JP2014040757A - Swing-type gate for storm surge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swing-type gate for a storm surge, which can reliably maintain standing performance by a simple structure.SOLUTION: A swing-type gate 10 for a storm surge is installed in a gateway 12 of revetment 11 and the like on land. A floating body-like door body 1 swingable to a brought-down position D and a raised position U is housed in a pit 13. The swing-type gate for the storm surge includes a first fixing belt 4 which inhibits the door body 1 from being moved to a land side and which serves as a supporting point when the gate is raised at a predetermined angle to the land side, a second fixing belt 5 which inhibits the door body 1 from being moved to a sea side, and an anchor belt 6 which keeps the door body 1 in the raised position U against stream flow pressure from the sea side.

Description

  The present invention relates to an oscillating storm surge gate.

  Conventionally, there is a storm surge gate that is installed at the entrance and exit of onshore revetments and closes the entrance and exit when storm surges and tsunamis from the sea (river) side try to flow from the entrance to the land side (see Patent Document 1) ).

  The gate of patent document 1 is a floating body connection type flap gate, connects a plurality of door body blocks, raises each door body block sequentially by buoyancy, and closes the doorway.

JP2012-57401A

  However, it is difficult to maintain the standing performance that closes the door in a watertight manner with only the door block floating due to buoyancy, and it is necessary to add a mechanism to maintain the standing performance. There was a problem that became complicated.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an oscillating storm surge gate that can reliably maintain the standing performance with a simple structure.

  In order to solve the above-described problems, the present invention provides a swing type storm surge gate installed at an entrance / exit such as a shore revetment, and a pit excavated in a passage surface of the entrance / exit, and stored in the pit. Can be tilted in a state of being substantially parallel to the bottom of the pit and swinging to a lying position where the top surface is substantially parallel to the passage surface of the entrance and exit and a standing position that rises at a predetermined angle on the land side with respect to the bottom of the pit And, in the lodging position, one end part on the sea side and the other end part on the land side are set above the pit bottom part, and the space between the bottom surface contacting the pit bottom part from each end part, One side is connected to the bottom of the pit on the sea side, and the other end of the door is connected to the vicinity of the other end of the door body. The door body is prevented from moving to the land side, and the land side One end is connected to the first fixed belt, which is a fulcrum when rising up at a predetermined angle, and the pit bottom on the land side, the other end is connected to the vicinity of the lower surface of the door body, and the door body moves to the sea side. A swing type storm surge gate characterized by comprising: a second fixed belt that prevents the movement and a retaining belt that holds the door body in a standing position against flowing water pressure from the sea side. It is.

  As in claim 2, a side seal member that seals between the side surface of the doorway and the side surface of the door body, and a lower seal member that seals between the inside of the pit and the other end portion of the door body. It can be set as the structure provided.

  According to a third aspect of the present invention, there is provided a hook mechanism for locking to the bottom of the pit so that one end side of the door body in the lying position does not swing upward, and a floating body is provided in the hook mechanism, When the flowing water from the sea side flows into the floating body and the floating body portion is lifted, the hook mechanism releases the locking of one end side of the door body, and the pit has the door body in the lying position. It can be set as the structure provided with the stopper part which contacts the one end side or other end side of a door body so that the one end side of this may not rock | fluctuate below.

  As in claim 4, a side water-impervious member that shields water between the pit side and the side surface of the door in the lying position at a substantially intermediate position between the sea side and the land side of the pit, and the pit bottom It can be set as the structure provided with the lower water-impervious member which water-shields between the lower surfaces of the door body of a lying position.

  According to the present invention, a floating door housed in a pit of an entrance / exit such as a seawall is normally lying down by its own weight, and the upper surface of the door body can be easily reached at this lying down position.

  On the other hand, when running water on the sea (river) side tries to flow into the land side from the entrance / exit due to storm surge (tsunami), the flowing water first flows into the pit. Then, the one end side of the door body is lifted by buoyancy, and the flowing water pressure acts on the gap (elevation angle) between the one end side of the door body and the pit bottom, so that the one end part of the door body faces upward. A downward couple is generated at the other end. At this time, since the lower surface of the door body has a substantially arc shape, the fulcrum and the center of gravity gradually move from the lying down position to the other end side, so that the lower surface rolls on the bottom of the pit and rises to a predetermined position. Get up to the angle naturally. And if a fulcrum and a gravity center move to the other end part, since this other end part is connected with the 1st fixed belt, a door will come to rotate centering on the other end part. That is, the door body naturally rotates to the standing position (for example, about 60 degrees) after rolling from the lying position to a predetermined angle. As a result, the door body is held in the standing position against the flowing water pressure by the retaining belt, and the storm surge is blocked by the door body in the standing position and does not flow into the land side.

  In addition, when the storm surge is pulled, the flowing water pressure does not act on the door body, so that the door body naturally falls to the lodging position following the pulling of the flowing water to the sea side.

  In this way, the door body is prevented from moving to the land side by the first fixed belt, and the door body is landed by the first fixed belt while the door body is prevented from moving to the sea side by the second fixed belt. Since the door body is held in the upright position by the retaining belt as a fulcrum when rising to the side, the standing performance of the door body can be reliably maintained with a simple structure of only the belt.

  Further, since the door body can be raised only by natural forces such as storm surges, the door body can be reliably raised without using human power or a lifeline.

  According to claim 2, since the flowing water that has flowed into the pit from the sea side is not discharged to the outside through the gap between the side surface of the doorway and the side surface of the door body at the lying position of the door body, On the other hand, at the standing position of the door body, three sides between the door body and the entrance / exit and the pit can be sealed, so that the running water does not flow into the land side from these gaps.

  According to claim 3, even if the lower surface of the door body is substantially arc-shaped, the hook mechanism prevents one end side of the door body in the fall position from swinging upward (the other end side of the door body swinging downward). The stopper portion can be locked so that one end side of the door body in the lying position does not swing downward (the other end side of the door body swings upward). As a result, the upper surface of the door body can be safely and safely moved in the lying position.

  In addition, when storm surge (tsunami) flows from the sea side into the pit and the floating body rises, the hook mechanism is unlocked on one end side of the door body, and the door body swings to the standing position. Since it can move, the problem that the door body always swings to the standing position is eliminated.

  Further, since the locking by the hook mechanism can be released only by natural forces such as storm surges, the locking by the hook mechanism can be reliably released without using human power or a lifeline.

  According to the fourth aspect of the present invention, the side water-impervious member and the lower water-impervious member can shield water between the pit side and the side surface of the door body and between the pit bottom and the lower surface of the door body, respectively. Since running water flowing into the pit from the sea side can be concentrated and stored on one end of the door body, buoyancy and running water pressure are concentrated on one end side of the door body, and the door body swings quickly in the standing direction. become. By the way, if there is no side water-impervious member and lower water-impervious member, the center of the door body receives the buoyancy and floats first because the flowing water flows almost evenly into the one end side and the other end side of the door body. The swinging of the door body in the standing direction is delayed.

It is side surface sectional drawing of the rocking | fluctuation type storm surge gate of embodiment of this invention. It is the top view which abbreviate | omitted the door body of FIG. (A) is the II sectional view taken on the line of FIG. 2, (b) is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of Fig.3 (a). It is the IV-IV sectional view taken on the line of Fig.3 (a). (A) is sectional drawing which shows the relationship between a 1st fixing belt and a door body, (b) is sectional drawing which shows the relationship between a 2nd fixing belt and a door body, (c) is the side surface of the other example of a stopper part. FIG. It is a side water-impervious member and a lower water-impervious member, (a) is a side view, (b) is a front view of the door body lying down, and (c) is a front view when the door body is swung in an upright direction. (D) is a principal part side surface sectional drawing of the modification of a pit.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a side sectional view of a rocking storm surge gate 10 according to the present invention. FIG. 2 is a plan view in which the door body 1 of FIG. 1 is omitted.

  3A is a cross-sectional view taken along the line II of FIG. 2, and FIG. 3B is a cross-sectional view taken along the line II-II of FIG. 4 is a sectional view taken along line III-III in FIG. 3A, and FIG. 5 is a sectional view taken along line IV-IV in FIG.

  The oscillating storm surge gate 10 is installed at the entrance / exit 12 of the shore revetment 11 or the entrance / exit of the warehouse. 12 for closing.

  The passage surface 12a of the entrance / exit 12 is flat because people and vehicles come and go, and the passage surface 12a stores a door body 1 in a lying position D, which will be described later, and an upper surface 1c of the door body 1 is formed. A pit 13 having a size and a depth that is substantially parallel (substantially flush) with the passage surface 12a is excavated.

  The door body 1 housed in the pit 13 is a floating body in which the inside is formed hollow by welding by combining upper and lower surfaces 1c, 1d such as stainless steel plates and both side surfaces 1e, 1f (see FIG. 5). It has become. With respect to the lateral width of the upper surface 1c of the door body 1, both side surfaces 1e and 1f of the door body 1 are set to a lateral width that slightly enters inside in the width direction, and both sides of the upper surface 1c are formed in a flange shape.

  The door body 1 has a substantially rectangular shape in plan view, falls down in a substantially parallel state with respect to the pit bottom portion 13a, and a fall position D (two points in FIG. 1) where the upper surface 1d is substantially parallel to the passage surface 12a of the entrance / exit 12. And a standing position U (see a solid line in FIG. 1) that rises at a predetermined angle (for example, about 60 degrees) on the land side with respect to the pit bottom portion 13a.

  In the lying position D, the door body 1 is set such that one end 1a on the sea side and the other end 1b on the land side are set above the pit bottom 13a, and the doors of the pit bottom 13a are formed from these ends 1a and 1b. A space between the lower surface 1d and the lower surface 1d in contact with the body rail 30 is formed in a substantially arc shape or a substantially trapezoidal shape downward in a side view. Thus, a gap (elevation angle) f for allowing seawater (running water) to flow in is naturally formed between the one end 1a and the lower surface 1d that contacts the pit bottom 13a.

  Large gaps t1 and t2 are formed between one end 1a of the door body 1 at the lying position D and the sea-side pit front 13b and between the other end 1b and the land-side pit rear 13c, respectively. A small gap t3 is formed between the upper surface 1c of the door body 1 and the pit side portion 13e (door stop 26).

  For the door body 1, a plurality of first fixing belts 4 (two in the width direction with a predetermined interval in the width direction) are provided at positions closer to the center in the width direction. This flexible first fixed belt 4 has one end 4 a connected to the sea-side pit bottom 13 a and the other end 4 b connected to the vicinity of the other end 1 b of the door 1, and the other end of the door 1. 1b is supported to be swingable.

  The first fixed belt 4 is rotated to the left after the door body 1 rolls to the land side (leftward) from the lying position D, and the upright position with the other end 1b in contact with the door body rail 30 of the pit bottom 13a as a fulcrum. It should be long enough to get up in U. The other end portion 1b of the door body 1 can incorporate a weight (weight) 35 as necessary. In this case, the center of gravity of the door body 1 is lowered by the weight 35. It becomes easy to get up to the standing position U with the portion 1b as a fulcrum.

  In other words, the first fixed belt 4 serves as a fulcrum when rising to a land side at a predetermined angle (for example, about 60 degrees), and prevents the door body 1 from moving to the land side.

  For the door body 1, a plurality of second fixing belts 5 (two in the width direction with a predetermined interval in the width direction) are provided at positions outside the first fixing belt 4 in the width direction. . The flexible second fixed belt 5 has one end 5a connected to the land-side pit bottom 13a and the other end 5b connected to the vicinity of the lower surface 1d of the door body 1 so that the door body 1 moves to the sea side. Is to prevent

  With respect to the door body 1, a plurality of retaining belts 6 (two in the present example at a predetermined interval in the width direction) are provided at positions outside the second fixing belt 5 in the width direction. The flexible retaining belt 6 has one end 6a connected to the pit bottom 13a on the sea side, and the other end 6b connected to the vicinity of the one end 1a of the door body 1 so that the door 1 can be connected to seawater ( It is held in the standing position U against running water pressure.

  The retaining belt 6 is folded inwardly in a U-shape at the fall position D of the door body 1 and is housed between the lower surface 1d of the door body 1 and the pit bottom portion 13a [FIG. )reference〕.

  The pit bottom 13a at the position of the gap t1 between the one end 1a of the door body 1 at the lying position D and the pit front part 13b has a pit so that one end side of the door 1 at the lying position D does not swing upward. A hook mechanism 15 is provided to be engaged with the bottom portion 13a.

  For example, the hook mechanism 15 has a bracket 16 (see FIG. 4) fixed to the pit bottom portion 13a at an outer position in the width direction of the retaining belt 6, and a substantially inverted L-shaped hook 17 is fixed to the bracket 16 with a pin 17a. It is supported so that it can swing back and forth. When the hook 17 is swung rearward (left) (see the solid line in FIG. 3A), the upper end of the hook 17 engages the metal fitting 1g near the one end of the lower surface 1d of the door 1 to thereby close the door. One end side of 1 does not swing upward.

  A floating portion 17b is provided at the rear end portion of the hook 17, and seawater flows from the sea side into the pit 13 through the front gap t1, the floating portion 17b is lifted, and the hook 17 swings forward (right). The locking of the metal fitting 1g of the door body 1 by the upper end portion 17 is released.

  A stopper plate 1h near the one end side of the lower surface 1d of the door body is held on the bracket 16 of the hook mechanism 15 via a buffer rubber 16a so that one end side of the door body 1 at the lying position D does not swing downward. A stopper portion 16b is provided. In addition, as shown in FIG. 6C, a stopper portion 16b that holds the stopper plate 1h through the buffer rubber 16a may be separately provided on the pit side portion 13e (door stop 26). In addition, a stopper that stops the other end of the door 1 may be provided at the pit rear portion 13c so that the other end of the door 1 does not swing upward.

  The door body at the lying position D is located at a substantially intermediate position between the sea side and the land side of the pit 13, specifically at a position slightly closer to the land side than the substantially intermediate position. A flexible side water-impervious member 20 that shields water between the side surfaces 1e and 1f of the door 1 is attached, and the pit bottom portion 13a is capable of shielding water from the lower surface 1d of the door body 1 at the lying position D. A flexible lower water-impervious member 21 is provided continuously.

  As shown in FIGS. 7A to 7C, the side water-impervious member 20 is a door until the door body 1 stands at an angle of about half (about 30 degrees) from the lying position D to the standing position U. By contacting the side surfaces 1 e and 1 f of the body 1, water is shielded between the pit side portion 13 e (door stop 26) and the side surfaces 1 e and 1 f of the door body 1. In addition, as shown in FIGS. 7A to 7C, the lower water-impervious member 21, until the door body 1 stands at a half angle (about 30 degrees) in the direction from the lying position D to the standing position U, By contacting the lower surface 1d of the door body 1 while being bent, water is shielded between the pit bottom portion 13a and the lower surface 1d of the door body 1. Thereby, the seawater which flowed into the pit 13 from the sea side can be concentrated and stored on one end side of the door body 11.

  In a gap t1 between one end 1a of the door body 1 at the lying down position D and the pit front portion 13b, a fall prevention lid (grating) 23 capable of passing water is attached.

  As shown in FIG. 7D, in the case where the pit 13 does not have the pit front portion 13b and is open to the sea side, the fall prevention lid 23 is slanted between the pit bottom portion 13a on the sea side. What should I do?

  A lower seal member 24 is attached to the other end 1b of the door body 1 to seal the gap t2 between the pit rear portion 13c. The rear end of the lower seal member 24 may be fixed to the pit rear portion 13c as shown in FIGS. 3 (a) and 3 (b). However, as shown in FIGS. 6 (a) and 6 (b), the rear end of the lower seal member 24 may be fixed to the pit rear portion 13c. You may just touch. A cover plate 29 that covers the upper portion of the lower seal member 24 is attached to the upper portion of the pit rear portion 13c. The cover plate 29 is also used to prevent a person or a vehicle from falling into the pit 3 from the gap t2 at the lying position D of the door body 1.

  Side seal members 25 that seal a gap t3 between the pit side portion 13e and the door stop 26 from the pit side portion 13e to the side surface 12b of the doorway 12 are provided on the lower surface of the flange-like upper surface 1c on both side surfaces 1e and 1f of the door body 1. Installed.

  If the oscillating storm surge gate 10 is configured as described above, the floating door body 1 stored in the pit 13 of the entrance / exit 12 of the revetment 11 is always under its own weight, as indicated by a two-dot chain line in FIG. A person or a vehicle can come and go on the upper surface 1c of the door body 1 without hindrance at the fall position D.

  On the other hand, when sea water on the sea (river) side is going to flow into the land side from the entrance / exit 12 due to storm surge (tsunami), the sea water flows between the one end 1a of the door body 1 at the lodging position D and the pit front part 13b. It flows into the pit 13 from the fall prevention lid (grating) 23 in the gap t1 (see arrow a in FIG. 3A). Then, while the one end side of the door body 1 floats by buoyancy, the seawater pressure of seawater acts on the clearance (elevation angle) f between the one end side of the door body 1 and the pit bottom part 13a, thereby one end of the door body 1 An upward force is generated in the portion 1a and a downward force is generated in the other end portion 1b. At this time, since the lower surface 1d of the door body 1 is substantially arc-shaped, the lower surface 1d of the door body 1 is located on the bottom of the pit bottom 13a by gradually moving the fulcrum and the center of gravity from the lying position D to the other end 1b side. While rolling the door body rail 30, it naturally rises up to a predetermined standing angle. When the fulcrum and the center of gravity move to the other end portion 1b, the other end portion 1b is connected to the first fixing belt 4, so that the door body 1 rotates around the other end portion 1b. That is, the door body 1 naturally rotates to the standing position (for example, about 60 degrees) D after rolling from the lying position D to a predetermined angle. As a result, the door body 1 is held at the standing position U against the seawater pressure of the seawater by the retaining belt 6, and the storm surge is blocked by the door body 1 at the standing position U and flows into the land side. Disappear.

  Further, when the storm surge is pulled, seawater pressure of seawater does not act on the door body 1, so that the door body 1 naturally falls to the lodging position D following the storm surge pulling to the sea side. .

  As described above, the first fixing belt 4 prevents the door body 1 from moving to the land side by the first fixing belt 4 and prevents the door body 1 from moving to the sea side by the second fixing belt 5. The door body 1 is used as a fulcrum when the door body 1 rises to the land side, and the retaining body 6 holds the door body 1 in the standing position U. Therefore, the door body 1 can be erected with a simple structure using only the belts 4, 5, and 6. Performance can be maintained reliably.

  Further, since the door body 1 can be raised only by natural force such as storm surge (tsunami), the door body 1 can be reliably raised without using human power or a lifeline.

  Furthermore, even if the lower surface 1d of the door body 1 has a substantially arc shape, the hook mechanism 15 does not swing one end side of the door body 1 at the fall position D upward (the other end side of the door body 1 swings downward). The stopper portion 16b can hold the door body 1 so that one end side of the lying position D does not swing downward (the other end side of the door body 1 swings upward). As a result, the upper surface 1c of the door body 1 can be safely and safely traveled at the lying down position D.

  Further, when seawater from the sea side flows into the pit 13 due to a storm surge (tsunami) and the floating body portion 17b rises, the locking of the one end side of the door body 1 by the hook mechanism 15 is released, and the door body 1 Can swing to the standing position U, so that the problem that the door body 1 always swings to the standing position U is eliminated.

  Further, since the locking by the hook mechanism 15 can be released only by natural forces of storm surges, the locking by the hook mechanism 15 can be reliably released without using human power or a lifeline.

  Further, the side water-impervious member 20 and the lower water-impervious member 21 are provided between the pit side part 13e (door stop 26) and the side surfaces 1e and 1f of the door body 1, and the pit bottom part 13a and the lower surface 1d of the door body 1. Since the seawater flowing into the pit 13 from the sea side can be concentrated and stored on one end side of the door body 1, buoyancy and seawater pressure are concentrated on one end side of the door body 1. Thus, the swinging of the door body 1 in the standing direction becomes quick. Incidentally, if the side water-impervious member 20 and the lower water-impervious member 21 are not present, seawater flows into the one end side and the other end side of the door body 1 approximately evenly, so that the center of the door body 1 receives buoyancy. Since it floats first, the swinging of the door body 1 in the standing direction is delayed.

  Furthermore, a side seal member 25 that seals between the side surface 12b of the doorway 12 and the side surfaces 1e and 1f of the door body 1 and a lower seal member 24 that seals between the pit rear portion 13c and the other end portion 1b of the door body 1 are sealed. In the lying position D of the door body 1, the seawater that has flowed into the pit 13 from the sea side is discharged to the outside from the gap t3 between the side surface 12b of the doorway 12 and the side surfaces 1e and 1f of the door body 1. Therefore, buoyancy and seawater pressure can be more concentrated on one end side of the door body 1. On the other hand, at the standing position U of the door body 1, since the three sides between the door body 1 and the entrance 12 and the pit 13 can be sealed, seawater does not flow into the land from these gaps.

  In addition, the door body 1 prevents the door body 1 from moving to the land side by the first fixing belt 4, and prevents the door body 1 from moving to the sea side by the second fixing belt 5. Since the fixing belt 4 serves as a fulcrum when the door body 1 rises to the land side, and the retaining belt 6 holds the door body 1 in the upright position U, no hinge bracket or hinge shaft is required (hingeless type). The support structure is simple and the number of parts is reduced (hingeless gate).

  Furthermore, since the belts 4-6 can share the same belt material, manufacture and management become easy.

  Moreover, since the door body 1 is hollow, it is lightweight during manufacture and transport, and is easy to handle, so installation work is facilitated.

1 door 1a one end 1b other end 1c upper surface 1d lower surface 4 first fixed belt 4a one end 4b other end 5 second fixed belt 5a one end 5b other end 6 retaining belt 6a one end 6b other end 10 swinging storm surge gate 11 Revetment 12 Entrance 12a Passage surface 12b Side face 13 Pit 13a Pit bottom 13b Pit front part 13c Pit rear part 13e Pit side part 15 Hook mechanism 17 Hook 17b Floating part 16 Bracket 16b Stopper part 20 Side water shielding member 21 Lower water shielding member 24 Lower part Seal member 25 Side seal member D Lodging position U Standing position

Claims (4)

It is a swing type storm surge gate installed at the entrance and exit of land protection,
A pit excavated in the passage surface of the entrance,
A fall position that is stored in the pit and falls in a state of being substantially parallel to the bottom of the pit, the upper surface of which is substantially parallel to the passage surface of the entrance, and a standing position that rises at a predetermined angle on the land side with respect to the bottom of the pit In the lying position, one end on the sea side and the other end on the land side are set above the bottom of the pit, and come into contact with the bottom of the pit from each end. A floating door body formed between the lower surface and the substantially arcuate or downward trapezoidal shape in a side view,
One end is connected to the bottom of the pit on the sea side, the other end is connected to the vicinity of the other end of the door body, and the door body is prevented from moving to the land side and rises at a predetermined angle on the land side. A first fixing belt which becomes a fulcrum of time,
A second fixed belt having one end connected to a land-side pit bottom and the other end connected to the vicinity of the lower surface of the door body to prevent the door body from moving to the sea side;
An oscillating storm surge gate comprising a retaining belt that holds the door body in a standing position against a flowing water pressure from the sea side.   A side seal member that seals between the side surface of the doorway and the side surface of the door body, and a lower seal member that seals between the inside of the pit and the other end portion of the door body are provided. The swing type storm surge gate according to claim 1. A hook mechanism that locks to the bottom of the pit is provided so that one end side of the door body in the lying position does not swing upward, and a floating body is provided in the hook mechanism so that running water from the sea side is in the pit. When the floating body portion is raised and the floating body portion is lifted, the hook mechanism is unlocked on one end side of the door body, and
The stopper is provided in the pit so as to stop one end side or the other end side of the door body so that one end side of the door body in the lying position does not swing downward. Swing type storm surge gate as described in.   A side water-impervious member that shields water between the pit side and the side surface of the door in the lying position at a substantially intermediate position between the sea side and the land side of the pit, and the lower surface of the door in the pit bottom and the lying position The oscillating storm surge gate according to any one of claims 1 to 3, further comprising a lower water-impervious member that shields water from each other.

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