JPS61193987A - Structure of floating gate in marine dock, etc. - Google Patents

Abstract

PURPOSE:To aim at improvements in a dead water effect, by interposing a seal material for dead water use between a bottom surface of floating gate and a bottomed surface of a gate. CONSTITUTION:A gate 1 is constituted of a rectangular parallelepipedic box body, and a leg part 13 is projectingly installed on a bottom surface of this gate 1 crosswise in inverted T-shaped form. On the other hand, a gate floor 23, where the gate 1 is mounted, is formed in a front bottom part of a dock 2, while a stopper part 21 is projectingly installed at the dock side of this gate floor 23. In addition, a buffer seal material S3 is set up on the gate floor 23, and furthermore a bottom surface seal material S2 is installed in a front part of the gate floor 23. A back seal material S1 is installed in a door hitting part 22 of a front part of the dock 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a floating gate in a marine dock or the like.

[A] Prior Art Recently, floating gates, which are buoyant structures, have been adopted in order to facilitate the opening and closing operations of large and heavy gates such as tri-docks.

FIG. 6 shows the opening/closing structure of a conventional tri-dock gate.

That is, the conventional gate A is a one-piece gate made of a steel box, and is configured to store ballast water inside and adjust its own weight.

In order to close off the opening of the dock, ballast water is poured into the gate A and the ship is allowed to land on the bottom.

Furthermore, in order to prevent the gate A from falling over, both side surfaces of the gate A are locked to shelf-shaped doorstops on the front surface of the dock.

10] Problems to be Solved by the Present Invention The above dry dock gate structure has the following problems.

(1) Conventional buoyant structure gates are easier to open and close than conventional non-buoyant gates, but there are problems with the stability of the gate itself.

(2) As the dock becomes larger, gate A inevitably becomes larger, and moving gate A requires a lot of time and effort.

3) The water pressure acting on the gate A is supported by the two door stops and the sill F on the dock side.

Therefore, the horizontal force acting on the gate A due to earthquakes and waves is concentrated on the door stop and sill F, and the door stop and sill F must be designed to have a large proof strength.

(4) As the gate A becomes larger and heavier, the number of foundation piles will increase in areas with poor ground conditions.

The present invention has been made to solve these problems, and has excellent operability in opening and closing doors of marine docks.
Furthermore, it is an object of the present invention to provide a structure for a floating gate in a marine dock, etc., which has good stability and high water-stop properties in the gate itself.

[C] Means for solving the problem The present invention comprises a floating gate with a hollow box installed on the bottom surface of the gate and the doorstop, and has legs extending from the front and rear surfaces of the bottom of the floating gate,
This invention relates to the structure of a floating gate in a marine dock, etc., in which a sealing material for water release is interposed between the bottom surface of the floating gate and the bottom surface of the gate.

[2] Embodiment The structure of a float gate, which is an embodiment of the present invention, will be described below with reference to the drawings.

(1) Gate and dock structure (Fig. 1) 1 is a floating gate (hereinafter referred to as "gate") with a structure that can store ballast material such as water to adjust its own weight, and 21 is a tri-dock 2 ( This is part of a stopper that locks the lower back surface of the gate 1 at the front sill of the dock (hereinafter referred to as the "dock").

Moreover, 22 is a door stop portion that locks both sides of the back side of the gate 1 at the front part of the dock 2.

(2) Gate (Fig. 1) The gate 1 is, for example, a rectangular parallelepiped box made of steel or concrete.

The bottom surface of the gate 1 has legs 13 protruding from the front and rear surfaces of the box in an inverted T shape.

As a result, an extended bottom surface 11 is formed on the bottom surface of the gate l.

Furthermore, a rib 1 is provided between the upper surface of the leg portion 13 and both sides of the gate 1.
Connect and reinforce with 2.

By providing the leg portion 13 in the gate 1 according to the present invention, the following advantages can be obtained.

a> Since the weight of water is added to the leg portion 13 on the water area side, the stability of the gate 1 is improved.

b) When the gate 1 is floated, the horizontal balance of the gate 1 can be maintained well, so that opening and closing operations can be performed stably.

<c> Generally, the cause of gate overturning is that the bottom surface of the gate is not located on the extension line of the resultant force of the weight of the gate (vertical force) and the water pressure from the water area side (horizontal force).

Therefore, by providing the leg portions 13 and expanding the bottom landing area, the extension line of the resultant force is always located on the bottom landing surface, so that it is possible to reliably prevent the gate 1 from overturning when the door is closed.

<(j> By increasing the bottom landing area of the gate 1, the load on the gate floor 23 is dispersed, and the design of the gate floor 23 becomes easier.

(3) Stopper (FIG. 2) A gate floor 23 on which the gate 1 is placed is formed at the bottom of the front surface of the dock 2, and a stopper part 21 is provided protruding in the form of an edge on the dock side of this gate floor 23.

Therefore, the gate 1 is locked on three sides: the shutter contact portion 22 and the stopper portion 21.
By forming the back sealing material S1 provided on the stopper portion 21 to be softer than the fender material 24 provided on the stopper portion 21, the reaction force generated in the conventional door stop portion 22 can be reduced.

Further, a fender 24 or the like is attached horizontally to the vertical surface of the stopper part 21 so that the impact (horizontal force) when the stopper part 21 collides with the gate 1 can be absorbed.

In addition, by attaching the fender 24 to the stopper part 21, unevenness caused by manufacturing errors on the back side of the gate J and the stopper part 21 is eliminated, and the horizontal force applied to the stopper part 21 is reduced. It can be made uniform.

(4) Water-stopping treatment In order to ensure water integrity when the door is closed, a back sealing material S1 is provided in the vertical direction, for example, on the door stop 22 at the front of the dock 2.

A continuous bottom sealing material S2 is attached to the sea area side (front part) of the gate floor 23 in parallel with the stopper part 21.

Both ends of this bottom sealing material S2 are connected to each back sealing material S1, so that when the gate 1 is placed, water can be stopped at the outer contour and back surface of the bottom surface of the gate 1.

Further, a buffer sealing material S3 is provided on the gate floor 23 surrounded by the bottom sealing material S2. (In the case of this embodiment, two rows are arranged in parallel with the fender 24.) That is, the structure is such that the weight of the gate 1 is dispersed by the buffer sealing material S3, and the horizontal force is dispersed by the fender 24.

Note that each of the above sealing materials S I, S 2, S3 and the fender 24 may be attached to the gate side.

Next, we will explain how to close the door of Tri-Dock 2.

(1) Guidance by floating the gate As in the conventional floating method, the gate 1 is floated and towed and guided onto the gate floor 23 of the dock 2.

(2) To install the gate, next, ballast water or the like is poured into the gate 1 so that the gate 1 is gradually submerged in water and landed on the gate floor 23.

(3) Water remaining in the dock 2 which is cut off from the external sea area by a drainage gate 1 inside the dock is drained to form a tri-dock.

As the drainage inside the dock 2 progresses, the gate 1 is pushed by the water pressure acting on the front surface of the gate 1, and the bottom and both ends of the gate 1 are moved to the doorstop part 22 and the stopper part 2, respectively.
Lock at 1.

Note that even if the gate 1 is placed a little in front of the stopper part 21 or the like, the gate 1 can be installed with high precision because the water pressure acts and the gate 1 is moved back.

(4) About the stability of the gate Most of the horizontal force due to water pressure, etc. that acts on the gate 1 is absorbed by the stopper part 21 that is in contact with the extended bottom surface 11 that extends at the front and rear of the gate 1, and the remaining horizontal force is absorbed by the doorstop 22 of the dock.

Therefore, the stability of the gate 1 is significantly improved compared to a conventional gate having the same area as the ballast chamber of the gate of the present invention.

[Other Embodiments] As shown in FIG. 3, it is also possible to adopt a type of divided gate 6 in which the gate 1 of the above embodiment is divided in the vertical direction.

The division gate 6 will be explained below.

(1) Divided Gate The divided gate 6 is a steel or concrete box that can store ballast material for self-weight adjustment inside.

A plurality of these divided gates 6 are arranged in parallel, water is stopped between each divided gate 6, and the gate is used as a single piece.

In addition, the parallel width of the 6 groups of dividing gates is somewhat narrower than the opening width of the front part of the dock 2 to be installed, even when the side sealing material S3 described later is attached. In this case, the dividing gate 63 located at the outermost end
The dimensions are such that a slight gap is created between the dock 2 and the side wall of the dock 2.

(2) Water-stopping treatment A bottom sealing material S2 is attached to the bottom of each divided gate 6.

In addition, a side sealing material S4 is provided on the side surface 61 of the split gate 6.
are installed in two rows in the vertical direction to perform water stop treatment between the opposing side surfaces 61.

Therefore, when the divided gates 6 to which the side sealing material S4 is attached are butted against each other, a side space 62 is formed between the opposing side surfaces 61.
is formed.

Furthermore, a side sealing material S4 is attached only to the inner side surface 61 of the divided gate 63 located at the outermost end.

Further, the bottom sealing material S2 can also be attached to the gate floor 23 side.

[Door Closing Method] The divided gates 6 are floated above the gate floor 23 at the front of the dock 2 and guided one after another to be arranged in - rows.

Next, ballast water is injected into each of the divided gates 6 so that they land on the gate floor 23 in parallel.

After each dividing gate 6 is brought to the bottom and the front part of the dock 2 is isolated from the outside area, the inside of the dock 2 is drained.

As drainage in the dock 2 progresses, water pressure is applied to the front surface of each of the parallel divided gates 6.

The two outermost divided gates 63 are locked to the door stop part 22, and the divided gate 6 located between the outermost divided gates 63 is locked to the stopper part 21 at the bottom back surface. , it will not retreat beyond the stopper part 21.

Therefore, the integrity of the divided gates 6 and 63 groups can be maintained.

Moreover, by interposing the side sealing material S4 between the side surfaces 61, expansion and contraction changes of the dividing gate 6.63 itself can be dispersed while maintaining good water-stopping properties.

In addition, as another method for maintaining water-tightness between the side surfaces 61, as shown in FIG.
When the side sealing material S4 is interposed between the side surfaces 61 parallel to the front surfaces of the divided gates 6, water-tightness between the divided gates 6 can be ensured well using the water pressure on the front surface of the divided gates 6.

If the gate is divided into parts as in this example, it is easy to move the gate when opening and closing the gate. The door can be opened and closed simply by moving the gate 6.

In addition, as shown in FIG. 5, the gate 1 and the door stop 22
As shown in Figure 5, as a water stop method between gate 1
It is also possible to provide a back sealing material S1 between the end side surface and the doorstop part 22.

[E1.Effects] Since the present invention is as explained above, the following effects can be expected.

(1) The stability of the gate was significantly improved because a tension surface was extended from the bottom of the gate to increase the bottom contact area with the gate floor.

Additionally, the weight of the water is added to the leg on the water side, providing greater stability.

(2) Since a sealing material is interposed between the front bottom of the gate and the gate floor, the bottom of the gate has extremely good water-stopping properties.

In addition, 1. A water-stopping sealing material is also inserted between the door stop and the back of the gate by connecting it to the sealing material interposed between the bottom of the gate and the gate floor, resulting in a higher water-stopping effect. It will be done.

(3) Since the legs of the gate function as horizontal balance members, opening and closing operations can be performed stably.

(4) The increased bottom area of the gate makes it possible to distribute the load on the gate floor, making it easier to design the gate floor.

[Brief explanation of the drawing]

Fig. 1: An explanatory diagram of the dock according to the present invention in a closed state Fig. 2: An explanatory diagram of the front part of the dock Fig. 3.4: An explanatory diagram of other embodiments 1: Gate 2: Dock 21; Part of the stopper 22:
Door stop part 23: Gate floor Figure 6

Claims (1)

[Claims] A floating gate is constituted by a hollow box installed on the bottom surface of the gate and the doorstop, and legs are provided to protrude from the bottom front and back surfaces of the floating gate, and the bottom surface of the floating gate and the bottom surface of the gate are connected to each other. Floating gate structure for marine docks, etc., with a water-stop sealing material interposed between the bottom.