JP2012046901A - Composite beam for wooden construction - Google Patents

Composite beam for wooden construction Download PDF

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JP2012046901A
JP2012046901A JP2010187749A JP2010187749A JP2012046901A JP 2012046901 A JP2012046901 A JP 2012046901A JP 2010187749 A JP2010187749 A JP 2010187749A JP 2010187749 A JP2010187749 A JP 2010187749A JP 2012046901 A JP2012046901 A JP 2012046901A
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shaped steel
web
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wood
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Mikio Tashiro
幹夫 田代
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Abstract

PROBLEM TO BE SOLVED: To provide a composite beam for wooden construction, which is a main member in a conventional framework construction method of a wooden house and is bonded to a metallic material inserted to a column.SOLUTION: A light channel steel for a beam material is formed by bending a strip-shaped steel plate into a light channel steel shape in the longitudinal direction, provided with a plurality of bolt holes 4 on webs at both longitudinal end parts, and provided with a plurality of projection parts on the web backside other than the vicinity of the bolt holes of the web. In the substantive light channel steel, a groove 3a for which a projected surface is curved to the inner side is formed near the center of lips 3 extending outwards from the distal ends of upper and lower flanges 2 of the light channel steel, and nail holes 7 are provided at prescribed intervals on a part near the lip end part. A pair of the substantive light channel steel webs are piled up with each other, the projection parts of the webs are integrated with each other by connection of caulking 5, a cross section is formed into a roughly H shape, a wooden material 6 is inserted between the lips 3 extending from the upper and lower flanges, and the wooden material 6 is fixed with nails 8 from the nail holes 7 provided on the lips.

Description

本発明は、木造住宅の在来軸組構法における主要部材の柱と梁の接合において、予め木質柱に挿嵌されている金物(プレ−ト形状)に接合する合成梁(梁断面の中央部は鋼板で、梁の上下は小径な木材を使用)とその製造に関するものである。 The present invention relates to a composite beam (center portion of a beam cross-section) that is joined to a hardware (plate shape) that has been previously inserted into a wooden pillar in joining of a pillar and a beam of a main member in a conventional frame construction method of a wooden house. Is a steel plate and the upper and lower beams use small diameter wood) and its manufacture.

従来、住宅建築は大半が木造建築であり、その大部分が軸組構法である。その木造の軸組構法は、3階建以外は法的規制も少なく、設計段階から、構造設計者が介入せずに自由に実務者が設計・施工ができていたため、構造のばらつきが非常に多いのが現状である。しかし、阪神・淡路大震災以降は、被害の多かった在来軸組構法の研究が急増し、詳細な設計法が完備されつつある。一方、大径の木材や質的に優秀な木材が天然材としては得られなくなってきており、近年、環境面での森林のCO2の吸収効果と林業振興で地方再生も兼ねて、間伐材のような小径木の丸太を有効利用し、これらの丸太から切り出した帯状板材(ラミナ、或いはひき板とも称されている)を複数積層接着してなる集成材が、木造建築における柱、梁等の構造材に用いられている。 Conventionally, most residential buildings are wooden buildings, and most of them are framed. The wooden frame construction method has few legal regulations other than the three-story building, and since the construction engineers were able to design and construct freely without any intervention from the design stage, the structural variation was very large. There are many current situations. However, since the Great Hanshin-Awaji Earthquake, research on the traditional frame construction method, which was heavily damaged, has increased rapidly, and detailed design methods are being completed. On the other hand, large-diameter timber and qualitatively superior timber are no longer available as natural wood. In recent years, both the effects of forest CO2 absorption and the promotion of forestry in the area of the environment have been improved. Glue made by stacking and laminating a plurality of strips (also called lamina or sawing board) cut out from these logs, which are effectively used for such small-diameter logs, such as pillars and beams in wooden buildings Used for structural materials.

政府は環境保全や、遊休資源の活用に迫れて、農水省では、昨年まとめた農林・林業再生プランで「10年後の木材自給率50%以上」を目指す方針を示していて、「公共建築物木材利用促進法案」では、国や地方が率先して国産材利用に努めるよう明記し、さらに、国が建設する学校や庁舎などでの活用を義務付ける検討をしている。しかし、公共建築や民間の非住宅を木造での大規模な構造にしたくとも、規模が違うため蓄積がある木造住宅の技術は転用できない。すなわち、大規模な木造の技術が系統立っていないのが現状である。 The government is approaching environmental conservation and utilization of idle resources, and the Ministry of Agriculture, Forestry and Fisheries has shown a policy of aiming for a timber self-sufficiency rate of 50% or more in 10 years in the agriculture and forestry / forestry regeneration plan compiled last year. The “Wood Utilization Promotion Bill” clearly states that the national and local governments will take the initiative in using domestically produced timber, and is considering making it mandatory for schools and government buildings built by the government. However, even if we want to make public buildings and private non-housing large-scale structures made of wood, we cannot divert the technology of wooden houses that have accumulated due to the difference in scale. In other words, the current situation is that large-scale wooden techniques are not systematized.

木造住宅の軸組構法は、まず、柱と梁で軸組を構成し、それに壁や床を取り付けて行く構法である。柱には「通し柱」と「管柱」があり、柱の構造的な役割は、通し柱、管柱ともに垂直荷重を支持し、耐力壁として外周に作用する圧縮力や引張力に抵抗し、また、風圧力(水平力)を受ける外壁面での変形を防いでいる。 The wooden frame construction method is a construction method in which a frame is first composed of columns and beams, and walls and floors are attached to it. There are “through columns” and “tube columns” in the columns, and the structural role of the columns is to support vertical loads in both the through columns and tube columns, resist compressive and tensile forces acting on the outer periphery as load bearing walls, and This prevents deformation on the outer wall surface that receives wind pressure (horizontal force).

従来、木造住宅の軸組構法での通し柱は、柱の中間に梁を差し込むため、柱の断面欠損が大きくて、曲げ耐力は期待できずに引張力も不足する場合が多い。そこで、建築基準法関係告示第1460号で必要性能を確保するため、継手・仕口ではホゾや相欠きと組み合わせながら補強・補助金物等が明記されている。 Conventionally, through-columns in a wooden frame construction method have a beam inserted in the middle of the column, so the cross-sectional defect of the column is large, bending strength cannot be expected, and tensile strength is often insufficient. Therefore, in order to ensure the required performance in the Building Standard Law Related Notification No. 1460, the joints and joints clearly specify reinforcements and sub-assemblies in combination with hozos and lacks.

近年、特開2007−28494号公報(第1公知例)では、集成材は製材と比較して高価で高コストのため、集成材の長所(無垢材のような割れによる強度低下の心配がなく、製材では困難であった大断面の木製梁を実現することが可能で、さらに、弱点部が分散することにより、強度や剛性のばらつきが小さいので設計を合理的に行うことができる等)を生かしながら、ロ−コスト化を図る目的で、複数の製材を組み合わせて鋼板で補強した木製梁が開示されている。 In recent years, in Japanese Unexamined Patent Publication No. 2007-28494 (first known example), the laminated wood is expensive and expensive compared to the lumber, so there are no advantages of the laminated wood (there is no concern about strength reduction due to cracks like solid wood) It is possible to realize a large cross-section wooden beam, which was difficult with lumbering, and because the weak points are dispersed, the variation in strength and rigidity is small, so the design can be rationalized, etc.) A wooden beam reinforced with a steel plate by combining a plurality of lumbers has been disclosed for the purpose of reducing the cost while making use of it.

また、実開昭57−119021号公報(第2公知例)では、住宅壁用の複合桟材として木材取り付け作業の能率が上がる方法が開示されている。 Japanese Utility Model Publication No. 57-1119021 (second publicly known example) discloses a method for increasing the efficiency of wood mounting work as a composite crosspiece for a residential wall.

特開2007−28494号JP 2007-28494 A 実開昭57−119021号Shokai 57-1119021

しかしながら、現在木造建築における柱、梁等の構造材に多く使用されている集成材は、ラミナ(挽き板)の高強度樹種のみでは高コストになるため、強度の弱い樹種から強い樹種まで、広い範囲の樹種の中から選択して効率的な断面形状にしている。しかし、そのため管理が広範囲になり在庫も増えてくる。さらに、ラミナの反り・割れ・節等の管理も必要であり、強度の確保とコストとは反比例しておりコスト削減に努力はしているが、製材品より高価になっている。また、木質の小口から水を吸水する可能性があり、施工現場での雨天時の対応(材料置き場の養生管理・建て方中止等)が必要になる。 However, the laminated wood that is often used for structural materials such as pillars and beams in wooden buildings is expensive because only high-strength tree species of lamina (grinding board) are used. An efficient cross-sectional shape is selected from a range of tree species. However, this increases management and increases inventory. Furthermore, it is necessary to manage lamina warp, cracks, joints, etc., and ensuring strength and costs are inversely proportional, and efforts are being made to reduce costs, but they are more expensive than lumber products. In addition, there is a possibility that water will be absorbed from the wooden mouthpiece, and it is necessary to deal with rainy weather at the construction site (curing management of material storage, discontinuation of construction, etc.).

次いで、第1公知例の場合は、複数の製材品が梁成方向に重ねられ、該複数の製材品の側面に配置された鋼板に、鋲で固定する工法であるが、各製材品は反り・割れ・節・曲がり・捻れ等を持っており、当然各製材品の癖を考慮して組み立てられるが、寸法精度を守るのはコスト的に難しく、また、前記組み立て時の製材品の癖に鋼板がなじみ固定され、部材の形状寸法・曲がり・捻れ等の品質上の問題が発生する可能性がある。 Next, in the case of the first known example, a plurality of lumber products are stacked in the beam forming direction and fixed to the steel plates arranged on the side surfaces of the plurality of lumber products with a scissors, but each lumber product is warped.・ It has cracks, joints, bends, twists, etc., and of course it can be assembled taking into consideration the defects of each lumber product, but it is difficult to keep the dimensional accuracy in terms of cost, and the lumber of the lumber product at the time of assembly There is a possibility that quality problems such as shape dimensions, bending, and twisting of the member may occur due to the steel plate being fitted and fixed.

また、第2公知例の場合は、住宅壁用の複合桟材として考案されている引用文献には、板状体15a、15bの間にスポットを施す部位毎に、細片の板状体20を配置すると記載されているが、製作順序は長尺の板状体15に、割付位置を出して細片の板状体20を組み合わせる。その後、細片の板状体20の位置を注意(間隔・直角・出入り等)して仮付を行う。仮付け後に、部材の集結の確認・寸法精度確認を行ってスポットを施す工程と思われるが、単品の割には工程が煩雑でコスト高になる可能性がある。また、接合部18に木材14を挿入する工法であるが、複合桟材の製品成(W1)、製品の捻れ等で寸法の許容差が生じるが、何処で調整するのか記載されてないので定かではないが、複数の複合桟材が組み立てられた場合は、仕上げ面での化粧合板24の平滑性が保てないと思われる。 Further, in the case of the second known example, in the cited document devised as a composite bar material for a housing wall, a strip-like plate-like body 20 is provided for each portion where spots are provided between the plate-like bodies 15a and 15b. In the manufacturing order, the long plate-like body 15 is combined with the thin plate-like body 20 at the assigned position. Thereafter, the position of the thin plate-like body 20 is carefully attached (interval, right angle, in / out, etc.) and temporarily attached. It is considered that the spot is formed by checking the concentration of members and checking the dimensional accuracy after provisional attachment, but the process may be complicated and expensive for a single product. Moreover, although it is the construction method which inserts the timber 14 in the junction part 18, although the tolerance of a dimension arises by the product production (W1) of a composite crosspiece, the twist of a product, etc., since it is not described where to adjust, it is clear. However, when a plurality of composite crosspieces are assembled, it seems that the smoothness of the decorative plywood 24 on the finished surface cannot be maintained.

本発明の解決すべき課題は、上述した低コストで断面性能が高い梁と、従来の木質梁で対応できなかった大規模な建築物の技術上の問題点を解決することである。また、杉をはじめとする低強度樹種の活用を促進するとともに、効率的な断面形状で断面性能が高い木造用合成梁を低コストで提供するものである。 The problem to be solved by the present invention is to solve the technical problems of the above-mentioned low-cost beam with high cross-sectional performance and large-scale buildings that cannot be handled by conventional wooden beams. In addition to promoting the use of low-strength tree species such as cedars, the present invention provides low-cost wooden composite beams with an efficient cross-sectional shape and high cross-sectional performance.

本発明者は、前記課題を解決すべく検討した結果、曲げ強度および引張強度が必要な当該部には鋼板を使用し、納まりが必要な当該部には小径な木材を使用することでの技術的知見を得た。具体的には、木造住宅の梁は、住宅内部の家具、居住者等の荷重が梁にかかり、曲げ応力となり、梁成の中心を境に梁の上側に圧縮応力、下側には引張応力が生じている。そのため、従来の木造住宅の梁では高強度樹種のベイマツ等が使用されている。本発明の技術では、応力に対処する箇所は鋼板を使用し、梁のホゾ等での接合箇所には低強度樹種を使用する。すなわち、各資材の特徴を生かすことで、強度の確保と低強度樹種の活用の両立が可能にすることができることに想到した。その要旨とするところは以下の通りである。   As a result of studying to solve the above problems, the present inventor uses a steel plate for the part requiring bending strength and tensile strength, and a technique using a small-diameter wood for the part requiring accommodation. Gained knowledge. Specifically, beams in wooden houses are subjected to bending stress due to the load of furniture and residents inside the house, resulting in bending stress, compressive stress on the upper side of the beam, and tensile stress on the lower side. Has occurred. Therefore, high-strength tree bay pine and the like are used in conventional wooden house beams. In the technique of the present invention, a steel plate is used as a location to deal with stress, and a low-strength tree species is used as a joint location at a beam teno or the like. In other words, by making use of the characteristics of each material, it has been conceived that both the securing of strength and the utilization of low-strength tree species can be achieved. The gist is as follows.

(1)帯状の鋼板を、長手方向に沿って軽ミゾ形鋼状に折曲形成され、長手両端部のウェブに複数のボルト孔を有し、前記ウェブのボルト孔近傍以外のウェブ背側には複数の突起部を有している梁材用の軽ミゾ形鋼であって、前記軽ミゾ形鋼の上下フランジ先端から外向きに延在するリップの中心近傍には、凸面を内側に湾曲した溝が施され、前記リップ端部近傍部に所定の間隔で釘穴を有してなる略軽ミゾ形鋼において、一対の前記略軽ミゾ形鋼ウェブ相互を重合し、前記ウェブの突起部相互をカシメ結合で一体化し、断面が略H字形状に形成されて、前記上下フランジから延在するリップ間に、両端部にスリット加工が施されている木材を挿入し、前記リップに有する釘穴から前記木材を釘で固定されることを特徴とする木造用合成梁。 (1) A belt-shaped steel plate is formed into a light grooved steel shape along the longitudinal direction, and has a plurality of bolt holes in the web at both ends of the longitudinal direction. Is a light groove steel for beam material having a plurality of protrusions, and a convex surface is curved inward in the vicinity of the center of the lip extending outward from the top and bottom flange ends of the light groove steel. In a substantially light grooved steel having a groove formed therein and having nail holes at predetermined intervals in the vicinity of the lip end, a pair of the light grooved steel webs are superposed on each other, and a protrusion of the web A nail having a lip which is integrated with caulking and has a cross section formed in a substantially H shape, and a lip extending from the upper and lower flanges is slit between both ends. A wooden composite beam, wherein the wood is fixed with a nail from a hole.

(2)帯状の鋼板を長手方向に沿って、まず、軽ミゾ形鋼状に折曲形成し、長手両端部のウェブに複数のボルト孔を施し、前記ウェブのボルト孔近傍以外のウェブ背側には複数の突起部を施した梁材用の軽ミゾ形鋼であって、前記軽ミゾ形鋼の上下フランジ先端から外向きに延在するリップの中心近傍に、凸面を内側に湾曲した溝を施し、前記リップ端部近傍部には所定の間隔で釘穴を施してなる略軽ミゾ形鋼において、一対の前記略軽ミゾ形鋼ウェブ相互を重合し、前記ウェブの突起部相互をカシメ結合で一体化して、断面を略H字形状に形成した後、前記上下フランジから延在するリップ間に、両端部にスリット加工を施した木材を挿入し、前記リップに有する釘穴から前記木材を釘で固定することを特徴とする木造用合成梁の製造方法。 (2) A strip-shaped steel plate is first bent into a light groove shape along the longitudinal direction, and a plurality of bolt holes are formed in the web at both ends of the longitudinal direction. Is a light groove-shaped steel for a beam having a plurality of protrusions, and a groove having a convex surface curved inward in the vicinity of the center of a lip extending outward from the top and bottom flange ends of the light groove-shaped steel. In a substantially light grooved steel in which nail holes are provided at predetermined intervals in the vicinity of the lip end, a pair of the light grooved steel webs are superposed on each other, and the protrusions of the web are caulked together. After integration by bonding and forming a substantially H-shaped cross section, between the lips extending from the upper and lower flanges, insert wood with slits at both ends, and through the nail holes in the lip, the wood Method of manufacturing composite beam for wooden structure, characterized by fixing the frame with nails

(A)本発明に係る木造用合成梁によれば、木質柱に挿嵌されている金物(プレ−ト形状)と当該合成梁とブレ−スとの芯が通った構造である。したがって、軸力系の強力な耐力壁で耐震性、耐久性を重要視した設計を合理的に行うことができ、粘り強い構造となる。さらに、従来の木造梁と異なりクリ−プ現象(床のたわみが進行して元に戻らない)が少ない等の効果も得られる。 (A) The wooden composite beam according to the present invention has a structure in which a metal fitting (plate shape) inserted into a wooden column passes through the core of the composite beam and the brace. Therefore, it is possible to rationally design with a strong bearing wall of the axial force system, with an emphasis on earthquake resistance and durability, and a tenacious structure is obtained. Further, unlike the conventional wooden beam, there are obtained effects such as little creep phenomenon (floor deflection does not return to its original state).

(B)本発明に係る木造用合成梁によれば、木質の通し柱を大断面にすると、半剛接合でのラ−メン系の耐力壁を作ることができる。具体的には、大断面の通し柱の中心部に挿嵌されている金物(プレ−ト形状)と、当該合成梁の双ウェブとでサンドイッチ構造なり、ボルトで緊結して、プレ−ト(金物)で曲げ応力に抵抗させる。したがって、木造住宅等以外でも大スパンが可能になり、耐震性、耐久性を重要視した設計を合理的に行うことができ粘り強い構造を得ることができる。 (B) According to the composite beam for a wooden structure according to the present invention, when a wooden through-column is made into a large cross section, a ramen-based bearing wall with semi-rigid connection can be formed. Specifically, a metal structure (plate shape) inserted into the center of a through-column with a large cross section and a double web of the composite beam are sandwiched, and are fastened with bolts to form a plate (metal object). ) To resist bending stress. Therefore, a large span is possible even outside a wooden house and the like, and a design that places importance on earthquake resistance and durability can be rationally performed, and a tenacious structure can be obtained.

(C)本発明に係る木造用合成梁によれば、異種資材の組み合わせにより各々の特徴を生かすことで、強度の確保と低強度樹種の活用の両立ができる合成梁である。例えば、強度が必要な当該部に鋼板を加工して使用し、梁のホゾ等の接合箇所には杉等を載置し効率的な断面を形成する。したがって、ロングスパンの対応が可能であり、断面性能が高くて低コストの極めて実用性の高い合成梁を得ることができ、国内人口林資源の豊富な杉をはじめとする低強度樹種の活用を促進し有効活用を図ることもできる。 (C) The wooden composite beam according to the present invention is a composite beam capable of ensuring both strength and utilizing low-strength tree species by utilizing the characteristics of different materials by combining different materials. For example, a steel plate is processed and used for the part where strength is required, and cedar or the like is placed at a joint portion such as a beam tenon to form an efficient cross section. Therefore, it is possible to handle long spans, obtain a highly practical composite beam with high cross-sectional performance and low cost, and use low-strength tree species such as cedar, which is rich in domestic forest resources. It can be promoted and used effectively.

本発明に係る木造用合成梁の一例を示す模式図であり、(a)はA−A断面図、(b)はB−B断面図、(c)はC−C平面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows an example of the wooden composite beam which concerns on this invention, (a) is AA sectional drawing, (b) is BB sectional drawing, (c) is CC top view. 本発明に係る木造用合成梁を形成する略軽ミゾ形鋼の製造工程の一例を示す説明図であり、(a)は略軽ミゾ形鋼の突起部ウェブの加工前、(b)は突起部ウェブの加工後の模式図である。It is explanatory drawing which shows an example of the manufacturing process of the substantially light groove-shaped steel which forms the composite beam for wooden structures concerning this invention, (a) is before the process of the protrusion part web of a substantially light groove-shaped steel, (b) is protrusion. It is a schematic diagram after the processing of the partial web.

以下、図1〜図2に基づいて、本発明を実施するための最良の形態を実施例で説明する。
図1は、本発明に係る木造用合成梁の一例を示す模式図であり、(a)はA−A断面図、(b)はB−B断面図、(c)はC−C平面図、図2は木造用合成梁を形成する略軽ミゾ形鋼の製造工程の一例を示す説明図であり、(a)は略軽ミゾ形鋼の突起部ウェブの加工前、(b)は突起部ウェブの加工後の模式図である。この例において、ウェブ1、ハット型ウェブ1a、フランジ2、リップ3,湾曲溝3a、ボルト孔4、カシメ5,木材6,釘穴7、および釘8から構成される。以下、これに沿って説明する。
The best mode for carrying out the present invention will be described below with reference to FIGS.
FIG. 1 is a schematic view showing an example of a wooden composite beam according to the present invention, in which (a) is a cross-sectional view taken along the line AA, (b) is a cross-sectional view taken along the line BB, and (c) is a plan view taken along the line CC. FIG. 2 is an explanatory view showing an example of a manufacturing process of a substantially light groove-shaped steel forming a composite beam for a wooden structure, (a) before processing a protrusion web of the substantially light groove-shaped steel, (b) a protrusion. It is a schematic diagram after the processing of the partial web. In this example, the web 1, the hat web 1 a, the flange 2, the lip 3, the curved groove 3 a, the bolt hole 4, the crimp 5, the wood 6, the nail hole 7, and the nail 8 are configured. Hereinafter, it demonstrates along this.

まず、略軽ミゾ形鋼を製作するが、長尺鋼板の曲げ加工する前に、鋼板長辺両側端近傍に約300mm前後の間隔で、直径4.5mm程度の釘穴7の穴加工を行う。次に、図2(a)に示すように、釘穴7が加工されている長尺鋼板を長手方向に沿って、コ字形状に折曲げてウェブ1とフランジ2を形成する。さらに、前記コ字形状の上下のフランジ2の先端を、上下に直角折曲しリップ3を形成する。その際、前記リップ3の中心部近傍に湾曲した溝3aの形状を施す。すなわち、リップ3の一部を湾曲した溝3aの形状にするのは、当該略軽ミゾ形鋼を一対にした断面において、前記湾曲した溝3aの間に、該当湾曲した溝3aより僅かに大きい木材6を挿入することにより、瞬時にスプリングバック作用の効果が得られるためである。続いて、図2(b)に示すように、ウェブ1の全面を所定の位置の間隔で絞り加工を施し、ハット型ウェブ1aを製作する。尚、略軽ミゾ形鋼の両端のハット型ウェブ1aの位置・寸法は、設計時の諸条件により決定する。例えば、設計荷重・外力から通し柱、梁の断面が決定すると、次に、金物(プレ−ト形状)の寸法が決まり、そこから位置・寸法が決定する。また、略軽ミゾ形鋼の中間でのハット型ウェブ1aの位置は、軸力系の耐力壁の場合は管柱の位置で決まる。すなわち、断面H字形梁の上または下の管柱位置に、管柱取り付け用プレ−ト兼ブレ−ス用ガセットプレ−トを当接し、前記ガセットプレ−トと、2枚のウェブ1とでサンドイッチしてからボルトの締結を行うが、前記ガセットプレ−トに隣接するウェブがハット型ウェブ1aの位置である。当該略軽ミゾ形鋼のサイズは、設計時の諸条件により決められるが、ウェブ寸法200〜600mm程度、フランジ寸法50〜150mm程度であり、長さは3〜12m程度まで製作が可能で、板厚は1.6〜6.0mm程度である。 First, a substantially light groove-shaped steel is manufactured, but before bending the long steel plate, drilling of the nail holes 7 having a diameter of about 4.5 mm is performed at intervals of about 300 mm in the vicinity of both ends of the long side of the steel plate. . Next, as shown in FIG. 2A, the long steel plate in which the nail holes 7 are processed is bent into a U-shape along the longitudinal direction to form the web 1 and the flange 2. Further, the ends of the U-shaped upper and lower flanges 2 are bent at right angles to form a lip 3. At that time, a curved groove 3 a is formed near the center of the lip 3. That is, a part of the lip 3 is formed into a curved groove 3a in a cross section in which the substantially light groove steel is paired, and is slightly larger than the curved groove 3a between the curved grooves 3a. This is because the effect of the springback action can be obtained instantaneously by inserting the wood 6. Subsequently, as shown in FIG. 2B, the entire surface of the web 1 is drawn at intervals of a predetermined position to produce a hat-type web 1a. The positions and dimensions of the hat-shaped webs 1a at both ends of the substantially light grooved steel are determined according to various conditions during design. For example, when the cross-section of the through column and the beam is determined from the design load / external force, the dimension of the hardware (plate shape) is determined, and the position / size is determined therefrom. Further, the position of the hat-shaped web 1a in the middle of the substantially light grooved steel is determined by the position of the pipe column in the case of the bearing wall of the axial force system. That is, the pipe column mounting plate and brace gusset plate is brought into contact with the tube column position above or below the H-shaped beam, and sandwiched between the gusset plate and the two webs 1. After that, the bolt is fastened, and the web adjacent to the gusset plate is the position of the hat-type web 1a. The size of the substantially light groove-shaped steel is determined by various conditions at the time of design. The web dimension is about 200 to 600 mm, the flange dimension is about 50 to 150 mm, and the length can be manufactured to about 3 to 12 m. The thickness is about 1.6 to 6.0 mm.

つづいて、前記既述で製作された略軽ミゾ形鋼の背中を合わせて略H字形状に組み立てる。まず、図1に示すように、背中合わせに配置した略軽ミゾ形鋼相互のウェブ1間を重合し、ウェブ1の位置、フランジ2の水平段差の有無、ウェブ1a等の接触状況を確認し、図1(b)に示すように、重合したウェブ1aの所定の位置にカシメ加工5を施し固定する。固定手段はボルト・ナット等による締着、ねじと止め、溶接、カシメ等が挙げられるが、所要の強度が得られれば公知の何れの方法でも良い。尚、重合部のウェブ1aの幅は接続強度が得られるように適宜決定する。これにより、強固に固定された略H字形状の形鋼が製作される。当該H字形状形鋼のサイズは、ウェブ寸法200〜600mm程度、フランジ寸法100〜300mm程度、長さは3〜12m程度まで製作が可能である。 Subsequently, the back of the substantially light grooved steel produced as described above is assembled into a substantially H-shape. First, as shown in FIG. 1, between the webs 1 of the substantially light grooved steels arranged back to back, the position of the web 1, the presence or absence of a horizontal step of the flange 2, the contact status of the web 1a, etc. are confirmed, As shown in FIG.1 (b), the crimping process 5 is given and fixed to the predetermined position of the superposed | polymerized web 1a. Examples of the fixing means include fastening with bolts and nuts, screws and fastenings, welding, caulking, and the like, but any known method may be used as long as a required strength is obtained. In addition, the width of the web 1a in the overlapping portion is appropriately determined so that the connection strength can be obtained. Thereby, a substantially H-shaped section steel firmly fixed is manufactured. The H-shaped shape steel can be manufactured to have a web size of about 200 to 600 mm, a flange size of about 100 to 300 mm, and a length of about 3 to 12 m.

次いで、図1に示すように、H字形状形鋼の上下のリップ3間に、事前に木材両端がスリット加工された木材6を挿入する。この場合、木材の幅寸法はリップの湾曲溝3a間より僅かに大きめに製作されている。リップの湾曲溝3a間に木材6を挿入することにより、両サイドのリップ3が僅かに開き、リップ3のスプリングバック作用の効果により木材6が固定される。つづいて、釘穴7から釘8等でスチ−ルと木材を一体化するが、事前に木材の反り等が湾曲溝3aの凸面で押さえられているため、釘8等の取付け作業時に他の箇所の木材が動くこともなく、容易に取付け作業が行うことができる。尚、固定手段は、釘、木ねじ、グル−ラムリベット、ドラフトピン、ラグスクリュ−、ボルト・ナット等による締着等が挙げられるが、所要の強度が得られれば公知の何れの方法でも良い。 Next, as shown in FIG. 1, the wood 6 having the wood both ends slit processed in advance is inserted between the upper and lower lips 3 of the H-shaped steel. In this case, the width of the wood is made slightly larger than between the curved grooves 3a of the lip. By inserting the wood 6 between the curved grooves 3 a of the lip, the lips 3 on both sides are slightly opened, and the wood 6 is fixed by the effect of the spring back action of the lip 3. Subsequently, the steel and the wood are integrated from the nail hole 7 with the nail 8 or the like. However, since the warp of the wood is preliminarily pressed by the convex surface of the curved groove 3a, other parts are attached when the nail 8 or the like is attached. Installation work can be easily performed without moving the wood at the location. The fixing means includes nails, wood screws, glue ram rivets, draft pins, lug screws, bolts and nuts, etc., but any known method may be used as long as the required strength is obtained.

合成梁用鋼板の材質としては、溶融亜鉛めっき鋼板、溶融55%アルミニュウム−亜鉛合金めっき鋼板等が望ましいが、特に限定されるものではない。製作する機械については特に問わないが、例えば、軽ミゾ形鋼の形状を成形加工する方法としては、引き抜き成形方法、プレス加工方法、ロ−ル成形方法等のいずれかで成形することができるし、カシメ加工はプレス機で、また、各々の機械を組み合わせた複合機械設備で製作することもできる。木材の材質は、杉をはじめとする低強度樹種から選別することもできる。 As a material of the steel plate for composite beams, a hot dip galvanized steel plate, a molten 55% aluminum-zinc alloy plated steel plate and the like are desirable, but not particularly limited. The machine to be manufactured is not particularly limited. For example, as a method for forming the shape of the light grooved steel, it can be formed by any one of a pultrusion method, a press method, a roll forming method, and the like. The caulking process can be performed by a press machine or by a complex machine facility that combines the respective machines. The wood material can be selected from low-strength tree species such as cedar.

以上説明したように本発明に係る木造用合成梁によれば、異種資材の組み合わせにより、各々特徴を生かすことで、強度の確保と間伐材等の小径低強度樹種活用の両立が可能な合成梁であり、断面性能が高く低コストの極めて実用性の高いため、耐震性、耐久性を重要視した設計を合理的に行うことができ、また、国内人口林資源の豊富な杉をはじめとする低強度樹種の活用を促進し有効活用を図ることもでき、建設業界および森林資源の保護活用等で社会に与える効用は極めて大きい。 As described above, according to the composite beam for a wooden structure according to the present invention, by combining different materials, the composite beam is capable of both ensuring strength and utilizing small-diameter low-strength tree species such as thinned wood. Because the cross-sectional performance is high and the cost is extremely practical, it is possible to rationally design with an emphasis on earthquake resistance and durability. The use of low-intensity tree species can be promoted for effective use, and the utility to society through the construction industry and the protection and utilization of forest resources is extremely large.

1 ウェブ
1a ハット型ウェブ
2 フランジ
3 リップ
3a 湾曲溝
4 ボルト孔
5 カシメ
6 木材
7 釘穴
8 釘









































1 Web 1a Hat-type web
2 Flange 3 Lip 3a Curved groove 4 Bolt hole 5 Caulking 6 Wood 7 Nail hole 8 Nail









































Claims (2)

帯状の鋼板を、長手方向に沿って軽ミゾ形鋼状に折曲形成され、長手両端部のウェブに複数のボルト孔を有し、前記ウェブのボルト孔近傍以外のウェブ背側には複数の突起部を有する梁材用の軽ミゾ形鋼であって、前記軽ミゾ形鋼の上下フランジ先端から外向きに延在するリップの中心近傍には、凸面を内側に湾曲した溝が施され、前記リップ端部近傍部に所定の間隔で釘穴を有してなる略軽ミゾ形鋼において、一対の前記略軽ミゾ形鋼ウェブ相互を重合し、前記ウェブの突起部相互をカシメ結合で一体化し、断面が略H字形状に形成されて、前記上下フランジから延在するリップ間には、両端部にスリット加工が施されている木材を挿入し、前記リップに有する釘穴から前記木材を釘で固定されることを特徴とする木造用合成梁。 A strip-shaped steel plate is formed into a light groove-shaped steel shape along the longitudinal direction, has a plurality of bolt holes in the web at both ends of the longitudinal direction, and a plurality of bolt holes on the back side of the web other than the vicinity of the bolt holes of the web A light groove-shaped steel for a beam material having a protrusion, and in the vicinity of the center of the lip that extends outward from the top and bottom flange tips of the light groove-shaped steel, a groove having a convex surface curved inward is given, In a substantially light groove-shaped steel having nail holes at predetermined intervals in the vicinity of the lip end, a pair of the light groove-shaped steel webs are superposed, and the protrusions of the web are integrated by caulking. The section is formed in a substantially H-shaped cross section, and between the lips extending from the upper and lower flanges, a piece of wood with slit processing is inserted at both ends, and the piece of wood is inserted from a nail hole in the lip. A wooden composite beam characterized by being fixed with nails. 帯状の鋼板を長手方向に沿って、まず、軽ミゾ形鋼状に折曲形成し、長手両端部のウェブに複数のボルト孔を施し、前記ウェブのボルト孔近傍以外のウェブ背側には複数の突起部を施した梁材用の軽ミゾ形鋼であって、前記軽ミゾ形鋼の上下フランジ先端から外向きに延在するリップの中心近傍に、凸面を内側に湾曲した溝を施し、前記リップ端部近傍部には所定の間隔で釘穴を施してなる略軽ミゾ形鋼において、一対の前記略軽ミゾ形鋼ウェブ相互を重合し、前記ウェブの突起部相互をカシメ結合で一体化して、断面を略H字形状に形成した後、前記上下フランジから延在するリップ間に、両端部にスリット加工をほどこした木材を挿入し、前記リップに有する釘穴から前記木材を釘で固定することを特徴とする木造用合成梁の製造方法。





















A strip-shaped steel plate is first formed into a light groove shape along the longitudinal direction, and a plurality of bolt holes are formed in the web at both ends of the longitudinal direction. A light groove-shaped steel for a beam material provided with a projection of the above, a groove having a convex surface curved inward is applied in the vicinity of the center of the lip extending outward from the top and bottom flange tips of the light groove-shaped steel, In a substantially light groove-shaped steel having nail holes at predetermined intervals in the vicinity of the lip end, a pair of the light groove-shaped steel webs are superposed and the protrusions of the web are integrated by caulking. After forming a substantially H-shaped cross section, insert wood with slits at both ends between the lips extending from the upper and lower flanges, and nail the wood from the nail holes in the lip. A method for producing a wooden composite beam, characterized by fixing.





















JP2010187749A 2010-08-25 2010-08-25 Composite beam for wooden construction Pending JP2012046901A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999278A (en) * 2018-10-12 2018-12-14 扬州市建筑设计院有限公司 A kind of steel wood composite shear wall structure building systems
CN111350306A (en) * 2020-03-10 2020-06-30 天津大学 Steel-wood combined component for contour plate framework
CN113463838A (en) * 2020-03-31 2021-10-01 中国地质大学(北京) Combined T-shaped beam and manufacturing method thereof
CN113775113A (en) * 2021-08-12 2021-12-10 天津大学 Novel aluminum-wood composite beam and assembling method
CN116180983A (en) * 2023-02-09 2023-05-30 中建八局西北建设有限公司 Large-scale laminated wood structure and construction method of super-large-section laminated wood beam

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999278A (en) * 2018-10-12 2018-12-14 扬州市建筑设计院有限公司 A kind of steel wood composite shear wall structure building systems
CN108999278B (en) * 2018-10-12 2023-06-02 扬州市建筑设计研究院有限公司 House system with steel-wood composite shear wall structure
CN111350306A (en) * 2020-03-10 2020-06-30 天津大学 Steel-wood combined component for contour plate framework
CN113463838A (en) * 2020-03-31 2021-10-01 中国地质大学(北京) Combined T-shaped beam and manufacturing method thereof
CN113463838B (en) * 2020-03-31 2022-10-25 中国地质大学(北京) Combined T-shaped beam and manufacturing method thereof
CN113775113A (en) * 2021-08-12 2021-12-10 天津大学 Novel aluminum-wood composite beam and assembling method
CN113775113B (en) * 2021-08-12 2023-07-28 天津大学 Aluminum-wood composite beam and assembling method
CN116180983A (en) * 2023-02-09 2023-05-30 中建八局西北建设有限公司 Large-scale laminated wood structure and construction method of super-large-section laminated wood beam

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