JP3048343U - Concrete U-shaped groove block - Google Patents

Abstract

(57) [Summary] [Problem] The present invention relates to a concrete U-shaped groove block, which has a high production efficiency, allows easy assembling and construction at a construction site, is quick, shortens the construction period, and has different conditions for each construction site. The thickness of the channel bottom is easily set in accordance with the flow velocity of the flowing water along with the steepness of the flowing water gradient, thereby preventing leakage and abrasion of the flowing water so as not to require a large-scale mold. SOLUTION: The base part 3 of the gutter main body 1 is several tens mm.
The reinforcing bar 4 is placed upward at a desired pitch P substantially perpendicular to the flowing water direction W.
When necessary, such as when the design flow velocity changes in a short section at a large running water gradient θ, concrete C for extension is cast on the upper surface of the base to a desired thickness t ′ to reduce the thickness of the base. Add more.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a concrete U-shaped groove block, especially when it is necessary to change the design flow velocity in a short section due to a large gradient of flowing water, such as in channel construction in mountainous areas, to increase the thickness to the desired thickness on the upper surface of the base at the construction site when necessary. To prevent water leakage and abrasion due to the flow velocity by casting concrete for construction to increase the thickness of the channel bottom.

[0002]

[Prior art]

 At present, the aging and employment of workers at the worksite are advantageous, and the construction period can be shortened without being affected by the weather during the manufacturing process, and the construction can be performed easily. In addition, in the irrigation and drainage works in the land improvement project, various large and small U-shaped gutter blocks produced in factories are used as secondary concrete products. However, the U-shaped groove block as a secondary concrete product must be manufactured at a factory and transported to a construction site, so that the size and weight of one U-shaped groove block are unlimitedly large. He did not go to translation and was restricted. For this reason, the thickness and thickness of the U-shaped groove block itself have been reduced so that transportation and movement have been facilitated. In addition, since the number of fittings increases to ensure the connection between the U-shaped groove blocks, the connection between the U-shaped groove blocks takes a lot of time and labor, and the efficiency required for construction deteriorates. Troubles such as uneven settlement, bending settlement, and joint breakage are likely to occur. In addition, under various conditions for each construction site, for example, in the construction of a canal in a mountainous area, the slope of the canal often becomes large, and it is necessary to prevent leakage or abrasion of the bottom of the canal by running water due to design. The existing U-shaped groove block as a concrete secondary product cannot be used to satisfy these conditions, while it is installed in such places, and water leakage occurs at the channel floor or the channel floor is worn. Was occurring. Therefore, in such cases, U-shaped grooves for waterways are formed by continually adopting the cast-in-place method. By the way, the flow velocity of the water flowing in the water channel including the U-shaped groove block has the minimum flow velocity at which sediment does not accumulate and the underwater plants do not grow. It must be within the range of the maximum flow velocity at which the unstable flow condition will not occur. From this, the minimum flow velocity was 0.45 m / sec, and the maximum flow velocity was 3.0 m / sec. In addition, as a rule in the land improvement project, U-shaped grooves for waterways are formed by adopting the cast-in-place method, regardless of the U-shaped groove blocks produced in factories, for waterways with a flow velocity of 3.0 m / sec or more. ing.

[0003]

[Problems to be solved by the invention]

 However, the conventional U-shaped groove for water channel formed by the cast-in-place method is affected by the weather such as rainy weather and clear weather, and the mold assembly and distribution work of the forming die is performed in the manufacturing process on site. Since a lot of work is required for each process such as muscle work, concrete curing, concrete curing, and demolding work after solidification, production takes a lot of time and labor, and production efficiency deteriorates. I was In addition, due to the aging of the workers, construction could not be performed easily and quickly, and the construction period was long, requiring many facilities and costs, such as the need for a mold and its storage place. In addition, in the conventional U-shaped groove for water channel formed by the cast-in-place method, various conditions that differ from one construction site to another, such as a slow flow speed of flowing water flowing through the channel bottom due to a steep or steep gradient of the channel, are adopted. By setting the thickness of the channel bottom to a desired thickness, it is necessary to have a high degree of design and skilled technology to prevent water leakage due to the flow velocity of the water at the channel bottom and to measure the wear.

[0004] The present invention solves the above-mentioned conventional inconveniences and makes use of the advantages of secondary products produced in factories without being affected by the weather, is suitable for mass production, and has high production efficiency. Easy and quick on-site assembly and construction shortens the construction period, makes the structure more robust, and has different conditions at each construction site, e.g., flowing water flowing through the bottom of the waterway due to the steepness of the waterway gradient. The thickness of the channel bottom is easily set to the desired thickness corresponding to the flow velocity of the water to reliably prevent water leakage and abrasion due to running water, and is made of concrete that does not require large-scale molds and equipment. A gutter block is provided.

[0005]

[Means for Solving the Problems]

 Claim 1 of the present invention is to arrange reinforcing bars at a desired pitch substantially perpendicular to the direction of flowing water several tens of mm above the base of the gutter main body, and the design flow velocity is short due to a large gradient of flowing water. When there is a need for a large change between the parts, the concrete for extension is cast on the upper surface of the base part to a desired thickness, thereby increasing the thickness of the base part by using the gutter main body as a mold. Means were adopted.

According to a second aspect of the present invention, in the first aspect, the reinforcing bars are provided in mounting holes opposed to the left and right side walls of the gutter main body at a desired pitch several tens mm above the base. And a cap is fitted into the mounting hole from outside.

According to a third aspect of the present invention, in the first or second aspect, the rebar is about 50 mm above the base of the gutter main body and has a maximum diameter of about 10 mm at a pitch of every 30 cm at a pitch of 30 cm. The main bar is attached.

[0010] Further, claim 4 of the present invention adopts a means in claim 3 in which a desired number of force distribution bars are arranged in the flowing direction with respect to the main reinforcement and assembled.

Further, claim 5 of the present invention adopts a means in claim 1 in which, when the design flow velocity exceeds 3.0 m / sec, concrete is poured into the upper surface of the base and added.

According to a sixth aspect of the present invention, there is provided the means according to any one of the first and fifth aspects, wherein the concrete for extension is cast on the upper surface of the base to a thickness of about 10 cm.

[0011]

[Embodiment of the invention]

An embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a gutter main body as a secondary product produced in a factory using a molding die (not shown). The gutter main body 1 has left and right side walls 2 and 2 opposed to each other. And a base portion 3 for closing the lower portion. In this embodiment, the size of the side groove main body 1 is such that the inner circumferential width l ₁ is about 700 mm, the height h from the upper edge of the side wall 2 to the base 3 is 700 mm, and the length L of the flowing water direction W is about 700 mm. When the base 3 is formed to have a thickness t of about 50 mm with a thickness of about 2000 mm, the base 3 can be easily lifted using a crane, a chain block or the like and can be transported.

Reference numeral 4 denotes a reinforcing bar which is arranged at a desired pitch P at a factory approximately several tens mm above the base portion 3 of the gutter main body 1 at a right angle to the flowing water direction W. The left and right side ends 4a, 4a are respectively inserted into mounting holes 2a, 2a opposed to the left and right side walls 2, 2 by several tens of mm, for example, 50 mm above the base 3, so that the water flows. A plurality of lines are arranged at a desired pitch P substantially at right angles to the direction W, and in the drawing, seven lines are arranged between the side walls 2 and 1 for one side groove main body 1.

Reference numeral 5 denotes a cap which is fitted in a liquid-tight manner from the outside of the mounting holes 2a, 2a. The cap 5 is made of, for example, synthetic resin, rubber, or metal. Then, if necessary, a synthetic resin adhesive, cement mortar, tar, or the like is applied between the outer periphery of the cap 5 and the inner periphery of the mounting hole 2a to be solidified, so that the cap 5 is liquid-tight. It is sealed and mounted in the mounting hole 2a.

The reinforcing bar 4 is approximately 50 mm above the base portion 3 of the gutter main body 1 and has a maximum diameter of about 10 mm at a pitch of 30 cm at intervals of 30 cm.

Numeral 6 designates a desired number of reinforcing bars in the flowing direction W with respect to the main reinforcing bar 4A in the construction site, and two reinforcing bars are arranged in FIG. In the construction site, concrete C for extension is cast on the upper surface of the base portion 3 in the gutter main body 1 by arranging and fixing the main gutter 4A to the main bar 4A, and then cured and solidified so that the gutter main body 1 is flushed. When connected in the direction W, they are integrated to form a watertight bottom S ', and water leakage and wear are reliably prevented.

When the gutter main body 1 is continuously connected in order to construct a water channel S such as an irrigation channel and a drainage channel in a land improvement project, the concrete C is subjected to various conditions different for each construction site, for example, as shown in FIG. In the channel construction in the mountainous area as shown in Fig. 1, the design is performed at a large gradient of flowing water θ. When the flow velocity changes greatly in a short section, etc., the gutter main body 1 is disposed on the upper surface of the base 3 at the construction site. By being driven into the desired thickness t 'together with the main rebar 4A and the distribution muscle 6, it is added as a channel bottom S'. At this time, the design flow velocity largely changes means that when the flow velocity of the flowing water exceeds 3.0 m / sec by installing the gutter main body 1 at a large flowing water gradient θ, the concrete C is placed on the base 3. It is expanded by being cast on the surface. The desired thickness t 'of the concrete C to be cast on the upper surface of the base 3 is sufficient to prevent water leakage and abrasion due to running water, and to cause cracks and cracks in compression and tension. It has a strong structure without any strength and is typically cast about 10 cm thick.

One embodiment of the present invention is configured as described above, and the gutter main body 1 is molded as a secondary product using a molding die at a factory. The size of the side groove body 1 is, for example, as shown in FIGS. 3, 4 and 5, the width l _{1 of the} inner circumference is about 700 mm, and the height h from the upper edge of the side wall 2 to the base 3 is 700 mm. Furthermore, since the length L of the flowing water direction W is about 2000 mm and the thickness t of the base 3 is about 50 mm, the weight is light. In transporting and moving to a construction site for constructing a water channel S such as an irrigation channel and a drainage channel, the gutter main body 1 can be easily lifted and transported using a hanging tool such as a crane or a chain block.

If the construction site is flat and the flow gradient θ of the gutter main body 1 is small and the design flow velocity is small, it is necessary to judge from the construction drawing produced by measuring the laying place at the construction site. Reinforcing bars 4 are attached to the mounting holes 2a, 2a opposed to the water flow direction W at a desired pitch P several tens mm, for example, 50 mm above the base 3, on the left and right side walls 2, 2 of the number of side groove main bodies 1. The work is carried out by transporting the gutter main body 1 to the construction site in a state where there is no gutter and connecting the gutter main bodies 1 to each other continuously. At this time, the connection of the gutter main bodies 1 is not shown in the drawing, but the joining ends of the gutter main bodies 1 are joined by using a tie band and a connecting bolt, or the joining ends of the gutter main bodies 1 are male and female. And joints are joined through joint means such as cement mortar, coal tar, adhesives and the like.

Then, as shown in FIG. 1, when the construction site constructs a channel in a mountainous area, for example, the flow gradient θ of the gutter main body 1 is large, and the design flow velocity of the water flow greatly changes to 3.0 m / sec. When necessary, the right and left sides of the rebar 4 are inserted into the mounting holes 2a, 2a opposed to the left and right side walls 2, 2 of the side groove main body 1 by several tens mm, for example, 50 mm above the base portion 3 at a desired pitch P. The ends 4a, 4a are inserted, and caps 5, 5 made of synthetic resin, rubber, metal, or the like are fitted and fitted into the mounting holes 2a, 2a from the outside, so that the external appearance is completely visible. The necessary number of gutter bodies 1 with the desired number of reinforcing rods 4 attached thereto at a desired pitch P at substantially a right angle to the water channel direction W is conveyed to the construction site.

In the construction site, a desired number of reinforcing bars 50 mm above the base 3 of the gutter main body 1 to be joined to each other at a desired pitch P with a maximum interval of about 30 cm, that is, a desired number of reinforcing bars 4 A, FIG. The two force bars 6 cross at the site and are arranged in the flowing water direction W and fixed. At this time, the distribution bars 6 are fixed to the main reinforcement 4A by binding using a metal wire or by welding.

Then, concrete C is poured into the gutter main body 1 at the construction site at the construction site, so that the concrete C for addition has a desired thickness, for example, a thickness t ′ of about 10 cm, on the upper surface of the base 3 of the gutter main body 1. It is cast to form a channel bottom S '. At this time, the main channel 4A having a diameter Φ of about 10 mm is arranged in the additional concrete C at a pitch P having a maximum interval of 30 cm in the flowing direction W as shown in FIG. As shown in FIG. 2, a desired number, in FIG. 2, of two main force bars 6 are crossed and fixed to the main bar 4A as shown in FIG. As a result of the structural strength of the rebars 6 in the horizontal and vertical directions, the waterway bottom S 'is newly integrated with the base 3 having a thickness t of about 50 mm without causing peeling or shifting movement at the construction site. In addition, it is installed with a robust structure. The concrete C cast in the gutter main body 1 can be used with a trowel because the base 3 and the side walls 2, 2 provided on the left and right sides of the base 3 can be used as discarded frames. The top is flattened by hand. The water channel bottom S 'thus formed exerts a strong water pressure even at a sudden design flow velocity where the design flow velocity of the water flow flowing in the gutter main body 1 exceeds 3.0 m / sec. A channel bottom S 'having a thickness t' that can sufficiently withstand abrasion against earth and sand flowing down is secured.

Moreover, a plurality of, for example, two, reinforcing bars 6 are arranged in the channel direction W across the main reinforcing bars 4A. By casting C 1, an integrated channel bottom S ′ is formed. Therefore, when the gutter main body 1 is joined and buried and constructed on the construction site of the soft ground, the gutter main body 1 is prevented from sinking unequally or bending and sinking, and joint breakage is reliably prevented. In addition to this, water leakage from the junction between the side groove main bodies 1 is prevented.

Further, a concrete floor C is cast at a construction site above the base 3 of the gutter main body 1 having a thickness t of about 50 mm to increase a desired thickness t ′ with respect to the base 3. S 'can be adjusted by increasing or decreasing its thickness t' according to the design flow speed being fast or slow.

In the above embodiment, when the channel bottom S ′ is added to the base portion 3 by casting concrete C at the construction site using the gutter main body 1 as a discarded form, the opposing side walls of the gutter main body 1 are used. The main reinforcements 4A arranged at an equal pitch P substantially perpendicular to the flowing water direction W between the bases 2 and 2 are arranged at substantially the same height from the base 3, but are not limited thereto. May be arranged at desired steps at different heights with a desired pitch, so that the structure can be made more robust. Further, in the above embodiment, the main reinforcement 4A and the distribution bar 6 are used for placing the concrete C to form the additional water channel bottom S '. In addition, a metal mesh or a mesh made of reinforcing fibers such as carbon fiber or glass fiber is buried in the concrete C as a reinforcing material, so that the expansion channel bottom S having higher tensile strength and bending strength than the above embodiment can be obtained. 'May be molded.

[0025]

[Effect of the invention]

 As described above, the gutter main body as a secondary product of the present invention is manufactured at the factory, so it can be produced at high production efficiency without being affected by the weather and suitable for mass production. By transporting and moving the gutter body to the construction site, assembly and construction can be performed easily and quickly. In addition, by casting concrete for additional construction at the construction site, the bottom of the channel can be formed in the gutter main body, which can respond to the gradient of the channel, so the construction period can be shortened, unlike the conventional method of site construction. And it is structurally robust. In addition, concrete for additional construction is installed in accordance with the conditions that differ at each construction site, for example, the flow velocity of the flowing water flowing through the bottom of the canal according to the steepness of the canal, such as in the canal construction provided in the mountainous area, to reduce the thickness of the canal bottom. Since the thickness can be easily set to a desired thickness, it is possible to reliably prevent leakage of flowing water flowing through the bottom of the waterway and also to surely prevent wear. Furthermore, concrete can be poured using the main body of the gutter as a discarded frame without the need for a large-scale molding die or equipment as in the conventional on-site construction. I'm done.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment in which a concrete U-shaped groove block is laid in a mountain area.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view showing a concrete U-shaped groove block used in the present embodiment.

FIG. 4 is a plan view of a concrete U-shaped groove block.

FIG. 5 is a cross-sectional view of the concrete U-shaped groove block.

FIG. 6 is an enlarged cross-sectional view showing a part of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gutter main body 2 Side wall 3 Base 4 Reinforcing bar 4A Main bar 5 Cap 6 Distributing bar C Concrete

Claims (6)

[Utility model registration claims] 1. A reinforcing bar is arranged at a desired pitch several tens mm above the base of the gutter main body at a desired pitch substantially perpendicular to the flowing water direction, and the design flow velocity changes greatly in a short section due to a large flowing water gradient. A concrete U-shaped groove block characterized in that concrete for extension is cast to a desired thickness on the upper surface of the base portion when necessary, so that the thickness of the base portion is increased by disposing the gutter main body as a mold. 2. The left and right side ends of the reinforcing bars are respectively inserted into mounting holes opposed to the left and right side walls of the side groove main body at a desired pitch several tens of mm above the base portion, and the mounting holes are provided. The concrete U-shaped groove block according to claim 1, wherein a cap is fitted into the inside from outside. 3. The main reinforcing bar according to claim 1, wherein a main reinforcing bar having a diameter of approximately 10 mm is attached to the reinforcing bar approximately 50 mm above the base of the gutter main body at a pitch of 30 cm at a maximum interval. Item 3. A concrete U-shaped groove block according to any one of Items 2. 4. The concrete U-shaped groove block according to claim 3, wherein a desired number of distribution bars are arranged in the flowing water direction with respect to the main reinforcement and assembled. 5. The concrete U-shaped groove block according to claim 1, wherein when the design flow velocity exceeds 3.0 m / sec, concrete is poured on the upper surface of the base portion and added. 6. The concrete U-shaped groove block according to claim 1, wherein the additional concrete is cast on the upper surface of the base portion to a thickness of about 10 cm. .