Combined steel corrugated web box girder bridge
Patent Information
- Application Number
- CN202522270018.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0005]为了弥补以上不足，本实用新型提供了一种组合式钢波纹腹板箱梁桥，旨在改善了现有技术中焊接效率低、螺栓用量大、现场校准难及拼接缝防腐差的问题
1、本实用新型中，在组合式钢波纹腹板箱梁桥拼接中，一侧设插入板、一侧开插入槽，插入板与腹板同材质，拼接时将插入板对准槽体推入，借助楔形防滑齿初步定位，再用螺栓加固，解决传统焊接效率低、螺栓用量大、现场校准难及拼接缝防腐差的问题，大幅提高施工效率、安装精度、结构抗振性与耐久性。
Smart Images
Figure CN224741415U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of web-plate box girder bridge technology, and in particular to a composite corrugated web-plate box girder bridge. Background Technology
[0002] In the field of highway and municipal bridge construction, composite corrugated steel web box girder bridges have become an important choice for bridges with spans of 30-60m due to their combination of the compressive strength of concrete top and bottom slabs and the lightweight shear strength of corrugated steel webs. Their core structure consists of concrete top and bottom slabs, external prestressing tendons, and corrugated steel webs. With their light weight, good durability, and relatively convenient construction, they have been applied in numerous highway and river-crossing bridge projects. As transportation construction increasingly demands higher construction efficiency, structural stability, and long-term durability, the rationality and reliability of the on-site splicing process for corrugated steel webs, as key load-bearing components of bridges, directly affects the entire bridge's construction cycle, project cost, and operational safety, becoming one of the core aspects of optimizing this type of bridge technology.
[0003] Currently, the corrugated steel web splicing of composite corrugated web box girder bridges mostly adopts a mechanical structure of full welding or flange bolt connection. The full welding process requires on-site welding of the butt joint edges of adjacent webs. The web positions are first fixed by temporary supports, and then professional welders complete the weld construction using methods such as arc welding. The strength of the weld enables force transfer and structural connection between the webs. The flange bolt connection process involves welding flanges to the ends of the webs. After aligning the flanges of adjacent webs on-site, the splicing is achieved by tightening multiple sets of bolts. The preload of the bolts ensures the stability of the connection between the webs. Both processes rely on manual on-site operation to complete the core splicing steps.
[0004] Existing all-welded splicing processes suffer from significant efficiency issues. Pre-welding requires meticulous grinding and cleaning of the web joint edges; welding current and voltage must be controlled during welding to prevent deformation; and post-weld inspection and repair are necessary. The splicing of a single web segment often takes 2-3 hours and is significantly affected by on-site temperature, humidity, and welder skill levels. In bridge construction projects with tight schedules, low welding efficiency directly extends the overall construction period and increases on-site management costs. Furthermore, the large volume of on-site welding work can lead to inconsistent weld quality due to fluctuating construction environments, failing to meet the demands of high-efficiency construction in large-scale bridge projects. Therefore, a composite corrugated web box girder bridge is proposed to address these problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a composite corrugated steel web box girder bridge, which aims to improve the problems of low welding efficiency, large bolt usage, difficulty in on-site calibration, and poor corrosion protection of splice joints in the existing technology.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A composite corrugated steel web box girder bridge includes a top plate, two corrugated steel webs and a bottom plate. The outer wall of the corrugated steel webs is disposed between the top plate and the bottom plate. The two corrugated steel webs are respectively disposed on both sides in a symmetrical manner. A guide component is provided on the outer wall of the top plate. The guiding assembly includes two side insertion plates and two transverse insertion plates. One side of the transverse insertion plate is fixedly connected to the outer wall of the top plate, and the other side of the transverse insertion plate is fixedly connected to the outer wall of the bottom plate. One side of each of the two side insertion plates is fixedly connected to the outer wall of two corrugated steel webs. A transverse insertion groove is formed inside the top plate and the bottom plate, and a side insertion groove is formed inside the two corrugated steel webs. The outer wall of the transverse insertion plate is slidably connected inside the transverse insertion groove, and the outer wall of the side insertion plate is slidably connected inside the side insertion groove. Waterproof components are provided inside both the side insertion plates and the transverse insertion plates.
[0007] As a further description of the above technical solution: The top plate and the bottom plate are internally threaded with bolts to the corrugated steel web, and the bolts are used for connection.
[0008] As a further description of the above technical solution: Both the side insertion plate and the horizontal insertion plate have connecting grooves inside for bolts to pass through and connect.
[0009] As a further description of the above technical solution: The waterproof component includes a rubber ring one and a rubber ring two, with the outer wall of the rubber ring one fixedly connected to the inside of the horizontal insertion plate.
[0010] As a further description of the above technical solution: The outer wall of the second rubber ring is fixedly connected to the inside of the side insertion plate, and the first rubber ring and the second rubber ring are used to waterproof the connection.
[0011] As a further description of the above technical solution: The horizontal insertion plate has a V-shaped water channel inside, which is used to guide the water that slides in.
[0012] As a further description of the above technical solution: The side insertion plate has a drainage groove inside, which is used to drain the guided water.
[0013] This utility model has the following beneficial effects: 1. In this utility model, in the splicing of a combined corrugated steel web box girder bridge, an insertion plate is provided on one side and an insertion groove is opened on the other side. The insertion plate is made of the same material as the web. During splicing, the insertion plate is aligned with the groove and pushed in. It is initially positioned with the help of wedge-shaped anti-slip teeth and then reinforced with bolts. This solves the problems of low welding efficiency, large bolt usage, difficulty in on-site calibration, and poor corrosion protection of splice joints in traditional methods, and greatly improves construction efficiency, installation accuracy, structural vibration resistance, and durability.
[0014] 2. In this utility model, a rubber ring is pre-set inside the insertion plate, and a V-shaped water channel is opened inside the plate. The rubber ring can fill the gap between the insertion plate and the channel, enhancing the sealing performance. One end of the V-shaped water channel is connected to the inside of the channel, and the other end extends to the outside of the web plate, which can guide the drainage of a small amount of rainwater that has seeped in. This solves the problems of easy water accumulation and corrosion at the splice joint and poor sealing effect, further improving the corrosion resistance and long-term durability of the structure, while ensuring the stress stability of the splice. Attached Figure Description
[0015] Figure 1 This is a three-dimensional schematic diagram of a combined corrugated steel web box girder bridge proposed in this utility model. Figure 2 This is a schematic diagram of the bolt structure of a combined corrugated steel web box girder bridge proposed in this utility model; Figure 3 This is a schematic diagram of the transverse insert plate of a combined corrugated steel web box girder bridge proposed in this utility model. Figure 4 This is a structural schematic diagram of the closed ring of a combined corrugated steel web box girder bridge proposed in this utility model. Figure 5 This is a schematic diagram of the side insert plate of a combined corrugated steel web box girder bridge proposed in this utility model.
[0016] Legend: 1. Top plate; 2. Corrugated steel web plate; 3. Bottom plate; 4. Side insert plate; 5. Horizontal insert plate; 6. Horizontal insert groove; 7. Side insert groove; 8. Bolt; 9. Connecting groove; 10. Rubber ring one; 11. V-shaped water channel; 12. Rubber ring two; 13. Leakage channel. Detailed Implementation
[0017] 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.
[0018] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a composite corrugated steel web box girder bridge, comprising a top plate 1, two corrugated steel webs 2, and a bottom plate 3. Both the top plate 1 and the bottom plate 3 are C50 prestressed concrete structures, used to enhance the tensile strength of the concrete and prevent cracking when subjected to bending moments generated by vehicle loads, thus ensuring the load-bearing stability of the bridge structure. The selection of the concrete strength grade and the type of reinforcing steel conforms to highway bridge design specifications and is common knowledge, so it will not be elaborated further here. The outer wall of the corrugated steel webs 2 is located between the top plate 1 and the bottom plate 3. The two corrugated steel webs 2 are symmetrically located on both sides, forming a closed box girder section. This section structure can enhance the overall torsional resistance of the bridge and is suitable for curved bridges or multi-lane load scenarios. The outer wall of the top plate 1 is provided with guiding components. The guiding assembly includes two side insert plates 4 and two transverse insert plates 5. Both the side insert plates 4 and the transverse insert plates 5 are made of Q355qD steel plate of the same material as the corrugated steel web plate 2 to enhance the connection strength. One side of one transverse insert plate 5 is fixedly connected to the end position of the outer wall of the top plate 1 by submerged arc welding. The welding joint adopts double-sided welding process to ensure that the connection strength meets the shear force transmission requirements. One side of one transverse insert plate 5 is fixedly connected to the outer wall of the top plate 1, and the other side of one transverse insert plate 5 is fixedly connected to the outer wall of the bottom plate 3. One side of each of the two side insert plates 4 is fixedly connected to the outer wall of the two corrugated steel web plates 2. The top plate 1 and the bottom plate 3 are both provided with transverse insertion grooves 6. The two corrugated steel web plates 2 are both provided with side insertion grooves 7. The outer wall of the transverse insert plate 5 is slidably connected to the inside of the transverse insertion groove 6, and the outer wall of the side insert plate 4 is slidably connected to the inside of the side insertion groove 7. Waterproof components are provided inside both the side insert plates 4 and the transverse insert plates 5. The top plate 1 and bottom plate 3 are internally threaded with bolts 8 to the corrugated steel web 2. The bolts 8 are made of 8.8 grade high-strength carbon steel and are hot-dip galvanized with a zinc layer thickness of ≥80μm. They are used to connect the top plate 1, bottom plate 3 and corrugated steel web 2. The pre-tightening force of the bolts 8 tightly fixes the three together, ensuring that the load is effectively transferred between the three and avoiding loosening of the connection. The bolts 8 are used for connection. The side insert plate 4 and the transverse insert plate 5 are both provided with connecting grooves 9 for the bolts 8 to pass through and connect.
[0019] Reference Figure 3 , Figure 4 and Figure 5The waterproof components include rubber ring 10 and rubber ring 12, both made of EPDM rubber. This material has excellent weather resistance, aging resistance and elasticity, and can maintain stable performance in a temperature range of -40℃ to 120℃. It can adapt to the environmental temperature changes during bridge operation, which is common knowledge and will not be elaborated on here. The outer wall of rubber ring 10 is fixedly connected to the inside of the horizontal insertion plate 5, and the outer wall of rubber ring 12 is fixedly connected to the inside of the side insertion plate 4. Rubber ring 10 and rubber ring 12 are used to waterproof the connection. A V-shaped water channel 11 is opened inside the horizontal insertion plate 5. One end of the V-shaped water channel 11 extends to the insertion end of the horizontal insertion plate 5 and connects to the inside of rubber ring 10. The other end extends obliquely to the outside of the horizontal insertion plate 5, and the outlet end is 3° lower than the inlet end. The V-shaped water channel 11 is used to guide the water that slides in. When a small amount of rainwater breaks through the rubber ring 10 and seeps in, it will flow into the V-shaped water channel 11 due to gravity. With the help of the water-gathering effect of the V-shaped structure and the inclined slope, the water is quickly guided to the outside of the horizontal insertion plate 5, so as to avoid the water from accumulating in the horizontal insertion groove 6. The V-shaped water channel 11 is used to guide the water that slides in. The side insertion plate 4 has a drain groove 13 inside, which is used to drain the guided water.
[0020] Working principle: When assembling the main structure of a composite corrugated steel web box girder bridge, the first step is to accurately place the corrugated steel web 2 between the top plate 1 and the bottom plate 3 according to the design position, based on the prefabrication of the prefabricated components. After ensuring that the connection nodes of the three are aligned, multiple sets of bolts 8 are used to pass through the reserved holes of the top plate 1, the corrugated steel web 2 and the bottom plate 3 and tighten them, so that the three form a stable overall load-bearing unit, laying the foundation for the subsequent splicing of bridge sections.
[0021] The connection structure achieves efficient docking: the pre-set side insertion plate 4 and transverse insertion plate 5 on one side of the beam bridge unit to be spliced are aligned with the corresponding transverse insertion slot 6 and side insertion slot 7 opened inside the other beam bridge unit, respectively. Insertion is guided by the matching structure between the insertion plate and the insertion slot, ensuring splicing accuracy without additional manual calibration. After insertion, bolts 8 are used to pass through the corresponding bolt holes in the side insertion plate 4, transverse insertion plate 5, and slot to achieve initial stable connection. Then, the locking structure at the end of the insertion plate and the connecting slot 9 further strengthens the pull-out and shear resistance of the splicing node, ensuring connection reliability.
[0022] To enhance the corrosion resistance of the splicing joints, rubber ring 10 and rubber ring 2 12 are pre-installed on the outer sides of the side insertion plate 4 and the transverse insertion plate 5, respectively. When the insertion plate is fully inserted into the groove, the rubber ring 10 and rubber ring 2 12 will press tightly against the gap between the insertion plate and the groove, forming a sealed waterproof barrier that effectively prevents external water from entering the splice. Simultaneously, V-shaped water channels 11 are pre-cut inside the side insertion plate 4 and the transverse insertion plate 5, and drainage channels 13 are set at the bottom of the transverse insertion groove 6 and the side insertion groove 7. Even if a small amount of water seeps through the rubber ring barrier, it can be guided by the V-shaped water channels 11 to the drainage channels 13, and finally discharged from the outside of the bridge beam through the drainage channels 13, preventing water from accumulating inside the device and causing steel corrosion, thus ensuring the long-term operational safety of the bridge.
Claims
1. A composite corrugated steel web box girder bridge, comprising a top plate (1), two corrugated steel webs (2) and a bottom plate (3), characterized in that: The outer wall of the corrugated steel web (2) is disposed between the top plate (1) and the bottom plate (3), and the two corrugated steel webs (2) are respectively disposed on both sides in a symmetrical manner. The outer wall of the top plate (1) is provided with a guide component. The guiding assembly includes two side insertion plates (4) and two horizontal insertion plates (5). One side of the horizontal insertion plate (5) is fixedly connected to the outer wall of the top plate (1), and the other side of the horizontal insertion plate (5) is fixedly connected to the outer wall of the bottom plate (3). One side of each of the two side insertion plates (4) is fixedly connected to the outer wall of two corrugated steel web plates (2). Both the top plate (1) and the bottom plate (3) have horizontal insertion grooves (6) inside, and both corrugated steel web plates (2) have side insertion grooves (7) inside. The outer wall of the horizontal insertion plate (5) is slidably connected to the inside of the horizontal insertion groove (6), and the outer wall of the side insertion plate (4) is slidably connected to the inside of the side insertion groove (7). Both the side insertion plate (4) and the horizontal insertion plate (5) are provided with waterproof components.
2. The composite corrugated web box girder bridge according to claim 1, characterized in that: The top plate (1) and the bottom plate (3) are internally threaded with bolts (8) to the corrugated steel web plate (2), and the bolts (8) are used for connection.
3. A combined steel corrugated web box girder bridge according to claim 2, characterized in that: Both the side insertion plate (4) and the horizontal insertion plate (5) have connecting grooves (9) for the bolts (8) to pass through and connect.
4. The combined steel corrugated web box girder bridge according to claim 3, characterized in that: The waterproof component includes a rubber ring one (10) and a rubber ring two (12), with the outer wall of the rubber ring one (10) fixedly connected to the inside of the horizontal insertion plate (5).
5. A combined steel corrugated web box girder bridge according to claim 4, characterized in that: The outer wall of the second rubber ring (12) is fixedly connected to the inside of the side insertion plate (4), and the first rubber ring (10) and the second rubber ring (12) are used to waterproof the connection.
6. A combined steel corrugated web box girder bridge according to claim 5, characterized in that: The horizontal insertion plate (5) has a V-shaped water channel (11) inside, which is used to guide the water that slides in.
7. A combined steel corrugated web box girder bridge according to claim 6, characterized in that: The side insert plate (4) has a drainage groove (13) inside, which is used to drain the guided water.