Prefabricated ultra-high performance concrete honeycomb arch bridge structure

Abstract

The invention discloses a prefabricated ultra-high performance concrete honeycomb arch bridge structure which comprises an arch piece, a first bridge steel frame is arranged on the side face of the arch piece, a first steel frame fixing block is arranged below the first bridge steel frame, and a fixing mechanism for fixing a bridge panel is arranged in the first steel frame fixing block. The fixing mechanism is used for fixing the bridge panel and the bridge spine, the fixing mechanism is slidably connected with the sliding sleeve, the side face of the sliding sleeve is fixedly connected with the gear sleeve shell, and the bridge structure adopts prefabricated assemblies and modular design, so that the building process is efficient and accurate. And through the steel frame fixing blocks and the bridge steel frame which are manufactured in advance, the building position can be quickly positioned and fixed, and the complexity and the time cost of site construction are reduced. And meanwhile, the design of the sliding and fastening mechanism ensures that the bridge panel and the spine can be accurately placed and stably connected, and the stability and safety of the whole structure are improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering, and in particular to a prefabricated ultra-high performance concrete honeycomb arch bridge structure. Background Art

[0002] Arch bridges have the advantages of simple structure, strong span capacity and good durability, and have a long history of application in my country. The survey results on the operation status of arch bridges show that the span-rise ratio of traditional reinforced concrete arch bridges or masonry arch bridges cannot be too small due to their relative heaviness and large thrust. In addition, due to their cumbersome construction process and long construction period, it is also difficult to ensure the quality of arch bridges. At present, the use of steel arch bridges in large-span bridges has become a general trend, but they also have problems such as complex structure, high initial construction cost and high later maintenance cost, which cannot effectively guarantee economic efficiency.

[0003] An arch is a structure that is mainly subjected to compression. Ultra-high performance concrete has super high compressive strength and durability. If ultra-high performance concrete materials are applied to arch structures, their material properties can be fully utilized, the dead weight of the structure can be reduced, the difficulty of construction and later maintenance can be reduced, the amount of foundation engineering can be reduced, the durability of the structure can be improved, and the spanning capacity of the arch can be increased.

[0004] After searching the patent number CN216765560U, a prefabricated ultra-high performance concrete honeycomb arch bridge structure is disclosed, which includes an arch unit, a rigid frame unit connected to the arch unit, and a bridge deck unit laid on the surface of the arch unit and the rigid frame unit. The arch unit and the rigid frame unit are prefabricated in sections using ultra-high performance concrete materials, and the bridge deck unit is prefabricated in sections using ordinary concrete or ultra-high performance concrete. The arch unit, the rigid frame unit and the bridge deck unit are connected into a whole by filling ultra-high performance concrete at the wet joints, and the arch unit is provided with a plurality of holes.

[0005] Compared with the existing technology, the patent with patent number CN205197709U disassembles the bridge into three units, which makes it easier to transport the bridge and is relatively simple to assemble. The prefabricated ultra-high performance concrete honeycomb arch bridge structure has the characteristics of light weight, small cross-sectional area, strong bearing capacity, material saving, simple installation, high construction efficiency, safety and environmental protection, and low overall cost.

[0006] However, in the above scheme, after the bridge is assembled into three sections, ultra-high performance concrete is poured to achieve the molding effect. However, this assembly requires a large amount of prefabricated ultra-high concrete to be poured inside, and the structure cannot be vibrated inside to achieve the effect of filling the concrete. Therefore, a prefabricated ultra-high performance concrete honeycomb arch bridge structure is proposed. Summary of the invention

[0007] The purpose of the present invention is to solve the problems in the prior art that the construction process is cumbersome, the construction period is long, and the quality of the arch bridge is difficult to ensure. At present, the use of steel arch bridges in large-span bridges has become a general trend, but they also have the problems of complex structure, high initial construction cost and high later maintenance cost, and cannot effectively guarantee the economy. Therefore, a prefabricated ultra-high performance concrete honeycomb arch bridge structure is proposed.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A prefabricated ultra-high performance concrete honeycomb arch bridge structure, comprising an arch plate, a first bridge steel frame is arranged on the side of the arch plate, a first steel frame fixing block is arranged below the first bridge steel frame, a fixing mechanism for fixing the bridge panel is arranged inside the first steel frame fixing block, the fixing mechanism is used to fix the bridge panel and the bridge spine, the fixing mechanism is slidably connected with a sliding sleeve, the side of the sliding sleeve is fixedly connected with a gear sleeve housing, the side of the gear sleeve housing is provided with a gear, the fixing mechanism is meshingly connected with the gear, the side of the gear is fixedly connected with a worm wheel, the worm wheel is meshingly connected with a worm, and fixing rings are arranged at both ends of the worm, and the fixing rings are fixed above the arch plate.

[0010] The above technical solution further includes:

[0011] A large arch hole is opened on the side of the arch plate, and small arch holes that gradually become smaller are arranged on the side of the large arch hole. Side holes are arranged inside the arch plate, and the inside of the side holes is slidably connected to a fixing mechanism, and the fixing mechanism is slidably connected to a bridge panel. A first support block is arranged under the bridge panel, and the first support block is slidably connected to the fixing mechanism.

[0012] A second bridge steel frame and a second steel frame fixing block are arranged on the side of the arch piece, and a third bridge steel frame and a third steel frame fixing block are arranged on one side of the second bridge steel frame.

[0013] A slot hole is provided on the side of the gear sleeve shell to facilitate the normal sliding of the protection fixing mechanism.

[0014] A second supporting block for supporting the worm is arranged on the side of the arch piece.

[0015] A wide groove is provided on the side of the second bridge steel frame for accommodating the bridge spine, and a pouring space for injecting ultra-high performance concrete is provided inside the third bridge steel frame.

[0016] The first bridge steel frame is provided with a plurality of narrow grooves for placing bridge spines on its side, and the third bridge steel frame is provided with a plurality of narrow grooves similar to those of the first bridge steel frame on its side.

[0017] A fastening hole for fastening the fixing mechanism is arranged above the sliding sleeve, and a casting hole for injecting ultra-high performance concrete is arranged on one side of the fastening hole.

[0018] The side of the bridge deck is provided with a plurality of groups of casting holes for introducing ultra-high performance concrete and fastening holes for fastening the fixing mechanism.

[0019] The side of the second bridge steel frame is provided with multiple groups of large arch holes and small arch holes that are exactly the same as those of the first bridge steel frame, and the side of the third steel frame fixing block is provided with multiple groups of large arch holes and small arch holes that are exactly the same as those of the second bridge steel frame.

[0020] The present invention has the following beneficial effects:

[0021] 1. In the present invention, the bridge structure adopts prefabricated components and modular design, making the construction process efficient and accurate. Through the prefabricated steel frame fixing blocks and bridge steel frames, they can be quickly positioned and fixed at the construction location, reducing the complexity and time cost of on-site construction. At the same time, the design of the sliding and fastening mechanism ensures that the bridge deck and spine can be accurately placed and firmly connected, improving the stability and safety of the overall structure.

[0022] 2. During the construction process, if there is a position deviation or fine-tuning is needed, the structure provides a flexible adjustment mechanism. Through manual operation or mechanical assistance, the bridge components can be easily moved and adjusted to ensure that each component is accurately in place. This flexibility not only improves construction efficiency, but also enhances the adaptability of the bridge structure to different terrains and conditions, enabling it to be widely used in various complex environments.

[0023] 3. In the present invention, ultra-high performance concrete is used as the main material, and the bridge structure has extremely high compressive, flexural and tensile strength. This high strength property enables the bridge to withstand greater loads and tests under extreme environmental conditions, extending its service life. At the same time, the excellent durability of ultra-high performance concrete can effectively resist long-term damage factors such as weathering, corrosion and fatigue, reducing the cost and difficulty of later maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a prefabricated ultra-high performance concrete honeycomb arch bridge structure proposed by the present invention;

[0025] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0026] Figure 3 It is a schematic diagram of the structure of the first part of the present invention;

[0027] Figure 4 for Figure 3 An enlarged schematic diagram of point B;

[0028] Figure 5 It is a schematic structural diagram of the second part of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the third part of the present invention.

[0030] In the figure: 1. arch piece; 2. first bridge steel frame; 3. first steel frame fixing block; 4. large arch hole; 5. small arch hole; 6. casting space; 7. bridge panel; 8. second bridge steel frame; 9. third bridge steel frame; 10. second steel frame fixing block; 11. third steel frame fixing block; 12. bridge spine; 13. first support block; 14. second support block; 15. worm; 16. fixing ring; 17. worm wheel; 18. gear; 19. fixing mechanism; 20. sliding sleeve; 21. gear sleeve housing; 22. fastening hole; 23. side hole; 24. casting hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] like Figure 1-Figure 6 As shown, a prefabricated ultra-high performance concrete honeycomb arch bridge structure proposed by the present invention includes an arch piece 1, a first bridge steel frame 2 is arranged on the side of the arch piece 1, a first steel frame fixing block 3 is arranged below the first bridge steel frame 2, a fixing mechanism 19 for fixing the bridge panel 7 is arranged inside the first steel frame fixing block 3, the fixing mechanism 19 is used to fix the bridge panel 7 and the bridge spine 12, the fixing mechanism 19 is slidably connected with a sliding sleeve 20, a gear sleeve housing 21 is fixedly connected to the side of the sliding sleeve 20, a gear 18 is arranged on the side of the gear sleeve housing 21, the fixing mechanism 19 is meshingly connected with the gear 18, a worm wheel 17 is fixedly connected to the side of the gear 18, the worm wheel 17 is meshingly connected with a worm 15, and fixing rings 16 are arranged at both ends of the worm 15, and the fixing ring 16 is fixed above the arch piece 1.

[0034] The working principle of the prefabricated ultra-high performance concrete honeycomb arch bridge structure proposed by the present invention is that when the bridge is to be built, the first steel frame fixing block 3, the second bridge steel frame 8 and the third bridge steel frame 9 that have been cast are first fixed to the construction sites on both sides of the bridge location where the bridge needs to be built through the first steel frame fixing block 3, the second steel frame fixing block 10 and the third steel frame fixing block 11, and then the subsequent assembly steps are started. At this stage, it is necessary to check whether the key sliding parts such as the worm wheel 17 and the worm 15 and the gear 18 and the fixing mechanism 19 can move normally to prevent problems in the subsequent tightening process.

[0035] Subsequently, the second support block 14 and the first support block 13 are respectively fixed inside each group of the first bridge steel frame 2, the second bridge steel frame 8 and the third bridge steel frame 9 for precise positioning, and it is ensured that the tightening range of these components meets the design requirements.

[0036] Next, use large mechanical equipment such as a crane to accurately place the bridge spine 12 in the upper square grooves of the first bridge steel frame 2, the second bridge steel frame 8 and the third steel frame fixing block 11. If the position deviation is large after placement, it can be fine-tuned manually to ensure the smooth progress of subsequent processes.

[0037] After the adjustment is completed, the block with holes under the bridge panel 7 is positioned through the four corners, and then the bridge panel 7 is stably placed inside the first support block 13 to ensure that the fixing mechanism 19 is smooth and unobstructed during the sliding process.

[0038] After fixing the bridge deck 7, multiple groups of workers fastened safety belts around the arch 1 to ensure safety during the construction process. Subsequently, a large tightening electric hammer was used to tighten the bridge structure. After the tightening was completed, the workers pouring ultra-high performance concrete injected concrete into the pouring hole 24 under pressure, and the fastening device and key parts were completely covered by pouring.

[0039] Embodiment 2

[0040] like Figure 1-Figure 6 As shown, based on the first embodiment, a large arch hole 4 is opened on the side of the arch piece 1, and small arch holes 5 with successively smaller holes are arranged on the side of the large arch hole 4, and a side hole 23 is arranged inside the arch piece 1, and the inside of the side hole 23 is slidably connected to the fixing mechanism 19, and the fixing mechanism 19 is slidably connected to the bridge panel 7, and a first support block 13 is arranged under the bridge panel 7, and the first support block 13 is slidably connected to the fixing mechanism 19.

[0041] A second bridge steel frame 8 and a second steel frame fixing block 10 are arranged on the side of the arch piece 1 , and a third bridge steel frame 9 and a third steel frame fixing block 11 are arranged on one side of the second bridge steel frame 8 .

[0042] A slot hole is provided on the side of the gear sleeve housing 21 to facilitate the normal sliding of the protection fixing mechanism 19 .

[0043] A second supporting block 14 for supporting the worm 15 is disposed on the side of the arch piece 1 .

[0044] A wide groove is provided on the side of the second bridge steel frame 8 for accommodating the bridge spine 12, and a pouring space 6 for injecting ultra-high performance concrete is provided inside the third bridge steel frame 9.

[0045] The side of the first bridge steel frame 2 is provided with a plurality of narrow grooves for placing the bridge spine 12 , and the side of the third bridge steel frame 9 is provided with a plurality of narrow grooves which are the same as those of the first bridge steel frame 2 .

[0046] A fastening hole 22 for fastening the fixing mechanism 19 is arranged above the sliding sleeve 20 , and a casting hole 24 for injecting ultra-high performance concrete is arranged on one side of the fastening hole 22 .

[0047] The side of the bridge deck 7 is provided with a plurality of groups of casting holes 24 for introducing ultra-high performance concrete and fastening holes 22 for fastening the fixing mechanism 19 .

[0048] The side of the second bridge steel frame 8 is provided with multiple groups of large arch holes 4 and small arch holes 5 that are exactly the same as the first bridge steel frame 2, and the side of the third steel frame fixing block 11 is provided with multiple groups of large arch holes 4 and small arch holes 5 that are exactly the same as the second bridge steel frame 8.

[0049] The working principle of the prefabricated ultra-high performance concrete honeycomb arch bridge structure proposed by the present invention is that small holes are set during the pouring process. If the pouring time is short and the concrete fluidity is poor, the side of the arch piece 1 can be gently tapped with an iron tool such as a crowbar to improve the fluidity and filling effect of the concrete. Finally, concrete is poured onto the surface of the bridge panel 7, and excess concrete on the surface is removed with a spatula or other tool to prevent blockage that affects the appearance and use effect.

[0050] At this point, the workers' construction process has been completed, and the entire prefabricated ultra-high performance concrete honeycomb arch bridge structure has also completed the construction and fastening work, ready to enter the subsequent maintenance and inspection stage.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated ultra-high performance concrete honeycomb arch bridge structure, comprising an arch piece (1), characterized in that: A first bridge steel frame (2) is arranged on the side of the arch piece (1), a first steel frame fixing block (3) is arranged below the first bridge steel frame (2), a fixing mechanism (19) for fixing the bridge panel (7) is arranged inside the first steel frame fixing block (3), the fixing mechanism (19) is used to fix the bridge panel (7) and the bridge spine (12), the fixing mechanism (19) is slidably connected with a sliding sleeve (20), the side of the sliding sleeve (20) is fixedly connected with a gear sleeve housing (21), the side of the gear sleeve housing (21) is provided with a gear (18), the fixing mechanism (19) is meshingly connected with the gear (18), the side of the gear (18) is fixedly connected with a worm wheel (17), the worm wheel (17) is meshingly connected with a worm (15), and fixing collars (16) are arranged at both ends of the worm (15), and the fixing collars (16) are fixed above the arch piece (1).

2. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 1, characterized in that: The side of the arch piece (1) is provided with a large arch hole (4), and the side of the large arch hole (4) is provided with small arch holes (5) that are successively reduced in size. The inside of the arch piece (1) is provided with a side hole (23), and the inside of the side hole (23) is slidably connected to a fixing mechanism (19), and the fixing mechanism (19) is slidably connected to a bridge panel (7). A first support block (13) is provided below the bridge panel (7), and the first support block (13) is slidably connected to the fixing mechanism (19).

3. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 1, characterized in that: A second bridge steel frame (8) and a second steel frame fixing block (10) are arranged on the side of the arch piece (1), and a third bridge steel frame (9) and a third steel frame fixing block (11) are arranged on one side of the second bridge steel frame (8).

4. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 1, characterized in that: The side surface of the gear sleeve housing (21) is provided with a slot hole for facilitating the normal sliding of the protection fixing mechanism (19).

5. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 1, characterized in that: A second supporting block (14) for supporting a worm (15) is arranged on the side of the arch piece (1).

6. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 3, characterized in that: The second bridge steel frame (8) is provided with a wide groove on its side for accommodating the bridge spine (12), and the third bridge steel frame (9) is provided with a pouring space (6) for injecting ultra-high performance concrete.

7. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 3, characterized in that: The first bridge steel frame (2) is provided with a plurality of narrow grooves on its side for placing the bridge spine (12), and the third bridge steel frame (9) is provided with a plurality of narrow grooves on its side that are the same as those of the first bridge steel frame (2).

8. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 1, characterized in that: A fastening hole (22) for fastening the fixing mechanism (19) is arranged above the sliding sleeve (20), and a casting hole (24) for injecting ultra-high performance concrete is arranged on one side of the fastening hole (22).

9. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 1, characterized in that: The side of the bridge deck (7) is provided with a plurality of groups of casting holes (24) for introducing ultra-high performance concrete and fastening holes (22) for fastening the fixing mechanism (19).

10. The prefabricated ultra-high performance concrete honeycomb arch bridge structure according to claim 3, characterized in that: The side of the second bridge steel frame (8) is provided with a plurality of large arch holes (4) and small arch holes (5) that are completely identical to those of the first bridge steel frame (2), and the side of the third steel frame fixing block (11) is provided with a plurality of large arch holes (4) and small arch holes (5) that are completely identical to those of the second bridge steel frame (8).

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