JP5874938B2 - Concrete piece protection sheet - Google Patents

Description

  The present invention relates to a concrete piece protective sheet that covers a wall surface of a concrete structure such as a tunnel or a building to prevent falling off.

  Conventionally, in tunnels constructed of concrete, bricks, etc., cracks may occur in the lining due to various factors such as aging and ground deformation, and the wall surface may be partially peeled off. A concrete piece protective sheet is known in order to prevent such concrete pieces from peeling off.

  For example, the resin base material formed in a mesh shape is arranged on the tunnel wall surface so as to cover the periphery of the tunnel wall surface with a transparent or translucent adhesive by arranging the resin base material in a range where cracks or peeling occurs. There is a method of bonding (see Patent Document 1).

  In this method, since the adhesive is attached to the entire surface of the repair site, the wall surface can be prevented from being peeled off, and the structure can be repaired stably for a long time. Further, the use of a transparent adhesive makes it possible to visually check the state of the wall surface even after construction.

JP 2001-355343 A

  However, for example, in the case of a wall surface of a brick tunnel, water on the back side of the brick permeates and leaks from the joint where the crack has occurred. For this reason, in the said structure, there exists a problem which a water leak falls directly from the water leak location, and is dripped at the vehicle etc. which pass the inside of a tunnel. Further, for example, in the case of a tunnel in which rails are laid in a railway tunnel or the like, there is a possibility that electric contact may occur if these dripping water droplets are applied to a rail that is energized. Furthermore, in winter, water droplets of water leakage may form icicles on the net or the resin base material, and there is a possibility that the vehicle body or the like may be damaged by dropping them onto the vehicle or the like.

  Then, this invention solves such a problem, and makes it a subject to provide the concrete piece protective sheet which made it leak water while preventing peeling of a concrete piece.

In order to solve the above problems, the concrete piece protection sheet according to claim 1 of the present invention is installed on the wall surface of the structure and on one end surface side of the sheet member, and maintains its shape. A shape-retaining band that imparts a property, and a cushion material that protrudes along the wall surface and is installed on the other end surface side of the sheet member, and forms a water conduit in the gap between the wall surface and the sheet member. Ri Na and integrated by hot pressing, the shape-retaining strip is composed of a plurality of longitudinal bands body and horizontal band member, it forms a first compartment group and the second parcels having different compartment area, The cushion material is installed on the first section group side, and in the first section constituting the first section group, at least two of the vertical band body and the horizontal band body configuring the shape retention band An anchor bolt is inserted through a holding plate that contacts the belt. It is characterized in that fixed to the wall by preparative.

Moreover, the concrete piece protection sheet according to claim 2 of the present invention is the concrete piece protection sheet according to claim 1, wherein the cushion material is a width dimension of the vertical belt body at a position facing the vertical belt body. It is installed so as to correspond to at least .

In addition, the concrete piece protective sheet according to claim 3 of the present invention is the concrete piece protective sheet according to claim 1 or 2 , wherein the shape retaining band is more than the partition area of the first partition group. The division area of the two division groups is set to be large, and the first division group is formed at both left and right ends of the second division group.

Moreover, the concrete piece protection sheet according to claim 4 of the present invention is the concrete piece protection sheet according to any one of claims 1 to 3 , wherein the concrete piece protection sheet is between the sheet member and the pressing plate. A seal member through which the anchor bolt penetrates is installed .

Moreover, the concrete piece protective sheet according to claim 5 of the present invention is the concrete piece protective sheet according to any one of claims 1 to 4 , wherein the sheet member has an air layer in a gap between the layers. It is formed from a plurality of layers provided .

The concrete piece protection sheet according to claim 6 of the present invention is the concrete piece protection sheet according to any one of claims 1 to 5, wherein a thermoelectric member is provided inside the sheet member. It is.

  In the concrete piece protective sheet according to the present invention, the sheet member, the shape retention band and the cushion material are integrally formed by heat and pressure molding, so that assembly work is not required at the installation work site, and the installation work time is shortened. Can be installed easily.

  Moreover, the sheet member prevents the concrete piece from peeling off, and a water conduit is formed between the sheet member and the wall surface via a cushion material, so that water leaked from the wall surface is dropped into the structure. There is nothing.

It is a perspective view of the concrete piece protection sheet in the Example of this invention. It is sectional drawing of the state which installed the concrete piece protective sheet in the Example of this invention in the tunnel. It is the elements on larger scale of FIG. 2 of the concrete piece protection sheet | seat in the Example of this invention. It is a partially broken perspective view of the state which installed the concrete piece protection sheet in the Example of this invention in the tunnel. It is sectional drawing of the state which installed the concrete piece protective sheet in another Example of this invention in the tunnel.

  Hereinafter, a concrete piece protective sheet according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a concrete piece protective sheet. FIG. 2 is a cross-sectional view of the concrete piece protection sheet installed in the tunnel. FIG. 3 is a partially enlarged view of FIG. FIG. 4 is a partially broken perspective view of the concrete piece protection sheet installed in the tunnel.

  As shown in FIG. 4, the concrete piece protection sheet 1 is installed on the wall surface of a concrete structure such as a tunnel or a building. In the present embodiment, the concrete piece protection sheet 1 is installed on the curved wall surface W in the tunnel T. A direction from the ground side of the tunnel T to the ceiling side along the curved wall surface W is defined as a vertical direction, and a full length direction of the tunnel T is defined as a horizontal direction.

  A concrete piece protective sheet 1 according to an embodiment of the present invention is installed on a sheet member 2 stretched on a curved wall surface W in a tunnel T and one end surface side of the sheet member 2 as shown in FIGS. The shape retention band 3 and the cushion material 8 which is installed on the other end surface side of the sheet member 2 and forms the water conduit 9 are configured.

  The sheet member 2 is made of a synthetic resin such as vinyl chloride suitable for flexibility and flexibility. The sheet member 2 is preferably transparent so that the peeled state of the curved wall surface W in the tunnel T or the peeled pieces can be visually observed. Further, in order to give rigidity to the sheet member 2, a flexible reinforcing bar (not shown) can be provided inside the sheet member 2. The reinforcing bars can be provided only in one direction with respect to the sheet member 2, or can be provided in a lattice shape that is orthogonal to each other and has two directions, but is not limited thereto.

  The shape retention band 3 imparts shape retainability that allows shape retention from the outside of the sheet member 2. The shape retaining band 3 is formed in a size substantially the same as that of the sheet member 2 and is made of, for example, fiber reinforced plastic (FRP) or the like, and is integrated with one end surface side of the sheet member 2 by known heat and pressure molding. . The shape retaining band 3 can be provided with only a plurality of vertical belt bodies 4 provided along the curved surface from the ground side toward the ceiling of the tunnel T, or provided along the longitudinal curved surface of the tunnel T. It is also possible to provide only the horizontal band 5 to be provided. Further, the horizontal band 5 can be provided orthogonally to the vertical band 4, and the present invention is not limited to this, and each can be crossed at a predetermined angle.

  In the present embodiment, as shown in FIG. 1, the shape retaining band 3 includes two vertical strips 4 extending in parallel with an interval of about 25 mm to 100 mm as a set, and the set is about 250 mm to 500 mm. A total of two sets are provided in the horizontal direction with an interval, and the horizontal band 5 is provided with a predetermined number in the vertical direction with an interval of about 250 mm to 500 mm.

  That is, in the present embodiment, the first section 6 having a small area defined by the one set of the vertical strips 4 and the two horizontal strips 5 and the vertical sections located on the inner side of the two adjacent sets. A second section 7 having a large area defined by the band 4 and the two horizontal bands 5 is formed. Moreover, the 1st division 6 or the 2nd division 7 forms a 1st division group or a 2nd division group by forming continuously in the up-down direction, respectively. Therefore, the shape retaining band 3 is set so that the partition area of the second partition group is larger than the partition area of the first partition group, and the first partition group is formed at the left and right ends of the second partition group.

  The cushion material 8 forms a gap between the curved wall surface W in the tunnel T and the sheet member 2, and forms a water conduit 9 for guiding water leaking from the curved wall surface W. The cushion material 8 is made of, for example, rubber, elastic synthetic resin, or the like, and is integrally formed on the other end surface side of the sheet member 2 by known heat and pressure molding.

  In the present embodiment, the cushion material 8 is formed in a longitudinal shape as shown in FIGS. 1 and 3 and is installed so as to cover at least the width dimension of the first section 6. Further, from the viewpoint of improving the shape retaining property to the sheet member 2 in the one set of vertical strips 4, it is more desirable that the width of the cushion material 8 is substantially equal to the interval between the one set of vertical strips 4. . Thereby, the thickness dimension of the cushion material 8 forms a space between the curved wall surface W and the seat member 2, and becomes a water guide path 9 for guiding water leaking from the curved wall surface W.

  In this way, the concrete piece protective sheet 1 in which the sheet member 2, the shape holder 3 and the cushion material 8 are integrally formed by heat and pressure molding is attached to the curved wall surface W in the tunnel T as follows. .

  As shown in FIGS. 2 to 4, the concrete piece protective sheet 1 is installed on a curved wall surface W in the tunnel T such as a damaged part where peeling occurs, a damaged part where water leaks, or a joint between segments. The That is, the concrete piece protection sheet 1 is stretched along the curved wall surface W. Specifically, the concrete piece protection sheet 1 is stretched so that the longitudinal direction thereof follows a curved surface from the ground side toward the ceiling of the tunnel T. At this time, it can of course be installed on the entire circumferential surface of the tunnel T, or it can be installed only in a part.

  Further, since the concrete piece protection sheet 1 is stretched in a curved state, the cushion material 8 comes into contact with the curved wall surface W in close contact. In this state, the concrete piece protection sheet 1 is fixed by penetrating the sheet member 2 and the cushion material 8 with the anchor bolts 11 through the pressing plate 10 and driving them into the tunnel T.

  More specifically, the anchor bolt 11 inserted through the presser plate 10 is fixed to the curved wall W while the substantially circular presser plate 10 is in contact with at least two strips forming the first section 6. The concrete piece protection sheet 1 is fixed by tightening with the nut 12 of the anchor bolt 11. As a result, the pressure due to the tightening force of the nut 12 is transmitted to the belt body through the presser plate 10, and is transmitted to the seat member 2 and the cushion material 8, so that the cushion material 8 adheres along the curved wall surface W. It can be fixed with.

  At the mounting position of the pressing plate 10, for example, it is positioned at the upper end or the lower end of the first section 6 so as to come into contact with three strips of one set of vertical strip 4 and one horizontal strip 5. Of course, it may be arranged, or it may be arranged so as to abut against two bands of a set of vertical bands 4 other than the upper end or the lower end.

  Then, the concrete piece protection sheet 1 is fixed to the curved wall surface W, so that a water guide path 9 is formed between the seat member 2 and the curved wall surface W to guide water leakage through the gap of the cushion material 8. Is done. Moreover, the continuous water conduit 9 can be formed by stretching the plurality of concrete piece protection sheets 1 along the curved wall surface W. At this time, it can attach so that a clearance gap may not arise by superposing | polymerizing and connecting the edge parts of the concrete piece protection sheet 1. FIG.

  Thereby, the water leaked from the curved wall surface W can be guided to the left and right ends of the tunnel T along the curved wall surface W side of the sheet member 2 without being dropped into the tunnel T. Furthermore, in winter, icicles are not formed at various places on the concrete piece protective sheet 1.

  As described above, according to the concrete piece protective sheet 1 according to the embodiment of the present invention described above, since the component parts are integrally formed by heat and pressure molding, assembly work is not necessary at the installation work site. The working time can be shortened, and it can be easily installed. Moreover, since the sheet member 2 is made transparent, the peeled state of the curved wall surface W in the tunnel T or the peeled pieces can be visually checked, so that the inspection work becomes easy. Furthermore, since the water guide path 9 is formed between the seat member 2 and the curved wall surface W via the cushion material 8, the water leaked from the curved wall surface W is not dropped into the tunnel T.

  Moreover, it is not restricted to embodiment mentioned above, Of course, it can change suitably in the range which does not deviate from the meaning. It is desirable that the concrete piece protective sheet 1 is formed in a necessary size from the viewpoint of installation range, transport size, manufacturing viewpoint, and the like, and a plurality of them are combined.

  Moreover, in the said Example, although the sheet | seat member 2 is made into the single layer structure, it is not restricted to this. It is also possible to form the sheet member 2 from a multi-layer structure such as two layers or three layers and to provide an air layer in the gap between the layers. Thereby, it can be set as the sheet | seat member which showed the heat insulation effect, and is more effective in a cold district etc. Furthermore, a thermoelectric member such as a heating wire may be disposed inside the single layer structure in the sheet member 2 or in the gap (inside) between the layers in the multiple layer structure, and connected to an external power source.

  Furthermore, although the cushion material 8 is formed in the longitudinal shape of the concrete piece protection sheet 1 and covers at least the width dimension of the first section 6, it is not limited to this. It is also possible to divide the cushion material 8 in the vertical direction so as to have a width dimension substantially equal to that of the vertical strip 4 and to dispose the cushion material 8 so as to face the vertical strip 4. That is, it is only necessary that the cushion material 8 is provided at a position facing the vertical belt body 4 so as to correspond at least to the width dimension of the vertical belt body 4. Further, the cushion material 8 can be installed in the region of the second section 7.

  Furthermore, when the concrete piece protection sheet 1 is fixed by the anchor bolt 11, a seal member 13 can be installed between the sheet member 2 and the pressing plate 10 as shown in FIG. The seal member 13 is made of, for example, rubber, elastic synthetic resin, or the like, and is fixed by being penetrated by the anchor bolt 11 and is installed in a compressed state in the gap between the sheet member 2 and the pressing plate 10. Thereby, the periphery of the anchor bolt 11 can be stopped. That is, even when the cushion material 8 having a width dimension substantially the same as that of the vertical strip 4 is provided, the periphery of the anchor bolt 11 can be stopped. Further, in the case where the cushion material 8 having at least the width of the first section 6 is provided, the periphery of the anchor bolt 11 can be stopped with a double structure by the cushion material 8 and the seal member 13. This is preferable.

DESCRIPTION OF SYMBOLS 1 Concrete piece protection sheet 2 Sheet member 3 Shape maintenance band 4 Vertical strip 5 Horizontal strip 6 First division 7 Second division 8 Cushion material 9 Water guideway 10 Holding plate 11 Anchor bolt 12 Nut 13 Seal member

Claims (6)

A sheet member stretched on the wall surface of the structure;
A shape-retaining belt installed on one end face side of the sheet member and imparting shape-retaining properties;
A cushion material that protrudes along the wall surface and is installed on the other end surface side of the seat member, and forms a water conduit in the gap between the wall surface and the sheet member,
Ri name was integrated by hot pressing the,
The shape retaining band is composed of a plurality of vertical belt bodies and horizontal belt bodies, and forms a first partition group and a second partition group having different partition areas, and the cushion material is disposed on the first partition group side. Installed,
In the first section constituting the first section group, by means of anchor bolts via a pressing plate that abuts at least two of the vertical band body and the horizontal band body constituting the shape retaining band. A concrete piece protective sheet fixed to the wall surface . The concrete piece protection sheet according to claim 1, wherein the cushion material is installed so as to correspond at least to a width dimension of the vertical belt body at a position facing the vertical belt body. The shape retention band is set so that the partition area of the second partition group is larger than the partition area of the first partition group, and the first partition group is formed at both left and right ends of the second partition group. The concrete piece protective sheet according to claim 1 or 2 . The concrete piece protective sheet according to any one of claims 1 to 3 , wherein a seal member through which the anchor bolt penetrates is installed between the sheet member and the pressing plate. The concrete piece protective sheet according to any one of claims 1 to 4 , wherein the sheet member is formed of a plurality of layers in which an air layer is provided in a gap between the layers. The concrete piece protection sheet according to any one of claims 1 to 5 , wherein a thermoelectric member is provided inside the sheet member.

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