JP4243226B2 - Method of placing invert concrete in gutter block - Google Patents

Description

The present invention relates to droplet設方method of invert concrete definitive in gutter block having a bottom wall.

  Conventionally, in a side groove block having a bottom wall, for example, a U-shaped side groove block, invert concrete is sometimes placed on the bottom wall.

  However, in the conventional U-shaped side groove block, adhesion between the U-shaped side groove block and inverted concrete was low. Therefore, for example, it is necessary to consider the adhesion property such as applying a primer to the surface of the U-shaped side groove block or using an adhesive.

The present invention has been made to solve the conventional disadvantages mentioned above, it is an object can be increased easily adhesion between gutter block and invert concrete, invert the definitive in gutter block It is to provide a method for placing concrete.

Striking設方method of invert concrete definitive in gutter block according to the present invention, in order to achieve the object, comprising the following configuration. That is,
Striking設方method of invert Concrete gutter block according to the invention of claim 1, have a bottom wall, the bottom wall thereof, a recess which is open on the lower side, leaving a knockout portion removable by knocking out the upper The invert concrete is placed by placing the invert concrete on the bottom wall of the side groove block formed as described above. In this placing method, the knockout portion formed in the side groove block is removed, and a vertically penetrating hole made up of the removed portion and the recessed portion is formed. Then, the invert concrete is placed on the bottom wall so that the concrete flows into the through hole. By doing so, when invert concrete is placed, the concrete flows into the removal portion and the recess from which the knockout portion has been removed.

Also, as the punching設方methods invert Concrete gutter block according to the invention of claim 2, in striking設方method of claim 1, prior to pouring of the invert concrete, rebar, said bottom wall It may be arranged so as to serve as a reference for the upper surface of the subsequent invert concrete and to be partially inserted into the through hole. Thus, the reinforcing bar serves as a reference for the upper surface of the invert concrete, so that the upper surface of the invert concrete can be easily finished. Moreover, the strength of the inverted concrete portion can be increased by the reinforcing bars.

Further, as in the method for placing inverted concrete in the side groove block according to the invention described in claim 3 , in the placing method according to claim 2 , the concave portion is provided in an intermediate portion in the longitudinal direction of the side groove block. The reinforcing bars may be disposed across the adjacent side groove blocks, and a part of the reinforcing bars may be inserted into the through holes. Thus, the connection between the side groove blocks can be strengthened by the reinforcing bars deployed across the adjacent side groove blocks.
Further, in the placing method according to claim 1 or 2, as in the method for placing inverted concrete in the side groove block according to the invention according to claim 4, the concave portion is formed on an end face in the longitudinal direction of the side groove block. You may provide so that it may open.
Further, in the placing method according to claim 4, as in the placing method of inverted concrete in the side groove block according to the invention according to claim 5, the concave portion opens in the end face in the longitudinal direction of the side groove block. Instead of or in addition to the concave portion, it may be provided at an intermediate portion in the longitudinal direction of the side groove block.

According to hitting設方method invert concrete definitive in gutter block according to the present invention, the invert concrete, by flowing into the removal portion and the concave portion has been removed knockout portion, the adhesion between the groove block and the invert concrete easy Can be increased.

Will be described below with reference the best mode for carrying out the punching設方method invert concrete definitive in gutter block according to the invention with reference to the drawings.

  1 to 6 show an embodiment of the present invention. Reference numeral 1 in the figure denotes a side groove block having a bottom wall 1a. The side groove block 1 is made of concrete and is formed of, for example, a U-shaped side groove block. As shown in FIGS. 1 and 2, the side groove block 1 has side walls 1b and 1b rising from both sides of the bottom wall 1a in addition to the bottom wall 1a. In addition, a lid-hanging step portion 1c for placing a side groove lid (not shown) is provided on the upper portion of the side wall 1b.

  Here, the side groove block 1 is provided with a recess 1d that opens downward on the bottom wall 1a. Specifically, the recess 1d is formed so as to leave a knockout portion 1e that can be removed by knockout on the upper side. In the illustrated embodiment, the recess 1 d is provided on each end face 1 f side so as to open to the end face 1 f in the longitudinal direction of the side groove block 1. The recess 1d is formed so as to be wider toward the lower side (see FIG. 1).

  Next, an invert concrete placing method in which invert concrete 2 is placed on the bottom wall 1a of the side groove block 1 will be described. First, as shown in FIG. 3, this placing method removes the knockout portion 1e formed in the side groove block 1 and vertically penetrates the through hole 101 formed by the removed portion and the concave portion 1d. Form.

  Then, as shown in FIGS. 4 and 5, the reinforcing bar 3 is used as a reference for the upper surface of the invert concrete 2 to be placed on the bottom wall 1a and a part thereof is formed in the through hole 101. Deploy to insert. In the illustrated embodiment, the reinforcing bar 3 includes first and second reinforcing bars 3a and 3b. The first reinforcing bar 3a and the second reinforcing bar 3b are juxtaposed in the width direction of the bottom wall 1a, and are connected by connecting reinforcing bars 3c and 3c. Further, both end portions 301, 301 of the reinforcing bars 3 a, 3 b are bent downward, and these end portions 301, 301 are inserted into the through-hole 101. The reinforcing bars 3 (3a, 3b) are provided with adjusting means 4 for making the height position of the reinforcing bars 3 correspond to the upper surface of the inverted concrete 2. The adjusting means 4 is composed of an adjusting piece 4 a that is adjusted in height and placed on the bottom wall 1 a of the side groove block 1. Specifically, the adjustment piece 4a is provided at a required position of the end portions 301 and 301 of the reinforcing bars 3a and 3b, and thus the height position of the reinforcing bars 3 (3a and 3b) is adjusted.

  Thereafter, as shown in FIG. 6, the invert concrete 2 is placed on the bottom wall 1 a so that the concrete flows into the through hole 101 of the side groove block 1. At this time, the reinforcing bars 3 (3a, 3b) serve as a reference for the upper surface of the invert concrete 2, and the upper surface of the invert concrete 2 is finished so as to match the reinforcing bars 3 (3a, 3b).

Next, the function and effect will be described in droplet設方method Louis emission Bad concrete 2, such the above configuration. The side groove block 1 is used without removing the knockout portion 1e when the invert concrete 2 is not placed on the bottom wall 1a. And when placing the invert concrete 2 on the bottom wall 1a, the knockout part 1e is removed before the placement. By doing so, when the invert concrete 2 is placed, the concrete is removed from the removed portion and the concave portion 1d from which the knockout portion 1e has been removed (that is, the through-hole 101 penetrating vertically formed by the removed portion and the concave portion 1d). Inflow. Thus, by allowing the invert concrete 2 to flow into the removed portion from which the knockout portion 1e has been removed and the recess 1d (that is, the through hole 101), the adhesion between the side groove block 1 and the invert concrete 2 can be easily increased. In particular, the concave portion 1d is wider toward the bottom, and adhesion between the side groove block 1 and the inverted concrete 2 is further enhanced. Thus, the side groove block 1 is used as it is without removing the knockout portion 1e when the inverted concrete 2 is not placed, and the knockout portion 1e is removed when the inverted concrete 2 is placed. Thereby, the adhesiveness with the invert concrete 2 can be improved.

  Moreover, when the invert concrete 2 is placed, the reinforcing bars 3 (3a, 3b) serve as a reference for the top surface of the invert concrete 2, and the top surface of the invert concrete 2 can be easily finished. In addition, the strength of the invert concrete 2 portion can be increased by the reinforcing bars 3.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the side groove block 1 may be a side groove block having a bottom wall 1a, and is not limited to a U-shaped side groove block, and may be a culvert type side groove block.

  Moreover, although the recessed part 1d is provided in each end surface 1f side so that it may open to the end surface 1f of the longitudinal direction of the ditch | groove block 1, it may be provided only in the one end surface 1f side.

  Further, the concave portion may be provided in an intermediate portion (for example, a central portion) in the longitudinal direction of the side groove block 1 instead of or in addition to the concave portion 1d opened in the end surface 1f in the longitudinal direction of the side groove block 1. FIG. 7 shows an example in which the concave portion 1d is formed in the middle portion (specifically, the central portion) in the longitudinal direction of the side groove block 1 in addition to the concave portion 1d opening in the end surface 1f in the longitudinal direction of the side groove block 1. ing. And when the recessed part 1d is provided in the intermediate part of the longitudinal direction of the side groove block 1 in this way, as shown in FIG. 8, the reinforcing bar 3 is deployed ranging over the adjacent side groove blocks 1 and 1. As shown in FIG. Also good. Also in this case, a part of the reinforcing bar 3 is inserted into the removal portion from which the knockout portion 1e is removed and the recess 1d (that is, the through hole 101).

  In placing the invert concrete 2, the reinforcing bars 3 are arranged on the bottom wall 1 a of the side groove block 1 prior to the placing. However, if not necessary, the reinforcing bars 3 may not be arranged. Moreover, when deploying the reinforcing bar 3, the inverted concrete 2 may be placed so that the reinforcing bar 3 is completely buried.

It is a perspective view of a gutter block of one embodiment of this invention. Similarly, it is sectional drawing by the AA in FIG. Similarly, it is a longitudinal cross-sectional view which shows the state which removed the knockout part of the side groove block. Similarly, it is a longitudinal cross-sectional view which shows the state which deployed the reinforcing bar in the gutter block. Similarly, it is a B arrow view in FIG. Similarly, it is a longitudinal cross-sectional view which shows the state which laid invert concrete. FIG. 3 is a view corresponding to FIG. 2 of another embodiment of the present invention. Similarly, it is a figure equivalent to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side groove block 1a Bottom wall 1d Recessed part 1e Knockout part 1f End surface 2 Invert concrete 3 Reinforcing bar 3a 1st reinforcing bar (reinforcing bar)
3b Second rebar (rebar)
101 Through-hole

Claims (5)

Have a bottom wall, the bottom wall thereof, a recess which is open on the lower side, of the side grooves block that is formed so as to leave the knockout portion removable by knocking out the upper, invert concrete on said bottom wall Invert concrete placement method,
Removing the knockout part formed in the side groove block, forming a through-hole penetrating up and down consisting of the removed part and the recessed part;
A method for placing invert concrete in a gutter block, wherein the invert concrete is placed on the bottom wall so that the concrete flows into the through hole. Prior to placing the invert concrete, a reinforcing bar is arranged on the bottom wall so that it becomes a reference for the upper surface of the subsequent invert concrete and a part thereof is inserted into the through hole. A method for placing inverted concrete in a gutter block according to claim 1. The concave portion is provided in an intermediate portion in the longitudinal direction of the gutter block,
The method for placing inverted concrete in a side groove block according to claim 2, wherein the reinforcing bars are disposed across the adjacent side groove blocks, and a part thereof is inserted into the through holes. The recess, hitting設方method invert Concrete description, gutter block in claim 1 or 2 that you have provided so as to open in the longitudinal direction end surfaces of the features of the gutter block. The recess, instead of the concave portion which opens in the longitudinal direction end surface of the groove block, or in addition, according to claim 4, characterized that you have provided in the longitudinal direction of the intermediate portion of the groove block, hitting設方method of invert concrete in ditch block.

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