JP2016142090A - Tsunami barrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the number of end supports, without reference to the number of corner parts for changing the direction of erecting the screen, by eliminating a gap in the screen between the end supports.SOLUTION: A tsunami barrier (1) includes a plurality of supports (2) that are erected on a foundation, and a screen (3) that is laid between the supports (2) to capture an object drifted by a force of waves. At least some of the supports (22) are each provided with guide parts (4) for changing the direction of laying the screen (3).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a tsunami barrier that captures drifting objects or the like when a tsunami or storm surge occurs.

Tsunami barriers are known that are installed on quay walls, revetments, etc., and prevent tsunamis and storm surges from flowing into the land of ships and drifting objects due to push waves, and pulling waves to the sea from cargoes on the ground. , See Patent Document 1).
The tsunami barrier includes, for example, a plurality of support columns standing on the ground and a capture screen supported by these support columns, and prevents inflow of drifting material and the like and outflow of luggage by the support columns and the screen. Can absorb shock.
The tsunami barrier is often provided so as to surround the package placement space in order to avoid outflow of the package placed on land.
When enclosing luggage with a tsunami barrier, it is necessary to change the direction in which the screen is erected with an intermediate post in the middle. In particular, when installing a tsunami barrier in a rectangular shape according to the shape of the mounting space, it is necessary to bend the screen almost at a right angle at the corner, so that the screen contacts the column and the load is repeatedly applied. It is gradually damaged and eventually breaks.
Therefore, when there is a place where the installation direction of the screen is greatly changed like the corner portion of the tsunami barrier, as shown in FIGS. 14 and 15, the installation of the screen 101 is temporarily ended at the corner portion, The construction was such that the installation was started on another screen 101. Thereby, even if the tsunami barrier 100 has a corner, the screen 101 is prevented from being broken by combining a plurality of linear fences.

JP2013-119698A

  However, when the installation of the screen 101 is finished at the corner of the tsunami barrier 100, two corners are formed for each corner, so that there is a gap between the end columns 102 that support the edge of the screen 101. End up. Moreover, since it is necessary to receive all the tension | tensile_strength concerning the screen 101 for the edge part support | pillar 102, it is necessary to make it stronger than the intermediate | middle support | pillar 103 of another intermediate part on the structure, and the problem that material and construction cost increase. was there. Therefore, there has been a demand to reduce the end column 101 of the tsunami barrier 100 as much as possible.

  Therefore, the present invention has been made in view of the above problems, and eliminates the gap between the screens of the end columns and is not limited to the number of corners that change the direction of laying the screen, but minimizes the number of column columns. The object is to provide a tsunami barrier that can be limited.

  In order to solve the above-mentioned problems, the present invention provides a tsunami barrier comprising a plurality of support columns erected on a foundation and a screen spanned between the support columns, wherein at least some of the support columns are provided with the screen. A guide portion is provided to change the crossing direction.

  In addition, the plurality of support columns include at least two end support columns that support the end portions of the screen, and intermediate support columns that are disposed between the end support columns and support the screen. It is preferable that the intermediate strut is provided.

  Moreover, it is preferable that the said guide part is provided with the base provided in the side surface of the said intermediate | middle support | pillar, and the support part which is provided in the said base and supports the said screen so that sliding is possible.

  In addition, the support portion includes a shaft portion erected on the pedestal, and a cylindrical portion through which the shaft portion is inserted to be rotatable about the shaft portion and capable of sliding the screen on the outer surface. Is preferred.

  Moreover, it is preferable that the said support part is provided in both the drawing-in side and the drawer side of the said screen in the said base.

  Moreover, it is preferable that two said support parts are provided in the said base in the drawing-in side and the drawing-out side of the said screen, respectively, and the said screen is passed between the said support parts in each side.

  Moreover, it is preferable that the screen has a wire rope, is provided so as to penetrate the inside of the support column, includes a linearly formed tube material, and the wire rope is passed through the tube material.

  Moreover, the receiving member which has a curved surface formed so that it may curve toward the outer surface side from the inner surface side of the said tube material is provided in the both ends of the said tube material.

  According to the present invention, it is possible to eliminate the screen gap between the end support columns, and it is possible to minimize the number of end support columns as well as the number of corners that change the direction in which the screen is installed.

It is a perspective view of the quay where the tsunami barrier surrounding a load was provided. It is a top view of a tsunami barrier. It is a perspective view of the corner | angular part of a tsunami barrier. It is the perspective view which expanded and looked at a part of end part support | pillar. It is a perspective view which shows the structure of the edge part of a screen. It is a front view of the intermediate support | pillar provided with the guide part. It is a side view of the intermediate support | pillar provided with the guide part. It is a top view of the guide part seen from the AA direction in FIG. It is a top view of the corner | angular part of the tsunami barrier by which the screen was constructed. It is a front view of the intermediate support | pillar in which the guide part in 2nd Embodiment was provided. It is a side view of the intermediate support | pillar in which the guide part in 2nd Embodiment was provided. It is a top view of the guide part seen from the BB direction in FIG. It is a top view of the corner | angular part of the tsunami barrier in which the screen in 2nd Embodiment was constructed. It is a top view of the conventional tsunami barrier. It is a top view which shows the structure of the corner | angular part of the conventional tsunami barrier.

  Preferred embodiments of the present invention will be described with reference to the drawings. In addition, embodiment shown below is one illustration and can take various embodiment in the scope of the present invention.

[First Embodiment]
<Structure of tsunami barrier>
FIGS. 1 to 3 are diagrams illustrating a tsunami barrier, and FIGS. 4 to 6 are diagrams illustrating a guide unit included in the tsunami barrier.
As shown in FIGS. 1 and 2, the tsunami barrier 1 is provided near the quay of the harbor. The tsunami barrier 1 is provided in a rectangular shape so as to surround a loading space S in which a load C to be loaded on a ship or a load C unloaded from a ship is temporarily placed.
The tsunami barrier 1 does not completely surround the loading space S, but is provided with a gate 11 through which a vehicle passes in order to carry out the temporarily loaded luggage C and carry the luggage into the loading space S. .
The tsunami barrier 1 includes a plurality of support columns 2, a screen 3, a guide portion 4, and a pipe material 5.

(Support)
A plurality of support columns 2 are erected on the ground as a foundation. The support columns 2 are erected on the ground so as to be aligned on a straight line, and the alignment direction is changed along the way. That is, the part where the arrangement direction changes is the corner of the tsunami barrier 1. Since the tsunami barrier 1 is formed in a rectangular shape, the alignment direction of the columns 2 is changed at four locations so as to have four corners.
The plurality of struts 2 include an end strut 21 that supports the end of the screen 3 and an intermediate strut 22 that is disposed between the end struts 21 and supports the screen 3.
The end struts 21 are used as struts constituting the gate 11, and all the struts other than the end struts 21 are intermediate struts 22 and are arranged with a predetermined interval between the end struts 21. Yes.
The end column 21 is configured to be stronger than the intermediate column 22 that supports the middle of the screen 3 so that it can withstand the tension acting on the screen 3. Specifically, the end column 21 is larger in diameter and thicker than the intermediate column 22, and is deeply embedded in the ground by taking an anchor or the like.
Here, the end column 21 is designed so as to absorb the collision energy of the drifting object or the like colliding with the end column 21 by deformation. The intermediate strut 22 is designed to absorb the collision energy of a drifting object or the like colliding with the intermediate strut 22 by deformation, but is reduced by absorbing the collision energy due to the extension of the screen 3. The allowable deformation amount of the intermediate column 22 is that the inclination angle of the axis is 15 °.

(screen)
Screen 3 is used to prevent the inflow of ships and drifting objects into the land due to the rushing waves from the sea to the land when tsunamis and storm surges occur, and the outflow of luggage in the loading space S to the sea due to pulling waves. It will be a catcher of things to be washed away.
The screen 3 includes, for example, a plurality of wire ropes 31 that are passed through the columns 2 arranged. Each wire rope 31 is inserted into a pipe 5 provided in each column 2 so as to be along a horizontal direction orthogonal to the axial direction of each column 2. Each wire rope 31 is installed so that the extending directions thereof are parallel to each other, and the installation direction of the wire ropes 31 is changed at the intermediate strut 22 that is a corner of the tsunami barrier 1. As shown in FIGS. 1 and 2, when the tsunami barrier 1 is provided in a rectangular shape, the wire rope 31 is bent at approximately 90 ° at the corners.
As shown in FIG. 4, both ends of the wire rope 31 are attached to the end column 21. As shown in FIG. 5, a bolt 32 having a thread formed on the end of the wire rope 31 is provided coaxially with the wire rope 31. The wire rope 31 can be attached to the end column 21 by fastening the bolt 32 with the washer 33 and the nut 34.
Here, the screen 3 can be constituted by a plurality of wire ropes 31 installed between the support columns 2, but in order to prevent the wire ropes 31 from slacking when the distance between the adjacent support columns 2 is long. The wire ropes 31 may be connected to each other while maintaining a predetermined interval.

(Guide part)
As shown in FIGS. 3 and 6 to 9, the guide portion 4 guides the wire rope 31 at the corner portion of the tsunami barrier 1 so that the wire rope 31 does not come into contact with the intermediate strut 22 and is damaged. .
The guide 4 is provided on the intermediate strut 22 at the corner of the tsunami barrier 1. The guide portion 4 is provided on the intermediate strut 22 in accordance with the height at which each wire rope 31 is installed.
The guide part 4 includes a pedestal 41 and a support part 42.
The pedestal 41 is fixed to the side surface of the intermediate support column 22 serving as a corner by welding or the like. The pedestal 41 is provided on both the pull-in side and the pull-out side of the wire rope 31 in the intermediate strut 22 serving as a corner. In other words, the pedestal 41 is provided at a position facing the center of the intermediate column 22.
The pedestal 41 has two plate members 41 a and 41 b arranged in parallel with each other with a predetermined interval in the axial direction of the intermediate support column 22. The plate materials 41a and 41b are made of, for example, a steel plate. A support portion 42 is provided between the two plate members 41a and 41b.
The support part 42 supports the wire rope 31 so that sliding is possible, and changes the construction direction of the wire rope 31. Two support portions 42 are provided side by side so as to sandwich the pull-in route or the pull-out route of the wire rope 31 in each pedestal 41.
The support portion 42 has one end fixed to one plate member 41a of the pedestal 41 and the other end fixed to the other plate member 41b of the pedestal 41, and the shaft portion 42a is inserted and coaxial with the shaft portion 42a. A cylindrical portion 42b which is disposed on the upper portion and is rotatable with respect to the shaft portion 42a and on which the wire rope 31 can slide is provided on the outer peripheral surface thereof.
The shaft portion 42a is, for example, a cylindrical body formed from a steel material, and is fixed to the plate materials 41a and 41b by welding.
The cylindrical portion 42b is formed of a relatively soft material such as a resin and is a cylindrical body that is rotatable around the shaft portion 42a. Therefore, the tube portion 42b can be easily moved around the shaft portion 42a by the tension acting on the wire rope 31. By rotating and moving the wire rope 31, the force is not concentrated on the support portion 42.

(Tube material)
As shown in FIGS. 6 to 9, the pipe material 5 is provided so as to penetrate both the end column 21 and the intermediate column 22 through the column 2. The pipe 5 is formed in a cylindrical shape whose axis extends in a straight line. At both ends of the tube material 5, receiving members 51 having smooth curved surfaces that are curved from the inner surface toward the outer surface of the tube material 5 are provided. The reason why the receiving member 51 is provided is to prevent damage caused by the wire rope 31 to be inserted coming into contact with the corners of both ends of the pipe material 5. Note that the receiving member 51 may be formed integrally with the tube material 5 and both ends of the tube material 5 may be formed in a curved shape from the inner surface toward the outer surface.
When the pipe member 5 is provided on the support column 2, the wire rope 31 is drawn and pulled out along the axial direction of the pipe member 5, and the pipe member 5 is provided between the two support portions 42 provided on each pedestal 41. The guide part 4 and the pipe material 5 are arranged so that the axis line of can pass.

<Tsunami barrier construction method>
Next, the construction method of the tsunami barrier 1 will be described.
As shown in FIGS. 1 and 2, when the loading space S partitioned in a rectangular shape is surrounded by the tsunami barrier 1, the tsunami barrier 1 is preferably formed in a rectangular shape.
The struts 2 are installed at predetermined intervals along the boundary of the loading space S. At this time, the end column 21 is installed as a column of the gate 11 that becomes the end of the wire rope 31, and the intermediate column 22 is installed as the other column.
The tube material 5 is inserted through the end column 21 and the intermediate column 22, and the receiving members 51 are attached to both ends of the tube material 5. In addition, the guide portion 4 is attached to the intermediate strut 22 disposed at a position that becomes the corner portion of the tsunami barrier 1.
Next, one end of the wire rope 31 is attached to one end support column 21, and the other end is passed through the intermediate support column 22 in order. Here, when the wire rope 31 is passed through the corner portion of the tsunami barrier 1, the wire rope 31 is passed between the two support portions 42 on the pull-in side, and then the wire rope 31 is passed through the pipe material 5. The wire rope 31 drawn out from is passed between the two support portions 42 on the drawer side. After passing the wire rope 31 through all the intermediate struts 22, the other end of the wire rope 31 is attached to the other end strut 21.
By performing the above operation for all the wire ropes 31, the screen 3 for capturing drifting objects and luggage is completed.

<Action, effect>
According to the tsunami barrier 1 having the above configuration, the wire rope 31 does not directly contact the intermediate support 22 by providing the guide part 4 on the intermediate support 22 serving as the corner, and therefore the tension is applied. In this case, damage to the wire rope 31 can be prevented. In addition, since the tube portion 42b of the support portion 42 of the guide portion 4 rotates, friction with the support portion 42 due to the movement of the wire rope 31 when tension is applied can be eliminated by the rotation of the tube portion 42b. 31 can be prevented from being damaged. Therefore, since the wire rope 31 can be bent and supported at the support portion 42 at the corner portion of the tsunami barrier 1, the end strut is provided at the corner portion each time the installation direction of the wire rope 31 is changed as in the prior art. 21 is not required to fix the wire rope 31 to the end column 21. Thereby, as is clear from the comparison between FIG. 2 and FIG. 10, the number of the struts 2 at the corners of the tsunami barrier 1 can be reduced, and the end struts require more labor and cost than the intermediate struts 22. Since the number of 21 can be reduced, the construction process can be shortened and the cost can be reduced. Moreover, since the location where the wire rope 31 is not erected can be eliminated between the end struts 21 at the corners, the inflow and outflow of the luggage with respect to the tsunami barrier 1 can be prevented.
Moreover, since the support part 42 is pinched | interposed into the base 41, the wire rope 31 does not come off from the support part 42.
Moreover, since the guide part 4 and the pipe material 5 are arrange | positioned so that the axis line of the pipe material 5 may pass between the two support parts 42 provided in each pedestal 41, the wire rope 31 is linearly formed on the intermediate column 22. The wire rope 31 can be easily inserted.
Moreover, the damage which arises by the point contact of the pipe material 5 and the wire rope 31 can be prevented by providing the receiving member 51 in the both ends of the pipe material 5. FIG.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Since the second embodiment is different from the first embodiment in the structure of the guide portion, the guide portion will be described below, and the same components as those in the first embodiment are denoted by the same reference numerals and described. Omitted.
In the present embodiment, the wire rope 31 is supported by the guide portion 4A inside the intermediate strut 22 rather than being inserted through the intermediate strut 22 disposed at the corner of the tsunami barrier 1 via the pipe material 5. The structure to let you adopt is adopted.

(Guide part)
As shown in FIGS. 10 to 13, the guide portion 4 </ b> A guides the wire rope 31 at the corner portion of the tsunami barrier 1 so that the wire rope 31 does not come into contact with the intermediate strut 22 and is damaged.
The guide portion 4 </ b> A is provided on the intermediate strut 22 at the corner of the tsunami barrier 1. 4 A of guide parts are provided in the intermediate | middle support | pillar 22 according to the height where each wire rope 31 is constructed.
The guide part 4 </ b> A includes a pedestal 41 and a support part 42.
The pedestal 41 is fixed to the side surface of the intermediate support column 22 serving as a corner by welding or the like. The pedestal 41 is provided on the intermediate strut 22 so as to extend from the intermediate strut 22 serving as a corner toward the inside of the tsunami barrier 1.
The pedestal 41 has two plate members 41 a and 41 b arranged in parallel with each other with a predetermined interval in the axial direction of the intermediate support column 22. The plate materials 41a and 41b are made of, for example, a steel plate. A support portion 42 is provided between the two plate members 41a and 41b.
The support part 42 supports the wire rope 31 so that sliding is possible, and changes the construction direction of the wire rope 31. Two support portions 42 are provided side by side on the pedestal 41 so as to sandwich the wire rope 31. The two support portions 42 are arranged so that the respective axes are aligned with the axis of the intermediate support 22. That is, the two support portions 42 are arranged so that the arrangement direction thereof is along the extending direction of the pedestal 41, and the wire rope 31 is passed between the two support portions 42.
The support portion 42 has one end fixed to one plate member 41a of the pedestal 41 and the other end fixed to the other plate member 41b of the pedestal 41, and the shaft portion 42a is inserted and coaxial with the shaft portion 42a. A cylindrical portion 42b which is disposed on the upper portion and is rotatable with respect to the shaft portion 42a and on which the wire rope 31 can slide is provided on the outer peripheral surface thereof.
The shaft portion 42a is, for example, a cylindrical body formed from a steel material, and is fixed to the plate materials 41a and 41b by welding.
The cylindrical portion 42b is formed of a relatively soft material such as a resin and is a cylindrical body that is rotatable around the shaft portion 42a. Therefore, the tube portion 42b can be easily moved around the shaft portion 42a by the tension acting on the wire rope 31. By rotating and moving the wire rope 31, the force is not concentrated on the support portion 42.
Even in the guide portion 4A having such a configuration, the wire rope 31 is not in direct contact with the intermediate strut 22, so that the wire rope 31 can be prevented from being damaged when a tension is applied.

<Others>
In addition, this invention is not restricted to the said embodiment, In the range which does not exceed the range of this invention, it can change suitably. For example, the screen 3 is not limited to the plurality of wire ropes 31, but may be a screen with a wire rope attached to the outer edge of the net material. The shape of the support column 2 and the shape of the pipe material 5 are arbitrary, and the design can be changed as appropriate if the effects of the present invention can be obtained.

DESCRIPTION OF SYMBOLS 1 Tsunami barrier 2 Support | pillar 3 Screen 4 Guide part 5 Tubing material 21 End part support | pillar 22 Intermediate support | pillar 31 Wire rope 41 Base 41a Plate material 41b Plate material 42 Support part 42a Shaft part 42b Tube part

Claims (8)

A tsunami barrier comprising a plurality of pillars erected on a foundation, and a screen that captures an object that is bridged between the pillars and is swept away by the force of waves,
A tsunami barrier, wherein at least some of the columns are provided with a guide portion that changes a direction in which the screen is bridged. The plurality of struts include at least two end struts that support the ends of the screen, and intermediate struts that are disposed between the end struts and support the screen.
The tsunami barrier according to claim 1, wherein the guide portion is provided on the intermediate strut. The guide portion is
A pedestal provided on a side surface of the intermediate strut;
A support portion provided on the pedestal and slidably supporting the screen;
The tsunami barrier according to claim 2, comprising: The support part is
A shaft portion erected on the pedestal;
A cylindrical portion through which the shaft portion is inserted and is rotatable around the shaft portion, and the screen can slide on the outer surface;
The tsunami barrier according to claim 3, comprising:   5. The tsunami barrier according to claim 3, wherein the support portion is provided on both the drawing side and the drawing side of the screen in the pedestal.   The said support part is provided in each two at the drawing-in side and the drawing-out side of the said screen in the said base, The said screen is penetrated between the said support parts in each side. Tsunami barrier as described in. The screen has a wire rope;
7. The tube according to claim 1, further comprising: a tube material that is provided so as to penetrate through the support column, and the wire rope is passed through the tube material. 8. Tsunami barrier.   The tsunami barrier according to claim 7, wherein a receiving member having a curved surface formed so as to bend from the inner surface side to the outer surface side of the tube material is provided at both ends of the tube material.

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