JP2015135039A - Cover structure, falling prevention ability confirmation tool, falling prevention ability confirmation method and cover material falling prevention method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technology capable of confirming falling prevention ability for cover structure (particularly, falling prevention tool) during and after construction.SOLUTION: A cover structure comprises: a structure 1, cover mortar 4, stainless wire net 2, attaching mechanism 3, 5, 6, 8, and a falling prevention ability confirmation tool 7. The falling prevention ability confirmation tool 7 is consisting of first connecting parts 10, 12 connecting the attaching mechanism, second connecting parts 11, 13 connecting a falling prevention ability confirmation test machine 26, and a third connecting part 14 connecting the first connecting part with the second connecting part. When the falling prevention ability confirmation test machine 26 is pulled to a predetermined load, a tapping screw is subjected to tensile force via the falling prevention ability confirmation tool 7. By virtue of the falling prevention ability confirmation tool 7, falling prevention ability is confirmed before and after covering.

Description

  The present invention relates to a covering structure in which a structure such as a tunnel is covered with a covering material. In particular, the present invention relates to a technique for confirming the ability to prevent peeling of a covering structure.

  Improve or improve the performance of fire resistance, heat insulation, sound insulation, etc. on the surface of buildings, detached houses, tunnels and other structures constructed using metals (steel, cast iron, etc.), concrete or wood. For this reason, coating with a coating mortar is performed. In addition, the coating is expected to have a cosmetic effect.

  By the way, in order to prevent the covering mortar from being peeled off, a mounting mechanism such as a bolt, a nut, a nail, a tapping screw or a wooden screw, an anchor, or the like is used to attach a peeling prevention tool for covering mortar such as a metal mesh. (For example, Patent Documents 1 and 2).

  Furthermore, there is a preliminary construction method and a method for evaluating the anti-peeling property to confirm whether the covering material (covering mortar) attached to the inner wall of the simulated tunnel using a stainless steel mesh (covering mortar anti-peeling tool) does not peel off due to dynamic wind pressure generated by the vehicle There is (for example, Patent Document 3).

  The preliminary construction method and the peeling prevention characteristic evaluation method of Patent Document 3 are excellent for confirming in advance whether the structure has sufficient peeling prevention characteristics. However, it was not possible to confirm whether the actually applied anti-peeling tool for coated mortar was securely attached to the surface of the structure, and the anti-separation performance was sufficiently provided at the attached location.

JP 2003-206694 A JP 2012-132191 A JP 2011-033417 A

  The peeling prevention tool for covering mortar is embedded in the covering material. Therefore, in the prior art, the anti-peeling performance could not be confirmed in detail against aging. In particular, even when aged deterioration occurs, it may be determined that there is no abnormality visually, and as a result, an unexpected situation may occur. Therefore, there is a demand for a technology that can confirm the peeling prevention performance not only at the time of construction but also after construction.

  This invention solves the said subject, and it aims at providing the peeling prevention performance confirmation technique which can confirm the peeling prevention performance of a coating structure (especially peeling prevention tool) at the time of construction and after construction.

  The covering structure which is one embodiment of the present invention that solves the above problems includes a structure, a covering material that covers the structure, a peeling preventer that prevents the covering material from peeling off from the structure, and the peeling An attachment mechanism for attaching the prevention tool to the structure, and a peeling prevention performance confirmation tool for confirming the peeling prevention performance of the peeling prevention tool, wherein the peeling prevention performance confirmation tool is a first for connecting the attachment mechanism. It has a connection part, the 2nd connection part which connects a peeling prevention performance confirmation tester, and the 3rd connection part which connects the 1st connection part and the 2nd connection part.

  Preferably, in the above invention, the second connecting portion is exposed from the covering material.

  When the peeling prevention performance confirmation tester is connected and pulled to a predetermined load, the tensile force acts on the attachment mechanism via the separation prevention performance confirmation tool. Thereby, peeling prevention performance can be checked.

  Preferably, in the above invention, a covering material fall prevention means formed by being connected to the plurality of second connecting portions is further provided.

  A fail-safe function can be easily added without adding a new configuration. As a result, even if safety measures such as a peeling prevention tool or a performance confirmation test do not function, a serious accident can be prevented.

  The covering material peeling prevention tool which is one aspect of the present invention that solves the above problems includes a first connecting portion that connects a mounting mechanism of the peeling prevention device that prevents the coating material from peeling from the structure, and a peeling prevention performance confirmation test. A second connecting part for connecting the machine, and a third connecting part for connecting the first connecting part and the second connecting part.

  The covering structure which is one embodiment of the present invention that solves the above problems includes a structure, a covering material that covers the structure, a peeling preventer that prevents the covering material from peeling off from the structure, and the peeling An attachment mechanism for attaching the prevention tool to the structure, a first connection part for connecting the attachment mechanism, a second connection part for connecting an external member outside the covering material, the first connection part and the second A connecting tool having a third connecting part for connecting the connecting part and a covering material fall prevention means formed by being connected to the plurality of second connecting parts.

  One aspect of the present invention that solves the above problems includes a first connecting part that connects a mounting mechanism of a peeling prevention tool, a second connecting part that connects a peeling prevention performance confirmation tester, the first connecting part, and the first connecting part. A stripping prevention performance confirmation method using a stripping prevention performance confirmation tool comprising a third coupling portion that couples two coupling portions, wherein the first coupling portion is coupled to the mounting mechanism, and the second coupling portion is Connected to the peeling prevention performance confirmation tester, confirmed the peeling prevention performance before coating by the peeling prevention performance confirmation testing machine, and released the connection between the second connecting portion and the peeling prevention performance confirmation testing machine. Then, the second connecting portion is connected again to the peeling prevention performance confirmation testing machine, and the peeling prevention performance after coating is confirmed by the peeling prevention performance confirmation testing machine.

  One aspect of the present invention that solves the above problems includes a first connecting part that connects a mounting mechanism of a peeling prevention tool, a second connecting part that connects a peeling prevention performance confirmation tester, the first connecting part, and the first connecting part. A stripping prevention performance confirmation method using a stripping prevention performance confirmation tool comprising a third coupling portion that couples two coupling portions, wherein the first coupling portion is coupled to the attachment mechanism, and the covering material is provided. Before, the said 2nd connection part is connected with a peeling prevention performance confirmation tester, and a peeling prevention performance is confirmed with the said peeling prevention performance confirmation tester.

  One aspect of the present invention that solves the above problems includes a first connecting part that connects a mounting mechanism of a peeling prevention tool, a second connecting part that connects a peeling prevention performance confirmation tester, the first connecting part, and the first connecting part. A stripping prevention performance confirmation method using a stripping prevention performance confirmation tool comprising a third coupling portion that couples two coupling portions, wherein the first coupling portion is coupled to the attachment mechanism, and a covering material is provided, A 2nd connection part is connected with a peeling prevention performance confirmation test machine, and a peeling prevention performance is confirmed with the said peeling prevention performance confirmation tester.

  The peeling prevention performance confirmation tool can confirm the peeling prevention performance before and after coating.

  Preferably, in the above invention, after the coating, after confirming the peeling prevention performance, the coating material falling prevention means is formed by connecting to the plurality of second connecting portions.

  One aspect of the present invention that solves the above-described problem is a covering material fall prevention method, which is a first connection part that connects an attachment mechanism of a peeling prevention tool, a second connection part that connects to the outside, and the first connection. And connecting the first connecting part to the attachment mechanism via a connecting tool comprising a third connecting part for connecting a part and the second connecting part, and attaching the anti-strip tool to the structure. Are provided and connected to the plurality of second connecting portions to form a covering material fall prevention means.

  According to the present invention, the peeling prevention performance of the covering structure (particularly the peeling prevention tool) can be confirmed during and after the construction.

  According to the present invention, a fail-safe function can be easily added.

Covering construction procedure Schematic perspective view of stainless steel wire mesh Schematic perspective view of a tool for confirming peeling prevention performance (first embodiment) Peeling prevention performance confirmation tester Separation prevention performance confirmation tool (second embodiment) Cover structure and peeling prevention performance confirmation tool (third embodiment) Cover structure and peeling prevention performance confirmation tool (fourth embodiment) Addition of covering material fall prevention material (corresponding to the first embodiment) Tunnel ceiling bottom view Addition of covering material fall prevention material (modified example corresponding to the first embodiment) Addition of covering material fall prevention material (corresponding to the third embodiment) Addition of covering material fall prevention material (corresponding to the fourth embodiment)

<First Embodiment>
~Constitution~
FIG. 1 is a diagram showing a construction procedure of a covering structure according to this embodiment. FIG. 1D shows the structure of the covering structure.

  The covering structure includes a structure 1, a covering mortar 4, a stainless steel wire mesh (a covering prevention tool for covering mortar) 2, attachment mechanisms 3, 5, 6, and 8, and a peeling prevention performance confirmation tool 7.

  The iron structure 1 is an example of a structure. As a structure in the present invention, a structure made of steel (particularly ordinary steel) or cast iron (iron structure), a concrete structure, a wooden structure, and steel, cast iron, concrete, wood, stone, resin, etc. are combined. More specifically, for example, ordinary steel segments, cast iron segments, synthetic segments made of steel and concrete, synthetic segments made of cast iron and concrete, and one or two of these Shield tunnel consisting of more than species segments, mountain tunnel made of concrete and steel, steel tank, reinforced concrete tank, steel pier, steel viaduct, reinforced concrete viaduct, steel pipe, steel frame, steel plate or steel pipe filled concrete Buildings with walls, roofs, columns, beams or floors, steel shells filled with concrete Buried tunnel, wooden house, steel-made housing include concrete houses like.

  The covering mortar 4 is an example of a covering material. The coating mortar in the present invention is not particularly limited as long as it covers the surface 9 of the structure, and may be any of cement mortar, polymer mortar, or polymer cement mortar. For example, chemical resistance such as fireproof coating mortar and acid resistant mortar. Mortar, finish mortar, heat insulating mortar, cross-section repair mortar and the like. Moreover, coating materials other than mortar are also included.

  The stainless steel wire mesh 2 is an example of a peeling prevention tool. As a peeling prevention tool in the present invention, one or two or more selected from metals, ceramics, resins, glasses, and carbons are used as a main material. Specifically, it is a material that hardly corrodes or rusts such as stainless steel, rust-prevented metal, resin, alkali-resistant glass, and carbon. From the viewpoint of fire resistance, nonflammable or flame retardant materials are preferred. For these reasons, stainless steel, rust-proof metal, ceramic, alkali-resistant glass, and the like are particularly preferable. Of these, stainless steel is preferable.

  The shape of the peeling prevention tool may be any selected from a net shape, a rod shape, a linear shape, or a perforated sheet shape. Since the filling mortar is unlikely to be filled poorly, the shape of the peeling prevention tool is preferably a net shape, a rod shape, or a linear shape. In particular, when the coating mortar is arranged on the surface of the structure by the spraying method, for the same reason, the shape of the peeling prevention tool is preferably a net-like, rod-like or linear one. When the net is rod-shaped or linear, it is more preferable that the distance between adjacent bars or lines is 20 mm or more.

  In FIG. 2, the schematic perspective view of the stainless steel metal mesh 2 is shown. The stainless steel wire mesh 2 includes a concave portion 21 and a flat portion 22 and is embedded in the covering mortar 4. The recess 21 has a groove shape. The concave portion 21 contacts the structure surface 9 and is attached by a mounting mechanism at a position where it comes into contact with the structure surface 9. The flat portion 22 occupies a large portion of the stainless steel wire mesh 2 and is embedded in the coating mortar at a position separated from the structure surface 9.

  An example of the attachment mechanisms 3, 5, 6, and 8 will be described with reference to FIGS. 1 (b) and 1 (c). The steel structure 1 is provided with a non-penetrating pilot hole 3 for screwing the tapping screw 5. On the other hand, a metal mesh mounting portion 8 is provided in the recess 21 of the stainless steel metal mesh 2. The wire mesh attachment portion 8 is configured by a predetermined portion of the two wire rods of the recess 21. The tapping screw 5 is screwed into the prepared hole 3 so that the wire mesh attaching portion 8 (two wires) and the flat washer 6 are inserted. Thereby, the attachment mechanism attaches the stainless steel wire mesh 2 to the structure 1.

  The attachment mechanism in this invention will not be specifically limited if the peeling prevention tool for covering mortar can be attached to the structure surface. For example, anchor bolts, pipe bolts, hook-shaped fittings, nails, screws such as tapping screws and wood screws, bolts, rivets, insert nuts, nuts, wires, wires, and the like can be given. Examples of the material include metal, ceramic, resin, glass, and wood. Two or more types and materials may be combined. As a method of attaching to the structure, screwing, fitting, fastening, embedding, locking, adhesion, pressure bonding, welding, welding, nailing, or stapling can be appropriately employed.

  In FIG. 3, the schematic perspective view of the peeling prevention performance confirmation tool 7 is shown. The peeling prevention performance confirmation tool 7 includes first connection portions 10 and 12, second connection portions 11 and 13, and a third connection portion 14.

  The first connecting portions 10 and 12 are flat plates 10 having holes 12. When the tapping screw 5 is inserted through the hole 12 and the flat plate 10 is inserted, the first connecting portions 10 and 12 connect the attachment mechanism.

  The second connecting portions 11 and 13 are flat plates 11 having holes 13. When the jig of the peeling prevention performance confirmation tester 26 is locked in the hole 13, the second connecting portions 11 and 13 connect the peeling prevention performance confirmation tester 26.

  The third connection part connects the first connection part and the second connection part. The flat plates 10 and 11 are obtained by bending a single flat plate at 90 degrees, and the bent portion 14 constitutes a third connecting portion. The flat plates 10 and 11 may be welded. The welding part 14 comprises a 3rd connection part.

  The 1st connection part and the 2nd connection part may be directly connected like illustration, and may be connected via other members.

  The 1st connection part of this invention will not be specifically limited if an attachment mechanism can be connected. For example, it is preferably a perforated, annular, tubular, hook-shaped, U-shaped or L-shaped wire, plate or block material, or a screw. It is easily fixed to the structure surface 9 via an attachment mechanism.

  The 2nd connection part of this invention will not be specifically limited if the peeling prevention performance confirmation tester 26 can be connected. For example, it is preferably a perforated, annular, tubular, hook-shaped, U-shaped or L-shaped wire, plate or block material, or a screw.

  The main part of the peeling prevention performance confirmation tool 7 is embedded in the coating mortar 4, but the second connecting portion (hole 13) is exposed from the coating mortar 4.

  FIG. 4 shows an example of a peeling prevention performance confirmation tester. The peeling prevention performance confirmation tester is, for example, a tensile tester 26, which is a push-pull gauge that is one of the tensile testers. The push-pull gauge 26 is a digital type, and includes a body part 27 and a head part 23, and a measuring shaft 31 is provided at the tip of the head part 23. The tip of the measuring shaft 31 is a male screw and is connected to a load cell inside the push-pull gauge 26. The head 23 is provided with a display 28, and buttons are provided in the vicinity of the connecting portion between the head 23 and the trunk portion 27. An attachment (jig) 29 is screwed onto the measurement shaft 31. The attachment 29 is formed by connecting a hook portion 30 and a female screw.

  The tensile tester used in the present invention is capable of pulling the drop prevention performance confirmation tool (second connecting part) with a load greater than the load to be borne by the mounting mechanism and measuring the stress at that time. It can use without being specifically limited. For example, a load cell combined with a data converter such as a push-pull gauge (force gauge) or a data logger, a hanging scale, or the like can be used. Preferably, a push-pull gauge (force gauge) is preferable because data can be easily recorded and carried easily. Examples of such push-pull gauges (force gauges) include the digital push-pull gauge MODEL-RX series manufactured by Aiko Engineering Co., Ltd., the digital force gauge DS2 series manufactured by Imada Co., the ZTS series, the ZTA series, and the company special Digital Force Gauge Sensor Separate Type ZTS / ZTA Series, Company Mechanical Force Gauge FB / FS Series, PS / PSS Series, PSM Series, UKK / UKT Series, Force Gauge FG-5000 Series by Sato Corporation, Japan Measuring System Handy Digital Force Gauge HF Series, Handy Analog Force Gauge AN Series, Digital Force Gauge FGP Series, FGPPX Series, F JN series, the company analog force gauge MF series, there are A & D Company, Ltd. force gauge AD-4932A series, etc., it can also be used these equivalent.

-Construction procedure-
Returning to FIG. 1, the construction procedure of the covering structure will be described.

  A pilot hole 3 is provided in the structure 1 (FIG. 1A).

  The peeling prevention performance confirmation tool 7 is arranged at a predetermined position. Further, the attachment mechanisms 5, 6, 8 are arranged at predetermined positions. At this time, the positions of the pilot hole 3, the hole 12, the flat washer 6, and the wire mesh attaching portion 8 are made to coincide (FIG. 1B).

  The tapping screw 5 is screwed into the pilot hole 3 and the stainless steel wire mesh 2 is attached to the structure surface 9. At the same time, the peeling prevention performance confirmation tool 7 is also attached. That is, the 1st connection parts 10 and 12 and the attachment mechanisms 3, 5, 6, and 8 are connected (FIG.1 (c)).

  Furthermore, a coating mortar 4 having a predetermined thickness is coated. At this time, the holes 13 are exposed from the covering mortar 4 (FIG. 1D).

~Test method~
An example of the test method will be described. Using a tensile tester, pull the load with a load greater than the load that the mounting mechanism should bear, and check that the mounting mechanisms 3, 5, 6, and 8 do not fall out, slip, break, or yield.

  After hooking the hook portion 30 of the attachment attached to the push-pull gauge 26 in the hole 13 of the connecting portion 11 of the anti-peeling performance check tool 7, the push-pull gauge body portion 27 is grasped by hand, and the iron structure surface 9 or A push-pull gauge is pulled substantially perpendicularly to the mortar surface 20 until a load equal to or greater than the load that the tapping screw 5 should bear. The tensile force acts on the tapping screw 5 via the peeling prevention performance confirmation tool 7. Further, the displacement meter 21 may be applied to the tip of the peeling prevention performance confirmation tool 7 to measure and grasp the movement (displacement) of the fall prevention performance confirmation tool.

  As the confirmation of the peeling prevention performance of the present invention, the movement (displacement) of the drop prevention performance confirmation tool is grasped by a displacement meter, a micrometer, a caliper, etc., a confirmation method, a method of visually confirming, a fall prevention performance by a small hammer, etc. A preferable method is a method in which a confirmation tool is struck and confirmed by a sound at that time (sounding test). When grasping the movement (displacement) of the drop prevention performance confirmation tool with a displacement meter or the like, it is more preferable to grasp the distance from the structure or the covering mortar directly or indirectly. Moreover, when confirming visually, it is more preferable to mark the boundary between the drop prevention performance confirmation tool and the coating mortar, and to confirm whether or not the mark is separated from the boundary with the coating mortar.

  The load greater than or equal to the load to be borne by the attachment mechanism is a load having a value obtained by multiplying the load to be borne by the attachment mechanism by the safety factor. Here, the load to be borne by the mounting mechanism is a load applied to the mounting mechanism when the covering mortar and the structure have no adhesion at the interface, that is, when the covering mortar is peeled off from the surface of the structure. Load. When the covering mortar is provided on the lower surface of the horizontal structure surface, the weight of the covering mortar having an area borne by the attachment mechanism can be regarded as a load to be borne by the attachment mechanism. At this time, the weight that includes the weight of the attachment mechanism added to the coating mortar, the anti-peeling device for covering mortar, and the anti-peeling performance confirmation tool is the load that the mounting mechanism should bear, but when these proportions are small May ignore these weights and consider only the coated mortar as the load that the mounting mechanism should bear. Further, when a negative pressure is applied to the surface of the coated mortar by wind or the like, the load that the mounting mechanism should bear is set in consideration of the negative pressure. Similarly to the weight of the attachment mechanism and the like, when the ratio of the negative pressure to the weight of the covering mortar is small, the negative pressure may be ignored and only the weight of the covering mortar may be regarded as a load that the attachment mechanism should bear.

  The present embodiment is characterized in that peeling prevention performance can be confirmed during construction (before coating) and after construction (after coating).

  By confirming at the time of construction (before coating) (Fig. 1 (c)), it is possible to find a mounting mechanism that has a problem in mounting the coating prevention device for coating mortar on the structure surface. It can be repaired.

  By confirming after construction (after coating) (FIG. 1 (d)), it can be confirmed that the coating mortar does not peel off. Moreover, if the peeling prevention performance confirmation method of this invention is performed regularly, it can confirm that there is no aged deterioration.

  If any missing, slipped, broken or yielding of the mounting mechanism is confirmed, it can be repaired immediately by replacing the mounting mechanism.

  Thereby, an unexpected situation can be prevented in advance.

Second Embodiment
FIG. 5 shows a second embodiment of the peeling prevention performance confirmation tool. 5, (a) is a front view, (b) is a left side view, (c) is a plan view, (d) is a right side view, (e) is a rear view, and (f) is a bottom view.

  The peeling prevention performance confirmation tool 7A shown in FIG. 5 is made of stainless steel, and includes a first connecting portion made of a flat plate 16 having holes 24, a second connecting portion made of a semi-annular flat plate 17, and a flat plate 18 having no holes. A third connecting portion and two projecting portions 15 and 19. The angle formed by the flat plate 16 and the flat plate 18 is a right angle. The semi-annular flat plate 17 and the flat plate 18 are coplanar.

  The protrusions 15 and 19 are provided so as to protrude parallel to the flat plate 16 at a right angle to the flat plate 18.

  One protrusion 15 is bent at a right angle from the flat plate 18 to the plane side (front side), and the other protrusion 19 is formed at a right angle from the flat plate 18 to the back side (rear side). ing.

  The peeling prevention performance confirmation tool 7A is formed by punching a stainless steel flat plate into a necessary shape, forming a circular hole 24 and a semicircular hole 25, and then bending the plate to form flat plates 16, 18 and protrusions 15, 19.

  The second embodiment has the same configuration as that of the first embodiment, and the same effect can be obtained.

  Moreover, when the peeling prevention performance confirmation tool 7A is attached to the structure surface 9, the covering mortar is more difficult to peel off due to the provision of the protrusions 15 and 19. Even when the coating mortar is peeled off from the surface of the structure, the coating mortar is not peeled off by being caught on the protrusion.

<Third Embodiment>
In the first embodiment and the second embodiment, the second connecting portion protrudes from the coated mortar surface 20 and is exposed, whereas in the third embodiment, the second connecting portion faces the coated mortar surface 20. It is exposed at one position.

  FIG. 6 shows a third embodiment of a covering structure and a peeling prevention performance confirmation tool.

  The peeling prevention performance check tool 7B shown in FIG. The first connecting portion which is a boundary 71 with the mounting tool 5, the second connecting portion including the female screw 72, and the third connecting portion including the columnar body 73.

  A protective cap 74 is provided at the opening of the female screw 72.

  The female screw 72 is screwed with a male screw provided at the tip of the measuring shaft 31 of the peeling prevention performance confirmation tester 26.

  The third embodiment has the same configuration as that of the first embodiment, and the same effect can be obtained.

  Furthermore, since the female screw 72 opening is flush with the coated mortar surface 20, the cosmetic properties are not impaired.

<Fourth embodiment>
In the third embodiment, the second connecting portion is exposed at the same position as the surface of the coated mortar 20, whereas in the fourth embodiment, the coated mortar surface 20 is provided with a notch, and the second The connecting part is exposed from the notch part.

  FIG. 7 shows a fourth embodiment of a covering structure and a peeling prevention performance confirmation tool.

  The surface 20 of the covering mortar 4 is provided with a notch. A protective cap 74 is provided in the notch opening.

  The peeling prevention performance confirmation tool 7 </ b> C shown in FIG. 7 is formed integrally with the fixture 5. The first connecting portion is a boundary 71 with the fixture 5, the second connecting portion is formed of a semi-annular flat plate 75, and the third connecting portion is formed of a cylindrical main body 73.

  The semi-annular flat plate 75 is engaged with the hook 30 of the peeling prevention performance confirmation tester 26.

  The fourth embodiment has the same configuration as that of the first embodiment, and the same effect can be obtained.

  Furthermore, since the semi-annular flat plate 75 is included in the notch and does not protrude from the coated mortar surface 20, the cosmetic properties are not impaired.

<Coating material fall prevention material>
~Overview~
In the first to fourth embodiments, the peeling prevention tool 2 is provided in the mortar, and the performance is confirmed before and after coating via the peeling prevention performance confirmation tool 7. In other words, double and triple safety measures are taken. However, the technical concept of fail-safe that assumes that a failure has occurred in these safety measures is important. That is, a problem that cannot actually occur is assumed.

  Although it is possible to prevent a fatal accident in which the entire covering material is peeled off by the peeling preventive tool 2, it is preferable to take into account the problem that the covering material at a position shallower than the position where the peeling preventing tool is installed is locally peeled off.

  Furthermore, it is preferable to consider a problem that the mounting portion 8 is damaged and one of the peeling prevention performance confirmation tools 7 falls out together with the surrounding mortar.

~Constitution~
FIG. 8 is obtained by adding a covering material fall prevention material 81 to the covering structure of the first embodiment (see FIG. 1). FIG. 9 is a bottom view of an example in which the covering material fall prevention material 81 is provided on the ceiling of the tunnel.

  The 2nd connection part 11 is exposed from a coating | covering material, and the hole 13 is provided in the exposed part. A plurality of peeling prevention performance confirmation tools 7 are provided at predetermined intervals. As a result, a plurality of holes 13 are exposed on the coating material surface 20.

  A wire 82 is inserted into the plurality of holes 13 to form a mesh shape. Thereby, the covering material fall prevention material 81 is formed so as to face the mortar surface 20. The covering material fall prevention material 81 functions as a protective net.

~ Operation ~
Even if the covering material on the mortar surface 20 is locally peeled off, the protective net 81 receives the peeling mortar. Thereby, it is possible to prevent a serious accident such as a mortar hitting a passing vehicle.

  Further, even if the mounting portion 8 is damaged and one of the peeling prevention performance confirmation tools 7 is dropped together with the surrounding mortar, a plurality of adjacent peeling prevention performance confirmation tools 7 are dropped via the wires 82. The peeling prevention performance confirmation tool 7 is supported. Thereby, it is possible to prevent a serious accident such that the anti-dropping performance checking tool 7 hits a passing vehicle.

  The visual inspection of the covering material is frequently performed. When the fall of the local peeling mortar or the peeling prevention performance confirmation tool 7 is confirmed, it may be repaired promptly.

  By the way, the connection of the covering material fall prevention material 81 has a simple configuration in which the wire 82 is simply inserted into the hole 13. Therefore, when confirming peeling prevention performance (refer 1st Embodiment), it can remove easily. Moreover, it can be installed easily after the confirmation test.

  Alternatively, by checking the peeling prevention performance in a state where the wire 82 does not contact the flange of the hole 13, that is, in a state where the wire 82 does not contact the second connecting portion 11, the coating material is dropped when the peeling prevention performance is confirmed. This can be confirmed without being affected by the load due to the prevention material 81.

~effect~
A fail-safe function can be easily added without adding a new configuration. As a result, even if safety measures such as a peeling prevention tool or a performance confirmation test do not function, a serious accident can be prevented.

~ Modification ~
Modification 1: FIG. 10 is obtained by adding a covering material fall prevention material 83 according to a modification to the covering structure of the first embodiment (see FIG. 1).

  In the first embodiment, a plurality of holes 13 are exposed on the coating material surface 20. A connection ring 84 is provided corresponding to each hole 13 of each peeling prevention performance confirmation tool 7. The connection ring 84 is further connected to a stainless steel wire mesh 85.

  Thereby, the stainless steel wire mesh 85 is suspended and supported by the peeling prevention performance confirmation tool 7 via the connection ring 84. That is, the connecting ring 84 and the stainless steel wire mesh 85 constitute the covering material fall prevention member 83 so as to face the mortar surface 20.

  The covering material fall prevention material 83 operates in the same manner as the covering material fall prevention material 81, and a similar effect is obtained.

  Modification 2: FIG. 11 is obtained by adding a covering material fall prevention material 91 according to a modification to the covering structure of the third embodiment (see FIG. 6).

  In the third embodiment, when the protective cap 74 is removed, the female screw 72 opening is exposed on the coating material surface 20. Corresponding to the female screw 72 of each peeling prevention performance confirmation tool 7B, the connecting bolt 92 is screwed. The head of the connecting bolt 92 is wider than a general bolt. The net 93 is locked to the head of the connecting bolt 92.

  Thereby, the net 93 is suspended and supported by the peeling prevention performance confirmation tool 7 </ b> B via the connecting bolt 92. That is, the connecting bolt 92 and the net 93 constitute the covering material fall prevention material 91 so as to face the mortar surface 20.

  Modification 3: FIG. 12 is obtained by adding a covering material fall prevention material 94 according to a modification to the covering structure of the fourth embodiment (see FIG. 7).

  In the fourth embodiment, when the protective cap 74 is removed, the semi-annular flat plate 75 is exposed in the notch opening. Corresponding to the semi-annular flat plate 75 of each peeling prevention performance confirmation tool 7C, the connecting hook 95 is locked. The connection hook 95 is further connected to a stainless steel wire mesh 96.

  Thus, the stainless steel metal mesh 96 is suspended and supported by the peeling prevention performance confirmation tool 7C via the connection hook 95. That is, the connecting hook 95 and the stainless steel wire mesh 96 constitute the covering material fall prevention member 94 so as to face the mortar surface 20.

  Others: In this embodiment, the covering material fall prevention material is considered to be a safety measure based on the peeling prevention performance confirmation test, but may not be based on the peeling prevention performance confirmation test. That is, the peeling prevention performance confirmation tool 7 is not used for performance confirmation, but is used as a connection tool between the covering material fall prevention material and the mounting portion 8.

  As mentioned above, although the modification of the coating | covering material fall prevention material was demonstrated, it is not limited to this.

  Examples of the covering material fall prevention material include a wire, a net, a plate, a cloth, and a sheet, and examples of the material include metal, ceramic, resin, glass, wood, animal fiber, and vegetable fiber. Two or more types and materials may be combined.

  As a method for attaching the covering material fall prevention material, screwing, fitting, fastening, locking, adhesion, pressure bonding, welding, welding, stapling, or insertion can be appropriately employed. The covering material fall prevention material may be directly attached to the peeling prevention performance confirmation tool, or may be attached using a connecting tool such as an eggplant or a ring.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a covering structure in which the surface of a structure made of concrete, metal, wood, stone, brick, or the like is covered with a covering mortar such as a fireproof covering mortar or an acid resistant mortar. Examples of the structure include a wooden house, a steel house, a concrete house, a tunnel, a tank, a water supply facility, a sewerage facility, a bridge pier, a viaduct, a reinforced concrete waterway, and the like.

1 Iron structure 2 Stainless steel wire mesh (Peeling prevention tool for coated mortar)
3 Pilot hole (non-through hole)
4 Lightweight coated mortar 5 Tapping screw (mounting mechanism)
6 Flat washer 7, 7A, 7B, 7C Peeling prevention performance confirmation tool 8 Metal mesh attachment part 9 Steel structure surface 10 Flat plate (first connecting part)
11 Flat plate (second connecting part)
12 holes (first connecting part)
13 holes (second connecting part)
14 3rd connection part 15 Protrusion part 16 Flat plate (1st connection part)
17 Semi-annular flat plate (second connecting part)
18 Holeless flat plate (3rd connecting part)
19 Protrusion part 20 Mortar surface 21 Concave part 22 Flat part 23 Head part 24 Hole (1st connection part)
25 Semicircular hole (second connecting part)
26 Push-pull gauge (tensile testing machine)
27 Body 28 Display 29 Attachment (Jig)
30 Hook part 31 Measuring shaft 71 Boundary (first connecting part)
72 Female screw (second connecting part)
73 Columnar body (third connecting part)
74 Protective cap 75 Semi-annular flat plate (second connecting part)
81 Cover material fall prevention material 82 Wire 83 Cover material fall prevention material 84 Connection ring 85 Stainless steel wire mesh 91 Cover material fall prevention material 92 Connection bolt 93 Net 94 Cover material fall prevention material 95 Connection hook 96 Stainless steel wire mesh

Claims (10)

A structure,
A covering material for covering the structure;
A peeling prevention tool for preventing the covering material from peeling off from the structure,
An attachment mechanism for attaching the anti-strip tool to the structure;
A peeling prevention performance confirmation tool for confirming the peeling prevention performance of the peeling prevention tool,
The peeling prevention performance confirmation tool is:
A first connecting portion for connecting the attachment mechanism;
A second connecting portion for connecting the anti-peeling performance confirmation tester;
A covering structure, comprising: a third connecting portion that connects the first connecting portion and the second connecting portion. The covering structure according to claim 1, wherein the second connecting portion is exposed from the covering material. A covering material fall prevention means formed by being connected to the plurality of second connecting portions is further provided.
The covering structure according to claim 1 or 2, characterized by the above-mentioned. A first connecting portion for connecting a mounting mechanism of a peeling prevention device for preventing the covering material from peeling off from the structure;
A second connecting portion for connecting the anti-peeling performance confirmation tester;
A stripping prevention performance confirmation tool for a dressing stripping prevention device, comprising: a third coupling portion that couples the first coupling portion and the second coupling portion. A structure,
A covering material for covering the structure;
A peeling prevention tool for preventing the covering material from peeling off from the structure,
An attachment mechanism for attaching the anti-strip tool to the structure;
A first connecting portion for connecting the attachment mechanism;
A second connecting part for connecting an external member outside the covering material;
A connection tool comprising: a third connection part that connects the first connection part and the second connection part;
A covering structure comprising: a covering material fall prevention means formed by being connected to a plurality of the second connecting portions. A first connecting part for connecting the mounting mechanism of the anti-peeling tool, a second connecting part for connecting an anti-peeling performance tester, and a third connecting part for connecting the first connecting part and the second connecting part. A peeling prevention performance confirmation method using a peeling prevention performance confirmation tool comprising:
Connecting the first connecting portion to the attachment mechanism;
Connect the second connecting part to a peeling prevention performance confirmation tester,
Check the anti-peeling performance before coating with the anti-peeling performance confirmation tester,
Release the connection between the second connecting part and the peeling prevention performance confirmation tester,
Provide a covering material,
Reconnect the second connecting part to the peeling prevention performance confirmation tester,
A method for confirming anti-peeling performance, comprising: confirming anti-peeling performance after coating by the anti-peeling performance confirmation tester. A first connecting part for connecting the mounting mechanism of the anti-peeling tool, a second connecting part for connecting an anti-peeling performance tester, and a third connecting part for connecting the first connecting part and the second connecting part. A peeling prevention performance confirmation method using a peeling prevention performance confirmation tool comprising:
Connecting the first connecting portion to the attachment mechanism;
Before the coating material is provided, connect the second connecting part to a peeling prevention performance confirmation tester,
A method for confirming anti-peeling performance, comprising: confirming anti-peeling performance using the anti-peeling performance confirmation tester. A first connecting part for connecting the mounting mechanism of the anti-peeling tool, a second connecting part for connecting an anti-peeling performance tester, and a third connecting part for connecting the first connecting part and the second connecting part. A peeling prevention performance confirmation method using a peeling prevention performance confirmation tool comprising:
Connecting the first connecting portion to the attachment mechanism;
Provide a covering material,
Connect the second connecting part to a peeling prevention performance confirmation tester,
A method for confirming anti-peeling performance, comprising: confirming anti-peeling performance using the anti-peeling performance confirmation tester. After confirming the peeling prevention performance by the peeling prevention performance confirmation method according to claim 6 or 8,
A covering material fall prevention method, wherein the covering material fall prevention means is formed by being connected to the plurality of second connecting portions. A connecting tool comprising: a first connecting part for connecting an attachment mechanism for a peeling prevention tool; a second connecting part for connecting to the outside; and a third connecting part for connecting the first connecting part and the second connecting part. Via, connecting the first connecting portion to the attachment mechanism, attaching the anti-strip tool to the structure,
Provide a covering material,
A covering material fall prevention method, wherein the covering material fall prevention means is formed by being connected to the plurality of second connecting portions.

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