JPH0688401A - Steel beam - Google Patents
Steel beamInfo
- Publication number
- JPH0688401A JPH0688401A JP26542992A JP26542992A JPH0688401A JP H0688401 A JPH0688401 A JP H0688401A JP 26542992 A JP26542992 A JP 26542992A JP 26542992 A JP26542992 A JP 26542992A JP H0688401 A JPH0688401 A JP H0688401A
- Authority
- JP
- Japan
- Prior art keywords
- chord member
- cord member
- pipe
- lower chord
- bending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、鉄骨構造の建築物な
どに使用される鉄骨梁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel beam used in a building having a steel structure.
【０００２】[0002]
【従来の技術】従来、鉄骨構造における建築物では、床
小梁や屋根小梁として一般的にＨ形鋼が使用されてい
る。2. Description of the Related Art Conventionally, in a building having a steel frame structure, H-section steel is generally used as a floor beam or a roof beam.
【０００３】[0003]
【発明が解決しようとする課題】Ｈ形鋼を梁材として使
用する場合、積載荷重に対する撓みを充分に小さくして
振動を少なくするためには、梁成つまり梁断面の高さ寸
法の大きいものを使用しなくてはならない。しかし、梁
成を高くすると、それだけ天井ふところが高くなり、建
築物の高さが無駄に高くなる。このため、通常は強度上
で問題のない程度の断面のＨ形鋼が使用されるが、前記
の梁の撓みによる振動が鉄骨構造の大きな欠点となって
いる。また、Ｈ形鋼を床小梁として使用した場合、面外
拘束力が充分に得られず、横つなぎ材の本数を多くする
必要がある。When H-section steel is used as a beam material, in order to sufficiently reduce the flexure against a load and reduce the vibration, the beam formation, that is, the height dimension of the beam cross section is large. Must be used. However, the higher the beam is, the higher the ceiling is, and the height of the building is unnecessarily increased. Therefore, an H-section steel having a cross section that does not cause a problem in strength is usually used, but the vibration due to the bending of the beam is a major drawback of the steel frame structure. Further, when H-section steel is used as a floor beam, out-of-plane restraint force cannot be obtained sufficiently, and it is necessary to increase the number of horizontal tie members.
【０００４】この発明の目的は、梁成を低くして充分な
撓み抑制，振動防止が図れ、かつ面外拘束力も大きく得
られる鉄骨梁を提供することである。An object of the present invention is to provide a steel frame beam which can be made to have a low beam formation to sufficiently suppress bending and prevent vibration and to obtain a large out-of-plane restraining force.
【０００５】[0005]
【課題を解決するための手段】この発明の鉄骨梁は、ウ
ェブ部の上下に、フランジ状の上弦材とパイプ状の下弦
材とを各々設け、前記下弦材内に張力負荷用線材を挿通
して緊張状態で前記下弦材の両端に止付けたものであ
る。上フランジには両側縁に下向きのリップ部を設けて
も良い。According to the steel frame beam of the present invention, a flange-shaped upper chord member and a pipe-shaped lower chord member are provided above and below a web portion, and a tension load wire is inserted into the lower chord member. It is fastened to both ends of the lower chord member in a tense state. The upper flange may be provided with downward lip portions on both side edges.
【０００６】[0006]
【作用】この構成の鉄骨梁によると、パイプ状の下弦材
内に挿通して止付けた張力負荷用線材により、下弦材に
圧縮方向のプレストレスが与えられる。そのため、積載
荷重によって下弦材に作用する引っ張り方向のストレス
に対して、前記プレストレスが相殺方向に作用すること
になり、梁成が低くても、撓みを小さくすることができ
る。また、下弦材がパイプ状であるため、面外拘束抵抗
力が大きく、横補剛が少なくて済む。上弦材にリップを
設けた場合は、リップ部による補強効果のために、より
一層横補剛が少なくて済む。According to the steel beam having this structure, the lower chord member is prestressed in the compression direction by the tension-loading wire rod that is inserted and fixed in the pipe-shaped lower chord member. Therefore, the pre-stress acts in the canceling direction against the stress in the pulling direction that acts on the lower chord member due to the load, and the flexure can be reduced even if the beam formation is low. Further, since the lower chord member is pipe-shaped, the out-of-plane restraining resistance is large, and the lateral stiffening is small. When the upper chord member is provided with a lip, lateral reinforcement can be further reduced due to the reinforcing effect of the lip portion.
【０００７】[0007]
【実施例】この発明の一実施例を図１ないし図３に基づ
いて説明する。この鉄骨梁は、ウェブ部１の上端にフラ
ンジ状の上弦材２を水平に設けると共に、下端にパイプ
状の下弦材３を設け、この下弦材３内に張力負荷用線材
４を挿通して緊張状態で止付けたものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. In this steel frame beam, a flange-shaped upper chord member 2 is horizontally provided at the upper end of the web portion 1, and a pipe-shaped lower chord member 3 is provided at the lower end. It is stopped in the state.
【０００８】上弦材２の両端には下向きに折り曲げたリ
ップ部２ａが形成してある。ウェブ部１から上弦材２に
かけての断面Ｔ字状の部分は、図２のようにウェブ部１
から上弦材２の片辺部にかけて一体に形成した断面逆Ｌ
字状の部材Ａに、上弦材２の残りの片辺部を構成する板
状の部材Ｂを溶接５により接合して形成される。また、
ウェブ部１の下端へのパイプ状下弦材３の接合も、図１
のように溶接６によって行われる。このように複数の部
材を溶接して鉄骨梁が構成されるので、その各部の寸法
を、使用目的に合わせて自由に選択設定できる。Lip portions 2a bent downward are formed at both ends of the upper chord member 2. The portion having a T-shaped cross section from the web portion 1 to the upper chord member 2 has a web portion 1 as shown in FIG.
Cross section reverse L formed integrally from one side of upper chord 2 to
The plate-shaped member B constituting the remaining one side of the upper chord member 2 is joined to the character-shaped member A by welding 5 to be formed. Also,
The joining of the pipe-shaped lower chord member 3 to the lower end of the web portion 1 is also shown in FIG.
Is performed by welding 6 as described above. Since a plurality of members are welded to form a steel beam in this manner, the dimensions of each part can be freely selected and set according to the purpose of use.
【０００９】パイプ状下弦材３内に挿通する張力負荷用
線材４として、ここではＰＣ鋼棒（高張力鋼棒）が使用
される。その張力負荷用線材４の両端は、パイプ状下弦
材３の両端を塞ぐ円板状キャッププレート７の挿通孔７
ａに挿通させ、その両端に形成した雄ねじ部４ａにナッ
ト８を螺合させることでキャッププレート７に緊張状態
に止付けられる。張力負荷用線材４としては、このほか
鉄筋ブレースやＰＣ鋼より線なども使用できる。A PC steel rod (high-tensile steel rod) is used here as the wire 4 for tension loading which is inserted into the pipe-shaped lower chord member 3. Both ends of the tension load wire 4 are inserted through holes 7 of a disc-shaped cap plate 7 that closes both ends of the pipe-shaped lower chord member 3.
The nut 8 is inserted into the cap plate 7a, and the nuts 8 are screwed into the male screw parts 4a formed at both ends thereof, so that the cap plate 7 is fixed in a tensioned state. As the wire rod 4 for tension loading, a reinforcing bar brace or a stranded PC steel wire may be used.
【００１０】この構成によると、鉄骨梁の撓みで下弦材
３に作用する引っ張り応力が、パイプ状下弦材４の両端
間に止付けた張力負荷用線材４によるプレストレスで相
殺される。したがって、ウェブ部１の高さ寸法が低くて
も、充分な撓み抑制が行え、撓みによる振動の発生が防
止できる。また、それだけ梁を軽量のものとできる。According to this structure, the tensile stress acting on the lower chord member 3 due to the bending of the steel beam is offset by the prestress by the tension load wire 4 fixed between both ends of the pipe-shaped lower chord member 4. Therefore, even if the height of the web portion 1 is low, it is possible to sufficiently suppress the bending and prevent the occurrence of vibration due to the bending. Moreover, the beam can be made lighter by that much.
【００１１】また、下弦材３はパイプ状であるため、面
外拘束力が大きく、そのため横補剛が少なくて済む。し
かも、下弦材３がパイプ状であるため、露出状態の天井
梁に使用した場合等に、見栄えが良いという利点があ
る。上弦材２はフランジ状のものとしているため、従来
のＨ形鋼と同様に、デッキプレート、折版などを納りよ
く載架できる。この実施例のように上弦材２にリップ部
２ａを設けた場合は、リップ部２ａによって上弦材２の
補強効果が得られるため、より一層大きな面外拘束力が
得られる。Further, since the lower chord member 3 has a pipe shape, it has a large out-of-plane restraining force, so that lateral stiffening is small. Moreover, since the lower chord member 3 has a pipe shape, it has an advantage that it looks good when used for an exposed ceiling beam. Since the upper chord member 2 has a flange shape, a deck plate, a folding plate, and the like can be mounted and mounted well, like the conventional H-section steel. When the lip portion 2a is provided on the upper chord member 2 as in this embodiment, the lip portion 2a can reinforce the upper chord member 2, and thus a larger out-of-plane restraining force can be obtained.
【００１２】[0012]
【発明の効果】この発明の鉄骨梁は、ウェブ部の上下
に、フランジ状の上弦材とパイプ状の下弦材とを各々設
け、下弦材内に張力負荷用線材を挿通して緊張状態で下
弦材の両端に止付けたため、プレストレスによって撓み
防止効果が得られ、撓みが小さくて振動の少ない梁とで
きる。しかも、パイプ状の下弦材によって大きな面外拘
束力が得られ、横補剛が少なくて済む。上弦材にリップ
部を設けた場合は、より一層大きな面外拘束力が得られ
る。According to the steel beam of the present invention, a flange-shaped upper chord member and a pipe-shaped lower chord member are provided above and below the web portion, respectively, and a tension load wire is inserted into the lower chord member so that the lower chord member is tensioned. Since it is fastened to both ends of the material, it is possible to obtain an effect of preventing bending by prestressing, and it is possible to obtain a beam with small bending and less vibration. Moreover, a large out-of-plane restraining force can be obtained by the pipe-shaped lower chord member, and lateral stiffening can be reduced. When the upper chord member is provided with the lip portion, a larger out-of-plane restraining force can be obtained.
【図１】この発明の一実施例である鉄骨梁の一部破断斜
視図である。FIG. 1 is a partially cutaway perspective view of a steel frame beam according to an embodiment of the present invention.
【図２】その側面図である。FIG. 2 is a side view thereof.
【図３】その一部破断正面図である。FIG. 3 is a partially cutaway front view thereof.
【符号の説明】 １…ウェブ部、２…上弦材、３…下弦材、４…張力負荷
用線材、４ａ…雄ねじ部、７…キャッププレート、８…
ナット[Explanation of Codes] 1 ... Web portion, 2 ... Upper chord member, 3 ... Lower chord member, 4 ... Tension load wire rod, 4a ... Male screw portion, 7 ... Cap plate, 8 ...
nut
Claims (2)
とパイプ状の下弦材とを各々設け、前記下弦材内に張力
負荷用線材を挿通して緊張状態で前記下弦材の両端に止
付けた鉄骨梁。1. A flange-shaped upper chord member and a pipe-shaped lower chord member are respectively provided above and below the web portion, and a tension load wire rod is inserted into the lower chord member to stop at both ends of the lower chord member in a tensioned state. Attached steel beam.
けた請求項１記載の鉄骨梁。2. The steel frame beam according to claim 1, wherein downward lip portions are provided on both side edges of the upper chord member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26542992A JPH0688401A (en) | 1992-09-07 | 1992-09-07 | Steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26542992A JPH0688401A (en) | 1992-09-07 | 1992-09-07 | Steel beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0688401A true JPH0688401A (en) | 1994-03-29 |
Family
ID=17417039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26542992A Pending JPH0688401A (en) | 1992-09-07 | 1992-09-07 | Steel beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0688401A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020096596A (en) * | 2001-06-21 | 2002-12-31 | 황문삼 | construction method for defending earth using prestressed wale used therefor |
| JP2008019588A (en) * | 2006-07-12 | 2008-01-31 | Sus Corp | Deflection preventive device of frame material |
| KR100983085B1 (en) * | 2010-01-13 | 2010-09-20 | 안창일 | Composite member with tensile flange of closed and prestressed pipe type and the structure construction method |
| WO2012019275A1 (en) * | 2010-08-13 | 2012-02-16 | Sea Ng Corporation | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
| KR101534269B1 (en) * | 2014-07-18 | 2015-07-06 | (주)센벡스 | Wire tension structure using the friction joined fixing block |
| KR20150075433A (en) * | 2013-12-25 | 2015-07-06 | 주식회사 포스코 | Steel tube combination type wider width wale |
| US9625067B2 (en) | 2009-09-01 | 2017-04-18 | Sea Ng Corporation | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
-
1992
- 1992-09-07 JP JP26542992A patent/JPH0688401A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020096596A (en) * | 2001-06-21 | 2002-12-31 | 황문삼 | construction method for defending earth using prestressed wale used therefor |
| JP2008019588A (en) * | 2006-07-12 | 2008-01-31 | Sus Corp | Deflection preventive device of frame material |
| US9625067B2 (en) | 2009-09-01 | 2017-04-18 | Sea Ng Corporation | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
| KR100983085B1 (en) * | 2010-01-13 | 2010-09-20 | 안창일 | Composite member with tensile flange of closed and prestressed pipe type and the structure construction method |
| WO2012019275A1 (en) * | 2010-08-13 | 2012-02-16 | Sea Ng Corporation | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
| CN103249983A (en) * | 2010-08-13 | 2013-08-14 | 西伍公司 | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
| JP2013536381A (en) * | 2010-08-13 | 2013-09-19 | シー・エヌジー・コーポレーション | Appropriate clamp to increase fatigue life of butt welds of pipes that are bent later |
| JP2015121327A (en) * | 2010-08-13 | 2015-07-02 | シー・エヌジー・コーポレーション | Clamp suitable for increasing fatigue life of butt welds of pipe pressure vessel which is subsequently bent |
| CN103249983B (en) * | 2010-08-13 | 2015-11-25 | 西伍公司 | Increase the fixture of butt weld fatigue life of pipe pressure container bending subsequently |
| KR20150075433A (en) * | 2013-12-25 | 2015-07-06 | 주식회사 포스코 | Steel tube combination type wider width wale |
| KR101534269B1 (en) * | 2014-07-18 | 2015-07-06 | (주)센벡스 | Wire tension structure using the friction joined fixing block |
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