JP2552196B2 - How to build a reinforced embankment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a method for constructing a reinforced embankment.

<Prior Art> A reinforced embankment having a rigid wall surface has many advantages as shown in Japanese Patent Application No. 62-174945, and is particularly suitable for construction in narrow places.

However, on the other hand, since the rigidity of the wall surface is high, the flexibility of the reinforcing soil that has been waiting in the past decreases.Therefore, there is a time lag between the time when the embankment is constructed and the time when the wall is placed. Care must be taken to prevent extreme deformation differences.

In addition, due to the characteristics of the reinforcing soil, it is necessary to sufficiently compact the area in which the reinforcing material is arranged so as to remove looseness when the reinforcing material is spread and to make the reinforcing material function sufficiently. is there.

Therefore, at the time of construction, it is necessary to use a soft wall surface that has good followability for deformation, and install a highly rigid wall surface in front of the embankment with the deformation reduced.

As a method of constructing a reinforced embankment having a rigid wall surface, as shown in FIG.
As a temporary restraint, the step of rolling up the edge of the planar reinforcing material b, laying the embankment material c and rolling it up to a predetermined height is repeated until a predetermined deformation is absorbed.

After that, a mold is assembled on the embankment slope and concrete is placed, or earth retaining blocks are stacked on the entire surface and the concrete d for filling is placed.

<Problems to be Solved by the Invention> In the conventional method, since sandbag a is used as a temporary restraint, if the construction quantity increases, a huge amount of manpower is required, which is inefficient.

In addition, the reaction force to resist the fluid pressure of the concrete, which is generated when the concrete is placed, is required.Therefore, it is necessary to embed the anchor material when building the embankment and fix it to the formwork or block, which makes the work complicated. become.

<Purpose of the present invention> The present invention has been made to solve the above-described problems, and uses a self-supporting formwork material that can resist the fluid pressure of concrete, and does not require a conventional sandbag. Therefore, it is an object of the present invention to provide a method for constructing a reinforced embankment that enables efficient construction.

<Means for Solving the Problems> That is, according to the present invention, a self-supporting mold material is erected, and a support member having elasticity is disposed on the surface of the mold material on the embankment body construction side. The planar reinforcing material is laid in a substantially horizontal direction using the supporting member as a guide, and the drainage material is wound around the edge of the planar reinforcing material on the form material side, using the supporting member as a guide.
The embankment material is laid on a portion other than the rolled-in portion of the drainage material on the planar reinforcing material to construct a embankment body, and after constructing one or more layers of this embankment body, the support member is removed and a formwork material is formed. It is a method of constructing a reinforced embankment by placing concrete in a space formed between the drainage material and the drainage material.

<Description of the Present Invention> The present invention will be described in detail below.

<a> Standing of formwork material The formwork material 1 uses a plate body having self-supporting property and rigidity capable of resisting the fluid pressure of concrete.

The form material 1 may be a steel form frame that can be removed later or a concrete panel that can be left as it is and become a part of the wall surface.

A horizontal bottom plate 11 is integrally formed at the lower end of the mold material 1, and a plurality of drain holes 12 are formed in the mold material 1.

Then, as shown in FIG. 2, after the root digging 2 is performed on the ground, the bottom plate 11 of the formwork material 1 is installed in the root digging 2.

In addition, the adjacent formwork materials 1 are connected by engaging the notch portions 13 provided on the side edges of the formwork material 1 as shown in FIG.

After the installation of the mold material 1, as shown in FIG. 3, backfilling 21 is performed in the root digging 2.

As a result, the weight of the backfill 21 acts on the bottom plate 11, and the formwork material 1 can be surely made independent.

<B> Arrangement of Support Member The support member is formed of a member having elasticity.

For example, styrofoam, sponge, foam such as urethane, or mold material made of plastic material such as vinyl chloride,
Or use an air bag.

Specifically, for example, as shown in FIG. 9, a hollow elongated member having a curved support surface 31 and a tapered surface 32 formed on the opposite side can be considered.

By forming the support surface 31 in a curved shape, the drainage material can be easily caught and the local stability of the soil can be secured.

The function of the support member 3 is to guide the sheet-like reinforcing material when it is rewound and to suppress when the drainage material is fed.
The deformation caused by the consolidation settlement of the ground is prevented from being transmitted to the form material 1 as much as possible.

Then, the support member 3 is arranged on the surface of the form material 1 on the embankment body construction side.

When arranging, face the tapered surface 32 to the form material 1 side,
A wedge 4 made of urethane or the like is interposed between the mold material 1 and the support member 3.

Note that, as shown in FIG. 10, it is also possible to employ an integral type support member 9 in which foamed polystyrene, an air bag or the like is attached to the entire surface of the mold material 1 in advance.

<C> Laying of planar reinforcing material As the planar reinforcing material 5, a member having a predetermined strength and drainage property such as geotextile is used.

Then, as shown in FIG. 4, the planar reinforcing member 5 is laid in a substantially horizontal direction using the supporting member 3 as a guide.

<D> Involvement of drainage material Next, using the support member 3 as a guide, the drainage material 6 such as crushed stone is put into the edge of the planar reinforcing material 5, and the end portion of the planar reinforcing material 5 is folded back to drain water. Involve material 6.

<E> Filling the embankment material Further, the embankment material 7 is laid on the portion other than the winding portion of the drainage material 6 on the planar reinforcing material 5 to construct the embankment body,
Roll over.

<F> Removal of support member Each time the embankment is constructed, the wedge 4 is removed and the support member 3 is removed.

The removed support member 3 is installed again on the upper stage, and the next embankment body is constructed.

Then, the embankment is constructed in a single layer or a plurality of layers up to a predetermined height.

When the integrated support member 9 is used, the embankment body is constructed to a predetermined height and then removed.

When using a foam, dissolve it in an organic solvent,
In the case of an air bag, it can be eliminated all at once by bleeding air.

<G> Placing concrete in the body As shown in FIG. 7, the support member 3 is removed, and the form material 1 is removed.
Concrete in the space formed between the drainage material 6 and
81 is placed to build the concrete 8 containing the body.

 This completes the construction of the reinforced embankment.

<Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.

<B> Since the form material is self-supporting, it is not necessary to take a reaction force when placing concrete, and a large-scale reaction force structure is unnecessary.

<B> When the formwork is a concrete panel, it becomes a part of the wall surface as it is, so there is no need to remove the formwork, and the work can be simplified.

<C> Since the sandbag can be omitted by using the supporting member, the sandbag can be omitted.

<D> In the present invention, by installing the self-supporting formwork in advance, it is possible to achieve a safe construction for embankment construction and prevent outflow of sediment.

Then, the difficulty of winding the drainage material, which is an adverse effect of installing the formwork in advance, can be solved by using the support member.

[Brief description of drawings]

FIG. 1: Perspective view of the entire reinforced embankment of the present invention FIG. 2: Explanatory diagram of standing process of form material FIG. 3: Explanatory diagram of arranging support member and laying planar reinforcing member FIG. : Illustration of the process of rolling in the drainage material Fig. 5: Illustration of the process of removing the support member Fig. 6: Explanatory diagram of the completed construction of the embankment Fig. 7: Diagram of the pouring process of the barrel filling concrete Fig. 8 : Explanatory view of the notch portion of the mold material Fig. 9: Explanatory view of the support member Fig. 10: Explanatory view of the integral support member Fig. 11: Explanatory view of the prior art

Claims (1)

(57) [Claims] 1. A self-supporting formwork material is erected, and an elastic support member is arranged on the surface of the formwork material on the side where the embankment is constructed, and a planar reinforcing material is provided by using this support member as a guide. Laying in a substantially horizontal direction, and using the support member as a guide, wrap the drainage material around the edge of the planar reinforcement material on the side of the formwork, and further on the area other than the rolled-in portion of the drainage material on the planar reinforcement material. After filling the embankment material to construct the embankment body and constructing this embankment body in one or more layers, the support member is removed and concrete is poured into the space formed between the form material and the drainage material. How to build and build a reinforced embankment.