JPH06307008A - Tension chord beam structure - Google Patents

Tension chord beam structure

Info

Publication number
JPH06307008A
JPH06307008A JP9468693A JP9468693A JPH06307008A JP H06307008 A JPH06307008 A JP H06307008A JP 9468693 A JP9468693 A JP 9468693A JP 9468693 A JP9468693 A JP 9468693A JP H06307008 A JPH06307008 A JP H06307008A
Authority
JP
Japan
Prior art keywords
tension
stringed
cord
string
fixed
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.)
Granted
Application number
JP9468693A
Other languages
Japanese (ja)
Other versions
JP3254613B2 (en
Inventor
Osamu Sadahiro
修 貞広
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimizu Construction Co Ltd
Shimizu Corp
Original Assignee
Shimizu Construction Co Ltd
Shimizu Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shimizu Construction Co Ltd, Shimizu Corp filed Critical Shimizu Construction Co Ltd
Priority to JP09468693A priority Critical patent/JP3254613B2/en
Publication of JPH06307008A publication Critical patent/JPH06307008A/en
Application granted granted Critical
Publication of JP3254613B2 publication Critical patent/JP3254613B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To effectively use a space in a room even with a structure in which several tension chord members are laid in parallel with one another so as to cover a large space. CONSTITUTION:Tension chord members 22 are laid, being curved in their center parts, between a pair of stationary structures 21 which are opposed and spaced by a predetermined distance to each other, and are secured at their center positions with a support member 23. First wires 24 are stretched between the support member 23 and the opposite ends of the tension chord members 22. A plurality of thus constructed tension chord beams are arranged so that the tension chord members are laid in substantially parallel with one another, and further, tension chord members are coupled with one another by means of a truss beam 26 which extends in a direction crossing the tension chord members while second wires 25 are hung down from the opposite ends of the truss beam. The lower ends of the second wires 25 are fixed to retainers positioned therebelow, and then the first and second wires are subjected to tension.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、長大スパン構造物に適
用される張弦梁構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a string beam structure applied to a long span structure.

【0002】[0002]

【従来の技術】周知のように、大規模建築構造物には、
その広い床面積を利用し、展示会場やイベントホールな
どとして利用する、いわゆる長大スパン構造物がある。
この構造物は、その屋内において柱の使用を抑えること
により、利用できる床面積をできるだけ広くするもので
ある。
2. Description of the Related Art As is well known, large-scale building structures include
There is a so-called long span structure that uses the large floor area and is used as an exhibition hall or event hall.
This structure maximizes the usable floor area by suppressing the use of columns inside the structure.

【0003】この長大スパン構造物の構築技術の一つと
して張弦梁構造が知られている。この技術は、梁あるい
は屋根として機能する張弦材を緊張材の緊張力により緊
張状態に保ち、その反力によって張弦材の自重あるいは
張弦材への積雪などによる荷重を支持するものである。
A stringed beam structure is known as one of the techniques for constructing such a long span structure. This technique is to maintain a tension string material that functions as a beam or a roof in a tensioned state by the tension force of the tension material, and to support the weight of the tension string material or the load due to snow accumulated on the tension string material due to the reaction force.

【0004】図6は、従来の張弦梁構造の概略図を示し
たものである。
FIG. 6 is a schematic view of a conventional stringed beam structure.

【0005】図に示したように、基礎構造体Gには所定
の間隔に離間して対向配置された一対の柱脚1,1が構
築されている。この柱脚1,1の間にはその中間部を上
方に湾曲させた屋根2が配設されている。この屋根2の
中間位置Cには鉛直下方に延びる支持部材3が固定され
ている。屋根2の両端2a,2aと支持部材3との間に
は鋼線4が配設されている。
As shown in the figure, the foundation structure G is constructed with a pair of column bases 1 and 1 facing each other at a predetermined interval. A roof 2 having an intermediate portion curved upward is disposed between the column bases 1 and 1. A support member 3 extending vertically downward is fixed to an intermediate position C of the roof 2. A steel wire 4 is arranged between both ends 2 a of the roof 2 and the support member 3.

【0006】上記の構成では、屋根2の両端2a,2a
間に張設した鋼線4に張力を付与し、この張力にともな
って屋根2に反力が付与され、この反力によって屋根2
自身の荷重が支持されるようになっている。
In the above structure, both ends 2a, 2a of the roof 2 are
Tension is applied to the steel wire 4 stretched between them, and a reaction force is applied to the roof 2 with this tension, and the reaction force causes the roof 2 to move.
It is designed to support its own load.

【0007】しかしながら、上述した張弦梁構造には次
のような課題が存在する。すなわち、前記構成の張弦梁
構造は、屋根2に鋼線4の張力に伴う反力が付与されて
いるために、梁せいの大きさに比べて上下の弦を構成す
る屋根2および鋼線4の断面剛性が小さい。したがっ
て、屋根2に積雪などによって重荷重が負荷されると、
屋根2にたわみが生じてしまい、構造物の安全性の面で
有害となる変形が生ずる問題があった。
However, the above-described strut beam structure has the following problems. That is, in the stringed beam structure having the above-described structure, since the reaction force associated with the tension of the steel wire 4 is applied to the roof 2, the roof 2 and the steel wire 4 that form the upper and lower chords in comparison with the size of the beam sill. Small cross-sectional rigidity. Therefore, if a heavy load is applied to the roof 2 due to snowfall,
There is a problem in that the roof 2 is bent, which causes deformation that is harmful in terms of safety of the structure.

【0008】この問題を解決するために、出願人は、図
7に示すような張弦梁構造を発明して出願している(特
願平4−291794号参照)。
In order to solve this problem, the applicant has invented and applied for a stringed beam structure as shown in FIG. 7 (see Japanese Patent Application No. 4-291794).

【0009】すなわち、所定距離に離間して対向配置さ
れた一対の固定構造体1間にその中間部を上方に湾曲さ
せて屋根(張弦材)2が配設されており、この屋根2の
中間位置に鉛直下方に延びる支持部材3が固定されてお
り、屋根2の両端部と支持部材3との間に鋼線4が配設
され、前記屋根2にその長さ方向に所定の間隔をおいて
複数本の鋼線7が垂下されるとともに、これらの鋼線7
の下端部7aが屋根2の下方に位置する引留部8に固定
されている。なお、前記鋼線4及び鋼線7には緊張力が
付与されている。
That is, a roof (stringed string material) 2 is disposed with a middle portion thereof curved upward between a pair of fixed structures 1 that are opposed to each other with a predetermined distance therebetween. A support member 3 extending vertically downward is fixed to the roof 2, steel wires 4 are arranged between both end portions of the roof 2 and the support member 3, and the roof 2 is provided with a predetermined interval in the length direction thereof. A plurality of steel wires 7 are hung down and these steel wires 7
The lower end portion 7a of the is fixed to the towing portion 8 located below the roof 2. A tension force is applied to the steel wires 4 and 7.

【0010】[0010]

【発明が解決しようとする課題】しかしながら、図7に
示す従来の張弦梁構造においては、多数の鋼線7が屋根
2から垂下されるので、これらの鋼線7が室内に配置さ
れることになって屋根2の下方の空間の有効利用を図る
ことができないといった問題がある。
However, in the conventional stringed beam structure shown in FIG. 7, since a large number of steel wires 7 are hung from the roof 2, these steel wires 7 are arranged indoors. There is a problem in that the space below the roof 2 cannot be effectively used.

【0011】本発明は、上記事情に鑑みてなされたもの
で、張弦梁に重荷重が負荷された場合に安全面で有害と
なる張弦梁の変形を抑えることができ、しかも、張弦梁
の下方の空間を有効利用することができる張弦梁構造を
提供することを目的とする。
The present invention has been made in view of the above circumstances, and it is possible to suppress deformation of the string beam, which is harmful in terms of safety when a heavy load is applied to the string beam, and moreover, the space below the string beam is prevented. An object is to provide a stringed beam structure that can be effectively used.

【0012】[0012]

【課題を解決するための手段】本発明の張弦梁構造は、
所定距離に離間して対向配置された一対の固定構造体間
にその中央部を上方へ湾曲させて張弦材が配設され、該
張弦材の中間位置に鉛直下方へ延び出る支持部材が固定
され、前記張弦材の両端部と支持部材との間に第1の索
状体が配置されて構成された複数の張弦梁が、各張弦材
が互いに略平行になるように配置され、さらに、各張弦
材がこの張弦材と交差する方向に延びるトラス梁により
連結されるとともに、このトラス梁の両端部に第2の索
状体が垂下され、この第2の索状体の下端部が下方に位
置する引留部に固定され、前記第1及び第2の索状体に
緊張力が付与されていることを特徴とする。
The stringed beam structure of the present invention comprises:
A stringing member is disposed with a central portion thereof curved upward between a pair of fixing structures that are arranged facing each other at a predetermined distance, and a supporting member extending vertically downward is fixed to an intermediate position of the stringing member. A plurality of tension beams configured by arranging the first cords between both ends of the tension string member and the support member are arranged so that the tension members are substantially parallel to each other. They are connected by truss beams extending in the intersecting direction, and a second cord-like member is hung at both ends of the truss beam, and the lower end of the second cord-like member is fixed to a retracting portion located below. The tension force is applied to the first and second cords.

【0013】[0013]

【作用】本発明の張弦材構造によれば、複数の張弦材が
互いに略平行になるように配置され、各張弦材がトラス
梁により連結されるとともに、このトラス梁の両端部に
垂下された第2の索状体の下端部を引留部に固定するこ
とにより、第2の索状体に緊張力を付与するようにして
いるので、第2の索状体に加えた緊張力がトラス梁を介
して各張弦材に作用して各張弦材がたわむとともに、第
1の索状体に緊張力が作用する。このように、第2の索
状体に加えた緊張力が各張弦材にプレストレスとして作
用するので、張弦材に荷重が作用したときにおいてもこ
の荷重がプレストレスにより相殺され、荷重負荷時にお
けるたわみが極めて小さくなる。
According to the structure of the stringed string material of the present invention, a plurality of the stringed string members are arranged so as to be substantially parallel to each other, the stringed string members are connected by the truss beams, and the second string members are hung at both ends of the truss beams. By fixing the lower end portion of the cord-like member to the towing portion, the tension force is applied to the second cord-shaped member, so that the tension force applied to the second cord-shaped member is passed through the truss beam. While acting on each of the string members and bending of each string member, a tension force acts on the first cord-shaped body. In this way, since the tension force applied to the second cord acts on each stringed material as prestress, even when a load is applied to the stringed material, this load is offset by the prestress, and the deflection under load is caused. It becomes extremely small.

【0014】また、張弦材が互いに略平行になるように
配置されて広いスペースを覆っていても、各張弦材を相
互に連結するトラス梁の両端部に垂下された第2の索状
体の下端部を引留部に固定するようにしているので、広
いスペースの両端部のみに第2の索状体を垂下させれば
よく、室内に第2の索状体が垂下されず、室内の有効利
用を図ることができる。
Further, even if the stringed members are arranged so as to be substantially parallel to each other and cover a wide space, the lower end portion of the second cord-like member suspended at both ends of the truss beam connecting the stringed members to each other. Since the second cord is fixed only to the both ends of the wide space, the second cord is not hung in the room, and the effective use of the room is ensured. Can be planned.

【0015】[0015]

【実施例】以下に、図1を参照して、本発明の一実施例
の張弦梁構造について説明する。図1に示すように、所
定距離に離間して一対の固定構造体21が対向配置され
ている。この固定構造体21は、本実施例の張弦梁構造
によって覆われる例えば体育館の側壁を構成する。固定
構造体21間にその中央部を上方へ湾曲させて複数の張
弦材22が互いに平行に配設され、各張弦材22の中間
位置には鉛直下方へ延び出る支持部材23が固定されて
いる。各張弦材22の両端部と支持部材23の先端部と
の間には第1の索状体24が配置されている。支持部材
23の側部には、各張弦梁22を互いに連結するように
トラス梁26が連結されている。このトラス梁26の両
端部には第2の索状体25が垂下されており、これらの
第2の索状体25の下端部は引留部27に固定され、第
2の索状体25に緊張力が付与されている。なお、第2
の索状体25に緊張力が付与されることにより、張弦材
22がたわみ第1の索状体24にも緊張力が付与され
る。また、張弦材22の上面には図示しない屋根材例え
ばシート材が取り付けられる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tension beam structure of an embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 1, a pair of fixed structures 21 are arranged facing each other with a predetermined distance therebetween. The fixed structure 21 constitutes, for example, a side wall of a gymnasium covered by the stringed beam structure of the present embodiment. A plurality of string members 22 are arranged in parallel with each other with the central portion thereof curved upward between the fixed structures 21, and a supporting member 23 extending vertically downward is fixed to an intermediate position of each string member 22. A first cord-like body 24 is arranged between both ends of each of the string members 22 and the tip of the supporting member 23. A truss beam 26 is connected to a side portion of the support member 23 so as to connect the tension string beams 22 to each other. The second cords 25 are hung on both ends of the truss beam 26, and the lower end portions of the second cords 25 are fixed to the retracting portion 27 so that the second cords 25 are fixed to the second cords 25. Tension is given. The second
When the tension is applied to the cord 25, the stringing member 22 is bent and the tension is also applied to the first cord 24. Further, a roof material (not shown) such as a sheet material is attached to the upper surface of the stringed material 22.

【0016】このように第2の索状体25の下端部を引
留部27に固定することにより緊張力を付与して、トラ
ス梁26を介して各張弦材22にプレストレスが付与さ
れているので、積雪等により荷重が張弦材22に作用し
ても作用する荷重から前記プレストレス荷重分が相殺さ
れ、張弦材22の変形量を極めて小さくすることができ
る。
Since the lower end of the second cord 25 is fixed to the towing portion 27 in this manner, a tension force is applied and each tension string 22 is prestressed through the truss beam 26. Even if a load acts on the stringed string material 22 due to snowfall or the like, the amount of the prestressed load is offset from the load that acts and the amount of deformation of the stringed string material 22 can be made extremely small.

【0017】また、張弦材22が互いに略平行になるよ
うに配置されて広いスペースを覆っていても、各張弦材
22を相互に連結するトラス梁26の両端部に垂下され
た第2の索状体25の下端部を引留部27に固定するよ
うにしているので、広いスペースの両端部のみに第2の
索状体25を垂下させればよく、覆われた室内に第2の
索状体25が垂下されず、室内の有効利用を図ることが
できる。
Further, even when the stringed members 22 are arranged so as to be substantially parallel to each other and cover a wide space, the second cord-shaped members suspended at both ends of the truss beam 26 connecting the stringed members 22 to each other. Since the lower end portion of 25 is fixed to the pulling portion 27, it is sufficient to hang the second cord 25 only at both ends of the wide space, and the second cord 25 can be placed in the covered room. It does not droop, and it is possible to effectively utilize the room.

【0018】次に、図2〜図5に、本発明の他の実施例
の張弦梁構造を示す。本実施例の張弦梁構造は、多雪地
域における多目的ホールの屋根に使用されるものであ
る。
Next, FIGS. 2 to 5 show a stringed beam structure of another embodiment of the present invention. The stringed beam structure of this embodiment is used for the roof of a multipurpose hall in a snowy area.

【0019】この多目的ホールは、側壁を構成する固定
構造体31と、この固定構造体31の両端側に配置され
た高剛性を持つアーチトラス32と、前記固定構造体3
1間に設置された張弦材33と、この張弦材33の中央
部から下方に突出し隣接する張弦材33を連結するセン
タートラス(支持部材とトラス梁との機能を兼用す
る。)34と、各張弦材33の両端部とセンタートラス
34との間に配置された第1の索状体35と、前記セン
タートラス34の両端部から垂下され下端部が前記アー
チトラス32に引き留められる第2の索状体36と、ア
ーチトラス32及び張弦材33の上面を覆って取り付け
られるシート材37とを備える。
The multipurpose hole has a fixed structure 31 forming a side wall, arch trusses 32 having high rigidity arranged on both end sides of the fixed structure 31, and the fixed structure 3.
One of the string chords 33, which is installed between the two, a center truss (which also functions as a support member and a truss beam) 34 that projects downward from the central portion of the string chord 33 and connects the adjacent string chords 33, and each string chord 33. A first cord-like body 35 arranged between both ends and the center truss 34, and a second cord-like body 36 hanging from both ends of the center truss 34 and having a lower end portion retained by the arch truss 32. The arch truss 32 and the sheet member 37 attached to cover the upper surfaces of the stringed members 33.

【0020】本実施例の張弦梁構造によっても前記実施
例と同様に、第2の索状体36の下端部をアーチトラス
32に固定することにより緊張力を付与して、センター
トラス34を介して各張弦材33にプレストレスが付与
されているので、積雪等により荷重が張弦材33に作用
しても作用する荷重から前記プレストレス荷重分が相殺
され、張弦材33の変形量を極めて小さくすることがで
きる。
According to the stringed beam structure of this embodiment, similarly to the above-described embodiment, the lower end portion of the second cord-like body 36 is fixed to the arch truss 32 to give a tension force, and the center truss 34 is used. Since the pre-stress is applied to the stringed member 33, even if a load acts on the stringed member 33 due to snow or the like, the prestressed load is offset from the load that acts and the amount of deformation of the stringed member 33 can be made extremely small.

【0021】また、張弦材33が互いに略平行になるよ
うに配置されて広いスペースを覆っていても、各張弦材
33を相互に連結するセンタートラス34の両端部に垂
下された第2の索状体36の下端部をアーチトラス32
に固定するようにしているので、広いスペースの両端部
のみに第2の索状体36を垂下させればよく、室内の有
効利用を図ることができる。
Further, even if the stringed members 33 are arranged so as to be substantially parallel to each other and cover a wide space, the second cord-like members suspended at both ends of the center truss 34 connecting the stringed members 33 to each other. Arch truss 32 at the lower end of 36
Since the second cords 36 are suspended only at both ends of the wide space, the indoor space can be effectively used.

【0022】[0022]

【発明の効果】以上説明したように、本発明の張弦梁構
造によれば、所定距離に離間して対向配置された一対の
固定構造体間にその中央部を上方へ湾曲させて張弦材が
配設され、該張弦材の中間位置に鉛直下方へ延び出る支
持部材が固定され、前記張弦材の両端部と支持部材との
間に第1の索状体が配置されて構成された複数の張弦梁
が、各張弦材が互いに略平行になるように配置され、さ
らに、各張弦材がこの張弦材と交差する方向に延びるト
ラス梁により連結されるとともに、このトラス梁の両端
部に第2の索状体が垂下され、この第2の索状体の下端
部が下方に位置する引留部に固定され、前記第1及び第
2の索状体に緊張力が付与されているので、張弦梁に重
荷重が負荷された場合に安全面で有害となる張弦梁の変
形を抑えることができ、しかも、張弦梁の下方の空間を
有効利用することができる。
As described above, according to the stringing beam structure of the present invention, the stringing member is arranged by bending the central portion upward between a pair of fixed structures that are opposed to each other with a predetermined distance therebetween. A plurality of tension beams, each of which has a support member extending vertically downward and fixed at an intermediate position of the tension member, and a first cord-like member disposed between both ends of the tension member and the support member. The stringed members are arranged so as to be substantially parallel to each other, and further, each of the stringed members is connected by a truss beam extending in a direction intersecting with the stringed member, and second cords are hung at both ends of the trussed beam. Since the lower end of the second cord is fixed to the towed portion located below and the tension is applied to the first and second cords, when a heavy load is applied to the string beam. It is possible to suppress the deformation of the string beam which is harmful to safety. Can, moreover, it is possible to effectively utilize the space below the Chotsuruhari.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例の張弦梁構造を示す斜視図で
ある。
FIG. 1 is a perspective view showing a tension beam structure of an embodiment of the present invention.

【図2】本発明の他の実施例の張弦梁構造を示す平面図
である。
FIG. 2 is a plan view showing a stringed beam structure of another embodiment of the present invention.

【図3】図2中のイ−イ矢視図である。FIG. 3 is a view on arrow EE in FIG.

【図4】図2中のロ−ロ矢視図である。FIG. 4 is a view on arrow in FIG.

【図5】図2中のハ−ハ矢視図である。FIG. 5 is a view on arrow of FIG.

【図6】従来の張弦梁構造の一例を示す図である。FIG. 6 is a diagram showing an example of a conventional stringed beam structure.

【図7】従来の張弦梁構造の他の例を示す図である。FIG. 7 is a diagram showing another example of a conventional stringed beam structure.

【符号の説明】 21 固定構造物 22 張弦材 23 支持部材 24 第1の索状体 25 第2の索状体 26 トラス梁 27 引留部 32 アーチトラス(引留部) 33 張弦材 34 センタートラス(支持部材及びトラス梁) 35 第1の索状体 36 第2の索状体[Explanation of Codes] 21 Fixed Structure 22 Stranded Chord 23 Support Member 24 First Rope 25 Second Strand 26 Truss Beam 27 Resting Part 32 Arch Truss (Retracting Part) 33 Strut Chord 34 Center Truss (Supporting Member and Truss) Beam) 35 First cord-shaped body 36 Second cord-shaped body

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 所定距離に離間して対向配置された一対
の固定構造体間にその中央部を上方へ湾曲させて張弦材
が配設され、該張弦材の中間位置に鉛直下方へ延び出る
支持部材が固定され、前記張弦材の両端部と支持部材と
の間に第1の索状体が配置されて構成された複数の張弦
梁が、各張弦材が互いに略平行になるように配置され、
さらに、各張弦材がこの張弦材と交差する方向に延びる
トラス梁により連結されるとともに、このトラス梁の両
端部に第2の索状体が垂下され、この第2の索状体の下
端部が下方に位置する引留部に固定され、前記第1及び
第2の索状体に緊張力が付与されていることを特徴とす
る張弦梁構造。
1. A support member in which a stringing member is disposed between a pair of fixed structures which are spaced apart from each other by a predetermined distance and are opposed to each other, with its central portion bent upward, and which extends vertically downward at an intermediate position of the stringing member. Is fixed, and a plurality of tension string beams configured by arranging the first cord-shaped bodies between both ends of the tension string material and the support member are arranged so that the respective string members are substantially parallel to each other,
Furthermore, each of the stringed members is connected by a truss beam extending in a direction intersecting with the stringed member, and a second cord-like member is hung at both end portions of the truss beam, and a lower end portion of the second cord-shaped member is lowered. A stringed beam structure, which is fixed to a towed portion located at a position where tension is applied to the first and second cords.
JP09468693A 1993-04-21 1993-04-21 String beam structure Expired - Fee Related JP3254613B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09468693A JP3254613B2 (en) 1993-04-21 1993-04-21 String beam structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09468693A JP3254613B2 (en) 1993-04-21 1993-04-21 String beam structure

Publications (2)

Publication Number Publication Date
JPH06307008A true JPH06307008A (en) 1994-11-01
JP3254613B2 JP3254613B2 (en) 2002-02-12

Family

ID=14117089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09468693A Expired - Fee Related JP3254613B2 (en) 1993-04-21 1993-04-21 String beam structure

Country Status (1)

Country Link
JP (1) JP3254613B2 (en)

Also Published As

Publication number Publication date
JP3254613B2 (en) 2002-02-12

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