JP3912743B2 - Reinforced structure of building or building - Google Patents

Description

【００６７】
【発明の効果】
本発明補強構造は、一方の構造材の途中から他方の構造材の途中に補強部材としてばね鋼が架け渡されて構造材に固定されている為、ばね鋼からなる補強部材は復元力が強く、強風又は地震のような応力が加わる場合に、水平応力の強弱による変位に対し、揺れに対する干渉作用（オイルダンパー或いはすべり摩擦抵抗材の場合)を有していることで、その変形が素早く元に戻るので、建築物の揺れも速やかに収まると共に、建築物にゆがみが起こりにくく、建築物の揺れを小さくできると共に、建築物の揺れを吸収して早期に揺れを小さくすることができる。
【００６８】
更に本発明補強構造は、ばね鋼の動きを拘束する手段を備えている為、RC造り或いはSRC造り等の木造、鉄骨造りなどと比較して建物に許容される仕口変形量が小さい場合であっても、補強部材によるエネルギー吸収が十分可能であり、制振構造を用いて耐震性能を高めた建築物の補強構造が得られる。
【図面の簡単な説明】
【図１】 本発明の補強構造を設ける部位を示す説明図である。
【図２】 本発明の補強構造を設ける部位を示す説明図である。
【図３】 本発明の補強構造の1例を示し、(a)は補強構造の側面図、(b)は補強構造の正面側から見た(a)のA-A線断面図である。
【図４】 図3（a)、(b)の重ね板ばねを示し、(a)は側面図、(b)は子板ばね側から見た正面図、(c)は(a)の端部付近の外観を示す要部拡大図、(d)は(c)のクリップを示す端面図、(e)は(c)に示すエネルギー吸収剤の平面図である。
【図５】 重ね板ばね、オイルダンパー、充填材、側面板等からなる補強構造の分解斜視図である。
【図６】 補強部材取り付けに用いるボルトユニットを示し、(a)は正面図であり、(b)は構造材に取りつけた状態を示す説明図である。
【図７】 従来の補強構造の一例を示す斜視図である。
【符号の説明】
１ 補強部材
2a,2b 合成樹脂発泡体
3 オイルダンパー
4 充填材
5 重ね板ばね
6 ボルトユニット
7 側面材
11 梁(一方の構造材)
12 柱(他方の構造材)
13 土台
14 基礎
15 水平方向の構造材A
16 水平方向の構造材B
51 親板ばね
52 子板ばね
53 クリップ
54 親板ばねの端部
55 ボルト用孔
56 溝
57,58 すべり摩擦抵抗材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing structure for a building or a building and a reinforcing material used therefor, and more particularly, to a reinforcing structure for a building or a building having enhanced vibration resistance and earthquake resistance. Especially, it is optimally used for buildings such as RC or SRC.
[0002]
[Prior art]
Structural materials such as pillars, studs, foundations, beams and trunk differences in wooden frame buildings, structural materials such as square members in wooden frame wall construction buildings, and structural materials such as steel frames in steel buildings, among these structural materials A reinforcing structure is known in which a reinforcing material such as braces or braces is bridged between two structural materials that are in contact with each other. As a specific such structure, for example, as shown in FIG. 7, a wooden or metal reinforcing member 103 such as a fired material is slanted from the middle of one structural material 101 to the middle of the other structural material 102. A reinforcement structure is known in which both ends are fixed to the structural members 101 and 102 to reinforce the building.
[0003]
A building or a building having the above-mentioned reinforcing structure (hereinafter simply referred to as a building. In the present invention, the term “building” includes a meaning of a building unless otherwise specified) has no reinforcing member. The earthquake resistance is improved compared to the structure of the building. In addition, in such a reinforcing structure, the applicant of the present application has proposed Japanese Patent Application No. 2001-287022 and Japanese Patent Application No. 2001-287022 in order to further improve the seismic performance by using the damping structure.
[0004]
Specifically, the reinforcing structure according to the invention of the above application is formed by fixing a reinforcing member made of spring steel from the middle of one structural material (structural material A) to the middle of the other structural material (structural material B). Or a structure in which a synthetic resin foam is fixed in a compressed state in a space formed by the structural material A, the structural material B, and the reinforcing member. Such a structure is a kind of flexible seismic reinforcement structure.
[0005]
According to the above invention, in a wooden or steel structure building, even when a large displacement occurs, energy due to shaking can be absorbed well, torsional deformation and the like can be reduced, and durability can be improved.
[0006]
[Problems to be solved by the invention]
By the way, in RC construction or SRC construction, compared to wooden construction, steel construction, etc., the amount of joint deformation allowed in a building is small. That is, in RC construction or SRC construction, even if the displacement such as shaking is small, the building will crack. Therefore, the reinforcing structure in such a case is required to work effectively even when the amount of deformation of the joint is small.
[0007]
In the conventional reinforcing structure, when a displacement such as shaking is large, the reinforcing member follows and can absorb the energy. However, it has been found that there is a problem that energy absorption by the conventional reinforcing member is insufficient when the allowable displacement must be designed to be small, such as in RC or SRC.
[0008]
The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and uses a damping structure even when the amount of deformation of a joint such as an RC structure or an SRC structure is small. An object of the present invention is to provide a building or a reinforcing structure for a building that can improve seismic performance.
[0009]
[Means for Solving the Problems]
  The present invention
(1)In two structural materials that touch or cross each otherSpring steel is laid as a reinforcing member from the middle of one structural material to the middle of the other structural material and fixed to the structural material, and means for restraining the movement of the spring steel is provided, and the reinforcing member is structured. Installed between materialsIn the building or the reinforcing structure of a building, the means for restraining the movement of the spring steel is any one of the following [1] to [6] or a combination of any of the above.It is characterized by,Reinforced structure of buildings or structures,
[1] Attach an oil damper between the structural members spanned by spring steel
[2] A spring steel is formed by laminating a plurality of leaf springs and pressed by a fixing member, and a sliding friction resistance material is provided between the leaf springs.
[3] A spring leaf is a lap leaf spring composed of a parent leaf spring that is bridged and fixed between the structural members, and a child leaf spring that slides relative to the parent leaf spring, A fixing member that slidably presses the parent leaf spring and the child leaf spring and a sliding friction resistance material provided between the fixing member and the overlap leaf spring are provided.
[4] Fill the space formed by the spring steel with each structural material spanning the spring steel.
[5] The outer surface side of the spring steel is covered with a mesh body, and the mesh body is integrated with the spring steel using an impregnating material.
[6] A side plate is joined and integrated to at least one of both sides in the short direction of the spring steel that is fixed to the two structural members at both ends in the longitudinal direction and curves to the front and back surfaces.
(2) When the space side formed by spring steel and structural material is the back side of the spring steel and the direction opposite to the space side is the surface side of the spring steel, a synthetic resin foam is laminated on at least the surface side of the spring steel. With thatMoreThe building or the reinforcing structure of the building according to the above (1), which restrains the movement of the spring steel,
Is a summary.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the reinforcing structure of a building according to the present invention has a structure in which a beam 11 as one structural material (structural material A) and a column 12 as the other structural material (structural material B) intersect. The spring steel 1 is bridged between the middle of the column 12 and the middle of the column 12, and both ends of the spring steel 1 are respectively fixed to the beam 11 and the column 12 using a fixing tool such as a bolt, A means (not shown in FIG. 1) for restraining the movement of the spring steel 1 is provided, and a reinforcing member including the spring steel 1 is attached between the structural materials A and B.
[0011]
The reinforcing structure of the present invention is a structural material such as a steel structure, a steel frame in a reinforced steel structure, a concrete column, a concrete beam, a structural material such as a column, a stud, a foundation, a beam, and a trunk difference in a wooden framed building. It is provided in a structural material such as a square member in a wooden frame wall construction method.
[0012]
Specifically, the place where the structural members A and B are overlaid with the spring steel 1 and the reinforcing structure is provided, as shown in FIG. 1, is the place where the beam 11 and the column 12 abut or cross each other, or on the building foundation 14 For example, a place where the horizontal structure material and the vertical structure material contact or cross each other, such as a place where the base 13 and the pillar 12 are provided in contact with each other. Further, as shown in FIG. 2, the horizontal structural member A (beam) 15 and the horizontal structural member B (beam) 16 may contact or cross each other. In short, the reinforcing structure can be formed at any location where the structural members abut or cross each other.
[0013]
  In the present invention, when the structural material A and the structural material B are referred to, the horizontal structural material and the horizontal structural material, or the horizontal structural material and the vertical structural material are in contact with each other. It means two structural materials, that is, a crossing part or a crossing part. In addition, as is apparent from FIGS. 1 and 2, the middle of the structural material is between the point of intersection between one structural member and the other structural member and the other point of intersection.Structural materialThe middle position in the longitudinal direction. In other words, it means that the part where the structural material is in contact (intersect) is in the middle of another part (intersect). In this case, it is common that the structural materials A and B are crossed so as to be orthogonal to each other, or are in contact with each other at a right angle. It is not limited to right angles only.
[0014]
As means for restraining the movement of the spring steel 1, the following means (a) to (f) can be used. These means may be used alone or may be constituted by appropriately combining a plurality of each means.
(a) A synthetic resin foam is laminated on the front surface and / or back surface of the spring steel.
(b) Install an oil damper between the structural members that span the spring steel.
(c) When a spring steel is used in which a plurality of leaf springs are overlapped and pressed with a fixing member, between the portion where the fixing member and the leaf spring are in contact and / or between the leaf springs. Provide a sliding friction resistance material.
(d) Filling a space formed by the spring steel with each structural material spanning the spring steel.
(e) The outer surface side of the spring steel is covered with a mesh body, and the mesh body is integrated with the spring steel using an impregnation material.
(f) A side plate is joined and integrated on the side surface of the spring steel.
[0015]
Hereinafter, various means for restraining the movement of the spring steel will be described with reference to the drawings. 3 (a) and 3 (b) show an example of the reinforcing structure of the present invention.
In the reinforcing structure shown in FIG. 3, a laminated leaf spring 5 is spanned as a spring steel between structural members A and B composed of a beam 11 and a column 12, and is fixed between the beam 11 and the column 12, and the laminated leaf spring 5 The synthetic resin foams 2a and 2b are laminated on the front surface side and the back surface side, and the oil damper 3 is attached between the beam 11 and the column 12, and is surrounded by the overlap leaf spring 5, the beam 11 and the column 12. The triangular space is filled with the filler 4. The overlap leaf spring 5 is fixed between the beam 11 and the column 12 using a bolt unit 6 for attaching a reinforcing member.
[0016]
In this embodiment, the synthetic resin foam is laminated on both the front surface side and the back surface side of the laminated leaf spring 5, but by laminating the synthetic resin foam at least on the front surface side of the spring steel, It is preferable to restrain the movement.
[0017]
In the present invention, “the surface side of spring steel” means the opposite side of the space formed by the spring steel and the structural material, and “the back side of spring steel” means the space formed by the spring steel and the structural material. Say the side. That is, the “front and back surfaces” of the spring steel 1 (lap spring 5) are the front and back surfaces of the stack spring 5 in the bending direction. Incidentally, the synthetic resin foam 2a on the upper side in the drawing of the laminated leaf spring 5 shown in FIG. 3 (b) is a synthetic resin foam laminated on the “surface side of the spring steel”, and the laminated leaf spring 5 shown in FIG. The lower synthetic resin foam 2b in the figure is a synthetic resin foam laminated on the “back side of spring steel”.
[0018]
Further, the “side surface of the spring steel” means both sides in the width direction (short direction) of the spring steel 1, and in the laminated leaf spring 5 shown in FIG. 3 (b), the laminated leaf spring 5 shown as the left and right sides in the drawing. It is the both sides.
[0019]
In the reinforcing structure shown in FIGS. 3 (a) and 3 (b), the laminated leaf spring 5 is one in which the leaf spring is formed in a curved shape in advance. This bend is such that the triangular space formed by the structural materials A and B and the laminated leaf spring 5 is narrowed, that is, bends toward the corner 17 that is the intersection of the beam 11 and the column 12. State. Further, when the plate spring is formed in a curved shape by using the flat plate spring 5 having no curve, the plate spring can be formed in a curved shape so that a triangular space is narrowed during attachment.
[0020]
When the spring steel 1 has a curved shape and is fixed to the structural material so that the triangular space formed by the structural materials A and B and the spring steel 1 is narrowed, the reinforcing effect becomes very large. Further, when the arch-shaped curve is formed, the reinforcing effect is further improved.
[0021]
As shown in FIG. 3, the laminated leaf spring 5 is attached such that the width direction (short direction) coincides with the width direction of the structural material and the longitudinal direction coincides with the longitudinal direction of the structural materials A and B. By being attached in this way, the force to suppress the deformation of the leaf spring and the force to return to the original shape effectively relieve stress such as vertical vibration and horizontal vibration on the structural materials A and B. And can absorb.
[0022]
  As shown in FIGS. 3 (a) and 3 (b), the synthetic resin foams 2a and 2b are front and rear in the direction in which the laminated leaf spring 5 is curved,IeThe beam 11 and the column 12 of the laminated leaf spring 5 contact each otherCorner 17And the opposite direction. The synthetic resin foams 2a and 2b function as a resistance force against the bending of the laminated leaf spring, thereby restricting the movement of the leaf spring. In particular, the synthetic resin foam 2a laminated on the surface side of the laminated leaf spring 5 can effectively absorb the energy that the laminated leaf spring 5 tries to compress by its compression deformation.
[0023]
3 (a) and 3 (b) show a mode in which the synthetic resin foam is laminated on both the front and back surfaces of the spring steel 1, the synthetic resin foam laminated on the spring steel in the present invention is a spring steel Although it may be laminated | stacked only on either the surface side or the back surface side of spring steel, it is preferable to laminate | stack on the surface side of spring steel.
[0024]
It is preferable that the synthetic resin foams 2a and 2b and the laminated leaf spring 5 or the synthetic resin foams 2a and 2b and the structural material A and the structural material B are bonded. At that time, an adhesive is usually used. However, when the laminated leaf spring 5 and the synthetic resin foams 2a and 2b can be thermally bonded, the thermal adhesive resin or the thermal adhesive resin is used. It is also possible to directly bond without any problem. In addition, when a reinforcing member formed by previously bonding the synthetic resin foams 2a and 2b and the leaf spring is used, the attachment work between the structural materials A and B is easy.
[0025]
The following synthetic resins are used as the resin for forming the synthetic resin foams 2a and 2b. Styrene homopolymer resin, styrene copolymer resin produced from styrene and other monomers, styrene homopolymer resin or / and mixture of styrene copolymer resin and styrene-butadiene block copolymer A rubber-modified styrene resin (impact polystyrene) obtained by polymerizing a styrene monomer in the presence of a rubber-like polymer, or the above-mentioned styrenic resin and another resin or / and a rubber-like polymer A polystyrene-based resin or polystyrene-based resin composition having a styrene component ratio of 50% by weight or more, such as a mixture of ethylene; an ethylene homopolymer resin, an ethylene copolymer resin produced from ethylene and another monomer, ethylene Homopolymer resin or / and ethylene copolymer resin impregnated with vinyl monomer such as styrene monomer Polyethylene resin or polyethylene resin having an ethylene component ratio of 50% by weight or more, such as a graft-modified ethylene resin obtained by polymerization, or a mixture of the ethylene resin and other resins or / and rubber-like polymers Composition: propylene homopolymer resin, propylene copolymer resin produced from propylene and other monomers, propylene homopolymer resin or / and vinyl monomer such as styrene monomer in propylene copolymer resin A polypropylene-based resin having a propylene component ratio of 50% by weight or more, such as a graft-modified propylene-based resin obtained by impregnating and polymerizing, or a mixture of the above-mentioned propylene-based resin and another resin or / and a rubber-like polymer Or polypropylene resin composition; thermoplastic polyester resin; polycarbonate resin; polyamide Resin; polyphenylene ether resin; or a mixture of two or more of the above-described resins.
[0026]
As shown in FIG. 3 (a), the oil damper 3 is located between the beam 11 and the column 12 at a position between the structural materials A and B in the direction of the curved radius of the laminated leaf spring 5 (the surface side of the spring steel). Installed. The oil damper 3 assists energy absorption by the laminated leaf spring 5 and also has a function of adjusting the speed of the vibration and swaying periods of the building. When the oil damper 3 is attached, a speed difference is generated in vibration and vibration acting on the joint (joined portion). As a result, an interference action acts on the vibration and shaking directions of the structural members, and the vibration and shaking of the building are reduced. Also, the sliding action interference material 57 and 58 of the clip 53 used for the laminated leaf spring 5 to be described later can provide the same interference action in the shaking direction as described above.
[0027]
The oil damper 3 has a piston structure similar to a shock absorber or the like widely used for vehicles. The piston-structured oil damper is the same structure as a water gun or syringe, and the oil inside the damper flows due to external forces such as vibration, and its fluid resistance acts as a damping force that absorbs the shaking of the building, and a damping characteristic depending on the speed Indicates. This type of oil damper exhibits a damping force corresponding to the amplitude from a small amplitude to a large amplitude as a speed-dependent damping mechanism. By assuming a damping force proportional to speed, the performance can be set in the form of a damping constant, and the effect can be grasped relatively easily through the response spectrum.
[0028]
  As shown in FIGS. 4 (a) and 4 (b), the leaf spring 5 is a clip that is a fixing member in the vicinity of both ends in the longitudinal direction of the child leaf spring 52. 53 is attached and superposed leaf spring 52 andParent leaf spring 51Are integrally formed by sandwiching them with a clip 53.
[0029]
  Also, as shown in FIGS. 4 (a) and 4 (b), the outer side in the longitudinal direction from the portion sandwiched by the clip 53 of the main leaf spring 51 is formed as a fixing portion 54 for fixing the laminated leaf spring 5 to the structural material. Has been. As shown in Figure 4 (b)Fixed part 54Are formed in a flat plate shape, and are provided with bolt holes 55 and the like for inserting bolts provided on the structural material side or the like when the reinforcing member is attached.
[0030]
In order to sandwich and clamp the leaf spring 5 with the clip 53, as shown in FIG. 4 (b), the rivet 60 is used to insert the rivet into the through-hole provided in the clip 53 provided on the slave plate spring side. Press through 60 to restrain and fix the leaf springs.
[0031]
The leaf springs such as the parent leaf spring 51 and the child leaf spring 52 used for the overlap leaf spring 5 are preferably made of metal because they are lightweight and can provide high strength. The metal leaf spring can directly heat-bond a synthetic resin foam made of polypropylene resin to the leaf spring. Each leaf spring may be made of reinforced plastic. The spring steel used in the present invention can be used without limitation as long as it can be used as a reinforcing member even if it is other than the above-described laminated leaf spring.
[0032]
Moreover, the steel materials prescribed | regulated to JIS G4801 can be used for spring steels, such as a leaf | plate spring. Spring steel, such as leaf springs, has a strong restoring force, so that its deformation can be quickly restored to displacement due to the strength of horizontal stress, so that the vibrations converge on the building or building, making it difficult to cause distortion. Improve durability. In particular, when a leaf spring is used as the spring steel, it can be a spring having a strong force for its thickness, and a laminated leaf spring formed by stacking a plurality of leaf springs can cope with a large stress as a reinforcing member.
[0033]
  The overlapping leaf spring 5 can be the same as the parent leaf spring 51, and a plurality of types of full length plates or child spring plates having different spring forces can be prepared. Then, depending on the degree of reinforcement of the building,Parent leaf spring 51 InSince a full length plate or a child spring plate having an arbitrary spring force can be combined, it is possible to reduce the number of parts.
[0034]
As shown in FIGS. 4 (c) and 4 (d), the clip 53 is wound around the stacked leaf springs 51 and 52, and the wound ends are separated to form a groove 56, which is formed into a cover metal shape. ing. Further, as shown in FIG. 4 (d), a sliding friction resistance material 57 is attached to the upper inner surface and the side inner surface of the clip, which are the surfaces in contact with the parent plate spring 51 on the inner surface side of the clip 53.
[0035]
Further, as shown in FIG. 4 (c), a sliding friction resistance material 58 is attached to a portion where the main plate spring 51 and the sub plate spring 52 are in contact with each other where the clip 53 is attached. As shown in FIG. 4 (e), this sliding friction resistance material 58 is formed in an H shape as a planar shape, and is provided with notches 59 at both ends, into which the clip 53 fits, and is slightly wider than the leaf spring. Is formed.
[0036]
The sliding friction resistance material 58 is fixed to either of the leaf springs by means such as adhesion so that sliding friction resistance is reliably generated between the parent leaf spring 51 and the child leaf spring 52. It is preferable not to move when sliding. Although not particularly illustrated, the sliding friction resistance material can be attached to any portion where the main plate spring 51 and the sub plate spring are in contact with each other other than the portion where the clip 53 is attached.
[0037]
The sliding friction resistance members 57 and 58 are made of a material having a vibration absorption effect or a friction resistance effect in order to reduce energy applied by the two leaf springs. Examples of such sliding friction resistance materials include plate-like or spherical rubber, soft iron, copper, aluminum, and foam metal.
[0038]
Since the child leaf spring 52 is attached to the parent leaf spring 51 with both ends being clamped by the clips 53, both ends of the child leaf spring 52 are slidable along the parent leaf spring 51. This improves the spring efficiency and suppresses free vibration.
[0039]
The laminated leaf spring 5 having a structure in which the child leaf spring 52 is slidably movable receives the first small deformation force by the parent leaf spring 51 when the building is deformed, and the subsequent large deformation is caused by the parent leaf spring 51 and the child spring. It can be received by both leaf springs 52. As a result, it is possible to deal with small to large deformations of buildings with relatively inexpensive springs.
[0040]
Further, the sliding friction resistance material provided on the clip 53 of the laminated leaf spring increases the friction between the parent leaf spring 51 and the child leaf spring 52, which are two leaf springs constituting the laminated leaf spring 5, The movement when the leaf springs slide can be further restrained, and the energy applied to the spring can be absorbed well. Further, the sliding friction resistance material can absorb small vibrations applied to the leaf spring.
[0041]
As shown in FIG. 3 (a), a material that can be plastically deformed as the filler 4 is formed between the structural members around which the laminated leaf spring 5 is bridged, that is, the beam 11, the column 12, and the laminated leaf spring 5. The triangular space formed by being enclosed is filled, and the movement of the overlap leaf spring 5 is constrained. In the embodiment shown in FIGS. 3 (a) and 3 (b), the filler 4 is filled so as to fill all the triangular spaces, but if it is possible to restrain the movement of the overlapping leaf spring 5, The space may be filled without completely filling, and there may be a space in the triangular space. In short, the filling state of the filler is not particularly limited as long as it can absorb energy by plastic deformation of the filler when subjected to a compression action between the structural materials.
[0042]
As the material for filling the triangular space as the filler 4, a material having a viscoelasticity that can be deformed when a certain level of stress is applied, such as a synthetic resin, a synthetic resin foam, rubber, or a soft metal, is used. It is done. The filler 4 is effective in absorbing energy when the reinforcing structure is subjected to compressive deformation.
[0043]
3B, the thickness (width) of the filler 4 is formed so as to be flush with the width direction of the structural material such as the beam 11 or the column 12 when fixed between the structural materials. However, it can be appropriately changed according to the structure of the building. As the synthetic resin of the synthetic resin foam used as the filler 4, the resin exemplified in the description of the synthetic resin foam laminated on the front and back of the above-described laminated leaf spring can be used.
[0044]
When a synthetic resin foam or the like is used as the filler 4, it can be attached to the space in a compressed state. The thickness of the synthetic resin foam used as the filler 4 is preferably 20 to 100% with respect to the thickness of the structural material to be attached, and preferably 50 to 200 mm.
[0045]
If the synthetic resin foam is fixed in a triangular shape in a compressed state, it will reduce the shaking of the building when the building is stressed, and it will shake early by absorbing the shaking of the building. The effect of reducing the thickness can be satisfactorily exhibited.
[0046]
In order to attach a synthetic resin foam in a triangular space in a compressed state, the synthetic resin foam that can be compressed and deformed is molded slightly larger than the area of the space to be attached, and the synthetic resin foam is fixed when fixed. The synthetic resin foam can be compressed and deformed and fixed by pressing the laminated leaf spring 5 while placing the body in the triangular space.
[0047]
As the synthetic resin foam that can be compressed and deformed, the compressive stress at 5% compression is preferably 2000 kPa or less, and more preferably 1500 kPa or less. The lower limit of the compressive stress at 5% compression is preferably 50 kPa or more, and more preferably 80 kPa or more. If the compressive stress at the time of 5% compression becomes too small, there is a risk that the function of reducing the vibration and the function of absorbing the vibration and reducing the vibration early will be poor when the building is under stress. .
[0048]
In addition, when the synthetic resin foam is fixed in a triangular space in a compressed state, the compression state of the synthetic resin foam is 12% or less because the compressed state is maintained over a long period of time. It is preferably 10% or less.
[0049]
The compression set of the synthetic resin foam is a value measured according to JIS K 6767-1977. However, the compression speed when compressing 25% of the specimen thickness is 10 mm / min. The compression stress at the time of 5% compression is 5% compression from the compression stress-strain curve obtained by compressing the test piece by 10% of the initial thickness according to the compression hardness measurement method in JIS K 6767-1977. It is a reading of the compressive stress of time.
[0050]
Polypropylene resin foam (including polypropylene resin composition) is lightweight and can easily be compressed and deformed because the compression stress and compression set at the time of 5% compression are within the specified numerical range. It is one of the most preferable as a synthetic resin foam. Polypropylene-based resin foams having compression stress and compression set at the time of 5% compression within the above specified range are, for example, foaming ratio ( = Density of base resin / apparent density of foam) is 5 to 30 times.
[0051]
When the filler 4 is filled in the triangular space, the vibration can be reduced when stress is applied to the building, and the cushioning property of the filler absorbs the shaking of the building and quickly shakes it. It works to make it smaller. In addition, when stress is applied to the portions of the structural material that are in contact with each other, the load applied to the laminated leaf spring 5 that is a reinforcing member is reduced due to the cushioning property of the filler 4. Further, the filler 4 can further reduce torsional deformation and the like with respect to the structural material.
[0052]
Further, as shown in FIG. 5, a side plate such as a metal plate can be joined and integrated to the side surface of the reinforcing member including the spring steel 1 to reinforce the entire structural material and simultaneously restrain the movement of the spring steel 1. In this case, the side plate may be attached only to either the left or right side of the reinforcing member surface, or may be attached to both the left and right side surfaces. Further, the side plate 7 may be attached so as to be fixed and integrated with a part of the structural material A and / or the structural material B, or only with the reinforcing member so as not to be fixed to the structural material. Also good. As the side plate, a metal plate such as iron, copper, or stainless steel plate is used.
[0053]
As shown in FIG. 5, a reinforcing member is formed by previously joining and integrating the constituent members such as the oil damper 3, the filler 4 made of synthetic resin foam, the laminated leaf spring 5, and the side plate 7, The reinforcing member can be attached between the predetermined structural materials A and B. In addition, each of these constituent members may be attached between the structural materials on site to form a reinforcing structure between the structural materials.
[0054]
In order to attach the reinforcing member between the structural materials A and B, for example, a bolt unit 6 for attaching the reinforcing member as shown in FIG. 6 (a) can be used. Although not particularly illustrated, a hole (insertion hole) for inserting a bolt or the like may be formed on the structural material side, and the bolt or the like may be inserted and fixed thereto from the reinforcing member side.
[0055]
In addition, when fixing a reinforcing member or the like to the structural material, the structural material (in the through hole provided in the structural material for passing a bolt or the like) is filled with an adhesive so that the structural material and the fixture are bonded and integrated. It is preferable to be bonded and integrated in such a manner, so that a decrease in strength due to the provision of a hole for passing a fixture through the structural material can be prevented as much as possible.
[0056]
As shown in FIG. 6 (a), the bolt unit 6 includes an attaching portion 64, two bolt portions 61 and 62, and a through hole 63. As shown in FIG. 2B, the bolt unit 6 is joined and integrated to a structural material such as a column 12 by a welding member 65 or the like. At this time, if a bolt or the like is projected in advance on the column 12, the unit 6 can be firmly fixed by fitting the bolt into the through hole 63 of the bolt unit 6 and fastening a nut or the like. .
[0057]
When existing structural members such as reinforcing bars or steel frames or beams are used as a building, a steel plate is wound around these structural materials A and B and a reinforcing steel plate is attached. Then, a bolt unit 6 as shown in FIG. 6 (a) is welded to the reinforcing steel plates attached to the structural materials A and B. Then, the bolts 61, 62, etc. of this bolt unit 6 are inserted into the bolt holes 55 provided in the overlap plate spring 5 of the reinforcing member, and the tips of the bolts 61, 62, etc. coming out of the bolt holes are fastened with nuts, etc. And fix. Further, as shown in FIG. 5, the oil damper 3 is also provided with fixing portions 30 at both ends, the fixing portion 30 is provided with bolt holes 31, and the bolt holes 61, 62 of the bolt unit 6 are inserted into the bolt holes 31. And can be fastened and fixed with a nut.
[0058]
Further, the outer surface of a member (reinforcing member) constituting a reinforcing structure composed of the oil damper 3, the filler 4, the laminated leaf spring 5, the side plate 7 and the like is made of a net-like body such as a carbon fiber sheet or a glass fiber sheet. The mesh body can be integrated with the reinforcing member by using an impregnating material such as mortar and the like, and the movement of the laminated leaf spring can be restricted.
[0059]
When the reinforcing structure is constrained using such a net and impregnating material, components such as the oil damper 3, the filler 4, the laminated leaf spring 5, and the side plate 7 are integrated in advance as shown in FIG. The periphery of the outer surface is covered with a mesh, fixed with an impregnating material such as a synthetic resin, and a reinforcing member is formed in a unit shape in advance. Can be installed in between. When comprised in this way, it is possible to manufacture a reinforcement member unit in other places, such as a factory, beforehand, and there exists an advantage which can perform attachment work on the spot very easily.
[0060]
In addition, after attaching each member between the structural material A and the structural material B on site, after winding the mesh body from the outer surface side including the structural materials A and B, the structural material A and the structural material B and the reinforcing structure The whole may be constrained by applying an impregnating material so as to be integrated. In this case, since the structural materials A and B are integrally restrained, it is possible to configure a reinforcing structure with further excellent strength.
[0061]
The reinforcing structure of the present invention can be attached between the structural members in the wall so that the reinforcing structure is covered with the wall plate and cannot be directly seen from the outside.
[0062]
When the reinforcing structure of the present invention is provided between structural members that run in the horizontal direction of a building, an effect of improving resistance to rolling can be obtained. Further, when the reinforcing structure is provided between the structural material that runs in the horizontal direction of the building and the structural material that runs in the vertical direction, resistance to roll and pitch is increased. For this reason, the reinforcing structure of the present invention is preferably provided between the structural materials that run in the horizontal direction and between the structural material that runs in the horizontal direction and the structural material that runs in the vertical direction.
[0063]
[Action]
Table 1 shows the energy absorption mechanism of the reinforcing structure of the embodiment shown in FIG.
Table 1 shows how each component functions in the state where the reinforcing structure is (a) compressed, (b) released from compression, and (c) pulled. That is, as shown in Table 1, when the reinforcing structure is compressed (a), the synthetic resin foam absorbs energy by compressive deformation, the leaf spring stores energy by compressive deformation, and the clip by sliding friction resistance. The oil damper that absorbs energy absorbs energy by the hydraulic pump that receives the shaft displacement, and as a result, the energy absorption increases.
[0064]
Also, (b) in a state released from compression, the synthetic resin foam has repulsive energy (negative energy), the leaf spring has large repellent energy, the clip absorbs energy by sliding friction resistance, The energy is absorbed by the hydraulic pump that receives the shaft displacement. As a result, the repulsive energy (negative energy) of the leaf spring and the synthetic resin foam and the energy difference between the clip and the oil damper work as a small minus.
[0065]
(C) In the pulled state, the synthetic resin foam absorbs little energy, the leaf spring absorbs tensile deformation energy, the clip absorbs energy by sliding friction resistance, and the oil damper receives shaft displacement. The energy is absorbed by the hydraulic pump, and as a result, the energy that the leaf spring extends is moderately absorbed by the clip and the oil damper.
[0066]
[Table 1]

[0067]
【The invention's effect】
In the reinforcing structure of the present invention, since the spring steel is spanned as a reinforcing member from the middle of one structural material to the middle of the other structural material and fixed to the structural material, the reinforcing member made of spring steel has a strong restoring force. When a stress such as strong winds or earthquakes is applied, it has an interference action against shaking (in the case of oil damper or sliding friction resistance material) against the displacement due to the strength of horizontal stress, so that the deformation can be quickly restored. Therefore, the shaking of the building is quickly settled, the building is hardly distorted, the shaking of the building can be reduced, and the shaking of the building can be absorbed to reduce the shaking early.
[0068]
Furthermore, since the reinforcing structure of the present invention is provided with means for restraining the movement of spring steel, it can be used when the amount of joint deformation allowed in the building is small compared to wooden structures such as RC structures or SRC structures, and steel structures. Even if it exists, the energy absorption by a reinforcement member is possible enough, and the reinforcement structure of the building which improved the earthquake resistance using the damping structure is obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a portion where a reinforcing structure of the present invention is provided.
FIG. 2 is an explanatory view showing a portion where a reinforcing structure of the present invention is provided.
FIGS. 3A and 3B show an example of a reinforcing structure of the present invention, in which FIG. 3A is a side view of the reinforcing structure, and FIG. 3B is a cross-sectional view taken along line AA in FIG.
FIGS. 4A and 4B show the stacked leaf springs of FIGS. 3A and 3B, where FIG. 3A is a side view, FIG. 4B is a front view as viewed from the side leaf spring side, and FIG. FIG. 4 is an enlarged view of a main part showing an appearance in the vicinity of the part, (d) is an end view showing the clip of (c), and (e) is a plan view of the energy absorbent shown in (c).
FIG. 5 is an exploded perspective view of a reinforcing structure including a laminated leaf spring, an oil damper, a filler, a side plate, and the like.
6A and 6B show a bolt unit used for attaching a reinforcing member, where FIG. 6A is a front view, and FIG. 6B is an explanatory view showing a state where the bolt unit is attached to a structural material.
FIG. 7 is a perspective view showing an example of a conventional reinforcing structure.
[Explanation of symbols]
1 Reinforcing member
2a, 2b Synthetic resin foam
3 Oil damper
4 Filler
5 Lap leaf spring
6 bolt unit
7 Side material
11 Beam (one structural material)
12 pillars (the other structural material)
13 foundation
14 Basics
15 Horizontal structural material A
16 Horizontal structural material B
51 Parent leaf spring
52 Child leaf spring
53 clips
54 End of main leaf spring
55 Bolt hole
56 Groove
57,58 Sliding friction resistance material

Claims (2)

In the two structural materials that are in contact with each other or crossing each other, spring steel is laid as a reinforcing member from the middle of one structural material to the middle of the other structural material and fixed to the structural material. Means for restraining the movement is provided, and the reinforcing member is a reinforcing structure of the building or the building in which the reinforcing member is attached between the structural members , and the means for restraining the movement of the spring steel includes the following [1] to [ [6] A structure or a reinforcing structure of a building , which is a means obtained by combining any one of the means described in [6] .
[1] Attach an oil damper between the structural members spanned by spring steel
[2] A spring steel is formed by laminating a plurality of leaf springs and pressed by a fixing member, and a sliding friction resistance material is provided between the leaf springs.
[3] A spring leaf is a lap leaf spring composed of a parent leaf spring that is bridged and fixed between the structural members, and a child leaf spring that slides relative to the parent leaf spring, A fixing member that slidably presses the parent leaf spring and the child leaf spring and a sliding friction resistance material provided between the fixing member and the overlap leaf spring are provided.
[4] Fill the space formed by the spring steel with each structural material spanning the spring steel.
[5] The outer surface side of the spring steel is covered with a mesh body, and the mesh body is integrated with the spring steel using an impregnating material.
[6] A side plate is joined and integrated to at least one of both sides in the short direction of the spring steel which is fixed to the two structural members at both ends in the longitudinal direction and curves to the front and back sides. When the space side formed by the spring steel and the structural material is the back side of the spring steel and the direction opposite to the space side is the surface side of the spring steel, by laminating the synthetic resin foam on at least the surface side of the spring steel, Furthermore , the reinforcement structure of the building or building of Claim 1 which restrains a motion of spring steel.

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