A rubber dam diversion type energy dissipation structure

Abstract

A diversion-type energy dissipation structure for a rubber dam, belonging to the field of hydraulic engineering structures, includes at least one central pier and multiple toe piers. The central pier is located on the dam bag. A guide wall is connected downstream of the central pier, situated on the slope section of the stilling basin. Multiple toe piers are located downstream of the dam bag, also situated on the slope section of the stilling basin. The height of the toe piers is lower than the height of the guide wall. This invention, by employing the above structure, effectively reduces the length of the wind zone downstream of the rubber dam by setting multiple guide walls and toe piers, adjusting the flow direction and flow pattern of the water downstream of the dam, reducing unfavorable deflecting flows, and minimizing the impact of wind, waves, and river morphology on the dam bag. This effectively reduces the length of the wind zone downstream of the rubber dam, solves the problem of dam bag swaying, and improves the overall stability and durability of the rubber dam structure.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic engineering structures, specifically referring to a rubber dam diversion type energy dissipation structure. Background Technology

[0002] Rubber dams are unidirectional water-retaining structures. When the water level difference between the upstream and downstream is small and the downstream water depth is large, the water flow downstream of the dam will generate deflecting flow on both wing walls due to the influence of wind, waves and river morphology, causing the dam bag to sway, which in turn affects the safety of the dam body and threatens the overall safety of the hydraulic structure. Utility Model Content

[0003] The purpose of this invention is to provide a flow-diverting energy dissipation structure for rubber dams, which effectively reduces the length of the wind zone, reduces the impact of wind waves and river conditions on the dam bag, reduces dam bag swaying, and improves dam bag stability.

[0004] To address the aforementioned issues, a rubber dam diversion energy dissipation structure with simple structure, reliable technology, high durability, convenient construction, and good landscape effect has been invented, which can effectively solve the dam bag stability problem.

[0005] The technical solution adopted is:

[0006] A rubber dam diversion-type energy dissipation structure includes at least one central pier and multiple toe piers. Its characteristics are:

[0007] A central pier is set on the dam bag.

[0008] Downstream of the central pier, a guide wall is connected, which is located on the slope section of the stilling basin.

[0009] Multiple toe piers are installed downstream of the dam bag, and the toe piers are located on the slope section of the stilling basin.

[0010] The height of the toe pier is lower than the height of the guide wall.

[0011] Its advantages are:

[0012] By adopting the above-mentioned structure, this utility model sets up multiple guide walls and toe piers downstream of the rubber dam, which effectively reduces the length of the wind zone, adjusts the flow direction and flow pattern of the water downstream of the dam, reduces unfavorable deflecting water flow, reduces the impact of wind waves and river morphology on the dam bag, effectively reduces the length of the wind zone downstream of the rubber dam, solves the problem of dam bag swaying, and improves the stability and durability of the overall structure of the rubber dam. Attached Figure Description

[0013] Figure 1 This is a structural plan of a rubber dam diversion energy dissipation structure.

[0014] Figure 2 yes Figure 1 Cross-sectional view at point AA.

[0015] Figure 3 yes Figure 1 Cross-sectional view at point BB.

[0016] Figure 4 yes Figure 1 A magnified view of the lower middle section.

[0017] In the diagram: 1. Guide wall, 2. Toe pier, 3. Middle pier, 4. Wing wall, 5. Stilling basin, 6. Rubber dam base plate, 7. Dam bag. Detailed Implementation

[0018] A rubber dam diversion energy dissipation structure includes at least one central pier 3 and multiple toe piers 2.

[0019] The dam bag 7 is set on the rubber dam base plate 6, and there are wing walls 4 on both sides of the dam bag 7 set on the rubber dam base plate 6.

[0020] Multiple central piers 3 are set on the dam bag 7.

[0021] Each of the middle piers 3 is connected to a guide wall 1 downstream, which is located on the slope section of the stilling basin 5. The number of guide walls 1 is the same as the number of middle piers 3.

[0022] Multiple toe piers 2 are set downstream of the dam bag 7, and the toe piers 2 are located on the slope section of the stilling basin 5.

[0023] Specifically, multiple toe blocks 2 are set between the guide walls 1 and between the guide walls 1 and the edge wing walls 4.

[0024] Furthermore, the height of the toe pier 2 is lower than the height of the guide wall 1.

[0025] In this embodiment, the guide wall 1 is a reinforced concrete structure with a length of 500cm and a width of 80cm. The width of the guide wall 1 is the same as that of the middle pier 3. The upstream pier head of the guide wall 1 is smoothly connected to the downstream pier head of the middle pier 3. The shape of the upstream pier head of the guide wall 1 is complementary to the concave and convex shape of the downstream pier head of the middle pier. For example, the upstream pier head of the guide wall 1 has a protrusion, and the downstream pier head of the middle pier 3 has a depression. The downstream pier head of the guide wall 1 can be semi-circular or streamlined.

[0026] The guide wall 1 is 200cm higher than the bottom slab 6 of the rubber dam. The downstream abutment of the guide wall 1 is semi-circular and is 300cm higher than the bottom slab of the stilling basin 5. The guide wall 1 is anchored to the sloping section of the stilling basin 5 and extends 100cm into the horizontal section of the stilling basin 5.

[0027] Toe pier 2 is a reinforced concrete structure located between guide wall 1 and wing wall 4. Multiple toe piers 2 are arranged at equal intervals, with a width of 60cm, a center-to-center spacing of 500cm, and a net distance of 470cm. The upstream abutment of toe pier 2 is semi-circular, extending 30cm above the bottom slab 6 of the rubber dam. The downstream abutment of toe pier 2 is semi-circular, extending 130cm above the bottom slab of the stilling basin 5. Toe pier 2 is anchored to the slope section of the stilling basin 5, or both the upstream and downstream abutments of toe pier 2 are streamlined.

[0028] Specifically, the reinforced concrete diversion wall 1 is 500cm long, 80cm wide, and 200-300cm high.

[0029] The reinforced concrete toe pier 2 is 400cm long, 30cm wide, and 30-130cm high.

[0030] The height of the central pier 3 is 450cm, the length is 800cm, and the width is 80cm.

[0031] The aforementioned guide wall 1 is a reinforced concrete structure with a concrete strength grade of not less than C25 and a steel reinforcement grade of III.

[0032] The reinforced concrete structure of the toe pier 2 has a concrete strength grade of not less than C25 and a steel reinforcement grade of [missing information].

[0033] Level III.

[0034] Streamlined shapes can be chosen from various conventional shapes that facilitate the flow of water downstream.

[0035] All other parts not described in detail are existing technology.

Claims

1. A rubber dam diversion type energy dissipation structure, comprising at least one central pier (3) and multiple toe piers (2); characterized in that: A central pier (3) is set on the dam bag (7); Downstream of the central pier (3), a guide wall (1) is connected, and the guide wall (1) is located on the slope section of the stilling basin (5); Multiple toe piers (2) are set downstream of the dam bag (7), and the toe piers (2) are located on the slope section of the stilling basin (5).

2. The rubber dam diversion type energy dissipation structure according to claim 1, characterized in that: The height of the toe pier (2) is lower than the height of the guide wall (1).

3. The rubber dam diversion type energy dissipation structure according to claim 1, characterized in that: The upstream pier of the guide wall (1) is smoothly connected to the downstream pier of the middle pier (3).

4. The rubber dam diversion type energy dissipation structure according to claim 3, characterized in that: The shape of the upstream pier of the guide wall (1) is complementary to the concave and convex shape of the downstream pier of the middle pier (3).

5. The rubber dam diversion type energy dissipation structure according to claim 1, characterized in that: The downstream pier of the guide wall (1) is semi-circular or streamlined.

6. The rubber dam diversion type energy dissipation structure according to claim 1, characterized in that: The upstream and downstream heads of the toe pier (2) are semi-circular or streamlined.

7. The rubber dam diversion type energy dissipation structure according to claim 1, characterized in that: The width of the central pier (3) is 80cm.

8. The rubber dam diversion type energy dissipation structure according to claim 1, characterized in that: The guide wall (1) is a reinforced concrete structure with a length of 500cm and a width of 80cm; The guide wall (1) is 200cm higher than the bottom plate (6) of the rubber dam; the downstream pier of the guide wall (1) is 300cm higher than the bottom plate of the stilling basin (5); the guide wall (1) extends 100cm into the horizontal section of the stilling basin (5).

9. A rubber dam diversion-type energy dissipation structure according to claim 1, characterized in that: The toe pier (2) is a reinforced concrete structure. Multiple toe piers (2) are arranged at equal intervals. The length of the toe pier (2) is 400cm and the width is 60cm. The net distance between the toe piers (2) is 470cm. The upstream pier head of the toe pier (2) is 30cm higher than the bottom plate (6) of the rubber dam. The downstream pier head of the toe pier (2) is 130cm higher than the bottom plate of the stilling basin (5).

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