JP7204352B2 - Fixation structure, fixation method, and fixation structure modification method - Google Patents

Description

The present invention relates to fixation structures, fixation methods, and methods of modifying fixation structures.

A post-installed anchor is generally used to fix an installation to a concrete floor surface. That is, by drilling holes in a concrete floor surface and embedding anchor bolts in the drilled holes, a support member for supporting an installed object is fixed to the floor surface.

JP 2006-118317 A

By the way, when using post-installed anchors, there is a risk of destruction of the concrete floor surface, risk of damage to the embedded objects (reinforcing bars and other embedded objects) embedded in the concrete floor surface, and the post-installed anchors due to the buried objects. There are issues such as restrictions on the hole position for the installation and noise and vibration during construction.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances. To provide a fixation structure, a fixation method, and a modification method of the fixation structure.

(1) A fixing structure according to one aspect of the present invention is a fixing structure for fixing an installation object to a floor surface made of concrete, comprising a support member that supports the installation object, the support member, and the floor surface. a plate disposed between, a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface, and a support member and the plate provided between, and a second adhesive that fixes the support member to the plate.

(2) In the fixing structure, the first adhesive and the second adhesive are of different types.

(3) In the fixing structure described above, the first adhesive is a thermosetting adhesive, and the second adhesive is a room temperature curing adhesive.

(4) In the above fixing structure, the first adhesive is an adhesive that is impregnable into concrete, and the second adhesive is not impregnable into concrete, or the first adhesive is It is an adhesive that impregnates less concrete.

(5) In the fixing structure, the particles contained in the first adhesive are smaller than the particles contained in the second adhesive.

(6) In the fixing structure described above, the second adhesive is easier to dissolve in a predetermined solvent than the first adhesive.

(7) In the above fixing structure, when the second adhesive is heated, its adhesive strength weakens at a temperature lower than that of the first adhesive.

(8) In the fixing structure, the bonding area of the first adhesive is larger than the bonding area of the second adhesive.

(9) In the above fixing structure, the support member has a plate-like base, the second adhesive is provided between the plate and the base, and fixes the base to the plate; The plate is larger than the base, and the area bonded by the first adhesive is greater than the area bonded by the second adhesive.

(10) In the fixing structure, the thickness of the plate is thinner than the thickness of the base.

(11) A fixing method according to one aspect of the present invention is a fixing method for fixing an installation object to a concrete floor, wherein a plate is fixed to the floor using a first adhesive, A support member for supporting the installation object is fixed to the plate using a second adhesive.

(12) A method for modifying a fixed structure according to one aspect of the present invention includes a support member that supports an installed object, a plate that is arranged between the support member and a concrete floor surface, and the plate and the floor surface. A first adhesive that is provided between and fixes the plate to the floor surface, and a second adhesive that is provided between the support member and the plate and fixes the support member to the plate In the modification method of the fixed structure, the adhesive strength of the second adhesive is weakened while the plate is fixed to the floor surface by the first adhesive, and the support member is removed from the plate.

(13) In the method for modifying the fixing structure described above, while the plate is left on the floor, a new support member for supporting a new object is placed on the plate, and the second adhesive is newly applied. Or fix with another glue.

(14) In the method for modifying the fixing structure described above, the plate is left on the floor surface, and the first adhesive or another adhesive newly applied to the floor surface is applied to the new plate. and, with the plate left on the floor, a new support member for supporting a new installation is fixed on the new plate with the newly applied second adhesive or another adhesive. do.

ADVANTAGE OF THE INVENTION According to the present invention, a fixing structure, a fixing method, and a fixing structure that can secure the fixing strength of an installed object to a concrete floor without using post-installed anchors and can be modified relatively easily. It is possible to provide a modification method of

1 is a cross-sectional view showing an installation, a fixed structure, and a concrete floor of the first embodiment; FIG. 2 is a cross-sectional view showing an enlarged region surrounded by F2 line in FIG. 1; FIG. FIG. 3 is a cross-sectional view along line F3-F3 of the fixing structure shown in FIG. 2; FIG. 2 is a diagram showing properties of an epoxy resin-based adhesive and a urethane resin-based adhesive; It is a flowchart which shows an example of the flow of the fixing method of 1st Embodiment. FIG. 4 is a cross-sectional view showing a fixation structure before and after modification of an example of the first embodiment; 4 is a flow chart showing an example of the flow of a fixing structure modification method according to the first embodiment. Sectional drawing which shows the fixing structure before and behind modification|change of another example of 1st Embodiment. FIG. 7 is a flow chart showing another example of the flow of the fixing structure modification method of the first embodiment; FIG. FIG. 4 is a cross-sectional view showing the fixed structure and concrete floor of the second embodiment; FIG. 13 is a perspective view showing the installation, fixed structure, and concrete floor of the third embodiment; FIG. 10 is a plan view showing the installation, fixed structure and concrete floor before and after an example modification of the third embodiment;

A fixing structure, a fixing method, and a modification method of the fixing structure according to the embodiment will be described below. In the following description, the same reference numerals are given to components having the same or similar functions. Duplicate descriptions of these configurations may be omitted.

(First embodiment)
The fixed structure FS of the first embodiment, for example, can be widely used in communication facilities, data centers, and other various facilities, and is made of a concrete floor surface 1 (for example, a floor slab, hereinafter referred to as "concrete floor 1"). ) is a fixing structure for fixing the installed object 2 with respect to. That is, in this specification, "fixing an installation object to a concrete floor" is not limited to directly fixing an installation object itself to a concrete floor, and fixing a support member that supports an installation object to a concrete floor. It also includes the case where the installed object does not move on the concrete floor by doing so.

In this embodiment, the installation object 2 fixed by the fixing structure FS includes various equipment installed in the building (for example, a communication switchboard, an air conditioner, various power system devices (battery)), and two equipment installed in the building. It is a member for forming a heavy floor. However, the installation object 2 fixed by the fixing structure FS is not limited to a specific device, device, or member, and can be widely applied to various devices, devices, and members.

(fixed structure)
First, the fixing structure FS of the first embodiment will be described. FIG. 1 is a cross-sectional view showing an installation 2, a fixed structure FS, and a concrete floor 1 of the first embodiment. In FIG. 1, for convenience of explanation, illustration of a plate and an adhesive included in the fixing structure FS is omitted.

The fixed structure FS includes a metal support member 10 that supports the installed object 2 . In this embodiment, the support member 10 is arranged below the installation object 2 and supports the installation object 2 from below. The support member 10 is, for example, a pedestal. The support member 10 includes, for example, a support member body (mount body) 11 , a support shaft 12 and a base 13 . The supporting member main body 11, the supporting shaft 12, and the base 13 are made of metal (for example, steel).

The support member main body 11 constitutes a main part of the support member 10, is arranged below the installation object 2, and supports the installation object 2 from below. In other words, the installation object 2 is placed on the support member main body 11 and fixed to the support member main body 11 by a fixing member (not shown). Thereby, the installation object 2 is installed in the building.

The support shaft 12 protrudes downward from the lower end of the support member main body 11 . The support shaft 12 is formed in the shape of a shaft extending in the vertical direction, and is arranged substantially perpendicular to the concrete floor 1 . The support shafts 12 are arranged corresponding to the four corners of the support member main body 11 in plan view. However, the arrangement position of the support shaft 12 is not limited to the above example.

The base 13 is arranged at the bottom of the support member 10 . The base 13 is formed in a plate shape substantially parallel to the upper surface of the concrete floor 1 . The base 13 has a polygonal shape (for example, a rectangular shape), but may have a circular shape or other shapes. The base 13 is connected to the lower end of the support shaft 12 and supports the support shaft 12 from below.

FIG. 2 is a cross-sectional view showing an enlarged area surrounded by line F2 in FIG. FIG. 3 is a cross-sectional view of the fixing structure FS shown in FIG. 2 along line F3-F3. In FIG. 3, the first adhesive 21 and the second adhesive 22 are hatched in a dot pattern for easy understanding. As shown in FIGS. 2 and 3, the fixed structure FS has a plate 20, a first adhesive 21 and a second adhesive 22 in addition to the support member 10 described above.

Plate 20 is formed in a plate shape along the upper surface of concrete floor 1 . A plate 20 is arranged between the support member 10 and the concrete floor 1 . In this embodiment the plate 20 is arranged between the base 13 of the support member 10 and the concrete floor 1 . The plate 20 is, for example, made of metal (for example, steel). The plate 20 is made of substantially the same material as the base 13 of the support member 10, for example.

The thickness T1 of the plate 20 is thinner than the thickness T2 of the base 13 (see FIG. 2). The plate 20 has a thickness that allows it to be elastically deformed according to, for example, distortion of the upper surface of the concrete floor 1 . The thickness T1 of the plate 20 is, for example, 1.0 mm to 2.0 mm, but is not limited to this. For example, even if the plate 20 is left on the concrete floor 1 for a long period of time (for example, semi-permanently until the building is demolished), the plate 20 has a thickness that does not easily interfere with the installation of a new fixed structure or other work. However, the plate 20 is not limited to being thin as described above, and may have a certain thickness.

The plate 20 has an outer shape larger than that of the base 13 in plan view (see FIG. 3). Here, for convenience of explanation, a first direction X and a second direction Y are defined. The first direction X and the second direction Y are directions substantially parallel to the upper surface of the concrete floor 1, respectively. The second direction Y is a direction substantially perpendicular to the first direction X. As shown in FIG. When the first direction X and the second direction Y are defined as such, the width W1X of the plate 20 in the first direction X is greater than the width W2X of the base 13 in the first direction X. As shown in FIG. The width W1Y of the plate 20 in the second direction Y is greater than the width W2Y of the base 13 in the second direction Y. As shown in FIG.

In other words, plate 20 has first region 31 and second region 32 . The first region 31 is a region overlapping the base 13 of the support member 10 in the thickness direction of the plate 20 (the vertical direction in this embodiment). On the other hand, the second region 32 is located on the outer peripheral side of the first region 31 and is a region that does not overlap the base 13 of the support member 10 in the thickness direction of the plate 20 .

A first adhesive (first adhesive layer) 21 is provided between the plate 20 and the concrete floor 1 to fix the plate 20 to the concrete floor 1 . The first adhesive 21 has, for example, the property of being able to firmly fix the metal plate 20 and the concrete floor 1 together. The first adhesive 21 is provided, for example, on the entire surface (entire area) of the plate 20 . That is, the first adhesive 21 is provided on both the first area 31 and the second area 32 of the plate 20 . Thereby, the first adhesive 21 more firmly fixes the plate 20 to the concrete floor 1 .

A second adhesive (second adhesive layer) 22 is provided between the support member 10 and the plate 20 to fix the support member 10 to the plate 20 . The second adhesive 22 has, for example, the property of being able to firmly fix the metal support member 10 and the metal plate 20 . In this embodiment, the second adhesive 22 is provided between the base 13 of the support member 10 and the plate 20 to fix the base 13 to the plate 20 . The second adhesive 22 is provided, for example, on the entire surface (entire area) of the base 13 . In other words, the second adhesive 22 is provided on the first region 31 of the plate 20 and its vicinity. The second adhesive 22 is not provided on all or most of the second region 32 of the plate 20 .

Therefore, the bonding area by the first adhesive 21 (the bonding area between the plate 20 and the concrete floor 1 by the first adhesive 21) is the bonding area by the second adhesive 22 (the base 13 and the plate by the second adhesive 22). 20).

In this embodiment, the first adhesive 21 and the second adhesive 22 are adhesives of different types. An example of each characteristic (feature) of the first adhesive 21 and the second adhesive 22 will be described below. However, the first adhesive 21 and the second adhesive 22 need not have all the properties described below, and may have any one or more properties.

For example, the first adhesive 21 is a thermosetting adhesive. On the other hand, the second adhesive 22 is a room temperature curable adhesive. In general, thermosetting adhesives have higher adhesive strength than room-temperature-setting adhesives, and first adhesive 21 has higher adhesive strength than second adhesives 22 . For example, the first adhesive 21 has a higher shear adhesive strength than the second adhesive 22 . “Shear bond strength” means bond strength in the direction along the upper surface of the concrete floor 1 .

For example, the first adhesive 21 is an adhesive that can impregnate concrete. On the other hand, the second adhesive 22 is an adhesive that does not impregnate concrete or that has less impregnability into concrete than the first adhesive 21 . For example, the particles contained in first adhesive 21 are smaller than the particles contained in second adhesive 22 . In general, the smaller the particles that make up the adhesive, the better the impregnation of the adhesive object (for example, concrete). When the impregnating property to the object to be adhered is high, the adhesive strength to the object to be adhered increases.

For example, the second adhesive 22 is easier to dissolve in a given solvent than the first adhesive 21 . The predetermined solvent is, for example, a release agent (dissolving agent) that impregnates the second adhesive 22 to weaken the adhesion of the second adhesive.

For example, the second adhesive 22 has lower heat resistance than the first adhesive 21 . When the second adhesive 22 is heated, its adhesive strength weakens at a lower temperature than the first adhesive. In other words, the adhesive force of the second adhesive 22 is weakened by being continuously heated to a specific temperature for a predetermined period of time. On the other hand, even if the first adhesive 21 is continuously heated to the specific temperature for the predetermined time, the adhesive strength of the first adhesive 21 is less likely to weaken than the second adhesive 22 .

In this embodiment, the first adhesive 21 is, for example, an epoxy resin adhesive. On the other hand, the second adhesive 22 is, for example, a urethane resin adhesive.

An "epoxy resin-based adhesive" is an adhesive containing an epoxy resin as a main component and a modified polyamine or modified polyamide as a curing agent. According to another definition, "epoxy resin-based adhesive" means an adhesive in which a compound containing an epoxy group is cured with amines, acid anhydrides, or the like.

"Urethane resin-based adhesive" is an adhesive containing isocyanate-polyol as a main component. According to another definition, "urethane resin-based adhesive" means, for example, an adhesive that utilizes the reactivity of an isocyanate group (-NCO) contained in the molecule. An example of the "urethane resin-based adhesive" is a moisture-curing one-liquid adhesive containing an NCO group-terminated prepolymer as a main component.

FIG. 4 is a diagram showing typical properties of an epoxy resin-based adhesive and a urethane resin-based adhesive. As shown in FIG. 4, the epoxy resin-based adhesive has thermosetting properties, has good heat resistance against being continuously heated to less than 100° C., and is resistant to water, oil, and alkalis. It has good chemical resistance to acids, good chemical resistance to acids, and impregnation into concrete. On the other hand, urethane resin-based adhesives have room-temperature curing properties, allow continuous heating below 80°C (for example, in the case of silylated urethane resin-based adhesives), and are resistant to water, acids, alkalis, and oils. It has good chemical resistance (for example, in the case of silylated urethane resin systems) and virtually no impregnation into concrete. In this specification, "excellent" and "excellent" mean better than "good" and "good." However, the first adhesive 21 and the second adhesive 22 are not limited to the epoxy resin adhesive and the urethane resin adhesive.

(fixing method by fixing structure)
Next, a method for fixing the installation object 2 using the fixing structure FS of this embodiment will be described. FIG. 5 is a flow chart showing an example of the flow of the fixing method of this embodiment. First, the first adhesive 21 is applied to the area where the plate 20 is to be installed on the surface of the concrete floor 1 (S101). Next, the plate 20 is placed on the applied first adhesive 21 (S102). Note that the first adhesive 21 may be applied to the surface of the plate 20 in addition to the concrete floor 1 or instead of the concrete floor 1 . Then, for example, by heating the first adhesive 21, the first adhesive 21 is cured (S103). The plate 20 is thereby adhered to the concrete floor 1 .

At this time, force may be applied to the plate 20 toward the concrete floor 1 in order to deform the plate 20 according to distortion of the upper surface of the concrete floor 1 or the like. A method of applying force to the plate 20 may be manual or mechanical, or may be performed by placing a weight on the plate 20, and the method is not particularly limited. As a result, the plate 20 is fixed to the concrete floor 1 in a state where the plate 20 is deformed according to distortion of the upper surface of the concrete floor 1 or the like.

Next, the second adhesive 22 is applied to the area of the surface of the plate 20 where the base 13 of the support member 10 is to be installed (S104). Next, the base 13 of the support member 10 is placed on the applied second adhesive 22 (S105). The second adhesive 22 may be applied to the surface of the base 13 of the support member 10 in addition to the plate 20 or instead of the plate 20 . Then, the second adhesive 22 is cured (S106). Thereby, the base 13 of the support member 10 is adhered to the plate 20 . Thereby, a fixing structure FS for fixing the installation object 2 to the concrete floor 1 is realized. After that, the installation object 2 is fixed to the support member 10 . Thereby, the installed object 2 is fixed to the concrete floor 1 .

(Method 1 for modifying fixing structure)
Next, an example of a modification method of the fixed structure FS of this embodiment will be described. That is, the installed object 2 may be replaced with a new installed object 2A (see FIG. 12) due to advances in technology, changes in usage (requirements), or other reasons. The new installed object 2A differs from the existing installed object 2 in, for example, its weight, size, required earthquake resistance, and the like. Therefore, when installing a new installation object 2A, a new support member 10A corresponding to the new installation object 2A may be provided. FIG. 6 is a cross-sectional view showing the fixing structure FS before and after modification. (a) in FIG. 6 shows the fixed structure FS before modification. (b) in FIG. 6 shows the fixed structure FS after modification.

Here, a modified method of fixing a new support member 10A for supporting a new installation object 2A onto a plate 20 left on the concrete floor 1 will be described. It should be noted that the configuration of the new support member 10A is taken as an example in which the configuration is substantially the same as that of the existing support member 10. As shown in FIG. That is, the new support member 10A has a plate-like base 13, for example. However, the new support member 10A may have a different configuration from the existing support member 10. FIG.

FIG. 7 is a flow chart showing an example of the flow of the modification method of the fixed structure FS of this embodiment. In this modification method, first, the adhesive force of the second adhesive 22 is weakened (S201). The method of weakening the adhesive force of the second adhesive 22 may be performed by, for example, applying a release agent (dissolving agent) to the second adhesive 22 and impregnating the second adhesive 22 with the release agent. Well, it may be performed by heating the second adhesive 22 . However, the method of weakening the adhesive strength of the second adhesive 22 is not limited to the above example, and another method may be used.

Here, the release agent applied to the second adhesive 22 may be the following predetermined release agent. That is, the "predetermined release agent" has the effect of weakening the adhesive strength of the second adhesive 22 (suitable for the composition of the second adhesive 22), but the effect of weakening the adhesive strength of the first adhesive 21 (first adhesive 21) is preferred. With such a release agent, even if the release agent should come into contact with the first adhesive 21, it is possible to prevent the adhesive force of the first adhesive 21 from significantly weakening.

Heating the second adhesive 22 may be performed, for example, by applying heat to the base 13 of the support member 10 . According to such a method, compared with the case of heating the second adhesive 22 by applying heat to the plate 20, for example, the temperature rise of the first adhesive 21 is suppressed, and the adhesive strength of the first adhesive 21 is reduced. weakening can be suppressed.

Moreover, heating the second adhesive 22 may be performed by heating the second adhesive 22 to a specific temperature. The "specific temperature" is, for example, a temperature lower than the upper limit of the heat resistance temperature of the first adhesive 21 (that is, the temperature at which the adhesive strength of the first adhesive 21 is maintained at a predetermined level or more), and the second adhesive It is the temperature at which the adhesive strength of 22 weakens. For example, epoxy resin adhesives have good heat resistance against being continuously heated to less than 100°C, while urethane resin adhesives are allowed to be continuously heated to less than 80°C. In that case, the specific temperature is, for example, a temperature between 80°C and 100°C. According to such a method, even when the second adhesive 22 is heated, it is possible to avoid the adhesive force of the first adhesive 21 from being greatly weakened.

Next, the base 13 of the support member 10 is removed from the plate 20 (S202). That is, in a state in which the plate 20 is fixed to the concrete floor 1 by the first adhesive 21 and the plate 20 is left on the concrete floor 1, the adhesive force of the second adhesive 22 is weakened so that the support member 10 is attached to the plate 20. Remove from Next, the second adhesive 22 remaining on the upper surface of the plate 20 is removed using, for example, a remover (S203). This completes the work for removing the old support member 10 .

Next, with the plate 20 left on the concrete floor 1, a new support member 10A for supporting the new installation object 2A is fixed to the plate 20 with the second adhesive 22. As shown in FIG. That is, the uncured second adhesive 22 is newly applied to the area of the surface of the plate 20 where the base 13 of the new support member 10A is to be installed (S204). Next, the base 13 of the new support member 10A is placed on the newly applied uncured second adhesive 22 (S205). The second adhesive 22 may be applied to the surface of the base 13 of the new support member 10A in addition to the plate 20 or instead of the plate 20. FIG. Then, the newly applied second adhesive 22 is cured (S206). As a result, the base 13 of the new support member 10A is adhered to the plate 20. As shown in FIG. Thereby, a fixing structure FS for fixing the new support member 10A is realized.

Note that the new support member 10A may be fixed to the plate 20 with another adhesive 22A instead of the second adhesive 22. FIG. Another adhesive 22A has properties similar to those of the second adhesive 22, for example, but not limited thereto. Another adhesive 22 A may be an adhesive having different properties than the second adhesive 22 .

(Fixation structure modification method 2)
Next, another example of the modification method of the fixed structure FS of this embodiment will be described. FIG. 8 is a cross-sectional view showing the fixing structure FS before and after modification. (a) in FIG. 8 shows the fixed structure FS before modification. (b) in FIG. 8 shows the fixed structure FS after modification.

Here, a modification method will be described in which a new support member 10A for supporting a new installed object 2A is fixed on a new plate 20A newly installed on the concrete floor 1, not on the plate 20 left on the concrete floor 1. . It should be noted that the configuration of the new support member 10A is taken as an example in which the configuration is substantially the same as that of the existing support member 10. As shown in FIG. That is, the new support member 10A has a plate-shaped base 13, for example. However, the new support member 10A may have a different configuration from the existing support member 10. FIG. The plate 20A has substantially the same material as the existing plate 20, for example. However, the plate 20A may differ from the existing plate 20 in material, shape and size.

FIG. 9 is a flow chart showing an example of the flow of the modification method of the fixed structure FS of this embodiment. Note that S201 to S203 are substantially the same as the modifying method described with reference to FIG. 7, and redundant description will be omitted.

In the modification method described here, a new plate 20A is fixed to the concrete floor 1 while the old plate 20 is fixed to the concrete floor 1 by the first adhesive 21 and the old plate 20 remains on the concrete floor 1. That is, the first adhesive 21 is newly applied to the area where the new plate 20A is to be installed on the surface of the concrete floor 1 (S301). The area where the new plate 20A is installed is, for example, an area different from the area where the old plate 20 is installed.

Next, a new plate 20A is placed on the newly applied first adhesive 21 (S302). The first adhesive 21 may be applied to the surface of the new plate 20A in addition to the concrete floor 1 or instead of the concrete floor 1. Then, for example, by heating the newly applied first adhesive 21, the newly applied first adhesive 21 is cured (S303). Thereby, the new plate 20A is adhered to the concrete floor 1. The new plate 20A is positioned below the base 13 of the new support member 10A.

At this time, for example, a force may be applied to the plate 20A toward the concrete floor 1 to deform the new plate 20A according to distortion of the upper surface of the concrete floor 1 or the like. The details of this work are substantially the same as the work for fixing the plate 20 to the concrete floor 1 described above, so redundant description will be omitted.

Next, with the old plate 20 left on the concrete floor 1, a new support member 10A for supporting the new installation object 2A is fixed to the new plate 20A with a second adhesive 22. - 特許庁That is, the second adhesive 22 is newly applied to the area of the surface of the new plate 20A where the base 13 of the new support member 10A is to be installed (S304). Next, the base 13 of the new support member 10A is placed on the newly applied second adhesive 22 (S305). The second adhesive 22 may be applied to the surface of the base 13 of the new support member 10A in addition to the new plate 20A or instead of the plate 20A. Then, the newly applied second adhesive 22 is cured (S306). This adheres the base 13 of the new support member 10A to the new plate 20A. Thereby, a fixing structure FS for fixing the new support member 10A is realized.

Also, the new plate 20A may be fixed to the concrete floor 1 with another adhesive 21A instead of the first adhesive 21. FIG. Another adhesive 21A has properties similar to those of the first adhesive 21, for example, but is not limited thereto. Another adhesive 21 A may be an adhesive having different properties than the first adhesive 21 .

Also, the new support member 10A may be fixed to the new plate 20A with another adhesive 22A instead of the second adhesive 22. FIG. Another adhesive 22A has properties similar to those of the second adhesive 22, for example, but not limited thereto. Another adhesive 22 A may be an adhesive having different properties than the second adhesive 22 .

Also, the method of modifying the fixed structure FS is not limited to the two examples described above. The "modification method" as used herein does not always involve the installation of a new support member 10A, and may be a modification method in which the new support member 10A is not provided after the support member 10 is removed from the plate 20. good. That is, the “modification method” may mean only the work of removing the old support member 10 . In this case, the alteration method is completed with the work of S203 described with reference to FIG.

According to the configuration described above, the fixing structure, fixing method, and fixing structure that can secure the fixing strength of the installed object to the concrete floor without using post-installed anchors and can be modified relatively easily. Modification methods can be provided. That is, a support member for an installation installed in a building needs to be firmly fixed to a concrete floor so that the installation does not fall down even when an earthquake or the like occurs. Post-installed anchors are generally used for such fixation.

However, in order to use post-construction anchors, large-scale construction is required. For this reason, noise and vibration during construction may become a problem. In addition, when using post-installed anchors, it is necessary to make holes in the concrete floor, so there is a risk of breaking the concrete floor or damaging the embedded objects (reinforcing bars and other embedded objects) embedded in the concrete floor. Problems such as restrictions on hole positions for post-installed anchors arise due to these buried objects.

In addition, installations installed in buildings may be renewed due to product evolution or other reasons. At this time, it may be necessary to replace the supporting member that supports the installed object with a new supporting member depending on the weight and size of the new installed object and the required earthquake resistance. In such cases, if post-installed anchors are used, remove the anchor bolts from the concrete floor. However, anchor bolts are generally removed from the concrete floor by cutting the tip embedded in the concrete floor. Therefore, the tip of the cut anchor bolt remains on the concrete floor. As a result, new anchor bolts cannot be installed at positions where anchor bolts were previously installed.

Therefore, it is conceivable to fix the support member that supports the installed object to the concrete floor with an adhesive. Here, an adhesive that can secure adhesive strength to a concrete floor tends to firmly bond the support member and the concrete floor. For this reason, when removing the support members from the concrete floor in response to the renewal of the installation, if the thickness of the concrete floor is thin or the strength of the concrete floor is low, the concrete floor may be destroyed. have a nature. On the other hand, there are adhesives that have lower adhesive strength than the above adhesives, or adhesives that can be weakened by applying a release agent or heat, but these adhesives are not suitable for concrete floors. However, it is difficult to secure the necessary adhesive strength.

Therefore, the fixed structure FS of this embodiment consists of a support member 10 that supports the installed object 2, a plate 20 that is arranged between the support member 10 and the concrete floor 1, and a plate 20 that is placed between the plate 20 and the concrete floor 1. A first adhesive 21 is provided and a second adhesive 22 is provided between the support member 10 and the plate 20 . According to such a configuration, the plate 20 and the concrete floor 1 can be firmly fixed by selecting an adhesive that can secure the necessary adhesive strength to the concrete floor 1 as the second adhesive 22. can. On the other hand, between the support member 10 and the plate 20, the necessary adhesive strength can be ensured by the second adhesive 22. As shown in FIG. Here, since the plate 20 is provided between the support member 10 and the concrete floor 1 , when removing the support member 10 , compared to the case where the support member 10 is directly adhered to the concrete floor 1 , , the concrete floor 1 is hard to be destroyed. Therefore, the support member 10 can be fixed to the concrete floor 1 without using post-installed anchors, and noise and vibration during construction, breakage of the concrete floor, and damage to embedded objects embedded in the concrete floor surface are avoided. Therefore, it is possible to avoid the fear of the hole position and the limitation of the hole position due to those embedded objects.

Further, according to the configuration of this embodiment, when the support member 10 is renewed, the existing plate 20 can be left on the concrete floor 1 and the new support member 10A can be fixed on the existing plate 20. As a result, it is possible to reduce the cost of the parts required for the renewal work and improve the efficiency of the work itself.

In this embodiment, the second adhesive 22 is an adhesive different in kind from the first adhesive 21 . That is, since the plate 20 is provided between the support member 10 and the concrete floor 1 , the second adhesive 22 does not need to have high adhesiveness to the concrete floor 1 , and the material of the support member 10 and the plate 20 is If the necessary adhesive strength can be ensured by using the adhesive, it is possible to adopt an adhesive that takes into account the detachability of the support member 10 when it is renewed. As the second adhesive 22, for example, an adhesive that makes it easier to remove the support member 10 than the first adhesive 21 (for example, an adhesive that has a weaker adhesive strength than the first adhesive 21, or a release agent or heat By adopting an adhesive that weakens the adhesive force by using the adhesive, the support member 10 can be easily removed from the plate 20 .

In this embodiment, the first adhesive 21 is a thermosetting adhesive. The second adhesive 22 is a room temperature curable adhesive. In general, thermosetting adhesives have higher adhesive strength than room-temperature-setting adhesives. For this reason, according to the above configuration, it is possible to secure high adhesive strength to the concrete floor 1 and to facilitate removal of the support member 10 from the plate 20 .

In this embodiment, the first adhesive 21 is an adhesive that can impregnate concrete. The second adhesive 22 is an adhesive that does not impregnate concrete or that has a lower impregnability into concrete than the first adhesive 21 . With such a configuration, it is possible to secure a higher bonding strength to the concrete floor 1 . Moreover, it may become easier to remove the support member 10 from the plate 20 .

In this embodiment, the particles contained in the first adhesive 21 are smaller than the particles contained in the second adhesive. With such a configuration, it is possible to secure a higher bonding strength to the concrete floor 1 . Moreover, it may become easier to remove the support member 10 from the plate 20 .

In this embodiment, the second adhesive 22 is easier to dissolve in a given solvent than the first adhesive 21 . Such a configuration makes it easier to remove the support member 10 from the plate 20 . Thereby, workability of renewal work of the installation object 2 and the support member 10 can be improved.

In this embodiment, when the second adhesive 22 is heated, the adhesive strength weakens at a lower temperature than the first adhesive 21 . Such a configuration makes it easier to remove the support member 10 from the plate 20 . Thereby, workability of renewal work of the installation object 2 and the support member 10 can be improved. Also, by appropriately managing the heating temperature (for example, by managing the heating temperature to the above-described “specific temperature”), weakening of the adhesive strength of the first adhesive 21 can be suppressed.

In this embodiment, the bonding area of the first adhesive 21 is larger than the bonding area of the second adhesive. With such a configuration, it is possible to ensure high adhesive strength to the concrete floor 1 and to facilitate removal of the support member 10 from the plate 20 .

(Second embodiment)
Next, the fixing structure FS of the second embodiment will be explained. The second embodiment differs from the first embodiment in that the base 13 of the support member 10 has a plurality of through-holes 41 . Configurations other than those described below are the same as those of the first embodiment.

FIG. 10 is a sectional view showing the fixed structure FS and the concrete floor 1 of the second embodiment. In this embodiment, the base 13 of the support member 10 has a plurality of through holes 41 . The through hole 41 vertically penetrates the base 13 . The through hole 41 is, for example, a hole provided for a conventional post-installed anchor, but may be a hole provided for another purpose.

In the present embodiment, part of the second adhesive 22 also penetrates inside each of the plurality of through holes 41 and adheres to the inner peripheral surfaces of the through holes 41 as well. As a result, the lateral displacement strength of the support member 10 with respect to the plate 20 is further enhanced.

In this embodiment, when heating the second adhesive 22 to weaken the adhesive strength of the second adhesive 22, for example, a heater is inserted into the through hole 41 to The portion exposed to the inside of 41 is directly heated. This makes it easier to heat the entire area of the second adhesive 22 more uniformly than in the first embodiment. As a result, it becomes easier to remove the support member 10 from the plate 20 .

(Third Embodiment)
Next, the fixing structure FS of the third embodiment will be described. The third embodiment is different from the first embodiment in that the plate 20 is provided in common for a plurality of installed objects 2 . Configurations other than those described below are the same as those of the first embodiment.

FIG. 11 is a perspective view showing the installation object 2, fixed structure FS, and concrete floor 1 of the third embodiment. In this embodiment, the plate 20 is provided integrally with the plurality of installation objects 2 (the plurality of support members 10). More specifically, the support member 10 of each installation object 2 includes four bases 13, a first base 13A, a second base 13B, and a third base 13C arranged corresponding to four corners of each installation object 2. , and a fourth base 13D. Also, the plurality of plates 20 includes a first plate 51 and a second plate 52 .

The first plate 51 is formed in a rectangular shape and extends under the first bases 13A and the second bases 13B of the installation objects 2 . The first plate 51 is fixed to the concrete floor 1 with the first adhesive 21 . The first plate 51 is fixed to the first bases 13A and the second bases 13B of the installation objects 2 with the second adhesive 22 .

The second plate 52 is formed in a rectangular shape and extends under the third bases 13C and the fourth bases 13D of the multiple installation objects 2 . The second plate 52 is fixed to the concrete floor 1 with the first adhesive 21 . The second plate 52 is fixed to the third bases 13C and the fourth bases 13D of the installation objects 2 with the second adhesive 22 .

FIG. 12 is a plan view showing the installation 2, the fixed structure FS, and the concrete floor 1 before and after modification. (a) in FIG. 12 shows the state before modification. (b) in FIG. 12 shows the state after modification. FIG. 12 shows an example in which a new plate 20A supporting a new support member 10A is installed as part of the fixed structure after modification. In this embodiment, a new plate 20A is installed below the third base 13C and fourth base 13D of the new support member 10A. The third base 13C and fourth base 13D of the new support member 10A are secured to the new plate 20A by a newly applied second adhesive 22 or another adhesive 22A. Meanwhile, the first base 13A and the second base 13B of the new support member 10A are fixed to the existing plate 51 by a newly applied second adhesive 22 or another adhesive 22A.

As shown in FIG. 12, when the installed object 2 is renewed, the size of the new installed object 2A may become larger than the size of the old installed object 2 . In such a case, by installing new plates 20A only at necessary locations, it is possible to flexibly modify the installation object 2. FIG.

The first to third embodiments have been described above. However, embodiments are not limited to the above examples. For example, the concrete floor 1 on which the fixed structure FS is provided may be a floor surface in which finishing processing is performed on the surface of a concrete material (for example, dustproof coating is performed). For example, the member provided between the support member and the concrete floor is not limited to a plate, and may be a block (for example, a metal block). Therefore, the "plate" in this specification may be read as "intermediate member" or "intervening member". In other words, the "plate" is an example of an "intermediate member" or an "intervening member" respectively. Also, the first adhesive 21 and the second adhesive 22 may be of the same kind.

FS... Fixed structure 1... Concrete floor 2... Installation object 10, 10A... Support member 11... Support member main body 12... Support shaft 13... Base 20, 20A... Plate 21... First adhesive, 22... Second adhesive.

Claims (16)

A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the support member and the plate to secure the support member to the plate;
with
The first adhesive is a thermosetting adhesive,
The second adhesive is a room temperature curable adhesive,
A fixed structure characterized by: A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the support member and the plate to secure the support member to the plate;
with
The first adhesive is an adhesive that can impregnate concrete,
The second adhesive is an adhesive that does not impregnate into concrete or that has less impregnation into concrete than the first adhesive.
A fixed structure characterized by: A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the support member and the plate to secure the support member to the plate;
with
the particles contained in the first adhesive are smaller than the particles contained in the second adhesive;
A fixed structure characterized by: A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the support member and the plate to secure the support member to the plate;
with
The second adhesive is more soluble in a predetermined solvent than the first adhesive,
A fixed structure characterized by: A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the support member and the plate to secure the support member to the plate;
with
wherein the second adhesive loses its adhesive strength at a lower temperature than the first adhesive when heated;
A fixed structure characterized by: A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the plate-shaped base of the support member and the plate, and fixing the base of the support member to the plate;
with
the thickness of the plate is less than the thickness of the base;
The bonding area by the first adhesive is larger than the bonding area by the second adhesive,
A fixed structure characterized by: A fixed structure for fixing an installation object to a concrete floor,
a support member that supports the installed object;
a plate disposed between the support member and the floor;
a first adhesive provided between the plate and the floor surface and fixing the plate to the floor surface;
a second adhesive provided between the support member and the plate to secure the support member to the plate;
with
The support member has a plate-like base,
the second adhesive is provided between the plate and the base to secure the base to the plate;
the plate is larger than the base;
the thickness of the plate is less than the thickness of the base;
The bonding area by the first adhesive is larger than the bonding area by the second adhesive,
A fixed structure characterized by: a support member for supporting an installed object; a plate disposed between the support member and a concrete floor; and a plate provided between the plate and the floor to fix the plate to the floor. A method for modifying a fixing structure having a first adhesive and a second adhesive provided between the support member and the plate to fix the support member to the plate,
weakening the adhesive force of the second adhesive and removing the support member from the plate while the plate is fixed to the floor surface by the first adhesive;
With the plate left on the floor, a new support member for supporting a new installation is fixed on the plate with the newly applied second adhesive or another adhesive.
Modification method of fixed structure. a support member for supporting an installed object; a plate disposed between the support member and a concrete floor; and a plate provided between the plate and the floor to fix the plate to the floor. A method for modifying a fixing structure having a first adhesive and a second adhesive provided between the support member and the plate to fix the support member to the plate,
weakening the adhesive force of the second adhesive and removing the support member from the plate while the plate is fixed to the floor surface by the first adhesive;
While the plate remains on the floor, fixing a new plate using the first adhesive or another adhesive newly applied to the floor;
While the plate remains on the floor, a new support member for supporting a new installation is fixed onto the new plate with the newly applied second adhesive or another adhesive.
Modification method of fixed structure. A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
In order to fix a support member that supports the installation object using a second adhesive to the plate,
Using a thermosetting adhesive as the first adhesive,
Using a room temperature curable adhesive as the second adhesive,
A fixing method characterized by: A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
In order to fix a support member that supports the installation object using a second adhesive to the plate,
Using an adhesive that can impregnate concrete as the first adhesive,
For the second adhesive, an adhesive that does not impregnate into concrete or that has lower impregnation into concrete than the first adhesive is used;
A fixing method characterized by: A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
When fixing the support member that supports the installation object using the second adhesive to the plate,
Using an adhesive in which the particles contained in the first adhesive are smaller than the particles contained in the second adhesive,
A fixing method characterized by: A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
When fixing the support member that supports the installation object using the second adhesive to the plate,
Using an adhesive that is more soluble in a predetermined solvent as the second adhesive than the first adhesive,
A fixing method characterized by: A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
In order to fix a support member that supports the installation object using a second adhesive to the plate,
using the second adhesive that, when heated, weakens in adhesive strength at a lower temperature than the first adhesive;
A fixing method characterized by: A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
When fixing the base of the support member that supports the installation object using the second adhesive to the plate,
making the thickness of the plate thinner than the thickness of the base,
making the bonding area by the first adhesive larger than the bonding area by the second adhesive;
A fixing method characterized by: A fixing method for fixing an installation object to a concrete floor surface,
fixing a plate to the floor using a first adhesive;
In order to fix a support member that supports the installation object using a second adhesive to the plate,
The support member has a plate-like base,
providing the second adhesive between the plate and the base to secure the base to the plate;
making the plate larger than the base,
making the thickness of the plate thinner than the thickness of the base,
making the bonding area by the first adhesive larger than the bonding area by the second adhesive;
A fixing method characterized by:

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