JP2967967B2 - Floating pier and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in a fishing port or a harbor, etc., facing a sea area with a relatively large difference in ebb and flow, for the convenience of getting on and off a ship, unloading and loading cargo, berthing a ship, and berthing. The present invention relates to a floating pier that is raised and lowered in response to tides and the like, and a method of constructing the pier.

[0002]

2. Description of the Related Art Conventionally, as a floating pier, a floating body (pontoon) constituting a pier deck portion has been loosely moored with a chain or the like, and this floating pier is subject to waves, wind pressure, or unevenness of an overhead load. It is easy to shake and lacks stability. Therefore, for example, Japanese Utility Model Application Laid-Open No. 2-10699
As disclosed in Japanese Patent Publication No. 8 and JP-A-2-89005, a floating pier has been proposed in which a floating body is supported so as to be able to ascend and descend by a supporting column such as a pile installed on the underwater ground. In this floating pier, a plurality of rollers are mounted on a side peripheral portion of a floating body via a roller support fitting so as to sandwich a support column in a horizontal direction.

The floating body used for the floating pier as described above is made of steel, concrete, plastic such as FRP, or wood, as described in, for example, Japanese Patent Application Laid-Open No. 2-24286. In addition, a plastic foam having a core material whose outer periphery is covered with concrete is known. In addition, a steel pipe pile or the like is used as the support column, and the upper portion of the column generally projects greatly from the water surface.

[0004]

As described above, in a conventional floating pier in which a floating body is supported up and down by a supporting column such as a pile which is cast on a submerged ground, a roller and its supporting bracket are provided. Must protrude laterally from the side periphery of the floating body, so the ship must be attached to the ship avoiding such rollers and support fittings. There is a danger of the ship colliding,
Even if a fender is attached to the side peripheral portion of the floating body, there is a problem that the roller and the support fitting interfere with each other, so that they cannot be attached continuously.

Further, the conventional floating jetty described above has a large floating pier used for yacht harbors or the like when the waves are large, especially when a floating body is used. The unloading and unloading of the cargo is troublesome, and in addition, since the support columns protrude greatly from the water surface, there is also a problem that it often interferes with unloading and unloading the cargo.

In view of the above, the present invention does not require the provision of protrusions such as rollers and supporting brackets on the side peripheral portion of the floating body, and therefore can reliably avoid collision between the boat and the protrusions. The ship can be safely and easily berthed, and the height of the floating body can be controlled,
To provide a floating pier that can be easily loaded and unloaded and unloaded and loaded cargo to improve safety, and a method of constructing such a floating pier in a reasonably short time. The purpose is to provide.

[0007]

In order to achieve the above-mentioned object, a floating pier according to the present invention is provided with a floating body which constitutes a pier deck portion and is provided with a plurality of mooring holes penetrating vertically. A sleeve member inserted into the mooring hole with its lower end protruding downward from the bottom surface of the floating body,
A top plate attached to the upper surface of the floating body so as to close the upper opening of the mooring hole, a support pile standing upright on the underwater ground, and the mooring connected in series to the support pile A movement prevention pillar inserted into the sleeve member fixed to the hole, and a cushion member having a predetermined thickness disposed between the top plate and the movement prevention pillar are provided. The floating body is guided by the movement prevention column and moves up and down in a substantially vertical direction, and when the floating body descends to a predetermined height position, the top plate and the top of the movement prevention column are interposed through the cushion member. It is characterized by being brought into contact.

[0008]

[0009]

The method for constructing a floating pier according to the present invention is for constructing the floating pier of the above-described example. Specifically, the method is such that mooring holes are previously penetrated at a plurality of locations in the vertical direction. Preparing a perforated floating body, towing the floating body to a place to be moored, and, in a place where the floating body should be moored, preliminarily aligning the position of each mooring hole of the floating body with a support pile substantially on the underwater ground; Vertically casting, attaching a first adjustment plate wider than the top surface to the top surface of the support pile, and attaching a sleeve member to each of the mooring holes of the floating body so that the lower end thereof is lower than the bottom surface of the floating body. A step of inserting in a state of projecting downward, and attaching a second adjustment plate wider than the bottom surface to the bottom surface of each movement prevention column to be connected to the support pile installed in the previous step; Each sleeve with pillars fixed to the floating body from underwater Inserting the first adjustment plate and the second adjustment plate respectively attached to the respective support piles and the movement prevention columns while adjusting the position of the floating body, and sequentially connecting the first adjustment plate and the second adjustment plate while facing each other; Fixing the cushion member to the lower surface of the top plate, and attaching the top plate to the upper surface of the floating body so as to close the upper opening of the mooring hole.

[0011]

[Operation] In the floating pier according to the present invention having the above-described structure, since the upper portion of the support column is inserted into the floating body, the protrusions such as the rollers and the support metal fittings are provided on the side periphery of the floating body. It does not need to be provided. Therefore, collisions between the ship and those protruding objects can be reliably avoided, and the ship can be safely and easily berthed. In addition, since the support columns do not protrude from the upper surface of the floating body, operations such as lifting and unloading cargo can be performed. It doesn't get in the way.

When the floating body descends to a predetermined height position, the upper bottom of the mooring hole and the top of the support column are brought into contact with each other, so that the floating body does not sink below this position.
Therefore, by appropriately adjusting the distance between the upper bottom of the mooring hole and the top of the support column, the descending height of the floating body can be controlled, and convenience such as getting on and off the ship and unloading the cargo can be achieved.

[0013] Further, by arranging a cushioning material between the top plate constituting the upper bottom of the mooring hole and the top of the support column, the impact at the time of contact between the top of the support column and the top plate is reduced. Increases safety. On the other hand, in the method of constructing a floating pier according to the present invention, the support pillar is divided into a support pile and a movement prevention pillar, and the support pile is placed on the underwater ground and the movement prevention pillar is inserted into the floating body. Separately, the connection between the support stake and the movement prevention column is performed via the first adjustment plate and the second adjustment plate. Therefore, even if the positions of the support piles are slightly shifted, they can be connected in a state where the positions of the movement prevention columns are corrected to appropriate positions.

Further, since the upper bottom portion of the mooring hole is constituted by a top plate to which a cushion member is fixed and can be attached after manufacturing the floating body, the floating body itself is provided with a mooring hole penetrating vertically. In this case, the manufacture of the floating body and the work of assembling each member to a predetermined position are facilitated. By doing so, the construction work of the floating pier can be performed in a reasonably short time.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a floating pier according to the present invention. In the drawing, the floating pier 1 has a supporting structure comprising a floating body 5, a supporting pile 21 and a movement preventing column 25 constituting a pier deck portion as a main part. With pillars.

The floating body 5 has a core 6 made of plastic foam and an outer skin 7 made of fiber reinforced concrete.
Here, the core 6 is made of, for example, expanded polystyrene (12
kg / m ³ ) (about 2 m in length, about 1 m in width,
The thickness is about 0.5m), which is arranged side by side up, down, left and right, and the outer periphery is filled with fiber reinforced concrete and encased. The size is about 5m in length, about 5m in width, and about 1m in thickness. I have.

At the corner of the floating body 5, a mooring hole 8 having a circular cross section is formed so as to penetrate vertically (FIG. 2), and a concave portion 7a is formed around the upper opening of the mooring hole 8. (Fig. 3). A reinforcing member 9 made of a cylindrical steel material (SGP) is fixed to the inner periphery of the mooring hole 8, and a buffer spacer 11 made of an elastic material such as rubber is fixed to the inner periphery of the reinforcing member 9. A sleeve member 12 is provided on the inner periphery of the spacer 11 so that its lower end is 0.5
It is inserted so as to protrude downward by about m. A flange portion 12a to be fitted into the concave portion 7a is provided at an upper end edge of the sleeve member 12, and a metal bearing 14 which is in contact with an outer periphery of the movement preventing column 25 is fixed to an inner lower portion of the sleeve member 12, and an upper portion thereof is fixed. A ring-shaped guide member 24 for helping the floating body 5 to move up and down in the vertical direction along the movement preventing column 25 is fixed to the fin.

A top plate 17 made of a steel plate (SS) is fixed to the recess 7a with a flat head screw 13 so as to close the upper opening of the sleeve member 12. In this case, the upper surface of the sleeve member 12 is flush with the upper surface of the floating body 5, and the cushion member 18 made of an elastic material such as rubber is fixed to the lower surface of the top plate 17. The top plate 17 and the cushion member 18 form an upper bottom portion of the mooring hole 8, and an air vent hole 19 is formed at a central portion thereof.

On the other hand, the support pile 21 is formed of a steel pipe pile, and is erected on the underwater ground Q so as to be located substantially directly below the sleeve member 12 fixed to the floating body 5. The movement prevention column 25 is welded to the upper surface of the support pile 21 in series with the first adjustment plate 23 wider than the upper surface of the support pile 21 and the lower surface of the movement prevention column 25. A second width wider than the lower surface of the movement prevention column 25
, And the upper part of the movement preventing column 25 is inserted into the sleeve member 12.

When the sea surface indicated by P in FIG. 2 is at the position shown in FIG. 2 (for example, at high tide), the top of the movement preventing column 25 inserted into the sleeve member 12 and the upper bottom of the mooring hole 8 are formed. The cushion member 18 is separated from the lower surface of the cushion member 18 by a distance S. In the floating pier 1 of the present embodiment having such a configuration,
The floating body 5 is guided by the movement prevention column 25 in accordance with the tide and the like and rises and descends in a substantially vertical direction.
When the is lowered to a predetermined height position, the top plate 19 and the top of the movement preventing column 25 come into contact with each other via the cushion member 18.

The floating pier 1 having the above structure is constructed from the following steps. That is, a step of preparing the floating body 1 having the above configuration and towing the floating body 1 to a place to be moored. A step of placing the support pile 21 substantially vertically in a place where the floating body 1 is to be moored by using a pile driving machine or the like in advance in accordance with the position of each mooring hole 8 of the floating body 1. Welding the first adjustment plate 23 to the top surface of the support pile 21; A step of inserting the sleeve member 12 into each of the mooring holes 8 of the floating body 5 with its lower end protruding below the bottom surface of the floating body 5. A second adjustment plate 27 is provided on the lower surface of each of the movement preventing columns 25 to be connected to the support pile 21 that has been cast in the previous step.
And inserting the movement preventing columns 25 from the water into the respective sleeve members 12 fixed to the floating body 5. While adjusting the position of the floating body 5, each support pile 2
And a step of sequentially joining the first adjustment plate 23 and the second adjustment plate 27 respectively attached to the first and second movement prevention columns 25 so as to face each other. Fixing the cushion member 19 to the lower surface of the top plate 17 and attaching the top plate 17 to the concave portion 7a of the floating body so as to close the upper opening of the mooring hole 8;

In the floating pier 1 according to the present embodiment having the above-described structure, the movement preventing pillar 25 constituting the upper part of the supporting pillar is inserted into the floating body 5, so that the roller is provided on the side peripheral portion of the floating body 5. Also, there is no need to provide a protrusion such as a support metal fitting.
Therefore, collisions between the ship and those protrusions can be reliably avoided, and the ship can safely and easily berth,
Since the movement preventing column 25 does not protrude from the upper surface of the floating body 5, it does not hinder the operation of lifting and lowering the cargo.

When the floating body 5 is lowered to a predetermined height, the cushion member 1 forming the upper bottom of the mooring hole 8 is formed.
The floating body 5 does not sink below such a position since the top 8 of the movement prevention column 25 is in contact with the top of the movement prevention column 25. Therefore,
By appropriately changing the thickness and the like of the top plate 17 and the cushion member 18, the separation distance S between the top of the movement prevention column 25 and the cushion member 18 can be adjusted, and thereby the height of the floating body 5 can be controlled. In addition, convenience such as getting on and off the ship and unloading and loading cargo can be achieved.

Further, the cushioning member 18 is arranged between the top plate 17 constituting the upper bottom of the mooring hole 8 and the top of the movement preventing column 25, so that the top of the movement preventing column 25 and the top plate 18 are in contact with each other. Impact at the time of contact is reduced, and safety is increased. On the other hand, in the method of constructing the floating pier according to the present embodiment, the support pillar is divided into the support pile 21 and the movement prevention pillar 25, and the support pile 21 is placed on the underwater ground and the movement prevention pillar 2.
5 are separately inserted into the floating body 5, and the connection between the support pile 21 and the movement prevention column 25 is made by the first adjustment plate 2.
This is performed via the third and second adjustment plates 27. Therefore, even if the placement positions of the support piles 21 are slightly shifted, they can be connected in a state where the positions of the movement prevention columns 25 are corrected to appropriate positions.

The upper bottom of the mooring hole 8 is constituted by a top plate 17 to which a cushion member 18 is fixed.
Since the floating body 5 is attached after manufacture, the floating body 5 itself may be provided with a mooring hole 8 that penetrates the floating body 5 vertically, which facilitates the manufacture of the floating body 5 and the work of assembling each member to a predetermined position. Become.

By doing so, the construction work of the floating pier can be performed in a reasonably short time. In addition,
As shown in FIG. 4, the first adjustment plate 23 and the second adjustment plate
By interposing a mount member 28 made of hard rubber or the like between the adjustment plate 27 and the adjustment plate 27, impacts on the floating body 5 in the horizontal and vertical directions can be reduced.

[0027]

As will be understood from the above description, according to the present invention, it is not necessary to provide a roller and a protruding member such as a support bracket on the side peripheral portion of the floating body, and accordingly, the ship and the protruding portions thereof are not required. The ship can be safely and easily berthed by avoiding collisions with objects, and the height of the floating body can be controlled, making it easier to get on and off the ship and unload cargo. It is possible to provide a floating pier that can improve the performance. Further, according to the method for constructing a floating pier according to the present invention, an effect is obtained that the floating pier can be constructed in a reasonably short time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a floating pier according to the present invention.

FIG. 2 is a sectional view of a main part of the embodiment.

FIG. 3 is a perspective view of the embodiment.

FIG. 4 is a side view of a main part showing a modification.

[Explanation of symbols]

 1-Floating Pier 5-Floating Body 12-Sleeve Member 14-Bearing 17-Top Plate 18-Cushion Member 21-Support Pile 23-First Adjustment Plate 25-Movement Prevention Column 27-Second Adjustment Plate P-Sea Surface

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B63B 21/00, 21/50 B63B 35/00, 35/34, 35/44

Claims (2)

(57) [Claims] 1. A floating body constituting a pier deck portion, wherein mooring holes are drilled at a plurality of locations so as to penetrate vertically, and a state in which a lower end portion of the mooring hole projects downward from a bottom surface of the floating body. A top plate attached to the upper surface of the floating body so as to close the upper opening of the mooring hole; a support pile standing substantially vertically on the underwater ground; And a cushion member having a predetermined thickness disposed between the top plate and the movement preventing column. The floating body is guided by the movement prevention column in accordance with the tide, etc., and moves up and down in a substantially vertical direction.When the floating body descends to a predetermined height position, the top plate and the movement prevention column The top is A floating pier designed to be in contact with the vehicle via a member. 2. The method for constructing a floating pier according to claim 1, comprising the following steps a to g. a. A step of preparing a floating body previously drilled at a plurality of locations so that mooring holes penetrate vertically and towing the floating body to a place to be moored. b. A step of placing a support pile approximately vertically in a place where the floating body is to be moored, in advance in accordance with the position of each mooring hole of the floating body. c. Attaching a first adjustment plate wider than the top surface to the top surface of the support pile. d. Inserting a sleeve member into each of the mooring holes of the floating body with its lower end protruding below the bottom surface of the floating body. e. A second adjusting plate wider than the bottom surface is attached to the bottom surface of each movement prevention column to be connected to the support pile installed in the previous step, and each movement prevention column is fixed to the floating body from underwater. Step of inserting into a member. f. A step of sequentially joining the first adjusting plate and the second adjusting plate attached to each of the support piles and the movement preventing column while adjusting the position of the floating body so as to face each other. g. Fixing a cushion member to the lower surface of the top plate, and attaching the top plate to the upper surface of the floating body so as to close the upper opening of the mooring hole.