JPS5847812A - Artificial river bed - Google Patents

Abstract

PURPOSE:To easily obtain an artificial river bed by a method in which a sheet- form water-proof material with a projection is laid on a desired site, a reinforcing material provided on the water-proof material is fixed with the projection, and then cement mortar is placed. CONSTITUTION:Ground 7 is excavated to form an artificial riverbed-forming site 8. Then, sheeted water-proof material 10 with a projection 9 is laid on the riverbed-forming place 8, and reinforcing material 11, e.g., metal netting 11a, and mesh bar 11b, etc., is provided on the water-proof material 11. The reinforcing material 11 so provided is fixed on the projection 9 by using a fitting part 12, e.g., staple, etc., and then cement mortar 13 is placed on them by trowel coating or spray gun to construct an artificial river bed 6. As needed, natural stones 14 are laid on the artificial river bed.

Description

[Detailed Description of the Invention] This invention uses cement mortar (hereinafter referred to as ferrocement) reinforced with reinforcing members such as wire mesh and sheet-like waterproof members in artificial riverbeds including reservoirs, sedimentation tanks, agricultural waterways, etc. It relates to an artificial river bed that is integrally formed and constructed.

Conventionally, most of this type of artificial riverbed has been made of cast-in-place reinforced concrete, and its outline is explained based on Figure 1. First, the ground (1) t
The zelkova was cut to a size considerably larger than the cross-sectional shape of the riverbed to be constructed, the foundation chestnut stones were laid down, and the ground was compacted. Next, after the reinforcing reinforcement and formwork assembly work is completed, contour (1) is poured, and this concrete (6) is removed from the mold after hardening. Furthermore, artificial riverbeds are constructed by fixing decorative O-tenpot stones (2) on the surface of concrete or by creating uneven patterns with mortar.

However, the artificial riverbed described above requires a great deal of labor for reinforcing and assembling formwork, and has the disadvantage that the concrete drawing tends to be straight. In order to finish the river bed with an uneven surface, it is necessary to apply mortar after removing the mold.
! In addition, making the riverbed meander in harmony with nature is limited by the extremely complicated formwork and reinforcement work, and there are many restrictions on the design of the riverbed. In addition, because the river bed has a large weight,
When constructing an artificial riverbed on soft ground, it is necessary to take additional measures to prevent riverbed subsidence, etc. Furthermore, to prevent cracks due to drying shrinkage of reinforced concrete,
There are disadvantages in terms of workability and economy, such as the need to insert artificial joints at 6s intervals.

The purpose of this invention is to eliminate the above-mentioned drawbacks, and to obtain an artificial river bed that is in harmony with nature with a free design, is economical, and is extremely easy to construct.The structure of the artificial river bed has protrusions on the construction surface. A sheet-like waterproof member is laid down, a reinforcing member placed on the sheet-like waterproof member is fixed with the projections, and cement mortar is cast.

The details will be explained below based on the drawings.

FIG. 2 shows a schematic sectional view of the artificial river bed in this invention, and FIG. 5 shows an enlarged view of part A thereof. In Figure 2 and Figure 5, first, the ground 0 is excavated and compacted along the cross-sectional shape of the planned artificial riverbed (6), and the artificial riverbed construction surface (
2) Form. Next, a sheet-like waterproofing member @ having protrusions @) is installed on the artificial riverbed construction surface (6), and reinforcing member shafts such as wire mesh (11a) and mesh reinforcement (11b) are arranged on the sheet-like waterproofing member shaft. Set up The provided reinforcing member U is attached to the protrusion 11 using a fixed member such as a staple.
61) The artificial river bed (6) of the present invention is constructed by fixing it on top and applying cement mortar with a trowel or blowing it with a mortar gun. Moreover, it is also possible to lay natural stone a◆ etc. according to necessity.

Here, the sheet-like waterproof member@ is a rubber sheet, PVC,
It can be made of synthetic resin such as polyethylene that is highly waterproof and durable, and if it is laid on the artificial riverbed construction surface (8) and coated with a primer such as rubber emulsion, the adhesion strength with cement mortar can be increased. You can also do it. Furthermore, the protrusions of the sheet-like waterproof member can have various shapes and arrangements as shown in FIGS. 4 to 6. That is, the reinforcing member 0 disposed on the shaft of the sheet-like waterproof member is 50a+~
If it can be fixed on the protrusions e) at intervals of one vehicle, the protrusions e) may be round, square, scattered or continuous, and arranged randomly, in a grid or in a zigzag pattern. It's a storm because of what I installed. In addition, this protrusion (9) may be formed integrally with the sheet-like waterproof member, or the protrusion (9) may be attached to the shaft of the sheet-like waterproof member using an adhesive or the like. %/%.

In addition, reinforcing members such as wire mesh (11 m) and mesh reinforcement (11 b) are constructed with appropriate lI diameter and mesh spacing.
UJ afternoon bed. In terms of scale, C, lkK, frL<yu.

You can use them together.

As explained above, the artificial riverbed of this invention can be constructed in an extremely elegant manner without using formwork, etc., and has a free cross-section along the garden grounds, meandering in harmony with nature. be able to.

Moreover, the wire mesh and mesh reinforcement are fixed with the protrusions of the sheet-like waterproofing member, creating a sense of unity between the 7erocement and the sheet-like waterproofing member, and the thickness is approximately 10% less than that of conventional artificial riverbeds made of reinforced concrete. It is possible to do so. Therefore, its own weight is light, it is possible to construct an artificial riverbed even on soft ground, and uneven settlement is less likely to occur. Furthermore, since ferrocement itself has a high resistance to cracking due to drying shrinkage, the intervals between artificial joints can be made considerably larger than with reinforced concrete, and even if cracks occur in ferrocement, sheet-like waterproofing materials can be used. This has the advantage that there is no risk of water leakage.

The above description has mainly been about artificial riverbeds, but it goes without saying that the present invention can also be applied to other artificial beds such as agricultural waterways, reservoirs, and sedimentation tanks.

[Brief explanation of drawings]

Figure 1g1 is a schematic sectional view of a conventional artificial riverbed, Figure 2 is a schematic sectional view of the artificial riverbed of the present invention, and Figure 5 is an enlarged view of section A in Figure 2. It is a top view of a member. In the diagram, (1)...ground, (2)...foundation stone, (6)...
・Concrete, (4) -... Natural stone, (2)... Mortar, (6)... Artificial riverbed, (to)... Ground, (
2)...Artificial riverbed construction surface, @>-...Protrusion, Zeng-...
Sheet-like waterproof member, Moe...Reinforcement member, Zeng...Fixing member, Hemp cement mortar, A4...Natural stone. Agent Hisashi 1) Hidetaka

Claims (1)

[Claims] A sheet-like waterproofing member having protrusions is installed on the construction surface of the artificial river bed, and fixed by the protrusions, which are reinforcing members arranged on the scissors sheet-like waterproofing member, and cement mortar is cast. Artificial riverbed.