Stand column structure for special-shaped steel cable-stayed bridge and special-shaped steel cable-stayed bridge
By setting arc-shaped buffer structures and diversion channels on both sides of the vase-shaped piers, the problem of pier damage under the impact of water flow was solved, the impact force and erosion of water flow were reduced, and the stability and aesthetics of the bridge were improved.
Patent Information
- Application Number
- CN202520529114.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-25
AI Technical Summary
When bridges are built over rivers, the piers are subjected to the impact of the water flow. Piers with regular cross-sections are particularly prone to damage, and the impact of the water flow causes severe damage to the right-angled ends of the piers.
Buffer structures are set on both sides of the vase-shaped pier. The buffer structures have arc-shaped surfaces and buffer surfaces to guide water flow separation and reduce water flow resistance. Combined with the guide channel, turbulence is created to reduce water flow erosion, and the block prevents the bridge body from shifting laterally.
It effectively reduces the impact of water flow on the vase-shaped piers, reduces water erosion damage, improves the stability and aesthetics of the column structure, and prevents lateral movement of the bridge.
Smart Images
Figure CN223823990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge design technology, and in particular to a column structure for an irregular steel cable-stayed bridge and an irregular steel cable-stayed bridge. Background Technology
[0002] With social development and technological progress, numerous infrastructure projects have been built and deployed in my country, among which bridges are key facilities for overcoming waterway restrictions.
[0003] However, at least the following problem exists in the relevant technology: bridges are often built across rivers, and the piers located below the bridge deck are subjected to the impact of water flow. In combination with the fact that the cross-section of the piers in the relevant technology is a regular section, such as a rectangular section, when subjected to the impact of water flow, although the right-angled ends can cut the water flow and reduce the impact of water flow, this will also make the right-angled ends more prone to damage than other parts. Summary of the Invention
[0004] The first objective of this invention is to provide a column structure for a non-linear steel cable-stayed bridge that can guide and dissipate water flow and reduce the erosion caused by water flow when subjected to water impact, thereby reducing its own pressure.
[0005] The second objective of this invention is to provide an irregular steel cable-stayed bridge using a column structure.
[0006] The purpose of this utility model is achieved as follows:
[0007] A column structure for an irregularly shaped steel cable-stayed bridge, comprising:
[0008] Bridge body;
[0009] Multiple pier top supports are located below the bridge structure to support it.
[0010] The vase-shaped pier is located below the pier top support to support the pier top support, and the top of the vase-shaped pier is provided with a limiting groove for limiting the bridge body and the pier top support.
[0011] A support platform is placed below the vase base to support it.
[0012] Multiple cast-in-place piles are installed below the pile cap to support it.
[0013] The characteristics are:
[0014] Both sides of the vase-shaped pier are equipped with buffer structures to separate the water flow impacting the vase-shaped pier. The buffer structures have arc-shaped surfaces.
[0015] Compared with existing technologies, the technical effects achieved by this solution are as follows: By setting a buffer structure on the side of the vase-shaped base, the buffer structure can guide and dissipate the water flow to both sides when the vase-shaped base is impacted by water, thereby reducing the impact force on the vase-shaped base; the curved surface can reduce water flow resistance when the vase-shaped base is impacted by water flow from the side, thereby reducing the damage to the buffer structure caused by water erosion. At the same time, the curved surface and the vase-shaped base can also improve the overall aesthetics of the column structure.
[0016] In one embodiment of this utility model, the buffer structure includes a straight segment and an arc segment, the straight segment is connected to the arc segment, and the straight segment is located at the lower end of the arc segment. The limiting groove is formed at the end of the arc segment away from the straight segment. The cross-sectional area of the arc segment gradually increases along the extension direction from the straight segment to the arc segment.
[0017] Compared with existing technologies, the technical effects achieved by this solution are as follows: when dealing with the impact of water flow at low water levels, the straight section plays a major role, guiding the water flow to both sides; while at higher water levels, the curved section plays a major role, guiding the water flow to both sides and blocking some of the water flow from splashing upwards. The limiting groove restricts the bridge body and pier top supports, making the column structure more stable.
[0018] In one embodiment of this utility model, the first buffer surface and the second buffer surface are symmetrical about the cross section in the length direction of the bridge body, and there is an included angle between the first buffer surface and the second buffer surface.
[0019] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the first buffer surface and the second buffer surface with a certain angle constitute the front end of the buffer structure. When impacted by water flow, the water flows to both sides along the first buffer surface and the second buffer surface.
[0020] In one embodiment of this utility model, the arc-shaped surface further includes a rounded corner structure, and the first buffer surface and the second buffer surface are connected by the rounded corner structure; wherein, the rounded corner structure extends from the straight line segment to the arc-shaped segment.
[0021] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the rounded corner structure on the buffer structure can reduce the pressure brought by the water flow impacting the vase-shaped pier from other directions, reduce the water flow erosion of the vase-shaped pier, and at the same time, the rounded corner structure can also make the vase-shaped pier more aesthetically pleasing.
[0022] In one embodiment of this utility model, the vase-shaped support includes a stop block, which is located at the top of the arc-shaped segment and on the outside of the support at the top of the support.
[0023] Compared with existing technologies, the technical effects achieved by adopting this technical solution are: the stop block can effectively prevent the bridge body from moving laterally and protect the pier top support from external damage.
[0024] In one embodiment of this utility model, the buffer structure includes a first buffer structure and a second buffer structure; and the first buffer structure and the second buffer structure are arranged opposite to each other; the vase pier is also provided with a flow guide groove, which is located between the first buffer structure and the second buffer structure; wherein the flow guide groove is located at the end of the first buffer structure away from the arc-shaped surface.
[0025] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: after the water flows through the first buffer structure and the second buffer structure, it will pass through the guide channel in the guide channel. When the water flows through the guide channel, it will create small turbulence at the guide channel. The turbulence guides the water flow to flow close to the vase pier, thereby reducing the water flow resistance and mitigating the impact of the water flow on the vase pier.
[0026] In one embodiment of this utility model, a recess is provided on the top of the vase-shaped support, and the recess is located between multiple support bases on the top of the vase-shaped support; wherein, the guide channel extends from bottom to top to the recess.
[0027] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting a recess between the supports at the top of the pier, the weight of the vase pier is reduced without affecting the overall load-bearing capacity of the vase pier, making the vase pier more stable as a whole, and the design is more aesthetically pleasing.
[0028] On the other hand, an irregular steel cable-stayed bridge is also provided, which includes the column structure of any of the above.
[0029] By adopting the technical solution of this utility model, the following technical effects can be achieved:
[0030] (1) Buffer structures are provided on both sides of the vase-shaped pier. After the vase-shaped pier is impacted by water flow, the buffer structures can guide the water flow to both sides and reduce the impact force of water flow on the front of the vase-shaped pier.
[0031] (2) The blocks on the vase-shaped pier can restrict the lateral movement of the bridge body itself, and at the same time, the blocks can protect the pier top support and reduce external damage;
[0032] (3) The guide channel can generate turbulence, which guides the water flow close to the vase pier, reducing the water flow resistance and thus reducing the pressure on the vase pier;
[0033] (4) The curved surface of the vase-shaped pier can reduce the water flow resistance when the vase-shaped pier is impacted by the side water flow, so as to reduce the damage of the buffer structure to water flow erosion; at the same time, the curved surface and the vase-shaped pier can also improve the overall aesthetics of the column structure.
[0034] (5) By setting a recess between the supports at the top of the pier, the weight of the vase pier is reduced without affecting the overall load-bearing capacity of the vase pier, making the vase pier more stable and the design more aesthetically pleasing. Attached Figure Description
[0035] Figure 1 This is a first structural schematic diagram of a column structure according to an embodiment of the present utility model.
[0036] Figure 2 for Figure 1 A schematic diagram of the second structure of the central column structure;
[0037] Figure 3 for Figure 1 A schematic diagram of the third structure of the central column structure;
[0038] Figure 4 for Figure 3 A cross-sectional view of the central column structure along the AA direction.
[0039] Explanation of reference numerals in the attached figures:
[0040] 1. Column structure; 10. Vase-shaped pier; 11. Buffer structure; 11a. First buffer structure; 11b. Second buffer structure; 111. Straight section; 112. Arc section; 113. Buffer surface; 113a. First buffer surface; 113b. Second buffer surface; 114. Rounded corner structure; 12. Stop block; 13. Guide channel; 14. Recess; 15. Limiting groove; 20. Bridge body; 30. Pier top support; 40. Pier cap; 41. Cast-in-place pile. Detailed Implementation
[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0042] Example 1:
[0043] See Figures 1 to 4A column structure 1 for a non-standard steel cable-stayed bridge includes a bridge body 20, pier top supports 3, vase-shaped piers 10, and a foundation 40. The vase-shaped piers 10, acting as main piers, are positioned below the bridge body 20 and above the foundation 40 to support the bridge body 20. A limiting groove 15 for restricting the bridge body 20 and the pier top supports 30 is provided at the top of each vase-shaped pier 10. Two pier top supports 30 are spaced apart at the top of each vase-shaped pier 10, sandwiched between the vase-shaped pier 10 and the bridge body 20. When the bridge body 20 is under load or subjected to deformation pressure, the pressure is first transmitted to the pier top supports 30, and then from the pier top supports 30 to the vase-shaped piers 10. The foundation 40 is rectangular and positioned below the vase-shaped piers 10 to support them. Multiple cast-in-place piles 41 are provided under the foundation 40 to support the foundation 40. Buffer structures 11 are provided on both sides of the vase-shaped support 10. When water flows into the vase-shaped support 10, the buffer structures 11 guide and displace the water flow to reduce the pressure on the vase-shaped support 10 itself. The buffer structures 11 have arc-shaped surfaces. When the vase-shaped support 10 is impacted by water flow from the side, the arc-shaped surfaces can reduce water flow resistance and reduce the damage to the buffer structures 11 caused by water erosion.
[0044] Preferably, in this embodiment, the foundation 40 is constructed of C35 concrete, and nine cast-in-place piles 41 are arranged in an array below the foundation 40.
[0045] Preferably, two vase-shaped piers 10 are symmetrically arranged below the bridge body 20, and the connection between the bridge body 20 and the vase-shaped piers 10 is thicker than other parts to enhance the stress bearing capacity at the connection between the bridge body 20 and the pier top support 30. The cross-sectional dimensions of the vase-shaped piers 10 are 4.0m in the longitudinal direction of the bridge and 9.14 / 9.23~20.08m in the transverse direction. The pier body is made of C40 concrete and is constructed using a fixed steel formwork.
[0046] More specifically, the buffer structure 11 includes a straight segment 111 and an arc segment 112. The straight segment 111 is located below the vase-shaped pier 10, and the limiting groove 15 is formed at the end of the arc segment 112 away from the straight segment 111, restricting the lateral movement of the bridge body 20 and the pier top support 30. During low-level water flow impact, the straight segment 111 plays a major role in guiding and dispersing the water flow. The arc segment 112 is located above the vase-shaped pier 10 and connects to the straight segment 111. The cross-sectional area of the arc segment 112 increases from bottom to top, serving to support the bridge body 20. During high-level water flow impact, the arc segment 112 plays a major role in guiding and dispersing the water flow and blocking some of the water flow from splashing upwards.
[0047] Preferably, each buffer structure 11 has a buffer surface 113 including a first buffer surface 113a and a second buffer surface 113b. The first buffer surface 113a and the second buffer surface 113b are set as two sides of the buffer structure 11. The two buffer surfaces 113 are symmetrical about the cross-section of the bridge body 20 along its length, and there is an angle between the first buffer surface 113a and the second buffer surface 113b, which is between 45° and 90°. When water flows into the buffer structure 11, it flows to both sides along the first buffer surfaces 113a and 113b to reduce the pressure on the front of the vase-shaped pier 10.
[0048] Preferably, the buffer surface 113 is provided on both the straight section 111 and the arc section 112, so that when the height of the impact water flow is different, it can guide the water flow to both sides of the vase-shaped support 10. In the embodiment, the included angle between the two buffer surfaces 113 is preferably an acute angle of 60°, which can ensure that the buffer structure 11 has a good effect in guiding and dispersing the water flow, and can withstand sufficient pressure when the buffer structure 11 is impacted by the water flow from the side.
[0049] Preferably, the buffer structure 11 has a rounded corner structure 114, and the rounded corner structure 114 is symmetrical about the plane perpendicular to the long axis of the bridge body 20. The first buffer surface 113a and the second buffer surface 113b are connected by the rounded corner structure 114, and both the arc segment 112 and the straight segment 111 are provided with rounded corner structures 114. The symmetrically arranged rounded corner structures 114 can better balance the water flow impacting from multiple directions of the buffer structure 11, reduce the pressure on the buffer surface 113, and make the vase pier 10 more aesthetically pleasing.
[0050] Preferably, the vase-shaped pier 10 includes a stop block 12, which is located at the top of the arc-shaped segment 112. Each pier top support 30 has a stop block 12 on its outer side. The overall structure of the stop block 12 is similar to a tetrahedron, and the outer structure of the stop block 12 is consistent with the buffer structure 11. The stop block 12 can effectively prevent the bridge body 20 from moving laterally and protect the pier top support 30 from external damage.
[0051] Preferably, the vase-shaped support 10 is provided with a flow guide channel 13 and two buffer structures 11. The buffer structures 11 on the vase-shaped support 10 include a first buffer structure 11a and a second buffer structure 11b, which are arranged opposite to each other to cope with the impact of water flow from different directions. The flow guide channel 13 is located between the first buffer structure 11 and the second buffer structure 11. The flow guide channel 13 is located at the end of the first buffer structure 11a away from the arc-shaped surface. After the water flows through the first buffer structure 11a and the second buffer structure 11b, it will pass through the flow guide channel 13. When the water flows through the flow guide channel 13, a small turbulence will be generated at the flow guide channel 13. The turbulence guides the water flow close to the vase-shaped support 10, thereby reducing the water flow resistance and mitigating the impact of the water flow on the vase-shaped support 10.
[0052] Preferably, a recess 14 is provided on the top of the vase base 10, and the recess 14 is located between the two base supports 30 on the top of the vase base 10, with the guide channel 13 extending to the recess 14. The recess 14 reduces the weight of the vase base 10 without affecting its overall load-bearing capacity, making the vase base 10 more stable and aesthetically pleasing.
[0053] Example 2:
[0054] Example 2 provides an irregular steel cable-stayed bridge, which includes the column structure 1 provided in Example 1 above.
[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. A column structure for an irregularly shaped steel cable-stayed bridge, the column structure comprising: Bridge body (20); Multiple pier top supports (30), the pier top supports (30) are located below the bridge body (20) to support the bridge body (20); vase-shaped piers (10), the vase-shaped piers (10) are located below the pier top supports (30) to support the pier top supports (30), and the top of the vase-shaped piers (10) is provided with limiting grooves (15) for limiting the bridge body (20) and the pier top supports (30); a pier cap (40), the pier cap ( 40) Located below the vase pier (10) to support the vase pier (10); a plurality of cast-in-place piles (41) located below the foundation (40) to support the foundation (40), characterized in that: buffer structures (11) are provided on both sides of the vase pier (10), the buffer structures (11) are used to separate the water flow impacting the vase pier (10), and the buffer structures (11) have arc-shaped surfaces.
2. The column structure for an irregularly shaped steel cable-stayed bridge according to claim 1, characterized in that: The buffer structure (11) includes a straight segment (111) and an arc segment (112), the straight segment (111) and the arc segment (112) are connected, and the limiting groove (15) is formed at the end of the arc segment (112) away from the straight segment (111); In particular, along the extension direction from the straight line segment (111) to the arc segment (112), the cross-sectional area of the arc segment (112) gradually increases.
3. The column structure for an irregularly shaped steel cable-stayed bridge according to claim 2, characterized in that: The arc-shaped surface includes a first buffer surface (113a) and a second buffer surface (113b). The first buffer surface (113a) and the second buffer surface (113b) are symmetrical about the cross section of the bridge body (20) in the length direction, and there is an included angle between the first buffer surface (113a) and the second buffer surface (113b).
4. The column structure for an irregularly shaped steel cable-stayed bridge according to claim 3, characterized in that: The arc-shaped surface also includes a rounded corner structure (114), and the first buffer surface (113a) and the second buffer surface (113b) are connected by the rounded corner structure (114); The rounded corner structure (114) extends from the straight line segment (111) to the arc segment (112).
5. The column structure for an irregularly shaped steel cable-stayed bridge according to claim 2, characterized in that: The vase-shaped support (10) includes a stop block (12), which is located at the top of the arc-shaped segment (112) and outside the support (30) on the top of the support.
6. The column structure for an irregularly shaped steel cable-stayed bridge according to claim 1, characterized in that: The buffer structure (11) includes a first buffer structure (11a) and a second buffer structure (11b), which are arranged opposite to each other. The vase base (10) is also provided with a flow guide groove (13), which is located between the first buffer structure (11a) and the second buffer structure (11b); The guide groove (13) is located on the first buffer structure (11a) at one end away from the arc-shaped surface.
7. The column structure for an irregularly shaped steel cable-stayed bridge according to claim 6, characterized in that: The top of the vase base (10) is provided with a recess (14), which is located between a plurality of the base supports (30) on the top of the vase base (10). The guide groove (13) extends from bottom to top to the recess (14).
8. A type of irregularly shaped steel cable-stayed bridge, characterized in that: The irregular steel cable-stayed bridge includes the column structure as described in any one of claims 1 to 7.