JP2811543B2 - Space truss structure with members joined using spherical joints - Google Patents
Space truss structure with members joined using spherical jointsInfo
- Publication number
- JP2811543B2 JP2811543B2 JP29225394A JP29225394A JP2811543B2 JP 2811543 B2 JP2811543 B2 JP 2811543B2 JP 29225394 A JP29225394 A JP 29225394A JP 29225394 A JP29225394 A JP 29225394A JP 2811543 B2 JP2811543 B2 JP 2811543B2
- Authority
- JP
- Japan
- Prior art keywords
- spherical joint
- chord
- spherical
- truss structure
- truss
- 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.)
- Expired - Fee Related
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は球状継手を用いて部材接
合した立体トラス構造に係り、詳しくは、大スパン建築
物に採用される長尺な弦材を貫通固定し、接合ボルトを
使用した接合装置によって位置の定まった部所に斜材を
介装して立体トラスを構築することができる球状継手を
用いて、位置の定まった二つの球状継手間に斜材を介装
しつつ、全体的に強度の向上を図るようにした立体トラ
ス構造に関するものである。これは、立体トラスからな
る屋根構造、特に、陸屋根，勾配の緩い山形屋根，アー
チ形屋根などの大スパン構造物や塔状トラス構造物に適
用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional truss structure in which members are joined using spherical joints. By using a spherical joint that can construct a space truss by inserting a diagonal material at the position determined by the joining device, the diagonal material is inserted between the two spherical joints at the fixed position, and the whole The present invention relates to a three-dimensional truss structure which is designed to improve strength. This is applied to a roof structure composed of a space truss, in particular, a large span structure such as a land roof, a gently sloped mountain-shaped roof, an arched roof, and a tower-shaped truss structure.
【０００２】[0002]
【従来の技術】大スパン構造物や塔状構造物等を多数の
パイプ材等を用いてトラス構造とする場合、個々の構造
材を順次ボルトを用いて接続するシステムトラス方式
か、全ての構造材を接合部分で突きあわせるなどして溶
接する方式のいずれかを採用するのが一般的である。2. Description of the Related Art When a large span structure or a tower-like structure is formed into a truss structure using a large number of pipes or the like, a system truss system in which individual structural materials are sequentially connected using bolts, or all structures are used. It is common to employ any of the welding methods, such as butting the materials at the joints.
【０００３】前者は、現場での接続作業に適した接合部
が予め工場で各構造材に与えられており、その結果、建
設現場への資材の搬入性がよく、また、ボルトを用いた
接続形態であって溶接に比べれば作業性は高く、労力も
軽減される利点がある。後者は現場溶接による接続形態
であるので、構造材にほとんど加工が施されず、大きい
断面の弦材を前者のように接合部ごとに短く切断してお
く必要もない。それゆえ、資材費や加工費の低廉化が図
られると共に途切れることのない弦材によって大きな軸
力の伝達も確実なものとなり、トラス設計上の力学的計
算における簡素化も図られる。[0003] In the former, a joint portion suitable for connection work on site is previously provided to each structural material at a factory, and as a result, the material can be easily transported to the construction site, and connection using bolts is performed. It has the advantage that the workability is high and the labor is reduced as compared with welding. Since the latter is a connection form by on-site welding, the structural material is hardly processed, and it is not necessary to cut a chord material having a large cross section at each joint as in the former case. Therefore, the material cost and the processing cost are reduced, and the transmission of a large axial force is ensured by the uninterrupted string material, so that the mechanical calculation in the truss design can be simplified.
【０００４】しかし、上記したシステムトラス構造にお
いて、厚肉鋼管等の大面積の弦材１を用いる場合、構造
材の接続に直径が７５ｍｍないし９０ｍｍといった極め
て太い径のボルトを使用しなければならないことが多
い。そして、極太ボルトを使用してもトラスに要求され
る強度に適合した十分な耐力を与えておくことすらでき
ない場合があること、大径ボルトを現場で締めつける作
業には依然として多大の労力が必要となること、高張力
ボルトの使用によって材料費が高騰したり、ボルトに高
度な熱処理を施しておく必要があるなどして、結局は高
価な接合部となる欠点がある。However, in the above-mentioned system truss structure, when a chord 1 having a large area such as a thick steel pipe is used, bolts having an extremely large diameter of 75 mm to 90 mm must be used to connect the structural members. There are many. And even with the use of very thick bolts, it may not even be possible to provide sufficient strength to meet the required strength of the truss. In addition, the use of a high-tensile bolt increases the material cost, and the bolt must be subjected to advanced heat treatment.
【０００５】また、溶接による場合は、例えば図６に示
すような組立構造となる。これは、予め組み立てた物を
車両で運搬することが容易でないという理由から、全て
の部材が現場で直（じか）溶接される。すなわち、長尺
な弦材２１を配置した後に細い斜材２２の端部を弦材２
１の腹部等に突きあわせて、その周囲２２ａが溶接され
る。しかし、各部材の現場での位置決めが正確となりに
くく、また、溶接作業も極めて手間の要するものとな
り、高精度な組立技術や高度な技能を有した溶接工が多
数要求され、廉価なトラスを構築するには適さない。In the case of welding, an assembly structure as shown in FIG. 6 is obtained. This is because all parts are directly welded on site, because it is not easy to transport the pre-assembled thing in the vehicle. That is, after arranging the long chord material 21, the end of the thin slant member 22 is attached to the chord material 2.
The perimeter 22a is welded to the abdomen and the like. However, the positioning of each member at the site is difficult to be accurate, and the welding work is extremely troublesome, requiring a large number of welders with high-precision assembly technology and advanced skills, and building an inexpensive truss Not suitable for.
【０００６】図７は、大スパン建築物に採用される長尺
な弦材３１を球状継手３２に貫通させて固定し、その球
状継手３２に斜材３３の端部を溶接した立体トラスの例
である。このような構造は、例えば実開昭６４−１１２
０３号公報に記載されているが、球状継手３２は球殻体
であって、その薄肉殻に弦材３１が貫通する二つの孔３
２ａ，３２ａが設けられ、それぞれの開口周囲３２ｂ，
３２ｂが弦材３１に溶接されると共に、その薄肉殻部の
表面に斜材３３が突きあわせ溶接される。この例におい
ては、図６と同様に弦材３１の軸力伝達効果が高くな
り、しかも、その軸力が球殻体３２に及ぶことが少なく
なる利点がある。FIG. 7 shows an example of a three-dimensional truss in which a long chord material 31 used for a large span building is penetrated and fixed to a spherical joint 32, and the end of a diagonal member 33 is welded to the spherical joint 32. It is. Such a structure is disclosed, for example, in Japanese Utility Model Laid-Open Publication No. 64-112.
No. 03, the spherical joint 32 is a spherical shell body, and two holes 3 through which the chord material 31 penetrates the thin shell.
2a, 32a are provided, and respective openings around 32b, 32b,
32b is welded to the chord material 31, and the oblique material 33 is butt-welded to the surface of the thin shell portion. In this example, similarly to FIG. 6, there is an advantage that the axial force transmission effect of the chord material 31 is enhanced and the axial force is less likely to reach the spherical shell 32.
【０００７】[0007]
【発明が解決しようとする課題】このように斜材３３と
の接合部に弦材３１を貫通する球殻体３２を配置してお
くと、上記したごとく球殻体３２には軸力が大きく作用
することがない。したがって、弦材３１ほどに大きい軸
力を伝達しない斜材３３を取り付ける球殻体３２に過剰
な強度を与えておく必要がなく、その構造の簡素化や軽
量化が図られる。しかし、図７における構造では、球殻
体３２を弦材３１に予め工場で溶接しておくことができ
ても、斜材３３の端部３３ｂの接合は依然として現場溶
接に頼らざるを得ず、やはり、構築能率の低下は避けら
れない難点がある。If the spherical shell 32 penetrating the chord material 31 is arranged at the joint with the diagonal member 33, the spherical shell 32 has a large axial force as described above. It does not work. Therefore, it is not necessary to give excessive strength to the spherical shell 32 to which the diagonal member 33 that does not transmit an axial force as large as the chord member 31 is provided, and the structure is simplified and the weight is reduced. However, in the structure in FIG. 7, even if the spherical shell 32 can be welded to the chord material 31 in advance at the factory, the joining of the end 33b of the diagonal member 33 still has to rely on field welding, After all, there is an inevitable difficulty in reducing the construction efficiency.
【０００８】ちなみに、特開平３−２８６０５５号公報
には、各パイプ材の端面を薄い球殻体の表面に溶接して
長尺な弦材を形成させ、その球殻体の残り面に複数本の
斜材を突き合わせ溶接し、その斜材によって球殻体を支
えるかのように接合したオクタプラッテジョイント構造
の例が記載されている。Japanese Patent Laid-Open Publication No. 3-286605 / 1991 discloses that a long chord material is formed by welding the end face of each pipe material to the surface of a thin spherical shell, and a plurality of pipes are formed on the remaining surface of the spherical shell. An example of an octaplatte joint structure in which the diagonal members are butt-welded and joined as if the spherical shell is supported by the diagonal members is described.
【０００９】これは、例えば同一高さで左右に延びるよ
うに配置された二つのワーレン立体トラスの対向する端
部を、球殻体に接合された太い竜骨部材を備えるキール
トラスによって接続する構造となっている。そのキール
トラスを構成する複数の斜材は、各ワーレン立体トラス
とは接合ボルトを用いた接合装置により締結される一
方、竜骨部材に固定した球殻体とは溶接によって接合さ
れる。また、上記した構造とは異なり、図７のようにキ
ールトラスの竜骨材（弦材）を球殻体に挿通しておくこ
ともできるが、斜材はやはり薄い球殻体の表面に突き合
わせ溶接されることになる。いずれの例においても、作
業性の面からは、図７の場合と実質的に変わるところが
ない。This has a structure in which, for example, opposite ends of two Warren space trusses arranged so as to extend left and right at the same height are connected by a keel truss having a thick keel member joined to a spherical shell. ing. The plurality of diagonal members constituting the keel truss are fastened to each of the warren three-dimensional trusses by a joining device using joining bolts, and are joined to the spherical shell fixed to the keel member by welding. Also, unlike the above structure, keel truss keel (chord) can be inserted through the spherical shell as shown in FIG. 7, but the diagonal material is also butt-welded to the surface of the thin spherical shell. Will be. In any of the examples, there is no substantial difference from the case of FIG. 7 in terms of workability.
【００１０】ところで、上記の球殻体からなる球状継手
においては、斜材の径が異なる場合でも球殻面における
接合形態は同じ要領の溶接となる。一般に、トラス構造
物の端部位においては、斜材に作用する力が中間部位の
それに比べると大きくなる傾向にある。そのために、上
記したごとく球殻体が薄肉構造であると、端部位の球状
継手は変形しやすくなるという欠点がある。ちなみに、
この端部位においては弦材を少し細くすることができる
ので球殻体の直径を意図的に小さくすれば、その球殻体
の変形を抑えることはできるが、逆に、太い斜材の先端
を溶接するスペースが確保できなくなるといった問題が
生じる。By the way, in the spherical joint composed of the above-mentioned spherical shell, even when the diameter of the diagonal member is different, the joining form on the spherical shell surface is the same as the welding. Generally, at the end portion of the truss structure, the force acting on the diagonal member tends to be larger than that at the intermediate portion. Therefore, when the spherical shell has a thin structure as described above, there is a disadvantage that the spherical joint at the end portion is easily deformed. By the way,
At this end, the chord material can be made slightly thinner, so if the diameter of the spherical shell is intentionally reduced, the deformation of the spherical shell can be suppressed. There is a problem that a space for welding cannot be secured.
【００１１】本発明は上述の問題に鑑みなされたもの
で、その目的は、球状継手に弦材を貫通させた形態を採
用しながらも、球状継手と斜材との接続のための溶接作
業を排除して接合作業の著しい能率の向上と作業労力の
大幅な軽減が図られること、弦材に大きい軸力が作用し
ても球状継手に大きく及ぶことがなく、簡素化と軽量化
それによる低廉化の図られた球状継手を用いて部材接合
することによりトラスの全体的な強度の向上が図られる
立体トラス構造を提供することである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to perform a welding operation for connecting a spherical joint and a diagonal member while adopting a configuration in which a chord is penetrated through a spherical joint. By eliminating it, the efficiency of joining work is greatly improved and the work labor is greatly reduced, and even if a large axial force acts on the chord, it does not greatly affect the spherical joint, so simplification and weight reduction and low cost It is an object of the present invention to provide a three-dimensional truss structure in which the overall strength of a truss is improved by joining members using a spherical joint which has been designed.
【００１２】[0012]
【課題を解決するための手段】本発明は、大スパン建築
物に採用される長尺な弦材が貫通固定される球状継手
に、その中実球体の中央に弦材を貫通させるための円筒
状孔が形成されると共にその円筒状孔の周囲の有実部に
球面側から球状継手の中心に向けて延びるねじ孔が形成
され、円筒状孔に弦材を貫通して予め固定した球状継手
のねじ孔に接合ボルトを螺着させる接合装置により、斜
材もしくはシステムトラス部材を球状継手間に介在固定
するようにした立体トラス構造に適用される。その特徴
とするところは、図５を参照して、トラス構造の中間部
位において、太い弦材１を貫通させるべく直径の大きい
円筒状孔２ａを形成した大径有孔球状継手２が使用され
る。そして、トラス構造の端部位には、太い弦材１に接
続されてその弦材１よりは細い弦材１Ａを貫通させ、か
つ大径有孔球状継手２にボルト接合される斜材もしくは
システムトラス部材４よりも太い部材４Ａを取り付ける
ことができる大径ねじ孔２ｄを有実部２ｆに形成した小
径有孔球状継手２Ａが使用されていることである。SUMMARY OF THE INVENTION The present invention relates to a cylindrical joint for penetrating a chord in the center of a solid sphere in a spherical joint for penetrating and fixing a long chord used in a large span building. A spherical joint is formed in which a threaded hole extending from the spherical surface side to the center of the spherical joint is formed in a solid portion around the cylindrical hole, and a chord material is penetrated through the cylindrical hole in advance. The present invention is applied to a three-dimensional truss structure in which a diagonal member or a system truss member is interposed and fixed between spherical joints by a joining device for screwing a joining bolt into the screw hole of (1). The feature is that, with reference to FIG. 5, a large-diameter perforated spherical joint 2 having a large-diameter cylindrical hole 2a formed to penetrate a thick chord member 1 is used at an intermediate portion of the truss structure. . At the end of the truss structure, a diagonal member or a system truss connected to the thick chord member 1 and penetrating a chord member 1A thinner than the chord member 1 and bolted to the large-diameter perforated spherical joint 2 is provided. A small-diameter perforated spherical joint 2A in which a large-diameter screw hole 2d to which a member 4A thicker than the member 4 can be attached is formed in the real part 2f is used.
【００１３】[0013]
【作用】弦材１がトラス構築現場の所定位置に配置され
ると、球状継手２，２間に斜材４が介装され、斜材４に
作用する軸力に適合した程度に細い接合ボルト３Ａによ
り、斜材４が作業負担の少ない締結操作でもって固定さ
れる。球状継手２は弦材１に作用する軸力の伝達を直接
受けることが少なく、したがって、その軽量化を図るべ
く有実部２ｂの厚みを、接合ボルト３Ａの螺着に必要な
程度に選定して、球状継手２の球径を可及的に小さく選
定しておくことができる。When the string member 1 is placed at a predetermined position on the truss construction site, a diagonal member 4 is interposed between the spherical joints 2 and 2, and the connecting bolt is thin enough to match the axial force acting on the diagonal member 4. By 3A, the diagonal member 4 is fixed by a fastening operation with a small work load. The spherical joint 2 is less likely to receive the transmission of the axial force acting on the chord 1 directly. Therefore, in order to reduce the weight, the thickness of the real part 2b is selected to the extent necessary for screwing the joining bolt 3A. Thus, the spherical diameter of the spherical joint 2 can be selected as small as possible.
【００１４】トラス構造の中間部位の弦材１に大径有孔
球状継手２を取り付け、端部位においては小径有孔球状
継手２Ａを採用する。小径の円筒状孔２ｅを有した球状
継手２Ａにおいては、弦材１Ａが中間部位の弦材１より
細いために、球状継手２Ａにおける有実部２ｆが大径有
孔球状継手２の有実部２ｂより厚く確保される。したが
って、その厚い有実部２ｆには大きいねじ孔２ｄを形成
させやすくなり、トラス構造の端部位では比較的大きな
軸力の作用する斜材４Ａを太い接合ボルトによって締結
することができる。このようにしておくと、弦材１，１
Ａや斜材４，４Ａに作用する軸力の相違を考慮して有実
部の肉厚の異なる球状継手を配置することができ、トラ
ス構造における強度の過不足部分の生じるのが解消さ
れ、全体的な耐力のバランスが図られる。A large-diameter perforated spherical joint 2 is attached to a chord 1 at an intermediate portion of the truss structure, and a small-diameter perforated spherical joint 2A is adopted at an end portion. In the spherical joint 2A having the small-diameter cylindrical hole 2e, since the chord material 1A is thinner than the chord material 1 in the middle part, the real part 2f of the spherical joint 2A is a real part of the large-diameter perforated spherical joint 2. 2b is ensured. Accordingly, a large screw hole 2d is easily formed in the thick solid portion 2f, and the diagonal member 4A on which a relatively large axial force acts can be fastened by a thick joint bolt at the end of the truss structure. By doing so, the strings 1,1
In consideration of the difference in the axial force acting on A and the diagonal members 4 and 4A, it is possible to arrange the spherical joints having different thicknesses of the real parts, and it is possible to eliminate the occurrence of excessive or insufficient strength in the truss structure, The balance of the overall proof stress is achieved.
【００１５】[0015]
【発明の効果】本発明によれば、トラス構造の端部位に
おいて中間部位の弦材よりも細い弦材を採用すると共に
球状継手に有実部を大きく残しておくことができ、中間
部位の斜材で使用される接合用のボルトよりも太いボル
トのためのねじ孔の形成が可能となる。これによって、
軸力の大きくなる傾向にある端部位の斜材を太くするこ
とができ、トラス構造の全体的な強度の向上が図られ
る。もちろん、球状継手を用いて部材接合した立体トラ
ス構造であるので、構築の際の締結作業において作業者
の負担軽減が促進され、システムトラス並みの高い現場
施工性と直溶接トラス並みの低廉化等の両立が実現され
る。According to the present invention, the end portion of the truss structure can adopt a chord thinner than the chord at the middle portion, and a large real part can be left at the spherical joint. It becomes possible to form screw holes for bolts that are thicker than the joining bolts used in the material. by this,
The diagonal material at the end portion where the axial force tends to increase can be made thicker, and the overall strength of the truss structure can be improved. Of course, because it is a three-dimensional truss structure that is joined with members using spherical joints, the burden on workers in the fastening work at the time of construction is reduced, the on-site workability is as high as the system truss, and the cost is as low as the direct welding truss Is achieved.
【００１６】[0016]
【実施例】以下に、本発明に係る球状継手を用いて部材
接合した立体トラス構造を、その実施例を表した図面を
基にして詳細に説明する。図２は、大スパン建築物に採
用される長尺な弦材１を球状継手２に貫通固定した立体
トラス構造物の一部を示し、弦材１が貫通する球状継手
２に接合装置３を介して斜材４が固定された構造となっ
ている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a three-dimensional truss structure in which members are joined using a spherical joint according to the present invention will be described in detail with reference to the drawings showing the embodiments. FIG. 2 shows a part of a three-dimensional truss structure in which a long chord material 1 used for a large span building is penetrated and fixed to a spherical joint 2, and a joining device 3 is attached to the spherical joint 2 through which the chord material 1 penetrates. The structure has a structure in which the diagonal member 4 is fixed through the intermediary.
【００１７】本発明は図５に表されているようなもので
あって、その詳細は後述するが手短に述べると、トラス
構造物の中間部位において太い弦材１を貫通させる大径
有孔球状継手２が使用される一方、構造物の端部位で
は、細い弦材１Ａを貫通させ大径有孔球状継手２にボル
ト接合される斜材もしくはシステムトラス部材４よりも
太い部材４Ａを取り付けることができる小径有孔球状継
手２Ａが使用される。これによって、軸力の大きくなる
傾向にある構造物の端部位の斜材を太くしてトラス構造
の全体的な強度の向上を図ろうとするものである。The present invention is as shown in FIG. 5, and will be described in detail later, but briefly, a large-diameter perforated spherical member through which a thick chord member 1 penetrates at an intermediate portion of a truss structure. While the joint 2 is used, a diagonal member or a member 4A which is larger than the system truss member 4 and which is penetrated by the thin chord material 1A and bolted to the large-diameter perforated spherical joint 2 may be attached at an end portion of the structure. A possible small diameter perforated spherical joint 2A is used. This aims to improve the overall strength of the truss structure by increasing the thickness of the diagonal member at the end of the structure, which tends to increase the axial force.
【００１８】図２を参照して、弦材１は例えば直径が２
６７ｍｍにも及ぶ太いパイプ材であり、それが予め挿通
される球状継手２の球径は例えば４７０ｍｍといったも
のである。そして、弦材１は車両による運搬の可能な適
宜な長さであり、必要に応じて構築現場で球状継手２の
存在しない中間位置５などで溶接され、長尺材とされ
る。Referring to FIG. 2, the chord 1 has a diameter of, for example, 2 mm.
It is a thick pipe material up to 67 mm, and the ball diameter of the spherical joint 2 into which it is inserted in advance is, for example, 470 mm. The chord material 1 has an appropriate length that can be transported by a vehicle, and is welded at an intermediate position 5 or the like where the spherical joint 2 does not exist at the construction site as needed, to be a long material.
【００１９】球状継手２は元来中実球体であるが、図１
に示すように、その中央に弦材１を貫通させることがで
きる程度の直径の円筒状孔２ａが形成される。この球状
継手２は例えば熱間鍛造によって製作されるが、弦材１
を挿通させた後に、円筒状孔２ａの開口の周囲で溶接６
が施され、工場から出荷される時点では球状継手２が弦
材１に固定された恰好とされている。Although the spherical joint 2 is originally a solid sphere, FIG.
As shown in the figure, a cylindrical hole 2a having a diameter enough to allow the chord material 1 to penetrate is formed in the center. The spherical joint 2 is manufactured by, for example, hot forging.
After welding, welding 6 around the opening of the cylindrical hole 2a.
The ball joint 2 is fixed to the chord 1 at the time of shipment from the factory.
【００２０】上記した球状継手２には、円筒状孔２ａの
周囲の有実部２ｂに、ボルトを螺着するため球面側から
球状継手２の中心に向けて延びるねじ孔２ｃが形成され
ている。このねじ孔２ｃは、次に構造を述べる接合装置
３によって斜材４を取り付けることができる。なお、円
筒状孔２ａは弦材１の外径とほとんど同じ直径とされて
いるが、両端部を除いて仮想線で示すように少し拡径す
るよう中ぐりが施されていてもよい。その場合には、弦
材１を工場で球状継手２に挿通させる際の作業性がよく
なる。The spherical joint 2 has a threaded hole 2c extending from the spherical surface toward the center of the spherical joint 2 for screwing a bolt into the solid portion 2b around the cylindrical hole 2a. . The diagonal member 4 can be attached to the screw hole 2c by a joining device 3 described below. Although the cylindrical hole 2a has almost the same diameter as the outer diameter of the chord material 1, it may be bored so as to slightly increase in diameter as indicated by imaginary lines except for both ends. In that case, workability when the string material 1 is inserted into the spherical joint 2 at the factory is improved.
【００２１】接合装置３は、位置の定まった二つの球状
継手２，２に斜材を接合するための装置であるので、そ
の構造は特公平４−７３４９６号公報、実公平６−１２
０８４号公報、実開平２−１８００３号公報や実開平２
−１２５１０２号公報などに開示された接合ボルトが進
退自在となったものが使用される。その一例として特公
平４−７３４９６号公報に記載された構造を図１に表し
ているので、その図を用いて、構成や作用を以下に述べ
る。Since the joining device 3 is a device for joining a diagonal member to two spherical joints 2 and 2 having fixed positions, the structure thereof is disclosed in Japanese Patent Publication No. 4-73496 and Japanese Utility Model Publication No. 6-12.
No. 084, Japanese Utility Model Application Laid-Open No. 2-1803, and Japanese Utility Model Application Laid-Open No.
A joint bolt disclosed in, for example, Japanese Unexamined Patent Application Publication No. 125125/102, which can move forward and backward, is used. As an example, FIG. 1 shows a structure described in Japanese Patent Publication No. 4-73496. The configuration and operation will be described below with reference to FIG.
【００２２】接合装置３は、球状継手２のねじ孔２ｃに
螺合する接合ボルト３Ａ，その接合ボルト３Ａを斜材１
に取り付けかつ進退自在に支持するスリーブナット３
Ｂ，接合ボルト３Ａを覆って回転力を与えるためのスリ
ーブ３Ｃ、および接合ボルト３Ａがスリーブ３Ｃ外へ突
出させるために付勢するコイルスプリング３Ｄからなっ
ている。なお、上記のスリーブナット３Ｂは、斜材４の
端部を閉止すべく溶接されたエンド部材４ａに接合装置
３を取り付けておくためのもので、エンド部材４ａにね
じ止めされた円筒体である。The joining device 3 includes a joining bolt 3A screwed into the screw hole 2c of the spherical joint 2, and the joining bolt 3A
Nut 3 that is attached to and supported to move forward and backward
B, a sleeve 3C for covering the joint bolt 3A to apply a rotational force, and a coil spring 3D for urging the joint bolt 3A to project outside the sleeve 3C. The sleeve nut 3B is for attaching the joining device 3 to an end member 4a welded to close the end of the diagonal member 4, and is a cylindrical body screwed to the end member 4a. .
【００２３】接合ボルト３Ａは両端にねじが形成され、
球状継手２のねじ孔２ｃに螺合する右ねじ３ａ、接合ボ
ルト３Ａがスリーブナット３Ｂから抜け落ちないように
するためのアンカーナット３Ｅを螺着させる左ねじ３ｂ
を有する。その間の軸胴部３ｃの右ねじ３ａ側に、六角
ボス部３ｄが形成されている。前記したスリーブ３Ｃに
は六角ボス部３ｄの外形と同じ断面形状のスリーブ孔３
ｅが形成され、スリーブ３Ｃの外面に形成された六角面
３ｆにレンチなどを掛けて回転させると、接合ボルト３
Ａは回転し、かつ、スリーブ孔３ｅ内で変位させること
ができるようになっている。The joining bolt 3A is formed with threads at both ends,
A right-hand screw 3a screwed into the screw hole 2c of the spherical joint 2, and a left-hand screw 3b for screwing an anchor nut 3E for preventing the joining bolt 3A from dropping off the sleeve nut 3B.
Having. A hexagonal boss 3d is formed on the right-hand thread 3a side of the shaft body 3c therebetween. A sleeve hole 3 having the same cross-sectional shape as the outer shape of the hexagonal boss 3d is formed in the sleeve 3C.
e is formed, and a hexagonal surface 3f formed on the outer surface of the sleeve 3C is rotated with a wrench or the like, so that the joining bolt 3
A rotates and can be displaced in the sleeve hole 3e.
【００２４】接合ボルト３Ａをねじ孔２ｃに向けて付勢
するコイルスプリング３Ｄは、スリーブ孔３ｅ内で六角
ボス部３ｄとスリーブナット３Ｂとの間の軸胴部３ｃを
取り巻くように配置される。したがって、接合装置３を
球状継手２に当接させると、図１の右側の接合装置３の
ように、接合ボルト３Ａが後退してコイルスプリング３
Ｄが圧縮され、接合ボルト３Ａがねじ孔２ｃと一致する
と、その付勢力で接合ボルト３Ａをねじ孔２ｃに向けて
押しつけるように作用する。A coil spring 3D for urging the joint bolt 3A toward the screw hole 2c is disposed so as to surround the shaft body 3c between the hexagonal boss 3d and the sleeve nut 3B in the sleeve hole 3e. Therefore, when the joining device 3 is brought into contact with the spherical joint 2, the joining bolt 3 </ b> A is retracted and the coil spring 3 is moved like the joining device 3 on the right side in FIG. 1.
When D is compressed and the joint bolt 3A coincides with the screw hole 2c, the urging force acts to press the joint bolt 3A toward the screw hole 2c.
【００２５】このような球状継手によれば、弦材１の貫
通する球状継手２に接合装置３を介して斜材４を接合す
ることができ、システムトラス方式の利点を最大限に生
かしつつ、溶接方式による弦材１の軸力の伝達を可能に
することができる。まず、工場において球状継手２の円
筒状孔２ａに弦材１が挿通され、円筒状孔２ａの開口周
囲に溶接６が施される。そして、それが例えば図３
（ａ）に細い線で示したシステムトラス部材７を小さい
円で示す球形ノード８に接合した立体トラス板９の構築
現場に運搬される。このような立体トラス板９は図示し
ない足場などによって支えられているが、その上方で弦
材１は適宜中間位置５（図２参照）において溶接され、
トラス構造に適した長さとされる。According to such a spherical joint, the diagonal member 4 can be joined to the spherical joint 2 through which the chord member 1 passes through the joining device 3, and the advantage of the system truss method can be maximized. It is possible to transmit the axial force of the string 1 by a welding method. First, in a factory, the chord material 1 is inserted into the cylindrical hole 2a of the spherical joint 2, and welding 6 is performed around the opening of the cylindrical hole 2a. And that is, for example, FIG.
(A) is transported to the construction site of a three-dimensional truss plate 9 in which a system truss member 7 indicated by a thin line is joined to a spherical node 8 indicated by a small circle. The three-dimensional truss plate 9 is supported by a scaffold or the like (not shown).
The length is suitable for the truss structure.
【００２６】球状継手２に接合されるシステムトラス部
材としての斜材４には、その両端部に接合装置３，３が
取り付けられており、その斜材４が、弦材１に固定した
球状継手２と他の並行する弦材１の球状継手２との間
や、弦材１に固定した球状継手２と立体トラス板９の対
応した位置にある球形ノード８との間に配置される。弦
材１，１の配置によって球状継手２の位置は定まってお
り、また、立体トラス板９の球形ノード８の位置も固定
的であるので、それぞれの間に介装されるべき斜材４の
位置では球状継手２，２等の間隔は、予め設計された長
さ通りの正寸となっている。もちろん、一方端の接合装
置３のスリーブ３Ｃの端面から他方端の接合装置のスリ
ーブの端面までの長さＬ（図１参照）も、機械加工によ
って上記した正寸と同じ長さとなっている。The diagonal member 4 serving as a system truss member to be joined to the spherical joint 2 has joining devices 3 and 3 attached to both ends thereof, and the diagonal member 4 is fixed to the chord member 1 by a spherical joint. 2 and the ball joint 2 of another parallel string member 1 or between the spherical joint 2 fixed to the string member 1 and the spherical node 8 at a corresponding position of the space truss plate 9. The position of the spherical joint 2 is determined by the arrangement of the chords 1 and 1, and the position of the spherical node 8 of the space truss plate 9 is also fixed. At the position, the distance between the spherical joints 2, 2 and the like is a regular size according to the length designed in advance. Of course, the length L (see FIG. 1) from the end face of the sleeve 3C of the joining device 3 at one end to the end surface of the sleeve of the joining device at the other end is also the same length as the above-mentioned exact size by machining.
【００２７】上記の空間に斜材４を配置しようとすると
き、スリーブ３Ｃの端面から僅かであっても接合ボルト
３Ａが突出していると介装作業は困難を極める。しか
し、前述したような接合装置３によれば、突出している
接合ボルト３Ａを球状継手２の表面や球形ノード８の表
面と接触させることによって、コイルスプリング３Ｄを
圧縮させながらスリーブ３Ｃ内に退避させることができ
る（図１の右側の接合装置３を参照）。接合ボルト３Ａ
の先端がねじ孔２ｃに一致すると、コイルスプリング３
Ｄの復元力により右ねじ３ａの先端がねじ孔２ｃに嵌ま
り込む。接合ボルト３Ａが依然として付勢された状態に
あり、スリーブ３Ｃを右回転させると接合ボルト３Ａも
回転してねじ孔２ｃに螺合する。ある程度回転すると、
コイルスプリング３Ｄは自由状態となるが、その時点で
はすでに右ねじ３ａがねじ孔２ｃに噛みあっており、コ
イルスプリング３Ｄの付勢力がなくても、スリーブ３Ｃ
の回転によって接合ボルト３Ａをねじ孔２ｃに深く螺着
させることができる。When the diagonal member 4 is to be arranged in the above space, the interposition work is extremely difficult if the connecting bolt 3A protrudes even slightly from the end face of the sleeve 3C. However, according to the joining device 3 as described above, the projecting joining bolt 3A is brought into contact with the surface of the spherical joint 2 or the surface of the spherical node 8, thereby retracting the coil spring 3D into the sleeve 3C while compressing it. (See the joining device 3 on the right in FIG. 1). Joint bolt 3A
Of the coil spring 3 when the tip of
The tip of the right-hand screw 3a fits into the screw hole 2c by the restoring force of D. The joining bolt 3A is still urged, and when the sleeve 3C is rotated clockwise, the joining bolt 3A is also rotated and screwed into the screw hole 2c. After some rotation,
The coil spring 3D is in a free state. At this point, the right-hand screw 3a is already engaged in the screw hole 2c, and even if there is no urging force of the coil spring 3D, the sleeve 3C
By this rotation, the joining bolt 3A can be screwed deeply into the screw hole 2c.
【００２８】このようにして、球状継手２や球形ノード
８に斜材４が次々と接合される。弦材１の球状継手２と
他の弦材１の球状継手２との間にシステムトラス部材４
を介装した場合には、図３（ｂ）のような接合形態とな
る。もちろん、図４の（ａ）および（ｂ）に示すよう
に、左右二つのワーレン立体トラス１０，１０を接続す
るためのキールトラス１１に適用することもできる。な
お、以上の説明は、斜材４を介装すべき空間が斜材４の
長さＬに一致しておりかつ球状継手２，２が不動状態に
ある場合を例にして述べたが、トラスの構築手順によっ
ては一方の球状継手２を少し変位させることができると
き、接合装置として、コイルスプリング３Ｄを備えず、
また、右ねじ３ａの先端がスリーブ３Ｃの端面から常時
突出しているような簡易構造のものを使用することがで
きる。In this way, the diagonal members 4 are joined to the spherical joint 2 and the spherical node 8 one after another. A system truss member 4 is provided between the spherical joint 2 of the chord 1 and the spherical joint 2 of the other chord 1.
In this case, a joint form as shown in FIG. 3B is obtained. Of course, as shown in FIGS. 4A and 4B, the present invention can be applied to a keel truss 11 for connecting two left and right Warren space trusses 10, 10. In the above description, the case where the space in which the diagonal member 4 is to be interposed is equal to the length L of the diagonal member 4 and the spherical joints 2, 2 are in an immobile state has been described as an example. When one of the spherical joints 2 can be slightly displaced depending on the construction procedure, no coil spring 3D is provided as a joining device.
In addition, a simple structure in which the tip of the right-hand screw 3a always projects from the end face of the sleeve 3C can be used.
【００２９】このようにして組み立てられたトラス構造
物では、弦材１がトラス構造体を縦通した状態にあり、
その弦材１に作用する軸力が球状継手２に邪魔されるこ
となく軸方向へ伝達される。したがって、球状継手２に
軸力が大きく作用することがなく、球状継手２に弦材１
の軸力を加味した耐力を与えておく必要がない。すなわ
ち、通常は弦材１よりも小さな力の作用する斜材４に見
合った程度の強度を与えておくだけでよくなる。それゆ
え、球状継手２は図１に示したごとくの簡素な構造とな
り、かつ、可及的に軽量化が図られる。逆に言えば、軽
量化を図るべく有実部２ｂの厚みを、接合ボルト３Ａの
螺着に必要な強度が確保される程度に選定し、球状継手
２の球径を可及的に小さくしておくこともできる。In the truss structure thus assembled, the chord 1 is in a state of vertically passing through the truss structure.
The axial force acting on the chord 1 is transmitted in the axial direction without being disturbed by the spherical joint 2. Therefore, the axial force does not greatly act on the spherical joint 2 and the chord 1
There is no need to provide a proof stress that takes into account the axial force of the shaft. That is, normally, it is sufficient to provide only the strength corresponding to the diagonal member 4 on which a smaller force acts than the chord member 1. Therefore, the spherical joint 2 has a simple structure as shown in FIG. 1, and the weight is reduced as much as possible. Conversely, in order to reduce the weight, the thickness of the solid portion 2b is selected so that the strength required for screwing the joining bolt 3A is secured, and the ball diameter of the spherical joint 2 is reduced as much as possible. You can keep it.
【００３０】このように、球状継手の有実部にねじ孔を
形成することにより、接合ボルトを螺着させるに十分な
深さのねじ孔を確保することができる。従来技術のとこ
ろで述べた球殻体では得られない実用性の高い効果、す
なわち、球状継手が変形したりねじ孔の加工代が得られ
なくなることが、高い剛性を保持した有実部の存在によ
って回避できる効果が発揮される。また、球殻体の場合
には、例えば鋼板をプレス加工した二つの中空半球体を
端縁周囲で溶接することにより中空球状体を製作し、そ
の後に、弦材の挿通する孔が穿設されるが、本発明に採
用される球状継手は円筒状孔の形成を含めて熱間鍛造に
よって少ない工数で簡単に成形することができる利点が
ある。As described above, by forming the screw hole in the real part of the spherical joint, it is possible to secure a screw hole having a sufficient depth for screwing the joining bolt. The high practical effect that cannot be obtained with the spherical shell described in the prior art, that is, the spherical joint is deformed or the machining allowance of the screw hole cannot be obtained due to the existence of the solid part that maintains high rigidity The effect that can be avoided is exhibited. In the case of a spherical shell, a hollow spherical body is manufactured by welding, for example, two hollow hemispheres obtained by pressing a steel plate around an edge, and thereafter, a hole through which a chord material is inserted is formed. However, the spherical joint employed in the present invention has an advantage that it can be easily formed with a small number of steps by hot forging including formation of a cylindrical hole.
【００３１】さらに、システムトラス部材の接合に現場
溶接が採用されることはないので、結局は、熟練と時間
を要する溶接作業を排除して、接合作業の簡便化や迅速
化が実現される。しかも、使用されるボルトは接合装置
に内蔵した細い接合ボルト、すなわち、システムトラス
部材に作用する軸力に見合った太さとしておくことがで
き、その締結作業は極めて容易で労力の大幅な軽減も図
られる。このように、システムトラス方式の高い現場施
工性と直溶接トラス方式の利点の両立が可能となり、そ
れに従い、弦材における軸力伝達能力の向上と球状継手
の過大強度の回避、さらには、球状継手における接合部
の剛性増大も実現される。Further, since the field welding is not employed for joining the system truss members, the welding operation requiring skill and time is eliminated, and the joining operation is simplified and speeded up. In addition, the bolts used can be made to have a thickness suitable for the axial force acting on the system truss members, i.e., thin joint bolts built into the joining device, and the fastening work is extremely easy and greatly reduces labor. It is planned. In this way, it is possible to achieve both the high on-site workability of the system truss method and the advantages of the direct welding truss method, and accordingly to improve the axial force transmission capacity of the chord material, avoid the excessive strength of the spherical joint, and furthermore, An increase in the rigidity of the joint at the joint is also realized.
【００３２】ちなみに、球状継手を貫通する弦材には途
中でパイプ内空間を遮断するものがないので、内部にプ
レストレス用のワイヤやＰＣ鋼棒を内装させておくこと
ができる。それゆえに、プレストレス工法の導入も可能
となり、大スパンのトラス構造物に一層高い耐力を付与
することができるようにもなる。Incidentally, since there is nothing in the chord material penetrating the spherical joint that interrupts the space inside the pipe on the way, a prestressing wire or a PC steel rod can be provided inside. Therefore, the prestressing method can be introduced, and a higher strength can be imparted to a large span truss structure.
【００３３】図５は、弦材の太さが途中で異なる場合に
前述した球状継手やトラス構造を適用した例である。ト
ラス構造物においては、一般的に、中間部位の弦材より
も端部位での弦材の軸力が小さくなり、その逆に端部位
の斜材には中間部位のそれより大きな軸力が作用する。
このようなことを考慮して、弦材１の端部位（図示は右
端部位）にリデューサ１２を溶接して、中太の弦材１Ａ
が接続されることがある。FIG. 5 shows an example in which the above-described spherical joint or truss structure is applied to a case where the thickness of the chord material varies in the middle. In a truss structure, in general, the axial force of the chord at the end portion is smaller than that of the chord at the middle portion, and conversely, a greater axial force acts on the diagonal member at the end portion than at the middle portion. I do.
In consideration of such a situation, the reducer 12 is welded to an end portion (the right end portion in the drawing) of the chord material 1 so that the middle chord chord material 1A
May be connected.
【００３４】この場合、トラス構造物の中間部位におい
て大径有孔球状継手２が使用され、トラス構造物の端部
位にあっては、小径有孔球状継手２Ａが使用される。す
なわち、大径有孔球状継手２には弦材１に見合った直径
の大きい円筒状孔２ａが形成され、小径有孔球状継手２
Ａには弦材１Ａに適合した直径の小さな円筒状孔２ｅが
形成される。この小径有孔球状継手２Ａでは、有実部２
ｆの肉厚を大径有孔球状継手２におけるそれよりも大き
く確保できることから、その有実部２ｆには、中間部位
のシステムトラス部材４よりも太い斜材４Ａを取り付け
るための大径ねじ孔２ｄを形成することが可能となる。In this case, a large-diameter perforated spherical joint 2 is used at an intermediate portion of the truss structure, and a small-diameter perforated spherical joint 2A is used at an end portion of the truss structure. That is, the large-diameter perforated spherical joint 2 is formed with a large-diameter cylindrical hole 2a corresponding to the chord material 1, and the small-diameter perforated spherical joint 2 is formed.
A has a cylindrical hole 2e having a small diameter adapted to the chord 1A. In this small-diameter perforated spherical joint 2A, the solid portion 2
Since the thickness of f can be larger than that of the large-diameter perforated spherical joint 2, a large-diameter screw hole for attaching a diagonal member 4A thicker than the system truss member 4 at the intermediate portion is provided at the solid portion 2f. 2d can be formed.
【００３５】上記の説明から分かるように、図５におい
ては、小径有孔球状継手２Ａの球径が大径有孔球状継手
２のそれと同等に表されているが、トラス構造物の端部
位における斜材を特に太くする必要がない場合には、小
径有孔球状継手２Ａを大径有孔球状継手２よりも小さく
しておくことができる。いずれにしても、トラス構造物
において各部材に作用する軸力を考慮したうえで球状継
手の軽量化を図った最適設計が可能となり、しかも、ト
ラス構造物の全体的にバランスのとれた強度の向上が図
られる。この場合に、円筒状孔の周囲に有実部を備えた
球状継手を使用しているので、接合されるべき斜材４の
太さ、すなわち、斜材４に作用する軸力の大小に応じた
ボルト接合が実現され、球殻体とした球状継手では得ら
れない実用性の極めて高い効果が発揮される。As can be understood from the above description, in FIG. 5, the spherical diameter of the small-diameter perforated spherical joint 2A is represented as that of the large-diameter perforated spherical joint 2, but at the end of the truss structure. If it is not necessary to make the diagonal material particularly thick, the small-diameter perforated spherical joint 2A can be made smaller than the large-diameter perforated spherical joint 2. In any case, it is possible to optimize the design of the truss structure by reducing the weight of the spherical joint in consideration of the axial force acting on each member in the truss structure. Improvement is achieved. In this case, since a spherical joint having a solid portion around the cylindrical hole is used, it depends on the thickness of the diagonal member 4 to be joined, that is, according to the magnitude of the axial force acting on the diagonal member 4. This realizes an extremely high practical effect that cannot be obtained with a spherical joint made of a spherical shell.
【図１】 球状継手を適用した立体トラス構造物の部分
拡大断面図。FIG. 1 is a partially enlarged sectional view of a space truss structure to which a spherical joint is applied.
【図２】 立体トラス構造物における組立部分図。FIG. 2 is an assembled partial view of the space truss structure.
【図３】 （ａ）は球状継手を採用した立体トラス構造
を立体トラス板に適用した平面図、（ｂ）はその正面
図。FIG. 3A is a plan view in which a space truss structure employing a spherical joint is applied to a space truss plate, and FIG. 3B is a front view thereof.
【図４】 （ａ）は立体トラス構造をキールトラスとし
て応用した場合のトラス構造物の平面図、（ｂ）はその
正面図。FIG. 4A is a plan view of a truss structure when the three-dimensional truss structure is applied as a keel truss, and FIG. 4B is a front view thereof.
【図５】 本発明に係る構造を示し、中間部位と端部位
において有実部の肉厚が異なる球状継手が使用されてい
るトラス構造物の組立部分図。FIG. 5 is an assembly partial view of a truss structure showing a structure according to the present invention and using a spherical joint having a different thickness in a solid portion between an intermediate portion and an end portion.
【図６】 溶接によって接合された先行技術としてのト
ラス構造物の部分正面図。FIG. 6 is a partial front view of a prior art truss structure joined by welding.
【図７】 球殻体に弦材を挿通させた先行技術としての
トラス構造物の部分正面図。FIG. 7 is a partial front view of a truss structure as a prior art in which a chord is inserted through a spherical shell.
【符号の説明】 １…弦材（太い弦材）、１Ａ…弦材
（細い弦材）、２…球状継手（大径有孔球状継手）、２
Ａ…小径有孔球状継手、２ａ，２ｅ…円筒状孔、２ｂ…
有実部、２ｃ…ねじ孔、２ｄ…大径ねじ孔、２ｆ…有実
部、３…接合装置、３Ａ…接合ボルト、４…斜材（シス
テムトラス部材）、４Ａ…斜材（太い部材）。[Explanation of Signs] 1 ... chord (thick chord), 1A ... chord (thin chord), 2 ... spherical joint (large diameter perforated spherical joint), 2
A: Small diameter perforated spherical joint, 2a, 2e: Cylindrical hole, 2b:
Solid part, 2c ... screw hole, 2d ... large diameter screw hole, 2f ... solid part, 3 ... joining device, 3A ... joining bolt, 4 ... diagonal material (system truss member), 4A ... diagonal material (thick member) .
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安井 信行 兵庫県神戸市東灘区魚崎南町３丁目６番 24号 川鉄建材工業株式会社技術研究所 内 (56)参考文献 特開 平１−233027（ＪＰ，Ａ) 実公 昭60−33948（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) E04B 1/58 E04B 1/19 E04B 1/342──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Nobuyuki Yasui 3-6-24 Uozaki Minamicho, Higashinada-ku, Kobe City, Hyogo Prefecture Inside the Technical Research Laboratory, Kawatetsu Construction Materials Co., Ltd. (56) References JP-A 1-233027 (JP) , A) Jiko 60-33948 (JP, Y2) (58) Field surveyed (Int. Cl. 6 , DB name) E04B 1/58 E04B 1/19 E04B 1/342
Claims (1)
が貫通固定される球状継手には、その中実球体の中央に
前記弦材を貫通させるための円筒状孔が形成されると共
に、該円筒状孔の周囲の有実部には球面側から前記球状
継手の中心に向けて延びるねじ孔が形成され、上記円筒
状孔に弦材を貫通して予め固定した前記球状継手の前記
ねじ孔に接合ボルトを螺着させる接合装置により、斜材
もしくはシステムトラス部材を前記球状継手間に介在固
定するようにした立体トラス構造において、 トラス構造の中間部位にあっては、太い弦材を貫通させ
るべく直径の大きい円筒状孔を形成した大径有孔球状継
手が使用され、 トラス構造の端部位においては、前記太い弦材に接続さ
れて該弦材よりは細い弦材を貫通させ、かつ前記大径有
孔球状継手にボルト接合される斜材もしくはシステムト
ラス部材よりも太い部材を取り付けることができる大径
ねじ孔を有実部に形成した小径有孔球状継手が使用され
ていることを特徴とする球状継手を用いて部材接合した
立体トラス構造。1. A spherical joint used for a large span building, through which a long chord is penetrated and fixed, is formed with a cylindrical hole at the center of a solid sphere for penetrating the chord. At the same time, a threaded hole extending from the spherical surface toward the center of the spherical joint is formed in a solid portion around the cylindrical hole. In a three-dimensional truss structure in which a diagonal member or a system truss member is interposed and fixed between the spherical joints by a joining device for screwing a joining bolt into the screw hole, a thick chord member is provided at an intermediate portion of the truss structure. A large-diameter perforated spherical joint formed with a large-diameter cylindrical hole is used to penetrate the truss structure, and at an end portion of the truss structure, connected to the thick chord material to penetrate a chord material thinner than the chord material. And the large diameter perforated spherical joint The use of a spherical joint characterized by the fact that a small-diameter perforated spherical joint with a large-diameter threaded hole formed in the solid part capable of mounting a diagonal member to be jointed or a member thicker than the system truss member is used. Three-dimensional truss structure with joined members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29225394A JP2811543B2 (en) | 1994-10-31 | 1994-10-31 | Space truss structure with members joined using spherical joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29225394A JP2811543B2 (en) | 1994-10-31 | 1994-10-31 | Space truss structure with members joined using spherical joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08128115A JPH08128115A (en) | 1996-05-21 |
| JP2811543B2 true JP2811543B2 (en) | 1998-10-15 |
Family
ID=17779419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29225394A Expired - Fee Related JP2811543B2 (en) | 1994-10-31 | 1994-10-31 | Space truss structure with members joined using spherical joints |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2811543B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397702B (en) * | 2013-07-19 | 2015-10-07 | 东南大学 | A kind of composite material connection jiont for net frame point and method |
| CN103758215B (en) * | 2014-01-06 | 2016-02-17 | 同济大学 | Prevent the slidably friction-type connection node of trussed construction generation Progressive Collapse |
| CN103898990B (en) * | 2014-04-10 | 2016-04-20 | 北京工业大学 | One is threaded individual layer spatial mesh structure |
| CN104110072A (en) * | 2014-07-01 | 2014-10-22 | 浙江省电力设计院 | Hemispherical hollow welding sphere joint for large-span space steel structure support |
| CN109386052A (en) * | 2018-11-29 | 2019-02-26 | 江苏亨通高压海缆有限公司 | Hollow bolt ball net rack |
| CN117888628B (en) * | 2024-03-14 | 2024-05-28 | 南安市装备制造业技术研究院 | Building steel structure with anti-seismic function |
-
1994
- 1994-10-31 JP JP29225394A patent/JP2811543B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08128115A (en) | 1996-05-21 |
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