JPH09158316A - Hub with reinforcing member for truss and joint structure for truss base structure using the same - Google Patents
Hub with reinforcing member for truss and joint structure for truss base structure using the sameInfo
- Publication number
- JPH09158316A JPH09158316A JP31640795A JP31640795A JPH09158316A JP H09158316 A JPH09158316 A JP H09158316A JP 31640795 A JP31640795 A JP 31640795A JP 31640795 A JP31640795 A JP 31640795A JP H09158316 A JPH09158316 A JP H09158316A
- Authority
- JP
- Japan
- Prior art keywords
- truss
- hub
- members
- frame member
- reinforcing member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、ハブと呼ばれる接
続部材によってパイプ、押出形材のような任意の断面形
状を有し構造材を構成するフレーム部材を順次接続して
組立式立体トラス構造物を構築するトラス用補強部材付
ハブ体およびそれを用いたトラスベース構造体の接合構
造に関し、特にフレーム部材の面内方向の変形を規制す
ることによりフレーム部材とハブの接合部を強化したも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly type space truss structure in which a frame member having an arbitrary cross-sectional shape such as a pipe and an extruded shape member is sequentially connected by a connecting member called a hub. The structure of the hub with the reinforcing member for the truss and the joint structure of the truss base structure using the same, in which the joint between the frame member and the hub is strengthened by restricting the deformation of the frame member in the in-plane direction. is there.
【0002】[0002]
【従来の技術】組立式立体トラス構造物は、組立におい
てボルトや溶接による接合を必要としないため組立作業
が簡単で、高い継手効率が得られ、スマートで高い採光
性と広い無柱空間が得られるなどの優れた特徴を有して
いることから、野外コンサートホール、ガソリンスタン
ド、プール、展示場等の屋根、ビルの側面外壁、植物園
用ドーム、寺院ドーム等に広く採用されている。このよ
うなトラス構造物のジョイント方式を大別すると、 ボールジョイント方式 円筒ジョイント方式 の2方式がある。前者は、トラス格点に球状ジョイント
(ハブ)を使用し、これによってフレーム部材を順次連
結するものである(特開平7−11705号公報等)。
後者は、円筒ジョイント(ハブ)と、押し潰しによって
形成された接続端部を有するフレーム部材とを使用する
ものであり(米国特許第2,931,467号、実開平
2−98121号公報、特開平7−102633号公報
等)、本願発明はこの後者のジョイント方式を採用した
組立式立体トラスの接合構造に関するものである。な
お、ここで組立式立体トラスとは、トラス部分がドーム
型、モスク型、ピラミッド型、フラットストラクチャー
型、或いはバレルヴォールト型等の形状を呈するトラス
構造体を言い、それらが独立した構築物とされる場合並
びに構築物の一部の構造部分として併設される構造物と
される場合などがある。また、以下の記述ではドーム型
を代表例として取り上げたが、それぞれの方式に対応し
たトラス構造とすればよいことはもちろんである。2. Description of the Related Art Assembled space truss structures do not require bolts or welding for assembly, so assembly work is easy, high joint efficiency is obtained, and smart, high daylighting and wide pillar-free space are obtained. It is widely used for outdoor concert halls, gas stations, pools, roofs of exhibition halls, side walls of buildings, dome for botanical gardens, temple dome, etc. The joint methods of such truss structures are roughly classified into two types: ball joint method and cylindrical joint method. In the former, a spherical joint (hub) is used for the truss mark, and the frame members are sequentially connected by this (Japanese Patent Laid-Open No. 7-11705).
The latter uses a cylindrical joint (hub) and a frame member having a connecting end formed by crushing (US Pat. No. 2,931,467, Japanese Utility Model Laid-Open No. 2-98121, Japanese Patent No. The present invention relates to a joint structure of an assembling type space truss adopting the latter joint method. Here, the assembly type three-dimensional truss means a truss structure body in which the truss portion has a shape such as a dome shape, a mosque type, a pyramid type, a flat structure type, or a barrel vault type, and these are independent structures. In some cases, it may be considered as a structure attached as a part of the structure. Further, although the dome type is taken as a typical example in the following description, it goes without saying that a truss structure corresponding to each method may be adopted.
【0003】図10(A),(B)は円筒ジョイント方
式を採用した組立式立体トラス構造物におけるトラスベ
ースの一例を示すドーム型構造物の平面図および正面
図、図11は従来方式でトラス格点を形成する接合構造
を示す分解斜視図、図12(A),(B)、(C)はフ
レーム部材の正面図、平面図および側面図である。これ
らの図において、1はドーム状のトラス構造物における
トラスベース構造体で、多数のフレーム部材2と、これ
らのフレーム部材2を接続する円筒状ハブ3とで構成さ
れている。フレーム部材2は、通常アルミニウム合金等
の直管からなり、その両端部をプレス加工等により押し
潰して偏平状の接続端部5とし、さらにその両面にディ
ンプルと称する凹凸4を設けている。ハブ3は、通常ア
ルミニウム合金(例:Al−Mg−Si系合金)製の押
出型材、鍛造品等によって円筒体に形成され、中心にボ
ルト挿通孔6を有している。また、ハブ3の外周面には
溝壁面に凹凸7を有する6〜9個の連結溝(スロット)
8が放射状に形成され、この連結溝8に前記フレーム部
材2の接続端部5が軸線方向から圧入嵌合されることに
よりフレーム部材2を互いに接続し、トラス格点を形成
している。ボルト挿通孔6にはボルト9が挿通され、そ
の上下の突出端部にワッシャ10および保持板11が嵌
装され、ナット12の締結によって保持板11をハブ3
の上下面に押し付けることで、接続端部5が連結溝8か
ら抜けるのを防止している。また、このボルト9と保持
板11は、ルーフパネル部材をハブ3上に取り付けるた
めにも利用される。そして、このトラス格点をフレーム
部材2で連結することにより組立式トラス構造物のトラ
スベース構造体1が構築され、さらにその上に屋根部材
が載置されてドーム型トラス構造物などが完成される。FIGS. 10A and 10B are a plan view and a front view of a dome structure showing an example of a truss base in an assembled space truss structure adopting a cylindrical joint method, and FIG. 11 is a truss of a conventional method. 12 (A), 12 (B) and 12 (C) are an exploded perspective view showing a joint structure forming a score, and FIG. 12 (A), FIG. 12 (B), and FIG. 12 (C) are a front view, a plan view, and a side view, respectively. In these drawings, reference numeral 1 denotes a truss base structure in a dome-shaped truss structure, which is composed of a large number of frame members 2 and a cylindrical hub 3 connecting these frame members 2. The frame member 2 is usually made of a straight pipe made of aluminum alloy or the like, and both ends thereof are crushed by press working or the like to form flat connecting end portions 5, and concavities and convexities 4 called dimples are provided on both surfaces thereof. The hub 3 is generally formed of an aluminum alloy (eg, Al—Mg—Si alloy) extruded material, a forged product, or the like into a cylindrical body, and has a bolt insertion hole 6 in the center. In addition, the outer peripheral surface of the hub 3 has 6 to 9 connecting grooves (slots) having irregularities 7 on the groove wall surface.
8 are formed in a radial shape, and the connecting ends 5 of the frame member 2 are press-fitted into the connecting groove 8 from the axial direction to connect the frame members 2 to each other to form a truss mark. A bolt 9 is inserted through the bolt insertion hole 6, a washer 10 and a holding plate 11 are fitted to the upper and lower protruding ends thereof, and the holding plate 11 is fixed to the hub 3 by fastening a nut 12.
The connection end portion 5 is prevented from coming off the connecting groove 8 by being pressed against the upper and lower surfaces. The bolt 9 and the holding plate 11 are also used for mounting the roof panel member on the hub 3. Then, the truss base structure 1 of the assembled truss structure is constructed by connecting the truss points with the frame member 2, and the roof member is placed on the truss base structure 1 to complete the dome type truss structure and the like. It
【0004】このようなトラスベース構造体1の接合構
造においては、フレーム部材2の端部に偏平状に押し潰
された接続端部5を設けているので、連結部材の部品点
数が削減できるとともに、立体曲面構造の構造物を構築
する場合には、ハブ3の連結溝8間に割り角度θ以外に
接続部に3つの角度付け(コイン角α、ベント角β、ツ
イスト角γ)をすることによってフレーム部材自体での
任意の球面度を出すことができる。また、ハブ3の軸線
方向(面外方向)の負荷に対しては耐力が高く、設計上
は一層のトラスでよいのでトラスベース構造体を簡略化
することができる。なお、コイン角αは接続端部5の切
断角度、ベント角βはフレーム部材2の軸線と接続端部
5の軸線とのなす角度、ツイスト角γはフレーム部材を
介して隣合い高さおよびハブ軸方向の曲率中心位置が異
なるハブ間の連結溝を連結するフレーム部材における接
続端部間のなす角度である。In such a joint structure of the truss base structure 1, since the connecting end portion 5 which is flatly crushed is provided at the end portion of the frame member 2, the number of parts of the connecting member can be reduced. When constructing a structure having a three-dimensional curved surface structure, three angles (coin angle α, bent angle β, twist angle γ) are to be added to the connecting portion between the connecting grooves 8 of the hub 3 in addition to the split angle θ. Can give an arbitrary sphericity in the frame member itself. In addition, the truss base structure can be simplified since the bearing 3 has a high resistance to the load in the axial direction (out-of-plane direction) of the hub 3 and requires only one truss in design. The coin angle α is the cutting angle of the connecting end 5, the bent angle β is the angle formed by the axis of the frame member 2 and the connecting end 5, and the twist angle γ is the height of the adjacent sides of the frame member and the hub. It is the angle formed between the connection ends of the frame members that connect the connection grooves between the hubs having different axial centers of curvature.
【0005】[0005]
【発明が解決しようとする課題】上記した従来のトラス
ベース構造体の接合構造において、フレーム部材2の接
続端部5はハブ3の軸線方向(面外方向)に長い偏平状
に形成されていることから、ハブ3の軸線方向の外力に
対しては強度的に特に問題はないが、ハブ3の面内方向
(ハブの円周方向)に対しては相対的に弱く、そのため
大型トラス構造体において積雪、地震等でフレーム部材
2に軸線方向の圧縮または引張荷重が加わった場合、フ
レーム部材2がトラス面内において周方向に変形して接
続端部5の近傍5aが折れ曲がり、部分的に破壊したり
構造物全体が破壊する危険性が想定されるという問題が
あった。特に、図10に示すようにドーム体の場合にそ
の頂点から下方への角度出しのために複数箇所に三角形
以外の異形部分、本図では1Aおよび1Bの円周方向に
四辺形部分が現れている。このような部分が他の部分よ
りバランスが異なるためにトラスベース構造体での弱点
部分となり易く、この分を優先的に補強するのが効果的
である。In the conventional joint structure of the truss base structure described above, the connecting end portion 5 of the frame member 2 is formed in a flat shape long in the axial direction (out-of-plane direction) of the hub 3. Therefore, there is no particular problem in terms of strength with respect to the external force in the axial direction of the hub 3, but it is relatively weak in the in-plane direction of the hub 3 (the circumferential direction of the hub), and therefore the large truss structure When a compressive or tensile load is applied to the frame member 2 in the axial direction due to snowfall, an earthquake, etc., the frame member 2 is deformed in the circumferential direction in the truss plane and the vicinity 5a of the connection end 5 is bent and partially destroyed. There is a problem that there is a risk that the entire structure will be destroyed. In particular, as shown in FIG. 10, in the case of a dome body, irregular portions other than triangles, in this figure, quadrilateral portions appear in the circumferential direction in order to angle downward from its apex. There is. Since such a portion has a different balance from other portions, it tends to be a weak point portion in the truss base structure, and it is effective to preferentially reinforce this portion.
【0006】そのため、大きな構造物を構築するために
は、厚肉パイプからなるフレーム部材を使用したり、フ
レーム部材の長さを短くしたり、あるいは上記した特開
平7−102633号公報に開示されているように補強
板を接続端部に設けるなど種々の対策を講じている。し
かしながら、厚肉パイプを使用すると、当然のことなが
らハブ3も大型化してトラスベース構造体自体の重量が
増加し、フレーム部材を短くすると、フレーム部材およ
びトラス格点が増加するため組立作業に時間を要する。
また、補強板を用いると、接続端部5の厚みが増大する
ため、連結溝8の溝幅が大きくなり、またハブ3の径も
これに比例して大きくなり、ハブ質量も大きくなるとい
う不具合があった。Therefore, in order to construct a large structure, a frame member made of a thick pipe is used, the length of the frame member is shortened, or disclosed in the above-mentioned Japanese Patent Laid-Open No. 7-102633. As described above, various measures are taken such as providing a reinforcing plate at the connection end. However, when the thick pipe is used, the hub 3 is naturally increased in size and the weight of the truss base structure itself is increased. When the frame member is shortened, the frame member and the truss grade are increased, so that the assembly work takes time. Requires.
Further, when the reinforcing plate is used, the thickness of the connecting end portion 5 is increased, the groove width of the connecting groove 8 is increased, the diameter of the hub 3 is increased in proportion thereto, and the hub mass is increased. was there.
【0007】本発明は上記した従来の問題点を解決する
ためになされたもので、その目的とするところは、比較
的簡単な構成でフレーム部材の割り角度等を保持しフレ
ーム部材の周方向の変形を規制することにより、トラス
ベース構造体の強度を増大させることができるようにし
たトラス用補強部材付ハブ体およびそれを用いたトラス
ベース構造体の接合構造を提供することにある。The present invention has been made in order to solve the above-mentioned conventional problems, and its object is to maintain the split angle of the frame member and the like in the circumferential direction of the frame member with a relatively simple structure. It is an object of the present invention to provide a hub body with a reinforcing member for a truss capable of increasing the strength of the truss base structure by restricting the deformation, and a joint structure of the truss base structure using the hub body.
【0008】[0008]
【課題を解決するための手段】上記目的を達成するため
本発明は、トラス構造用フレーム部材の接続端部が圧入
嵌合される複数個の連結溝が放射状に形成されたトラス
格点用円筒状ハブにおいて、ハブおよびフレーム部材の
端部を上下から覆うカバーを設け、両カバーの内側に隣
合うフレーム部材の端部間の空間を埋める補強部材を周
方向に間隔をおいて配設したことを特徴とするトラス用
補強部材付ハブ体である。また、本発明は、補強部材が
断面形状で扇形部材、Hの字状部材、梯子状部材、王の
字状部材およびエの字状部材の中のいずれかの形状から
なることを特徴とするトラス用補強部材付ハブ体であ
る。さらに、本発明は、両端に偏平な接続端部を有する
フレーム部材と、前記接続端部が圧入嵌合される複数個
の連結溝が放射状に形成された円筒状ハブによって組立
式立体トラス構造物を構築するトラスベースの接合構造
において、前記ハブおよびフレーム部材の端部を上下か
ら覆うカバーを設け、両カバーの内側に隣合うフレーム
部材の端部間の空間を埋める補強部材を周方向に間隔を
おいて配設したハブ体をトラス格点の弱点部分または全
部分に用いることを特徴とするトラスベース構造体の接
合構造である。In order to achieve the above object, the present invention provides a truss grade cylinder in which a plurality of connecting grooves into which the connecting ends of a truss structure frame member are press-fitted are radially formed. A cover that covers the ends of the hub and the frame member from above and below is provided, and reinforcing members that fill the space between the ends of the adjacent frame members are arranged inside the both covers at intervals in the circumferential direction. Is a hub body with a reinforcing member for a truss. Further, the present invention is characterized in that the reinforcing member has a sectional shape of any one of a fan-shaped member, an H-shaped member, a ladder-shaped member, a king-shaped member and a V-shaped member. It is a hub body with a reinforcing member for a truss. Further, according to the present invention, a frame member having flat connecting ends at both ends thereof, and a cylindrical hub having a plurality of connecting grooves radially formed with a plurality of connecting grooves into which the connecting ends are press-fitted are radially assembled. In the joint structure of the truss base for constructing, a cover for covering the ends of the hub and the frame member from above and below is provided, and a reinforcing member for filling the space between the ends of the adjacent frame members inside the both covers is circumferentially spaced. This is a joint structure of a truss base structure, characterized in that the hub body arranged at a point is used for the weak point portion or the whole portion of the truss grade.
【0009】本発明において、隣接するフレーム部材の
端部間の空間に介在される補強部材は、フレーム部材の
割り角度θを保持しフレーム部材の周方向の変形を規制
する。このような補強部材を備えたハブ体は、トラス格
点の弱点部分または全部分を補強する。In the present invention, the reinforcing member interposed in the space between the ends of the adjacent frame members holds the split angle θ of the frame members and restricts the circumferential deformation of the frame members. The hub body provided with such a reinforcing member reinforces the weak point portion or the whole portion of the truss grade.
【0010】[0010]
【発明の実施の形態】以下、本発明を図面に示す実施の
形態に基づいて詳細に説明する。図1は本発明に係るト
ラスベース構造体の接合構造部の実施の形態を示す平面
図、図2は同トラスベース構造体の接合構造部の正面
図、図3は図2のIII −III 線断面図である。なお、従
来技術の欄で説明した構成部材等と同一のものについて
は同一符号をもって示し、その説明を省略する。これら
の図において、本実施の形態においては、筒状を呈する
カバー21によってハブ3とフレーム部材2の端部を上
下から覆い、このカバー21の内部に設けた複数個の補
強部材22を隣合うフレーム部材2の端部間の空間に介
在させることによりフレーム部材2の割り角度θを保持
するようにしている。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the embodiments shown in the drawings. 1 is a plan view showing an embodiment of a joint structure portion of a truss base structure according to the present invention, FIG. 2 is a front view of the joint structure portion of the truss base structure body, and FIG. 3 is a III-III line of FIG. FIG. In addition, the same components as those described in the section of the prior art are denoted by the same reference numerals, and the description thereof will be omitted. In these figures, in the present embodiment, the ends of the hub 3 and the frame member 2 are covered from above and below by a cover 21 having a cylindrical shape, and a plurality of reinforcing members 22 provided inside the cover 21 are adjacent to each other. The split angle θ of the frame member 2 is maintained by interposing it in the space between the ends of the frame member 2.
【0011】カバー21は、図11に示す上下一対の保
持板11を兼ね備えて用いることもでき、ボルト9およ
びナット12によって円筒状ハブ3の上下面に固定され
ることにより、フレーム部材2の接続端部5がハブ3の
連結溝8からハブ3の軸線方向に抜けるのを防止する機
能をも有している。このようなカバー21は、アルミニ
ウム、強化プラスチック、もしくはこれらの組み合わた
ものによって上下方向に分割して形成されることにより
略同一形状からなる2つの部材21A,21Bで構成さ
れている。部材21A,21Bは、ハブ3より大きな外
径を有する円板状に形成され、その一方の面には図4お
よび図5に示すようにハブ3の端部外周面が嵌合する凹
陥部23がそれぞれ形成され、また中央には前記ボルト
9が挿通されるボルト挿通孔24が形成されている。さ
らに、下側の部材21Bの凹陥部23の底面中央には前
記挿通孔24を取り囲む筒部25が上方へ向かって一体
に突設されており、この筒部25上には前記ハブ3が載
置される。ハブ3と筒部25の外径は略等しい。The cover 21 can be used also as a pair of upper and lower holding plates 11 shown in FIG. 11, and is fixed to the upper and lower surfaces of the cylindrical hub 3 by bolts 9 and nuts 12 to connect the frame members 2. It also has a function of preventing the end portion 5 from coming off from the connecting groove 8 of the hub 3 in the axial direction of the hub 3. Such a cover 21 is composed of two members 21A and 21B having substantially the same shape by being divided and formed in the vertical direction by aluminum, reinforced plastic, or a combination thereof. The members 21A and 21B are formed in a disk shape having an outer diameter larger than that of the hub 3, and one surface thereof has a concave portion 23 into which the outer peripheral surface of the end portion of the hub 3 fits, as shown in FIGS. 4 and 5. And a bolt insertion hole 24 through which the bolt 9 is inserted. Further, at the center of the bottom surface of the recessed portion 23 of the lower member 21B, a tubular portion 25 surrounding the insertion hole 24 is integrally provided so as to project upward, and the hub 3 is mounted on the tubular portion 25. Placed. The outer diameters of the hub 3 and the tubular portion 25 are substantially equal.
【0012】前記補強部材22は、図3および図6に示
すように断面略扇形状を呈する中空体に形成され、隣合
うフレーム部材2の間に配置されることにより左右両側
面22aが隣合うフレーム部材2の端部に設けられた先
細り状のテーパ部26の側面に密接し、外側円弧面22
bの上下端部が前記各部材21A,21Bの内周面、す
なわち凹陥部23を取り囲む周壁部21aの内面に密接
する。このような補強部材22としては、アルミニウム
合金の押出型材、強化プラスチックの押出型材等によっ
て形成される。なお、補強部材22は同形の扇形中空体
となし得るが、金属製の場合、高重量化するので余り好
ましくないが、プラスチック製であれば適用できる。The reinforcing member 22 is formed in a hollow body having a substantially fan-shaped cross section as shown in FIGS. 3 and 6, and is arranged between the adjacent frame members 2 so that the left and right side surfaces 22a are adjacent to each other. The outer circular arc surface 22 is closely contacted with the side surface of the tapered taper portion 26 provided at the end portion of the frame member 2.
The upper and lower ends of b are in close contact with the inner peripheral surface of each member 21A, 21B, that is, the inner surface of the peripheral wall portion 21a surrounding the recess 23. Such a reinforcing member 22 is formed of an aluminum alloy extruded mold material, a reinforced plastic extruded mold material, or the like. The reinforcing member 22 may be a fan-shaped hollow body having the same shape, but if it is made of metal, it is not so preferable because it is heavy, but if it is made of plastic, it can be applied.
【0013】前記フレーム部材2のテーパ部26は、プ
レス加工等により両側から押し潰されることにより形成
され、またこのテーパ部26の先端部には前記ハブ3の
連結溝8に圧入嵌合される偏平状の接続端部5が一体に
設けられている。このため、隣接するフレーム部材2の
端部間の空間は扇形の空間を形成しており、この空間と
略同形状になるように前記補強部材22を形成してい
る。The tapered portion 26 of the frame member 2 is formed by being crushed from both sides by press working or the like, and the tip end portion of the tapered portion 26 is press-fitted into the connecting groove 8 of the hub 3. A flat connecting end 5 is integrally provided. Therefore, the space between the end portions of the adjacent frame members 2 forms a fan-shaped space, and the reinforcing member 22 is formed so as to have substantially the same shape as this space.
【0014】このようなトラス用補強部材付ハブ体を組
立てるには、全てのフレーム部材2の接続端部5を円筒
状ハブ3の連結溝8に圧入嵌合した後、下側の部材21
Bをハブ3の下端側外周面に下から嵌合して隣合うフレ
ーム部材2間に補強部材22を嵌装し、しかる後上側の
部材21Aをハブ3の上端側外周面に嵌合する。そし
て、ボルト9をカバー21およびハブ3のボルト挿通孔
に挿通してナット12を締結すると、カバー21をハブ
3に取り付けることができる。In order to assemble such a truss-reinforcing-member hub body, the connecting ends 5 of all the frame members 2 are press-fitted into the connecting grooves 8 of the cylindrical hub 3 and then the lower member 21.
B is fitted to the lower end side outer peripheral surface of the hub 3 from below, the reinforcing member 22 is fitted between the adjacent frame members 2, and then the upper member 21A is fitted to the upper end side outer peripheral surface of the hub 3. Then, by inserting the bolt 9 into the cover 21 and the bolt insertion hole of the hub 3 and fastening the nut 12, the cover 21 can be attached to the hub 3.
【0015】トラスベース構造体の組立に際しては、上
記のトラス用補強部材付ハブ体をトラス格点の中での弱
点部分に設け、他の部位では従来型のハブを用いてトラ
スベース構造体を構築したりあるいは全てのトラス格点
に上述したハブ体を用いて構築することができ、その全
体構造の外観は図11と同様なものとなる。When assembling the truss base structure, the above-mentioned hub body with reinforcing member for truss is provided at the weak point portion of the truss grade, and at other parts, the conventional hub is used to form the truss base structure body. It can be constructed or constructed by using the above-mentioned hub body for all truss points, and the appearance of the whole structure is similar to that of FIG.
【0016】このような構造からなるトラス用補強部材
付ハブ体を用いて組み立てたトラスベース構造体の接合
構造においては、補強部材22によってフレーム部材2
の割り角度θを一定に保持するようにしているので、フ
レーム部材2が軸線方向の圧縮または引張荷重を受けた
とき、ハブ3に周方向の回転モーメントが発生した場合
においても、ハブ3の面内方向(図1の矢印A,B方
向)の回転に対する抵抗力を増大させることができる。
したがって、フレーム部材2の接続端部5の近傍5aが
面内方向に折れ曲がったりせず、トラスベース構造体の
強度を増大させることができる。また、補強部材22を
用いているので、厚肉のパイプでフレーム部材2を形成
したり、フレーム部材2を短くしたり、あるいは接続端
部5に補強板を設けたりする必要がない。さらに、カバ
ー21の構造も簡単で容易に製作することができる。In the joint structure of the truss base structure assembled using the hub body with the reinforcing member for the truss having such a structure, the frame member 2 is formed by the reinforcing member 22.
Since the split angle θ of the hub 3 is kept constant, even if a rotational moment in the circumferential direction is generated in the hub 3 when the frame member 2 receives an axial compression or tensile load, the surface of the hub 3 It is possible to increase the resistance force against the rotation in the inward direction (arrows A and B in FIG. 1).
Therefore, the vicinity 5a of the connection end 5 of the frame member 2 is not bent in the in-plane direction, and the strength of the truss base structure can be increased. Further, since the reinforcing member 22 is used, there is no need to form the frame member 2 with a thick pipe, shorten the frame member 2, or provide a reinforcing plate on the connecting end portion 5. Further, the structure of the cover 21 is simple and can be easily manufactured.
【0017】図7(A)〜(D)はそれぞれ補強部材の
他の実施の形態を示す平面図である。補強部材22の形
状としては、上記した実施の形態において示した扇形中
空部材に限らず種々の形状とすることができる。例え
ば、円筒状ハブの中心に向かって幅が連続的に狭くなる
断面Hの字状部材(A)や、同じくハブの中心に向かっ
て幅が連続的に狭くなる断面梯子状部材(B)を補強部
材として用いてもよい。また、ハブの周方向に延在しフ
レーム部材の端部側面に当接する3つの当接部22c,
22d,22eの長さが異なりハブの中心に近いものほ
ど短い辺になっている断面王の字状部材(C)、同じく
ハブの周方向に延在しフレーム部材の端部側面に当接す
る2つの当接部22f,22gの長さが異なり、ハブの
中心に近い当接部22gの方が外側の当接部22fより
短い辺になっている断面エの字状部材(D)を補強部材
としてもよい。7A to 7D are plan views showing another embodiment of the reinforcing member. The shape of the reinforcing member 22 is not limited to the fan-shaped hollow member shown in the above-described embodiment, but various shapes can be used. For example, a cross-section H-shaped member (A) whose width continuously decreases toward the center of the cylindrical hub, or a cross-section ladder-shaped member (B) whose width also narrows continuously toward the center of the hub. It may be used as a reinforcing member. Also, three contact portions 22c extending in the circumferential direction of the hub and contacting the end surface of the frame member,
22d and 22e have different lengths and are closer to the center of the hub and have shorter sides. The members have a king-shaped section (C), which also extends in the circumferential direction of the hub and abuts on the end side surface of the frame member. The two contact portions 22f and 22g have different lengths, and the contact portion 22g closer to the center of the hub has a shorter side than the outer contact portion 22f. May be
【0018】図8は本発明の補強部材の取付状態を示す
トラスベース構造体の接合構造部の概念図である。この
実施の形態においては、下側の部材21Bの凹陥部の底
面中央に突設される筒部25の高さを十分に高くして部
材21Bの突出させ、その上にハブを載置している。こ
のように筒部25を高く形成すると、フレーム部材2の
高さが高くなり、フレーム部材2の下面が前記部材21
Bの上面に接触しないようにすることができる。なお、
その他の構成は図1〜図3に示した実施の形態と同じで
ある。FIG. 8 is a conceptual view of the joint structure portion of the truss base structure showing the mounting state of the reinforcing member of the present invention. In this embodiment, the height of the tubular portion 25 projecting at the center of the bottom surface of the recessed portion of the lower member 21B is made sufficiently high to allow the member 21B to project, and the hub is placed thereon. There is. When the tubular portion 25 is formed high in this way, the height of the frame member 2 becomes high, and the lower surface of the frame member 2 has the member 21.
The upper surface of B can be prevented from touching. In addition,
Other configurations are the same as those of the embodiment shown in FIGS.
【0019】図9はフレーム部材の他の実施の形態を示
す一部を破断して示す正面図である。この実施の形態に
おいては、両端に偏平状の連結端部5をそれぞれ一体に
設けた2本の直管30と、これらの直管30を連結する
連結板31とによって断面眼鏡状を呈するフレーム部材
2Aを構成している。このようなフレーム部材2Aは、
2本の直管30と連結板31とからなる押出形材を所定
寸法に切断して連結板31の両端部を凹状に切断除去し
た後各直管30の端部を偏平状に押し潰すことにより容
易に製作することができる。FIG. 9 is a partially cutaway front view showing another embodiment of the frame member. In this embodiment, a frame member having a cross-sectional spectacle shape by two straight pipes 30 integrally provided with flat connecting ends 5 at both ends and a connecting plate 31 connecting these straight pipes 30. It constitutes 2A. Such a frame member 2A is
An extruded shape member including two straight pipes 30 and a connecting plate 31 is cut into a predetermined size, both ends of the connecting plate 31 are cut and removed, and then the ends of each straight pipe 30 are flattened. Can be easily manufactured.
【0020】この種のフレーム部材例は、例えば特開平
7−180217号公報に開示されており、この場合従
来のものより長めの円筒状ハブが用いられることを除い
て従来と同様な取付手段を用いてトラスを形成できる。An example of this type of frame member is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-180217. In this case, a mounting means similar to the conventional one is used except that a cylindrical hub longer than the conventional one is used. Can be used to form trusses.
【0021】このような眼鏡状を呈するフレーム部材2
Aを用いて組立式トラスを構成すると、細い直管30が
使用でき、所要のドーム強度に対してフレーム部材の管
部並びにハブの外径を小さくすることができ、高強度の
一層式トラスベース構造体を提供できる。A frame member 2 having such a spectacle shape.
When the assembly type truss is constructed by using A, the thin straight tube 30 can be used, and the outer diameter of the tube portion of the frame member and the hub can be reduced with respect to the required dome strength. A structure can be provided.
【0022】[0022]
【発明の効果】以上述べたように本発明は、トラス構造
用フレーム部材の接続端部が圧入嵌合される複数個の連
結溝が放射状に形成されたトラス格点用円筒状ハブにお
いて、ハブおよびフレーム部材の端部を上下から覆うカ
バーを設け、両カバーの内側に隣合うフレーム部材の端
部間の空間を埋める補強部材を周方向に間隔をおいて配
設したので、従来の諸部材をそのまま適用でき、カバー
および補強部材のみを新しく製作すればよいので、諸コ
ストの上昇を抑えながらトラスベース構造体の高強度化
を図ることができる。As described above, according to the present invention, in the truss rating cylindrical hub in which a plurality of connecting grooves into which the connecting ends of the truss structure frame member are press-fitted are radially formed, the hub is provided. Since a cover for covering the end portions of the frame member from above and below is provided, and reinforcing members for filling the space between the end portions of the adjacent frame members are arranged inside the both covers at intervals in the circumferential direction. Since it is applicable as it is, and only the cover and the reinforcing member need to be newly manufactured, it is possible to increase the strength of the truss base structure while suppressing an increase in various costs.
【0023】また、カバーは円筒状ハブとフレーム部材
の接続部を補強する補強部材としても機能する。さらに
本発明は、カバーをハブの軸線方向に分割された2つの
部材で形成したので、フレーム部材をハブに接続した
後、ハブの上下から容易に取り付けることができる。The cover also functions as a reinforcing member that reinforces the connecting portion between the cylindrical hub and the frame member. Further, according to the present invention, since the cover is formed by the two members divided in the axial direction of the hub, it is possible to easily attach the frame member from above and below after connecting the frame member to the hub.
【0024】さらに、本発明は、両端に偏平な接続端部
を有するフレーム部材と、前記接続端部が圧入嵌合され
る複数個の連結溝が放射状に形成された円筒状ハブによ
って組立式立体トラス構造物を構築するトラスベース構
造体の接合構造において、前記ハブおよびフレーム部材
の端部を上下から覆うカバーを設け、両カバーの内側に
隣合うフレーム部材の端部間の空間を埋める補強部材を
周方向に間隔をおいて配設したハブ体をトラス格点の弱
点部分または全部分に用いるようにしたので、フレーム
部材が軸線方向の荷重を受けても面内方向に曲がり難
く、組立式トラスの強度、剛性を増加させることがで
き、また特に従来困難であったドーム型やモスク型など
の大型トラスを構築することが可能となる。Furthermore, according to the present invention, a frame member having flat connecting ends at both ends thereof and a cylindrical hub having a plurality of connecting grooves radially formed therein, into which the connecting ends are press-fitted, are assembled. In a joint structure of a truss base structure for constructing a truss structure, a cover for covering the ends of the hub and the frame member from above and below is provided, and a reinforcing member for filling a space between the ends of adjacent frame members inside both covers. Since the hubs that are arranged at intervals in the circumferential direction are used for the weak points or all parts of the truss grade, the frame members are difficult to bend in the in-plane direction even if they receive axial load, and the assembly type It is possible to increase the strength and rigidity of the truss, and it is possible to construct a large truss such as a dome type or a mosque type, which has been difficult in the past.
【図面の簡単な説明】[Brief description of the drawings]
【図1】 本発明に係るトラスベース構造体の接合構造
部の実施の形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of a joint structure portion of a truss base structure according to the present invention.
【図2】 同トラスベース構造体の接合構造部の正面図
である。FIG. 2 is a front view of a joint structure portion of the truss base structure.
【図3】 図2のIII −III 線断面図である。FIG. 3 is a sectional view taken along line III-III of FIG. 2;
【図4】 (A)、(B)は上側のカバーの底面図およ
び一部を破断して示す側面図である。4 (A) and 4 (B) are a bottom view of the upper cover and a side view showing a part of the cover.
【図5】 (A)、(B)は下側のカバーの底面図およ
び一部を破断して示す側面図である。5 (A) and 5 (B) are a bottom view of a lower cover and a side view in which a part thereof is cut away.
【図6】 (A)、(B)は補強部材の正面図および側
面図である。6A and 6B are a front view and a side view of a reinforcing member.
【図7】 (A)〜(D)はそれぞれ補強部材の他の実
施の形態を示す平面図である。7A to 7D are plan views showing another embodiment of the reinforcing member.
【図8】 本発明の補強部材の取付状態を示すトラスベ
ース構造体の概念図である。FIG. 8 is a conceptual diagram of a truss base structure showing a mounting state of a reinforcing member of the present invention.
【図9】 フレーム部材の他の実施の形態を示す一部を
破断した正面図である。FIG. 9 is a partially cutaway front view showing another embodiment of the frame member.
【図10】 (A),(B)は組立式立体トラス構造物
の一例を示すドーム型トラスベース構造体の平面図およ
び正面図である。10A and 10B are a plan view and a front view of a dome-shaped truss base structure showing an example of an assembly-type space truss structure.
【図11】 従来のトラス格点を形成する接合構造部を
示す分解斜視図である。FIG. 11 is an exploded perspective view showing a joint structure portion forming a conventional truss mark.
【図12】 (A),(B)、(C)はフレーム部材の
正面図、平面図および側面図である。12 (A), (B), and (C) are a front view, a plan view, and a side view of a frame member.
1…ドーム型トラスベース構造体、2,2A…フレーム
部材、3…ハブ、5…接続端部、8…連結溝、9…ボル
ト、11…保持板、21…カバー、21A,21B…部
材、22…補強部材、23…凹陥部、25…筒部。DESCRIPTION OF SYMBOLS 1 ... Dome type truss base structure, 2, 2A ... Frame member, 3 ... Hub, 5 ... Connection end part, 8 ... Connection groove, 9 ... Bolt, 11 ... Holding plate, 21 ... Cover, 21A, 21B ... Member, 22 ... Reinforcing member, 23 ... Recessed portion, 25 ... Cylindrical portion.
Claims (3)
圧入嵌合される複数個の連結溝が放射状に形成されたト
ラス格点用円筒状ハブにおいて、ハブおよびフレーム部
材の端部を上下から覆うカバーを設け、両カバーの内側
に隣合うフレーム部材の端部間の空間を埋める補強部材
を周方向に間隔をおいて配設したことを特徴とするトラ
ス用補強部材付ハブ体。1. A cylindrical hub for truss rating, in which a plurality of connecting grooves into which the connecting ends of a truss structure frame member are press-fitted are formed radially, the ends of the hub and the frame member are arranged from above and below. A hub body with a reinforcing member for a truss, wherein a cover for covering is provided, and reinforcing members for filling a space between end portions of adjacent frame members are arranged inside the both covers at intervals in a circumferential direction.
体において、補強部材が断面形状で扇形部材、Hの字状
部材、梯子状部材、王の字状部材およびエの字状部材の
中のいずれかの形状からなることを特徴とするトラス用
補強部材付ハブ体。2. The hub body with a reinforcing member for a truss according to claim 1, wherein the reinforcing member has a sectional shape of a fan-shaped member, an H-shaped member, a ladder-shaped member, a king-shaped member and a V-shaped member. A hub body with a reinforcing member for a truss, characterized in that the hub body has any one of the inner shapes.
部材と、前記接続端部が圧入嵌合される複数個の連結溝
が放射状に形成された円筒状ハブによって組立式立体ト
ラス構造物を構築するトラスベースの接合構造におい
て、前記ハブおよびフレーム部材の端部を上下から覆う
カバーを設け、両カバーの内側に隣合うフレーム部材の
端部間の空間を埋める補強部材を周方向に間隔をおいて
配設したハブ体をトラス格点の弱点部分または全部分に
用いることを特徴とするトラスベース構造体の接合構
造。3. An assembled space truss structure comprising a frame member having flat connecting ends at both ends thereof and a cylindrical hub having a plurality of connecting grooves radially formed therein, into which the connecting ends are press-fitted. In the truss-based joint structure to be constructed, a cover is provided to cover the ends of the hub and the frame member from above and below, and a reinforcing member that fills the space between the ends of the adjacent frame members inside the both covers is circumferentially spaced. A joint structure for a truss base structure, characterized in that the hub body arranged in advance is used for all or all of the weak points of the truss.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31640795A JPH09158316A (en) | 1995-12-05 | 1995-12-05 | Hub with reinforcing member for truss and joint structure for truss base structure using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31640795A JPH09158316A (en) | 1995-12-05 | 1995-12-05 | Hub with reinforcing member for truss and joint structure for truss base structure using the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09158316A true JPH09158316A (en) | 1997-06-17 |
Family
ID=18076738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31640795A Pending JPH09158316A (en) | 1995-12-05 | 1995-12-05 | Hub with reinforcing member for truss and joint structure for truss base structure using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09158316A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013053459A (en) * | 2011-09-05 | 2013-03-21 | Kuriyamagumi:Kk | Member for protecting truss panel point part, and truss panel point structure |
CN103912065A (en) * | 2014-04-29 | 2014-07-09 | 厦门合道工程设计集团有限公司 | Integrated support joint applicable to large pulling force of large overhung pipe truss structure and manufacturing method thereof |
KR102137126B1 (en) * | 2019-11-22 | 2020-07-23 | 대영스틸산업주식회사 | aluminium truss bridge |
-
1995
- 1995-12-05 JP JP31640795A patent/JPH09158316A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013053459A (en) * | 2011-09-05 | 2013-03-21 | Kuriyamagumi:Kk | Member for protecting truss panel point part, and truss panel point structure |
CN103912065A (en) * | 2014-04-29 | 2014-07-09 | 厦门合道工程设计集团有限公司 | Integrated support joint applicable to large pulling force of large overhung pipe truss structure and manufacturing method thereof |
KR102137126B1 (en) * | 2019-11-22 | 2020-07-23 | 대영스틸산업주식회사 | aluminium truss bridge |
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