JP3108761B2 - Multi-stage mooring pile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mooring pile, and more particularly to a multi-stage mooring pile suitable for mooring a ship such as a floating pier or a boat on a water surface having a fluctuating water level.

[0002]

2. Description of the Related Art With the recent active use of pleasure boats and the like, it is desired to provide mooring facilities for mooring these ships in rivers. Until now, from the viewpoint of river management, ship storage facilities have been permitted to be installed in areas where water level fluctuations are small, such as canal rivers and lakes that do not flood. In such areas, a mooring ring system for mooring ships to a mooring ring provided on the quay, a system for mooring ships to a floating pier connected to piles driven into the riverbed, and a mooring system for anchor mooring type floating piers And other methods have been used.

On the other hand, in order to cope with a shortage of storage facilities for ships and a remarkable increase in the number of unlicensed moored ships, river laws in river areas where large water level fluctuations occur, such as floods flowing down or being affected by storm surges, are required. It is required to establish standards for permitting the installation of mooring facilities based on the regulations (general technical standards required for river management).

[0004]

The above-mentioned mooring systems have the following problems when applied to a place where the water level fluctuates greatly. Problems of mooring ring system In general, the length of the rope connecting the riverbank and the ship is taken into account in consideration of the difference in water level (tidal level) in normal times. Is restrained by the rope length, and the ship is dragged into the water and sinks. On the other hand, if the rope length is set to be long even in normal times, the floating range of the ship becomes large, and the occupied area per one ship becomes large, and the number of ships that can be accommodated decreases.
Also, getting on and off the ship is poor.

Problems of Fixed Pile Mooring Method According to this mooring method, in order to cope with a large water level fluctuation such as a storm surge or a flood, even at the highest water level (planned flood level or planned high tide level), the mooring method is required. The top of the mooring piles must be sufficiently raised above these planned water levels so that the pier does not slip out. With such a structure, the projecting length of the pile at the lowest water level is 7
m or more, and such mooring piles stand in a large number in the river, which significantly impairs the landscape of the river.

Problems of anchor mooring method Since the length of the mooring rope connecting the anchor embedded in the riverbed and the floating pier needs to be set according to the state where the water level fluctuates the most, the floating pier is normally floating. A large possible range is required, which is not preferable. Especially at the estuary, the effect is remarkable because the direction of the flow is reversed by the ebb and flow of the tide. Also, it is difficult to secure access to the river banks and floating piers.

[0007] It is an object of the present invention to provide a multi-stage mooring pile that follows the fluctuation of the water level and is excellent in the scenery.

[0008]

The above object is achieved as follows. In other words, the effects of floods and storm surges
In river areas where large water level fluctuations occur
Mooring piles for mooring a definitive floating piers and ships, fixed to the bottom of the water
And vertically inserted into the lower pile
And a part of the lower pile is normal.
It protrudes above the water surface when the water level is high.
The floating pier or ship is moored on the lower pile above the water surface at high water level.
And the upper pile has a floating body inside . Therefore , the height of the pile can be moved up and down in accordance with the water level, which is preferable in view of the landscape. In addition, before Symbol mooring piles, in response to fluctuations in the water level, because that you stretch automatically, it is easy to manage and work, can follow to fluctuations in the rapid water level. Also <br/>, before Symbol mooring piles, piles on projecting above the water surface is, in the lower stake of the cylindrical fixed to water, it is inserted slidably
Because the that, the step of the upper pile lower end, since the pile inner surface side, are not de interfere with vertical movement of the pontoons due normal tidal fluctuations. Furthermore, since the previous SL on piles is provided with a floating body (float) inside, at a high water level, the float inside the upper pile is pushed up by the buoyancy, the upper pile is stretchable to fit the water level. For this reason, it is not necessary to largely depend on the buoyancy of the floating pier, and safe and secure expansion and contraction becomes possible.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are elevation views showing one embodiment of a multi-stage mooring pile according to the present invention. FIG. 1 shows a state in which an upper telescopic pile is stored in a lower fixed pile, and FIG. Shows a state in which the telescopic pile of FIG.
As shown in these figures, a lower pile 1 which is a lower fixed pile made of steel pipe is fixed to the water bottom 2 and is erected, and an upper pile 3 which is also an upper telescopic pile made of steel pipe is provided in the lower pile 1. It is stored. A top plate 4 is provided at the top of the upper pile 3. FIG.
In this case, the upper pile 3 is stored in the lower pile 1 up to the lower surface of the top plate 4, and a part of the lower pile 1 projects above the water surface. A floating pier 6 is connected to the lower pile 1 projecting above the water surface via an annular pile holder 5. Since the pile holder 5 has a roller (not shown) on the inside and can move up and down with respect to the lower pile 1, the low water level 7 indicated by a dotted line in the figure exceeds the high water level 8 in normal times. The pile holder 5
The floating pier 6 also rises to the high water level 9 at the time of rising water while pushing up the upper pile 3 by engaging with. When the water level becomes low, the upper pile 3 descends by its own weight as the floating pier 6 descends, and is stored in the lower pile 1.

According to the present embodiment, since the mooring pile is extendable and retractable, the height of the pile can be moved up and down by using the up and down movement of the floating pier due to the fluctuation of the water level. Therefore, it is not necessary to protrude the pile length unnecessarily above the water surface, which is preferable from the viewpoint of landscape.Also, it automatically expands and contracts in response to fluctuations in the water level, so that management and work are easy, and It can follow fluctuations. The following effects are obtained by inserting the upper pile into the lower pile. Since the step at the lower end of the upper pile is on the inner side of the pile, there is no hindrance to the vertical movement of the floating pier due to normal tide fluctuation. In addition, since the load under normal conditions is borne only by the outer lower pile, the design is clear. When the upper pile is set outside, there is also a problem that the load must be transmitted to the lower pile via the upper pile. As described later, it is easy to install a float inside the upper pile.

FIGS. 3 to 5 are detailed cross-sectional views of the above embodiment, in which a float is provided in the upper pile. FIG. 3 is an elevation view of a multi-stage mooring pile, and FIGS. It is the top view and side view of the floating pier which was done. As shown in FIG. 3, a float 10 is installed in an upper pile 3 made of steel pipe. The float 10 has a polyethylene coating filled with urethane. In the figure, two floats are provided below the filling material 11. The old Ota River with an estuary in Hiroshima City, Hiroshima Prefecture is shown as an example.
When the planned riverbed height 13 and the planned embankment height 14 are set for 2, the lower pile 1 fixed to the riverbed 13 alone floats between the average low tide level 15 and the normal high tide level (HWL) 16. An ordinary pile top 17 is set so that the pier 6 can move up and down, and an upper pile extension allowance 19 is set so that the upper pile 3 can extend and cope with the planned high tide level 18.

According to this embodiment, the high tide level (HW
L) The lower pile 1 responds to floods up to 16, and at higher tide, the upper pile 3 extends according to the water level. For example, if the weight of the upper pile is 150 kg and the float buoyancy is about 150 kg, the floating pier can be expanded and contracted without expectation. In this embodiment, for the corrosion prevention of piles, a super-thick film type epoxy coating is adopted from the riverbed intrusion of a certain length to the top end, and the lower pile top end is provided with a predetermined reinforcement to prevent the buckling of the curved portion. Performed during production. Further, the float is prevented from being deteriorated by oils by a polyethylene coating.

FIGS. 4 and 5 are a top view and a side view, respectively, of the floating pier. As shown in these figures, the floating pier 6 is connected to a multi-stage mooring pile 20 by a pile holder 5. The pile holder 5 is provided with a rotatable roller 21. The free rotation of the roller 21 allows the floating pier 6 to freely move up and down in conjunction with the water level. Further, a metal fitting 22 for tying a rope for mooring the ship is provided on the floating pier, and in this example, one ship 23 is moored on one side of the floating pier. In addition, as described above, it is preferable to insert the upper pile into the lower pile,
Conversely, the lower pile may be inserted into the upper pile. In this case, the pile holder is always engaged with the upper pile, and can move up and down without a step in the pile diameter. The above description and accompanying drawings each show an example of the embodiment of the present invention, and various modifications can be made from these embodiments.
Of course, the present invention is not limited to these examples.

[0014]

As described above, the multi-stage mooring pile of the present invention can be expanded and contracted according to the fluctuation of the water level, and can provide an excellent landscape.

[Brief description of the drawings]

FIG. 1 is an elevation view showing one embodiment of a multi-stage mooring pile according to the present invention.

FIG. 2 is an elevational view showing a state where the mooring pile shown in FIG. 1 is extended.

FIG. 3 is a detailed sectional view of an embodiment in which a float is provided in the upper pile of the present invention.

FIG. 4 is a top view of a floating pier connected to the multi-stage mooring pile of the present invention.

FIG. 5 is a side view of a floating pier connected to the multi-stage mooring pile according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 lower pile 2 water bottom 3 upper pile 4 top plate 5 pile holder 6 floating pier 7 low water level 8 normal high water level 9 high water level when rising water 10 float (floating body) 11 filling material 12 standard water level 13 planned riverbed height 14 embankment High 15 Average low tide level 16 Normal high tide level (HWL) 17 Normal pile top 18 Planned high tide 19 Upper pile extension allowance 20 Multi-stage mooring pile 21 Roller 22 Rope fastening bracket

──────────────────────────────────────────────────続 き Continuation of the front page (72) Takashi Mizuno Inventor Yachiyo Engineering Co., Ltd. 1-10-21 Nakameguro, Meguro-ku, Tokyo (56) References JP-A-4-185804 (JP, A) Kaihei 9-228315 (JP, A) Real Kaihei 4-92014 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02B 3/06 E02B 3/20, 3/24

Claims (1)

(57) [Claims] (1) Floods run down and are affected by storm surges
Una, mooring piles for anchoring the pontoons and ship in the area of the river a large level change occurs, is erected and fixed to the bottom of the water
A lower pile, and an upper pile movably inserted into the lower pile.
When part of the lower pile is normal high water level
As it protrudes above the water surface, the normal high water level
The floating pier or ship is moored to the lower pile on the water surface, and
A multi-stage mooring pile, wherein the upper pile has a floating body inside .