Steel plate lining protection structure of sand flushing flood discharge gate
By installing steel plate panels, stiffening ribs, and anchor bars on the bottom slab and side walls of the flood discharge gate, and then pouring concrete to form a solidified body, the problem of easy damage to steel lining was solved, and the high durability and impact resistance of steel plate lining were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-20
AI Technical Summary
The steel lining structure of existing sand flushing and flood discharge gates is easily damaged under high water flow and bedload action, leading to frequent maintenance and affecting the safety and power generation efficiency of water conservancy and hydropower projects.
Steel plates are installed on the bottom slab and side walls of the flood discharge gate chamber. Combined with transverse and longitudinal stiffening ribs and anchor bars, concrete is poured to form a solidified body, which enhances the fixation and impact and wear resistance of the steel plates.
It significantly improves the impact and wear resistance of steel plate lining, extends its service life, reduces maintenance frequency and costs, and ensures the safety and benefits of water conservancy and hydropower projects.
Smart Images
Figure CN224016266U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of water conservancy and hydropower engineering, in particular to a steel plate lining structure of a sand flushing flood discharge gate. BACKGROUND
[0002] Water energy resources are rich in the western region of China, and rivers are mainly mountainous rivers, and adverse geological phenomena such as landslides and collapses often occur on both sides of the river, and solid runoff sources are relatively rich, and debris flow gully is the main source of bed load supply. The river bed slope of the mountainous river is large, and under the action of rainfall in the flood season, a large amount of bed load enters the river channel, and part of the bed load has a large particle size, and the bed load mostly advances in the form of rolling or jumping motion in the water flow, resulting in wear and impact damage of the water conservancy and hydropower engineering discharge building. Wear and impact damage is one of the common problems of the discharge building, and is also an important factor affecting the durability of the discharge building, especially when the water flow velocity is high, and the water flow carries sand and other bed load, the damage phenomenon is more serious, and the operation safety is affected.
[0003] The steel lining (steel plate lining) is arranged on the concrete surface of the gate chamber bottom plate of the sand flushing flood discharge gate, which is a common erosion-resistant measure. At present, the steel lining is formed by splicing a plurality of rectangular steel plates, and the area of each steel plate is 4m 2 Hereinafter, the thickness of the steel plate is 12-16mm, and each steel plate is welded on the angle steel embedded in the sand flushing flood discharge gate chamber bottom plate. The steel lining is formed by splicing a plurality of steel plates, and only the four edges of each steel plate are welded with the angle steel, the fixing effect of the steel plate is not enough, and in addition, the strength of the steel plate is insufficient, the sand flushing flood discharge gate of a plurality of gate dams has appeared the phenomenon of damaged steel lining in actual operation, and the steel lining needs to be repaired after the flood season by building cofferdams, which is in the state of "year after year, year after year, year after year, year after year", the maintenance cost is high, not only affects the power generation benefit, but also affects the safety of the water conservancy and hydropower engineering. UTILITY MODEL CONTENTS
[0004] The utility model provides a kind of steel plate lining structure of sand flushing flood discharge gate, purpose is to improve the erosion resistance of steel plate lining, prolong the durability of steel plate lining.
[0005] The utility model discloses a technical scheme is: the steel plate lining structure of sand flushing flood discharge gate, including the bottom plate of lock chamber and the panel of top thereof, the bottom plate of lock chamber is reinforced concrete structure, and the panel is steel plate, and the bottom surface of panel is fixed with horizontal stiffener and longitudinal stiffener, horizontal stiffener and longitudinal stiffener are all interval arrangement, and horizontal stiffener and longitudinal stiffener all are strip board -like, and the plane corresponding to horizontal stiffener and longitudinal stiffener is all vertical to the plane corresponding to panel, and the plane corresponding to longitudinal stiffener is consistent with the water flow direction, and the plane corresponding to horizontal stiffener is perpendicular to the water flow direction, the bottom of panel still is fixed with first anchor bar, and first anchor bar is interval arrangement, and the upper end of first anchor bar is fixed in at least one of panel, horizontal stiffener and longitudinal stiffener, and the lower end of first anchor bar is placed in the bottom plate of lock chamber, the panel still is equipped with grouting hole, and the solidified body formed by pouring concrete between panel and the bottom plate of lock chamber.
[0006] After pouring concrete between panel and the bottom plate of lock chamber, in order to facilitate the flow of concrete, to ensure the pouring quality, further: horizontal stiffener and / or longitudinal stiffener are provided with stringing holes.
[0007] In order to facilitate the flow of concrete and exhaust, further: the corner surrounded by panel, horizontal stiffener and longitudinal stiffener is provided with stringing holes.
[0008] After pouring concrete between panel and the bottom plate of lock chamber, in order to facilitate the vibration of concrete, further: panel is also provided with vibrating holes.
[0009] In order to improve the durability of the pier of sand flushing flood discharge gate, further: the steel plate lining structure of sand flushing flood discharge gate further comprises a pier, and the side wall of the pier is fixed with a side plate, the side plate is a steel plate, one side of the side plate facing the pier is fixed with a second anchor bar, and the second anchor bar is anchored in the pier.
[0010] In order to improve the fixing effect of the side plate, further: the lower part of the side plate is poured into the solidified body between the panel and the bottom plate of lock chamber, one side of the side plate facing the lock chamber is welded and connected with the panel, one end of the second anchor bar is provided with a right-angle elbow and is welded and connected with the side plate, and the other end of the second anchor bar is provided with a hook.
[0011] In order to stably connect the upper end of the first anchor bar with the panel, specifically: the upper end of the first anchor bar is bent into a right angle and is welded and connected at the internal corner formed by the panel and the horizontal stiffener, or is welded and connected at the internal corner formed by the panel and the longitudinal stiffener.
[0012] In order to improve the anchoring effect of the first anchor bar in the solidified body, further: the lower end of the first anchor bar is provided with a hook, and each hook is placed on the bottom plate of lock chamber.
[0013] In order to better fix the panel by the first anchor bar, further: the plane corresponding to the first anchor bar is consistent with the water flow direction.
[0014] Specifically, the panel and the side plate are both made of Q355D material, the thickness of the panel is 30mm, the thickness of the side plate is 20mm, the first anchor and the second anchor are both HPB235 bright round steel, the diameter of the bright round steel is 28mm, the pier, the bottom plate of the gate chamber and the solidified body between the panel and the bottom plate of the gate chamber are all self-compacting concrete.
[0015] The utility model discloses the beneficial effects are: the top of gate chamber bottom plate adopts steel sheet as panel, and the size of panel does not affect its stability, therefore the size of panel can be enough big, and the panel on the top of gate chamber bottom plate can be a whole piece, and the integrity of panel is improved obviously. The bottom of panel is reinforced through horizontal stiffening rib and longitudinal stiffening rib, and the strength of panel is improved. The panel is anchored through the first anchor, and the first anchor is arranged at the bottom of panel, fixes the panel in multiple points, and the first anchor is anchored in the solidified body between the panel and the bottom plate of gate chamber, and the fixing effect of panel is good. The utility model improves the anti-impact wear resistance and durability of panel, and the panel can resist the impact and wear damage of push material for a long time, and then the service life of panel is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a plane arrangement schematic diagram of one embodiment of the steel plate lining structure of the sand flushing flood discharge gate.
[0017] Figure 2 It is Figure 1 The sectional view along A-A.
[0018] Figure 3 It is Figure 2 The detailed view between the gate chamber bottom plate and the panel.
[0019] Figure 4 It is Figure 1 The sectional view along B-B.
[0020] Mark: gate chamber bottom plate 1, panel 2, horizontal stiffening rib 3, longitudinal stiffening rib 4, first anchor 5, grouting hole 6, stringing hole 7, solidified body 8, pier 9, side plate 10, second anchor 11, vibrating hole 12, gate slot structure 13. DETAILED DESCRIPTION
[0021] The utility model will be further explained in connection with the drawings.
[0022] As Figures 1 to 4As shown, the steel plate lining structure of the sand flushing and flood discharge gate of this utility model includes a gate chamber bottom plate 1 and a top panel 2. The gate chamber bottom plate 1 is a reinforced concrete structure, and the panel 2 is a steel plate. The gate chamber bottom plate 1 is preferably made of self-compacting concrete, such as model C25W6F50. The bottom surface of the panel 2 is fixed with transverse stiffening ribs 3 and longitudinal stiffening ribs 4. The transverse stiffening ribs 3 and longitudinal stiffening ribs 4 are used to reinforce the panel 2. The transverse stiffening ribs 3 and longitudinal stiffening ribs 4 are generally welded to the panel 2, and preferably welded on both sides to ensure stability. The transverse stiffening ribs 3 and longitudinal stiffening ribs 4 can also be mechanically connected to the panel 2. The transverse stiffening ribs 3 and longitudinal stiffening ribs 4 are arranged at intervals, and preferably at equal intervals. Both the transverse stiffening rib 3 and the longitudinal stiffening rib 4 are strip-shaped, and the planes corresponding to the transverse stiffening rib 3 and the longitudinal stiffening rib 4 are perpendicular to the plane corresponding to the panel 2. The plane corresponding to the longitudinal stiffening rib 4 is consistent with the water flow direction, and the plane corresponding to the transverse stiffening rib 3 is perpendicular to the water flow direction. Figure 1 In the middle, the water flow direction is from left to right. The transverse stiffening ribs 3 and longitudinal stiffening ribs 4 form a rectangular grid on the bottom surface of panel 2. Each grid is rectangular, and the size of each grid is preferably the same. The specific parameters of panel 2, transverse stiffening ribs 3, and longitudinal stiffening ribs 4 are determined by calculation. For example, panel 2, transverse stiffening ribs 3, and longitudinal stiffening ribs 4 are all made of Q355D material. The thickness of panel 2 is 30mm. The thickness of the transverse stiffening ribs 3 on the upstream and downstream sides of the door groove structure 13 is 30mm, the thickness of the transverse stiffening ribs 3 in other parts is 20mm, and the thickness of the longitudinal stiffening ribs 4 is 20mm.
[0023] The bottom of the panel 2 is also fixed with first anchor bars 5, which play a role of fixing the panel 2. The first anchor bars 5 are multiple and arranged at intervals, and the panel 2 is fixed at multiple points by the first anchor bars 5. The size of the panel 2 does not affect the fixing effect, so the size of the panel 2 can be large enough, and the panel 2 on the top of the gate chamber floor 1 can be a whole piece, which improves the integrity of the panel 2. The length and diameter of the first anchor bars 5 are determined according to calculation. For example, the first anchor bars 5 are HPB235 round steel bars, and the diameter of the round steel bars is 28 mm. The upper end of the first anchor bar 5 is fixed to at least one of the panel 2, the transverse stiffening rib 3 and the longitudinal stiffening rib 4, and the lower end of the first anchor bar 5 is placed on the gate chamber floor 1. In order to stably connect the upper end of the first anchor bar 5 with the panel 2, the upper end of the first anchor bar 5 is bent into a right angle and welded to the inside corner formed by the panel 2 and the transverse stiffening rib 3, or welded to the inside corner formed by the panel 2 and the longitudinal stiffening rib 4. In order to ensure the stability of the welding, the welding of the upper end of the first anchor bar 5 adopts double-sided welding. In order to improve the anchoring effect of the first anchor bar 5 in the solidified body, the lower end of the first anchor bar 5 is provided with a hook, and each hook is placed on the gate chamber floor 1. The first anchor bar 5 can be provided with a hook at only one end and placed on the gate chamber floor 1, and the other end is provided with a right angle and welded to at least one of the panel 2, the transverse stiffening rib 3 and the longitudinal stiffening rib 4; the first anchor bar 5 can also be provided with hooks at both ends and placed on the gate chamber floor 1, and the middle part of the first anchor bar 5 is bent into an angle and welded to at least one of the panel 2, the transverse stiffening rib 3 and the longitudinal stiffening rib 4, and the first anchor bar 5 is in the shape of a U. According to the stress of the panel 2, the preferred arrangement of the first anchor bar 5 is that the plane corresponding to the first anchor bar 5 is consistent with the direction of the water flow.
[0024] The panel 2 is also provided with grouting holes 6, and the panel 2 and the gate chamber floor 1 form a solidified body 8 by pouring concrete through the grouting holes 6, and the transverse stiffening rib 3, the longitudinal stiffening rib 4 and the first anchor bar 5 are all cast in the solidified body 8. The grouting holes 6 can also be used for venting during pouring of the concrete. After pouring the concrete between the panel 2 and the gate chamber floor 1, in order to facilitate the vibration of the concrete, the panel 2 is also provided with a vibrating hole 12. After pouring the concrete between the panel 2 and the gate chamber floor 1, in order to facilitate the flow of the concrete, the transverse stiffening rib 3 and / or the longitudinal stiffening rib 4 is provided with a string grouting hole 7 to avoid holes between the panel 2 and the gate chamber floor 1. The number of the string grouting holes 7 formed by the transverse stiffening rib 3 and the longitudinal stiffening rib 4 in a single grid is not less than 4, and the string grouting holes 7 are provided at the corners surrounded by the panel 2, the transverse stiffening rib 3 and the longitudinal stiffening rib 4. The string grouting holes 7 at the corners also have the function of the venting holes. The concrete forming the solidified body 8 is preferably self-compacting concrete, for example, the model number is C35W6F50.
[0025] The pier 9 of the flushing sluice will also be subjected to the impact of abrasion, especially the lower part of the pier 9. The pier 9 is a reinforced concrete structure, and the concrete of the pier 9 is preferably self-compacting concrete, for example, the type of which is C35W6F50. A construction joint is provided between the pier 9 and the solidified body 8, and the construction joint is slightly higher than the top surface of the face plate 2. In order to improve the durability of the pier 9 of the flushing sluice, the steel plate lining structure of the flushing sluice further comprises the pier 9, and the side wall of the pier 9 is fixed with a side plate 10, which is a steel plate. The side plate 10 can be arranged on the entire side wall of the pier 9, or only on the lower part of the side wall. The specific parameters of the side plate 10 are determined according to the calculation, for example, the material of the side plate 10 is Q355D, and the thickness of the side plate 10 is 20 mm. The side of the side plate 10 facing the pier 9 is fixed with a second anchor 11, which is anchored in the pier 9. The length and diameter of the second anchor 11 are determined according to the calculation, for example, the second anchor 11 is an HPB235 round steel bar with a diameter of 28 mm. The side plate 10 and the second anchor 11 can be connected by welding or other mechanical connection. For example, one end of the second anchor 11 is provided with a right-angled elbow and is welded to the side plate 10, and the other end of the second anchor 11 is provided with a hook which is fixed in the pier 9. The lower part of the side plate 10 is poured into the solidified body 8 between the face plate 2 and the bottom plate 1 of the gate chamber, and the side of the side plate 10 facing the gate chamber is welded to the face plate 2. The weld of the overflow surface needs to be polished to be smooth and flat, and there should be no local protrusions or pits.
Claims
1. A steel plate lining structure for a flood discharge gate, comprising a gate chamber bottom plate (1) and a top panel (2), wherein the gate chamber bottom plate (1) is a reinforced concrete structure and the panel (2) is a steel plate, characterized in that: The bottom surface of the panel (2) is fixed with transverse stiffening ribs (3) and longitudinal stiffening ribs (4). The transverse stiffening ribs (3) and longitudinal stiffening ribs (4) are arranged at intervals. The transverse stiffening ribs (3) and longitudinal stiffening ribs (4) are strip-shaped. The planes corresponding to the transverse stiffening ribs (3) and longitudinal stiffening ribs (4) are perpendicular to the planes corresponding to the panel (2). The planes corresponding to the longitudinal stiffening ribs (4) are consistent with the direction of water flow. The planes corresponding to the transverse stiffening ribs (3) are perpendicular to the direction of water flow. The bottom of the panel (2) is also fixed with first anchor bars (5). The first anchor bars (5) are arranged at intervals. The upper end of the first anchor bars (5) is fixed to at least one of the three: the panel (2), the transverse stiffening ribs (3), and the longitudinal stiffening ribs (4). The lower end of the first anchor bars (5) is placed on the bottom plate of the gate chamber (1). The panel (2) is also provided with grouting holes (6). The solidified solid (8) formed by pouring concrete through the grouting holes (6) is between the panel (2) and the bottom plate of the gate chamber (1).
2. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 1, characterized in that: The transverse stiffening rib (3) and / or the longitudinal stiffening rib (4) are provided with slurry passage holes (7).
3. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 1, characterized in that: A slurry passage hole (7) is provided at the corner formed by the panel (2), the transverse stiffening rib (3) and the longitudinal stiffening rib (4).
4. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 1, characterized in that: The panel (2) is also provided with a vibratory hole (12).
5. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 1, characterized in that: The steel plate lining structure of the flood discharge gate also includes a gate pier (9). The side wall of the gate pier (9) is fixed with a side plate (10). The side plate (10) is a steel plate. The side of the side plate (10) facing the gate pier (9) is fixed with a second anchor bar (11). The second anchor bar (11) is anchored inside the gate pier (9).
6. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 5, characterized in that: The lower part of the side plate (10) is cast in the solidified solid (8) between the panel (2) and the bottom plate (1) of the gate chamber. The side plate (10) facing the gate chamber is welded to the panel (2). One end of the second anchor bar (11) is provided with a right angle bend and welded to the side plate (10). The other end of the second anchor bar (11) is provided with a hook.
7. The steel plate lining structure for the sand flushing and flood discharge gate as described in any one of claims 1 to 6, characterized in that: The upper end of the first anchor bar (5) is bent into a right angle and welded to the inside corner formed by the panel (2) and the transverse stiffening rib (3), or welded to the inside corner formed by the panel (2) and the longitudinal stiffening rib (4).
8. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 7, characterized in that: The lower end of the first anchor bar (5) is provided with a hook, and each hook is placed on the bottom plate (1) of the gate chamber.
9. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 8, characterized in that: The plane corresponding to the first anchor bar (5) is consistent with the direction of water flow.
10. The steel plate lining structure of the sand flushing and flood discharge gate as described in claim 7, characterized in that: The panel (2) and the side plate (10) are both made of Q355D material. The thickness of the panel (2) is 30mm and the thickness of the side plate (10) is 20mm. The first anchor bar (5) and the second anchor bar (11) are both HPB235 plain round steel bars with a diameter of 28mm. The gate pier (9), the gate chamber bottom plate (1), and the solidified material (8) between the panel (2) and the gate chamber bottom plate (1) are all self-compacting concrete.