JP5317684B2 - Cement-based hardened panel and wall surface structure of embankment using the same - Google Patents

Description

  The present invention mainly relates to a cement-based hardened material panel used in the field of construction and civil engineering, and more particularly to a cement-based hardened material panel formed thinly using a new material and a wall surface structure of a embankment surface using the same. Is.

In the embankment structure for protecting slopes, as a structure covering the embankment surface, a structure in which concrete blocks and concrete panels are arranged along the embankment surface is widely adopted.
For example, as described in Japanese Patent Application Laid-Open No. 2008-133682, a precast concrete panel is installed away from the embankment surface, a tension rod is inserted between the upper and lower panels, and a grout material is injected and fixed. Is a construction where the anchor material is stretched and repeatedly filled.

In the construction of the embankment structure as described above, since the concrete block or panel is a rigid structure that can withstand the embankment pressure behind, it is extremely thick and heavy, and needs to be transported and installed by heavy machinery.
In addition, it is complicated and requires a lot of work to connect the upper and lower blocks and panels, and to fix them to the backfill.
For this reason, there has been a demand for a panel that is light in weight, can be transported and installed by human power, and can be easily installed instead of a conventional rigid block or panel.

However, on the other hand, the conventional concrete panel has a reinforcing bar disposed therein as a reinforcing material. However, when it is made thin in order to reduce the weight, it means that the covering of the reinforcing bar is also thinned.
When the cover is thin, there is a risk of corrosion of the internal rebar, so there is a limit to making it thin.
JP 2008-133682 A

  The problem to be solved is to provide a cement-based hardened material panel that is thin and lightweight, has no problem of corrosion of reinforcing bars, and can be transported and installed by human power, and a wall surface structure of the embankment surface using the same. That is.

The cement-based hardened material panel according to the present invention is a cement-based hardened material panel that is arranged on the embankment surface and covers the embankment, and a reinforcing material having rigidity entangled in a loofah fiber shape by extruding a thermoplastic synthetic resin, It is placed in the thickness of a panel filled with cement-based hardener in the formwork .
Rousset instrument curing material panel has all the present invention, there is attached a cloth-like reinforcing material such as a nonwoven fabric on at least one side surface of the front and back surfaces.
Rousset instrument curing material panel has all the present invention, on one side surface of the front and back surfaces, it is connected a copy material for supporting the panel is embedded in the embankment.
Furthermore, Ruse instrument curing material panel has all the present invention, the above-mentioned copy material is the reinforcing material and another body, or one end of the reinforcing material are embedded in the panel, or the refrain material the It is formed by extending a part of the reinforcing material.

The wall surface structure of the embankment surface according to the present invention is a wall surface structure that covers the embankment by placing any of the above-mentioned cement-based hardener panels on the embankment surface, and has a plurality of steel wall frames on the embankment surface side. Stack up and perform embankment behind the steel wall frame, and install a cement-based hardened material panel with an adjustment material attached in a horizontal direction along the embankment surface and a back-up material on the back side. It disposed a copy material by come up to the frame covers the embankment surface with the cement-based hardening material panel, support the cement hardener panel a copy material extending from the rear surface of the cement hardener panel embedded in the embankment To do .
The wall surface structure of the other embankment surface according to the present invention is such that the cement-based hardener panel is stacked in a plurality of stages, and the lower end of the upper-stage cement-based hardener panel is lower than the lower-stage cement-based hardener panel. It overlaps the upper end surface side.

This invention consists of the above structures and can obtain the following effects.
<a> As a reinforcing material for the cement-based hardener, a material entangled with a large number of synthetic resin fibers is used, so there is no problem of corrosion of the reinforcing bars, and it is necessary to consider that the cover becomes smaller by making it thinner There is no at all.
<B> Since a reinforcing material in which a large number of synthetic resin fibers are entangled is embedded in the thickness of the panel, the reinforcing material serves to connect the cement-based hardener, and the problem of breakage and chipping hardly occurs.
<C> Since it is not necessary to consider the cover thickness and can be formed extremely thin, it is lightweight, can be transported and installed by human power, and the construction becomes remarkably easy.
<D> A reinforcing material that is a synthetic resin fiber is used as the reinforcing material, and the manufacturing cost can be reduced.
<E> By sticking a reinforcing material to at least one of the front and back surfaces, the panel can be prevented from being further bent or cracked.
<F> By extending the retaining material from the surface on one side of the front and back surfaces, the retaining material is extended into the embankment, and the panel can be easily fixed and installed on the embankment surface by pressing it.
<G> By making the retentive material a part of the reinforcing material, it is possible to easily fix the retentive material to the panel.
<H> Since it is thin, it can be freely cut to the required dimensions.
<I> Along with the embankment surface, a cement-based hardened material panel is attached along the surface of the embankment so as to be continuous in the horizontal direction, and a back-up material is attached to the back side. By extending the retaining material from the adjustment material onto the embankment and pressing the retaining material with the embankment on the embankment, adjacent panels can be accurately aligned and installed easily by human power.
<J> Cement-based hardener panels are stacked in a plurality of stages, and the lower end of the upper-stage cement-based hardener panel overlaps with the upper-end surface side of the lower-stage cement-based hardener panel. Even if there is subsidence, the overlapping part absorbs the subsidence and the appearance does not deteriorate.

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.
<1> Reinforcing Material The cement-based hardened material panel 1 of the present invention uses a material in which a large number of synthetic resin fibers 3 are entangled as a reinforcing material 2 embedded therein.
A variety of synthetic resins can be used, and those that are intricately entangled by extruding a thermoplastic resin such as polypropylene can be used.
Entangling is a state in which twisted fibers are entangled in a complex / multiple manner, and is similar to a state in which, for example, dried loofah fibers are entangled in a complex manner.
A synthetic resin fiber having a thickness of about several hundred microns to several mm has a certain degree of rigidity and is suitable as a reinforcing material.

<2> Cement-based hardener In the examples, mortar is used as the cement-based hardener 4, but cement milk or concrete can also be used.
The above-described reinforcing material 2 is spread in the mold 5.
The thickness of the reinforcing material 2 is slightly thinner than the thickness of the panel to be molded.
That is, the thickness is set to be about 5 to 10 mm lower than the finished surface of the panel 1 when the mold 5 is filled with the cement hardening material 4.
After the cement-based hardener 4 is poured into the mold 5, the table is vibrated so that the hardener 4 enters between the synthetic resin fibers densely.
As the formwork 5, it is also possible to use a decorative face plate having an uneven pattern on the bottom surface.
That is, when the hardening material 4 is poured into the mold 5, the bottom side becomes the front side of the panel 1, and the top side becomes the back side of the panel 1.
The panel 1 of the Example shape | molded as mentioned above is 10-20 mm in thickness, The vertical and horizontal length of the plane is 700 mm x 900 mm.
The numerical values described above are merely examples, and the cement-based hardened material panel 1 according to the present invention can be a panel 1 of various sizes.

<3> Reinforcing Material After the vibration is applied to the mold 5, the reinforcing material 6 is affixed to the upper surface of the cement-based hardened material 4 that has not yet dried, that is, the back surface side facing the embankment side.
As the reinforcing material 6, a non-woven fabric, a woven fabric, a mesh fabric or the like can be used, but a wooden board or a synthetic resin board can also be used.
In the embodiment, a non-woven fabric is used as the reinforcing material 6, and another non-woven fabric is attached to the upper part and the lower part of the panel 1.
The lower reinforcing material 6 is stuck to a position slightly above the middle of the upper and lower sides of the panel 1, and a part of the reinforcing material 6 is extended to the back side from there so as to be a holding material 7 described later.
The reinforcing material 6 can be bonded by using an adhesive instead of the adhesive force of the curing material 4.
The reinforcing material 6 and the retaining material 7 also serve as a cushioning material at the time of stocking or transportation, and the portion of the retaining material 7 is wound around the panel 1 as shown in FIG.

<4> Retaining Material The reserving material 7 is a member that extends into the embankment and fixes the panel 1, and as described above, a part of the reinforcing material 6 may be extended to the back side. May be attached to the surface of the reinforcing material 6 using a separate member.
As shown in FIG. 5, it is also possible to use a belt-like member in which one end is embedded in the panel 1 and the rest is extended to the back side.

<5> Embankment surface The case where a wall surface structure is constructed on the embankment surface using the cement-based hardener panel 1 as described above will be described.
A steel wall frame 9 in which the reinforcing bars 8 are arranged in a net-like manner at intervals of about 10 cm and are bent in an L shape is installed, and the embankment 10 is placed behind the steel wall frame 9.
However, since the interval between the reinforcing bars 8 is relatively large, the steel wall frame 9 is covered with the standing surface 30 cm and the bottom side depth 50 cm, and when the bank 10 is further filled, the upper surface has a depth of about 50 cm. An inner wall sheet 16 is provided to cover the inner wall.
In the embodiment, a nonwoven fabric is used as the inner wall sheet 16.
A steel wall frame 9 is installed on the embankment 10, and the embankment 10 is further placed behind it.

<6> Street adjustment material The adjustment material 11 is attached to the upper end of the steel wall frame 9 horizontally.
The street adjuster 11 is a member having an L-shaped cross section, and includes a horizontal surface and a surface that hangs downward on the embankment surface side.
In this manner, a slitting bolt 14 connected to the reinforcing bar 8 of the steel wall frame 9 is passed through the long hole 13 which is long in the width direction of the adjusting material 11, and the adjusting material 11 is sandwiched from above and below by the screwed nuts 15 and 15. It is fixed with.
In some cases, some of the reinforcing bars 8 of the steel wall frame 9 are protruded upward from the other reinforcing bars 8, and threading is performed around the protruding reinforcing bars 8. It is also conceivable to use the nuts 15 and 15 screwed to the reinforcing bars 8 so as to sandwich the adjusting material 11 from above and below by using it instead of the cutting bolt and passing it through the long hole 13 of the adjusting material 11.

<7> Panel installation The back side of the cement-based hardened material panel 1 is in contact with the surface side of the adjustment material 11, and the back embankment is maintained in the state where it passes through the backing material 7 and is maintained at the same height as the horizontal surface of the adjustment material 11. Spread on top of 10.
The earth and sand are placed on the retentive material 7 and pressed. The bank 10 is pressed and the panel 1 is fixed.

<8> Stacking of panels After the installation of the lower panel 1, the installation of the steel wall frame 9 and the embankment 10 are repeated, and the adjustment material 11 is attached to the appropriate position.
The panel 1 is again installed and fixed in the above-described procedure, but the lower end portion of the upper panel 1 is overlapped with the upper end portion on the surface side of the lower panel 1.
In this way, the upper panel 1 and the lower panel 1 are overlapped to bring out a taste like an armored wall, and the lower end surface of the upper panel 1 and the upper end surface of the lower panel 1 are butted together. Difficulty can be avoided.
In addition, when the back embankment sinks due to secular change, the amount of settlement can be absorbed by the overlap margin of the upper and lower panels 1, and the appearance is not deteriorated.

<9> Embankment reinforcement material In the figure, 12 is an embankment reinforcement material such as geotextile, and is sandwiched between appropriate positions of the embankment.

  FIG. 5 shows another embodiment of the retentive material 11, which is a belt-like member in which one end is embedded in the panel 1 and the rest is extended to the back side.

Perspective view of cement-based hardened material panel Perspective view of the molded state of the mold Perspective view of installed state of cement-based hardener panel Cross section of wall surface structure of embankment surface Perspective view of another embodiment of cement-based hardened material panel Side view of stacked panels

Explanation of symbols

1: Cement-based hardened material panel 2: Reinforcement material 3: Synthetic resin fiber 4: Cement-based hardened material 5: Mold frame 6: Reinforcing material 7: Retaining material 8: Rebar 9: Steel wall frame 10: Fill 11: Street adjustment Material 12: Filling reinforcing material 13: Long hole 14: Cutting bolt 14: Nut 16: Inner wall sheet

Claims (6)

It is a cement-based hardener panel that is placed on the embankment surface and covers the embankment ,
A rigid reinforcing material extruded from thermoplastic synthetic resin and entangled in the shape of a loofah fiber is placed in the thickness of the panel filled with cement-based hardener in the mold ,
Reinforcing and reinforcing a cloth-like reinforcing material on the back of the panel,
The back surface of the panel is connected to a retentive material embedded in the embankment to support the panel,
Cement hardener panel. The refrain material is the reinforcing material and another member, characterized in that one end of the refrain material are embedded in the panel, according to claim 1 cementitious hardened material panel according. Wherein the copy example material are those formed by extending a portion of the reinforcing material, cement hardening material panel according to claim 1. The cement-based hardener panel according to any one of claims 1 to 3, wherein the reinforcing material is a nonwoven fabric. A wall surface structure covering the embankment by placing the cement-based hardener panel according to any one of claims 1 to 4 on the embankment surface,
Stack the steel wall frame in multiple steps on the embankment surface side, perform embedding behind the steel wall frame,
Along the embankment surface, install the adjustment material as it continues in the horizontal direction,
Covering the embankment surface with the cement-based hardening material panel is disposed a copy material by come up to the steel wall frame,
A support material extending from the back surface of the cement-based hardener panel is embedded in the embankment to support the cement-based hardener panel ,
Wall surface structure of embankment surface.   The cement-based hardener panel is stacked in a plurality of stages, and the lower end portion of the upper-stage cement-based hardener panel overlaps the upper end surface side of the lower-stage cement-based hardener panel. Item 5. The wall surface structure of the embankment surface according to item 5.

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