A split type maintenance-free uhpc joint assembled culvert structure
By using a segmented, maintenance-free UHPC joint prefabricated culvert structure, which utilizes UHPC joints and U-shaped steel reinforcement lap splicing, the problem of insufficient standardization of prefabricated culvert components is solved, achieving efficient and green construction and improving construction speed and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINTSZYAN TRANSPORTEJSHN KONSTRAKSHN GRUP KO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-23
AI Technical Summary
The existing prefabricated culvert components lack standardization and rely on manual connection methods, resulting in low construction efficiency, difficulty in ensuring accuracy, and the need for a large amount of on-site pouring work, thus failing to achieve the goal of rapid construction.
The prefabricated culvert structure adopts a segmented, maintenance-free UHPC joint assembly. Precast components are connected through UHPC joints, combined with U-shaped hook-shaped steel reinforcement lap splicing and maintenance-free technology to form an efficient culvert frame. A waterproof layer is installed at the joints to simplify the construction process.
It improves the standardization of components and construction efficiency, reduces on-site pouring and steel bar welding workload, enhances construction speed and quality, adapts to harsh environments, saves material and labor costs, and meets green and low-carbon requirements.
Smart Images
Figure CN224395441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of culvert construction technology, and more specifically to a segmented, maintenance-free UHPC joint assembled culvert structure. Background Technology
[0002] Precast culverts are culvert structures that are prefabricated and then assembled, and are widely used in infrastructure construction such as highways and railways. Compared with traditional cast-in-place construction methods, they have advantages such as faster construction speed, higher standardization, and more stable concrete quality. However, existing precast culverts still face many significant technical challenges that need to be addressed. Currently, precast components are generally complex in shape, lack sufficient standardization, and have cumbersome reinforcement designs, resulting in low levels of automation and large-scale production in factories. At present, the connection of precast culvert components still relies on manual installation, requiring high precision, posing significant construction difficulties, and easily accumulating errors during construction, leading to loose assembly and seriously affecting project quality. Although many existing construction schemes utilize precast assembly, a large amount of cast-in-place work is still required on-site, such as joint pouring and reinforcement welding, failing to fully achieve the goal of rapid precast construction and a significant increase in production efficiency.
[0003] Therefore, how to provide a segmented, maintenance-free UHPC joint prefabricated culvert structure that can improve construction efficiency is one of the technical problems that urgently need to be solved in this field. Utility Model Content
[0004] In view of this, the present invention provides a segmented, maintenance-free UHPC joint assembled culvert structure, the purpose of which is to solve the problems existing in the prior art.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A segmented, maintenance-free UHPC joint prefabricated culvert structure includes: a top plate, a left side plate, a right side plate, and a bottom plate; the left side plate and the right side plate are symmetrically arranged on the left and right sides of the bottom plate; the left side plate and the bottom plate, and the right side plate and the bottom plate are connected by UHPC joints; the upper inner side of the left side plate and the upper inner side of the right side plate are provided with brackets; the top plate is located on top of the two brackets.
[0007] Preferably, a waterproof layer is provided between the top plate and the left side plate, and between the top plate and the right side plate.
[0008] Preferably, the UHPC joint is provided with side plate reinforcement and bottom plate reinforcement; the bottom plate reinforcement is provided on both the left and right sides of the bottom plate; the side plate reinforcement is provided on both the left side plate and the right side plate; the bottom plate reinforcement is lapped with the corresponding side plate reinforcement; during construction, UPHC joint is formed by casting UPHC material in place at the reinforcement lap joint.
[0009] Preferably, the UHPC joint width is 20-40cm.
[0010] Preferably, the outer surface of the UHPC joint is provided with an anti-corrosion coating.
[0011] The present invention achieves the following technical advantages over the prior art:
[0012] 1) The culvert structure of this utility model has strong overall performance, simple component shape, high degree of prefabrication, standardized reinforcement and skeleton lap joint form, convenient transportation, maintenance-free operation, and good stress performance at the joints.
[0013] 2) This utility model has a high degree of assembly, which greatly reduces the amount of on-site pouring work and improves construction efficiency.
[0014] 3) The joint between the bottom plate and the side plate of this utility model has better durability and stronger adaptability in harsh environments such as high altitude, freeze-thaw and corrosion, and has a wider range of application scenarios.
[0015] 4) The UHPC joint width of this utility model is smaller, only 20-40cm, which greatly saves material usage and carbon emissions, saves labor costs, and meets the requirements of green, low-carbon and sustainable development. Attached Figure Description
[0016] Figure 1 This is an isometric view of a segmented, maintenance-free UHPC joint assembled culvert structure according to this utility model.
[0017] Figure 2 This is a front view of a segmented, maintenance-free UHPC joint assembled culvert structure according to this utility model.
[0018] Figure 3 This is an exploded view of a segmented, maintenance-free UHPC joint prefabricated culvert structure according to this utility model.
[0019] In the diagram: 1. Top slab; 2. Left side slab; 3. Right side slab; 4. Bottom slab; 5. UHPC joint; 6. Corbel; 7. Waterproof layer. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example
[0022] Reference Figure 1-3 As shown, this utility model discloses a segmented, maintenance-free UHPC joint assembled culvert structure, including: a top plate 1, a left side plate 2, a right side plate 3, and a bottom plate 4; the left side plate 2 and the right side plate 3 are symmetrically arranged on the left and right sides of the bottom plate 4; the left side plate 2 and the bottom plate 4, and the right side plate 3 and the bottom plate 4 are connected by UHPC joints 5; the upper inner side of the left side plate 2 and the upper inner side of the right side plate 3 are provided with brackets 6 for placing the top plate 1; the top plate 1 is located between the left side plate 2 and the right side plate 3, and the top plate 1 is placed on top of the two brackets 6.
[0023] In this embodiment, a waterproof layer 7 is provided between the top plate 1 and the left side plate 2, and between the top plate 1 and the right side plate 3.
[0024] In this embodiment, the waterproof layer 7 has a three-layer structure, consisting of a sealant filler layer, a waterproof butyl tape, and an elastic coating layer from bottom to top.
[0025] In this embodiment, the UHPC joint 5 is provided with side plate reinforcement and bottom plate reinforcement; bottom plate reinforcement is provided on both the left and right sides of the bottom plate 4; side plate reinforcement is provided on both the left side plate 2 and the right side plate 3; the bottom plate reinforcement is lapped with the corresponding side plate reinforcement; during construction, the bottom plate reinforcement is lapped with the side plate reinforcement, and the joint is cast in place using the curing-free UHPC technology.
[0026] In this embodiment, the bottom slab reinforcement and the side slab reinforcement are spliced in a U-shaped hook lap.
[0027] In this embodiment, the width of UHPC joint 5 is 20-40cm, eliminating 90% of the steel bar welding work in bridge joint construction, reducing the concrete pouring work by 60%, reducing labor by 65%, and increasing the on-site construction speed by 2 times.
[0028] In this embodiment, the outer surface of the UHPC joint 5 is provided with an anti-corrosion coating.
[0029] In this embodiment, both the top plate 1 and the bottom plate 4 have rectangular cross-sections.
[0030] In this embodiment, the side plate reinforcement is an L-shaped structure.
[0031] In this embodiment, the anti-corrosion coating uses an epoxy zinc-rich primer.
[0032] In this embodiment, the left side plate 2 and the right side plate 3 are symmetrical in shape and size and are parallel to each other.
[0033] In other embodiments, to further improve assembly efficiency, the bottom plate steel bars on both sides of the bottom plate 4 are directly inserted into the pre-reserved installation holes on the left side plate 2 and the right side plate 3, without the need for additional formwork. After the lower structure is cured, the top plate 1 is placed directly on the corbels 6 of the left side plate 2 and the right side plate 3 using its own weight, forming an efficient and stable prefabricated culvert.
[0034] The construction process of this utility model for a segmented, maintenance-free UHPC joint prefabricated culvert structure is as follows: 1) The top slab 1, left side slab 2, right side slab 3, and bottom slab 4 are manufactured in the factory and transported to the construction site. The left side slab 2 and right side slab 3 are pre-embedded with side plate steel bars at the bottom, and the bottom slab 4 is pre-embedded with bottom slab steel bars; 2) The side plate steel bars on the left side slab 2 and right side slab 3 are lapped with the bottom slab steel bars on the bottom slab 4. After the steel bars are lapped, a formwork is erected at the lap joint, and the joint is cast in place using maintenance-free UHPC technology to form a UHPC joint 5. Then, it is cured at 20-25° for 96 hours. After the UHPC joint 5 is cured, a U-shaped culvert frame is formed; 3) The top slab 1 is placed on top of the corbels 6 on the left side slab 2 and right side slab 3. The self-weight of the top slab 1 and the U-shaped culvert frame form a complete culvert structure. Waterproofing treatment is carried out at the gaps between the top slab 1 and the left side slab 2, and between the top slab 1 and the right side slab 3 to form a waterproof layer 7. Compared to traditional prefabricated culverts, the entire process significantly reduces the number of prefabricated components, eliminates 90% of the steel reinforcement welding work in bridge joint construction, reduces concrete pouring work by 60%, reduces labor by 65%, and increases on-site construction speed by more than 2 times.
[0035] This utility model adopts UHPC joint form and prefabricated culvert assembly structure, which reduces the amount of material used at the joint while maintaining the stability and safety of the culvert structure. At the same time, the components are highly standardized, the factory production is highly template-based, the production efficiency is high, the factory production reduces the pollution of the environment caused by on-site construction, and the bottom plate and side plate are orthogonal, which reduces the construction difficulty at the joint and shortens the construction cycle, greatly improving the construction efficiency.
[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A segmented, maintenance-free UHPC joint prefabricated culvert structure, characterized in that, include: Top plate (1), left side plate (2), right side plate (3) and bottom plate (4); the left side plate (2) and the right side plate (3) are symmetrically arranged on the left and right sides of the bottom plate (4); the left side plate (2) and the bottom plate (4) and the right side plate (3) and the bottom plate (4) are connected by UHPC joints (5); the upper inner side of the left side plate (2) and the upper inner side of the right side plate (3) are provided with brackets (6); the top plate (1) is set on the top of the two brackets (6).
2. The segmented, maintenance-free UHPC joint prefabricated culvert structure according to claim 1, characterized in that, A waterproof layer (7) is provided between the top plate (1) and the left side plate (2) and between the top plate (1) and the right side plate (3).
3. The segmented, maintenance-free UHPC joint prefabricated culvert structure according to claim 1, characterized in that, The UHPC joint (5) is provided with side plate reinforcement and bottom plate reinforcement; the bottom plate (4) is provided with bottom plate reinforcement on both the left and right sides; the left side plate (2) and the right side plate (3) are provided with side plate reinforcement; the bottom plate reinforcement overlaps with the corresponding side plate reinforcement.
4. The segmented, maintenance-free UHPC joint prefabricated culvert structure according to claim 1, characterized in that, The width of the UHPC joint (5) is 20-40cm.
5. The segmented, maintenance-free UHPC joint prefabricated culvert structure according to claim 1, characterized in that, The outer surface of the UHPC joint (5) is provided with an anti-corrosion coating.