CN116446346A - Buoyancy-supported telescopic large-span tide gate and construction method and working method thereof - Google Patents

Abstract

The invention discloses a buoyancy support telescopic large-span tide gate and a construction method and a working method thereof. The tide blocking gate supports the telescopic door by utilizing buoyancy generated by the buoyancy supporting component, resists overturning moment when the telescopic door blocks tide, is favorable for the integral stability of the telescopic door, further can effectively reduce the size of the telescopic door, and can greatly reduce the weight of the telescopic door, thereby reducing the opening and closing force of the telescopic door and shortening the opening and closing time.

Description

Buoyancy-supported telescopic large-span tide gate and construction method and working method thereof

Technical Field

The invention belongs to the technical field of hydraulic gates, and particularly relates to a buoyancy-supported telescopic large-span tide gate, a construction method and a working method.

Background

The sea water-saving type river water-saving device is a large ocean country, has a long coastline, has a plurality of coastal rivers, has great influence on the coastal rivers due to storm tides, has a plurality of estuaries for constructing tidal gates for preventing influence of storm tides on inland river channels, and has hundreds of coastal rivers such as long triangles, bead triangles, bohai Bay and the like, and the tidal gates are required to be constructed for blocking the tides. For example, in the Shanghai city of the Yangtze river, in order to prevent storm surge in the first year, the flood control walls on the two sides of the Huangpu river need to be heightened, engineering investment is huge, and the excessively high flood control walls also affect the construction and production of the two sides and also affect urban volumes; in order to prevent the storm tide in the first thousand years without increasing engineering along the two banks of the river, a tide blocking gate is required to be built at the river mouth of the yellow Pu river, and the storm tide is blocked outside the sea entrance.

The main function of the tide gate is to prevent tide water exceeding the design standard from entering the inland, the current tide gate in the world mainly comprises a helicopter gate, an arc gate, a triangular gate and the like, and as most of the tide gates need to meet the navigation requirement, the tide gate body has large span and adopts more arc gates, in the built tide gate, the common point of the gate body is that the gate body is of a steel structure and the panel is of a steel panel, so as to meet the requirements of rigidity and strength, all the tide gates are generally thick and have large gate weight, the required opening and closing force is large and the opening and closing time is long, the opening and closing time is usually about 1.0h, even up to 2.5h, and the engineering investment is large and the operation cost is high; therefore, the gate type is a key point of the design of the tide gate. For example, the new water channel tidal gate of deer Tedan in Netherlands has novel design and advanced technology, is horizontally arranged on a new water channel with the width of 360m and the depth of 17m, and consists of two huge support arms, wherein the top ends of the support arms are respectively provided with a hollow arc gate with the height of 22m and a ballast water tank, the weight of the gate reaches 15000t, the support arms and a spherical coupling fixed on a river channel reach 600t, the gate body span is large and the weight is large, and the opening and closing time is long, generally about 1h is needed. In addition, most of the river inlets are not convenient for flow breaking and navigation breaking construction, and cofferdam construction is adopted separately, so that navigation can be guaranteed, but construction measures are large in investment and even higher than engineering cost.

Moreover, the steel gate needs to be regularly maintained, lifting equipment is needed during operation, engineering maintenance is inconvenient, and the steel gate is changed in dry and wet mode due to changeable use environments, such as water level fluctuation, or is polluted by water quality and eroded by gas, sunlight and aquatic organisms, and is subjected to impact friction and the like of water flow, silt, ice and floaters, so that the surface of the steel gate is rapidly and universally rusted, the rusting phenomenon exists at different degrees in the steel gate which operates for several years, the strength of steel gate components is reduced due to serious rusting, and the operation safety of the steel gate is influenced, so that the corrosion resistance and the operation maintenance investment of the steel gate are large.

As shown in fig. 1 and 2 of the drawings, the stress system of the conventional large-span tidal barrier is to transversely transfer the load to the gate pier 37, the gate 38 is determined by the width of the gate hole and the water blocking height, and under the condition of the same water blocking height, the larger the gate hole is, the larger the stress of the gate 38 is, the gate 38 is transversely stressed, and the rigidity and strength of the gate 38 are required, so that the gate hole span is limited.

Aiming at the current situation of the large-span tide gate, an innovative tide gate type is needed.

Disclosure of Invention

The invention provides a buoyancy-supported telescopic large-span tide gate, a construction method and a working method thereof.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a scalable large-span of buoyancy support keeps off tide gate, includes the base that sets up in the estuary bottom and spaned the estuary, the base both ends are located the estuary both sides bottom respectively, base top surface bilateral symmetry is equipped with the flexible door, flexible door upstream side is the manger plate side, and the downstream side is the inland side, the flexible door is connected buoyancy support component in inland side department, flexible door outside cladding has waterproof cloth, both sides the flexible door stretches out the butt joint in order to close the door, forms the fender tide gate of shutoff estuary.

Further, the base is formed by splicing reinforced concrete immersed tubes prefabricated by a plurality of sections of factories, a gallery for overhauling and maintaining is formed in the inner cavity of the base, the top surface of the base is a plane and is provided with a plurality of silt flushing ports, a pipeline connected with each silt flushing port is arranged in the gallery, and a silt flushing water pump is further arranged in the gallery.

Further, the expansion door comprises a plurality of door body frames which are identical and are arranged in the direction of the river side from the water retaining side, one or more layers of cross bracing is/are connected between every two adjacent door body frames, each layer of cross bracing comprises two cross bracing rods which are arranged in a crossing mode, the middle parts of the two cross bracing rods are connected through a horizontal first rotating shaft in a rotating mode, the bottom ends of the two cross bracing rods are hinged to the lower portions of the door body frames on the corresponding sides through simple hinges, the top ends of the two cross bracing rods are connected with second rotating shafts in vertical sliding grooves on the corresponding sides on the upper portions of the door body frames in a rotating mode, and the second rotating shafts slide up and down along the sliding grooves.

Further, the buoyancy support component comprises a plurality of same buoyancy support parts, each door body frame is provided with one or more buoyancy support parts, each buoyancy support part comprises an arc rod with a downward arc center and a hollow sealing floating column, the upper end of each arc rod is connected with the inland side of the door body frame, the lower end of each arc rod is connected with the top end of each floating column, and the diameter of each floating column is smaller than or equal to the distance between every two adjacent door body frames after the telescopic door is completely contracted.

Further, the door body frame is divided into a single-layer type and a desk-withdrawal type according to the water depth of the water retaining side; the single-layer door body frame comprises a plurality of first upright posts which are arranged side by side from the water retaining side to the inland side direction and have the same height, and the first upright posts are sequentially connected through a plurality of first cross beams from bottom to top; the frame of the withdrawal type door body comprises a plurality of second upright posts which are arranged side by side in the direction of the water retaining side to the inland side and gradually increase in height, and the second upright posts are connected through a plurality of second cross beams from bottom to top in sequence.

Further, the telescopic door is driven to extend or retract by a traveling device, the traveling device is arranged between adjacent door body frames and is fixedly connected with one of the door body frames, a plurality of traveling wheels are arranged at the bottom end of the traveling device, and a traveling track for traveling the traveling wheels is arranged on the top surface of the base; the telescopic door lower part is provided with the location direction subassembly in the side of keeping off water and inland side department symmetry, be provided with respectively on the base top surface with both sides the guide rail of location direction subassembly looks adaptation, door body frame bottom is provided with a plurality of gyro wheels.

Further, the location direction subassembly include a plurality of the same and with the unanimous location direction piece of door body frame number, the location direction piece including set up in the corresponding side of door body frame and the inwards U type reverse hook of opening, the guide rail be the notch outwards and along the logical long channel-section steel that flexible direction of expansion gate was arranged, the lower wall card of U type reverse hook is located corresponding side the channel-section steel upper wall inboard department and along the channel-section steel upper wall horizontal slip, the channel-section steel lower wall with be equipped with rubber waterstop and pass through bolted connection between the base top surface.

Further, a gate warehouse with an open top is arranged on the corresponding side bank of the estuary, the telescopic gate is retracted to the corresponding gate warehouse, control towers which are adjacent to the gate warehouse are respectively arranged on the banks on the two sides of the tide gate, and the bottoms of the control towers are communicated with the gallery.

Further, the waterproof cloth is rubber waterproof cloth, the waterproof cloth is adhered to the door body frame, and the waterproof cloth is folded in half to the inner side of the telescopic door at equal distance perpendicular to the telescopic direction of the telescopic door to form a plurality of marks; the door body frame of telescopic door butt joint department is butt joint end door body frame, one of them butt joint end door body frame outside is equipped with a plurality of inserted bars, another butt joint end door body frame outside be equipped with a plurality of respectively with inserted bar looks adaptation bolt hole.

A construction method of a buoyancy-supported telescopic large-span tide gate comprises the following steps:

s1, arranging the base at the bottom of a estuary;

s2, manufacturing two sections of frame type expansion doors in a factory;

s3, enabling the two sections of the telescopic doors to extend out to a maximum length state, respectively coating waterproof cloth on the outer sides of the two sections of the telescopic doors, and respectively connecting the two sets of buoyancy support components at the inland sides of the two sections of the telescopic doors;

s4, enabling the two sections of the telescopic doors to be contracted to the shortest length state, and conveying to a river mouth site;

s5, respectively installing two sections of the telescopic doors on the top surfaces of the bases on two sides of the estuary;

and S6, debugging the two sections of telescopic doors.

Further, the method comprises the steps of,

in the step S1, prefabricating a plurality of sections of reinforced concrete immersed tubes in a factory, and splicing the prefabricated immersed tubes at the bottom of a river mouth to form the base;

in step S2, manufacturing a door body frame and a cross brace of the telescopic door in a factory, splicing adjacent door body frames by adopting the cross brace, installing a running gear of the telescopic door on the corresponding door body frame, and assembling a single section of the telescopic door in the manner that the other section of the telescopic door is assembled;

in step S6, the expansion door is debugged, specifically: firstly, manually pushing and pulling the telescopic door, and checking whether the telescopic door operates normally or not; starting the traveling device under the condition that the operation of the telescopic door is normal, wherein the telescopic door can extend or retract to a set limit position under the driving of the traveling device; if the running limit of the telescopic door is found to be inaccurate in debugging, adjusting a limit part of the running gear; the debugging is carried out for more than 3 times, and all the components are put into use after being normal.

A working method of a buoyancy supporting telescopic large-span tide gate comprises the following working modes:

guan Mendang tide: when the tide is required to be blocked, firstly removing the sludge on the top surface of the base, and then enabling the telescopic doors on the two sides to extend out and butt joint to be closed so as to form a tide gate for blocking the river mouth;

opening the door for navigation: when no tide is needed, the telescopic doors at the two sides are contracted and respectively retracted to the corresponding door stores to open the doors.

Further, the method comprises the steps of,

the working mode is as follows: when tide is required to be blocked, a silt flushing water pump in the base gallery is started firstly, silt on the top surface of the base is removed, then a travelling device of the telescopic door is started, the telescopic doors on two sides extend out to be in butt joint under the driving of the travelling device to form a tide blocking gate for blocking a river mouth, the telescopic door is inclined to the river side by the water pressure of the water blocking side, and the buoyancy supporting component generates buoyancy to support the telescopic door so as to resist the overturning moment when the telescopic door blocks the tide;

the working mode is as follows: when no tide is required, the travelling device of the telescopic doors is started, and the telescopic doors at the two sides are contracted under the driving of the travelling device and respectively retreated to the corresponding door store to open the doors. The telescopic door is inclined to the inland river side under the water pressure of the water blocking side

Compared with the prior art, the invention has the beneficial effects that:

the invention relates to a buoyancy support telescopic large-span tide gate, which comprises a base which is arranged at the bottom of a river mouth and spans across the river mouth, wherein two ends of the base are respectively positioned at the bottoms of two banks of the river mouth, telescopic gate assemblies are symmetrically arranged on the top surfaces of the bases at two sides of the river mouth, each telescopic gate assembly comprises a frame type telescopic gate, the upstream side of each telescopic gate is a water blocking side, the downstream side of each telescopic gate is a inland side, the telescopic gate is connected with a buoyancy support assembly at the inland side, waterproof cloth is coated on the outer side of each telescopic gate, and the telescopic gates at the two sides extend out and are butted to close the gate to form the tide gate for blocking the river mouth; the tide blocking gate supports the telescopic door by utilizing the buoyancy generated by the buoyancy supporting component, resists the overturning moment of the telescopic door when the tide is blocked, is favorable for the integral stability of the telescopic door, further can effectively reduce the size of the telescopic door, and can greatly lighten the weight of the telescopic door, thereby reducing the opening and closing force of the telescopic door and shortening the opening and closing time.

In the invention, the base is formed by splicing a plurality of sections of factory prefabricated reinforced concrete immersed tubes, the telescopic door comprises a plurality of stainless steel door body frames which are identical in roof side to river side direction, and adjacent door body frames are connected through one or more layers of stainless steel cross supports, so that the base and the telescopic door can be manufactured in factories, only the immersed tubes and the telescopic door are required to be installed on site, no current interruption and navigation interruption are required, and the construction is convenient; because the door body frame is arranged from the water retaining side to the inland river side, the load transmission mode of the telescopic door can be changed, the traditional horizontal concentrated load transmission mode is changed into the vertical load transmission mode, and the load is transmitted to the base in a dispersed manner, so that the telescopic door is limited by the water retaining height and is not limited by the span of the gate hole, the stress at the two ends of the door body of the telescopic door is converted into the vertical stress, the door body is similar to a cantilever beam, and the stressed water pressure is transmitted to the base in a uniform distribution manner, so that the application span is unlimited, and the greater the width of the river channel, the more the superiority of the door can be shown.

In the invention, each layer of cross brace comprises two cross supporting rods, the middle parts of the two supporting rods are rotationally connected through a horizontal first rotating shaft, the bottom ends of the supporting rods are hinged to the lower parts of door body frames on corresponding sides through simple support hinges, the top ends of the supporting rods are rotationally connected with second rotating shafts, and the second rotating shafts are positioned in vertical sliding grooves on corresponding sides of the upper parts of adjacent door body frames and slide up and down along the sliding grooves; the telescopic door is of a hinged structure, has good structural performance, can resist the impact of earthquake, wave and the like, and can adapt to differential settlement of the foundation; the telescopic door is connected to form a whole by adopting simple hinges, and the arrangement of the simple hinges between the door body frames enables the door body frames to generate proper displacement in the vertical direction, can coordinate with foundation settlement and can adapt to temperature change, and the door body frames cannot move in the water flow direction, so that the whole of the single-section telescopic door can be ensured.

In the invention, the buoyancy support component comprises a plurality of same buoyancy support parts, one or more buoyancy support parts are arranged on each door body frame, each buoyancy support part comprises an arc rod with a downward arc center and a hollow sealing floating column, the arc rod is a steel pipe, the upper end of the arc rod is connected to the inland side of the door body frame, the lower end of the arc rod is connected to the top end of the floating column, and the diameter of the floating column is smaller than or equal to the distance between adjacent door body frames after the telescopic door is completely contracted; the telescopic door can generate lateral inclination deformation under the action of water pressure on the water retaining side, the larger the water pressure is, the larger the inclination deformation is, the larger the buoyancy generated by the floating column is, so that the larger the overturning resistance is, namely the larger the supporting of the telescopic door is, and the setting of the buoyancy supporting component enables the telescopic door to realize dynamic balance.

In the invention, the door body frame is divided into a single-layer type and a table-returning type according to the water depth of the water blocking side; the single-layer door body frame comprises a plurality of first upright posts which are arranged side by side from the water retaining side to the inland side direction and have the same height, and the first upright posts are sequentially connected through a plurality of first cross beams from bottom to top; the frame of the withdrawal type door body comprises a plurality of second upright posts which are arranged side by side from the water retaining side to the inland side direction and gradually increase in height, and the plurality of second upright posts are sequentially connected through a plurality of second cross beams from bottom to top; therefore, when the water depth of the water blocking side is larger than a certain value, the integral stability of the telescopic door can be improved by adopting the frame of the retractable door body.

The invention discloses a telescopic door, which comprises a water blocking side and a inland side, wherein the lower part of the telescopic door is symmetrically provided with positioning guide assemblies, the top surface of a base is respectively provided with guide rails matched with the positioning guide assemblies at the two sides, the bottom end of a door body frame is provided with a plurality of rollers, the positioning guide assemblies comprise a plurality of positioning guide pieces which are identical and have the same number as the door body frame, each positioning guide piece comprises a U-shaped reverse hook which is arranged at the corresponding side of the door body frame and is inwards opened, the guide rails are through-length channel steel with outwards notch and arranged along the telescopic direction of the telescopic door, the lower wall of each U-shaped reverse hook is clamped at the inner side of the upper wall of the channel steel at the corresponding side and horizontally slides along the upper wall of the channel steel, and a rubber pad is paved between the lower wall of the channel steel and the top surface of the base and is connected through bolts; because the water blocking side and the inland side of each door body frame are provided with the U-shaped reverse hooks, the telescopic door is smoothly opened and closed under the driving of the travelling device by utilizing the clamping positions and the guiding functions of the U-shaped reverse hooks, and the cantilever member channel steel on the top surface of the base is utilized to provide resistance for the stability of the telescopic door when water is blocked.

In the invention, the telescopic door assembly also comprises the reinforced concrete door store which is arranged at the corresponding side bank edge of the river mouth and is open at the top end, and the telescopic door is retracted into the corresponding door store after being contracted, so that the telescopic door can be lifted out from the top end of the door store for overhauling, and the door store has short length, is convenient to arrange and maintain, and can save a large amount of investment.

In the invention, the waterproof cloth is rubber waterproof cloth, the waterproof cloth is adhered to the door body frame, and the waterproof cloth is folded into a plurality of marks at equal distance towards the inner side of the telescopic door in the telescopic direction perpendicular to the telescopic door, so that the rubber waterproof cloth can be folded together in order when the telescopic door is contracted.

In the invention, the door body frame at the joint of two telescopic doors is a butt joint end door body frame, wherein a plurality of inserted bars are arranged at the outer side of one butt joint end door body frame, and a plurality of bolt holes respectively matched with the inserted bars are arranged at the outer side of the other butt joint end door body frame; thus, when the two telescopic doors extend out for butt joint, the two telescopic doors can be accurately butted.

Compared with the traditional tidal blocking gate with the same width, the tidal blocking gate has low manufacturing cost and can reduce investment by 40-70%.

Drawings

FIG. 1 is a plan view showing a water blocking state of a conventional gate in the background art;

FIG. 2 is a diagram of a conventional gate stress calculation in the background art (a represents a gate hole span, M represents a bending moment);

FIG. 3 is a schematic view of a sectional front view of a retractable door according to the present invention;

FIG. 4 is a schematic cross-sectional view of a single-layer door frame (F represents the buoyancy of a pontoon);

FIG. 5 is a schematic view of a sectional structure of a frame of a landing door body (F in the figure represents the buoyancy of a floating column);

FIG. 6 is an enlarged schematic view of a single section telescoping door assembled from a single layer door body frame;

FIG. 7 is a schematic view of a partially enlarged retractable door structure of a single section retractable door with a fixed axis door body frame;

FIG. 8 is an enlarged schematic view of the U-shaped reverse hook and channel connection;

FIG. 9 is a schematic diagram of a door store section and control tower;

FIG. 10 is a schematic view of the vertical force of a telescoping door to retain water;

FIG. 11 is a schematic diagram of bending moment of a force applied to a telescopic door (M represents bending moment in the figure).

The reference numerals in the drawings illustrate: 1. the door comprises a base, 2, a telescopic door, 3, a gallery, 4, a door body frame, 5, a cross brace, 6, a supporting rod, 7, a first rotating shaft, 8, a simple support hinge, 9, a second rotating shaft, 10, a sliding chute, 11, an arc-shaped rod, 12, a floating column, 13, a first upright post, 14, a first cross beam, 15, a second upright post, 16, a second cross beam, 17, a walking device, 18, a walking wheel, 19, a roller, 20, a U-shaped reverse hook, 21, a channel steel, 22, a rubber water stop, 23, a bolt, 24, a door warehouse, 25, a control tower, 26, a rubber waterproof cloth, 27, a plug rod, 28, a river mouth control line, 29, a water stop side highest water level, 30, a river design water level, 31, an end butt joint, 32, a door body frame of a door warehouse end, 33, an intermediate door body frame, 34, a butt joint end door body frame, 35, a fixed shaft door body frame, 36, a rubber water stop bar, 37, a gate pier, 38 and a gate.

Detailed Description

As shown in fig. 3-9, the buoyancy support telescopic large-span tidal gate comprises a base 1 which is arranged at the bottom of a river mouth and spans across the river mouth, two ends of the base 1 are respectively positioned at the bottoms of two sides of the river mouth, the base 1 is formed by splicing a plurality of sections of factory prefabricated reinforced concrete immersed tubes, a gallery 3 for maintenance is formed in the inner cavity of the base 1, the top surface of the base 1 is a plane and is provided with a plurality of silt water openings, a pipeline connected with each silt water opening is arranged in the gallery 3, a silt water pump is also arranged in the gallery 3, two sides of the top surface of the base 1 are symmetrically provided with telescopic doors 2, the upstream side of the telescopic doors 2 is a water blocking side, the downstream side is an inland side, the telescopic doors 2 are connected with buoyancy support components at the inland side, rubber waterproof cloth 26 is adhered to the outer side of the telescopic doors 2, and the telescopic doors 2 at the two sides of the river mouth extend out of a gate warehouse 24 and are butted to form the tidal gate for sealing the river mouth; the reinforced concrete door store 24 with an open top is arranged on the corresponding side bank of the river mouth, the telescopic door 2 is retracted into the corresponding door store 24, and the telescopic door 2 can be compressed to about 2/5 of the door length in an open state, so that the required door store 24 is shorter, the top size of the door store 24 meets the requirement that a single door body frame 4 is lifted out, rubber water stops are arranged on two sides of an outlet of the door store 24, and when the telescopic door 2 is retracted, the rubber water stops are played together with rubber waterproof cloth 26 bonded on the outer side of the telescopic door 2; the shoreside at both sides of the tidal barrier are also respectively provided with a reinforced concrete control tower 25 which is closely adjacent to the gate store 24, the bottom of the control tower 25 is communicated with the corridor 3, the reinforced concrete structure is arranged below the ground of the control tower 25, and the common house structure is arranged above the ground; wherein the total length of the immersed tube is the distance between two control towers 25, and spans the estuary and the gate store 24, and the section length of the immersed tube, the size of the prefabricated immersed tube, the size of the corridor 3 and the transportation and installation method are determined according to the estuary span and the construction condition; wherein the door store 24 and the control tower 25 are constructed without cofferdam, and can be constructed dry.

The telescopic door 2 comprises a plurality of stainless steel door body frames 4 which are identical and are arranged in the direction of the river side from the water retaining side, the door body frames 4 are used as stress main body members, adjacent door body frames 4 are connected through one or more stainless steel cross braces 5, each cross brace 5 comprises two cross supporting rods 6, the middle parts of the two supporting rods 6 are rotationally connected through a horizontal first rotating shaft 7, the bottom ends of the supporting rods 6 are hinged to the lower parts of the door body frames 4 at the corresponding sides through simple hinges 8, the top ends of the supporting rods 6 are rotationally connected with second rotating shafts 9, and the second rotating shafts 9 are positioned in vertical sliding grooves 10 at the corresponding sides of the upper parts of the adjacent door body frames 4 and slide up and down along the sliding grooves 10, and particularly shown in fig. 6; when the distance between the two door body frames 4 is large, and the integral rigidity of the telescopic door 2 and the strength of the rubber waterproof cloth 26 cannot meet the requirements, a door body frame can be additionally arranged at the first rotating shaft 7 of the cross brace 5 and is called a fixed shaft door body frame 35, and particularly, fig. 7 is shown. The door body frame 4 adjacent to the door store 24 is a door store end door body frame 32, the door body frame 4 at the joint of the two telescopic doors 2 is a joint end door body frame 34, the door body frame 4 between the door store end door body frame 32 and the joint end door body frame 34 is a middle door body frame 33, and rubber waterproof cloth 26 is arranged on the outer sides of the door store end door body frame 32 and the joint end door body frame 34.

Wherein, the door body frame 4 is divided into a single-layer type and a desk-withdrawal type according to the water depth of the water retaining side; as shown in fig. 4, the single-layer door body frame 4 comprises a plurality of first upright posts 13 which are arranged side by side from the water blocking side to the inland side direction and have the same height, and the plurality of first upright posts 13 are sequentially connected through a plurality of first cross beams 14 from bottom to top; as shown in fig. 5, the bench-type door body frame 4 comprises a plurality of second upright posts 15 which are arranged side by side from the water blocking side to the inland side direction and gradually increase in height, and the plurality of second upright posts 15 are sequentially connected through a plurality of second cross beams 16 from bottom to top; when the water depth of the water retaining side is less than 5m, the door body frames 4 are of a single layer type, the adjacent door body frames 4 are connected through a layer of cross braces 5, and the cross braces 5 are arranged on first upright posts 13 in the middle of the adjacent door body frames 4; when the water depth of the water retaining side is greater than 5m, the door body frames 4 are in a retreating type, the adjacent door body frames 4 are connected through the multi-layer cross braces 5, and the cross braces 5 of each layer are respectively arranged on the second upright posts 15 of the adjacent door body frames 4. The first upright 13, the first cross beam 14, the second upright 15 and the second cross beam 16 are all formed steel.

As shown in fig. 4 and fig. 5, the buoyancy support assembly includes a plurality of identical buoyancy support components, each door frame 4 is provided with one or more buoyancy support components, each buoyancy support component includes an arc rod 11 with a downward arc center and a hollow sealing floating column 12, the arc rod 11 is a steel pipe, when the door frame 4 is of a single-layer type, the upper end of the arc rod 11 is fixedly connected to the outer side of the top end of a first upright post 13 at the inland side of the door frame 4, the lower end is fixedly connected to the top end of the floating column 12, the diameter of the floating column 12 is smaller than or equal to the distance between adjacent door frames 4 after the telescopic door 2 is completely contracted, and at this time, if the buoyancy cannot meet the requirement, two buoyancy support components are arranged on each door frame 4; the overhanging length of the arc-shaped rod 11 and the buoyancy of the floating column 12 are in direct proportion to the overturning bending moment resistance, so that the length of the arc-shaped rod 11 and the size of the floating column 12 are reasonably and economically selected according to the wind wave size of a water area and the tide level of a design standard; the distance between the bottom end of the floating column 12 and the inland river static water level is related to the allowable inclination of the telescopic door 2, and generally, in the non-working state, the bottom end of the floating column 12 should be 20mm higher than the inland river static water level; the arc-shaped rod 11 is a circular arc-shaped member so that the buoyancy generated by the floating column 12 is axially transferred to the arc-shaped rod 11, and then the buoyancy is axially transferred to the door body frame 4 by the arc-shaped rod 11, and the strength and rigidity of the arc-shaped rod 11 are required to meet the structural requirement.

When the telescopic door 2 is short or the door body frame 4 is of a single layer type, the telescopic door 2 is driven to extend or retract by a travelling device 17, and the travelling device 17 is fixed at the middle part of the inner side of the door body frame 4 at the joint of the two telescopic doors 2; when the telescopic door 2 is longer or the door body frame 4 is of a table-withdrawing type, the telescopic door 2 is driven to extend or retract by two traveling devices 17, one traveling device 17 is fixed on the door body frame 4 in the middle of the telescopic door 2, and the other traveling device 17 is fixed in the middle of the inner side of the door body frame 4 at the joint of the two telescopic doors 2; the bottom end of the box body of the traveling device 17 is provided with a plurality of traveling wheels 18, two traveling rails for traveling of the traveling wheels 18 are embedded in the middle of the top surface of the base 1, and the traveling rails are I-shaped steel; the box body of the running gear 17 is internally provided with a motor, a controller and related electrical equipment, when the running gear 17 is selected, the requirement of driving force and opening and closing time is met so as to drive the telescopic door 2 to move in a telescopic way, the telescopic door 2 is required to be matched with the water retaining requirement of the telescopic door 2, the controller in the box body consists of a control box and a desk type controller, the control box is fixed in the box body and is used for receiving instructions sent by the desk type controller and controlling the telescopic door 2 to operate, and the desk type controller is mainly used by operators on duty in a duty room of the control tower 25.

The lower part of the telescopic door 2 is respectively provided with a positioning guide component at the water blocking side and the inland side, the top surface of the base 1 is respectively provided with a guide rail matched with the two positioning guide components, the bottom end of the door body frame 4 is provided with a plurality of rollers 19, the positioning guide components comprise a plurality of positioning guide pieces which are identical and have the same number as the door body frame 4, each positioning guide piece comprises a U-shaped reverse hook 20 welded at the corresponding side of the door body frame 4 and provided with an inward opening, the guide rail is a through long groove steel 21 with a notch outwards and arranged along the telescopic direction of the telescopic door 2, the lower wall of the U-shaped reverse hook 20 is clamped at the inner side of the upper wall of the channel steel 21 at the corresponding side and horizontally slides along the upper wall of the channel steel 21, the inner side of the upper wall of the channel steel 21 is provided with a through long rubber water stop 36, a rubber water stop 22 is arranged between the lower wall of the channel steel 21 and the top surface of the base 1 and is connected by bolts 23, and the outer side of the U-shaped reverse hook 20 is provided with a rubber waterproof cloth 26, as shown in fig. 8; the U-shaped reverse hook 20 is connected with the door body frame 4 into a whole, the U-shaped reverse hook 20 has clamping and guiding functions, and the cantilever member channel steel 21 on the top surface of the base 1 is utilized to provide resistance for the stability of the telescopic door 2 when water is blocked.

The rubber waterproof cloth 26 is adhered to the door body frame 4, the rubber waterproof cloth 26 is folded into a plurality of marks towards the inner side of the telescopic door 2 at equal distance in the telescopic direction of the telescopic door 2, when the telescopic door 2 is convenient to shrink, the rubber waterproof cloth 26 can be orderly folded together, when the water retaining height of the telescopic door 2 is large, if the strength of the rubber waterproof cloth 26 cannot meet the design requirement, the rubber waterproof cloth 26 can be vertically and transversely reinforced so as to improve the strength of the rubber waterproof cloth 26, and the reinforced material is preferably the same material as the rubber waterproof cloth 26; the outer side of the butt joint end door body frame 34 of the one side telescopic door 2 is provided with a plurality of inserted bars 27, and the outer side of the butt joint end door body frame 34 of the other side telescopic door 2 is provided with a plurality of inserted pin holes respectively matched with the inserted bars 27, so that the two telescopic doors 2 can be accurately butted when being stretched out and butted.

A construction method of a buoyancy-supported telescopic large-span tide gate comprises the following steps:

s1, prefabricating a plurality of sections of reinforced concrete immersed tubes in a factory, and splicing the prefabricated immersed tubes at the bottom of a river mouth to form a base 1;

s2, manufacturing a door body frame 4 and a cross brace 5 in a factory, splicing adjacent door body frames 4 by adopting the cross brace 5, installing a running gear 17 on the corresponding door body frame 4, and assembling a single-section telescopic door 2, and in this way, assembling another section of telescopic door 2;

s3, enabling the two sections of telescopic doors 2 to extend out to a maximum length state, respectively coating rubber waterproof cloth 26 on the outer sides of the two sections of telescopic doors 2, and respectively connecting two sets of buoyancy support components at the first upright post 13 or the second upright post 15 on the inland side of the two sections of telescopic doors 2;

s4, enabling the two sections of telescopic doors 2 to be contracted to the shortest length state, and conveying to a river mouth site;

s5, respectively installing two sections of telescopic doors 2 on the top surfaces of the base 1 on two sides of the estuary;

s6, debugging the telescopic door 2, specifically: firstly, manually pushing and pulling the telescopic door 2, and checking whether the telescopic door 2 operates normally or not; under the condition that the telescopic door 2 is determined to run normally, the power supply of the running gear 17 is switched on, the controller power supply indicator lamp of the running gear 17 is on, the on button is pressed, the on indicator lamp is on, the telescopic door 2 can automatically extend to the set limit position and automatically stop under the driving of the running gear 17, the off button is pressed, the off indicator lamp is on, and the telescopic door 2 can automatically retract to the set limit position and automatically stop under the driving of the running gear 17; if the running limit of the telescopic door 2 is found to be inaccurate in debugging, a limit switch in a controller of the running gear 17 is adjusted; the debugging is carried out for more than 3 times, and all the components are put into use after being normal.

A working method of a buoyancy supporting telescopic large-span tide gate comprises the following working modes:

(1) Guan Mendang tide: when the tide is required to be blocked, a silt flushing water pump is started firstly, silt on the top surface of the base 1 is removed, then a motor of the travelling device 17 is started, an instruction is given to a controller, the telescopic doors 2 on two sides extend out and are in butt joint under the drive of the travelling device 17 to close the door, so that a tide blocking gate for blocking a river mouth is formed, particularly when the travelling device 17 starts to operate, the first cross brace 5 is gradually opened, the first door body frame 4 is driven to move, and meanwhile, the connected cross brace 5 is driven to open, so that the second door body frame 4 is driven to move, the whole telescopic door 2 is opened in a circulating manner, when the travelling device 17 travels to a butt joint position which is generally the middle position of a river channel, the telescopic door 2 on the other side is in butt joint, a plug pin butt joint piece completes the plug-joint action, the motor stops operating, the telescopic door 2 is in position and is locked, and the door closing time is generally controlled within 30 min; when the telescopic door 2 is closed to stop tide, the telescopic door 2 is inclined to the inland river side under the water pressure of the water blocking side, the floating column 12 is immersed in water to generate buoyancy, the arc-shaped rod 11 generates supporting force on the telescopic door 2, and overturning moment when the telescopic door 2 stops tide is resisted;

(2) Door opening navigation and maintenance and overhaul: when no tide is required, a motor of the travelling device 17 is started to give a backward instruction to the controller, the telescopic doors 2 on two sides are contracted and separated to open the door under the driving of the travelling device 17, specifically, the telescopic doors 2 drive the cross braces 5 under the driving of the travelling device 17, the cross braces 5 transmit thrust and push the door body frame 4, the cycle is performed, the telescopic doors 2 are gradually contracted and are retreated into the door store 24 to stop for positioning, and the door opening time is controlled within 20min generally; the retractable door 2 is in an idle state most of the time, the retractable door 2 is stored in the door store 24, and at this time, overhauling and maintenance of the retractable door 2 and equipment can be performed.

The steel panel of the traditional gate has large weight, the invention adopts the high-strength rubber waterproof cloth 26 as the panel of the telescopic gate 2, uses cloth instead of steel, does not rust and is maintenance-free, the rubber waterproof cloth 26 can be completely recycled according to the service life, the pollution of wastes to the environment is reduced, and the panel of the rubber waterproof cloth 26 has high strength, strong toughness, impact resistance, strong elasticity, difficult deformation, smooth and clean surface, light weight and convenient transportation and installation.

In the invention, the frame of the door body with the back-up table is adopted above the designed water level, the platform is used for bearing water, the higher the water level is, the larger the generated horizontal thrust is, but the higher the water weight of the top surface of the back-up table is, the more the stability of the door body is increased, and the size of the door body is effectively reduced.

The load transmission mode of the telescopic door 2 adopts vertical transmission to transmit the load to the foundation in a dispersed manner, so that the stress state of the span and the door type is changed, and the load is particularly shown in figures 10-11.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims (13)

1. A scalable large-span of buoyancy support keeps off tide gate, its characterized in that: including setting up in the estuary bottom and crossing base (1) of estuary, base (1) both ends are located estuary both sides bottom respectively, base (1) top surface bilateral symmetry is equipped with flexible door (2), flexible door (2) upstream side is the manger plate side, and the downstream side is the inland river side, flexible door (2) are connected buoyancy supporting component in inland river side department, flexible door (2) outside cladding has waterproof cloth, both sides flexible door (2) stretch out the butt joint in order to close the door, forms the tidal blocking floodgate of shutoff estuary.

2. The buoyancy-supported telescopic large-span tidal gate according to claim 1, wherein: the base (1) is formed by splicing reinforced concrete immersed tubes prefabricated in a multi-section factory, a gallery (3) for overhauling and maintaining is formed in an inner cavity of the base (1), the top surface of the base (1) is a plane and is provided with a plurality of dredging water ports, a pipeline connected with each dredging water port is arranged in the gallery (3), and a dredging water pump is further arranged in the gallery (3).

3. The buoyancy-supported telescopic large-span tidal gate according to claim 1, wherein: the telescopic door (2) comprises a plurality of door body frames (4) which are identical and are arranged in the direction of the river side from the water retaining side, the adjacent door body frames (4) are connected through one layer or a plurality of layers of cross braces (5), each layer of cross braces (5) comprises two cross support rods (6) which are arranged in a crossing mode, the middle parts of the two support rods (6) are rotationally connected through a horizontal first rotating shaft (7), the bottom ends of the support rods (6) are hinged to the lower parts of the door body frames (4) on the corresponding sides through simple hinges (8), the top ends of the support rods (6) are rotationally connected with second rotating shafts (9), and the second rotating shafts (9) are located adjacent in vertical sliding grooves (10) on the corresponding sides on the upper parts of the door body frames (4) and slide up and down along the sliding grooves (10).

4. A buoyancy-supported telescopic large-span tidal gate according to claim 3, wherein: the buoyancy support component comprises a plurality of same buoyancy support components, one or more buoyancy support components are arranged on each door body frame (4), each buoyancy support component comprises an arc rod (11) with a downward arc center and a hollow sealing floating column (12), the upper ends of the arc rods (11) are connected to the inland side of the door body frame (4), the lower ends of the arc rods are connected to the top ends of the floating columns (12), and the diameters of the floating columns (12) are smaller than or equal to the distance between every two adjacent door body frames (4) after the telescopic door (2) is completely contracted.

5. A buoyancy-supported telescopic large-span tidal gate according to claim 3, wherein: the door body frame (4) is divided into a single-layer type and a desk-withdrawal type according to the water depth of the water retaining side; the single-layer door body frame comprises a plurality of first upright posts (13) which are arranged side by side from the water retaining side to the inland side direction and have the same height, and the first upright posts (13) are connected through a plurality of first cross beams (14) from bottom to top in sequence; the frame of the desk-back type door body comprises a plurality of second upright posts (15) which are arranged side by side from the water retaining side to the inland side direction and gradually increase in height, and the second upright posts (15) are connected through a plurality of second cross beams (16) from bottom to top in sequence.

6. A buoyancy-supported telescopic large-span tidal gate according to claim 3, wherein: the telescopic door (2) is driven to extend or retract by a travelling device (17), the travelling device (17) is arranged between adjacent door body frames (4) and is fixedly connected with one of the door body frames (4), a plurality of travelling wheels (18) are arranged at the bottom end of the travelling device (17), and a travelling rail for travelling by the travelling wheels (18) is arranged on the top surface of the base (1); the telescopic door is characterized in that positioning guide assemblies are symmetrically arranged at the lower portion of the telescopic door (2) at the water retaining side and the inland side, guide rails matched with the positioning guide assemblies on the two sides are respectively arranged on the top surface of the base (1), and a plurality of rollers (19) are arranged at the bottom end of the door body frame (4).

7. The buoyancy supported telescopic large-span tidal gate of claim 6, wherein: the positioning guide assembly comprises a plurality of positioning guide pieces which are identical and are identical to the door body frames (4) in number, the positioning guide pieces comprise U-shaped reverse hooks (20) which are arranged on the corresponding sides of the door body frames (4) and are inward in openings, the guide rails are through-length channel steel (21) which are outwards arranged in the telescopic direction of the telescopic door (2), the lower wall of each U-shaped reverse hook (20) is clamped on the inner side of the upper wall of each channel steel (21) on the corresponding side and horizontally slides along the upper wall of each channel steel (21), and rubber water stops (22) are arranged between the lower wall of each channel steel (21) and the top surface of the base (1) and are connected through bolts (23).

8. A buoyancy-supported telescopic large-span tidal gate according to claim 2, wherein: the corresponding side bank of river mouth is equipped with open-top door storehouse (24), flexible door (2) shrink back is corresponding in door storehouse (24), the bank of keeping off the tide floodgate both sides still has arranged respectively and has closely adjacent control tower (25) of door storehouse (24), control tower (25) bottom with corridor (3) intercommunication.

9. A buoyancy-supported telescopic large-span tidal gate according to claim 3, wherein: the waterproof cloth is rubber waterproof cloth (26), the waterproof cloth is adhered to the door body frame (4), and the waterproof cloth is folded in half to the inner side of the telescopic door (2) at equal distance in the telescopic direction perpendicular to the telescopic door (2) to form a plurality of marks; the door body frame (4) of telescopic door (2) butt joint department is butt joint end door body frame (4), one of them butt joint end door body frame (4) outside is equipped with a plurality of inserted bars (27), another butt joint end door body frame (4) outside be equipped with a plurality of respectively with inserted bar (27) looks adaptation bolt hole.

10. A method of constructing a buoyancy-supported telescopic large-span tidal barrier according to any one of claims 1 to 9, comprising the steps of:

s1, arranging the base (1) at the bottom of a river mouth;

s2, manufacturing two sections of frame type telescopic doors (2) in a factory;

s3, enabling the two sections of the telescopic doors (2) to extend out to a maximum length state, respectively coating waterproof cloth on the outer sides of the two sections of the telescopic doors (2), and respectively connecting the two sets of buoyancy support components at inland river sides of the two sections of the telescopic doors (2);

s4, enabling the two sections of the telescopic doors (2) to be contracted to the shortest length state, and conveying to a river mouth site;

s5, respectively installing two sections of telescopic doors (2) on the top surfaces of the bases (1) on two sides of a river mouth;

s6, debugging the two sections of the telescopic doors (2).

11. The method for constructing the buoyancy-supported telescopic large-span tidal barrier according to claim 10, wherein the method comprises the following steps:

in the step S1, prefabricating a plurality of sections of reinforced concrete immersed tubes in a factory, and splicing the prefabricated immersed tubes at the bottom of a river mouth to form the base (1);

in the step S2, a door body frame (4) and a cross brace (5) of the telescopic door (2) are manufactured in a factory, the adjacent door body frames (4) are spliced by adopting the cross brace (5), a running gear (17) of the telescopic door (2) is arranged on the corresponding door body frame (4), a single section of the telescopic door (2) is assembled, and in this way, the other section of the telescopic door (2) is assembled;

in step S6, the expansion door (2) is debugged, specifically: firstly, manually pushing and pulling the telescopic door (2), and checking whether the telescopic door (2) operates normally or not; starting a traveling device (17) under the condition that the telescopic door (2) is determined to run normally, wherein the telescopic door (2) can extend or retract to a set limit under the driving of the traveling device (17); if the running limit of the telescopic door (2) is found to be inaccurate in debugging, adjusting a limit part of the running gear (17); the debugging is carried out for more than 3 times, and all the components are put into use after being normal.

12. A method of operating a buoyancy-supported telescopic large-span tidal barrier according to any one of claims 1 to 9, comprising the following modes of operation:

(1) Guan Mendang tide: when the tide is required to be blocked, firstly removing the sludge on the top surface of the base (1), and then enabling the telescopic doors (2) on the two sides to extend out for butt joint to be closed so as to form a tide blocking gate for blocking the river mouth;

(2) Opening the door for navigation: when no tide is required, the telescopic doors (2) on the two sides are contracted and respectively retreated to the corresponding door stores (24) to open the doors.

13. The method of operating a buoyancy-supported telescopic large-span tidal barrier of claim 12, wherein:

in the working mode (1): when tide is required to be blocked, a flushing water pump in a gallery (3) of the base (1) is started firstly, sludge on the top surface of the base (1) is removed, a travelling device (17) of the telescopic door (2) is started again, the telescopic doors (2) on two sides extend out to be in butt joint under the driving of the travelling device (17) to form a tide blocking gate for blocking a river mouth, the telescopic door (2) is subjected to inclined deformation towards the inland river side by the water pressure of the water blocking side, and the buoyancy support component generates buoyancy to support the telescopic door (2) and resists the overturning moment when the telescopic door (2) blocks the tide;

in the working mode (2): when no tide is required, the travelling device (17) of the telescopic door (2) is started, and the telescopic doors (2) at two sides are contracted under the driving of the travelling device (17) and respectively retreated to the corresponding door store (24) to open the door.