JP3162518U - Structural plywood with torso - Google Patents

Abstract

The present invention provides a structural plywood that can be attached to an outer wall in a home without breaking the outer wall of an existing building in a seismic reinforcement work for a building. SOLUTION: A reinforcing sheet made of woven or non-woven fabric such as carbon fiber, aramid fiber or polyester fiber is applied to the entire surface with an adhesive suitable for the material between the surface of the veneer plywood or between the veneer plywood and the veneer plywood. The reinforced veneer plywood 3 is formed by pasting. Further, torso edges 7 and 8 in which holes having a diameter enough to accommodate the heads of the coach screw bolts are opened at appropriate intervals on both side edges and intermediate parts in the longitudinal direction, and reinforced veneer plywood is attached. A structure plywood with a trunk edge is formed by opening a pilot hole for inserting a screw screw bolt in a portion corresponding to a portion immediately below the hole of the trunk edge. [Selection] Figure 4

Description

  The present invention relates to the improvement of structural plywood used for seismic reinforcement work for existing buildings as well as for new construction, for the structure with trunk edges that can reinforce the wall magnification and simplify the work process more than existing structural plywood. It is about plywood.

The Great Hanshin-Awaji Earthquake that occurred in 1995 is a typical example of an earthquake that hit an urban area, and it is said that about 5,000 of the 6,000 people who died were overwhelmed by the collapse of wooden houses, There seems to have been little damage to buildings in accordance with the current Building Standards Law.
However, in Japan, an earthquake-prone country, earthquakes occur frequently at a rate of about once every 5 minutes (including the Earthquake Research Institute of the University of Tokyo). More than 11 million houses have been built at present, and most of these buildings have not yet been renovated and do not meet the new earthquake resistance standards.
The biggest reason that earthquake-resistant repair work does not proceed is that it is convenient to interpret that an urban earthquake such as the Great Hanshin-Awaji Earthquake is once in a lifetime, so if you do not want to spend expensive repair costs Because I think so. The inventor has improved the structural plywood used for seismic reinforcement work, and can provide seismic reinforcement work for existing buildings as well as new construction work at a very low cost. The system was developed to contribute to the creation of a country where people can live with peace of mind as soon as possible.

  As a method of strengthening the earthquake resistance, there is a method of strengthening the earthquake resistance with a bearing wall that uses a brace or a structural plywood alone or in combination between columns, but the seismic reinforcement by bracing removes the outer wall, ceiling or floor Since it is necessary to peel off the material, it is difficult to carry out the construction while staying in a house, and it takes time and labor, and the wage is inevitably high.

  Also, at the site of the current renovation work, after attaching the structural plywood, the carbon fiber, aramid fiber, or SRF method (polyester fiber belts are fixed to the joints such as pillars and walls with adhesive etc. to reinforce. There is a drawback that it takes a long time to attach the body edge after the polyester fiber used in the construction method) is pasted with an adhesive and is dried.

In addition, as a method for increasing the strength of the veneer plywood, a technique for sticking fibers to the veneer plywood has been developed.
For example, particleboard made by hot-pressing veneer plywood or wood chips with a binder is cellulose, so it has high hygroscopicity and tends to be distorted in dimensions, and its bending strength is about half that of veneer plywood. In addition, there are drawbacks such as large irregularities on the surface and lack of smoothness, and as improved inventions there are (1) Japanese Patent Laid-Open No. 9-52316, (2) Japanese Patent Laid-Open No. 9-52317 or (3) Japanese Utility Model Laid-Open No. 5-74805, .

(1) is a hygroscopic material by bonding a woven fabric sheet like glass fiber to the surface of a wood-based plywood such as particle board or veneer plywood, which is formed by hot-pressing wood chips with a binder. In the invention to improve, (2) is different from the woven fabric such as the sheet of (1), and a non-woven fabric made of glass fiber, polyester fiber, polypropylene fiber, etc. is used to heat and press the wood part with a thermosetting resin. Integrated.
However, although both inventions can achieve the purpose of enhancing physical properties and improving surface smoothness by reducing the hygroscopicity of plywood such as solid veneer plywood and particle board, it aims to enhance seismic resistance. The purpose of the invention is different.

  (3) relates to a device intended to reinforce the plywood board, and in order to improve the strength of the plywood board, a carbon fiber cloth-like material was sandwiched between a large number of plywood boards and bonded together in the veneer board manufacturing process. Even if horizontal or vertical force is applied to the plywood with nails or pins, the fibrous part distributes the force to increase the tensile strength and bending strength, and when the plywood is damaged Although it was developed for the purpose of preventing spattering of debris, the carbon fiber is extremely expensive, so it has a high manufacturing cost, and has a drawback that it is excellent in earthquake resistance but cannot be widely spread.

JP-A-9-52316 JP-A-9-52317 Japanese Utility Model 5-74805

In general, the owner of a wooden house is often an individual, and the cost of earthquake-proof repair work is low, and it is hoped that construction can be performed while using a normal life in the building.
However, when adding a seismic wall to a wooden building or installing a brace on an existing wall, or for seismic retrofitting work that fixes the joints of structural materials such as building bases, columns, and beams with hardware, etc. It is necessary to remove or restore the finishing material inside and outside the wall, and a large amount of cost is required for the renovation work. The spread of reinforcement works is hindered.

  The present invention has many earthquake-proof reinforcement works for buildings built before the construction of the new Building Standard Act, and in order to complete it quickly, (1) is excellent in earthquake resistance, and (2) the exterior walls of existing buildings (3) Providing a “plywood for structural structures with a torso” that can be attached to the outer wall, (4) can be attached to the outside wall, and (5) work processes can be simplified compared to the conventional one without breaking. Unlike the case where a sheet-like material such as a woven fabric, non-woven fabric or paper is attached between the surface of the plywood plate or the plywood plate in order to increase the strength of the mere plywood plate as described above, It was made in order to provide structural plywood that can be seismically constructed at low cost, despite improving earthquake resistance and work efficiency.

  The present invention is made by attaching a woven or non-woven fabric such as carbon fiber, aramid fiber or polyester fiber on the entire surface of the veneer plywood or between the veneer plywood and veneer plywood with an adhesive suitable for the material. Adhering to the longitudinal edges of both sides of the upper surface of the structured veneer plywood for structural use with a body edge that has holes with appropriate diameters that can accommodate the heads of the coach screw bolts at appropriate intervals. A pilot hole is formed in a portion of the plywood corresponding to a portion immediately below the hole for inserting the coach screw bolt to prevent the wood from being split. In addition, it is convenient to prepare an appropriate length of the body edge material having a hole for inserting the coach screw bolt as a part because it can be cut to an appropriate length at a construction site and used.

  In general, when installing a seismic wall in an existing wooden building or installing a brace for seismic resistance, the interior is contaminated due to the introduction of materials and the removal of waste materials, etc., but the use of living spaces is restricted. The structural plywood with the rim of this application is capable of external seismic reinforcement work, and is very different from conventional seismic construction in that construction is easy and the burden on consumers is small. Thus, it can be improved in terms of strength and work efficiency compared to the case of using a conventional structural plywood, and can contribute to the improvement of seismic reinforcement strength and promotion of the spread of seismic reinforcement work .

  That is, the structural plywood is pre-bonded at the factory with a reinforcing sheet such as a woven fabric or non-woven fabric such as carbon fiber, aramid fiber or polyester fiber on the surface of the plywood or an intermediate portion between the plywood and the front and back of the plywood. Since it is affixed and integrated on the entire surface with an agent, the tensile strength and bending strength can be enhanced, the effectiveness as a face bearing wall can be strengthened compared to conventional plywood for construction, and the surface of the plywood A sheet with a reinforcing sheet bonded to it has a particularly strong waterproof effect, and at the same time, the periphery of the trunk is high, creating a space inside and strengthening the heat insulation effect. it can.

  In addition, the present invention accommodates the head portion of the coach screw bolt in advance around the edges of both sides in the longitudinal direction of the surface of the reinforced veneer plywood in which the reinforcing sheet is adhered to the entire surface of the veneer plywood with an adhesive. Reinforced veneer plywood is further reinforced by bonding the edges of the holes that are opened at appropriate intervals, and a pilot hole is opened immediately below the hole for inserting the screw screw bolt on the reinforced veneer plywood. Since the bolt is fixed to the pillar or base, it is possible to prevent the veneer plywood from being split when the coach screw bolt is attached or during an earthquake.

  Since the hole for storing the head part of the coach screw bolt is opened in the body edge at an appropriate interval in advance, the head can be completely stored when the coach screw bolt is installed, and the surface of the body edge is Since it is smooth, it does not hinder the attachment of other members.

  As described above, the structural plywood has a reinforcing sheet attached in advance to the entire surface with an adhesive at the factory as described above, and the body edge is bonded and fixed to the edge portion, so the structural plywood is attached at the work site. It has many excellent features such as a great effect in improving work efficiency and greatly contributing to cost reduction.

  It is a perspective view which shows the state which has arrange | positioned the sheet | seat for reinforcement in the upper part of a veneer plywood.   It is a perspective view which shows the state which pinched | interposed the reinforcement sheet | seat between the veneer plywood and the veneer plywood.   It is the perspective view of the trunk edge which opened the hole for coach screw bolt insertion.   It is a perspective view of a structural plywood with a trunk edge.   It is explanatory drawing which shows the state which attached the structural plywood with this-body edge to the outer wall of the building with the coach screw volt | bolt and the bis | screw.   It is AA sectional drawing.

  The present invention further provides a veneer plywood around the upper surface of a reinforced veneer plywood in which the surface of the veneer plywood or a woven or non-woven fabric for reinforcement such as carbon fiber is adhered between the veneer plywood and the veneer plywood with an adhesive. For the purpose of strengthening and improving workability, the edge of the cylinder screw bolt hole is bonded at an appropriate interval, and the reinforced veneer plywood is directly below the hole for the screw screw bolt insertion hole. A hole was opened.

Embodiments will be described in detail below with reference to the drawings.
The present invention is, for example, a reinforced veneer plywood 3 in which a reinforcing sheet 2 such as carbon fiber, aramid fiber or polyester fiber is bonded to the entire surface of a 910 mm × 1820 mm veneer plywood 1 with an adhesive suitable for the material. 18 mm × 50 mm × 1820 mm trunk edge 7 having holes 6 with a diameter of 30 mm, which can be accommodated in advance in the longitudinal direction on both side edges of the coach screw bolt 4 and can be tightened with a power tool. In addition, the same edge 8 of 18 mm × 100 mm × 1820 mm is bonded to the center portion, and the portion corresponding to the portion directly below the hole 6 of the trunk edges 7 and 8 bonded to the reinforced veneer plywood 3 is used for inserting a coach screw bolt. A structure ply a having a trunk edge is formed by opening a pilot hole 9 having a diameter of 10 mm.

  In addition, if the said trunk edge 7 and the trunk edge 8 are prepared separately as components, since it can be used as needed at a construction site, it is convenient.

  For example, a reinforced veneer in which a reinforcing sheet 2 such as carbon fiber, aramid fiber, or polyester fiber is bonded to the entire surface between two 910 × 1820 mm veneer plywoods 1 and 1 ′ with an adhesive suitable for the material. The plywood 3 is bonded to the case edge 7 and the case edge 8 in the same manner as in the first embodiment, and the reinforced veneer plywood 3 is provided with a pilot hole 9 for inserting a screw screw bolt to form a structure ply a 'with a case edge. To do.

  Needless to say, the number of veneer plywood 1 or 1 'and the number of reinforcing sheets 2 interposed between them can be appropriately changed according to the purpose.

    The size of the veneer plywood is half the width of the veneer plywood 1 or 1 ′ described in the first and second embodiments, that is, 450 mm × 1820 mm. The reinforced veneer plywood 3 is provided with a body edge 7 of 18 mm × 50 mm. In addition to bonding, a lower hole 9 for inserting a coach screw bolt is opened in a portion corresponding to the portion directly below the hole 6 of the trunk edge 7 to constitute a structural plywood b with a trunk edge.

The structure plywood a or a ′ with a torso of Example 1 and Example 2 is used for a three-scale wall, two of these are combined for a six-scale wall, and the structure for the three-scale wall is used for a 4.5-scale wall A combination plywood a or a ′ for use and a structural plywood b with a body edge described in Example 3 are used in combination.
Fig. 5 (a) shows a state in which the structural plywood a with a torso is attached to a 3-wall, and Fig. 5 (b) shows a combination of the structural ply-a with a torso and a structural plywood b with a torso, and is attached to a 4.5-wall. Indicates the state.

FIG. 6 is a cross-sectional view taken along line AA in FIG.
In FIG. 6, there are existing wall waterproof paper 12, existing wood ply 13, and existing mortar 14 on the pillar 10 and the interposition pillar 11, and the structural plywood a or a ′ with a torso of the present invention is arranged thereon, A column 10 using a coach screw bolt 4 in a hole 6 opened in the trunk edge 7, a trunk edge 8 and a prepared hole 9 in a structural plywood a or a 'with a trunk edge, and a screw 15 in another suitable place, A state of being firmly fixed to the stud 11, the base 16, the beam 17, and the like is shown.

From the survey results that many of the houses collapsed in the Great Hanshin-Awaji Earthquake were houses that were built before the current Building Standards Act, it is necessary to rebuild them to houses that meet the current earthquake resistance standards as soon as possible. The current situation is that the renovation work has not progressed for many reasons.
The inventor has improved the strength and workability of structural plywood used for seismic reinforcement work, and can provide seismic reinforcement work for existing buildings as well as new construction work at a very low cost. We are confident that we can establish a system that allows us to easily request repair work and contribute to the creation of a country where people can live with peace of mind.

DESCRIPTION OF SYMBOLS 1, 1 'veneer plywood 2 Reinforcement sheet 3 Reinforcement veneer plywood which adhered the reinforcement sheet 4 Coach screw bolt 5 Coach screw bolt head 6 Hole for coach screw bolt established in trunk edge 7 Trunk edge for pillar 8 Trunk edge for stud 9 9 Pilot hole opened in reinforced veneer plywood Pillar 11 Spatula 12 Existing waterproof paper 13 Existing lumber 14 Existing mortar 15 Screw 16 Base 17 Beams a, a 'Structural plywood with 3 rims width b 1.5-inch structural plywood with torso

Claims (3)

  Both sides in the longitudinal direction of reinforced veneer plywood in which a reinforcing sheet made of woven or non-woven fabric such as carbon fiber, aramid fiber or polyester fiber is bonded to the entire surface with an adhesive suitable for the material. In addition, to the intermediate portion, a hole having a width corresponding to each and a hole that can accommodate the head of the coach screw bolt in advance is bonded at an appropriate interval, and the hole of the corresponding barrel edge of the reinforced veneer plywood is bonded. A structural plywood with a torso rim, characterized in that a pilot hole for inserting a coach screw bolt is opened in a portion corresponding to a portion directly below.   A reinforcing sheet made of woven or non-woven fabric such as carbon fiber, aramid fiber or polyester fiber is placed between the veneer plywood and the length of the reinforced veneer plywood pasted with an adhesive suitable for the material. Adhering to the side edges and the middle part of the direction with a width corresponding to each, a diameter of a hole that can accommodate the head of the coach screw bolt in advance at an appropriate interval, and a reinforced veneer plywood A structural plywood with a trunk edge, characterized in that a pilot hole for inserting a screw screw bolt is formed in a portion corresponding to a position directly below the hole at the trunk edge.   A reinforcing sheet made of woven or non-woven fabric such as carbon fiber, aramid fiber or polyester fiber is disposed on the veneer plywood whose width is half the width of the veneer plywood according to claim 1 and claim 2, and conforms to the material Bonded to the edges of the longitudinal sides of the reinforced veneer plywood pasted on the entire surface with an adhesive, the body edges were previously opened with a hole with a diameter sufficient to accommodate the head of the coach screw bolt, and A structural plywood with a trunk edge, characterized in that a pilot hole for inserting a coach screw bolt is formed in a portion corresponding to the hole just below the hole of the trunk edge of a reinforced veneer plywood.

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