JP5211026B2 - Standing structure of tide plate - Google Patents

Description

  The present invention relates to a standing structure of a tide plate for preventing inundation damage to a land structure. More specifically, the tide plate is normally laid down and the tide plate can stand up automatically during flooding. Concerning structure.

Various seawalls have been developed to prevent inundation damage to land facilities due to tsunami, storm surge, heavy rain, and other rising water levels.
If the seawall is a permanently installed structure, the prospects and ventilation will be worse, and there will be concerns that the surrounding landscape and environment will be affected. Providing a possible seawall is desired.

  As a tide bank that exhibits a tide function only when it is flooded, for example, there is a flip-up type flood prevention device.

However, the following problems arise in the conventional seawall.
(1) With the flip-up type seawall, it is only possible to construct a wall of about several tens of centimeters, and therefore it cannot handle inundation of several meters.
(2) In order to construct a flip-up type seawall with a wall with a height of about several meters, it is necessary to use a drive unit with a large output, so the equipment itself becomes large and the construction cost increases. End up.

  Accordingly, an object of the present invention is to provide an upright structure of a tide plate that can automatically exhibit the tide function only during flooding without increasing the construction cost.

Therefore, the present invention is a standing structure of the tide plate, and a float is provided on one end side of the tide plate and a weight is provided on the other end side. An arm portion is provided at a balanced position, and an open end of the arm portion pivotally supports the tide plate so that the tide plate can be rotated. And a second recess that blocks the rotation of the tide plate at a predetermined position, and the float floats when the first recess is submerged, thereby decentering the center of gravity of the tide plate toward the weight side. The gist of the structure is that the tide plate is constructed so that the plate can rotate and stand by itself.
Moreover, in the said invention, it can comprise so that a tread may be arrange | positioned on the upper surface of the said tide plate so as to straddle the boundary part of the other end side of a tide plate and the ground surface, and the gravity center position of the tide plate at the time of a fall.

According to the present invention, at least one of the following effects can be obtained.
(1) Since the tide plate rises automatically during flooding, no external power is required.
(2) No human judgment is required for the timing of the tide function.

The perspective view which shows the state which the tide board of this invention laid down. The side view which shows the water immersion initial state to the tide board of this invention. The side view which shows the state which the tide board of this invention stood up.

  The standing structure of the tide plate of the present invention will be described with reference to the drawings.

<1> Overall Configuration FIG. 1 is a perspective view showing a state in which the tide plate according to the present invention is laid down.
The standing structure of the tide plate according to the present invention accommodates the tide plate 1 configured to be rotatable, the float 2 and the weight 4 for controlling the rotational moment generated in the tide plate 1, and the float 2 or the weight 4. And including at least a first recess or a second recess.

<2> Tide plate The tide plate 1 is a substantially flat member for receiving a tsunami and a storm surge on the front side of the tide plate 1 when standing to prevent water from entering the back side.
It is desirable that the tide plate 1 is stored on the ground so as to be at the same height as the land in a normally lying state, thereby minimizing the use of the land area and the influence on the landscape.

<3> Float The float 2 is a member for decentering the center of gravity of the tide plate 1 using buoyancy generated during flooding.
The float 2 can use a general floating member, and is provided on the upper end side of the tide plate 1 at the time of standing and on the pressure receiving surface side of the submerged water.

<4> First concave portion The first concave portion 3 stores the float 2 when the tide plate 1 falls down, and inflow of water to generate buoyancy in the tide plate 1. Provide below.
The first recess 3 may be provided by drilling the ground surface, or may be provided by notching a base separately installed on the ground.

<5> Weight The weight 4 is a member for generating a rotational moment in a direction in which the tide plate 1 is raised.
The weight 4 can be a weight body made of metal or other well-known material, and may be provided as a separate member on the lower end side of the tide plate 1 when standing, or the lower end side of the tide plate 1 may be made of a different material. You may comprise by.

<6> Second concave portion The second concave portion 5 stores the weight 4 when the tide plate 1 falls down, and when the tide plate 1 rotates in the direction of standing up, the lower end side of the tide plate 1 and While storing the weight, the tide plate 1 and the weight 4 are provided below the tide plate 1 so as to be positioned at predetermined positions.
The second recess 5 is provided with a step that allows the arm portion 11 to rotate approximately 90 degrees, and the tide plate is erected substantially vertically with the weight in contact with the step surface 51 of the step. To do.
The second recess 5 may be provided by perforating the ground surface, or may be provided by notching a base separately provided on the ground.

<7> Arm part The arm part 11 is a member for rotating the tide plate 1.
The arm portion 11 is provided on the lower surface of the tide plate 1 when the tide plate 1 is lying down, and a rotary shaft 12 is provided at the open end of the arm portion 11 and is disposed in the second recess 5. It is pivotally supported.
The installation position of the arm portion 11 is a position where the rotational moment of the tide plate 1 provided with the float 2 and the weight 4 is substantially balanced when the tide plate 1 is lying down, and a small rotational moment in the clockwise direction in FIG. It is desirable that it is a working position (the center of gravity is slightly eccentric to the float side).

<8> Tread plate The tread plate 6 is a member for preventing the tide plate 1 from rotating in a standing direction when a load is generated on the upper surface of the tide plate 1 when the tide plate 1 is lying down.
By placing the tread 6 so as to straddle the boundary between the weight side end of the tide plate 1 and the ground surface and the center of gravity of the tide plate when lying down, a load is generated on the upper surface of the tread plate. Even in this case, since the center of gravity of the tide plate 1 is not decentered to the weight side, the counterclockwise rotation moment in FIG. 2 is not generated, and the rising of the tide plate 1 can be suppressed.

<9> Usage Method Hereinafter, the operation of the tide plate according to the present invention will be described with reference to FIGS.

(1) Normal time (Figure 1)
When there is no risk of inundation due to tsunami, storm surge, etc., the center of gravity of the tide plate 1 is slightly eccentric to the float 2 side, so that the tide plate 1 as a whole is lying down. In such a state, the tide plate 1 does not prevent the line of sight and ventilation.

(2) When flooded (Figure 2)
The action of the initial state in which the flood A has occurred will be described with reference to FIG.
When inundation due to a tsunami or storm surge occurs, the inundation A flows into the first recess 3 first.
The float 2 receives buoyancy by the water flowing into the first recess 3.
When the float 2 receives buoyancy, the position of the center of gravity of the tide plate 1 as a whole is decentered toward the weight 4 side, and a rotational moment in the counterclockwise direction around the rotation shaft 12 is generated in FIG.
The tide plate 1 rotates counterclockwise by the rotational moment, the other end side of the tide plate 1 and the weight 4 are housed in the second recess 5, and the weight 4 is a stepped surface in the second recess 5. By being in contact with 51, it is positioned at a predetermined position.
By the above operation, the tide plate can stand up and exhibit a water shielding function.

(3) During pressure reception (Fig. 3)
The operation when the water immersion A further proceeds will be described with reference to FIG.
When the tide plate rises, the second recess 5 is divided by the tide plate 1 and the weight 4 into a space 52 on the front side and a space 53 on the back side of the tide plate 1.
When the inundation A further proceeds, the inundation A flows into the space 52 on the front side of the tide plate 1.
When the tide plate 1 is subjected to water pressure by the inundation A flowing into the space 52, the tide plate 1 generates a force that rotates counterclockwise, and the weight 4 comes into stronger contact with the stepped surface 51, which is stronger. It will exhibit a water stop structure.

DESCRIPTION OF SYMBOLS 1 Tide plate 11 Arm part 12 Rotating shaft 2 Float 3 1st recessed part 4 Weight 5 2nd recessed part 51 Step surface 6 Footboard A Inundation

Claims (2)

A tide plate standing structure,
Provide a float on one end of the tide plate and a weight on the other end,
On the underside of the tide plate, an arm is provided at a position where the moment of force is approximately balanced in a stationary state,
The open end of the arm part pivotally supports the tide plate,
Below the tide plate, there is provided a first recess that allows water to flow into the interior while storing the float, and a second recess that blocks rotation of the tide plate at a predetermined position,
The float floats when it is inundated into the first recess, so that the center of gravity of the tide plate is eccentric to the weight side, and the tide plate is configured to stand up by itself.
Standing structure of tide plate. The tide plate according to claim 1, wherein a tread is arranged on the upper surface of the tide plate so as to straddle a boundary portion between the other end side of the tide plate and the ground surface and a gravity center position of the tide plate at the time of lying down. Standing structure.

Images