Closing method of ultra-large-span shore control floating body miter gate tide gate

Abstract

The invention discloses a closing method of a super-large-span shore control floating body miter gate tide gate, which comprises the following steps: firstly, opening a rotary gate, emptying a medium in a water stop bag, enabling a supporting rod to be in a contraction state, forming an overflowing channel at the bottom of a gate body, and then enabling the gate body to rotate towards the center of a river channel through a balance opening and closing device, and then, the supporting rod extends out to be supported on the gate bottom plate, the water stop bag is inflated to block the overflowing channel, and finally, the rotary gate is closed, so that the closing operation is completed. The tidal gate adopting the gate-in-gate design has the advantages of being stable in structure, flexible to open and close, safe in operation, convenient and fast to overhaul and the like, and the problem of damming and heeling in the opening and closing process of the floating body miter gate is solved.

Description

Technical Field

[0001] The invention relates to the technical field of tide gates, and in particular to a closing method for a super-large-span shore-controlled floating miter gate tide gate. Background Art

[0002] As global temperatures continue to rise, sea levels are rising slowly, while land continues to sink, resulting in frequent seawater backflow and urban waterlogging disasters in coastal areas during flood season. In order to protect the lives and property of people in coastal cities, flood control walls or tide gates can be built. In actual construction, since flood control wall projects require large investments and are easy to damage the unique waterfront environment of coastal cities, most of them use tide gates to resist storm surges. Commonly used large-span tide gates (single span 100m to 200m) generally have flat double-opening fan-shaped gates, such as the Maasland tide gate in the Netherlands; vertical rotating gates, such as the Thames tide gate in the UK; vertical lifting gates, such as the Cao'e River tide gate; mirror gates, such as the Sancha River tide gate in Nanjing. However, for super-large span rivers of 400m to 500m, no matter which form of tide gate is used, gate piers must be set in the water, which causes a greater negative impact on shipping, original river hydrology and river flow during the construction, operation and maintenance stages. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a closing method for a super-large-span shore-controlled floating miter gate tidal gate, which can specifically adopt the following technical solutions: The closing method of the super-large-span shore-controlled floating miter gate tide-blocking gate of the present invention comprises a gate body, a flow hole is provided on the gate body, a rotary gate is arranged in the flow hole, and the rotary gate has a closed state that closes the flow hole and an open state that allows water to flow through; the gate body is spaced apart from the gate bottom plate, and an inflatable water-stop bag and a telescopic support rod are arranged at the bottom of the gate body; the head of the gate body is located on the outer river side of the river channel, and the tail of the gate body is connected to a balanced opening and closing device, and the balanced opening and closing device is arranged on both sides of the inner river side of the river channel; The closing method comprises: firstly opening the rotating gate, emptying the medium in the water-stop bag, and putting the support rod in a contracted state to form a flow channel at the bottom of the gate body, and then rotating the gate body toward the center of the river channel through a balanced opening and closing device until the heads of the two gate bodies are closed and connected to form a stable three-hinged arch structure, and then extending the support rod to support on the gate bottom plate, filling water into the water-stop bag to block the flow channel, and finally closing the rotating gate to complete the closing operation.

[0004] The gate body is used as a water retaining structure and a force transmission structure to transfer the water load of the head difference caused by the storm surge to the basic structure on the shore. In addition, a rotating gate is arranged in the flow hole of the gate body. When the gate body is opened and closed, the rotating gate is in an open state to reduce the water resistance of the gate body and prevent the gate body from tilting vertically and horizontally during the opening and closing process. The "gate in gate" design can solve the problems of excessive waterlogging and excessive opening and closing force during the opening and closing of the floating miter gate, ensure the vertical stability of the gate body, and contribute to the overall safety of the tide gate.

[0005] A flow channel is reserved at the bottom of the gate body to solve the problems of water accumulation and gate jamming due to silt accumulation during the opening and closing process of the floating miter gate. When the floating miter gate is completely closed, a water-stop bag is used to seal the bottom flow channel to prevent excessive flow. At this time, the support rod is extended and supported on the gate bottom plate, playing the role of supporting the gate body.

[0006] Preferably, the gate body is a hollow metal pontoon structure, the flow hole is a long hole arranged along the length direction of the gate body, and a plurality of rotating gates are arranged side by side in each flow hole, and the rotating shaft of the rotating gate is arranged in the vertical direction. The structure of arranging the plurality of rotating gates side by side can improve the convenience of construction, and the vertical arrangement of the rotating shaft is conducive to further reducing the water resistance.

[0007] Preferably, a rotation driving mechanism connected to the rotating shaft of the rotating gate is arranged on the top wall of the flow hole.

[0008] Preferably, the gate body is a streamlined structure with narrow ends and wide in the middle, and a plurality of water-stop bags are arranged at intervals along the width direction of the gate body. Each water-stop bag extends along the length direction of the gate body and is arranged in the shape of the outline of the gate body; the support rod is arranged between adjacent water-stop bags.

[0009] Preferably, anti-collision buffer layers are provided on both the water-facing surface and the water-receiving surface of the gate body.

[0010] Preferably, an alignment guide mechanism is provided at the joint of the head of the gate body, and the alignment guide mechanism includes a V-shaped guide groove arranged at the top of the gate body on one side and a roller arranged at the top of the gate body on the other side. The V-shaped guide groove is arranged horizontally and opens toward the gate body on the other side, and the roller is adapted to correspond to the V-shaped guide groove.

[0011] When the floating miter gate is about to close, one of the gates, under the action of the roller, performs a small-amplitude deceleration pendulum motion along the V-shaped guide groove, and can be quickly locked to the corner of the V-shaped groove to ensure that the two gates are closed accurately.

[0012] Preferably, the balanced opening and closing device includes a balanced opening and closing plate, which is arranged on the resistance pier of the concrete structure through a ball joint, the front end of the balanced opening and closing plate is connected to the gate body, the rear end of the balanced opening and closing plate is adapted to the C-shaped groove on the resistance pier, and a gear rack transmission mechanism is arranged between the C-shaped groove and the balanced opening and closing plate; a sliding block is arranged on the top of the balanced opening and closing plate and an elastic support wheel is arranged on the bottom, and the sliding block and the elastic support wheel are both connected to the C-shaped groove.

[0013] The C-shaped groove of the above-mentioned balanced opening and closing device is used to guide the movement of the balanced opening and closing plate, and the ball joint is used as the rotation center of the balanced opening and closing plate and the gate body to ensure that the gate body can rotate flexibly. The ball joint structure mainly bears the vertical load of the gate and the horizontal load during the opening and closing process.

[0014] Preferably, the gate body is arranged below the balanced opening and closing plate, a support pad is arranged at the tail of the gate body, and a pillow pad corresponding to the position of the support pad is arranged on the side wall of the resistance pier.

[0015] The support pad is the hinge component of the three-hinged arch structure formed by the floating miter gate. The support pad is arranged on the gate axis column and the miter column of the gate, and the pillow is arranged on the resistance pier. Both adopt a continuous support pad structure. When the gate is closed, the water pressure (horizontal load) acting on the door leaf is mainly transmitted to the resistance pier through the support pad.

[0016] Preferably, a door niche extending toward the outer river side of the river channel is provided on the front side of the resistance pier, the door niche is matched with the gate body, and the two door niches are parallel to each other.

[0017] The closing method of the super-large-span shore-controlled floating miter gate tide-blocking gate provided by the present invention, by adopting the tide-blocking gate of "gate in gate" design, makes up for the deficiency that the conventional miter gate structure is applied to the super-large-span river channel, and the gate is prone to vertical tilt and lateral tilt during the opening and closing process due to the small stroke of the opening and closing equipment; at the same time, a flow passage is reserved at the bottom of the gate body to solve the problems of waterlogging and gate jamming caused by silt accumulation during the opening and closing process of the floating miter gate, and further maintain the stability of the gate opening and closing. The above-mentioned gate body has the characteristics of stable structure, flexible opening and closing, safe operation, convenient maintenance, etc., and is placed on both sides of the river channel during normal navigation without affecting normal traffic; when the storm tide comes, it can be quickly closed to form a three-hinged arch structure to play a tide-blocking role. It does not affect navigation and the hydrological and river conditions of the original river channel during the process of structural design, manufacturing and processing, transportation and installation, and maintenance and maintenance, and can minimize the impact on the original river channel.

[0018] Compared with the prior art, the advantages of the present invention are as follows: 1) It has a wide range of applications and can be used for tidal barriers in rivers with normal spans (single span 50m to 100m), large spans (single span 100m to 200m), and super-large spans (single span 400m to 500m).

[0019] 2) The rotation center of the gate body is set on both sides of the river channel. No gate pier structure and complex mechanical and electrical equipment are required in the water, so it does not affect normal shipping. When a storm surge comes, the gate body is closed under the action of the gate opening force and forms a stable three-hinged arch structure. The water load caused by the head difference of the storm surge is transferred to the foundation on the shore through the gate leaf structure, thereby stably resisting the impact of storm surges on coastal megacities and ensuring the safety of life and property of people in coastal areas.

[0020] 3) The "gate in gate" design adopted by the present invention, that is, by installing a rotating gate on the gate body, makes up for the shortcomings of the conventional miter gate structure used in ultra-large span rivers, where the gate is prone to vertical tilt and rollover during the opening and closing process due to the small stroke of the opening and closing equipment; secondly, a flow channel is reserved at the bottom of the gate body to solve the problems of waterlogging and gate jamming due to siltation during the opening and closing of the floating miter gate, further maintaining the stability of the gate opening and closing; thirdly, by setting a positioning guide mechanism, the two gates are ensured to be accurately closed.

[0021] 4) The routine inspection and maintenance of the tide gate of the present invention is carried out in the gate niches on both sides. If major repairs are required, the gate body can be towed to the shipyard for inspection by a tugboat or directly inspected by wading. Therefore, it will not cause a significant impact on shipping during the operation and maintenance stage.

[0022] 5) The tide gate described in the present invention does not have any piers in the water, does not increase the riverbed elevation, and adopts the caisson method during construction, directly sinking the prefabricated box into the water without interrupting the construction, so it will not cause a significant impact on shipping during the construction stage.

[0023] 6) In order to solve the design problems of reasonable gate type and structure of super-large span tide gate, the space system method was directly used to design its structure in accordance with the principles of structural safety, advanced technology, flexible opening and closing, and convenient maintenance, which improved the design quality and efficiency of super-large span tide gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the tide gate described in the present invention.

[0025] Figure 2 yes Figure 1 Schematic diagram of the planar structure of the opening and closing of the middle gate body.

[0026] Figure 3 yes Figure 1Schematic diagram of the structure of the gate body on the left side of the middle.

[0027] Figure 4 yes Figure 3 Schematic diagram of the bottom structure.

[0028] Figure 5 yes Figure 3 Schematic diagram of the structure of the rotating gate.

[0029] Figure 6 yes Figure 1 Schematic diagram of the structure of the center alignment guide mechanism.

[0030] Figure 7 yes Figure 1 Schematic diagram of the structure of the balanced opening and closing plate on the left side of the middle.

[0031] Figure 8 yes Figure 7 Enlarged view of part A in . DETAILED DESCRIPTION

[0032] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific working process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0033] like Figure 1-8 As shown, the closing method of the super-large span shore-controlled floating miter gate tide-blocking gate described in the present invention is applicable to the following tide-blocking gates. It includes a pair of gate bodies 1, the head of the gate body 1 is located on the outer river side of the river channel, and the tail is connected to the balanced opening and closing device 2 arranged on both sides of the inner river side of the river channel. The front side of the resistance pier 21 of the balanced opening and closing device 2 is provided with a door niche 3 extending to the outer river side of the river channel, and the door niche 3 is adapted to the gate body 1, and the two door niches 3 are parallel to each other. When navigation is required, the gate body 1 is located in the door niche 3; when a storm surge comes, the gate body 1 rotates toward the center of the river channel under the action of the balanced opening and closing device 2 until the heads are connected to form a closed state. The closing point of the above-mentioned two gate bodies 1 is located on the outer river side of the line connecting the ball joints 22 of the two balanced opening and closing devices 2, which can form a stable three-hinged arch structure to play a tide-blocking role.

[0034] Since the above-mentioned tide gate has a large span, the gate body 1 has problems of excessive water backflow and excessive opening and closing force during the opening and closing process. When there is sediment accumulation on the riverbed, the above-mentioned problems are more serious. Therefore, a hollow metal pontoon structure is adopted in the gate body 1, and it is a streamlined structure with narrow ends and wide in the middle. A flow hole 11 is opened in the middle of the above-mentioned gate body 1, and a rotating gate 12 is installed in the flow hole 11. In this embodiment, the flow hole 11 is a long hole arranged along the length direction of the gate body 1, and a plurality of rotating gates 12 are arranged side by side in each flow hole 11, and the rotating shaft 13 of the rotating gate 12 is arranged in the vertical direction, and a rotating drive mechanism connected to the rotating shaft 13 is arranged on the top wall of the flow hole 11. The above-mentioned multiple rotating gates 12 are arranged side by side to improve the convenience of construction, and the vertical arrangement of the rotating shaft 13 is conducive to reducing the water resistance of the rotating gate 12 during the rotation process. In practical applications, it is also possible to adopt a method in which a plurality of flow holes 11 are arranged on the gate body 1, and a rotating gate 12 is arranged in each flow hole 11. The above-mentioned rotary drive mechanism includes a telescopic oil cylinder 14 arranged on the top wall of the flow hole 11, and the telescopic oil cylinder 14 is located on one side of the rotating shaft 13, and the two are not coaxial. A connecting rod 15 is fixedly installed on the rotating shaft 13, and the end of the connecting rod 15 is hingedly connected to the piston rod of the telescopic oil cylinder 14. When the telescopic oil cylinder 14 is actuated, the rotating gate 12 can be pushed to rotate. The rotating gate 12 has a closed state in which the flow hole 2 is closed and an open state in which water flows through. When the gate body 1 is opened and closed, the rotating gate 12 is in an open state, which reduces the water resistance of the gate body 1 and prevents the gate body 1 from tilting vertically and horizontally during the opening and closing process. When the gate body 1 is in a closed state, the rotating gate 12 is also in a closed state to prevent water from passing through. The above-mentioned "gate in gate" design can solve the problems of excessive waterlogging and excessive opening and closing force during the opening and closing process of the floating miter gate, ensure the vertical stability of the gate body 1, and is beneficial to the overall safety of the tide gate.

[0035] Furthermore, the gate body 1 is spaced apart from the gate bottom plate, and an inflatable water-stopping bag 4 and a telescopic support rod 5 are installed at the bottom of the gate body 1. The water-stopping bags 4 are spaced apart in a plurality of strips along the width direction of the gate body 1 of the streamlined structure, and each water-stopping bag 4 extends along the length direction of the gate body 1 and is arranged in a contour-like manner with the gate body 1, while the support rod 5 is arranged between adjacent water-stopping bags 4. When the gate body 1 is opened and closed, there is no medium in the water-stopping bag 4, and the support rod 5 is in a contracted state, so that a smooth flow passage is formed at the bottom of the gate body 1, which is used to solve the problems of waterlogging and gate jamming caused by siltation during the opening and closing process of the floating miter gate; when the gate body 1 is completely closed, the water-stopping bag 4 is inflated to expand it, the bottom flow passage is sealed, and the overflow is prevented. At the same time, the support rod 5 is extended and supported on the gate bottom plate, playing the role of supporting the gate body 1.

[0036] Furthermore, anti-collision buffer layers are provided on both the water-facing surface and the water-receiving surface of the gate body 1 .

[0037] In order to accurately close the floating miter gate, an alignment guide mechanism 6 is provided at the joint of the heads of the two gate bodies 1. The alignment guide mechanism 6 comprises a V-shaped guide groove 61 provided at the top of the gate body 1 on one side and a roller 62 provided at the top of the gate body 1 on the other side. The V-shaped guide groove 61 is provided horizontally and opens toward the gate body 1 on the other side, and the roller 62 is provided in correspondence with the V-shaped guide groove 61. When the floating miter gate is about to be closed, one of the gate bodies 1 performs a small-amplitude deceleration pendulum motion along the V-shaped guide groove 61 under the action of the roller 62, and is quickly locked to the corner of the V-shaped groove 61, thereby ensuring that the two gates are accurately closed.

[0038] The above-mentioned balanced opening and closing device includes a balanced opening and closing plate 23, which is arranged on the resistance pier 21 of the concrete structure through a ball joint 22. The front end of the balanced opening and closing plate 23 is connected to the gate body 1, and the rear end is an arc structure adapted to the C-shaped groove 24 on the resistance pier 21. A gear rack transmission mechanism is arranged between the above-mentioned C-shaped groove 24 and the balanced opening and closing plate 23. Specifically, the ball joint 22 bears the vertical load of the gate body 1 and the horizontal load during the opening and closing process, and serves as the rotation center of the balanced opening and closing plate 23 and the gate body 1, ensuring that the gate body 1 can rotate flexibly. The C-shaped groove 24 is used to guide the movement of the balanced opening and closing plate 23; the gear rack transmission mechanism is used to drive the balanced opening and closing plate 23 to rotate, which includes an inner gear ring 25 with a concave tooth surface installed on the C-shaped groove 24, and a motor-driven drum gear 26 is installed on the top of the balanced opening and closing plate 23. The drum gear 26 adopts a follow-up arrangement to ensure that the gear is always effectively engaged with the rack, providing opening and closing power for the floating miter door and maintaining the posture of the floating miter door during opening and closing and tide-proofing. Furthermore, a slider 27 is installed on the top of the balanced opening and closing plate 23, and an elastic support wheel 28 is installed on the bottom. The slider 27 and the elastic support wheel 28 are both arranged in the C-shaped groove 24 and are connected to the top and bottom surfaces of the C-shaped groove 24 respectively.

[0039] Furthermore, the gate body 1 is fixed below the balanced opening and closing plate 23, and a support pad 7 is installed on the gate shaft column and the miter column at the tail of the gate body 1, and a pillow corresponding to the position of the support pad 7 is arranged on the side wall of the resistance pier 21. The support pad 7 and the pillow adopt a continuous support pad structure. When the two gate bodies 1 are in a closed state, the overlapping support pads serve as the hinge point components of the three-hinged arch structure of the floating miter gate, and transfer the water pressure (horizontal load) acting on the gate body 1 to the resistance pier 21.

[0040] When designing and constructing the above-mentioned tide gate, the following steps shall be followed: First, determine the reasonable location of the tidal gate according to the engineering geological conditions of the coastal city estuary, underwater geological and topographic conditions, river hydrological and river flow conditions, navigation needs, and the construction conditions on both sides of the river. Secondly, determine the reasonable width of the tidal gate based on navigation needs, underwater geological and topographic conditions, and river hydrological and river flow conditions; Secondly, according to the reasonable engineering location and reasonable width of the tidal gate, following the requirements of "structural safety, flexible opening and closing, stable operation, and convenient maintenance", the spatial system method is used for overall structural design; Finally, the tide gates were constructed according to the design plan, and problems found in actual operation were adjusted and resolved in a timely manner to ensure the normal operation of the tide gates.

[0041] The tide gate described in the present invention has the characteristics of stable structure, flexible opening and closing, safe operation, convenient maintenance, etc. At the same time, it does not affect the navigation and the hydrological river flow of the original river channel during the processes of structural design, manufacturing and processing, transportation and installation, and maintenance, thereby minimizing the impact on the original river channel.

[0042] The closing method of the ultra-large-span shore-controlled floating miter gate tide gate of the present invention comprises the following steps: First, open the revolving gate 12, drain the medium in the water-stop bag 4, and put the support rod 5 in a retracted state to form a flow channel at the bottom of the gate body 1. Then, the gate body 1 is rotated toward the center of the river channel through the balanced opening and closing device 2, and the two gate bodies 1 are quickly closed and connected to form a stable three-hinged arch structure through the alignment guide mechanism 6 at the head. After that, the support rod 5 is extended to support on the gate bottom plate, and the water-stop bag 4 is inflated to block the flow channel. Finally, the revolving gate 12 is closed to complete the closing operation.

[0043] It should be noted that, in the description of the present invention, terms indicating orientation or positional relationships, such as "front", "rear", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A closing method for a super-large-span shore-controlled floating miter gate tidal gate, characterized in that: The tide-blocking gate comprises a gate body, a flow hole is provided on the gate body, a rotating gate is arranged in the flow hole, and the rotating gate has a closed state in which the flow hole is closed and an open state in which water flows through; the gate body is spaced apart from the gate bottom plate, and an inflatable water-stop bag and a telescopic support rod are arranged at the bottom of the gate body; the head of the gate body is located on the outer river side of the river channel, and the tail of the gate body is connected to a balanced opening and closing device, and the balanced opening and closing device is arranged on both sides of the inner river side of the river channel; The closing method comprises: firstly opening the rotating gate, emptying the medium in the water-stop bag, and putting the support rod in a contracted state to form a flow channel at the bottom of the gate body, and then rotating the gate body toward the center of the river channel through a balanced opening and closing device until the heads of the two gate bodies are closed and connected to form a stable three-hinged arch structure, and then extending the support rod to support on the gate bottom plate, inflating the water-stop bag to block the flow channel, and finally closing the rotating gate to complete the closing operation.

2. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 1 is characterized in that: The gate body is a hollow metal buoy structure, the flow holes are long holes arranged along the length direction of the gate body, a plurality of rotary gates are arranged side by side in each flow hole, and the rotating shaft of the rotary gate is arranged along the vertical direction.

3. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 2 is characterized in that: A rotating drive mechanism connected to the rotating shaft of the rotating gate is arranged on the top wall of the flow hole.

4. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 1 is characterized in that: The gate body is a streamlined structure with narrow ends and a wide middle. A plurality of water-stop bags are arranged at intervals along the width direction of the gate body. Each water-stop bag extends along the length direction of the gate body and is arranged in the shape of the gate body. The support rod is arranged between adjacent water-stop bags.

5. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 1 is characterized in that: Anti-collision buffer layers are arranged on the water-facing surface and the water-receiving surface of the gate body.

6. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 1 is characterized in that: The alignment guide mechanism includes a V-shaped guide groove arranged on the top of one gate body and a roller arranged on the top of the other gate body. The V-shaped guide groove is arranged horizontally and opens toward the other gate body. The roller is adapted to correspond to the V-shaped guide groove.

7. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 1 is characterized in that: The balanced opening and closing device includes a balanced opening and closing plate, which is arranged on the resistance pier of the concrete structure through a ball joint, the front end of the balanced opening and closing plate is connected to the gate body, the rear end of the balanced opening and closing plate is adapted to the C-shaped groove on the resistance pier, and a gear rack transmission mechanism is arranged between the C-shaped groove and the balanced opening and closing plate; a sliding block is arranged on the top of the balanced opening and closing plate and an elastic support wheel is arranged on the bottom, and the sliding block and the elastic support wheel are both connected to the C-shaped groove.

8. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 7 is characterized in that: The gate body is arranged below the balanced opening and closing plate, a support pad is arranged at the tail of the gate body, and a pillow pad corresponding to the position of the support pad is arranged on the side wall of the resistance pier.

9. The closing method of the super-large-span shore-controlled floating miter gate tidal gate according to claim 7 is characterized in that: A door niche extending toward the outer river side of the river channel is arranged on the front side of the resistance pier, the door niche is matched with the gate body, and the two door niches are parallel to each other.

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