A cable-stayed corrugated steel arch bridge structure for deep valleys
By introducing transverse connecting components and reinforcing bars into the corrugated steel arch bridge, a continuous spatial connection system is formed, which solves the problems of high construction difficulty and insufficient overall stress performance in deep valley areas, and achieves efficient improvement in overall stiffness and stability, making it suitable for bridge engineering in complex terrain.
Patent Information
- Application Number
- CN202522456838.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-19
AI Technical Summary
Existing corrugated steel arch bridges face significant construction challenges in deep valley areas due to their heavy weight, large foundation loads, and the discrete lateral connections of multiple arch rings, resulting in insufficient overall stress performance and spatial coordination, which limits their application in deep valley crossing projects.
Transverse connecting members and reinforcing bars arranged along the width of the bridge are used to form a continuous spatial connection system. Multiple corrugated steel arch rings are connected into an integral arch shell structure through the transverse connecting members and reinforcing bars, which enhances the overall rigidity and lateral stability. The structure is then assembled and installed in sections using a cable assembly method.
It improves the overall stiffness and stability of corrugated steel arch bridges in the lateral and torsional directions, reduces the reliance on temporary support systems, simplifies construction processes, and is suitable for bridge projects with multiple spans and multiple lanes.
Smart Images
Figure CN224942994U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge engineering technology, specifically to a cable-stayed corrugated steel arch bridge structure for deep valleys. Background Technology
[0002] Highway, railway, and dedicated road projects in deep valley areas often need to cross valleys, canyons, and other challenging terrain. Traditional valley-crossing bridges are mostly made of reinforced concrete arch bridges, concrete continuous beam bridges, or steel truss bridges. These bridges are heavy and have large foundation loads, often requiring high piers or large foundations for support. In deep valley areas with steep terrain and complex geological conditions, foundation construction is difficult, time-consuming, and costly, placing high demands on construction equipment and organization.
[0003] In recent years, corrugated steel plate arch bridges, relying on the characteristic of the formed corrugated steel plates sharing the load with the surrounding backfill soil, have been applied in small and medium-span highway culverts, underpasses, and shallow valley bridges. In existing projects, corrugated steel arch bridges mostly adopt a single or a few corrugated steel arch rings. When the bridge deck width is large, the overall performance is usually improved by increasing the number of parallel arch rings or arranging several transverse diaphragms and transverse stiffening beams. However, these transverse connection structures are mostly localized and discretely arranged, making it difficult to form a continuous transverse force transmission path in the bridge width direction. The degree of cooperation between the arch rings is limited, and under conditions such as vehicle eccentric loading, uneven settlement, and earthquakes, the transverse stiffness and overall stability of the structure are still insufficient.
[0004] For corrugated steel arch bridges spanning deep valleys, multiple corrugated steel arch rings need to be arranged in the bridge width direction to meet the passage requirements. However, due to the narrow valley floor space, difficulties in scaffolding erection, and limited availability of construction equipment, cable hoisting and segmented assembly methods are often required to complete the construction of the arch rings and multi-arch ring systems. Existing corrugated steel arch bridge structures are mostly designed based on conventional construction conditions. The lateral connection forms and reinforcement systems between the arch rings do not fully consider the spatial stress requirements after multiple arch rings are combined into a single arch shell. There is a lack of continuous and effective lateral and arch-oriented connections between the arch rings, making it difficult to form a corrugated steel arch shell structure with reasonable stiffness and good overall integrity for deep valley environments. This, to some extent, limits the widespread application of corrugated steel arch bridges in deep valley crossing projects. Summary of the Invention
[0005] This utility model proposes a cable-assembled corrugated steel arch bridge structure for deep valleys, which solves the problems of heavy self-weight, limited construction conditions, and insufficient overall stress performance and spatial coordination of traditional bridge types in deep valley conditions.
[0006] To achieve the above objectives, the technical solution proposed by this utility model is as follows: A cable-stayed corrugated steel arch bridge structure for deep valleys includes two foundations spaced apart along the bridge direction, and a corrugated steel arch shell structure spanning between the two foundations. The corrugated steel arch shell structure consists of at least two corrugated steel arch rings arranged along the bridge width direction. Each corrugated steel arch ring is composed of several corrugated steel arch plates sequentially spliced in the arch direction. Each corrugated steel arch plate includes a connecting side plate arranged around its perimeter and a corrugated steel plate arranged within the area enclosed by the connecting side plate. Several transverse connecting members are arranged on each corrugated steel arch plate along the width direction of the corrugated steel plate. The transverse connecting members are fixed to the corrugated steel plate and extend beyond the connecting side plate of the corresponding corrugated steel arch plate in the bridge width direction, so that the transverse connecting members between adjacent corrugated steel arch rings are connected to each other in the bridge width direction, thereby connecting the corrugated steel arch rings into an integral corrugated steel arch shell structure.
[0007] Furthermore, the transverse connecting member is an L-shaped steel member arranged along the width direction of the corrugated steel plate. Each L-shaped steel member has multiple through holes spaced apart along the bridge width direction. Among the L-shaped steel members arranged sequentially along the arch direction, the through holes located at the same bridge width position correspond to each other in the arch direction. A reinforcing bar extending along the arch direction is provided in each corrugated steel arch ring. The reinforcing bar passes through the corresponding through holes in each L-shaped steel member and the through holes on the connecting side plate in sequence, and is welded to the end of the reinforcing bar in the adjacent corrugated steel arch ring in the arch direction, so that the adjacent corrugated steel arch rings form a continuous connection system in the bridge width direction and the arch direction through the L-shaped steel members and the reinforcing bars.
[0008] Furthermore, the transverse connecting member is a channel steel member arranged along the width direction of the corrugated steel plate. The lower web of the channel steel member is attached to and fixed on the corrugated steel plate, and the end of the channel steel member extends out of the connecting side plate of the corresponding corrugated steel arch plate.
[0009] Furthermore, the transverse connecting member has a fitting section on the side near the corrugated steel plate that fits against the outer surface of the corrugated steel plate. A continuous or intermittent weld is provided between the fitting section and the outer surface of the corrugated steel plate along the fitting edge. The transverse connecting member is welded and fixed to the corrugated steel plate through the weld.
[0010] Furthermore, the corrugated steel plate is pre-set with connection holes corresponding to the positions of the transverse connecting members, and the transverse connecting members are provided with through holes that cooperate with the connection holes. Several bolts pass through the connection holes of the corrugated steel plate and the through holes of the transverse connecting members in sequence, and the transverse connecting members and the corrugated steel plate are fixedly connected by bolts.
[0011] Furthermore, after the connecting side plates of adjacent corrugated steel arch plates are aligned, they are bolted together through bolt holes provided on the connecting side plates.
[0012] Furthermore, a soil fill layer and / or a concrete fill layer are provided above the corrugated steel arch shell structure, and a bridge deck structure is provided on the soil fill layer and / or concrete fill layer.
[0013] Furthermore, the corrugated steel plate has a waveform that is sinusoidal, triangular, trapezoidal, or right-angled.
[0014] Furthermore, the foundations on both sides include foundation concrete sections, and the connecting side plates at both ends of the corrugated steel arch shell structure are fixedly connected to the foundation concrete sections through pre-embedded anchor plates or pre-embedded anchor bars set in the foundation concrete sections.
[0015] Furthermore, a waterproof layer and an isolation layer are provided between the corrugated steel arch shell structure and the backfill layer and / or concrete filling layer.
[0016] Compared with the prior art, the beneficial effects of this utility model are: This invention features a structure that combines multiple corrugated steel arch rings with transverse connecting members arranged and fixed along the width of a corrugated steel plate, extending beyond the connecting edge plate in the bridge width direction. This creates an integral corrugated steel arch shell structure. On one hand, at least two corrugated steel arch rings arranged along the bridge width direction are interconnected by transversely extending L-shaped steel connecting members. Each L-shaped steel member has through-holes arranged along the bridge width direction and corresponding to each other in the arch direction. Combined with reinforcing bars extending along the arch direction, adjacent corrugated steel arch rings form a continuous structure in both the bridge width and arch directions. The spatial connection system is beneficial to improving the overall stiffness and lateral stability of the corrugated steel arch shell, and improving the stress distribution of the structure under the action of vehicle eccentric load and construction load. On the other hand, the corrugated steel arch plates themselves are connected by bolts to the connecting side plates and work together with the transverse connecting members and reinforcing bars, so that each corrugated steel arch plate not only forms a continuous arch ring in the arch direction, but also forms an integral load-bearing shell in the bridge width direction. Under the premise of meeting the load-bearing capacity, it is beneficial to reduce the dependence of a single corrugated steel arch plate on the temporary support system, improve the prefabrication and maintainability of the structure, and is suitable for corrugated steel arch bridge projects with different layout forms such as multi-span and multi-lane.
[0017] Of course, implementing the various technical solutions of this utility model does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the multi-arch ring assembly and lateral connection of an embodiment of this utility model; Figure 2 This is a schematic diagram of the cable-assembled corrugated steel arch bridge structure according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the transverse connection of the corrugated steel arch plate according to an embodiment of this utility model; Figure 4 This is a waveform example diagram of the corrugated steel plate according to an embodiment of this utility model.
[0020] In the diagram, 10 is the connecting edge plate, 11 is the corrugated steel plate, 12 is the transverse connecting component, 13 is the reinforcing steel bar, 14 is the foundation concrete, 15 is the corrugated steel arch shell structure, and 16 is the bridge deck structure. Detailed Implementation
[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0022] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.
[0023] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0024] Example: like Figures 1-3 As shown, this embodiment provides a deep valley cable-stayed corrugated steel arch bridge structure, including two foundation concrete 14s arranged at intervals along the bridge direction, and a corrugated steel arch shell structure 15 spanning between the two foundation concrete 14s.
[0025] The corrugated steel arch shell structure 15 consists of at least two corrugated steel arch rings arranged along the width of the bridge. Each corrugated steel arch ring is composed of several corrugated steel arch plates sequentially spliced in the arch direction. Each corrugated steel arch plate includes a connecting edge plate 10 arranged around the perimeter and a corrugated steel plate 11 arranged within the area enclosed by the connecting edge plate 10. The corrugated steel plate 11 is arranged in a continuous arch shape in the crest and trough directions to bear the vertical load and work together with the surrounding backfill or concrete. After adjacent corrugated steel arch plates are aligned in the arch direction through their respective connecting edge plates 10, they are bolted together through bolt holes provided on the connecting edge plates 10 to form a continuous corrugated steel arch ring in the arch direction.
[0026] Several transverse connecting members 12 are fixed on the corrugated plate 11 of each corrugated steel arch plate along the width direction. The transverse connecting members 12 are preferably L-shaped steel members arranged along the width direction of the corrugated plate 11. A part of the transverse connecting member 12 is welded or bolted to the corrugated plate 11, and the other part extends beyond the connecting side plate 10 of the corresponding corrugated steel arch plate in the bridge width direction for connecting with the transverse connecting members 12 of the adjacent corrugated steel arch plate in the bridge width direction.
[0027] Multiple through-holes are spaced along the bridge width direction on each L-shaped steel transverse connecting member 12. Among the transverse connecting members 12 arranged sequentially along the arch direction, the through-holes at the same bridge width position correspond to each other in the arch direction. Reinforcing steel bars 13 extending along the arch direction are provided within each corrugated steel arch ring. The reinforcing steel bars 13 sequentially pass through corresponding through-holes in each transverse connecting member 12 and through-holes on the connecting side plate 10. The ends of the reinforcing steel bars 13 extend beyond the connecting side plate 10 of the adjacent corrugated steel arch ring and are welded to or connected in other ways to the ends of the reinforcing steel bars 13 in the adjacent corrugated steel arch ring in the arch direction. Through this structure, adjacent corrugated steel arch rings form a continuous connection system in both the bridge width and arch directions through the transverse connecting members 12 and the reinforcing steel bars 13, connecting all the corrugated steel arch rings as a whole into a spatial corrugated steel arch shell structure 15.
[0028] A bridge deck structure 16 is installed above the corrugated steel arch shell structure 15. The bridge deck structure 16 can be a combination of a concrete infill layer and a pavement layer, or it can be a reinforced concrete slab with a pavement layer, depending on the project requirements. A waterproof layer and an isolation layer can be installed between the corrugated steel arch shell and the bridge deck structure 16 as needed to improve structural durability and driving comfort. The foundation concrete 14 is connected to the ends of the end corrugated steel arch plates through a pre-embedded anchoring structure to ensure reliable anchoring at both ends of the corrugated steel arch shell.
[0029] Compared with traditional corrugated steel arch structures with a single arch ring or a small number of transverse connecting parts, this embodiment uses a spatial connection system formed by transverse connecting members 12 and reinforcing bars 13 to enable multiple corrugated steel arch rings to work together in the bridge width and arch direction. This significantly improves the overall stiffness and stability of the corrugated steel arch shell in the transverse and torsional directions, which is beneficial for resisting adverse effects such as vehicle eccentric loading, temperature changes and uneven settlement. At the same time, each corrugated steel arch plate is a prefabricated component in the factory, and only requires segmented hoisting and assembly on site using cable assembly methods. The construction process is simple and the assembly speed is fast, making it suitable for promotion and application in mountainous road sections with complex terrain.
[0030] In other embodiments, the deep valley cable-stayed corrugated steel arch bridge structure of this utility model is not limited to the number of arch rings, the form of transverse connecting members, and their specific values. For example, under the premise of meeting the requirements of stress and passage, the corrugated steel arch rings arranged along the bridge width direction can be two, three, or more, and the spacing between adjacent arch rings can also be adjusted according to the bridge width and load arrangement; in addition to L-shaped steel, transverse connecting members can also be made of channel steel, I-beam, square steel, or stiffening steel plates, etc., as long as they can be arranged along the width direction of the corrugated steel plate and extend the connecting edge plate in the bridge width direction for reliable connection with adjacent corrugated steel arch plates or adjacent corrugated steel arch rings, they can be regarded as equivalent replacements of the present utility model solution.
[0031] See Figure 4 In one embodiment of this utility model, the waveform of the corrugated steel plate 11 can be a sinusoidal zigzag. In other embodiments, the waveform of the corrugated steel plate 11 can also be selected as a triangular zigzag, trapezoidal zigzag, or right-angled zigzag, etc., according to engineering design needs. All of the above waveforms can be used to form a corrugated steel arch shell structure, which are equivalent variations of the corrugated steel plate waveform of this utility model.
[0032] In one optional construction method, the cable-assembled corrugated steel arch bridge structure of this utility model is applicable after cable assembly is completed: support towers are arranged at the foundation positions on both sides of the valley and the main cable across the valley is tensioned. A trolley that can move along the bridge direction is set on the main cable. The end corrugated steel arch plates are hoisted to the foundation through the cable system to form the arch foot section. Then, the corrugated steel arch plates in the middle span are hoisted and spliced from both sides towards the middle of the span to form several corrugated steel arch rings in sequence. Corrugated steel arch plates are installed one by one in the bridge width direction. The corrugated steel arch rings are connected into an integral arch shell structure through transverse connecting components and reinforcing bars. After the arch shell forms a stable force system, the cables and support towers are removed and the upper part is backfilled or concrete is poured. The above construction process is only one applicable cable assembly method of this utility model structure and does not constitute the only construction method of this utility model.
[0033] For those skilled in the art, various improvements and modifications can be made without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A cable-stayed corrugated steel arch bridge structure for deep valleys, characterized in that, The structure includes two foundations spaced apart along the bridge direction, and a corrugated steel arch shell structure spanning between the two foundations. The corrugated steel arch shell structure consists of at least two corrugated steel arch rings arranged along the bridge width direction. Each corrugated steel arch ring is composed of several corrugated steel arch plates sequentially spliced in the arch direction. Each corrugated steel arch plate includes a connecting side plate arranged around its perimeter and a corrugated steel plate arranged within the area enclosed by the connecting side plate. Several transverse connecting members are arranged on each corrugated steel arch plate along the width direction of the corrugated steel plate. The transverse connecting members are fixed to the corrugated steel plate and extend beyond the connecting side plate of the corresponding corrugated steel arch plate in the bridge width direction, so that the transverse connecting members between adjacent corrugated steel arch rings are connected to each other in the bridge width direction, thereby connecting the corrugated steel arch rings into an integral corrugated steel arch shell structure.
2. The deep valley cable-stayed corrugated steel arch bridge structure according to claim 1, characterized in that, The transverse connecting members are L-shaped steel members arranged along the width direction of the corrugated steel plate. Each L-shaped steel member has multiple through holes spaced apart along the bridge width direction. Among the L-shaped steel members arranged sequentially along the arch direction, the through holes located at the same bridge width position correspond to each other in the arch direction. Reinforcing bars extending along the arch direction are provided in each corrugated steel arch ring. The reinforcing bars pass through the corresponding through holes in each L-shaped steel member and the through holes on the connecting side plate in sequence, and are welded to the ends of the reinforcing bars in the adjacent corrugated steel arch rings in the arch direction, so that the adjacent corrugated steel arch rings form a continuous connection system in the bridge width direction and the arch direction through the L-shaped steel members and the reinforcing bars.
3. The deep valley cable-stayed corrugated steel arch bridge structure according to claim 1, characterized in that, The transverse connecting member is a channel steel member arranged along the width direction of the corrugated steel plate. The lower web of the channel steel member is attached to and fixed on the corrugated steel plate, and the end of the channel steel member extends out of the connecting side plate of the corresponding corrugated steel arch plate.
4. The deep valley cable-stayed corrugated steel arch bridge structure according to any one of claims 1 to 3, characterized in that, The transverse connecting member has a fitting section on the side near the corrugated steel plate that fits against the outer surface of the corrugated steel plate. A continuous or intermittent weld is provided between the fitting section and the outer surface of the corrugated steel plate along the fitting edge. The transverse connecting member is welded and fixed to the corrugated steel plate through the weld.
5. The deep valley cable-stayed corrugated steel arch bridge structure according to any one of claims 1 to 3, characterized in that, The corrugated steel plate has pre-set connection holes corresponding to the positions of the transverse connecting members. The transverse connecting members have through holes that mate with the connection holes. Several bolts pass through the connection holes of the corrugated steel plate and the through holes of the transverse connecting members in sequence, and the transverse connecting members are fixedly connected to the corrugated steel plate by bolts.
6. The deep valley cable-stayed corrugated steel arch bridge structure according to claim 1, characterized in that, After the connecting side plates of adjacent corrugated steel arch plates are aligned, they are bolted together through the bolt holes set on the connecting side plates.
7. The deep valley cable-stayed corrugated steel arch bridge structure according to claim 1, characterized in that, A soil fill layer and / or a concrete fill layer are provided above the corrugated steel arch shell structure, and a bridge deck structure is provided on the soil fill layer and / or concrete fill layer.
8. The deep valley cable-stayed corrugated steel arch bridge structure according to claim 1, characterized in that, The corrugated steel plate has a waveform that can be sinusoidal, triangular, trapezoidal, or right-angled.
9. The deep-gulley cable-assembly corrugated steel arch bridge structure according to claim 1, wherein, The foundations on both sides include foundation concrete sections. The connecting side plates at both ends of the corrugated steel arch shell structure are fixedly connected to the foundation concrete sections through pre-embedded anchor plates or pre-embedded anchor bars set in the foundation concrete sections.
10. The deep-gulley cable-assembly corrugated steel arch bridge structure according to claim 1, wherein, A waterproof layer and an isolation layer are provided between the corrugated steel arch shell structure and the backfill layer and / or concrete filling layer.