JP3062467B2 - Sheet holding material, sheet peeling prevention structure, and sheet peeling prevention method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to civil and marine concrete structures such as tunnels, piers, bridge girders, and slopes, as well as to concrete structures such as buildings and condominiums, and various structures such as general wooden houses. The present invention relates to a sheet pressing member, a sheet separation preventing structure, and a sheet separation preventing method used for preventing separation of a sheet member such as a waterproof sheet member or a reinforcing sheet member adhered for waterproofing or reinforcement.

[0002]

2. Description of the Related Art Conventionally, for example, a waterproof sheet material such as a synthetic resin sheet is adhered to a structure such as the roof of a building or the inner surface of a tunnel to prevent inundation. When the structure is a concrete structure, a reinforcing sheet material such as a carbon fiber sheet or an aramid fiber sheet is attached to the surface of the structure in order to reinforce the strength of the concrete.

[0003] Generally, such a sheet material is prepared by applying an adhesive such as a cold-setting resin such as an epoxy resin to the surface of a structure to be adhered, adhering the sheet material from above, and curing the adhesive. A sheet material is adhered to the structure surface.

However, if the adhesive is simply adhered, the sheet begins to peel off from the peripheral portion of the sheet material due to natural deterioration of the adhesive or temperature shrinkage, and further peels off due to rainwater entering from the peeled peripheral portion. Therefore, the following method of preventing sheet peeling has been employed in the related art, because it is not possible to maintain the effect of waterproofing or reinforcement.

That is, as shown in FIG. 9, a predetermined distance (for example,
The sheet pressing member 40 having the insertion holes 43 formed at intervals of 200 mm is placed on the periphery of the sheet material 45 attached to the structure 44, and is fixed to the structure 44 through the insertion holes 43. A nut 46b is screwed into a protrusion of an anchor 46a (corresponding to the support tool 46) with a nut 46b, and the non-ground surface 41b of the sheet pressing member 40 is pressed by tightening the nut 46b, thereby pressing the sheet pressing member 40. The method of fixing is adopted.

[0006] With this construction method, the pressing force due to the tightening of the nut 46b acts on the peripheral portion of the sheet material 45 via the contact surface 41a (one surface side of the sheet pressing material) of the sheet pressing material 40, and the sheet material 45 The effect is obtained that it is pressed against the surface of the structure 44 to make it difficult to peel off.

[0007]

However, in the sheet peeling prevention method using the sheet pressing member 40,
The sheet material 45 around the support tool 46 is relatively difficult to peel off due to the pressing force of the nut 46b, but there is a problem that the sheet material 45 between the support tool 46 and the support tool 46 is easily peeled off.

[0008] Of course, if the tightening of the nut 46b is strengthened, a slight improvement can be achieved, but the force for tightening the nut 46b is naturally limited, and a great effort is required to increase the tightening.

Means for narrowing the fixing interval of the support 46 (increase the number of the support 46) can be considered. However, if the interval is too narrow, the structure is destroyed for fixing the support 46. Therefore, the support 46 cannot be sufficiently fixed, and the fixing operation becomes complicated when the number of the support 46 increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a sheet pressing member and a sheet separation preventing structure which can prevent the sheet material from separating without increasing the number of support members and tightening of the support members. Another object of the present invention is to provide a sheet peeling prevention method.

[0011]

SUMMARY OF THE INVENTION The present inventor has found that when the conventional sheet pressing member 40 is used, the sheet material 45 between the support members 46 is easily peeled off because of the following reason. Paying attention to the point that the pressing force of the support tool 46 does not act so much, the above problem can be solved by using the following means.

[0012]

[0013]

[0014]

[0015]

[0016]

That is, the means is a sheet pressing member for preventing the sheet member 7 adhered to the structure 6 from being peeled off. And the convex portions 25 are formed alternately, and at least the convex portions 25 are formed.
This is a sheet pressing member provided with a pressing member 27 for pressing the sheet.

In the sheet peeling prevention method using the sheet pressing member 20, the grounding surface 21a side of the sheet pressing member 20 is attached to the surface of the sheet member 7 adhered to the structure 6, as described in claim 5. The supporting member 8 is fixed to the structure 6 at both ends of the sheet pressing member 20, and a bendable pressing member 27 is erected on the protruding portions of the two supporting members 8. Recess
The support member 8 fixed to the structure is protruded from the structure 24, and the pressing member 27 is engaged with the protruding portion of the support member 8 in a tension state, and the pressing member 27 forms the convex portion 25 of the sheet pressing member 20. Press the surface.

According to this method, the sheet material 7 adhered to the structure 6 and the sheet material 7
The grounding surface 21a is in contact with the surface of the
And the convex portion 25 are alternately formed in the longitudinal direction.
And the supporting member 8 inserted into the concave portion 24 of the sheet pressing member 20 and fixed to the structure 6. The supporting member 8 is locked in tension by the supporting member 8, and the convex portion 25 of the sheet pressing member 20. The sheet peeling prevention structure including the pressing member 27 that presses the surface is constructed.

In such a sheet peeling prevention structure, although the pressing force of the support 8 directly acts on the surface of the sheet member 7 from the ground contact surface 21a around the concave portion 24 of the sheet pressing member 20, there is no change from the conventional one. The pressing member 27 is locked to the member 8 in a tension state, and the pressing member 27 presses the surface of the convex portion 25 of the sheet pressing member 20. The contact surface 21a of the sheet holding member 20 (the protrusion 25 of the sheet holding member 20)
From the ground contact surface 21a) around the sheet material to the surface of the sheet material 7
Is exerted via the pressing member 27.

Therefore, even if the number of support members and the number of the support members are the same as those of the related art or the number of the support members is reduced, peeling of the sheet material 7 between the support members 8 hardly occurs. It becomes.

As described in claim 2, two elongated projections 28, 28 in the longitudinal direction are provided on the grounding surface 21a side of the pressing member main body 21.
When a sheet pressing member having a plurality of sheet pressing members is used, a sheet separation preventing structure in which the top portion 28a of the long protrusion 28 of the sheet pressing member 20 abuts on the surface of the sheet member 7 is provided. Since the pressing force per contact increases, it is more effective to prevent sheet peeling.

[0023]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a sheet holding member, a sheet peeling prevention structure and a sheet peeling prevention method according to an embodiment of the present invention.

<First Embodiment> Referring to FIG. 1 and FIG.
Reference numeral 1 denotes a pressing member main body made of a flat band-like body, and two elongated projections 3 are juxtaposed in the longitudinal direction on one surface 1a side (ground contact surface 1a side) of the pressing member main body 1. ing.

The two elongated projections 3 are provided on the holding member main body 1.
Is protruded in parallel near the long side edge of. The cross section of the elongated projection 3 is formed in an arc shape. In addition, the cross section of the elongated projection 3 is not necessarily limited to an arc shape, and may be, for example, a polygonal shape such as a substantially triangular shape or a substantially square shape.

Further, a plurality of insertion holes 5 are formed in the holding member body 1 at predetermined intervals between the elongated projections 3. The insertion hole 5 is preferably an elongated hole along the longitudinal direction of the pressing member main body 1.

If the insertion hole 5 is a sheet holding member 10 formed in advance, a hole for inserting the support member 8 when the sheet holding member 10 is fixed to the sheet member 7 will be described later. It is preferable because it is not necessary to pierce, but the insertion hole does not have to be pierced in the holding member body 1 in advance.

The sheet holding member 10 will be described in more detail. The holding member main body 1 has, for example, a length L of 2000 m.
m, the width W is 35 mm, the interval M between the insertion holes 5 is 195 mm,
The size of the insertion hole is 16mm x 8mm, and the height H is 10mm
Is formed. It goes without saying that the sheet holding member 10 is not limited to such dimensions.

A method for preventing sheet peeling using the sheet presser 10 having the above-described structure will be described below. As shown in FIG. 3, the ground surface of the sheet pressing member 10 is placed on the periphery of the sheet member 7 attached to the surface of a structure 6 such as the roof of a building via an adhesive such as a room temperature curable resin. Place 1a side. next,
The anchor 8a and the anchor 8a are inserted into the insertion hole 5 of the sheet holding member 10.
Anchor of support 8 consisting of nut 8b screwed to 8a
8a is inserted and fixed to the structure 6.

After the anchors 8a constituting the support members 8 are fixed to the structure 6 at predetermined intervals in advance, the insertion holes 5 of the sheet pressing member 10 are inserted through the anchors 8a. The sheet holding member 10 may be placed on the surface of the structure 6. When the anchor 8a is inserted, since the insertion hole 5 is a long hole, there is an advantage that the positioning can be easily performed.

The washer 11 is inserted into each of the anchors 8a protruding toward the non-grounding surface 1b of the sheet pressing member 10, and the nuts 8b constituting the supports 8 are screwed and tightened, and all the supports 8 are tightened. Thereby, the sheet peeling prevention structure is constructed.

The ground contact surface 1a of the sheet holding member 10 has
Since the long projections 3 are provided, the pressing force by tightening the nut 8b is limited to the top of the long projections 3.
It acts on the surface of the sheet material 7 via 3a.

Therefore, even with the same number of support members and the same number of support members as in the prior art, the pressing force acting on the sheet member 7 is stronger than that of the conventional sheet press member having a flat grounding surface. (Since the contact area with the sheet material is smaller than before,
The pressing force per unit area of the sheet material increases).

Further, the elongated projections 3 and 3 are
Are protruded along the longitudinal direction of the support member 8, so that the pressing force of the support member 8 also acts on the sheet member 7 between the support member 8 and the support member 8, but the sheet pressing member 10 according to the present invention Since the pressing force acting on the sheet member 7 is stronger than that of the conventional one, the pressing force on the sheet member 7 between the support members 8 necessarily becomes stronger than that of the conventional sheet pressing member. . Therefore,
Compared to the case where a conventional sheet pressing member is used, peeling between the support members 8 is less likely to occur.

In the present embodiment, the support 8 comprises an anchor 8a and a nut 8b, but the support 8 is not necessarily limited to the anchor 8a and the nut 8b.
For example, a headed screw or the like may be used. The point is that the supporting member 8 can be fixed to the structure 6 and can press the sheet pressing member 10 toward the sheet member 7.

<Second Embodiment> In FIG. 4, reference numeral 21 denotes a pressing member main body made of a band-like body having a flat surface 21a side (ground contact surface 21a side). On the surface 21b side (the non-grounding surface 21b side), a plurality of concave portions 24 and convex portions 25 are alternately formed in the longitudinal direction. The concave portion 24 has a substantially flat side surface, and the convex portion 25 is formed in a substantially circular arc shape so as to gradually protrude from the concave portion 24. In addition, the convex portion 25 is not necessarily limited to an arc shape, and may be, for example, a substantially triangular side surface.

At substantially the center of the recess 24, an insertion hole 26 is formed. It is preferable that the insertion hole 26 is an elongated hole along the longitudinal direction of the pressing member main body 1. still,
If the insertion hole 26 is a sheet holding member 20 formed in advance, it is necessary to form a hole for inserting the support member 8 when the sheet holding member 20 is fixed to the sheet member 7 as described later. Although not preferable, the insertion hole 26 does not have to be formed in the holding member body 21 in advance.

The sheet pressing member 20 will be described in more detail. The pressing member main body 21 has a length L of 2000 m, for example.
m, the width W is 35 mm, the interval M between the insertion holes 5 is 195 mm,
The size of the insertion hole 26 is 16 mm × 8 mm, the height H1 from the contact surface 21a to the concave portion 24 is 10 mm, and the height H1 from the contact surface 21a is
The height H2 up to the top 25a of 5 is formed to be 30 mm. Needless to say, the sheet pressing member 20 is not limited to such dimensions.

A method for preventing sheet peeling and a structure for preventing sheet peeling using the sheet pressing member 20 having the above configuration will be described below. As shown in FIG. 5, the ground surface of the sheet pressing member 20 is placed on the peripheral portion of the sheet member 7 attached to the surface of the structure 6 such as the roof of a building via an adhesive such as a room temperature curable resin.
Place the 21a side.

Next, the anchor 8a of the support member 8 including the anchor 8a and the nut 8b screwed to the anchor 8a is inserted into the insertion hole 26 of the concave portion 24 at both ends of the sheet pressing member 20, and the structure is changed. It is fixed to the object 6 (shown in FIG. 7A).

After the anchors 8a constituting the support members 8 are fixed to the structure 6 at a predetermined interval in advance, the insertion holes 26 of the sheet pressing member 20 are inserted through the anchors 8a. The sheet pressing member 20 may be placed on the surface of the structure 6. At the time of insertion into the anchor 8a, since the insertion hole 26 is a long hole, there is an advantage that the alignment can be easily performed.

The washer 11 is inserted into the projected portion of each fixed anchor 8a. Next, the nut 8b is screwed into the protruding portion of the anchor 8a at both ends and tightened.
A pressing member 27 (for example, a metal wire (a metal steel wire or a thin strip-shaped metal plate is exemplified)) or a resin wire (a string made of aramid fiber or carbon) A string-like body made of fiber is exemplified), etc.), and the nut 8b is tightened in a locked state. As means for locking the pressing member 27 to the nut 8b, means for directly clamping the pressing member 27 between the lower surface of the nut 8b and the upper surface of the washer 11, a ring-shaped member is inserted through the protrusion of the anchor 8a, and Means for locking the pressing member to the ring-shaped member and holding the ring-shaped member between the lower surface of the nut 8b and the upper surface of the washer 11 may be used.

As described above, the pressing members 27 are attached to the support members 8 at both ends.
By tightening, the pressing member 27 is erected on the projecting portions of the two support members 8 in a tensioned state (shown in FIG. 2A).

Next, the anchor 8a is inserted into the insertion hole 26 of the other concave portion 24.
And fixed to the structure 6. When the anchor 8a (support 8) is fixed to the structure 6 at a predetermined interval in advance, the above operation is unnecessary.

The anchor 8a protruding from the other concave portion 24
The pressing member 27 is further tightened by locking the already mounted pressing member 27 with the nut 8b and tightening the nut 8b.

Accordingly, the pressing member 27 is provided with the convex portion 25 located between the adjacent concave portions 24 while being further applied with tension.
Then, the surface of the projection 25 is pressed by the tension (shown in FIG. 2B). Similarly, the pressing member 27 is locked in a tensioned state by the nut 8b on the protrusion of the anchor 8a protruding from all the other recesses 24.

According to the above-described method, the pressing member 27 can be tensioned at the same time as the nut 8b is tightened.
Can be pressed, so that the construction work is simple.

As shown in FIG. 6, the sheet material 7 adhered to the structure 6 is in contact with the grounding surface 21a on the surface of the sheet material 7, and the concave portion 24 is formed on the non-adhering surface 21b side. And convex part 25
Are alternately formed in the longitudinal direction, the support member 8 is inserted through the concave portion 25 of the sheet press member 20, and is fixed to the structure 6, and the projecting portion of the support member 8 is in tension. , And a pressing member 27 for pressing the surface of the convex portion 24 of the sheet pressing member 20 to form a sheet peeling prevention structure.

According to this sheet peeling prevention structure, the periphery of the concave portion 24 of the sheet holding member 20 to which the support member 8 is fixed is tightened by the nut 8b of the support member 8 to secure the sheet holding member 20.
Presses the surface of the sheet material 7.

On the other hand, between the support members 8 (the concave portions 24)
The protrusion 25 of the sheet pressing member 20 is pressed by the tension of the pressing member 27 between the contact member 27 and the recess 24, that is, around the protrusion 25. Press the surface of. That is, the support member 8 from which the sheet material 7 is easily peeled off
Since the pressing force of the supporting member 8 acts between the supporting member 8 and the supporting member 8 via the pressing member 27, the peeling of the sheet material 7 hardly occurs.

In particular, since the convex portion 25 of the sheet pressing member 20 is formed in an arc shape and the pressing member 27 is bendable, FIG.
As shown in the figure, the pressing member 27 is curved and abutted along the surface of the convex portion 25, and the pressing force of the pressing member is easily concentrated on the central portion of the convex portion 25 (indicated by an arrow in the figure). This is preferable because it acts on the central portion between the support members 8 where the pressing force is least likely to act.

The sheet holding member 20 according to the present embodiment is
The grounding surface 21a side of the holding member main body 21 is formed flat. For example, the sheet holding member 10 of the first embodiment is used.
As shown in FIG. 8, two long protrusions 28, 28 having an arc-shaped cross section may be provided side by side on the grounding surface 21a of the pressing member body 21 (see FIG. 8).

With the sheet peeling prevention structure using the sheet pressing member 20 in which the elongated projections 28, 28 are arranged side by side, not only the advantages of the above-described pressing member 27 but also the advantages of the elongated projections 28, 28,
That is, it has an advantage that the pressing force per unit area of the sheet material 7 increases, and is extremely effective in preventing the sheet from being peeled. Further, the elongated projections 28 are not necessarily limited to those having a cross section formed in an arc shape, and may have, for example, a polygonal shape such as a substantially triangular shape or a substantially square shape.

[0054]

As described above, according to the sheet holding member according to the present invention, the same number of supports and the pressing force of the supporting members as in the case where the conventional sheet pressing member is used are used, so that the distance between the supporting members which has conventionally been easily peeled off is reduced. Has an effect that the sheet material can be strongly pressed, and therefore, the sheet material hardly peels off. In particular, since the pressing member presses the convex portion between the supports to the sheet material side, it is possible to prevent the sheet from being peeled even if the number of the supports is smaller than in the related art.

Further, in the sheet peeling prevention structure using such a sheet pressing member, since the convex portion of the sheet pressing member is pressed toward the sheet member by the pressing member, the sheet hardly peels.

Further, in the sheet peeling prevention method using the sheet pressing member, the pressing member can be tensioned simultaneously with the tightening of the support, so that the operation is simple, that is, the operation is almost different from the conventional one. This has the effect that the sheet peeling prevention structure can be constructed without the need.

[Brief description of the drawings]

FIG. 1 shows a sheet pressing member according to a first embodiment of the present invention, wherein (A) is a partially omitted plan view, (B) is a partially omitted bottom view, and (C) is AA of (A). Line sectional view.

FIG. 2 is a partially omitted perspective view showing a sheet pressing member according to the first embodiment of the present invention.

FIG. 3 is a partially omitted perspective view including a cross section showing a sheet peeling prevention structure using a sheet pressing member according to the first embodiment of the present invention.

FIGS. 4A and 4B show a sheet pressing member according to a second embodiment of the present invention, wherein FIG. 4A is a partially omitted bottom view, FIG. 4B is a partially omitted side view, and FIG. Line sectional view.

FIG. 5 shows a procedure of a sheet peeling prevention method using a sheet pressing member according to a second embodiment of the present invention, and FIG. 5 (a) is a partially omitted cross-sectional view showing a state where a pressing member is erected on supports at both ends. FIG. 2B is a partially omitted cross-sectional view showing a state in which the pressing members are locked to all the support tools.

FIG. 6 is a partially omitted perspective view including a cross section showing a sheet peeling prevention structure according to a second embodiment of the present invention.

FIG. 7 is a partially omitted side view showing a sheet peeling prevention structure according to a second embodiment of the present invention, and the action of a pressing force is indicated by an arrow.

FIG. 8 is a partially omitted perspective view including a cross section showing another embodiment of a sheet pressing member and a sheet separation preventing structure according to the present invention.

FIG. 9 is a partially omitted perspective view including a cross section showing a sheet peeling prevention structure using a conventional sheet pressing member.

[Explanation of symbols]

1,21: Holder body, 1a, 21a: Grounding surface, 1b, 21b: Non-grounding surface, 3,28: Elongated protrusion, 5,26: Insertion hole, 6: Structure, 7 ...
Sheet material, 8: support, 10, 20: sheet presser, 24: concave, 25: convex, 27: pressing member

Claims (6)

(57) [Claims] 1. A sheet pressing member for preventing a sheet member (7) adhered to a structure (6) from peeling off, wherein a longitudinal side is provided on a non-grounding surface (21b) side of a pressing member body (21). Recess in direction (24)
And a convex portion (25) are formed alternately, and a pressing member (27) for pressing at least the convex portion (25) is provided. 2. The sheet according to claim 1, wherein two elongated projections (28), (28) are juxtaposed in the longitudinal direction on the grounding surface (21a) side of the pressing member main body (21). Holding material. 3. A sheet material (7) attached to a structure (6), a grounding surface (21a) is in contact with the sheet material (7), and a concave portion (24) is provided on a non-adhering surface (21b) side. ) And a sheet presser (20) in which protrusions (25) are alternately formed in the longitudinal direction;
A supporting member (8) inserted into the recess (24) of the (20) and fixed to the structure (6); And a pressing member (27) for pressing the convex portion (25) of (1). 4. On the ground contact surface (21a) side of the sheet pressing member (20), two elongated projections (28), (28) are juxtaposed in the longitudinal direction, and the elongated projections (28) are provided. The top (28a) of the sheet material (7)
The sheet peeling prevention structure according to claim 3, which is in contact with the sheet. 5. A sheet separation preventing method for preventing separation of a sheet material (7) attached to a structure (6),
The ground surface (21a) of the sheet pressing member (20) in which the concave portion (24) and the convex portion (25) are alternately formed in the longitudinal direction on the non-ground surface (21b) side.
Side is placed on the sheet material (7), and the sheet pressing material (20)
A support member (8) is fixed to the structure (6) at both ends of the support member (8), and a bendable pressing member (2)
7), the support (8) fixed to the structure is projected from the concave portion (24) of the sheet pressing member (20), and the pressing member (27) is inserted into the projecting portion of the support (8). Wherein the pressing member (27) presses the convex portion (25) of the sheet pressing member (20). 6. The sheet holding member (20) has two elongated projections (28), (28) juxtaposed in the longitudinal direction on the ground contact surface (21a) side. Item 6. The sheet peeling prevention method according to Item 5.