JP2008069269A - Member-bonding technique using adhesive-impregnated substrate, bonding member used therefor and member-bonded structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member-bonding technique enabling bonding between various kinds of materials, e.g. bonding between members made of metals, bonding between members made of concrete, bonding between members between wood, bonding between a member made of metal and a member made of concrete, bonding between a member made of metal and a member made of wood and bonding between a member made of concrete and a member made of wood, being utilizable to not only bonding between planar members, but also to bonding between members having various kinds of shapes, structures and sizes, bonding between a planar member and a three-dimensional member and bonding between three-dimensional members and not only solving the above various kinds of problems, but also achieving adhesive effect such as improvement of adhesive strength and toughness which is superior than adhesive effect obtained directly bonding members to each other with an adhesive by selecting an adequate impregnation material. <P>SOLUTION: The member bonding technique comprises interposing an adhesive-impregnated substrate between members to be bonded. As a result, whole area can be bonded and adhesive strength is improved and toughness is exhibited. The member for bonding, in which a substrate is impregnated with an adhesive or the substrate is not impregnated with the adhesive, is obtained by attaching a substrate or/and a backup material to a surface of either one member to be bonded. The member-bonded structure is obtained by bonding members in a state in which an adhesive-impregnated substrate is interposed between members. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a member joining method that can be used in various fields such as civil engineering and construction, a joining member used in the method, and a member joining structure constructed by the method. For example, an elevated road, a highway, a river bridge, etc. Reinforcing materials for various members such as existing or new bridge decks, bridge piers, road surfaces, large structures such as dams and tunnels, wall surfaces, floors, and ceilings of buildings such as buildings and houses It is possible to join covering materials, etc. More specifically, joining of precast reinforcement plates on deck plates of steel floor slabs, joining of reinforcing materials to steel materials of buildings such as buildings and apartment buildings, 2 or more It can be used for the production of laminated plywood that laminates and joins homogeneous plates and heterogeneous plates.

  As a method for attaching a reinforcing member to an existing structure, a method using bolts or welding has been generally used. However, the former has defects such as cross-sectional defects due to bolt processing, and the latter has material deterioration due to heat input. There is a method using an adhesive as a method instead of these methods, and an adhesive (bonding) structure using an adhesive is widely applied also in civil engineering structures. As a construction example using an adhesive, as shown in FIG. 7, a method of applying adhesive B on the upper surface of an existing structure A such as a steel structure or a concrete structure, and laying and attaching a reinforcing member C thereon, FIG. As described above, the spacer D is placed between the existing structure A and the reinforcing member C, the periphery of the reinforcing member C is sealed, and then the air is removed from the gap between the existing structure A and the reinforcing member C. There is a way to fill.

Bonding with conventional adhesives has the following problems.
(1) In the bonding method shown in FIG. 7, it is difficult to bring the reinforcing member C into close contact with the existing structure A when the bonding surface of the existing structure A is uneven (unevenness) or when the distortion or deformation of the bonding surface is large. In other words, the unbonded surface tends to remain, which may contribute to insufficient adhesive strength, deterioration of adhesive strength over time, and peeling.
(2) The bonding method shown in FIG. 8 requires sealing work and air venting work, and if there are holes or gaps in some parts even after sealing, the adhesive leaks, so it is necessary to fill them and the bonding work is troublesome. there were. In addition, when the amount of adhesive used increases or when the amount used increases, it takes time until the adhesive is cured and the adhesive strength is obtained, so that there is a problem that workability is poor.
(3) In both cases of FIGS. 7 and 8, if the floor surface (joint surface) of the existing structure A is inclined, the adhesive flows along the inclination, so that it is difficult to make the adhesive uniform thickness. If the work area is large, the flow of adhesive increases, so there is a limit to the area where the work can be performed once, and the work efficiency is poor.
(4) When adhering to a vertical surface (standing surface) such as a wall surface or a downward surface such as a ceiling surface, it is difficult to work because the adhesive flows or the thickness of the adhesive is uneven. However, it was difficult to achieve good adhesion even though the work was troublesome and required a lot of labor.

  The present invention can join various materials such as metal members, concrete members, wood members, metal members and concrete members, metal members and wood members, concrete members and wood members. Yes, it can be used not only for bonding of flat members but also for members of various shapes, structures and sizes, bonding of flat members and solid members, bonding of solid members, etc., and can solve the above various problems. First, by selecting an appropriate impregnating material, it is possible to realize an adhesive effect superior to the case where the members are directly bonded to each other with an adhesive, for example, an improvement in adhesive strength and toughness.

  The member bonding method according to the present invention is a method for bonding members to each other by sandwiching an adhesive-impregnated base material between the members to be bonded in the member bonding method in which the members are bonded to each other with an adhesive. In this case, as described in claim 2, an adhesive-impregnated base material or an adhesive-unimpregnated base material is layered on one of the members to be joined. In the case of a non-adhesive base material, the base material is impregnated with the adhesive, and then the base material is overlaid with the other member, or the base material is overlaid without impregnating the adhesive. Therefore, both members can be joined by impregnating the unimpregnated base material with an adhesive. Further, in the member joining method for joining members together with an adhesive as described in claim 3, a base provided with an adhesive impregnated base material or an adhesive non-impregnated base material on one side as one of the members to be joined. In the case of an adhesive-impregnated base material, the other member is stacked on the base material, and in the case of an adhesive-non-impregnated base material, the base material is impregnated with the adhesive, and then the base material is in contact with the other member. The two members can be joined by overlapping the members or by overlapping the other member without impregnating the adhesive and then impregnating the unimpregnated base material with the adhesive.

  The joining member of the present invention is a member used in a member joining method for joining members together with an adhesive as described in claim 4, and a base material or / and a backup material are provided on the joining surface of one member. The attachment and the base material are either impregnated with adhesive or not impregnated with adhesive.

  The member joining structure of the present invention is such that members are joined to each other with an adhesive impregnated base material interposed therebetween.

The member joining method according to claims 1 to 3 of the present invention has the following effects.
(1) Since the base material is impregnated with an adhesive, it is possible to form a thick adhesive layer between the members without using the conventional adhesive injection method. Even if there is a deformation or the like, the bonding of the member is ensured by the deformation of the base material, the entire surface can be bonded without an unbonded portion, the adhesive strength and the service life are improved, and it is difficult to peel off.
(2) Since the base material is impregnated with an adhesive, even when a member is bonded to a vertical surface such as a wall surface or a downward surface such as a ceiling surface, the adhesive material flows out or droops, etc. Therefore, the bonding work is facilitated, the work area that can be constructed at one time can be increased, and the amount of adhesive used can be reduced, so that the construction can be performed in a short time. For this reason, it is particularly suitable for nighttime road repair work, etc. performed with closed traffic.
(3) Since the adhesive-impregnated base material also has the function of a reinforcing material, excellent strength and toughness can be added to the adhesive layer between the members by appropriately selecting the adhesive and the base material.
(4) Since there is no waste of adhesive due to outflow, the amount of adhesive can be reduced, which helps to reduce costs.

  In the member joining method according to claim 3 of the present invention, since the base material integrated member provided with the adhesive impregnated base material or the adhesive non-impregnated base material is used on the joint surface of the member, There is also an effect that the construction becomes easy because it is not necessary to measure, cut, lay, and align the substrate.

  Since the base material or / and the backup material are attached to the joint surface of the member, the joining member according to claim 4 of the present invention does not require the base material or / and the backup material to be applied on site, and the member bonding operation Becomes easier. In particular, in the case of a precast plate that adheres onto the deck plate of the road floor slab, it can be mass-produced before use, so it must be carried to the site and laid on the deck plate as it is. Can improve work efficiency and shorten the construction period.

The member joint structure according to claim 5 of the present invention has the following effects.
(1) Since the two members are bonded to each other with the adhesive impregnated base material interposed therebetween, even if the bonding surface is uneven, distorted, deformed, etc., the entire surface is secured, and the bonding structure has excellent bonding strength.
(2) Since the adhesive-impregnated base material functions not only as an adhesive function but also as a reinforcing material, the adhesive strength between the members is improved, toughness, and excellent in earthquake resistance.

(Embodiment 1 of member joining method)
1 and 2 show the first embodiment of the member bonding method of the present invention, which is a case of an adhesive layer on-site construction type in which a base material is laid on site and impregnated with an adhesive. A planar substrate 4 is laid on the bonding surface 2 and the substrate 4 is impregnated with an adhesive, and then the other member 5 is stacked on the substrate 4 to bond both members, A method of superimposing the other member 5 on the base material 4 and then impregnating the base material 4 with an adhesive so as to bond both the members 1 and 5 with the base material 4 having been impregnated with the adhesive interposed therebetween. It is.

  For the base material 4, materials that are easy to be penetrated, infiltrated, diffused, retained, etc. (hereinafter collectively referred to as “impregnation”) are suitable. For example, sponge, nonwoven fabric, woven fabric, glass wool, steel wool, carbon fiber, Resin-based fibers and the like can be used. The substrate 4 can have various shapes and structures such as a planar shape, a net shape, an aperture plate shape in which a large number of holes are opened, a rod shape, and a chip shape. The shape of the substrate 4 may be the same as or different from the shape of the member 1 to be laid or the member 5 to be stacked. In the case of a planar, net-like, or aperture plate-like base material 4, it is laid on one member 1, and in the case of a bar shape, a plurality of base materials 4 are arranged on the joint surface 2 of one member 1 with a gap. In the case of a chip shape, it can be dispersed over the entire joining surface 2 of one member 1. In the case where the substrate 4 is planar, mesh-shaped, or aperture plate-shaped, an adhesive impregnated in the substrate 4 with the same shape or size as that of the members 1 and 5 to which the shape and size are bonded or smaller is used. It is preferable not to flow out of both the members 1 and 5 even when pushed by the other member 5 superimposed on the material 4 or to be small even if it flows out. The base material 4 may be made of a single material or may have a structure in which two or more layers of different materials are laminated, and in any case, a material excellent in adhesive impregnation property is preferable. In the case of the substrate 4 having a laminated structure, it is desirable to increase the adhesive strength by making the material of the laminated material suitable for adhesion of members. The thickness of the base material 4 varies depending on the unevenness, distortion, deformation, etc. of the joining surface 2 of the member 1 for laying it and the member 5 to be stacked, but the thickness that can be sufficiently impregnated with an adhesive, for example, about several mm to several cm Is suitable.

  The adhesive to be impregnated into the base material 4 is preferably excellent in adhesiveness with the base material 4 and the members 1 and 5, and resin adhesives such as epoxy adhesives and acrylic adhesives, cement adhesives (for example, SBR mortar), newly developed adhesives, and the like can be used.

  There are various methods of impregnating the base material 4 with the adhesive, and examples thereof include application of the adhesive to the base material 4, spraying, and immersion of the base material 4 in the adhesive.

  There are also various methods for curing the adhesive. For example, a method of mixing two types of the adhesive and the curing agent, a method of spraying the curing agent on the base material 4 impregnated with the adhesive and the curing agent, a heat curing method, and a natural curing method. There are methods.

(Embodiment 2 of member joining method)
What is shown in FIG. 3A as the second embodiment of the member joining method of the present invention is the same adhesive layer on-site construction type as in Embodiment 1 (FIG. 2), but is different from Embodiment 1 in that That is, spacers 6 are arranged at positions closer to the inside of the four corners of one member 1, the base material 4 is laid on the spacers 6, and the other member 5 is stacked thereon. Also in this case, the base material 4 can be impregnated with the adhesive either before or after the other member 5 is stacked. The spacer 6 is for securing the thickness of the adhesive layer, and is formed into a square block shape with a material that is harder than the substrate 4 and somewhat elastic, such as chloroprene rubber. Although the thickness depends on the thickness of the base material 4, it is the same as or slightly thinner than the thickness of the base material 4. Specifically, when the thickness of the base material 4 is 5 mm to 30 mm, the thickness is about 5 mm to 25 mm. Suitable. The spacer 6 may be placed on the member 1 without being fixed, or may be temporarily fixed.

  In FIG. 3 (b), an excision portion 3 that opens from the bottom surface of the base material 4 to the middle of the upper part is provided at the contact position of the spacer 6 of the base material 4 that is superimposed on the member 1. The cut portion 3 is placed on the outer periphery of the spacer 6 when it is superimposed on the member 1 from above. As shown in FIG. 3 (c), the excision part 3 may penetrate the spacer 6 contact portion of the base material 4 vertically. The shape of the spacer 6 can be other shapes such as an elongated rod shape, a disk shape, etc., and the arrangement position may be a position other than that shown in FIG. The spacer 6 can be made of any material, shape, or structure such as a steel wire or a resin pipe. In the case of a steel wire, it is also possible to assemble three wires in a tripod shape and stand on the joint surface 2 of the lower member 1 and cover the base material 4 from the top to allow the steel wire to pierce the base material 4.

  When the spacer 6 is used, by adjusting its thickness, for example, when arranging a plurality of reinforcing plates on a deck plate of a road floor slab, the heights of adjacent reinforcing plates can be made uniform. There is an advantage.

(Embodiment 3 of member joining method)
FIG. 4 shows a third embodiment of the member bonding method according to the present invention, which is a method using a base material integrated member in which the base material 4 is previously attached to the joint surface as the member 5. In this method, the base material 4 is impregnated with an adhesive before or after the member 5 is stacked thereon, and the member 5 is bonded to the member 1 with the adhesive-impregnated base material 4 interposed therebetween. The base material 4 and the adhesive in this case are the same as those in the first embodiment.

(Embodiment 4 of member joining method)
The method shown in FIG. 5 as the fourth embodiment of the member bonding method of the present invention is a method using a base material integrated member in which the base material 4 is previously attached to the bonding surface as the member 5. Similar to the case of (Embodiment 3), the difference is that a spacer 6 is arranged on the joint surface 2 of the member 1, and a base material integrated member 5 to which the base material 4 is attached is stacked thereon. is there. In this case, if the excision 3 is provided in the portion of the substrate 4 where the spacer 6 hits, the substrate 4 is called and stabilized.

(Embodiment 5 of member joining method)
6 (a) to 6 (c) as a fifth embodiment of the member joining method of the present invention, a rectangular ring-shaped backup material (seal material) 7 is bonded and fixed to the outer peripheral edge of one member 1. In addition, the base material integrated member 5 (for example, the base material integrated member 5 in FIG. 5) is stacked thereon, and the base material 4 is impregnated with an adhesive so that the base material integrated member 5 is replaced with the member. 1 is a method of bonding to 1. When using the backup material 7 as shown in FIGS. 6A to 6C, only the base material 4 is stacked on the backup material 7, and the member 5 without the base material is stacked on the base material 4. The base member 4 can be impregnated with an adhesive to bond the member 5 without the base member to the member 1. In any of these cases, the base material 4 is stabilized when the outer shape of the base material 4 is set to a size that can be tightly accommodated inside the backup material 7. The backup material 7 is used for preventing the adhesive impregnated in the base material 4 from leaking out of the member 1, and is less likely to be impregnated with the adhesive than the base material 4 from the surface of the sealing material. It is preferable to make it or a material that is not impregnated with any adhesive.

  In the case of the embodiment of FIG. 6, when air is mixed into the adhesive impregnated in the base material 4, the air is surrounded by the backup material 7 and cannot escape to the outside, and remains in the base material 4 to generate an unbonded portion. Therefore, it is necessary to devise so that air does not enter. For this purpose, for example, an air vent hole can be provided in a part of the backup material 7. Although the width, thickness, etc. of the backup material 7 depend on the size of the members 1 and 5, for example, the width can be about 10 mm.

(Embodiment 6 of member joining method)
The first to fifth embodiments are cases where the planar member 5 is overlaid on the planar lower member 1, but in the present invention, a vertical structure such as a wall surface of a building is also used for bonding a three-dimensional structure member. It can be bonded to the surface (vertical surface) from the side, or it can be bonded to the ceiling surface from below.

(Embodiment 7 of member joining method)
When bonding a reinforcing material to an existing steel slab of a road as an embodiment of the present invention, the asphalt pavement of the existing steel slab is removed in advance, and the deck plate of the existing steel slab (under FIG. 1) The upper surface (joining surface) of the member 1 is polished, the base material 4 is disposed on the joint surface, and a precast reinforcing plate (corresponding to the upper member 5 in FIG. 1) is stacked thereon, and the base material 4 The precast reinforcing plate is bonded and fixed onto the deck plate by impregnating with the adhesive. As the precast reinforcement plate, a plate in which a concrete (for example, SFRC) plate is laminated and fixed on a steel plate can be used. In this case, a substrate-integrated precast reinforcement plate in which the substrate 4 is attached to the back surface of a steel plate can be prepared and used as shown in FIG. 4 or FIG.

(Embodiment 1 of joining member)
An example of the embodiment of the joining member of the present invention will be described with reference to FIG. This joining member is attached to the entire surface of one member 5 by temporarily fixing or permanently fixing the base material 4 with an arbitrary fixing means such as an adhesive or a double-sided tape. The shapes, materials, thicknesses, and the like of the members 1 and 5 and the substrate 4 can be the same as or different from those described in the first to fifth embodiments of the member bonding method of the present invention. The base material 4 can be partially attached to several places instead of the entire surface of one side of the member 5. As shown in FIG. 5, when the spacer 6 is attached to one member 1, a cut portion 3 is provided in a portion of the base material 4 that hits the spacer 6, and the base material 4 is stacked on the member 1 from above the spacer 6. Sometimes, it is preferable that the cut portion 3 covers the outer periphery of the spacer 6 as shown in FIG.

(Embodiment 2 of joining member)
Another embodiment of the joining member of the present invention will be described with reference to FIGS. This joining member is obtained by temporarily or permanently attaching a backup material (seal material) 7 to an edge of one surface of one member 5 by any fixing means such as an adhesive or a double-sided tape. The shape, material, thickness, and the like of the backup material 7 can be the same as or different from those described in the fifth embodiment of the member bonding method of the present invention described above. An air vent hole may be opened in a part of the backup material 7.

(Embodiment 1 of member joining structure)
An example of an embodiment of the member joining structure of the present invention will be described with reference to FIG. In this member joining structure, a sheet-like or plate-like base material 4 is sandwiched between two plate-like members 1 and 5, and both members 1 and 5 are bonded with an adhesive impregnated in the base material 4. is there. This member joining structure can be constructed by any of the above-described member joining methods of the present invention. In this case, the shape, material, thickness, and the like of the member 5 and the base material 4 may be the same as or different from those described in the member bonding method of the present invention. The base material 4 can also be partially arranged in several places instead of the whole surface of one side of the member 5. The members 1 and 5 are not limited to planar plates, but may be three-dimensional.

Explanatory drawing which shows an example of the member joining structure constructed | assembled by the member joining construction method and its construction method of this invention. Explanatory drawing which shows the 1st example of the member joining construction method of this invention. (A) is explanatory drawing which shows the 2nd example of the member joining construction method of this invention, (b) is sectional drawing at the time of notching the spacer contact part of a base material from the bottom to the upper part, (c) is a base material Sectional drawing at the time of vertically penetrating the spacer contact portion. Explanatory drawing which shows the 3rd example of the member joining construction method of this invention. Explanatory drawing which shows the 4th example of the member joining construction method of this invention. (A) is a top view which shows the 5th example of the member joining construction method of this invention, (b) is a front view of (a), (c) is a side view of (a). Explanatory drawing of an example of the conventional member joining construction method. Explanatory drawing of the other example of the conventional member joining construction method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 One member 2 Member joint surface 3 Cut part 4 Base material 5 Other member 6 Spacer 7 Backup material (seal material)
A Existing structure B Adhesive C Reinforcement member D Spacer

Claims (5)

  In the member bonding method for bonding members together with an adhesive, the members are bonded to each other by sandwiching an adhesive-impregnated base material between the members to be bonded.   In the member joining method for joining members together with an adhesive, one of the members to be joined is overlaid with an adhesive-impregnated base material or an adhesive-unimpregnated base material, and in the case of an adhesive-impregnated base material, the base material In the case of a non-adhesive base material, the base material is impregnated with the adhesive, and then the base material is superposed on the base material, or the base material is not soaked with the adhesive. A member joining method characterized in that after overlapping, the unimpregnated base material is impregnated with an adhesive to join both members.   In a member joining method for joining members together with an adhesive, a base material integrated member having an adhesive impregnated base material or an adhesive non-impregnated base material on one side is used as one of the members to be joined. In the case of an impregnated base material, the other member is layered on the base material. In the case of an unimpregnated base material, the adhesive member is impregnated on the base material, and then the other member is superimposed on the base material, or the adhesive agent is added. A member joining method characterized in that, without impregnating, the other member is stacked thereon, and then the unimpregnated base material is impregnated with an adhesive to join both members.   It is a member used in the member joining method that joins members with an adhesive, and a base material or / and a backup material are attached to the joint surface of one member, and the base material has been impregnated with adhesive or not impregnated with adhesive. The joining member characterized by the above-mentioned.   A member joining structure, wherein members are joined to each other with an adhesive-impregnated base material interposed therebetween.

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