Tidal bridge at junction of salt water and fresh water
By installing a snap door on the tidal barrier bridge at the junction of salt water and freshwater, the salt water boundary is automatically controlled by water pressure, the management problems of traditional tidal barrier structures under the influence of tidal flow are solved, and the effects of automation, simplification of management and cost reduction are achieved.
Patent Information
- Application Number
- CN202421834606.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Under the influence of tidal current, traditional tidal barrier structures are difficult to effectively control the water level difference and gate opening, resulting in problems such as over-discharge or seawater backflow, and the management costs are high.
A tide-blocking bridge at the junction of salt water and fresh water is designed. By installing a tap door at the first column, the salt water boundary is realized, and under the action of internal and external water pressure, it automatically blocks tide and drains water to avoid frequent opening and closing of the gate.
It realizes automated tide arrest and drainage, simplifies operation management, reduces operating costs, and improves safety and economy.
Smart Images
Figure CN222893597U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water conservancy projects, in particular to a tide-blocking bridge at the junction of salt water and fresh water. Background Art
[0002] In the area where the runoff and tides of rivers meet at the mouth of the sea, salt water and fresh water merge.
[0003] The location of the salt-fresh water boundary mainly depends on the amount of runoff and the size of the ocean tide. When the runoff is not large and the tidal level is high, the saltwater tide will invade upstream, threatening the production and domestic water supply in the upper reaches of the river. In order to prevent the saltwater tide from going upstream, tide-blocking structures such as tidal bridges and sluices are the most powerful, economical and effective options for controlling and applying the saltwater tide.
[0004] Traditional tide-blocking structures are affected by tidal flow, and the water level difference between upstream and downstream of the tide-blocking structures changes frequently in size and direction. It is difficult for operation and management personnel to control the drainage window period and gate opening, which can easily cause over-discharge or seawater backflow. According to on-site feedback, in order to reduce management costs, operation and management units often form a mode of long-term closure of gates for water storage and short-term centralized drainage, which affects the tide-blocking effect. Utility Model Content
[0005] The purpose of the utility model is to provide a tide-blocking bridge at the junction of salt water and fresh water in response to the defects of the prior art. By installing a flap gate at the first column, the salt water and fresh water boundary is achieved. On the other hand, under the action of internal and external water pressure, the tide is automatically blocked and waterlogging is drained, and frequent opening and closing of the gate is avoided. There is no need for opening and closing equipment, and operation management is simplified, operating costs are reduced, and safe and economical effects are achieved.
[0006] The utility model provides a tide-blocking bridge at the junction of salt water and fresh water, comprising: a base; a first column, wherein the first column is connected to the base; and a flap door, wherein the flap door is installed between two adjacent first columns, and the flap door opens in the direction of salt water.
[0007] Furthermore, it also includes: a second column, the second column is connected to the base. Still further, it also includes: a bridge deck, the bridge deck is installed on the top of the first column and the second column.
[0008] Furthermore, the flap door further comprises: an upper flap door seat, the two ends of which are respectively mounted on the upper ends of two adjacent first upright posts; a lower flap door seat, the two ends of which are respectively mounted on the bottom ends of two adjacent first upright posts, and the lower flap door seat has a water stop strip; and a flap door body, the upper end of which is hinged to the upper flap door seat, and when the flap door body is closed, the lower end of which is connected to the water stop strip of the lower flap door seat. Furthermore, the water stop strip is a P-shaped water stop strip.
[0009] Furthermore, the bridge deck also includes a bridge deck body, a bridge hole and a fixed pile, the bridge hole passes through the bridge deck body, and the fixed pile is located on the surface of the bridge deck body. Still further, the flap gate also includes a lifting ring and a traction rope, the lifting ring is installed on the flap gate body, one end of the traction rope is tied to the lifting ring, and the other end of the traction rope passes through the bridge hole and is tied to the fixed pile. Still further, the bridge hole is narrow at the top and wide at the bottom. Still further, the bridge deck also has a bridge deck crossbeam, the two ends of the bridge deck crossbeam are respectively erected on the tops of the first column and the second column, and the bridge deck body is installed on the bridge deck crossbeam.
[0010] Furthermore, a plurality of the flap doors are arranged in a bow shape.
[0011] The beneficial effects of the utility model are:
[0012] 1. By installing a flap gate at the first column, the boundary between salt water and fresh water is achieved. On the other hand, under the action of internal and external water pressure, it automatically blocks tides and drains water, avoiding frequent opening and closing of the gate. There is no need for opening and closing equipment, which simplifies operation management, reduces operating costs, and achieves a safe and economical effect.
[0013] 2. By setting the flap gate into a bow shape, the water flow area is increased, the impact on the flap gate and the bridge body is reduced, and the water flow pressure is alleviated. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0015] Figure 2 A top view of an embodiment of the utility model;
[0016] Figure 3 This is an enlarged schematic diagram of the bridge hole of the embodiment of the utility model;
[0017] Figure 4 It is an enlarged schematic diagram of the water stop strip of an embodiment of the utility model.
[0018] Figure numerals: 1-base; 2-first column; 3-flap door; 31-upper flap door seat; 32-lower flap door seat; 33-flap door body; 34-lifting ring; 35-traction rope; 36-water stop strip; 4-second column; 5-bridge deck; 51-bridge deck body; 52-bridge hole; 53-fixed pile; 54-bridge deck beam; 6-salt water; 7-fresh water; 8-guardrail. DETAILED DESCRIPTION
[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0020] refer to Figure 1-4 , a tidal bridge at the junction of salt water and fresh water, comprising: a base 1 installed on the riverbed. Figure 1 As shown, the first column 2 is connected to the base 1, and the second column 4 is connected to the base 1. The flap door 3 is installed between two adjacent first columns 2, and the flap door 3 opens in the direction of salt water. The two ends of the upper flap door seat 31 are respectively installed at the upper ends of the two adjacent first columns 2, and the two ends of the lower flap door seat 32 are respectively installed at the bottom ends of the two adjacent first columns 2. The lower flap door seat 32 has a water stop strip 36 (as shown in FIG. Figure 4 As shown), the water stop strip 36 is a P-shaped water stop strip. The upper end of the flap door body 33 is hinged to the upper flap door seat 31. When the flap door body 33 is closed, the lower end of the flap door body 33 is connected to the water stop strip 36 of the lower flap door seat 32. The bridge deck 5 is installed on the top of the first column 2 and the second column 4. The bridge deck 5 also includes a bridge deck body 51, a bridge hole 52, fixed piles 53 and a bridge deck cross beam 54. The two ends of the bridge deck cross beam 54 are respectively erected on the top of the first column 2 and the second column 4. The bridge deck body 51 is installed on the bridge deck cross beam 54. The bridge hole 52 runs through the bridge deck body 51. The bridge hole 51 is narrow at the top and wide at the bottom (as shown in FIG. Figure 3 As shown in FIG. 1 , the fixing pile 53 is located on the surface of the bridge deck body 51. The flap gate 3 also includes a lifting ring 34 and a traction rope 35. The lifting ring 34 is installed on the flap gate body 33. One end of the traction rope 35 is tied to the lifting ring 34. The other end of the traction rope 35 passes through the bridge hole 52 and is tied to the fixing pile 53.
[0021] In this embodiment, all flap gates 3 are arranged in a bow shape along the salt water and fresh water boundary (such as Figure 2 This is beneficial to increase the water flow area, reduce the impact on the flap door and the bridge body, and alleviate the water flow pressure.
[0022] When the water level on the salt water 6 side is higher than that on the fresh water 7 side, the flap gate 3 is closed under the combined force of the water pressure on the salt water 6 side and the self-weight of the flap gate 3 to prevent the salt tide from going up. At this time, the lower end of the flap gate body 33 is connected to the water stop strip 36 of the lower flap gate seat 32. When the water level on the salt water 6 side is lower than that on the fresh water 7 side, the combined force of the water pressure on the fresh water 7 side overcomes the self-weight of the flap gate 3, and the flap gate 3 is opened in the direction of the salt water 6 side to discharge the flood water on the fresh water 7 side in time. When the water level on the salt water 6 side is not much different from that on the fresh water 7 side, the water exchange channel on both sides is closed due to the self-weight of the flap gate 3, which can maintain a certain water level on the fresh water 7 side of the inland river for agricultural irrigation, landscape ecological water use, etc. Pedestrians can pass on the bridge deck 5, and the guardrail 8 is used for protection.
[0023] In special circumstances, the traction rope 35 can be manually pulled to pull up the flap door body 33 to open the flap door 3. Since the bridge hole 52 is narrow at the top and wide at the bottom, the wear of the traction rope 35 can be avoided to a certain extent, and it is more labor-saving.
[0024] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A tidal bridge at the junction of salt water and fresh water, characterized in that: include: Base (1); A first column (2), the first column (2) being connected to the base (1); A flap door (3), the flap door (3) is installed between two adjacent first upright posts (2), and the flap door (3) opens in the direction of salt water.
2. The tidal bridge at the junction of salt water and fresh water according to claim 1, characterized in that: Also includes: A second column (4), wherein the second column (4) is connected to the base (1).
3. The tidal bridge at the junction of salt water and fresh water according to claim 2, characterized in that: Also includes: A bridge deck (5), the bridge deck (5) being installed on the top ends of the first column (2) and the second column (4).
4. The tidal bridge at the junction of salt water and fresh water according to claim 3, characterized in that: The flap door (3) further comprises: An upper door seat (31), the two ends of which are respectively mounted on the upper ends of two adjacent first upright posts (2); A lower door seat (32), the two ends of which are respectively mounted on the bottom ends of two adjacent first upright columns (2), and a water stop strip (36) is provided on the lower door seat (32); A flap door body (33), the upper end of which is hinged to the upper flap door seat (31); when the flap door body (33) is closed, the lower end of which is connected to the water stop strip (36) of the lower flap door seat (32).
5. The tidal bridge at the junction of salt water and fresh water according to claim 4, characterized in that: The water stop strip (36) is a P-shaped water stop strip.
6. The tidal bridge at the junction of salt water and fresh water according to claim 4, characterized in that: The bridge deck (5) further comprises a bridge deck body (51), a bridge hole (52) and fixed piles (53); the bridge hole (52) penetrates the bridge deck body (51), and the fixed piles (53) are located on the surface of the bridge deck body (51).
7. The tidal bridge at the junction of salt water and fresh water according to claim 6, characterized in that: The flap door (3) further comprises a lifting ring (34) and a traction rope (35), wherein the lifting ring (34) is mounted on the flap door body (33), one end of the traction rope (35) is tied to the lifting ring (34), and the other end of the traction rope (35) passes through the bridge hole (52) and is tied to the fixed pile (53).
8. The tidal bridge at the junction of salt water and fresh water according to claim 6, characterized in that: The bridge hole (52) is narrow at the top and wide at the bottom.
9. The tidal bridge at the junction of salt water and fresh water according to claim 6, characterized in that: The bridge deck (5) also has a bridge deck crossbeam (54), the two ends of which are respectively mounted on the top ends of the first column (2) and the second column (4), and the bridge deck body (51) is installed on the bridge deck crossbeam (54).
10. The tidal bridge at the junction of salt water and fresh water according to claim 1, characterized in that: A plurality of flap doors (3) are arranged in a bow shape.