JPS62182345A - Truss girder - Google Patents
Truss girderInfo
- Publication number
- JPS62182345A JPS62182345A JP2150986A JP2150986A JPS62182345A JP S62182345 A JPS62182345 A JP S62182345A JP 2150986 A JP2150986 A JP 2150986A JP 2150986 A JP2150986 A JP 2150986A JP S62182345 A JPS62182345 A JP S62182345A
- Authority
- JP
- Japan
- Prior art keywords
- truss beam
- steel
- span
- steel material
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 63
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 235000011293 Brassica napus Nutrition 0.000 description 1
- 240000008100 Brassica rapa Species 0.000 description 1
- 235000000540 Brassica rapa subsp rapa Nutrition 0.000 description 1
- 241000251730 Chondrichthyes Species 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、特に長大スパンの構造物において用いて有効
なトラス梁に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a truss beam that is particularly useful in long span structures.
「従来の技術」
長大スパン構造物で平行値トラスをもつ架構形式として
は、トラス構造、シェル構造等、種々のものが用いられ
ている。``Prior Art'' Various types of frames with parallel value trusses are used in long-span structures, such as truss structures and shell structures.
ところで、従来一般に用いられている平行値トラスでは
、そのスパン長が著しく大きくなった場合には撓みが大
きくなるばかりでなく、構造物の全体重１に対してトラ
ス自重の割合が大きくなって不経済になってしまうとい
う問題点があった。By the way, in the parallel value truss commonly used in the past, when the span length becomes significantly large, not only does the deflection increase, but the ratio of the truss's own weight to the total weight of the structure increases, causing problems. The problem was that it became an economic issue.
そこで、本出願人等は、このような問題点を解決するた
めに、上弦材、下弦材、ラチス（才で組まれたトラス材
で、前記部材（上弦材、下弦（オおよびラチス材）の少
なくとも一本以上の部ＨにＰＣ鋼材を一体に取り付け、
梁の両端でＰＣＸＩＪ財を緊張し定着することによって
プレストレスを導入するトラス梁を提案した。Therefore, in order to solve such problems, the present applicant et al. have developed a truss material assembled with the upper chord material, lower chord material, and lattice material, and Attach a PC steel material integrally to at least one part H,
We proposed a truss beam that introduces prestressing by tensioning and anchoring PCXIJ goods at both ends of the beam.
「発明が解決しようとする問題点」
ところが、前記のようなトラス梁に対してプレストレス
を導入した場合には、その梁が両端支持になっているこ
とから、次ぎのような問題点が生じる。"Problems to be Solved by the Invention" However, when prestressing is introduced into a truss beam as described above, the following problems arise because the beam is supported at both ends. .
すなわち、両端を支持したトラス梁は、例えば等分布荷
重（自重および積載荷重を合計した長期荷重）ｐが加え
られた場合、第９図などに示すように、下弦材１での曲
げモーメントがスパン中央で大きく端で小さいので、そ
の引張力が、節点（格点）間のスパン中央で大きく、両
端ではスパン中央よりら小さいものとなる。このため、
トラス梁Ａの両端でＰＣ鋼材を緊張し、一定のプレスト
レスを導入すると、応力状態がスパン方向で違うことを
起因にして、トラス材の一定の部材に余剰なプレストレ
スが導入されることがあり、この余剰のプレストレスを
導入するので、トラス材やｐｃａ材に対する特別な配慮
を必要とし、不経済になってしまう等の問題点を生じる
。In other words, when a truss beam supported at both ends is subjected to, for example, a uniformly distributed load (a long-term load that is the sum of its own weight and live load) p, the bending moment at the lower chord 1 will be equal to the span as shown in Figure 9. Since it is large at the center and small at the ends, the tensile force is large at the center of the span between nodes (case points), and smaller at both ends than at the center of the span. For this reason,
When the PC steel members are tensed at both ends of the truss beam A and a certain prestress is introduced, excessive prestress may be introduced to certain members of the truss member due to the stress state being different in the span direction. However, since this surplus prestress is introduced, special consideration is required for the truss material and the PCA material, resulting in problems such as being uneconomical.
本発明は前記の事情に鑑みてなされたもので、トラス材
に導入されるプレストレスを応力状態に応じて変化させ
ろことができ、また、経済的な架構か可能となるトラス
梁を提供することを目的としている。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a truss beam that can change the prestress introduced into the truss material depending on the stress state and also allows for an economical frame construction. It is an object.
「問題点を解決するための手段」
本発明は、上弦材、下弦材、ラチス材で組まれたトラス
材で、スパン方向に延びる少なくと６１本以上の部材に
ＰＣ９Ｊ材が一体に取り付けられ、このＰＣ鋼材の緊張
によりプレストレスが導入されたトラス梁であって、前
記ＰＣＲ材の途中に、このＰＣ鋼材を貫通した状態でか
つスパン中央の両側に位置して少なくとも２枚の支圧板
を設け、これら支圧板間のＰＣ鋼材を、スパン中央に導
入すべきプレストレスを与えるための引張力を加えた状
態で、前記支圧板に定着し、しかも、前記トラス梁の端
部と支圧板との間のＰＣ鋼材を、前記支圧板間のＰＣ鋼
材に与えている引張力よりも小さい引張力を加えた状態
で定着することを特徴としている。"Means for Solving the Problems" The present invention is a truss material assembled with an upper chord material, a lower chord material, and a lattice material, in which PC9J material is integrally attached to at least 61 or more members extending in the span direction, A truss beam in which prestress is introduced by tensioning the PC steel material, and at least two bearing plates are provided in the middle of the PCR material, penetrating the PC steel material and located on both sides of the center of the span. , the PC steel material between these bearing plates is fixed to the bearing plates with a tensile force applied to give a prestress to be introduced into the center of the span, and the connection between the end of the truss beam and the bearing plates is fixed. It is characterized in that the PC steel material between the bearing plates is fixed with a tensile force smaller than the tensile force applied to the PC steel material between the bearing pressure plates.
「作用」
前記構成のトラス梁においては、支圧板間でＰＣ鋼材の
引張力を変えてプレストレスを調整することによって、
応力状態に応じてプレストレスを効率良く導入すること
ができ、このトラス梁の撓みを低減することができる。"Operation" In the truss beam with the above configuration, by adjusting the prestress by changing the tensile force of the prestressing steel material between the bearing plates,
Prestress can be efficiently introduced depending on the stress state, and the deflection of this truss beam can be reduced.
また、本発明ではＰＣ鋼材の途中を支圧板毎に定着した
から、これらの内の何れかが万一切断したとしても、部
分的な対応ですむので、トラス梁全体に影響を及ぼすこ
とがなく、プレストレスの１０失を最小限に抑えること
ができる。Furthermore, in the present invention, the middle of the prestressing steel is fixed to each bearing plate, so even if any of these plates were to break, it would only have to be dealt with partially, and the entire truss beam would not be affected. , the prestress loss can be minimized.
「実施例」
以下、本発明の一実施例について第１図ないし第５図を
参照して説明する。"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
このトラス梁ｌＯは、鋼管からなる上弦材１１と、Ｉ（
型鋼からなる下弦１１２と、それらを連結する、鋼管か
らなるラチス材１３および左右の腹材１４によって組み
立てられたトラス材を主体として構成されている。そし
て、前記下弦材１２には、そのウェッブの両側に所定間
隔て支圧板１５とリブ１６とが交互に取り付けられてお
り、これら支圧板１５およびリブ１６を貫通してカブラ
１７により連結された３本のｐｃａ材１８．１９．２０
が下弦材■２の全長にわたって取り付けられている。す
なわち、前記下弦材１２の両端およびスパン中央の両側
の節点の位置（ラチス材１３が連結された位置）には、
それぞれＰＣｊ１鋼材１８．１９．２０を貫通した状態
で支圧板１５．・・・・・・が一体に取り付けられると
ともにこれら支圧板１５の間にリブ１６が設けられ、さ
らに前記支圧板１５に各ＰＣ鋼材１８．１９．２０の端
部がナツト２１を介して定着されている。This truss beam lO is made up of an upper chord member 11 made of a steel pipe and an I(
It is mainly composed of a truss member assembled from a lower chord 112 made of shaped steel, a lattice member 13 made of steel pipes, and left and right flank members 14 that connect them. Bearing plates 15 and ribs 16 are alternately attached to both sides of the web at predetermined intervals on the lower chord member 12, and three bearing plates 15 and ribs 16 are connected to each other by a turntable 17 passing through these bearing plates 15 and ribs 16. book pca material 18.19.20
is attached to the entire length of the lower chord ■2. That is, at the positions of the nodes on both ends of the lower chord member 12 and on both sides of the center of the span (positions where the lattice members 13 are connected),
Bearing plate 15. . . . are integrally attached, and a rib 16 is provided between these pressure plates 15, and furthermore, the ends of each PC steel material 18, 19, 20 are fixed to the pressure plate 15 via nuts 21. ing.
前記２０ｗ４材１ｇ、 １９．２０ハ、例えばｐｃ鋼、
Ｊｌ、す線等の両端に圧着グリップ（マンションと呼ぶ
）２２を冷間押出しによって圧着させ、この圧着グリッ
プ２２の外周におねじ２３を形成してなり、それぞれ上
弦材１１．下弦材１２、ラチス材［３が互いに連結され
て組み立てが終了し、さらにこのトラス梁１０上に機能
上必要な仕上材やその他の設備機器類が設置された後に
緊張されて支圧板１５に固定されるものである。1 g of the 20W4 material, 19.20H, for example PC steel,
Crimp grips (referred to as condominiums) 22 are crimped on both ends of the Jl, bass wire, etc. by cold extrusion, and a screw 23 is formed on the outer periphery of the crimping grip 22. The lower chord member 12 and the lattice member [3 are connected to each other to complete the assembly, and after finishing materials and other equipment required for functionality are installed on the truss beam 10, they are tightened and fixed to the bearing plate 15. It is something that will be done.
さらに、これらについて詳細に説明すれば、スパン中央
に配設されたＰＣ鋼材Ｉ９は、第４図などに示すように
、池のｐ ｃａｔ４１８．２０などが配設される萌に、
スパン中央の引張応力を打ち消すように設定されたプレ
ストレスを導入するための引張力が加えられた状態で支
圧板１５にナツト２１を介して定着されるらのである。Furthermore, to explain these in detail, the PC steel material I9 placed at the center of the span is placed at the bottom where the pond p cat 418.20 etc. are placed, as shown in Fig. 4.
It is fixed to the bearing pressure plate 15 via the nut 21 while a tensile force is applied to introduce a prestress set to cancel the tensile stress at the center of the span.
また、このＰＣｙＡ材１９の両側（すなわち下弦＋７！
′１２の端部と中央の支圧板１５との間）のＰＣｗ４材
１ｇ、 ２０ハ、第５図ニ示スヨうに、カプラ（接合器
具）１７によって前記ＰＣｗ４＋４１９に連結された後
、この部分のトラス梁１０の応力状態に対抗してｎｑ記
ＰＣ鋼材１８に与えられた引張力よりら小さい引張力が
加えられた状態で両端の支圧板１５に定着される。そし
て、これにより、このトラス梁１０はＰＣ鋼材１ｇ、
１９．２０により予め圧縮力が加えられ、プレストレス
が導入されることになる。Also, both sides of this PCyA material 19 (i.e. lower chord +7!
The PCw4 material 1g, 20c (between the end of 12 and the center bearing plate 15) is connected to the PCw4+419 by a coupler (joining device) 17, as shown in FIG. It is fixed to the bearing pressure plates 15 at both ends in a state where a tensile force smaller than the tensile force given to the PC steel material 18 is applied in opposition to the stress state of the beam 10. As a result, this truss beam 10 has 1 g of PC steel material,
19.20, a compressive force is applied in advance and a prestress is introduced.
以上のように構成されたこのトラス梁１０は、３本のＰ
Ｃｆｌｌ材１ｇ、 １９．２０によるプレストレスを各
支圧板１５の間で調整することにより、このトラス梁Ｉ
Ｏの撓みを低減することができるばかりでなく、ＰＣｗ
４材１８．１９．２０＋：下弦材１２ニ加ワル引Ｊ荷１
の一部を負担させることができ、その分下弦材１２の強
度を低減さＵ・ることかできる。This truss beam 10 configured as described above has three P
By adjusting the prestress due to Cflll material 1g and 19.20 between each bearing plate 15, this truss beam I
Not only can the deflection of O be reduced, but also the PCw
4 material 18.19.20+: Lower chord material 12, warp pull J load 1
This can reduce the strength of the lower chord member 12 by that much.
また、このトラス梁１（ｌでは、支圧板１５への定庁を
圧着グリップ２２とナツト２１との螺合により行ってい
るので、緊張定着時のセットロスがなく、定着後のスリ
ップ等がないため、確実にプレストレスを導入すること
できる。しかも、前記ｐ ｃｊｆｆｔｔ＋８．１９．２
０の定着はすべてねじにより行っているので、カップリ
ングが容易、確実、安全に施工でき、繰り返し荷重に対
して疲労の影響が極めて少ないといった利点らある。In addition, in this truss beam 1 (l), since the fixed position to the bearing pressure plate 15 is performed by screwing the crimp grip 22 and the nut 21, there is no set loss during tension fixing, and there is no slipping after fixing. Therefore, prestress can be reliably introduced.Moreover, the above p cjfftt+8.19.2
Since all of the fixing of 0 is done by screws, the coupling can be easily, reliably and safely constructed, and has the advantage that the influence of fatigue against repeated loads is extremely small.
また、このトラス梁１０は、下弦材１２にＰＣ鋼材１８
、１９．２０が一体に取り付けられていることを除いて
は従来のトラス梁と同様であり、それ自体で十分な剛性
を有しているので、万−ＰＣ鋼材１８゜１９、２０が切
断してもトラス梁１０が落下するおそれは無い。しかも
、本発明では各ｐｃａ材１８．１９．２０を支圧板１５
毎に定着したから、これらの内の何れかが万一切断した
としてら、トラス梁ＩＯ全体に影響を及ぼすことがなく
、プレストレスの損失を最小限に抑えることができる。In addition, this truss beam 10 has a PC steel material 18 on the lower chord member 12.
It is similar to a conventional truss beam except that the truss beams 19 and 20 are integrally attached, and it has sufficient rigidity by itself, so the 18°, 19 and 20 However, there is no risk that the truss beam 10 will fall. Moreover, in the present invention, each PCA material 18, 19, 20 is
If any of them were to break, it would not affect the entire truss beam IO, and the loss of prestress can be minimized.
さらに、このトラス梁ｌＯは、その組み立てもＰＣｊＩ
ｉ材１８．１９．２０を取り付けて緊張することを除け
ば従来と変わるところはなく、従来の手法をそのまま用
いることができる。Furthermore, the assembly of this truss beam lO is also PCjI
There is no difference from the conventional method except that the i-materials 18, 19, and 20 are attached and put under tension, and the conventional method can be used as is.
そして、前記のトラス梁１０を用いていることにより、
長大スパン構造物等においては、トラス梁１０に大きな
撓みが生じることはなく、例えば１００ｍにも及ぶ長大
なスパンが必要最小限の高さで確保され、したがって内
部に無駄な空間が生じることなく、経済的な架構が実現
される。また、この構造物は、既設部分に何等の影響を
及ぼずことなく桁行方向に自由に増築することが可能で
ある。And, by using the truss beam 10 described above,
In long-span structures, etc., the truss beam 10 does not undergo large deflection, and a long span of, for example, 100 m can be secured with the minimum necessary height, so there is no wasted space inside. An economical structure is realized. Furthermore, this structure can be freely expanded in the direction of the columns without affecting the existing parts in any way.
第６図および第７図は本発明の他の実施例を示すしので
、第１図などに示したカプラ１７を介して連結した３本
のＰＣＩ材１ｇ、 １９．２０に代えて、下弦（オ１２
の全長にわたる長さのＰＣｗ４材２５を、下弦１１２の
支圧ＩＭＩ５およびリブ１６等を貫通して取り付けたも
のである。そして、このＰＣ鋼材２５の支圧板１５に貫
通する部分の外周には、おねじ２３付きの圧着グリップ
２２が一体に取り付けられ、このおねじ２３に定着用の
ナツト２１が螺合されるようになっている。なお、この
ＰＣｊ！Ｑ材２５は材上５材１１、下弦材１２、ラヂス
材１３および左右の腹材１４等が互いに連結されて組み
立てが終了し、さらに機能上必要な仕上材やその他の設
備機器類が設置された後に、まず、第６図に示すように
、スパン中央に導入すべきプレストレスを与えるための
引張力が加えられて、前記圧着グリップ２２を介して支
圧板１５に一度定着され、次いで、この引張力よりら小
さい引張力が加えられて、下弦材１２の両端の支圧板１
５に定着される。これにより、このトラス梁にも、前記
した実施例と同様に大きさの違うプレストレスが導入さ
れることになる。6 and 7 show other embodiments of the present invention, so instead of the three PCI materials 1g and 19.20 connected via the coupler 17 shown in FIG. O12
A PCw4 material 25 having a length spanning the entire length of is attached by penetrating the supporting pressure IMI5 of the lower chord 112, the rib 16, etc. A crimp grip 22 with a male thread 23 is integrally attached to the outer periphery of the portion of the PC steel material 25 that penetrates the bearing pressure plate 15, and a fixing nut 21 is screwed onto the male thread 23. It has become. Furthermore, this PCj! The Q material 25 is assembled by connecting the upper 5 materials 11, the lower chord materials 12, the radius materials 13, the left and right side materials 14, etc. to each other, and then the finishing materials and other equipment required for functionality are installed. After that, as shown in FIG. 6, a tensile force is applied to give a prestress to be introduced at the center of the span, and the pressure plate 15 is fixed once through the crimp grip 22, and then this A tensile force smaller than the tensile force is applied to the bearing plates 1 at both ends of the lower chord member 12.
It is fixed at 5. As a result, prestresses of different magnitudes are introduced into this truss beam as well, similar to the embodiment described above.
以上、本発明の実施例のトラス梁ｌＯについて説明した
が、本発明は前記に限定されるしのではない。例えば、
前記実施例はトラス梁１０は、下弦材１２にのみＰＣ鋼
材１８．１９．２０を取り付けたが、これは上弦材１１
に対して取り付けても、あるいはそれらの両方に取り付
けるようにしても良い。また、前記ＰＣ鋼材１ｆｔ、
１９．２０としては、ＰＣ鋼より線に代えてｐｃｉ線等
のものを用いてら良い。さらに、トラスの形状、組み方
は適宜で良いし、上弦材１１、下弦（第１２、ラチス（
オＩ３、腹ｔ第１４の材料は鋼管や■４型鋼に限らず、
Ｔ型鋼やＴ型鋼等の適宜の鋼材であっても勿論良いし、
さらには木材等を用いることでも良い。なお、前記実施
例では、支圧板１５は、下弦材１２のスパン中央の両側
に２枚設けたが、この数は実施例のらのに限定されるも
のではなく、さらに数を増やして、数段階に別けてプレ
ストレスを導入する構成としても良い。Although the truss beam lO of the embodiment of the present invention has been described above, the present invention is not limited to the above. for example,
In the above embodiment, the truss beam 10 has the PC steel members 18, 19, and 20 attached only to the lower chord member 12, but this
It may be attached to either or both. In addition, 1 ft of the PC steel material,
19.20, it is better to use a PCI wire instead of a PC steel wire. Furthermore, the shape and assembly method of the truss may be suitably selected;
Materials for OI3 and T14 are not limited to steel pipes and ■Type 4 steel.
Of course, it is also possible to use an appropriate steel material such as T-type steel or T-type steel.
Furthermore, wood or the like may be used. In the embodiment described above, two bearing pressure plates 15 were provided on both sides of the span center of the lower chord member 12, but this number is not limited to the angle of the embodiment. It is also possible to adopt a configuration in which prestress is introduced in stages.
また、前記各実施例の図面では、ｐｃｌ材１８゜１９、
２０．２５はシース管が省略されているが、各ＰＣ鋼材
１８．１９．２０．２５は、シース管を、ｐｃ鋼材１８
、１９．２０．２５を組み付ける時などにおいて、−緒
にｐｃａ材１ｇ、 １９．２０の外周に被せ、緊張後シ
ース管の中にグリースあるいはモルタル等を充填するア
ンボンド工法、あるいは、第８図などに示すように、下
弦材１２のウェッブにシャーコツター３０とシース管３
１とを先付けし、コンクリート３２でこれらを一体にし
ておき、緊張後、ノース管３１にモルタルをグラウトす
るポンドエ、去等を用いることによって、防錆処理が行
なわれる。In addition, in the drawings of each of the above embodiments, PCL material 18°19,
20.25 has a sheathed pipe omitted, but each PC steel material 18.19.20.25 has a sheathed pipe and a PC steel material 18.
When assembling 19.20.25, etc., use the unbonding method, in which 1 g of PCA material is placed over the outer circumference of 19.20, and after tensioning, the sheath tube is filled with grease or mortar, or as shown in Figure 8. As shown in FIG.
1 and 2 are attached in advance, they are united with concrete 32, and after tensioning, rust prevention treatment is performed by grouting mortar onto the north pipe 31 using a grouting method.
「発明の効果Ｊ
以上説明したように本発明によれば、上弦材と下弦（オ
の少なくとも一方にＰＣ鋼材を一体に取り付け、このＰ
ＣｊｌＪ材の途中にＰＣ鋼（オを貫通する支圧板を、ス
パン中央の両側に位置させて配置し、この支圧仮にスパ
ン中央に位置するＰＣｊｌｌｌｌ材を緊張させた状態で
定着したので、支圧板の両側に配置されたＰＣ鋼材を、
スパン中央に位置するＰＣ鋼材とは引張力を変えた状態
で定着し得て、プレストレスをトラス梁の応力状態に応
じて変化させることができ、余剰なブレストレスガ導入
されることが全くなく、経済的な架構を得ることができ
る。"Effect of the Invention J As explained above, according to the present invention, a PC steel material is integrally attached to at least one of the upper chord member and the lower chord member (O), and this P
Bearing plates that pass through the PC steel (O) are placed in the middle of the CjlJ material, and placed on both sides of the center of the span. PC steel materials placed on both sides of
The prestress located at the center of the span can be fixed with varying tensile force, and the prestress can be varied according to the stress state of the truss beam, eliminating the introduction of excess bracing stress. , an economical frame can be obtained.
第１図ないし第５図は本発明の一実施例を示すもので、
第１図はトラス梁の側面図、第２図はトラス梁の中央部
分の構成を示す側面図、第３図は第２図■−■線に沿う
矢視断面図、第４図および第５図は作用を説明するため
に示したもので、それぞれ支圧板部分の側面図、第６図
および第７図は本発明の他の実施例を示す第４図および
第５図と同様の側面図、第８図は下弦材にシャーコツタ
ーとシース管を先付けしコンクリートで一体化した状態
を示す断面図、第９図は曲げモーメントおよび引張力を
示す図である。
ＩＯ・・・・・・トラス梁、Ｕ・・・・・・上弦材、１
２・・・・・・下弦材、１３・・・・ラチス材、１４・
・・・・腹材、１５・・・・・・支圧板、１６・・・・
・・リブ、１７・・・・・・カブラ、１ｇ、 １９．２
０．２５・・・・・・ＰＣ鋼材、２１・・・・・ナツト
、２２・・・・・・圧着グリップ、２３・・・おねじ。1 to 5 show an embodiment of the present invention,
Figure 1 is a side view of the truss beam, Figure 2 is a side view showing the configuration of the central part of the truss beam, Figure 3 is a sectional view taken along the line ■-■ in Figure 2, Figures 4 and 5. The figures are shown to explain the operation, and FIGS. 6 and 7 are side views of the bearing plate portion, respectively, and FIGS. 6 and 7 are side views similar to FIGS. 4 and 5 showing other embodiments of the present invention. , FIG. 8 is a cross-sectional view showing a state in which a shark stopper and a sheath pipe are pre-attached to the lower chord member and integrated with concrete, and FIG. 9 is a diagram showing the bending moment and tensile force. IO...Truss beam, U...Top chord, 1
2... lower chord material, 13... lattice material, 14...
...Body material, 15...Bearing plate, 16...
...Rib, 17...Turnip, 1g, 19.2
0.25...PC steel material, 21...Nut, 22...Crimp grip, 23...Male thread.
Claims (1)
方向に延びる少なくとも１本以上の部材にＰＣ鋼材が一
体に取り付けられ、このＰＣ鋼材の緊張によりプレスト
レスが導入されたトラス梁であって、前記ＰＣ鋼材の途
中には、このＰＣ鋼材を貫通した状態でかつスパン中央
の両側に位置して少なくとも２枚の支圧板が設けられて
おり、これら支圧板間のＰＣ鋼材は、スパン中央に導入
すべきプレストレスを与えるための引張力が加えられた
状態で、前記支圧板に定着され、しかも、前記トラス梁
の端部と支圧板との間のＰＣ鋼材は、前記支圧板間のＰ
Ｃ鋼材に与えられた引張力よりも小さい引張力が加えら
れた状態で定着されていることを特徴とするトラス梁。A truss beam made of upper chord members, lower chord members, and lattice members, in which prestress is introduced by the tension of the prestressed steel members, with prestressed steel members integrally attached to at least one or more members extending in the span direction. At least two bearing pressure plates are provided in the middle of the PC steel material, penetrating the PC steel material and located on both sides of the center of the span, and the PC steel material between these pressure plates is located at the center of the span. The PC steel material between the end of the truss beam and the bearing plate is fixed to the bearing plate while a tensile force is applied to give a prestress to be introduced into the bearing plate. P
A truss beam characterized in that it is fixed with a tensile force smaller than the tensile force applied to the C steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61021509A JPH0747867B2 (en) | 1986-02-03 | 1986-02-03 | Truss beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61021509A JPH0747867B2 (en) | 1986-02-03 | 1986-02-03 | Truss beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62182345A true JPS62182345A (en) | 1987-08-10 |
| JPH0747867B2 JPH0747867B2 (en) | 1995-05-24 |
Family
ID=12056938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61021509A Expired - Lifetime JPH0747867B2 (en) | 1986-02-03 | 1986-02-03 | Truss beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747867B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04128460A (en) * | 1990-09-19 | 1992-04-28 | Toshiro Suzuki | Reinforcing structural member |
| JP2008255741A (en) * | 2007-04-09 | 2008-10-23 | Kajima Corp | Compound girder frame |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5995824B2 (en) * | 2013-12-02 | 2016-09-21 | 三菱電機株式会社 | Passenger conveyor housing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0621491A (en) * | 1992-06-30 | 1994-01-28 | Canon Inc | Photovoltaic element, manufacture thereof and power generator system using the same |
-
1986
- 1986-02-03 JP JP61021509A patent/JPH0747867B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0621491A (en) * | 1992-06-30 | 1994-01-28 | Canon Inc | Photovoltaic element, manufacture thereof and power generator system using the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04128460A (en) * | 1990-09-19 | 1992-04-28 | Toshiro Suzuki | Reinforcing structural member |
| JP2008255741A (en) * | 2007-04-09 | 2008-10-23 | Kajima Corp | Compound girder frame |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0747867B2 (en) | 1995-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6941718B1 (en) | Wall structure | |
| US5561956A (en) | Concrete elements and connectors therefor | |
| US4047341A (en) | Frame structure | |
| US4211044A (en) | Tube space frame system | |
| JPH03501399A (en) | Prestress cable for cable-stayed bridges | |
| JPS62182345A (en) | Truss girder | |
| JPH01299943A (en) | Truss structure | |
| US4145854A (en) | Load-carrying building structure particularly ceilings, floor and the like | |
| JPS62182346A (en) | Truss girder | |
| GB2148100A (en) | Stayed framework arrangement, for example for a shelf system | |
| CA1097877A (en) | Pretensioning diagonals in lattice beam-columns | |
| JP2688631B2 (en) | Strut beam structure and prestressing method for strut beam structure | |
| JPS6351540A (en) | Truss structure | |
| KR20120127200A (en) | three-dimensional structure under tension system | |
| JPH0621491B2 (en) | Prestressed truss beams | |
| JPH01158134A (en) | Truss frame and constructing method thereof | |
| JPS62182352A (en) | Structure of end part fixing part of pc steel material | |
| JPH0749693B2 (en) | Prefabricated composite girder and composite girder support structure | |
| JPH0468141A (en) | Anchoring structure of steel framed reinforced concrete column and main reinforcing bar in joint of beam | |
| JPS63125758A (en) | Truss structure | |
| JPH059364Y2 (en) | ||
| JPH01290856A (en) | Steel pipe concrete | |
| JPH0237486B2 (en) | KANJOBUZAINOTSUGITEKOHO | |
| SU1767136A1 (en) | Framework of building | |
| KR20140088472A (en) | Thermal prestressed girder of temporary structures controlled by adjust tendon and manufacturing method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |