JP2012092567A - Cut-off door, sluiceway, sluice pipe, and sluice gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cut-off door with excellent durability (weather and corrosion resistance) and a sluiceway, a sluice pipe, and a sluice gate having the cut-off door.SOLUTION: There is provided: a cut-off door that includes a concrete panel, a first fiber-reinforced resin complex layer for coating at least a part of one surface side of the concrete panel, and a second fiber-reinforced resin complex layer for coating at least a part of the other surface side of the concrete panel; and a sluice structure having the cut-off door.

Description

  The present invention relates to a water stop door, and a lock gate, a lock pipe, and a water gate provided with the water stop door.

  In a drainage channel provided for flowing river water, irrigation canal water, paddy field water, etc. provided to use river water, a lock gate and a sluice pipe are provided at a junction with the river. Xiamen and Xiamen are water control facilities provided so that water can be transferred from one river or waterway to another river or waterway. Xiamen and culverts are provided for underdrains in river banks. During normal times, that is, when draining water that flows through tributaries in the embankment, rainwater, or paddy fields into a river (Honagawa), the water from the embankment to the main river is connected via a water channel that connects the main river and the embankment. And water is flowing. However, when the water level of the main river becomes high, the water of the main river flows into the inland side through the water channel, and the water may overflow on the inland side. For this reason, a lock gate or a lock pipe is installed in the waterway, and the gate (water stop door) is normally opened, and can be quickly closed when the main river is flooded.

  The technique regarding such a water stop door is disclosed by patent document 1, for example. In Patent Document 1, the door body provided on the river side entrance / exit side of the lock gate or culvert pipe provided across the river embankment is raised and lowered, and the left and right sides of the door body are guided to be lifted and opened upward. There is disclosed a technique related to a gate device in which a pair of side columns is provided on a slope of a river bank and a door lifting mechanism is provided on the side column side.

JP 2001-55723 A

  Conventional water stop doors are mainly made of steel or stainless steel. Of these, steel ones with low installation costs are preferred, and most of the existing water stop doors are made of steel. However, the steel waterproof door has a problem in durability (corrosion resistance). Although steel anti-corrosion coating is applied to the water-proof doors, the coating deteriorates over time, and repairs are required depending on the degree of deterioration. That is, although the initial cost of a steel water stop door is low, there is a problem in durability (corrosion resistance), and therefore it is not cheap considering repair costs and life. Many of the existing steel water stop doors are aging, and it is very expensive to repair all the water stop doors. Even if they are repaired, it will be necessary to repair them again over time in the near future.

  Then, this invention makes it a subject to provide the water stop door excellent in durability (a weather resistance, corrosion resistance), the lock gate provided with this water stop door, a soot pipe, and a water gate.

  The present invention will be described below. In addition, in order to make an understanding of this invention easy, the reference sign of an accompanying drawing is attached in brackets, However, This invention is not limited to the form of drawing.

  The first aspect of the present invention is a concrete panel (1), a first fiber reinforced resin composite layer (2a) covering at least a part of one surface side of the concrete panel, and the other surface side of the concrete panel. By providing a water stop door (10) having a second fiber reinforced resin composite layer (2b) covering at least a part of the above, the above-mentioned problems are solved.

  In the present invention, the “waterproof door” means a gate that can appropriately adjust or block the flow of water flowing through a river or waterway. That is, the “waterproof door” is a concept including a gate provided in a lock gate or a sluice and a gate provided in a water gate.

  Moreover, in the water stop door (10) of 1st this invention, a 1st fiber reinforced resin composite layer (2a) and / or a 2nd fiber reinforced resin composite layer (2b) are from CFRP (Carbon fiber reinforced plastics). It is preferable to become. This is because CFRP is excellent in weather resistance, fatigue resistance, heat resistance and chemical resistance.

  Furthermore, in the water stop door (10) of 1st this invention, it is preferable that the surface is covered with the coating layer (3). By setting it as this form, while improving the landscape property of a water stop door, the surface of a water stop door can be protected.

  2nd this invention solves the said subject by providing the water control structure provided with the water stop door (10) of the said 1st this invention. In the present invention, the “water control structure” means a structure used for controlling the flow of water. Specific examples of the water control structure include locks, locks, and locks.

  According to 1st this invention, the water stop door excellent in durability (a weather resistance, corrosion resistance) can be provided. In addition, according to the second aspect of the present invention, it is possible to provide a lock gate, a lock pipe, and a sluice gate provided with a water stop door excellent in durability (weather resistance, corrosion resistance). In particular, when the first fiber reinforced resin composite layer and the second fiber reinforced resin composite layer are made of CFRP, a water stop door having excellent weather resistance, fatigue resistance, heat resistance, chemical resistance, etc., Xiamen, Cans and sluices can be provided. Moreover, when the surface is covered with a coating layer, in addition to the above weather resistance and the like, the landscape of the still water door can be improved.

(A) is the figure which showed roughly the example in which the water stop door of this invention concerning one embodiment was provided in the lock gate. (B) is the schematic which looked at the water stop door shown to (a) and its peripheral part from the Honkawa side. (C) is the figure which showed roughly a part of cross section in Ic-Ic shown to (b). It is the figure which showed schematically the horizontal cross section of the water stop door shown in FIG. (A)-(e) is the figure which showed schematically the example of the form of the 1st fiber reinforced resin composite layer and the 2nd fiber reinforced resin composite layer with which the water stop door of this invention is equipped, respectively.

  The above-mentioned operation and effect of the present invention will be clarified from the embodiments for carrying out the invention described below. Hereinafter, the present invention will be described based on embodiments shown in the drawings. However, the present invention is not limited to these embodiments.

  FIG. 1A is a diagram schematically showing an example in which a water stop door 10 of the present invention according to one embodiment is provided in a lock 20. FIG.1 (b) is the schematic which looked at the water stop door 10 shown to Fig.1 (a) and its peripheral part from the main river 40 side. FIG.1 (c) is the figure which showed roughly a part of cross section in Ic-Ic shown in FIG.1 (b). In FIG. 1C, the upper side of the paper is the main river 40 side, and the lower side of the paper is the tributary 30 side. FIG. 2 is a diagram schematically showing a horizontal cross section of the water stop door 10 shown in FIG. 1.

  As shown in FIG. 1, the lock 20 includes a flow path 21 connecting concrete boxes provided in the dike 50, concrete chest walls 22, 22 provided at both ends of the flow path 21, and And wing walls 23, 23. The Xiamen 20 is provided so as to pass the waterway (branch river) 30 and the river (main river) 40 on the outside of the bank, and the water stop door of the present invention is provided at the entrance / exit of the flow channel 21 on the main river 40 side. 10 is provided. The water stop door 10 is normally opened, and is closed to prevent a back flow from the main river 40 to the tributary 30 when the main river 40 is flooded.

  The water stop door 10 is supported by a pair of door stops 11a, 11a, and is capable of moving in the vertical direction while suppressing horizontal movement. The door stoppers 11a and 11a have grooves on opposing surfaces, and have a substantially U-shaped cross section as shown in FIG. Since the side portion of the water stop door 10 is fitted in the groove, the water stop door 10 is prevented from moving in the horizontal direction and is movable in the vertical direction. The water stop door 10 can be slid (moved up and down) while receiving a hydraulic load from the main river 40 side.

  Watertight rubbers 12 and 12 are provided on the surface of the side of the water stop door 10 (the portion fitted in the groove) on the side of the tributary 30, and stainless steel is provided on the portion of the door stop 11 a and 11 a that contacts the watertight rubber 12 and 12. Steel doors 13 and 13 are provided. The watertight rubbers 12 and 12 and the metal doors 13 and 13 extend in the back / near direction of FIG. In the closed position of the water stop door 10, when the water stop door 10 receives pressure from the main river 40 side, the watertight rubber 12, 12 and the door-to-door hardware 13, 13 come into close contact with each other. Water leakage to 30 can be prevented. Moreover, in order to prevent watertight rubber | gum 12 and 12 and the metal fittings 13 and 13 for doors separating and watertightness being lost, the surface of the side of the water stop door 10 by the side of the main river 40 and the door stops 11a and 11a It is preferable that watertight holding hardware 12a, 12a is provided between them.

  From the standpoint of preventing water leakage from the main river 40 to the tributaries 30, the allowable deflection of the water stop door 10 is preferably 1/800 or less. “Deflection” refers to the amount of deflection of the water stop door against the water pressure and the load in the same direction divided by the length of the span. The dam / weir facility technology association “Suimon / Xiamen Gate Design” The guidelines (draft) issued in December 2001 ”. The degree of deflection is limited in consideration of the rigidity necessary for the structure, dynamic stability, safety during operation, and water tightness. If the degree of deflection of the water stop door 10 is large when the water stop door 10 receives water pressure, a gap is generated between the side of the water stop door 10 and the door stops 11a and 11a or at the bottom of the water stop door 10. The necessary water tightness may be hindered. Further, when the degree of deflection of the water stop door 10 increases, there is a possibility that safety during operation of the water stop door 10 cannot be ensured. For this reason, it is preferable to define the “allowable deflection” so that the water stop door 10 has a minimum degree of rigidity. For water stop doors provided in conventional dams, weirs, sluices, locks, etc., the allowable deflection is normally defined as 1/800 or less.

One end of a rack bar 14 is connected to the water stop door 10, and the other end of the rack bar 14 is connected to a hoisting machine 16 installed on the operation table 15. The opening / closing operation of the water stop door 10 can be performed by operating the hoisting machine 16. The hoisting machine 16 may be directly operated by a person across the management bridge 18 provided with the protective fence 17 from the embankment 50, or may be remotely operated. The hoisting machine 16 may be operated by human power or may be operated by an electric motor. If the door area of the water stop door 10 (area of the surface of the main river 40 side or the branch river 30 side) is about 2 m ² or less, it is usually possible to open and close the water stop door 10 by human power. When larger than that, it is preferable to use an electric motor. In addition, the magnitude | size of the water stop door of this invention is although it does not specifically limit, It can use suitably for the lock gate, a lock pipe, or a sluice whose door area becomes 5 m < ² > or less.

  Next, the structure of the water stop door 10 is demonstrated, referring FIG. As shown in FIG. 2, the water stop door 10 includes a concrete panel 1, a first fiber reinforced resin composite layer 2 a covering at least a part of one surface side of the concrete panel 1, and the other side of the concrete panel 1. And a second fiber reinforced resin composite layer 2 b covering at least a part of the surface side, and the surface is covered with the coating layer 3.

  The concrete panel 1 is a plate-like member made of concrete, and is preferably made of unreinforced concrete. By constituting the concrete panel 1 with unreinforced concrete, deterioration due to corrosion of the steel material is eliminated. The kind of concrete which comprises the concrete panel 1 is not specifically limited, A normal concrete, a lightweight concrete, etc. can be used.

  When water pressure acts on the water stop door 10 from the main river 40, the pressure is borne by the concrete panel 1 and the force can be transmitted to the door-to-door hardware 13 and 13. Moreover, although the rack bar 14 is connected to the water stop door 10 as described above, the concrete panel 1 can bear the concentrated load at the portion where the rack bar 14 is connected.

  The thickness of the concrete panel 1 is appropriately determined according to the water pressure assumed to be received by the water blocking door 10. When the thickness of the concrete panel 1 is reduced, the strength of the water stop door 10 is not sufficiently developed. Conversely, when the thickness is increased, the mass of the water stop door 10 is increased and the cost is increased.

  First fiber reinforced resin composite layer 2a and second fiber reinforced resin composite layer 2b (hereinafter referred to as "first fiber reinforced resin composite layer 2a and second fiber reinforced resin composite layer 2b" Each of the layers 2a and 2b "covers at least a part of the concrete panel 1. Each of the fiber reinforced resin composite layers 2a and 2b may directly cover the concrete panel 1, or may cover the concrete panel 1 through another layer such as an adhesive layer containing an adhesive. The fiber reinforced resin composite layers 2 a and 2 b can bear bending stress and deflection due to water pressure applied to the water blocking door 10.

  The fiber reinforced resin composite layers 2a and 2b are made of a fiber reinforced resin composite containing fibers and a thermosetting resin.

  The type of fiber contained in the fiber reinforced resin composite is not particularly limited. For example, polyacrylonitrile-based carbon fiber, rayon-based carbon fiber, lignin-based carbon fiber, pitch-based carbon fiber, vapor-grown carbon fiber, carbon nanotube, Glass fiber, silicon carbide fiber, silicon nitride fiber, alumina fiber, silicon carbide fiber, boron fiber, aluminum fiber, brass fiber, stainless steel fiber and other inorganic fibers, aromatic polyamide fiber, polyaramid fiber, polyparaphenylene benzobis Examples thereof include organic fibers such as oxazole (PBO) fiber, polyphenylene sulfide fiber, polyester fiber, acrylic fiber, nylon fiber, and polyethylene fiber. Among these, carbon fiber is preferable because it is lightweight and has high mechanical strength. These fibers may be used alone or in combination of two or more.

  Examples of the thermosetting resin contained in the fiber reinforced resin composite include resins such as unsaturated polyester, vinyl ester, epoxy, phenol (resole type), urea melamine, polyimide, bismaleimide, and cyanate ester. , Copolymers of these resins, modified products, and resins obtained by mixing two or more of these resins. In view of strength and hardness, an epoxy resin is preferably used.

A preferred example of the fiber reinforced resin composite constituting the fiber reinforced resin composite layers 2a and 2b is CFRP (for example, high elasticity CFRP (trade name: e-plate) manufactured by Mitsubishi Plastics, Inc.). This is because CFRP is excellent in weather resistance, fatigue resistance, heat resistance and chemical resistance. Usually, the weight of the highly elastic CFRP is 100 g / m or more and 1100 g / m or less, preferably 150 g / m or more and 800 g / m or less, more preferably 180 g / m or more and 500 g / m or less, and the width is 50 mm or more and 150 mm or less. Is designed to be 100 cm or more and 500 cm or less. The tensile strength of the high modulus CFRP is usually, 1000 N / mm ² or more 5000N / mm ² or less, preferably 1200 N / mm ² or more 4000 N / mm ² or less. Furthermore, the Young's modulus of the high elastic CFRP is usually, 250 kN / mm ² or more 500 kN / mm ² or less, preferably 300 kN / mm ² or more 500 kN / mm ² or less, more preferably 350 kN / mm ² or more 450kN / mm ² or less is there.

  The fiber reinforced resin composite layers 2a and 2b may be made of similar fiber reinforced resin composites, or may be made of different fiber reinforced resin composites.

  The thickness of the fiber reinforced resin composite layers 2a and 2b is not particularly limited. In the case of forming from a fiber reinforced resin composite in which fibers and a thermosetting resin are combined and integrated, for example, 1 mm to 10 mm is preferable, and 2 mm to 4 mm is more preferable. When the thickness of the fiber reinforced resin composite layers 2a and 2b is reduced, the strength of the water stop door 10 is not sufficiently developed. On the contrary, when the thickness is increased, the cost of the water stop door 10 is increased.

  The amount of fiber reinforced resin composite layer 2a, 2b covering concrete panel 1 (amount to be applied), that is, the area where fiber reinforced resin composite layer 2a, 2b covers concrete panel 1 and fiber reinforced resin composite layer 2a, 2b The thickness of is appropriately determined according to the hydraulic load and the like acting on the water stop door 10, and the amount of the first fiber reinforced resin composite layer 2a and the amount of the second fiber reinforced resin composite layer 2b are: May be different. An example of the form of the fiber reinforced resin composite layers 2a and 2b is shown in FIG. FIGS. 3A to 3E are diagrams schematically showing examples of fiber reinforced resin composite layers 2a and 2b provided in the water blocking door 10, respectively. 3A to 3E, the left diagram is the water stop door 10 viewed from the main river 40 side, and the right diagram is the water stop door 10 viewed from the tributary 30 side. In addition, the coating layer 3 is abbreviate | omitted in Fig.3 (a)-(e).

  Fig.3 (a) has illustrated the form with which the whole both surfaces of the concrete panel 1 were covered with the fiber reinforced resin composite layer 2a, 2b. In FIG. 3B, the surface on the side of the tributary 30 of the concrete panel 1 is entirely covered with the second fiber reinforced resin composite layer 2b, and the surface on the side of the main river 40 is covered with the first fiber reinforced resin composite layer. The form which 2a is formed in the grid | lattice form is illustrated. FIG. 3C illustrates a form in which lattice-like fiber reinforced resin composite layers 2 a and 2 b are formed on both surfaces of the concrete panel 1. In FIG. 3D, the second fiber reinforced resin composite layer 2b is formed in a lattice shape on the surface of the concrete panel 1 on the side of the tributary 30, and the first fiber reinforced resin composite layer is formed on the surface on the side of the main river 40. The form in which the body layer 2a is formed in a horizontal stripe (a stripe in a direction substantially parallel to the water surface) is illustrated. FIG. 3E illustrates a form in which horizontal stripe-like fiber reinforced resin composite layers 2 a and 2 b are formed on both surfaces of the concrete panel 1.

  The interval between the lattices and the horizontal stripes is not particularly limited, and can be, for example, about 10 cm to 50 cm. Moreover, the width | variety of the fiber reinforced resin composite layer 2a, 2b which comprises the said grid | lattice or a horizontal stripe is not specifically limited, For example, it can be set as 5 cm or more and about 50 cm or less. In any form, the water stop door 10 is not covered with the fiber reinforced resin composite except the surface on the main river 40 side and the surface on the tributary 30 side.

  The method for laminating the fiber reinforced resin composite layers 2a and 2b on the concrete panel 1 is not particularly limited. For example, the fiber reinforced resin composite layers 2a and 2b can be laminated on the concrete panel 1 through an adhesive layer including an adhesive made of various thermosetting resins. When using high elastic CFRP as the fiber reinforced resin composite layers 2a and 2b, it is preferable to use a paste adhesive made of an epoxy resin similar to the matrix of the high elastic CFRP. By using such an adhesive, the ground treatment can be reduced and a strong adhesive force can be obtained. Furthermore, since there is no problem of dripping or the like, the workability can be improved and the labor of curing can be saved.

  Next, the coating layer 3 will be described. The coating layer 3 is a layer painted on the surface of the water stop door 10. By providing the coating layer 3, the landscape of the water stop door 10 can be improved and the surface of the water stop door 10 can be protected. However, even if the coating layer 3 is damaged and the concrete panel 1 and the fiber reinforced resin composite layers 2a and 2b are exposed, the durability of the water stop door 10 is not impaired.

  As what comprises the coating layer 3, an epoxy resin, an acrylic urethane resin, a fluororesin, a polyurethane resin, a silicon resin etc. can be mentioned, for example. The coating layer 3 can be formed by performing roller finishing, wiping coating, brush coating finishing, or the like using these resins.

  The water stop door of the present invention is made of concrete, fiber reinforced resin composite, or the like, and is excellent in weather resistance and corrosion resistance. Therefore, since the frequency of maintenance can be reduced compared with the conventional steel water stop door, the maintenance cost can be reduced. Moreover, the water stop door of this invention can be comprised without including steel materials, and can be reduced in weight compared with the conventional water stop door. Since the raising and lowering operation of the water stop door may be performed manually, the profit obtained by reducing the weight of the water stop door is great. Moreover, even when the raising / lowering operation of the water stop door is performed by a machine, the weight of the water stop door can be reduced, so that it is possible to reduce the size of the machine that raises and lowers the water stop door.

  In the description of the present invention so far, the embodiment in which the water stop door of the present invention is a slide gate provided in the lock gate has been illustrated and described, but the present invention is not limited to such a form. For example, the water stop door of the present invention can be provided in a culvert pipe having a smaller scale than that of a sluice gate, or can be provided in a sluice gate provided in a water channel or the like. Moreover, the form of the water stop door of this invention is not limited to a slide gate, What kind of form may be sufficient.

  The water gates provided in the locks, locks and sluices function as a dyke by being fully closed during floods. For this reason, it is important that the water stop door is “closed securely” during floods. In addition, in order to eliminate internal water during normal times and after flooding, the water stop door must also be “open reliably”. In order to ensure the reliability of operation of such a water stop door, the water stop door of the present invention can be applied to a roller gate as well as a slide gate having a simple structure. The roller gate can be closed only by its own weight by the rotation of the roller attached to the side of the water stop door, and the closing force of the switchgear is unnecessary when the water stop door is fully closed. Have.

  The present invention has been described above with reference to embodiments that are presently practical and preferred. However, the present invention is not limited to the embodiments disclosed in the specification of the present application, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification. It is to be understood that a water stop door, a lock gate, a lock pipe, and a water gate with such a change are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Concrete panel 2a 1st fiber reinforced resin composite layer 2b 2nd fiber reinforced resin composite layer 3 Paint layer 10 Water stop door 11 Gate pillar 11a Door-to-door 12 Watertight rubber 12a Watertight holding hardware 13 Door-to-door hardware 14 Rack bar 15 Operation stand 16 Hoisting machine 17 Guard fence 18 Management bridge 20 Xiamen 21 Waterway 22 Chest wall 23 Wing wall 30 Tributary 40 Main river 50 Embankment

Claims (4)

A concrete panel, a first fiber reinforced resin composite layer covering at least a part of one surface side of the concrete panel, and a second fiber reinforced resin composite covering at least a part of the other surface side of the concrete panel A water stop door having a body layer. The water stop door according to claim 1, wherein the first fiber reinforced resin composite layer and / or the second fiber reinforced resin composite layer is made of CFRP (Carbon fiber reinforced plastics). The water stop door according to claim 1 or 2, wherein the surface is covered with a coating layer. The water control structure provided with the water stop door as described in any one of Claims 1-3.

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