JPS6220496Y2 - - Google Patents

Description

[Detailed explanation of the idea]

Conventionally, when rivers, etc. are overflowing or are at risk of flooding, methods have been taken to prevent the overflow, such as filling rice bags or jute bags with earth and sand and stacking them. Recently, it has become difficult to obtain rice bags and jute bags, and there are also problems in collecting soil. Making sandbags requires a lot of manpower and time, and disadvantages include the inability to respond immediately to emergency situations. As a solution to this problem, the water mat construction method, in which water is poured into water mats, and the weir board construction method, in which the panels are supported with piles, were adopted, but water mats are heavy and manual construction is difficult. Moreover, it would be difficult to pump up water from the river and put it into the mats during floods, and although the weir plate construction method can be constructed manually, it would require considerably large diameter piles to support the panels by piling them under water pressure. The pile must be driven deeply, but if you calculate this using the ``Structural Calculation Handbook,'' (1) The formula for determining the penetration length at which the pile can withstand the overturning moment due to horizontal force is bqx ² −4Hx−6Hh=0... (1) b: Pile diameter q: Axial compressive strength of soil = 2 x 5t/m ² = 10t/
m ² H: Horizontal load on the pile h: Load point height overwater depth x 1/3 x: Pile driving depth In the above formula, the design water depth is 1 m, and the panel is 2 m long and 1 m high. When one sheet is supported by two piles with a diameter of 100 mm, the driving depth of the piles is 2.4 m, and when there are three piles, the driving depth is 2.4 m.
The length was 1.7m, and the length of 4 pieces was 1.4m, making it difficult to drive and requiring a lot of effort and time, and having drawbacks such as the inability to respond immediately to emergency situations. However, the present invention aims to eliminate the above-mentioned drawbacks, and forms a ∠-shaped support leg in which the angle between the upper support rod and the bottom support rod is 30° to 60°, The panel is fixed to the upper support rod, and the pile is driven into the pile hole of the fixed piece provided in the bottom support rod to support it, and the angle between the water surface and the panel is 30° to 60°, and the support is generated by the vertically downward component of water pressure. By utilizing the friction between the leg rod and the ground, and by lowering the height of the load point of the force applied to the pile, the driving depth of the pile can be reduced.
1/2 or less, and can be supported in an extremely stable state.In addition, when installing it, it does not require a lot of manpower or time, and it is possible to quickly and reliably respond to emergency situations. In addition, the support legs are made of metal, and the panels are made of glass fiber reinforced cement, metal, etc., making it strong and durable and able to withstand long-term use. At the same time, during installation, the component parts can be transported as a single unit to the installation location, making transportation and handling convenient.In addition, since the structure is simple, it can be manufactured efficiently and at low cost. , suitable for mass production, etc.
The following embodiments will be described with reference to the drawings, which have a number of features and effects. As shown in FIGS. 4, and the toggle pin 6
A ∠-shaped support leg A is formed by inserting and fixing at an angle of 30° to 60°, and glass fiber-reinforced cement or glass fiber-reinforced plastic is attached to the front part where one or two support legs A are arranged in parallel. , a strong panel 5 such as a metal plate is fixed, a watertight vinyl or rubber 7 is attached to both ends and the bottom of the panel 5, and panel fixtures 8 are provided at both the upper and lower ends of the upper support rod 1 to support the bottom. This is a flood stop for a river or the like, characterized in that a fixing piece 10 having a stake hole 9 is connected to the lower edge of a rod 2, and is formed so as to be fixed by a stake 11. Reference numeral 12 in the figure indicates a reinforcing rib provided on the back surface of the panel. However, in the main case, as mentioned above, the upper support rod 1
A ∠-shaped support leg A is formed with an angle of 30° to 60° between the support leg A and the bottom support rod 2.
A flood stop body is formed by fixing a panel 5 made of glass fiber reinforced cement or the like with a height of about 1.4 m and a length of 2 m to the front part of one or two panels arranged in parallel. If there is a risk of overflow, install a water stopper in parallel depending on the length, and install a pile 1 in the pile hole 9 of the fixed piece 10 of the bottom support rod 2.
1 to firmly fix it and prevent flooding, and if the ground is uneven when installing the overflow stop bodies in parallel, use the support 4.
By appropriately adjusting the turnbuckle 3 provided in the middle of the panel 5 to eliminate gaps and prevent water leakage, the angle between the water surface and the panel 5 is 30° to 60°. By using the friction between the support legs and the ground, the height of the load point of the force applied to the pile is lowered, and the conventional panel 5 is at a vertical angle of 90 degrees, eliminating any frictional force with the ground. In order to have a remarkable effect compared to the ones that cannot be used, the length of the panel is 2 m and the height is 1.4 m, and 2 sets of supporting legs and 4 piles with a diameter of 25 mm are driven into each set of legs. As for the case where the angle of the panel is 45°,
(A), 60° (B), 90° (C)
If calculated using formula (1) and the formula of "Road Bridge Substructure Design Guidelines", (2) Formula for calculating pile pullout force Rt=UC......(2) Rt: Ultimate pullout force of pile (t ) C: Pile circumferential adhesive force = 5t/m ² U: Pile circumference = π x 0.025m: Pile driving depth (m)

【table】

[Table] The friction force in Table (1) was calculated assuming that the coefficient of static friction between the support leg and the ground was 0.5, and ignoring the weight of the panel and support leg. (3) Formula for calculating the required bearing capacity per pile H = 1/8 x (P - F) ...... (3) H: Required bearing capacity per pile (corresponds to H in formula (1), In formula (2), it is applied to Rt) P: Horizontal water pressure (water pressure applied to the panel (A)
In the case of and (B), it is the horizontal partial pressure of water pressure. ) F: Frictional force As is clear from Table (1), by making the panels at angles of 45° and 60° with respect to the water surface, the supporting legs (A) and (B) are generated by the vertically downward component of water pressure.
Since the frictional force between the ground and the ground can be used, the depth at which the piles are driven is less than half of the conventional depth in both equations (1) and (2), so the time required for installation is also shorter than that of sandbags, etc. 1/3, allowing immediate response to emergency situations.

[Table] As mentioned above, panel materials have been mentioned for reference, but steel plates are heavy and difficult to handle and transport, requiring the use of various machinery and equipment, requiring a lot of manpower, and FRP has the disadvantage of not being able to respond quickly to situations, and although FRP has good weight, strength, toughness, and storage stability, there are no problems with it.
Since it is expensive, it requires a lot of money and has the disadvantage of not being suitable for actual situations.Furthermore, it is possible to use wooden boards or plywood, but with wooden boards,
It is difficult to construct a panel from a single piece of wood, and since several pieces are joined together, water may seep through the seams or there may be defects such as warping of the board.
Since plywood is bonded with adhesive, it absorbs water when flooded and is not durable as it easily peels off and swells.In this respect, glass fiber reinforced cement has some problems in terms of weight and toughness. However, by providing and reinforcing ribs 12 with appropriate strength, defects in toughness can be alleviated, and it is considered to be more suitable than other materials. In addition, during manufacturing, a column 4 is provided between the upper support rod 1 and the bottom support rod 2, and they are fixed at an angle of 30° to 60° to form a ∠-shaped support leg A. It has a simple structure in which the panel 5 is fixed to the front part where one or two panels are arranged in parallel, so it can be manufactured efficiently and at low cost, and is suitable for mass production. 5, etc., can be easily and quickly installed with simple operations without the need for special skilled techniques or the need for various complicated labor materials to transport component parts such as 5 to the site as a single unit, and the depth at which the piles 11 are driven can be Since it can be supported at 1/2 to 1/3 of the conventional size, it can be quickly installed in response to a flood emergency.Furthermore, by attaching watertight rubber 7 to the joints and bottom of the panel 5, Water leakage can be completely prevented, and when the watertight rubber 7 at the end joints is polymerized, water leakage can be completely prevented by making the watertight rubber 7 facing the flow direction the upper surface. In addition, although it is difficult to reuse sandbag wooden boards, etc., when they are no longer needed, the piles can be removed and dismantled with a simple operation, and stored in a narrow space without bulking up, in preparation for reuse. It has many characteristics and effects, such as being durable, durable and able to withstand long-term use.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of the embodiment, and FIG. 2 is an enlarged side view of the main parts of the embodiment, showing the mode of operation. 1... Upper support rod, 2... Bottom support rod, 3...
Turnbuckle, 4... Support, 5... Panel, 6
... Toggle pin, 7 ... Watertight rubber, 8 ... Panel fixture, 9 ... Pile hole, 10 ... Fixing piece, 11 ...
Pile, 12... Reinforcement rib, A... Support leg.

Claims (1)

[Scope of utility model registration request] A column is provided between the upper support rod and the bottom support rod to form a ∠-shaped support leg having an angle of 30° to 60°, and the front part of the upper support rod is made of glass fiber reinforced cement or the like. Attach watertight rubber to both ends and bottom of the panel, install panel fixtures at the top and bottom ends of the top support rod, and connect a fixing piece with stake holes to the bottom edge of the bottom support rod. An overflow stop for rivers, etc., characterized by the fact that: