JP4565600B2 - Wave-dissipating floating pier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wave-dissipating floating pier suitable for a mooring facility for boats and the like, and in particular, a plurality of horizontal piers are arranged on a vertical pier extending from the land to the sea, and arranged at the forefront of many mooring facilities such as boats. This is related to a wave-dissipating floating pier suitable for a horizontal pier.
[0002]
[Prior art]
In the conventional floating pier, various types have been devised as floating piers having a wave-dissipating function. One of them is JP-A-6-108416. This is because a plurality of divided floats are arranged around the lower surface of the deck, and a horizontal frame is passed between the divided floats below the water surface. It is the structure arrange | positioned so that a slit may be formed. In this case, the horizontal frame is moderately inclined and attached so that the horizontal frame has a gentle inclination, thereby providing a wave-dissipating function.
[0003]
[Problems to be solved by the invention]
In a mooring facility such as a large number of boats with a plurality of horizontal piers arranged on a vertical pier that extends from the land to the sea, the tip of the mooring facility is caused by waves from a boat that sails near the tip of the mooring facility. There is a problem that the floating piers and moored vessels of the entire facility sways. In order to suppress this, a floating pier with a wave-dissipating function is effective. However, the conventional floating pier with a wave-dissipating function is arranged so that many plate-like materials form slits in a horizontal frame. Therefore, there is a problem that the configuration becomes quite complicated. The present invention provides a floating pier having a simple structure and an effective wave-dissipating effect as compared with such a conventional floating pier.
[0004]
[Means for Solving the Problems]
The extinguishing type floating pier according to claim 1 of the present invention is a wave extinguishing type floating pier having a deck and a plurality of wave extinguishing film bodies provided below the deck, wherein the plurality of wave extinguishing film bodies. Are arranged in the length direction of the deck, and only the upper part of the wave-dissipating film body is in a state where the upper part of the wave-dissipating film body is wide and the lower part is narrowed, and the intermediate part hangs downward. A ballast pipe extending in the length direction of the deck is provided at the lower end of the wave-dissipating film body, and when the wave-dissipating film body is submerged in water, a seawater layer divided by the wave-dissipating film body is To be formed.
[0005]
Further, the wave-dissipating floating pier according to claim 2 of the present invention is the wave-dissipating floating pier according to claim 1, wherein the length of the deck extends along both ends in the width direction of the deck below the deck. A plurality of floats arranged in the vertical direction are provided.
[0006]
Further, in the wave-dissipating floating pier of the present invention, the wave-dissipating film body includes the facing film in a state in which both ends of one water-resistant film are attached to the lower side of the floating pier and the middle part hangs downward. The ballast pipe is formed and held in the respective lower ends of the sagging film bodies.
[0007]
This simplifies the structure of the wave-absorbing membrane body that forms a seawater layer between the membranes, as compared to the case where the facing membranes are constituted by separate water-resistant membranes, and the ballast pipe to the water-resistant membranes. The holding structure is simplified.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. 1 to 6 show one embodiment of the present invention. FIG. 1 is an external view of the wave-dissipating floating pier of the present invention, FIG. 2 is a plane explanatory view of the wave-dissipating floating pier of the present invention, and FIG. 3 is a side view of the wave-dissipating floating pier of the present invention. FIG. 5 is an enlarged view of a section D in FIG. 4, and FIG. 6 is an explanatory view of a mooring facility such as a boat to which the wave-dissipating floating pier of the present invention is applied. .
[0009]
The wave-dissipating floating jetty of the present invention has an excellent wave-dissipating function and has various applications. Among them, in particular, a plurality of horizontal jetties are arranged with respect to a vertical jetty extending from land to the sea. In a mooring facility such as a boat that is suitable for mooring a large number of boats, etc., it is suitable as a floating pier that is arranged next to the forefront. Hereinafter, the case where the embodiment of the present invention is applied to a mooring facility such as a boat will be described with reference to the drawings.
[0010]
In the wave-dissipating floating pier 1 of the present invention, a row of a plurality of wave-dissipating film bodies 10 whose lower portions are submerged in water are arranged in the lower central portion of the floating pier, and each wave-dissipating film body 10 is spaced. A seawater layer is formed between the membranes facing each other, and a ballast pipe extending in the lateral length direction of the wave-dissipating film body 10 is provided at each lower end portion of the wave-dissipating film body 10. As one form, in the floating pier with a plurality of floats arranged on the lower side of the deck, the wave-dissipating floating pier 1 of the present invention has a plurality of floats 7 forming left and right float rows along the left and right ends of the deck 2. In this manner, a plurality of wave-dissipating film body 10 rows arranged in the length direction of the deck 2 and between the left and right float rows and the bottom portion of the deck 2 being submerged in water are parallel to the left and right float rows. Each wave-dissipating film body 10 forms a seawater layer between the films 9 and 9 facing each other with a space between them, and at the lower end of each wave-dissipating film body 10 in the length direction of the deck 2 In this configuration, an extended ballast pipe 12 is provided.
[0011]
One specific embodiment of this will be described. Reference numeral 1 denotes a wave-dissipating floating pier of the present invention having a rectangular shape with a width S and a length L. 2 is a deck constituting the floor of this pier, and has a frame 3 consisting of a main frame 3A that goes around the peripheral edge and a sub-frame 3B that extends between the main frames 3A. The reinforcing material 6 provided in parallel is provided on the subframe 3B, and a number of deck panels (floor boards) 4 that are long in the width S direction of the deck 2 across the left and right of the main frame 3A are placed on the reinforcing material 6 on the deck 2. Are arranged in a plane in the length L direction. Reference numeral 5 denotes a protective rubber attached along the side surface of the frame 3. Reference numeral 7 denotes a float attached to the lower side of the deck 2 and is fixed to the lower surface of the subframe 3B with bolts 8. The floats 7 are arranged in the length direction of the deck 2 with appropriate intervals so that the plurality of floats 7 form left and right float rows along the left and right ends of the deck 2. The float 7 is a floating body made of metal or plastic filled with a foam. The deck 2 and the float 7 constitute a floating pier.
[0012]
Reference numeral 10 denotes a wave-dissipating film body, and a plurality of wave-dissipating film bodies 10 are arranged in a substantially straight line in the length L direction of the deck 2 between the left and right float rows and in the lower center portion of the deck 2.
The wave-dissipating film body 10 forms a pair of water-resistant films 9 and 9 facing each other with a space therebetween, and has a longitudinal dimension in which more than half of the longitudinal length is submerged in water. The upper parts of the pair of films 9 and 9 are fixed to the lower surface of the subframe 3B with bolts 11, and the distance between the pair of films 9 and 9 is such that the upper part is wide and the lower part is narrowed. In addition, the distance between the facing membranes 9 and 9 is open in the length L direction of the deck 2, so that the seawater entering between the facing membranes 9 and 9 is separated from the surrounding seawater by the membranes 9 and 9. Forming a layer of seawater. This seawater layer has a function of a weight for keeping the wave-dissipating film itself submerged in the sea, and a function of attenuating the acting force of the waves due to the thickness freely changing due to the bending of the films 9 and 9 by the waves. It is a part to do.
[0013]
The wave-dissipating film body 10 may be composed of a pair of facing films 9 and 9 as separate films. However, as a preferred embodiment, both ends of one water-resistant film are bolts 11 below the deck 2. There is a method of forming the membranes 9 and 9 facing each other with the intermediate portion hanging downward. In the latter case, each wave-dissipating film body 10 is a film made of plastics, and it is necessary to maintain a sufficient strength even when it receives a wave. And a high-density polyethylene film having a thickness of 1.5 mm so as to have rigidity, and are arranged in the length direction of the deck 2 in a substantially straight line.
As shown in FIG. 4, the upper ends of the films 9 and 9 are fixed to the subframe 3 </ b> B with bolts 11 while being bent along the rail member 14 having an L-shaped cross section so that they are not easily damaged.
[0014]
Each lower end portion of the wave-absorbing film body 10 is connected by a ballast pipe 12 extending in the length direction of the deck 2. Specifically, the ballast pipe 12 is disposed so as to extend into the lower end of each sagging film body 10, and the bolt 13 penetrates the ballast pipe 12 and the lower end of the water-resistant film of the wave-absorbing film body 10 vertically. The ballast pipe 12 is fixed to the wave-dissipating film body 10 with a nut that is screwed onto the wave-stopping film body 10. The ballast pipe 12 is a hollow cylindrical pipe made of metal or plastics, for example, open at both ends so that seawater can enter the inside, but to serve as a weight for sinking the wave-dissipating film body 10 in the sea. Is preferably made of metal, but in the case of plastics, an appropriate weight may be added inside. The distance between the pair of membranes 9 and 9 is maintained in a state where the ballast pipe 12 is attached and the upper portion is wide and the lower portion is narrowed as shown in FIG.
[0015]
As a place where the wave-dissipating floating pier 1 of the present invention is applied, as shown in FIG. 6, a plurality of horizontal piers 21 are arranged on a vertical pier 20 extending from the land to the sea, and a large number of boats 22 and the like are moored. There are facilities. In this, by applying the wave-dissipating floating pier 1 of the present invention to the horizontal pier 23 arranged at the forefront, pleasure boats and other ships (these are denoted by reference numeral 24) that come and go near the facility. Even if the wave generated by (shown) reaches the jetty 23, that is, the wave-dissipating floating jetty 1, the jetty can be prevented from shaking.
[0016]
That is, in FIG. 6, the waves generated when the pleasure boat 24 travels from right to left reach the wave-dissipating floating pier 1 sequentially from right to left. In this case, first, this wave collides with the wave-dissipating film body 10 at the right end. Due to this collision, one of the membranes 9 and 9 that has received the wave is bent while pushing the seawater layer between the membranes 9 and 9 facing each other. The pushed sea water moves to the adjacent wave-dissipating film body 10 while pressing the other film 9 of the films 9 and 9 and rising the water level between the films 9 and 9. A wave-dissipating action is achieved by this series of wave buffering actions. As shown in FIG. 4, the gap between the pair of membranes 9 and 9 has a shape in which the upper portion is wide and the lower portion is narrowed. The action is effective. Moreover, since the seawater layer between the membranes 9 and 9 and the ballast pipe 12 act to suppress the movement of the wave-absorbing membrane body 10, it also functions as a weight.
[0017]
Thus, in addition to the action of the weight of the ballast pipe 12, the seawater layer between the membranes 9, 9 acts as a weight of the wave-absorbing film body 10 and acts as a wave buffer to suppress the swing of the deck 2.
On the other hand, since each wave-dissipating film body 10 is connected by the ballast pipe 12, when the waves generated by the progression of the pleasure boat 24 and the like sequentially collide with the wave-dissipating film body 10, The movement of the pushed wave-dissipating film body 10 is suppressed by the adjacent wave-dissipating film body 10 that has not yet been pushed by the waves. For this reason, the extra movement of the wave-dissipating film body 10 pushed by the waves, that is, the pushing of the wave-dissipating film body 10 is restricted, and a wave-dissipating effect is obtained. In this way, the seawater layer between the membranes 9 and 9 facing the bending of the membrane 9 performs the action of the weight of the wave-absorbing membrane body and the action of wave buffering, and the wave-absorbing membrane body 10 connected by the ballast pipe 12. Due to the mutual mutual restraining of the shaking, the shaking of the floating pier 1 due to waves is suppressed.
[0018]
By such an action, the shaking of the wave-dissipating floating jetty 1, that is, the horizontal jetty 23 is reduced. Therefore, the jetty in the facility of FIG. 6 is less likely to be shaken, which is preferable for those who use this jetty. In addition, the wave-dissipating floating pier 1 of the present invention is a combination facility of a vertical pier 20 and a plurality of horizontal piers 21 extending from the land to the sea as shown in FIG. By adopting not only the horizontal pier 23 arranged at the cutting edge but also other horizontal piers 21 and also the vertical pier 20, a good wave-dissipating floating pier facility is obtained.
[0019]
As one embodiment of the wave-dissipating floating pier 1 of the present invention, the deck 2 has a width S of about 2 m and a length L of 9.3 m, and the float 7 has a length of the deck 2. The length in the L direction is 1.8 m, the width is 70 cm, and the height is 43 cm. The wave-dissipating film body 10 has a height of about 2.3 m and a width (the length of the deck 2 in the length L direction). Is about 2m and about 1.8m thick and is made of 1.5mm thick polyethylene film, etc. Each deck 2 has four floats 7 at the left and right end parts at almost equal intervals. The wave-dissipating film body 10 is arranged in a straight line in a state where four of about 2 m and one of about 1.3 m are close to or in contact with each other, and the lower part of the wave-dissipating film body 10 is submerged in water by about 2 m. Is designed. As a result, a good wave canceling function can be exhibited.
[0020]
In the above, each wave-dissipating film body 10 is in a state of being connected by a ballast pipe 12 that is attached so as to extend into the lower end of each drooping film body 10. As another embodiment, the ballast pipe 12 extending in the length direction of the deck 2 can be divided for each wave-dissipating film body 10. In this case, a ballast pipe 12 having a length substantially corresponding to the lateral length of each wave-dissipating film body 10 is prepared, and each wave-dissipating film body 10 includes a bolt 13 penetrating the lower end portion of the water-resistant film vertically. What is necessary is just to fix the ballast pipe 12 to each wave-dissipating film body 10 with the nut screwed together.
[0021]
In this divided configuration, each wave-dissipating film body 10 moves independently of the structure connected by the ballast pipe 12, but when waves collide with the wave-dissipating film body 10, One of the membranes 9 that received the wave was bent while pushing the seawater layer between the facing membranes 9, 9, and the pushed seawater pressed the other membrane 9 of the membranes 9, 9 and the membrane 9, 9 The water level rises between 9 and moves toward the adjacent wave-dissipating film body 10. A wave-dissipating action is achieved by this series of wave buffering actions. This is the same as the case where the ballast pipe 12 is configured to extend over each wave-absorbing film body 10. In this manner, the wave-dissipating film body 10 pushed by the waves is subjected to the action of the weight of the wave-dissipating film body and the action of wave buffering by the seawater layer between the films 9 and 9 facing the bending of the film 9. The action of the weight of the ballast pipe 12 causes a wave-dissipating action, and the swinging of the floating pier 1 due to the waves is suppressed.
[0022]
In the above embodiment, a floating pier is constituted by the deck 2 having a configuration in which a number of deck panels (floor boards) 4 are arranged in a plane and the float 7 attached to the bottom thereof. The box-shaped floating pier that is formed into a box shape and also used as a float, or a box-type floating pier that is filled with foam in the interior hollow or the interior 2 is formed into a plurality of box shapes and is used as a float. Alternatively, a box-type floating jetty bridge formed by serially connecting foam filling materials in the hollow interior, and the row of wave-dissipating film bodies 10 arranged at the center of the lower surface of the box-type floating jetty bridge as described above Good. In this case, the same operation and effect as described above can be obtained.
[0023]
The present invention is not limited to the above-described embodiment, and various modifications can be considered without departing from the technical scope of the present invention, and the various embodiments related thereto are included.
[0024]
【The invention's effect】
According to the first aspect of the invention, the one membrane that has received the waves generated by a boat or the like sailing in the vicinity bends while pushing the seawater layer between the facing membranes. The pushed seawater deflects the other membrane and moves in the direction of the adjacent wave-dissipating membrane body. In this way, the wave-dissipating effect is obtained while suppressing the shaking of the wave-dissipating film body by the action of the weight of the wave-dissipating film body by the seawater layer between the films and the action of wave buffering and the action of the weight of the ballast pipe.
[0025]
In addition, by adopting a configuration in which each wave-dissipating film body is connected by a ballast pipe, when the waves collide with the wave-dissipating film body in order, the wave-dissipating film body pushed by the wave is adjacent to the wave-dissipating film body. Since the movement is suppressed by the corrugated film body, the wave-dissipating film bodies connected by the ballast pipes have the effect of suppressing the shaking, and the effect of suppressing the shaking of the floating jetty due to the waves is obtained.
[0026]
According to the second invention, the structure of the wave-dissipating film body for forming a seawater layer between the films is simplified and the water-resistant film is compared with the case where the facing film is constituted by separate water-resistant films. The structure for holding the ballast pipe is simplified.
[Brief description of the drawings]
FIG. 1 is an explanatory view of the appearance of a wave-dissipating floating pier of the present invention.
FIG. 2 is an explanatory plan view of the wave-dissipating floating pier of the present invention.
FIG. 3 is a side view of the wave-dissipating floating pier of the present invention.
4 is a cross-sectional explanatory view taken along a line AA in FIG. 2;
FIG. 5 is an enlarged view of a portion D in FIG. 4;
FIG. 6 is an explanatory diagram of a mooring facility such as a boat to which the wave-dissipating floating pier of the present invention is applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Wave-dissipating floating pier 2 ... Deck 3 ... Frame 4 ... Deck membrane 7 ... Float 8 ... Bolt 9 ... Confronting membrane 10 ... Wave-dissipating membrane body 11 ... Bolt 12 ... Ballast pipe 13 ... bolt

Claims (2)

Deck,
A wave-dissipating floating pier having a plurality of wave-dissipating film bodies provided below the deck,
The plurality of wave-absorbing film bodies are arranged in a length direction of the deck,
Only the upper part of the wave-dissipating film body is fixed to the deck so that the middle part of the wave-dissipating film body has a shape in which the upper part is wide and the lower part is narrowed and the middle part hangs downward.
A ballast pipe extending in the length direction of the deck is provided at the lower end of the wave-dissipating film body,
A wave-dissipating floating jetty characterized in that when the wave-dissipating film body is submerged in water, a seawater layer divided by the wave-dissipating film body is formed . 2. The wave-dissipating floating jetty bridge according to claim 1, wherein a plurality of floats arranged in the length direction of the deck are provided below the deck along both ends in the width direction of the deck .

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