Curve type overline footbridge structure
By using a curved overpass structure, combined with a double cantilever box girder section and a continuous steel box girder, and utilizing a buttress retaining wall section as the intersection connection section, the problems of insufficient construction safety and pedestrian convenience of existing overpasses have been solved, and the stability and aesthetics have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-14
Smart Images
Figure CN224119418U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pedestrian overpass technology, specifically relating to a curved pedestrian overpass structure. Background Technology
[0002] Overpasses are bridges that cross existing roadways such as highways, railways, or urban roads. They are further divided into separated and interchange types. Separated overpasses allow independent passage for vehicles on the upper and lower levels, while interchange overpasses allow vehicles on both levels to pass each other, requiring complex and winding ramps and occupying significant land. Pedestrian overpasses are typically located where pedestrians, bicycles, and other vehicles cross highways and first-class roads, especially in areas with significant traffic conflicts, such as stations, large commercial centers, or other intersections. Currently, to shorten construction time and reduce noise, prestressed concrete bridges are mostly used. However, because overpasses occupy the roads on both sides of existing roads, the construction environment on both sides of the existing roads poses significant safety challenges during construction. Furthermore, the structural design of the approach bridges and ramps on both sides of the existing roads needs to meet the convenience of pedestrian passage. Therefore, a curved pedestrian overpass structure should be provided. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a curved overpass pedestrian bridge structure that addresses the shortcomings of the prior art. This structure is simple and rationally designed. Utilizing a buttress-type retaining wall section as the intersection connection section enhances the connection stability and strength of the intersection connection section. By combining a double-cantilever box girder section with the continuous steel box girder of the curved overpass main bridge, reliable connections between the first and second curved approach bridges and the curved overpass main bridge can be ensured. The second curved approach bridge and the curved ramp are located on the same side of the existing road, with the exit of the curved ramp close to the existing road and the exit of the second curved approach bridge far from the existing road, thus meeting the convenient passage requirements for pedestrians crossing the existing road via the curved overpass.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a curved overpass pedestrian bridge structure, characterized in that: it includes a curved overpass main bridge, a first arc-shaped approach bridge and a second arc-shaped approach bridge respectively connected to both ends of the curved overpass main bridge, and an arc-shaped ramp connected to the second arc-shaped approach bridge. The curved overpass main bridge includes multiple continuous steel box girders connected in sequence. The first arc-shaped approach bridge, the second arc-shaped approach bridge, and the arc-shaped ramp all include a double cantilever box girder structure section and a gravity retaining wall structure section. The intersection connection section between the double cantilever box girder structure section of the arc-shaped ramp and the second arc-shaped approach bridge is a buttress retaining wall structure section. The piers of the curved overpass main bridge include a first bored pile foundation and a circular single-column pier set at the top of the first bored pile foundation. The abutments of the curved overpass main bridge are gravity abutments, and two second bored pile foundations are set below the gravity abutments.
[0005] The above-mentioned curved overpass pedestrian bridge structure is characterized in that: the double cantilever box girder structure segment is formed by sequentially splicing multiple C35 concrete double cantilever box girder beams, and the width of the cantilever slabs on both sides of the C35 concrete double cantilever box girder beam is 1.5m.
[0006] The above-mentioned curved overpass structure is characterized in that: the bridge deck of the curved overpass is a plastic pavement, the width of the plastic pavement is in the range of 6m to 7m, and glass railings are provided on both sides of the plastic pavement.
[0007] The aforementioned curved overpass pedestrian bridge structure is characterized in that: the interior of both the gravity retaining wall structure section and the buttress retaining wall structure section is filled with a gravel layer, a C35 concrete leveling layer is provided above the gravel layer, and the plastic pavement bridge deck is laid on the C35 concrete leveling layer.
[0008] This utility model has the following advantages compared with the prior art:
[0009] 1. The curved overpass of this utility model includes a curved main overpass, a first arc-shaped approach bridge, a second arc-shaped approach bridge, and an arc-shaped ramp. The curved main overpass spans over an existing road, and the second arc-shaped approach bridge and the arc-shaped ramp are located on the same side of the existing road. The exit of the arc-shaped ramp is close to the existing road, and the exit of the second arc-shaped approach bridge is far from the existing road, thus meeting the requirements of convenient passage for pedestrians after crossing the existing road via the curved overpass.
[0010] 2. This utility model combines a double cantilever box girder structure section with a gravity retaining wall structure section to form a stable first arc-shaped approach bridge, a second arc-shaped approach bridge, and an arc-shaped ramp on the roadbed. The intersection connection section between the double cantilever box girder structure section of the arc-shaped ramp and the second arc-shaped approach bridge is a buttress retaining wall structure section. Using a buttress retaining wall structure section as the intersection connection section can enhance the connection stability and strength of the intersection connection section.
[0011] 3. This utility model combines a double cantilever box girder structure with the continuous steel box girder of the curved overpass main bridge. The double cantilever box girder structure is formed by splicing multiple C35 concrete double cantilever box girders in sequence. The width of the cantilever plate of the C35 concrete double cantilever box girder is equal to the width of the cantilever of the continuous steel box girder, which can ensure the reliable connection between the first and second curved approach bridges and the curved overpass main bridge, and ensure the overall aesthetics of the curved overpass pedestrian bridge.
[0012] 4. This utility model has a simple structure, reasonable design, is easy to construct, and is easy to promote and apply.
[0013] In summary, this utility model has a simple structure and reasonable design. By using a buttress-type retaining wall structure segment as the intersection connection segment, it can enhance the connection stability and strength of the intersection connection segment. By combining the double cantilever box girder structure segment with the continuous steel box girder of the curved overpass main bridge, it can ensure the reliable connection of the first and second curved approach bridges to the curved overpass main bridge. The second curved approach bridge and the curved ramp are located on the same side of the existing road. The exit of the curved ramp is close to the existing road, while the exit of the second curved approach bridge is far from the existing road, thus meeting the pedestrian convenience requirements after crossing the existing road via the curved overpass pedestrian bridge.
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the planar structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the elevation structure of this utility model.
[0017] Figure 3 for Figure 2 AA sectional view.
[0018] Figure 4 for Figure 2 BB cross-sectional view.
[0019] Figure 5 for Figure 2 CC section view.
[0020] Figure 6 for Figure 2 EE sectional view.
[0021] Figure 7 for Figure 2 FF sectional view.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1—Curved overpass main bridge; 1-1—Continuous steel box girder; 2—First arc-shaped approach bridge;
[0024] 3—Second curved approach bridge; 4—Curved ramp; 5—Double cantilever box girder structure section;
[0025] 5-1—C35 concrete double cantilever box girder; 5-2—Cantilever slab;
[0026] 6—Gravity retaining wall structure section; 7—Buttress retaining wall structure section; 8—C35 concrete leveling layer;
[0027] 9—Plastic pavement bridge surface; 10—Gravel layer; 11—Glass railings;
[0028] 12-1—First bored pile foundation; 12-2—Circular single-column pier;
[0029] 13-1—Gravity abutment; 13-2—Second bored pile foundation;
[0030] 14—Existing roads. Detailed Implementation
[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model includes a curved overpass main bridge 1, a first arc-shaped approach bridge 2 and a second arc-shaped approach bridge 3 respectively connected to both ends of the curved overpass main bridge 1, and an arc-shaped ramp 4 connected to the second arc-shaped approach bridge 3. The curved overpass main bridge 1 includes multiple continuous steel box girders 1-1 connected in sequence. The first arc-shaped approach bridge 2, the second arc-shaped approach bridge 3, and the arc-shaped ramp 4 all include a double cantilever box girder structure section 5 and a gravity retaining wall structure section 6. The intersection of the double cantilever box girder structure section 5 of the road 4 and the second arc-shaped approach bridge 3 is a buttress retaining wall structure section 7. The piers of the curved overpass main bridge 1 include a first bored pile foundation 12-1 and a circular single-column pier 12-2 set at the top of the first bored pile foundation 12-1. The abutments of the curved overpass main bridge 1 are gravity abutments 13-1, and two second bored pile foundations 13-2 are set below the gravity abutments 13-1.
[0032] like Figure 1 and Figure 2 As shown, in this embodiment, the curved overpass pedestrian bridge includes a curved main bridge 1, a first curved approach bridge 2, a second curved approach bridge 3, and a curved ramp 4. The curved main bridge 1 spans above the existing road 14. The second curved approach bridge 3 and the curved ramp 4 are located on the same side of the existing road 14. The exit of the curved ramp 4 is close to the existing road 14, and the exit of the second curved approach bridge 3 is far from the existing road 14, thus meeting the requirement of convenient passage for pedestrians after crossing the existing road 14 via the curved overpass pedestrian bridge.
[0033] In this embodiment, the continuous steel box girder 1-1 has a beam height of 1.6m, a top width of 6.0m, and a bottom width of 3.0m; the cantilever width of the continuous steel box girder 1-1 is 1.5m.
[0034] In this embodiment, by combining the double cantilever box girder structure section 5 with the gravity retaining wall structure section 6, a stable first arc-shaped approach bridge 2, second arc-shaped approach bridge 3, and arc-shaped ramp 4 are formed on the roadbed. The intersection connection section between the double cantilever box girder structure section 5 of the arc-shaped ramp 4 and the second arc-shaped approach bridge 3 is a buttress retaining wall structure section 7. Using the buttress retaining wall structure section 7 as the intersection connection section can enhance the connection stability and strength of the intersection connection section.
[0035] like Figure 5 As shown, in this embodiment, the double cantilever box girder segment 5 is formed by sequentially splicing multiple C35 concrete double cantilever box girder beams 5-1, and the width of the cantilever slabs 5-2 on both sides of the C35 concrete double cantilever box girder beam 5-1 is 1.5m.
[0036] In this embodiment, by combining the double cantilever box girder segment 5 with the continuous steel box girder 1-1 of the curved overpass main bridge 1, the double cantilever box girder segment 5 is formed by sequentially splicing multiple C35 concrete double cantilever box girders 5-1. The width of the cantilever plate 5-2 of the C35 concrete double cantilever box girder 5-1 is equal to the width of the cantilever of the continuous steel box girder 1-1, which can ensure the reliability of the connection between the first curved approach bridge 2 and the second curved approach bridge 3 and the curved overpass main bridge 4, and ensure the overall aesthetics of the curved overpass pedestrian bridge.
[0037] like Figures 3 to 7 In this embodiment, the bridge deck of the curved overpass is a plastic pavement bridge deck 9, the width of the plastic pavement bridge deck 9 is in the range of 6m to 7m, and glass railings 11 are provided on both sides of the plastic pavement bridge deck 9.
[0038] like Figure 6 and Figure 7As shown, in this embodiment, the interior of the gravity retaining wall structure section 6 and the interior of the buttress retaining wall structure section 7 are both filled with a gravel layer 10. A C35 concrete leveling layer 8 is provided above the gravel layer 10, and the plastic pavement bridge deck is laid on the C35 concrete leveling layer 8.
[0039] like Figure 1 and Figure 2 As shown, during actual construction, firstly, the first bored pile foundation 12-1 and the second bored pile foundation 13-2 are constructed. After the bored piles are formed, the inclination should be less than 1%, and mud slurry should be used for pile foundation construction. Secondly, gravity abutment 13-1 is constructed using free slope excavation and formwork casting technology. After that, circular single-column pier 12-2 is constructed. Next, multiple continuous steel box girders 1-1 are erected in sequence. During construction, attention should be paid to checking the displacement of each support. The entire construction process should be monitored and recorded to ensure that the elevation and centerline of the continuous steel box girder 1-1 are accurate. The closure point of the continuous steel box girder 1-1 should be selected as close as possible to the middle of the span, and the closure temperature should be 15℃~20℃. Closure at high or low temperatures should be avoided. Then, the first arc-shaped approach bridge 2, the second arc-shaped approach bridge 3, and the arc-shaped ramp 4 are constructed. Finally, expansion joints are constructed, and the plastic pavement bridge deck 9 is paved.
[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.
Claims
1. A curved overpass structure, characterized in that: The system includes a curved overpass (1), a first arc-shaped approach bridge (2) and a second arc-shaped approach bridge (3) respectively connecting the two ends of the curved overpass (1), and an arc-shaped ramp (4) connected to the second arc-shaped approach bridge (3). The curved overpass (1) includes multiple continuous steel box girders (1-1) connected in sequence. The first arc-shaped approach bridge (2), the second arc-shaped approach bridge (3), and the arc-shaped ramp (4) all include a double cantilever box girder structure section (5) and a gravity retaining wall structure section (6). The arc-shaped ramp (4) The intersection of the double cantilever box girder structure section (5) and the second arc-shaped approach bridge (3) is a buttress retaining wall structure section (7). The piers of the curved overpass main bridge (1) include a first bored pile foundation (12-1) and a circular single-column pier (12-2) set at the top of the first bored pile foundation (12-1). The abutments of the curved overpass main bridge (1) are gravity abutments (13-1). Two second bored pile foundations (13-2) are set below the gravity abutments (13-1).
2. A curved overpass structure according to claim 1, characterized in that: The double cantilever box girder section (5) is formed by splicing multiple C35 concrete double cantilever box girder beams (5-1) in sequence, and the width of the cantilever slabs (5-2) on both sides of the C35 concrete double cantilever box girder beam (5-1) is 1.5m.
3. A curved overpass structure according to claim 1, characterized in that: The curved overpass has a plastic pavement (9) with a width of 6m to 7m. Glass railings (11) are provided on both sides of the plastic pavement (9).
4. A curved overpass structure according to claim 3, characterized in that: The interior of the gravity retaining wall structure section (6) and the interior of the buttress retaining wall structure section (7) are both filled with a gravel layer (10). A C35 concrete leveling layer (8) is provided above the gravel layer (10), and the plastic pavement bridge deck is laid on the C35 concrete leveling layer (8).