JPH0540088Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a floating pier installed in a port or the like, and more specifically to a floating pier having a scuttling device.

[Conventional technology]

Generally, a floating pier provided in a port or the like is composed of a box-shaped floating body made of steel or reinforced concrete, and is moored by a mooring device such as a mooring cable or a pile.

[The problem that the idea aims to solve]

By the way, in conventional floating jetties, the floating jetty does not reach a predetermined tide level or water level due to the influence of external forces such as tsunamis.
Specifically, when the mooring device rises to a pre-specified high tide level or high water level such as during high tide, the mooring device is destroyed by the buoyancy, causing the floating pier to drift, resulting in damage to moored ships, port facilities, or surrounding areas. There are problems such as destruction of facilities, or even damage to the floating pier itself due to driftwood getting caught on the pier.

[Means for solving problems]

The present invention was made in order to solve the above-mentioned conventional problems.A through hole is provided at the bottom of a box-shaped floating body, and a seal portion is in contact with the vicinity of the bottom through hole, especially around the outside. Provide a valve body.

Then, an anchor is laid on the seabed, and this anchor and the valve body are connected by a mooring cable of such length that tension is applied when the box-shaped floating body floats above a predetermined tide level or water level. The valve body is configured to seal the through hole by water pressure or spring force.

When the box-shaped floating body reaches an abnormal tide level or water level above a certain level, this valve body is released due to tension acting on the mooring cable, and water is automatically injected into the box-shaped floating body, causing it to lose its buoyancy and sink. ing.

〔Example〕

Hereinafter, an embodiment of a floating pier having a scuttling device according to the present invention will be described based on FIGS. 1 to 6.

FIG. 1 is a side view schematically showing a floating pier with a scuttling device. Floating pier A is composed of a box-shaped floating body 1 made of steel or reinforced concrete, and this box-shaped floating body 1 is cast in rotation 2. It is floating above the water surface WL by the mooring device of the steel pipe pile 3. A manhole 6 and a through hole 7 are provided on the top surface 4 and bottom surface 5 of this box-shaped floating body 1, respectively, and a valve body 8 is provided on the bottom surface through hole 7, and a valve body 8 is installed between the valve body 8 and the seabed 2. The anchor 9 is connected to a mooring line 10 such as an anchor chain.

More specifically, as shown in FIGS. 2 and 3, the seal portion 11 of the valve body 8 is configured to abut on the outer periphery of the bottom through-hole 7 of the box-shaped floating body 1, and the inner portion of the center A cylindrical support portion 13 having a mounting member 12 at the upper end is attached to the support portion 13 . The support portion 13 is arranged so as to be movable up and down along a guide 14 provided inside the bottom through-hole 7.

In addition, as a device for properly setting the valve body 8, the mounting member 12 and the handle 15 provided on the upper surface of the box-shaped floating body 1 are connected to a turnbuckle 16 and a wire rope 1.
7. Connected to the mounting member 12 by a connecting device 18 consisting of a lock pin 21 and the like. Usually handle 15
is adapted to fit into a recess 19 provided on the upper surface 4 of the box-shaped floating body 1.

Note that the turnbuckle 16 of this device is located at the second
It is also possible to use a device as shown in Figure a. To briefly explain this structure, an eye plate 16' is swingably supported on the upper surface 4 of the box-shaped floating body 1 by a lever 18', and a wire is connected to one side of the eye plate 16' via a shear pin 17'. rope 17
and the other to connect the wire rope 17 via a normal pin. The wire rope 17 connected to the shear pin 17' is kept under tension in order to keep the valve body 8 closed at all times, and the wire rope 17 connected to the normal pin side is kept slack.

This configuration prevents the valve element 8 from being opened inadvertently and flooding the floating body 1, and when the water level reaches a predetermined water level or the tide level or higher, tension acts on the anchor chain 10, causing the valve to close. The valve body 8 is opened by pulling down the body 8 and cutting the shear pin 17'. In this state, the wire rope 17 is held on the normal pin side to prevent the valve body 8 from falling.

By configuring as described above, the valve body 8 can be reliably closed under normal conditions, and can be opened in an emergency, thereby preventing accidents such as inadvertent flooding. can.

A protrusion 20 provided at the lower part of the valve body 8 is connected to a mooring line 10, and the length of this mooring line 10 is set at a predetermined tide level or water level of the highest tide level or water level at which the box-shaped floating body 1 is normally expected. The length is such that when the tension is reached, tension acts and releases the valve body 8.

In such a configuration, normally the coupling device 18
With the lock pin 21 removed and the wire rope 17 loosened, the valve body 8 seals the bottom through hole 7. When the tide level or water level WL rises due to washing water, tsunami, etc. as shown in Figure 4a, tension acts on the mooring cable 10, pulling the valve body 8 downward and opening the bottom through-hole 7. The box type floating body 1
Seawater flows into the interior. At this time, the air inside the box-shaped floating body 1 is discharged from the upper surface through-hole 6. Therefore, the buoyancy of the box-shaped floating body 1 is reduced, and as shown in FIG. 4b, the box-shaped floating body 1 sinks and reaches the seabed 2.

After that, when the tide level or water level becomes normal, pull up the handle 15 that sets the valve body 8 in the bottom through hole 7 as shown in FIG. The box-shaped floating body 1 is closed, and the seawater inside the box-shaped floating body 1 is discharged by a drainage device (not shown), and the box-shaped floating body 1 is floated as shown in FIG. 4d.

In this way, when the box-shaped floating body 1 rises to a predetermined tide level or water level, the lock pin 21 is removed and the wire rope 17 is loosened.
is kept in a state where it is pulled down by the mooring rope 10.

FIG. 5 shows another embodiment of the valve body 8, in which the valve body 8 is mounted so as to be movable up and down along the guide 14, and is always pulled upward by a spring 22, that is, the valve body 8 is The seal portion 11 of the body 8 is configured to constantly come into contact with an inclined surface provided at the bottom of the bottom through hole 7.

A mooring cable 10 is connected to a protrusion 20 provided below the valve body 8, as in the first embodiment. In this embodiment, when the box-shaped floating body 1 rises due to the tide level or a change in water level, the valve body 8 is automatically released, and seawater flows in from the bottom penetration 7, reducing its buoyancy and attempting to sink. 22 causes the valve body 8 to automatically close the bottom through-hole 7. That is, even if an abnormal rise in the tide level or water level occurs, the box-shaped floating body 1 will not rise above a predetermined position, so the mooring device will not be destroyed.

[Effect of idea]

As is clear from the above explanation, the floating pier with the scuttling device according to the present invention automatically reduces the buoyancy of the floating pier and prevents the mooring device from being destroyed even if an abnormal tide or water level occurs due to a tsunami or the like. It can be prevented.

As a result, it is possible to prevent the floating pier from drifting, which not only prevents the destruction of ships in the port, port facilities, and surrounding facilities, but also prevents the floating pier itself from being destroyed. effective.

[Brief explanation of the drawing]

The figures show an embodiment of a floating jetty having a scuttling device according to the present invention, in which Fig. 1 is a schematic side view, Fig. 2 is a side sectional view of the valve body, and Fig. 2a is a different structure for supporting the valve body. FIG. 3 is a view taken along the line A-A in FIG. 2, FIGS. 4 a to d are action explanatory views, and FIG. FIG. 6 is a side sectional view, and FIG. 6 is a view taken along the line B-B in FIG. 5. 1... Box-shaped floating body, 2... Seabed, 3... Steel pipe pile,
4...Top surface, 5...Bottom surface, 6...Manhole, 7
... Bottom through hole, 8 ... Valve body, 9 ... Anchor,
10...Anchor chain, 11...Seal part,
12... Mounting member, 13... Support part, 14... Guide, 15... Handle, 16... Turnbuckle,
16'...Eye plate, 17...Wire rope,
17'...Sear pin, 18...Connection device, 1
8'...Lever, 19...Recess 20...Protrusion, 2
1...Lock pin, 22...Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] 1) A box-shaped floating body has a through-hole at its bottom, a valve body is provided at the bottom through-hole, an anchor is laid on the seabed, and the box-shaped floating body connects the anchor and the valve body. 1. A floating pier having a scuttling device, characterized in that the pier is connected by mooring cables having a length such that tension is applied when the pier rises above a predetermined tide level or water level. 2) The valve body according to claim 1, wherein the seal portion is configured to be pressed against the outer periphery of the bottom through hole by water pressure. 3) The valve body according to claim 1, wherein the seal portion is configured to be pressed against the outer periphery of the bottom through hole by a spring force.