JP2544189B2 - Hybrid truss - Google Patents
Hybrid trussInfo
- Publication number
- JP2544189B2 JP2544189B2 JP63227555A JP22755588A JP2544189B2 JP 2544189 B2 JP2544189 B2 JP 2544189B2 JP 63227555 A JP63227555 A JP 63227555A JP 22755588 A JP22755588 A JP 22755588A JP 2544189 B2 JP2544189 B2 JP 2544189B2
- Authority
- JP
- Japan
- Prior art keywords
- chord member
- diagonal
- truss
- lower chord
- cable
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、梁等の長い荷重支持部材であって、下弦
材にケーブルを用いたハイブリッドトラスに関するもの
である。Description: TECHNICAL FIELD The present invention relates to a hybrid truss that is a long load supporting member such as a beam and uses a cable as a lower chord member.
［従来の技術］ 従来、引張り側に生じる応力を低減させるトランス梁
としては、上弦材および下弦材間をラチスで連結したト
ラス梁の下弦材にPC鋼棒を配設し、こののPC鋼棒にプレ
ストレスを導入したものが知られている（特開昭62−17
8647号公報参照）。[Prior Art] Conventionally, as a transformer beam for reducing the stress generated on the tension side, a PC steel rod is arranged on the lower chord member of a truss beam in which an upper chord member and a lower chord member are connected by a lattice, and this PC steel rod is used. It is known that a prestress is introduced in Japanese Patent Laid-Open No. 62-17.
See 8647).
［発明が解決しようとする課題］ 前記従来のトラス梁に用いられているPC鋼棒は、引張
り側に生じる引張り応力を低減させるためのものであっ
て、トラスに水勾配を与えるものではなく、またPC鋼棒
を用いているので軽量化に対しては十分でなかった。[Problems to be Solved by the Invention] The PC steel rod used in the conventional truss beam is for reducing the tensile stress generated on the tensile side, and does not give a water gradient to the truss, Also, since it uses PC steel rods, it was not sufficient for weight reduction.
この発明は、上弦材や下弦材に機械的曲げ加工を施す
ことなくトラスに水勾配を与えるとともに、トラス梁の
働きを有しながら軽量にすることによって曲げによる応
力を低減したトラスを得ることを課題とするものであ
る。The present invention provides a truss with a water gradient without mechanical bending of the upper and lower chords, and a truss with reduced stress due to bending while having the function of a truss beam and being lightweight. This is an issue.
［課題を解決するための手段］ 前記の課題を解決するため、この発明は、鋼材等から
なる上弦材と中間弦材２とを同一の長さの斜材４で連結
し、中間弦材２と下弦材３のケーブルとの間の斜材４、
５の長さを同一またはこれより長尺とするとともに、中
間弦材２と下弦材３のケーブルの間の斜材５の長さを中
央から両端に向って短くしたハイブリッドトラスの手段
を講じるものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention connects an upper chord member made of steel or the like and an intermediate chord member 2 with a diagonal member 4 having the same length. Cable 4 between the lower chord 3 and the cable,
A means of a hybrid truss in which the lengths of 5 are the same or longer and the length of the diagonal member 5 between the cables of the middle chord member 2 and the lower chord member 3 is shortened from the center toward both ends Is.
［作 用］ この発明の作用について実施例を参照して説明する。[Operation] The operation of the present invention will be described with reference to embodiments.
第１実施例においては、上弦材１と中間弦材２とを斜
材４で連結した部分がトラス梁の働きをしており、この
部分にかかる荷重によって生じる曲げに対しては、下弦
材３のケーブルに導入されたプレストレスによって曲げ
による応力を低減させトラスの剛性を高めるものであ
り、第２実施例においては、上弦材１と中間弦材２とを
斜材４で連結した部分がトラス梁として働き、この部分
にかかる荷重によって生じる曲げに対しては斜材４より
も長い斜材５のを介して下弦材３のケーブルに導入され
たプレストレスによってケーブルにかかる荷重により多
く抵抗させるとともに、下弦材３のケーブルは中央から
両端に向って短くした斜材５で連結されているので、上
弦材１、中間弦材２および斜材４で構成されるトラスを
上方へ向わせ水勾配程度のむくりを生じさせるものであ
る。In the first embodiment, the portion in which the upper chord member 1 and the intermediate chord member 2 are connected by the diagonal member 4 functions as a truss beam, and the lower chord member 3 is bent against bending caused by the load applied to this portion. The stress caused by bending is reduced by the pre-stress introduced into the cable of FIG. 2 and the rigidity of the truss is increased. In the second embodiment, the portion where the upper chord member 1 and the intermediate chord member 2 are connected by the diagonal member 4 is the truss. It acts as a beam, and the bending caused by the load applied to this portion is more resistant to the load applied to the cable by the prestress introduced into the cable of the lower chord member 3 through the diagonal member 5 longer than the diagonal member 4. Since the cable of the lower chord member 3 is connected by the diagonal member 5 shortened from the center toward both ends, the truss composed of the upper chord member 1, the intermediate chord member 2 and the diagonal member 4 is directed upward and the water gradient is increased. It is intended to cause of Mukuri.
［実施例］ この発明の実施例について図面を参照して説明する。Embodiments Embodiments of the present invention will be described with reference to the drawings.
第１図は第１実施例を示すもので、鋼管等の鋼材から
なる上弦材１および中間弦材２との間ならびに中間弦材
２とケーブルからなる下弦材３との間は同一長さの斜材
４で連結されており、この下弦材３のケーブルを左右に
引張してプレストレスを導入することによってハイブリ
ッドトラスが構成されている。FIG. 1 shows a first embodiment in which the upper chord member 1 and the middle chord member 2 made of steel such as a steel pipe and the middle chord member 2 and the lower chord member 3 made of a cable have the same length. They are connected by diagonal members 4, and a hybrid truss is constructed by pulling the cable of the lower chord member 3 left and right to introduce prestress.
第２図は第２実施例を示すもので、鋼管等の鋼材から
なる上弦材１および中間弦材２との間は同一の長さの斜
材４で連結され、中間弦材２とケーブルからなる下弦材
３との間は中央部の斜材５が上弦材１と中間弦材２の間
の斜材４より長く、中央から両端に向って短い長さとし
た斜材５で連結され、下弦材３のケーブルを左右に引張
してプレストレスを導入することによってハイブリッド
トラスが構成されている。FIG. 2 shows a second embodiment, in which an upper chord member 1 and an intermediate chord member 2 made of steel such as a steel pipe are connected by a diagonal member 4 having the same length. The lower chord member 3 is connected to the lower chord member 3 by a diagonal member 5 which is longer than the diagonal member 4 between the upper chord member 1 and the middle chord member 2 and is shorter from the center toward both ends. A hybrid truss is constructed by pulling the cable of the material 3 left and right to introduce prestress.
なお、このトラスは立体トラス版として用いることが
可能である。In addition, this truss can be used as a three-dimensional truss plate.
第３図ないし第６図は、下弦材３と斜材4,5との固定
状態を示すもので、第３図および第４図において、斜材
4,5の下端には下弦材３のケーブルを挟持するための湾
曲凹部６を有する支圧板７の一方を固着した取付け板８
が固着されており、支圧板７の湾曲凹部６を下弦材３の
ケーブルに当接し、その反対側から他方の支圧板7aを当
接して高力ボルト９で締付けることにより下弦材３と支
圧板7,7aが摩擦力で固定される。FIGS. 3 to 6 show a fixed state of the lower chord member 3 and the diagonal members 4 and 5, and in FIGS.
A mounting plate 8 having one end of a pressure bearing plate 7 having a curved recess 6 for holding the cable of the lower chord member 3 fixed to the lower ends of 4,5.
Is fixed to the lower chord member 3 by pressing the curved concave portion 6 of the pressure support plate 7 against the cable of the lower chord member 3, and abutting the other pressure support plate 7a from the opposite side and tightening the high strength bolt 9. 7,7a is fixed by frictional force.
第５図および第６図において、斜材4,5の下端は下弦
材３のケーブルを挿通させる挿通孔10を有し、その左右
端をより大径の拡大孔11とした円筒部材12を固着した取
付け板13が固着され、円筒部材12の挿通孔10に下弦材３
のケーブルを挿通した後、くさび14を拡大孔11に打込む
ことによって下弦材３と円筒部材12とが摩擦により固定
される。In FIGS. 5 and 6, the lower ends of the diagonal members 4 and 5 have insertion holes 10 through which the cables of the lower chord member 3 are inserted, and the left and right ends of the oblique members 4 and 5 are fixed to a cylindrical member 12 having enlarged holes 11 having a larger diameter. The attached mounting plate 13 is fixed, and the lower chord member 3 is inserted into the insertion hole 10 of the cylindrical member 12.
After inserting the cable, the wedge 14 is driven into the enlarged hole 11 so that the lower chord member 3 and the cylindrical member 12 are fixed by friction.
［発明の効果］ この発明は、長期荷重に対してケーブルにプレストレ
スを導入したもので曲げによる応力を低減させることが
できるとともに軽量化を図ることができ、また上弦材ま
たは中間弦材に機械的曲げ加工を施すことなくトラスの
水勾配を確保できる。[Advantages of the Invention] The present invention introduces prestress to the cable against long-term load, can reduce the stress due to bending and can reduce the weight, and can be used for the upper chord member or the middle chord member. The water gradient of the truss can be secured without the need for mechanical bending.
第１図はこの発明の第１実施例を示す正面図、第２図は
第２実施例を示す正面図、第３図は一部の正面図、第４
図はその側面図、第５図は一部の正面図、第６図はその
側面図である。 １……上弦材、２……中間弦材、３……下弦材、４……
斜材、５……斜材。1 is a front view showing a first embodiment of the present invention, FIG. 2 is a front view showing a second embodiment, FIG. 3 is a partial front view, and FIG.
The figure is its side view, FIG. 5 is a partial front view, and FIG. 6 is its side view. 1 ... upper chord, 2 ... middle chord, 3 ... lower chord, 4 ...
Diagonal materials, 5 ... diagonal materials.
Claims (4)
（２）とを斜材（４）で連結するとともに、下弦材
（３）をケーブルとし、中間弦材（２）と下弦材（３）
の間を斜材（４），（５）で連結し、下弦材（３）にプ
レストレスを導入したハイブリッドトラス。1. An upper chord member (1) made of steel or the like and an intermediate chord member (2) are connected by a diagonal member (4), and a lower chord member (3) is used as a cable, and the intermediate chord member (2) and the lower chord member are connected. Material (3)
A hybrid truss in which the spaces are connected by diagonal members (4) and (5) and prestress is introduced into the lower chord member (3).
材（４）の長さと、中間材（２）と下弦材（３）の間の
斜材（４）の長さを同一とした請求項１記載のハイブリ
ッドトラス。2. The length of the diagonal member (4) between the upper chord member (1) and the intermediate chord member (2) and the length of the diagonal member (4) between the intermediate chord member (2) and the lower chord member (3). The hybrid truss according to claim 1, which has the same length.
（５）を少くとも中央部において上弦材（１）と中間弦
材（２）の間の斜材（４）より長尺のものとした請求項
１記載のハイブリッドトラス。3. A diagonal member (5) between the middle chord member (2) and the lower chord member (3) is provided at least in the center portion between the upper chord member (1) and the middle chord member (2). ) The hybrid truss according to claim 1, which has a longer length.
（４）を同一の長さとし、中間弦材（２）と下弦材
（３）の間の斜材（５）の長さを中央から両端に向って
短くした請求項１記載のハイブリッドトラス。4. A diagonal member (4) between the upper chord member (1) and the middle chord member (2) has the same length, and a diagonal member (5) between the middle chord member (2) and the lower chord member (3). 2. The hybrid truss according to claim 1, wherein the length of () is shortened from the center toward both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63227555A JP2544189B2 (en) | 1988-09-13 | 1988-09-13 | Hybrid truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63227555A JP2544189B2 (en) | 1988-09-13 | 1988-09-13 | Hybrid truss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0280743A JPH0280743A (en) | 1990-03-20 |
| JP2544189B2 true JP2544189B2 (en) | 1996-10-16 |
Family
ID=16862739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63227555A Expired - Fee Related JP2544189B2 (en) | 1988-09-13 | 1988-09-13 | Hybrid truss |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544189B2 (en) |
-
1988
- 1988-09-13 JP JP63227555A patent/JP2544189B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0280743A (en) | 1990-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |