Concrete apron structure with roughened energy dissipation beams and high deformation adaptability
By combining concrete slabs, bidirectional steel mesh, and reinforced concrete energy dissipation beams, the problems of poor energy dissipation and scour prevention effect of concrete aqueducts and weak adaptability to riverbed deformation are solved. Effective energy dissipation and structural stability are achieved, adapting to riverbed deformation and temperature changes. The construction is simple, economical, and environmentally friendly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI SURVEY & DESIGN INST OF WATER CONSERVANCY & HYDROPOWER
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-24
AI Technical Summary
Existing concrete aqueduct structures have poor energy dissipation and erosion protection effects, weak adaptability to riverbed deformation, and are prone to cracking.
The structure employs a combination of concrete slabs, bidirectional steel mesh, and reinforced concrete energy-dissipating beams. The concrete slabs are arranged and set in sections, combined with rigid design, steel mesh, and reinforced concrete energy-dissipating beams to enhance the structure's ability to adapt to deformation. The rigid design of the connection between the concrete slabs further strengthens the structure's adaptability and stability.
It effectively dissipates the residual energy after the stilling basin, protects the safety of the riverbed and upstream structures, shortens the length of the river, saves engineering investment, enhances the overall stability of the structure, adapts to riverbed deformation and temperature changes, and is simple to construct, environmentally friendly and economical.
Smart Images
Figure CN224161045U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy dissipation and scour prevention technology of hydraulic structures, specifically to a concrete seawall structure with a roughened energy dissipation beam that has strong adaptability to deformation. Background Technology
[0002] In low-head hydraulic structures such as sluice gates and pumping stations, bottom flow energy dissipation is often employed. However, the flow velocity at the bottom of the stilling basin remains high, resulting in significant turbulence and a strong scouring effect on the riverbed. Therefore, a sheave of a certain length is necessary downstream of the stilling basin to dissipate the remaining energy, regulate the flow to achieve a uniform velocity distribution, and protect the riverbed from scouring. The sheave must possess certain surface roughness, deformation adaptability, permeability, and scour resistance. A rough surface effectively dissipates the remaining energy of the flow at the end of the stilling basin; deformation adaptability ensures the sheave can accommodate riverbed deformation without damage; permeability eliminates bottom seepage forces, meeting anti-buoyancy stability requirements; and strong scour resistance is essential for effectively protecting the riverbed and upstream hydraulic structures.
[0003] Traditional riverbank revetments primarily utilize masonry structures. However, obtaining stones with the required erosion resistance size is difficult, and the cost is high. Furthermore, a shortage of skilled masonry installers leads to slow construction speeds, resulting in the decreasing use of masonry and gabion revetments in recent years. Currently, most riverbank revetments employ plain concrete structures. However, common plain concrete revetments have relatively low surface roughness, resulting in poor energy dissipation and erosion control. To ensure the safety of the riverbed and upstream hydraulic structures, concrete revetments require long layouts, which is uneconomical. Moreover, plain concrete revetments have poor adaptability to riverbed deformation and are prone to deformation and cracking due to temperature differences and concrete drying shrinkage. Based on current societal development requirements, to effectively improve the energy dissipation effect of concrete revetments, reduce the amount of revetment work, adapt to riverbed and temperature-induced deformation, and enhance the overall stability of the revetment, improvements to existing concrete revetment structures are necessary. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a concrete aqueduct structure with a roughened energy dissipation beam that has strong adaptability to deformation, thus solving the problems of poor energy dissipation and scour prevention effect, poor adaptability to riverbed deformation, and susceptibility to deformation and cracking in aqueducts.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A concrete aqueduct structure with a roughened energy dissipation beam that has strong adaptability to deformation, the concrete aqueduct structure comprising: concrete slabs, a two-way steel mesh and a roughened concrete energy dissipation beam;
[0007] When the concrete seawall structure is not significantly scoured by the water flow, it is arranged horizontally. When the scour is significant, it is arranged inclined downstream or in a combination of horizontal and inclined arrangement, with an inclination slope m not steeper than 1:10.
[0008] The segment length L of the concrete slab is 4.0m~5.0m, and a two-way steel mesh is laid on the top surface of the concrete slab; a concrete roughening energy dissipation beam is set on the surface of the concrete slab.
[0009] Preferably, the roughened concrete energy dissipation beams are arranged at intervals along the water flow direction and continuously perpendicular to the water flow direction, with the width b1 of the roughened concrete energy dissipation beams being 0.5m~0.8m and the height h1 being 0.1m~0.2m.
[0010] Preferably, the roughened concrete energy dissipation beam is provided with roughened energy dissipation beam reinforcement, the concrete cover thickness of the roughened energy dissipation beam reinforcement is 30mm, the roughened energy dissipation beam reinforcement is HRB400 steel bar, the diameter of the roughened energy dissipation beam reinforcement is 8mm~10mm, the spacing is 0.2m, and the U-shaped steel bars in the roughened energy dissipation beam reinforcement are inserted into the concrete slab for 0.15m.
[0011] Preferably, the thickness h of the concrete slab is 0.2m to 0.3m, and a permanent joint is provided between adjacent concrete slabs. The width of the permanent joint is 0.02m, and the joint is filled with polyethylene closed-cell board.
[0012] Preferably, the bidirectional steel mesh is laid on the top layer of the concrete slab, the concrete protective layer of the bidirectional steel mesh is 30mm thick, the bidirectional steel mesh uses HRB400 steel bars, the diameter of the steel bars in the bidirectional steel mesh is 8mm~12mm, and the spacing is 0.2m.
[0013] Preferably, a concrete toothed wall is provided at the bottom of the concrete slab. The concrete toothed wall is arranged continuously with two concrete slabs spaced along the direction of water flow and perpendicular to the direction of water flow. The width b2 of the concrete toothed wall is 0.4m~0.5m and the height h2 is 0.6m~0.8m.
[0014] Preferably, a crushed stone cushion layer is arranged under the concrete slab, the crushed stone cushion layer is 0.1m thick, and the crushed stone particle size is 5mm~16mm.
[0015] This invention provides a concrete aqueduct structure with a roughened energy-dissipating beam, exhibiting strong adaptability to deformation. Compared with existing technologies, it possesses the following advantages:
[0016] In this invention, the concrete aqueduct structure utilizes a roughened energy-dissipating beam to effectively dissipate residual energy behind the stilling basin, protecting the riverbed from erosion and ensuring the safety of upstream structures. It also shortens the length of the aqueduct, saving on project investment and ensuring safety and economy. The use of a bidirectional small-diameter steel mesh on the concrete surface and appropriate block sizes solves the problem of concrete cracking and damage caused by riverbed deformation, temperature differences, and concrete shrinkage. It also maintains a certain degree of integrity, and the permeability of water through the gaps between adjacent blocks increases the overall stability of the concrete aqueduct structure. The concrete aqueduct has reasonable block sizes, simple construction, saves construction time, meets the needs of social development, and is environmentally friendly and economical. Attached Figure Description
[0017] 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 drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a plan view of the concrete seawall structure in an embodiment of this utility model.
[0019] Figure 2 for Figure 1 Cross-sectional view of AA.
[0020] Figure 3 for Figure 2 Enlarged view of point B in the middle.
[0021] The reference numerals in the figure are set as follows: 1. Concrete slab; 2. Two-way steel mesh; 3. Roughened concrete energy dissipation beam; 4. Permanent joint; 5. Roughened energy dissipation beam reinforcement; 6. Concrete toothed wall; 7. Crushed stone cushion layer. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] This application provides a concrete aqueduct structure with a roughened energy dissipation beam that has strong adaptability to deformation, thus solving the problems of poor energy dissipation and scour prevention effect, poor adaptability to riverbed deformation, and easy deformation and cracking of aqueduct.
[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0025] Example 1:
[0026] like Figures 1-3 As shown, this utility model provides a concrete aqueduct structure with a roughened energy dissipation beam that has strong adaptability to deformation. The concrete aqueduct structure includes: concrete slabs 1, bidirectional steel mesh 2, roughened concrete energy dissipation beam 3, permanent joint 4, roughened energy dissipation beam reinforcement 5, concrete toothed wall 6, and crushed stone cushion layer 7.
[0027] The concrete seawall structure is arranged horizontally when the scouring is not significant and inclined downstream when the scouring is significant, or a combination of horizontal and inclined arrangement. The inclination slope m is not steeper than 1:10, and the concrete strength grade is not less than C25.
[0028] To prevent and reduce deformation cracks caused by uneven settlement of soft foundation and temperature changes, the segment length L of concrete slab 1 is 4.0m~5.0m, and a two-way steel mesh 2 is laid on the top surface of concrete slab 1. To improve the energy dissipation effect, a roughened concrete energy dissipation beam 3 is set on the surface of concrete slab 1.
[0029] The thickness h of the concrete slab 1 is 0.2m~0.3m. A permanent joint 4 is provided between adjacent concrete slabs 1. The width of the permanent joint 4 is 0.02m, and the joint is filled with polyethylene closed-cell board.
[0030] The bidirectional steel mesh 2 is laid bidirectionally on the top layer of the concrete slab 1. The concrete protective layer of the bidirectional steel mesh 2 is 30mm thick. The bidirectional steel mesh 2 uses HRB400 steel bars with a diameter of 8mm~12mm and a spacing of 0.2m.
[0031] The reinforced concrete energy dissipation beams 3 are arranged at 5.0m intervals along the water flow direction and continuously perpendicular to the water flow direction. The width b1 of the reinforced concrete energy dissipation beams 3 is 0.5m~0.8m and the height h1 is 0.1m~0.2m.
[0032] To improve the impact resistance, stability, and durability of the roughened concrete energy dissipation beam 3, roughened energy dissipation beam reinforcement 5 is installed inside the beam. The concrete cover thickness of the roughened energy dissipation beam reinforcement 5 is 30mm. The roughened energy dissipation beam reinforcement 5 uses HRB400 steel bars with a diameter of 8mm~10mm and a spacing of 0.2m. The U-shaped steel bars in the roughened energy dissipation beam reinforcement 5 are inserted into the concrete slab 1 by 0.15m.
[0033] The concrete toothed wall 6 is arranged with two concrete slabs 1 spaced apart in the direction of water flow and continuously perpendicular to the direction of water flow to improve the overall anti-slip stability of the concrete seawall structure. The width b2 of the concrete toothed wall 6 is 0.4m~0.5m and the height h2 is 0.6m~0.8m.
[0034] The crushed stone cushion layer 7 is arranged under the concrete slab 1, with a thickness of 0.1m and a crushed stone particle size of 5mm~16mm.
[0035] Example 2:
[0036] The designed flood discharge capacity of a certain river control gate is 1475 m³. 3The stilling basin is a flat-bottomed, breast-walled gate with 14 openings, each with a net width of 8.0m and a total net width of 112.0m. The gate sill elevation is 3.0m, and the upstream and downstream channel bottom elevations are 3.0m and 2.0m, respectively. For energy dissipation and scour prevention, the upstream water level is 8.5m, and the downstream water level is 3.5m. The downstream stilling basin is connected to a combined horizontal and inclined concrete apron, with a horizontal section of 10m and an inclined section of 40.0m, with an inclination slope of 1:15. A reinforced concrete energy dissipation beam is installed on the apron, and a two-way steel mesh is laid on the surface. After completion and commissioning, no cracks appeared in the structure, the energy dissipation effect was good, no significant scour damage occurred in the downstream riverbed, and the upstream hydraulic structures operated safely.
[0037] See Figure 1 and Figure 2 A concrete seawall structure with a roughened energy dissipation beam and strong adaptability to deformation includes: concrete slabs 1, two-way steel mesh 2, roughened concrete energy dissipation beam 3, permanent joint 4, roughened energy dissipation beam reinforcement 5, concrete toothed wall 6, and crushed stone cushion layer 7.
[0038] See Figure 1 The concrete seawall structure is arranged in a combination of horizontal and downstream sloping sections. The horizontal section is 10.0m long, the sloping section is 40.0m long, the slope m is 1:15, the concrete strength grade is C25, the segment length L of concrete slab 1 is 5.0m, and a permanent joint 4 is provided between adjacent sections. The joint width is 0.02m, and the joint is filled with polyethylene closed-cell board.
[0039] See Figure 2 The concrete slab 1 is 0.3m thick, and a two-way steel mesh 2 is laid on its top surface. The concrete cover of the two-way steel mesh 2 is 30mm thick. The two-way steel mesh 2 uses HRB400 steel bars with a diameter of 12mm and a spacing of 0.2m.
[0040] See Figure 1 and 2 A roughened concrete energy dissipation beam 3 is installed on the surface of the concrete slab 1. The roughened concrete energy dissipation beam 3 is arranged at intervals of 5.0m along the water flow direction and continuously perpendicular to the water flow direction, with a width b1 of 0.8m and a height h1 of 0.15m.
[0041] See Figure 3 Reinforcing bars 5 are installed inside the concrete roughened energy dissipation beam 3. The concrete cover thickness of reinforcing bars 5 is 30mm. Reinforcing bars 5 are HRB400 steel bars with a diameter of 10mm and a spacing of 0.2m. The U-shaped steel bars in reinforcing bars 5 are inserted into the concrete slab 1 by 0.15m.
[0042] See Figure 1 and Figure 2 The concrete toothed wall 6 is arranged with two concrete slabs 1 spaced apart in the direction of water flow and continuously perpendicular to the direction of water flow. The width b2 of the concrete toothed wall 6 is 0.4m and the height h2 is 0.6m.
[0043] See Figure 2 The crushed stone cushion layer 7 is arranged under the concrete slab 1, with a thickness of 0.1m and a crushed stone particle size of 5mm~16mm.
[0044] Thus, in this embodiment, the roughened energy dissipation beam 3 on the concrete seawall can effectively dissipate the residual energy after the stilling basin, protect the riverbed from scouring and ensure the safety of upstream structures, and shorten the seawall length, saving project investment. By utilizing the bidirectional small-diameter steel mesh 2 on the surface layer of the concrete slab 1 and the appropriate block size L, the problem of concrete cracking and damage caused by riverbed deformation, temperature difference and concrete shrinkage is solved. It also has a certain degree of integrity, increases the overall stability of the structure, is simple to construct, meets the needs of social development, and is environmentally friendly and economical.
[0045] In summary, compared with the prior art, the present invention has the following beneficial effects:
[0046] 1. In this utility model, the roughened energy dissipation beam on the concrete aqueduct structure can effectively dissipate the residual energy behind the stilling basin, protect the riverbed from scouring and ensure the safety of upstream structures, shorten the length of the aqueduct, save on engineering investment, and is safe and economical.
[0047] 2. In this utility model, by utilizing the bidirectional small-diameter steel mesh of the concrete surface layer and the appropriate block size, the problem of concrete cracking and damage caused by riverbed deformation, temperature difference and concrete shrinkage in concrete aqueduct structures is solved. It also has a certain degree of integrity. Water permeability through the gaps between adjacent blocks increases the overall stability of the concrete aqueduct structure.
[0048] 3. In this utility model, the concrete seawall is divided into blocks with reasonable dimensions, simple construction, and saves construction time, which meets the needs of social development and is environmentally friendly and economical.
[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A concrete aquifer structure with a roughened energy dissipation beam, characterized in that, The concrete aqueduct structure includes: concrete slabs (1), two-way steel mesh (2), and concrete roughened energy dissipation beams (3); When the concrete seawall structure is not significantly scoured by the water flow, it is arranged horizontally. When the scour is significant, it is arranged inclined downstream or in a combination of horizontal and inclined arrangement, with an inclination slope m not steeper than 1:
10. The segment length L of the concrete slab (1) is 4.0m~5.0m, and a two-way steel mesh (2) is laid on the top surface of the concrete slab (1); a concrete roughened energy dissipation beam (3) is set on the surface of the concrete slab (1).
2. The concrete aqueduct structure with a roughened energy-dissipating beam and strong adaptability to deformation as described in claim 1, characterized in that, The concrete roughened energy dissipation beam (3) is arranged at intervals along the water flow direction and continuously perpendicular to the water flow direction. The width b1 of the concrete roughened energy dissipation beam (3) is 0.5m~0.8m and the height h1 is 0.1m~0.2m.
3. The concrete aqueduct structure with a roughened energy-dissipating beam and strong adaptability to deformation as described in claim 2, characterized in that, The concrete roughened energy dissipation beam (3) is provided with roughened energy dissipation beam reinforcement (5). The concrete cover thickness of the roughened energy dissipation beam reinforcement (5) is 30mm. The roughened energy dissipation beam reinforcement (5) uses HRB400 steel bars. The diameter of the steel bars of the roughened energy dissipation beam reinforcement (5) is 8mm~10mm and the spacing is 0.2m. The U-shaped steel bars in the roughened energy dissipation beam reinforcement (5) are inserted into the concrete slab (1) for 0.15m.
4. The concrete aqueduct structure with a roughened energy-dissipating beam and strong adaptability to deformation as described in claim 1, characterized in that, The thickness h of the concrete slab (1) is 0.2m~0.3m. A permanent joint (4) is provided between adjacent concrete slabs (1). The width of the permanent joint (4) is 0.02m, and the joint is filled with polyethylene closed-cell board.
5. The concrete aqueduct structure with a roughened energy-dissipating beam and strong adaptability to deformation as described in claim 1, characterized in that, The bidirectional steel mesh (2) is laid on the top layer of the concrete slab (1). The concrete protective layer of the bidirectional steel mesh (2) is 30mm thick. The bidirectional steel mesh (2) uses HRB400 steel bars. The diameter of the steel bars in the bidirectional steel mesh (2) is 8mm~12mm and the spacing is 0.2m.
6. The concrete aqueduct structure with a roughened energy-dissipating beam and strong adaptability to deformation as described in claim 1, characterized in that, The bottom of the concrete slab (1) is provided with a concrete toothed wall (6). The concrete toothed wall (6) is arranged in a continuous manner perpendicular to the water flow direction, with a spacing of 2 concrete slabs (1) in the direction of water flow. The width b2 of the concrete toothed wall (6) is 0.4m~0.5m and the height h2 is 0.6m~0.8m.
7. The concrete seawall structure with a roughened energy-dissipating beam as described in claim 1, characterized in that, A crushed stone cushion layer (7) is arranged under the concrete slab (1). The crushed stone cushion layer (7) is 0.1m thick and the crushed stone particle size is 5mm~16mm.