JP3958169B2 - Openable port structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an open / close-type harbor structure such as an open / close-type breakwater, an open / close-type breakwater or a sluice door which is provided in a harbor, fishing port, river, lake, or similar place, and is resistant to high waves, storm surges, or tsunamis. is there.
[0002]
[Prior art]
  For example, as shown in Fig. 8, there is currently an openable port structure that protects urban areas from disasters such as high waves, storm surges, or tsunamis by closing a waterway (or channel) R located near the entrance of the port. Proposed.
  FIG. 8 is a schematic perspective view showing a state in which the openable harbor structure closes the water channel R.
  In addition, the width | variety of the water channel R assumed here is 100-600 meters, and the water depth is 5-20 meters. An example of such a waterway R is an entrance of an urban area. The tide level difference (water level difference) is assumed to be about 2 to 5 meters.
[0003]
  As shown in FIG. 8, this openable / closable harbor structure 10 includes a face body 11 and supports 12 and 13 disposed on both sides of the face body 11. Symbol W. in the figure. B. Is a breakwater (existing or new).
  In FIG. 8, the left side of the face piece 11 and the supports 12 and 13 is the sea side (or the outside of the port), and the right side is the river side (or the inside of the port).
[0004]
  Now, the face body 11 is extended in the water depth direction and the horizontal direction, and if necessary to improve water shielding, weather resistance, and environmental resistance, the high strength coated with rubber or plastic. It is a film-like member made of a fiber material (aramid fiber, ultra-high molecular polyethylene, polyarylate, polyester, etc.).
[0005]
  As shown in FIG. 9, for example, 13 wire ropes 11a, 11b, 11c,... Are arranged on the back side of the face piece 11, that is, on the river side located on the right side in FIG. Has been.
  These 13 wire ropes 11 a to 11 m extend from one support body 12 to the other support body 13 in parallel with the plane body 11.
  In FIG. 9, the symbol B is the bottom of the water.
  Such an open / close-type harbor structure 10 is configured to pull the face body 11 in the horizontal direction only by the support bodies 12 and 13 disposed on both sides of the face body 11 (see, for example, Patent Document 1). That is, a horizontal force F acts on the supports 12 and 13.
[0006]
[Patent Document 1]
          Japanese Patent Application No. 2002-235958 (FIGS. 1, 3, 4 and 6)
[0007]
[Problems to be solved by the invention]
  However, in such a conventional openable / closable harbor structure, the face body 11 that receives tension in the horizontal direction based on the water pressure of the water level difference is supported by the support bodies 12 and 13 on both sides via the wire ropes 11a to 11m. Therefore, there is a problem that the structures of the support bodies 12 and 13 are inevitably enlarged in order to resist the force pulled by the face piece 11, and the cost increases accordingly.
[0008]
  This invention is made | formed in view of said situation, It aims at providing the opening-and-closing type harbor structure which can aim at the reduction of cost by simplifying or miniaturizing the support body which supports a face body. .
[0009]
[Means for Solving the Problems]
  The open / close-type harbor structure of the present invention employs the following means in order to solve the above-mentioned problems.
  That is, according to the openable / closable harbor structure according to claim 1, the surface body that is extended in the depth direction and the horizontal direction, and both sides of the face body that receives the tension in the horizontal direction based on the water pressure of the water level difference in the horizontal direction. And support on both sides for supporting by pulling, Harbors, fishing ports, rivers and lakes or similar placesEach of the support bodies is connected to a fixing structure via a connecting member.And an actuator is provided between the connecting member, or between the connecting member and the fixing structure, or between the connecting member and the support.It is characterized by that.
[0010]
  In this open / close-type harbor structure, the horizontal force acting on the support is distributed (or shared) to (or shared with) the connecting member and the fixing structure, and the horizontal force that the support is responsible for decreases. It will be.
  Moreover, in this open / close-type harbor structure, the force by which the support is pulled toward the fixing structure by the actuator is adjusted.
[0011]
  According to the openable / closable harbor structure according to claim 2, the connecting member is interposed between the convex structure provided so as to project upward from the upper surface of the support body and the fixing structure. It is characterized by.
[0012]
  In this open / close-type harbor structure, a connecting member is provided between the convex structure protruding upward from the upper surface of the support and the fixing structure. That is, one end of the connecting member is connected to a convex portion provided at a position far from the water bottom.
[0013]
  According to the openable / closable harbor structure according to claim 3, the fixing structure is a sinker submerged in a water bottom.
[0014]
  In this open / close-type harbor structure, the fixing structure is a relatively inexpensive sinker.
[0015]
  According to the openable / closable harbor structure according to claim 4, the fixing structure is an existing breakwater, a reinforced breakwater obtained by reinforcing an existing breakwater, or a newly built breakwater. And
[0016]
  In this open / close-type harbor structure, the fixing structure is a breakwater that can handle the reaction force equivalent to the support.
[0017]
  According to the openable / closable harbor structure according to claim 5, the fixing structure is a structure similar to the support.
[0018]
  In this open / close-type harbor structure, the fixing structure has the same (or the same) structure as the support located on both sides of the face piece.
[0019]
  Claim6According to the described openable / closable harbor structure, the fixing structure and the connecting member are arranged such that the connecting member extends in a direction substantially opposite to a direction in which the face body pulls the support body. It is characterized by.
[0020]
  In this open / close-type harbor structure, the fixing structure and the connecting member are arranged in the direction in which the resultant force of the force acting on the support body is minimized.
[0021]
  Claim7According to the described openable / closable harbor structure, each of the fixing structures is provided with a slant pile extending in a direction substantially the same as a direction in which the face body pulls the support body.
[0022]
  In this open / close-type harbor structure, the horizontal force acting on the support is distributed (or shared) to the slant pile via the fixing structure, and the horizontal force that the support is responsible for is Will decrease.
[0023]
  Claim8According to the described openable / closable harbor structure, the support is made of a steel pipe pile foundation.
[0024]
  In this open / close-type harbor structure, a steel pipe pile foundation that can be installed mainly only by driving work is used as a support.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
  FIG. 1 is a schematic perspective view showing a first embodiment of an openable / closable harbor structure according to the present invention, and shows a state in which a water channel (or a channel) is closed as in FIG. 8 described above. Further, in FIG. 1, in order to make the configuration of the present invention easier to understand, the breakwater W.V shown in FIG. B. Is indicated by a broken line and the water surface is omitted.
  In addition, the same code | symbol is attached | subjected to the member same as the prior art mentioned above.
[0026]
  As shown in FIG. 1, the openable / closable harbor structure 100 according to the present invention includes a face body 11, support bodies 12 and 13 disposed on both sides of the face body 11, fixing structures 112 and 113, and a support body 12. , 13 and connecting members 112a, 113a for connecting the fixing structures 112, 113, respectively.
  In FIG. 1, the left side of the face piece 11 and the supports 12 and 13 is the sea side (or the outside of the port), and the right side is the river side (or the inside of the port).
[0027]
  Each of the supports 12 and 13 is constructed as a caisson-type foundation, a steel footing foundation, an RC footing foundation, a steel pipe sheet pile, or a well foundation.
[0028]
  The fixing structures 112 and 113 are, for example, concrete sinkers (weight: gravity foundation) having a rectangular parallelepiped shape. Each of these sinkers 112 and 113 is sunk to the bottom B with a crane or the like after being transported to a predetermined position by a carriage or the like. In the present embodiment, these sinkers 112 and 113 are orthogonal to the sea side (offshore side), that is, the line connecting the support body 12 and the support body 13 with respect to the corresponding support bodies 12 and 13, respectively. 11 is installed on the side opposite to the direction in which the swells.
  On the other hand, the connecting members 112a and 113a are, for example, wire ropes, and are connected to the supporting members 12 and 13 and the latching members 114 provided on the fixing structures 112 and 113, respectively.
[0029]
  In the present embodiment, one sinker 112 and 113 and two wire ropes 112a and 113a are provided for each of the supports 12 and 13, respectively.
  One of the two wire ropes 112a and 113a connects a hooking member 114 provided on the upper side of the support bodies 12 and 13 and a hooking member 114 provided on the upper surface of the sinkers 112 and 113. . The other of the two wire ropes 112a and 113a includes a hooking member 114 provided at a substantially middle portion in the vertical direction of the support bodies 12 and 13 and a sinker 112 facing the support bodies 12 and 13, A hooking member 114 provided on the side surface of 113 is connected.
  Each of these wire ropes 112a and 113a is stretched in a tensioned state.
[0030]
  With such a configuration, the horizontal force F acting on the supports 12 and 13 is distributed (or shared) (or handled) to the wire ropes 112 a and 113 a and the sinkers 112 and 113. Since the horizontal force F that is applied to the support body 12 and 13 is reduced (or the force acting on the support bodies 12 and 13 is offset by the force acting on the wire ropes 112a and 113a and the sinkers 112 and 113), the support body The structure of 12 and 13 can be simplified or miniaturized, and costs such as material costs and construction costs can be reduced.
  Further, after sinking the relatively inexpensive sinkers 112 and 113 in the bottom B, the hooking member 114 on the sinkers 112 and 113 side and the hooking member 114 on the support bodies 12 and 13 side are connected by the connecting members 112a and 113a. Therefore, construction work can be easily performed, and costs associated with this can be suppressed.
[0031]
  FIG. 2 is a schematic perspective view showing a second embodiment of the openable / closable harbor structure according to the present invention, and is a view showing a state in which a water channel (or channel) is closed as in FIG. 1 described above.
  In addition, the same code | symbol is attached | subjected to the member same as the prior art mentioned above and 1st Embodiment.
[0032]
  As shown in FIG. 2, the openable port structure 200 according to the present invention includes a face body 11, support bodies 212 and 213 disposed on both sides of the face body 11, fixing structures 112 and 113, and a support body 212. , 213 and connecting structures 112a and 113a for connecting the fixing structures 112 and 113, respectively.
  The support members 212 and 213 in the present embodiment are provided with convex portions 212a 'and 213a' provided so as to protrude upward from the upper surfaces 212a and 213a. These convex portions 212a 'and 213a' are rod-shaped members having a circular shape in plan view and having very high rigidity.
  In FIG. 2, the left side of the face piece 11 and the supports 212 and 213 is the sea side (or the outside of the port), and the right side is the river side (or the inside of the port).
[0033]
  The fixing structures 112 and 113 are, for example, concrete sinkers (weight: gravity foundation) having a rectangular parallelepiped shape. Each of these sinkers 112 and 113 is sunk to the bottom B with a crane or the like after being transported to a predetermined position by a trolley or the like. In the present embodiment, these sinkers 112 and 113 are orthogonal to the sea side (offshore side), that is, the line connecting the support body 212 and the support body 213, with respect to the corresponding support bodies 212 and 213, respectively. 11 is installed on the side opposite to the direction in which the swells.
[0034]
  On the other hand, the connecting members 112a and 113a are, for example, wire ropes, and are connected to the protrusions 212a ′ and 213a ′ of the supports 212 and 213 and the latching members 114 provided on the fixing structures 112 and 113, respectively. .
[0035]
  In the present embodiment, one sinker 112, 113 and one wire rope 112a, 113a are provided for each support 212, 213, respectively.
  The wire ropes 112 a and 113 a connect the tips of the convex portions 212 a ′ and 213 a ′ provided on the upper portions of the supports 212 and 213 and the hooking members 114 provided on the upper surfaces of the sinkers 112 and 113.
  Each of the wire ropes 112a and 113a is stretched in a tensioned state.
[0036]
  With this configuration, the horizontal force F acting on the supports 212 and 213 is distributed (or shared) (or handled) to the wire ropes 112a and 113a and the sinkers 112 and 113. Since the horizontal force F that is applied to the bearing ropes 112a and 113a and the forces acting in the direction of the sinkers 112 and 113 is offset, the forces acting on the supports 212 and 213 are offset. The structures 212 and 213 can be simplified or miniaturized, and cost reductions such as material costs and construction costs can be achieved.
  In addition, since one end of the connecting members 112a and 113a can be connected to a place far from the water bottom B as compared with the first embodiment, a larger moment can be obtained. For example, as shown in FIG. , 113a can be reduced to one.
[0037]
  FIG. 3 is a schematic perspective view showing a third embodiment of the openable / closable harbor structure according to the present invention, and is a view showing a state in which a water channel (or channel) is closed as in FIG. 1 described above.
  In addition, the same code | symbol is attached | subjected to the member same as the prior art mentioned above.
[0038]
  As shown in FIG. 3, the openable / closable harbor structure 300 according to the present invention includes a face body 11, supports 12 and 13 disposed on both sides of the face body 11, and a second structure having the same structure as these supports. Support bodies 312 and 313, and connecting members 112a and 113a for connecting the support bodies 12 and 13 and the second support bodies 312 and 313, respectively, are provided.
  In FIG. 3, the left side of the face body 11, the support bodies 12 and 13, and the second support bodies 312 and 313 is the sea side (or the outside of the harbor), and the right side is the river side (or the inside of the harbor).
[0039]
  The second supports 312 and 313 are on the line connecting the support 12 and the support 13 and outside the supports 12 and 13 (on the side opposite to the water channel R or the face body 11). B. It is installed adjacent to.
  On the other hand, the connecting members 112a and 113a are, for example, wire ropes, and are connected to the retaining members 114 provided on the support bodies 12 and 13 and the second support bodies 312 and 313, respectively.
[0040]
  In the present embodiment, one second support 312 and 313 and two wire ropes 112a and 113a are provided for each support 12 and 13, respectively.
  One of the two wire ropes 112a and 113a includes a latching member 114 provided above the supports 12 and 13 and a latching member 114 provided above the second supports 312 and 313. It is connected. The other one of the two wire ropes 112 a and 113 a is a latch member 114 provided below the supports 12 and 13 and a latch provided below the second supports 312 and 313. The member 114 is connected.
  Each of these wire ropes 112a and 113a is stretched in a tensioned state.
[0041]
  With such a configuration, the horizontal force F acting on the support bodies 12 and 13 is distributed (or shared) (or shared) between the wire ropes 112a and 113a and the second support bodies 312 and 313. The horizontal force F handled by the bodies 12 and 13 is reduced (or the forces acting on the support bodies 12 and 13 are offset by the forces acting on the wire ropes 112a and 113a and the sinkers 112 and 113). Therefore, the structure of the support bodies 12 and 13 can be simplified or miniaturized, and cost reductions such as material costs and construction costs can be achieved.
  Moreover, since the structure which has the same structure (or the same) as the support bodies 12 and 13 as the 2nd support bodies 312 and 313 can be used and it can construct by the same construction method, construction of the structure for fixation Costs can be reduced and construction efficiency can be improved.
  Furthermore, since structures (fixing structures 112 and 113 and wire ropes 112a and 113a as shown in FIG. 1 or FIG. 2) are not installed at positions that cause waterway obstructions (or lane obstructions), the waterway ( Alternatively, the safety of the route) can be ensured.
[0042]
  Next, a fourth embodiment of the openable / closable harbor structure according to the present invention will be described. In the present embodiment, the breakwater W.2 is used instead of the second supports 312 and 313 in FIG. B. Is used.
  That is, the wire ropes (connection members) 112a and 113a are connected to the support bodies 12 and 13 and the breakwater W. B. It is hung (passed) between.
  One of the two wire ropes 112a and 113a includes a hook member 114 and a breakwater W. B. It connects with the latching member 114 provided above. The other one of the two wire ropes 112a and 113a includes a hooking member 114 and a breakwater W. B. It connects with the latching member 114 provided in the lower side.
  Each of these wire ropes 112a and 113a is stretched in a tensioned state.
[0043]
  Breakwater W. B. Is provided adjacent to (or in close proximity to) the supports 12 and 13 and is used for the existing breakwater that has already existed before the supports 12 and 13 are installed or the horizontal force F. A reinforced breakwater obtained by reinforcing an existing breakwater or a new breakwater newly established (constructed) together with the support bodies 12 and 13.
[0044]
  With such a configuration, the horizontal force F acting on the supports 12 and 13 is caused by the wire ropes 112a and 113a and the breakwater W. B. Is distributed (or shared) (or handled), and the horizontal force F of the support bodies 12 and 13 is reduced (or force acting in the direction of the wire ropes 112a and 113a and the sinkers 112 and 113). Therefore, the force acting on the support bodies 12 and 13 is canceled out), so that the structure of the support bodies 12 and 13 can be simplified or downsized, and the cost of materials and construction costs can be reduced. Can do.
  In addition, the existing breakwater W. B. Is used, this breakwater W. B. It is only necessary to provide the latching member 114 and connect the latching member 114 and the latching member 114 provided on the supports 12 and 13 with the wire ropes 112a and 113a. The cost can be further reduced.
  Furthermore, since structures (fixing structures 112 and 113 and wire ropes 112a and 113a as shown in FIG. 1 or FIG. 2) are not installed at positions that cause waterway obstructions (or lane obstructions), the waterway ( Alternatively, the safety of the route) can be ensured.
[0045]
  A fifth embodiment of the openable / closable harbor structure according to the present invention will be described with reference to FIG. In this embodiment, an actuator is interposed between the support and the fixing structure. That is, an actuator is provided between the connecting member, or between the connecting member and the fixing structure, or between the connecting member and the support.
  4 shows an example in which one actuator 501 is interposed in each of the wire ropes (connecting members) 112a and 113a of the embodiment shown in FIG.
[0046]
  As described above, by providing the actuators 501 on the respective wire ropes 112a and 113a, a predetermined tension is applied (applied) to each of the wire ropes 112a and 113a based on, for example, a tension measurement result obtained from a tension measuring device or the like. Can be. That is, an appropriate (uniform or uniform) force acts on the supports 12 and 13, and the supports 12 and 13 are used in an optimal state. Thereby, while the lifetime of the support bodies 12 and 13 can be extended, the structure of the support bodies 12 and 13 can be simplified or reduced in size.
  Further, the actuator 501 is operated in a state where the water channel (or the channel) is opened (the state in which the face body 11 is retracted or the face body 11 is removed) to release the tension state of the wire ropes 112a and 113a, that is, the wire ropes. Since 112a and 113a can be loosened, the force which always acts on the support bodies 12 and 13 can be reduced, and the lifetime of the support bodies 12 and 13 can be extended.
  In this embodiment, the actuators 501 are provided on the wire ropes 112a and 113a shown in FIG. 1, respectively. However, the present invention is not limited to this, and any of the above-described embodiments can be used. Can also be applied.
[0047]
  As shown in FIG. 5, the wire rope (connecting member) and the fixing structure described so far have the wire ropes 112a and 113a in the direction opposite to the direction T in which the face body 11 pulls the support bodies 12 and 13, respectively. It is advantageous if they are arranged to extend.
  Thereby, since the resultant force of the forces acting on the supports 12 and 13 is minimized, the structure of the supports 12 and 13 can be simplified or minimized, and further cost reductions such as material costs and construction costs can be achieved. be able to.
[0048]
  FIG. 6 is a schematic perspective view showing a sixth embodiment of an openable / closable harbor structure according to the present invention, and is a view showing a state in which a water channel (or a channel) is closed like FIG. 1 described above.
  In addition, the same code | symbol is attached | subjected to the member same as the prior art mentioned above.
[0049]
  As shown in FIG. 6, the openable / closable harbor structure 600 according to the present invention includes a face body 11, supports 12 and 13 disposed on both sides of the face body 11, and breakwaters (fixing structures) W. B. And a slant pile 601 extending from the water bottom B to the water bottom B.
  The slant pile 601 is a breakwater W. B. For example, one is provided for each. One end of the slant pile 601 is driven into the bottom B by a driving machine (not shown), and the other end is a breakwater W.D. B. Connected to the top of the. The slant pile 601 is substantially in the same direction as the plane body 11 pulling the support bodies 12 and 13 (in this embodiment, the river side (land side) with respect to the corresponding support bodies 12 and 13, that is, the support body 12 and the support body It is orthogonal to the line connecting the body 13 and extends in the direction in which the face 11 swells.
[0050]
  By providing such a diagonal pile 601, the breakwater W. B. The horizontal force F acting on the rock pile 601 is distributed (or shared) (or handled) by the slant pile 601, and the breakwater W. B. The horizontal force F of the B. (Or the force acting on the breakwater WB will be offset by the force acting in the direction of the inclined pile 601). B. The horizontal force can be shared by a large amount, the structure of the supports 12 and 13 can be simplified or miniaturized, and the cost of materials and construction can be reduced.
  In addition, the slant pile 601 is placed on the bottom B and the breakwater W. B. Therefore, further cost reductions such as material costs and construction costs can be achieved.
[0051]
  In addition, the support body demonstrated so far can also be made into the steel pipe pile foundation (for example, jacket structure) 20 as shown, for example in FIG.
  FIG. 7 is a perspective view showing a steel pipe pile foundation 20 in a bridge. Unlike the caisson-type foundation having a rigid structure, this steel pipe pile foundation 20 surrounds a main tower 21 constituting the main part of the bridge and its lower part. A jacket-type foundation 23 provided with a jacket leg 22 provided in this manner is installed on a water bottom ground 24, and a plurality of steel pipe piles 26, 26 are guided by a plurality of legs 25, 25, ... of the jacket leg 22. ,... Are constructed by placing them in the water bottom ground 24.
[0052]
  The steel pipe pile foundation 20 installed by the placing work can be used as the supports 12 and 13, so that the time required for construction can be greatly reduced. Since there is no possibility of leakage, it is possible to prevent the water (or seawater) around the support installation site from being soiled or contaminated.
[0053]
  Moreover, the wire rope which has been described as the connecting member can be a steel frame. By using a steel frame as the connecting member, the fixing structure and the support body are more rigidly (solidly) connected, so that the structure can withstand a greater horizontal force.
[0054]
  Furthermore, the number of connecting members is not limited to that of the above-described embodiment, and can be increased or decreased as necessary.
[0055]
  Furthermore, in the embodiment shown in FIG. 3, one second support is provided on the outside of the support, but the present invention is not limited to this, and there are two or more. You can also.
[0056]
  Furthermore, the fixing structure shown in FIGS. 1, 2 and 4 is not limited to a sinker, but is constructed as a caisson-type foundation, a steel footing foundation, an RC footing foundation, a steel pipe sheet pile, or a well foundation. It may be what was done.
[0057]
【The invention's effect】
  According to the openable / closable harbor structure of the present invention, the following effects can be obtained.
  According to the openable / closable harbor structure according to claim 1, the horizontal force acting on the support body is dispersed (or shared) (or shared) by the connecting member and the fixing structure, and the support body takes charge. Since the horizontal force is reduced, the structure of the support can be simplified or downsized, and costs such as material costs and construction costs can be reduced.
  Further, the force by which the support is pulled toward the fixing structure is adjusted by the actuator. Therefore, an appropriate (uniform or uniform) force can be applied to the support, and the support can be used in an optimum state, thereby extending the life of the support. In addition, the structure of the support can be simplified or downsized.
[0058]
  According to the openable / closable harbor structure according to claim 2, since one end of the connecting member is connected to a position far from the bottom of the water, a larger moment against the horizontal force can be obtained. The configuration or structure can be simplified, and the cost can be reduced.
[0059]
  According to the openable / closable harbor structure according to claim 3, since the fixing structure is a relatively inexpensive sinker, the cost can be reduced.
  In addition, after sinking the sinker to the bottom of the water, it is only necessary to connect the hooking member on the sinker side and the hooking member on the support side with the connecting member, so that the construction work can be easily performed and the associated costs Can also be suppressed.
[0060]
  According to the openable / closable port structure according to claim 4, since the fixing structure is a breakwater that is a rigid body, the horizontal force acting on the support body is more dispersed (or shared) by the connecting member and the fixing structure. ) (Or will be handled), and the horizontal force of the support will be further reduced, so that the structure of the support can be further simplified or reduced in size, such as material costs and construction costs. Cost can be further reduced.
[0061]
  According to the openable / closable harbor structure according to claim 5, a structure having the same (or the same) structure as the support located on both sides of the face piece is used as the fixing structure, and construction is performed by the same construction method. Therefore, the construction cost of the fixing structure can be suppressed and the construction efficiency can be improved.
[0062]
  Claim6According to the described openable / closable port structure, since the fixing structure and the connecting member are arranged in the direction in which the resultant force of the force acting on the support is minimized, the structure of the support is simplified or minimized. It is possible to further reduce costs such as material costs and construction costs.
[0063]
  Claim7According to the described openable / closable harbor structure, the horizontal force acting on the support is the breakwater W.W. B. Since it is distributed (or shared) (or handled) by the reinforcing slant piles, the horizontal force of the support is reduced, so that the structure of the support can be simplified or miniaturized. Cost reduction such as material costs and construction costs can be achieved.
  In addition, the breakwater W. B. Therefore, further cost reductions such as material costs and construction costs can be achieved.
[0064]
  Claim8According to the described openable / closable harbor structure, a steel pipe pile foundation that can be mainly installed only by placing work will be used as a support, so that the time required for construction can be greatly reduced, Construction can be carried out without polluting or contaminating the water (or seawater) around the support installation site.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of an openable / closable harbor structure according to the present invention, and is a schematic perspective view showing a state where a water channel (or channel) R is closed.
FIG. 2 is a diagram showing a second embodiment of an openable / closable harbor structure according to the present invention, and is a schematic perspective view showing a state in which a water channel (or channel) R is closed.
FIG. 3 is a diagram showing a third embodiment of an openable / closable harbor structure according to the present invention, and is a schematic perspective view showing a state in which a water channel (or channel) R is closed.
FIG. 4 is a diagram showing a fifth embodiment of an openable / closable harbor structure according to the present invention, and is a schematic perspective view showing a state in which a water channel (or channel) R is closed.
FIG. 5 is a plan view for explaining the best arrangement state of the fixing structure and the connecting member.
FIG. 6 is a diagram showing a sixth embodiment of an openable / closable harbor structure according to the present invention, and is a schematic perspective view showing a state in which a water channel (or channel) R is closed.
FIG. 7 is a perspective view showing an example of a steel pipe pile foundation.
FIG. 8 is a view showing an embodiment of a conventionally proposed open / close harbor structure, and is a schematic perspective view showing a state where a water channel (or channel) R is closed.
9 is a cross-sectional view taken along the line AA in FIG.
[Explanation of symbols]
  10 Openable port structure
  Eleven faces
  12 Support
  13 Support
  20 Steel pipe pile foundation
100 Openable port structure
112 Sinker (Fixing structure)
112a Wire rope (connection member)
113 Sinker (Fixing structure)
113a Wire rope (connection member)
200 Openable port structure
212 Support
212a Upper surface
212a 'convex part
213 Support
213a Upper surface
213a ′ convex portion
300 Openable port structure
500 Openable port structure
501 Actuator
600 Openable port structure
601 Diagonal pile
B Water bottom
W. B. breakwater

Claims (8)

A face piece that extends in the depth direction and in the horizontal direction;
And a support body on both sides for supporting both sides of the face body that receives the tension in the horizontal direction based on the water pressure due to the water level difference, and provided in a port, a fishing port, a river, a lake, or the like is that a retractable port structures,
Each of the supports is connected to a fixing structure via a connecting member ,
An opening / closing type harbor structure characterized in that an actuator is provided between the connecting member, or between the connecting member and the fixing structure, or between the connecting member and the support .   2. The openable / closable harbor structure according to claim 1, wherein the connecting member is interposed between a convex portion provided so as to project upward from an upper surface of the support and the fixing structure. object.   3. The openable / closable harbor structure according to claim 1, wherein the fixing structure is a sinker submerged in a water bottom.   The switchable port structure according to claim 1 or 2, wherein the fixing structure is an existing breakwater, a reinforced breakwater that is a reinforcement of an existing breakwater, or a newly built breakwater. object.   3. The openable / closable harbor structure according to claim 1, wherein the fixing structure is a structure similar to the support. The anchoring structure and said connecting member, one of the claims 1 to 5, characterized in that said face piece is arranged so that the connecting member extends in a direction substantially opposite to the direction of pulling the said support The openable port structure according to claim 1.   The openable / closable harbor structure according to claim 4, wherein each of the fixing structures is provided with a diagonal pile extending in a direction substantially the same as a direction in which the face body pulls the support body. The said support body consists of a steel pipe pile foundation, The opening-and-closing type harbor structure as described in any one of Claim 1 to 7 characterized by the above-mentioned.

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