fixed to the side of the cast-in-place pile (11). The coping (12) has a notch (121). Both sides of the top cross beam (3) are respectively arranged in the notches (121) of the coping (12) on both sides. The surface of the notch (121) is coated with a waterproof layer. An elastic expansion joint is provided between the end of the cross beam and the side wall of the notch (121). The elastic expansion joint includes a bottom foam plastic layer (4) and a top polyurethane glue layer (5).
2. The box culvert combining foundation pit support and bridge function according to claim 1, wherein: The coping (12) and the side wall (13) are integrally cast with reinforced concrete.
3. The box culvert integrating foundation pit support and bridge function according to claim 1 is characterized in that: The waterproof layer is applied in the way of three layers of felt and four coats of oil.
4. The box culvert combining foundation pit support and bridge function according to claim 1, wherein: The bottom protection layer (2) is paved with a number of bricks.
5. The box culvert integrating foundation pit support and bridge function according to claim 1, wherein: The surface of the top cross beam (3) is paved with an asphalt surface layer. The asphalt surface layer and the top of the coping (12) are on the same plane, and a gravel layer (6) is provided between the asphalt surface layer and the coping (12).
6. The box culvert combining foundation pit support and bridge function according to claim 1, characterized in that: The coping (12) and the side wall (13) are internally provided with a steel skeleton.