JP2767379B2 - Basic construction method of free slope gutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a foundation for arranging a free-slope type road gutter having an opening for mounting a lid on the upper surface and having an open bottom surface.

[0002]

2. Description of the Related Art Conventionally, in the construction of this type of free slope type gutter, since the entire bottom surface of the gutter block is an open type, a base concrete for mounting the gutter block is laid on a foundation ground made of crushed stone or sand. A gutter block is disposed on the gutter, and then invert concrete is cast on the open bottom of the gutter block to secure a drainage gradient.

[0003]

This invert concrete is cast in a narrow width, and in order to adjust the height of the finished surface in a deep gutter, the ink is drawn, the concrete is compacted, and the finish is adjusted to the slope of the water channel. And so on. In particular, concrete placement according to the drainage gradient is a difficult and difficult work condition, and this solution has been desired.

[0004] For this reason, various means have been developed for inverting concrete, such as an automatic setting machine capable of setting concrete without relying on humans. It was unsuitable for use, and had to rely on conventional double tapping.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been developed to solve this problem, and uses a precast inverted plate as well as a precast basic plate, and forms the base plate before disposing the gutter block. Laying, mortar is laid on top of this, and invert concrete slabs are placed on top of this before solidification according to the drainage gradient, and then gutter blocks are constructed so as to straddle the invert concrete slabs to construct gutter channels. Is what you do.

[0006]

[Function] Therefore, the mortar that forms the drainage gradient can be easily placed on the laid foundation slab, so the work is easy. Spread the inverted concrete slab on the soft mortar and tap lightly. The work can be carried out extremely smoothly by setting up according to.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view showing the structure of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a completed perspective view. In the figure, G is a foundation ground made of crushed stone or sand, on which a precast foundation concrete slab (1) is laid. The width of this basic concrete slab is changed to 50-150 mm in accordance with the weight of the gutter block and the ground condition, and the length is 2.0 m, which is thinner, in accordance with the total width of the gutter block and the ground condition. In this case, it can be changed as appropriate. On this base plate (1), a precast inverted plate (2) for forming the bottom plate of the gutter block B is placed. The width of the invert plate is set to be 20 to 40 mm smaller than the inner width of the side groove block, the thickness is fixed to 50 mm, and the length is set to 1.0 to 1.5 m for easy handling. Before mounting the inverted plate, mortar (3) is provided at the position where the inverted plate is to be mounted.

The mortar (3) is provided with a drainage gradient in the invert plate to be used as a bottom plate of the side groove block B, and is provided on the width of the invert plate. Before the mortar (3) is solidified, the inverted plate (2) is placed on the drainage gradient to form a foundation. In this case, when the mortar is rapidly solidified in the construction, it can be solved by using an ultra-high strength mortar.

Then, the side groove block B is arranged on the base plate so as to straddle the invert plate (2), and the joint surface between the inverted plate (2) and the side wall of the side groove block B and the base plate (1) and the side wall are connected. The side surface groove shown in FIG. 2 is completed by injecting and filling the mortar (4).

[0010]

According to the present invention, as described above, the use of the precast invert plate (2) as well as the precast basic plate (1) allows not only free installation gradients and drainage gradients of the gutter blocks, but also widths. Even if the gutter is narrow and deep, the drainage gradient can be formed on the invert plate that becomes the bottom plate at the time of foundation formation, so the gutter construction work can be performed smoothly,
It has an excellent work effect in the construction of curved sections, corners or short distances.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration of the present invention.

FIG. 3 is a partial perspective view of a completed gutter.

[Explanation of symbols]

 (1) Precast basic version (2) Precast inverted version (3) Mortar (4) Filling mortar

Claims (1)

(57) [Claims] 1. A base plate is laid on a base ground using a precast base plate and a precast invert plate, and a mortar is laid on the base plate. A method for constructing a foundation for a free-gradient gutter, characterized in that the foundation is constructed by mounting together and the rear gutter block is arranged so as to straddle the invert plate.