JP2802352B2 - building - Google Patents
buildingInfo
- Publication number
- JP2802352B2 JP2802352B2 JP2253144A JP25314490A JP2802352B2 JP 2802352 B2 JP2802352 B2 JP 2802352B2 JP 2253144 A JP2253144 A JP 2253144A JP 25314490 A JP25314490 A JP 25314490A JP 2802352 B2 JP2802352 B2 JP 2802352B2
- Authority
- JP
- Japan
- Prior art keywords
- steel beam
- lower chord
- floor
- tension
- load
- 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 - Lifetime
Links
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- Rod-Shaped Construction Members (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、会議場や見本市会場等、大面積の無柱空間
を備えた建物で、詳しくは、土地の有効利用を意図し
て、前記無柱空間の上部に床を配設してある複数階建て
のものに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a building having a large-area column-free space, such as a conference hall or a trade fair venue. It relates to a multi-storey building where a floor is arranged above a pillarless space.
上記のような建物は、現存していないが、今後、数多
く計画され、構築されると思われる。そして、このよう
な建物では、床を支持する梁が大スバンのものとなるこ
とから、床への積載荷重による床及び梁の鉛直たわみ量
が無視できないものとなると推定できる。つまり、積載
荷重の変動により無視できない鉛直たわみが生じる。The above buildings do not exist yet, but many will be planned and constructed in the future. In such a building, since the beam supporting the floor is a large beam, it can be estimated that the vertical deflection of the floor and the beam due to the load on the floor is not negligible. In other words, a vertical deflection that cannot be ignored due to a change in the loading load occurs.
本発明の目的は、積載荷重の変動にかかわらず、床を
水平レベルに維持できるようにする点にある。An object of the present invention is to enable the floor to be maintained at a horizontal level irrespective of a change in the load.
本発明による建物の特徴構成は、梁として鉄骨梁を設
け、その鉄骨梁の下弦材に緊張力を導入するための導入
手段を設け、その導入手段を操作するための操作手段を
設けてある建物であって、前記鉄骨梁の水平からの鉛直
たわみ量を検出するたわみセンサを設け、そのたわみセ
ンサの検出値に基づいて、検出値を零とさせる緊張力を
下弦材に導入するように前記導入手段を作動させる制御
手段を設けて前記操作手段を構成してある点にある。The feature of the building according to the present invention is that the building is provided with a steel beam as a beam, an introduction means for introducing tension into the lower chord of the steel beam, and an operation means for operating the introduction means. A deflection sensor for detecting the amount of vertical deflection of the steel beam from the horizontal is provided, and based on the detection value of the deflection sensor, the tension is applied to the lower chord material such that the detected value is reduced to zero. A control means for operating the means is provided to constitute the operating means.
床への積載荷重が変動して鉄骨梁に鉛直たわみが生じ
たとき、それに伴って変動した鉄骨梁の鉛直たわみ量が
たわみセンサで検出され、その検出に基づく導入手段の
作動により、鉄骨梁の下弦材に導入される緊張力が積載
荷重による応力を相殺するものに調整されて、鉄骨梁の
鉛直たわみ量が零に戻され、鉄骨梁、つまり、床が自動
的に水平に保持される。When the load on the floor fluctuates and vertical deflection occurs in the steel beam, the vertical deflection amount of the steel beam that fluctuates is detected by the deflection sensor, and the introduction means based on the detection activates the steel beam. The tension introduced into the lower chord is adjusted to offset the stress caused by the load, the vertical deflection of the steel beam is returned to zero, and the steel beam, that is, the floor, is automatically held horizontally.
このように、積載荷重に応じて下弦材に導入する緊張
力を調整することによって、床の鉛直たわみを防止する
ため、例えば、梁として、それ自身及び床の固定荷重
と、予想される積載荷重の最大値とに抗して鉛直たわみ
を起さない高剛性の梁を設ける場合に比較して、梁が小
型、計量で、かつ、安価なものに済む。In this way, by adjusting the tension introduced into the lower chord according to the load capacity, to prevent the vertical deflection of the floor, for example, as a beam, the fixed load of itself and the floor, and the expected load capacity In comparison with the case where a high-rigidity beam which does not cause vertical deflection against the maximum value is provided, the beam can be small, weighed, and inexpensive.
従って、本発明によれば、床が大面積の無柱空間の上
部に配設される場合であっても、梁の大型化、大重量化
及びコストアップを抑制しつつ、床への積載荷重が変動
しても、その床の鉛直たわみを防止して自動的に水平に
維持することができる。Therefore, according to the present invention, even when the floor is disposed above a large-area column-free space, the load on the floor can be reduced while suppressing an increase in the size, weight, and cost of the beam. Even if the floor fluctuates, the floor can be prevented from vertical deflection and automatically kept horizontal.
本発明の実施例を次に示す。 Examples of the present invention will be described below.
建物は、第１図に示すように２階建てのものであっ
て、各階は、外周にのみ柱（１）を有する無柱空間に構
成されている。The building is a two-story building as shown in FIG. 1, and each floor is configured as a pillarless space having pillars (1) only on the outer periphery.
２階の床材（３）は、第３図に示すように、互いに平
行に配置する複数の梁（２）に支持されている。The floor material (3) on the second floor is supported by a plurality of beams (2) arranged in parallel with each other, as shown in FIG.
前記梁（２）は、上弦材（2A）と下弦材（2B）と斜材
（2C）とから成るトラス構造の鉄骨梁である。The beam (2) is a truss-structured steel beam composed of an upper chord (2A), a lower chord (2B), and a diagonal (2C).
かつ、建物は、前記２階の床の鉛直たわみを制御する
たわみ制御システムを備えている。And the building is provided with a deflection control system for controlling the vertical deflection of the floor on the second floor.
前記たわみ制御システムは、前記鉄骨梁（２）の下弦
材（2B）に、下方のたわみに伴なって発生する引張応力
に対抗する緊張力を導入するための導入手段（４）と、
その導入手段（４）を操作するための操作手段とから成
る。An introduction means (4) for introducing into the lower chord member (2B) of the steel beam (2) a tensile force that opposes a tensile stress generated due to the downward flexure;
Operating means for operating the introduction means (4).
前記導入手段（４）は、下弦材（2B）の長手方向両端
をそれらが互いに近づく方向に引張り可能な状態に張設
したPC鋼線、PC鋼棒、PC鋼より線等の緊張材（4A）と、
それに引張力を付与するアクチュエータ（4B）とから成
る。アクチュエータ（4B）は、電動モータや油圧モータ
で駆動されるねじ式のジャッキや、油圧ジャッキ等であ
る。なお、緊張材（4A）は、一端を下弦材（2B）の長手
方向の一端に固定され、他端を、下弦材（2B）の長手方
向の他端に固定したアクチュエータ（4B）の可動部に固
定連結されている。The introduction means (4) includes a tension member (4A) such as a PC steel wire, a PC steel rod, or a PC steel stranded wire in which both ends in the longitudinal direction of the lower chord member (2B) are stretched in a direction in which they can approach each other. )When,
And an actuator (4B) for applying a tensile force thereto. The actuator (4B) is a screw jack driven by an electric motor or a hydraulic motor, a hydraulic jack, or the like. The tension member (4A) has one end fixed to one longitudinal end of the lower chord (2B) and the other end fixed to the other longitudinal end of the lower chord (2B). Is fixedly connected.
また、鉄骨梁（２）は、導入手段（４）により下弦材
（2B）のみに緊張力、つまり、圧縮力が導入されるよう
に、上弦材（2A）の長手方向の両端を柱（１）に定着さ
せ、下弦材（2B）の長手方向の両端を柱（１）に定着さ
せていない。In addition, the steel beam (2) has two longitudinal ends of the upper chord (2A) in columns (1) so that tension is applied only to the lower chord (2B) by the introduction means (4), that is, a compressive force is introduced. ), And both ends in the longitudinal direction of the lower chord material (2B) are not fixed to the pillar (1).
前記鉄骨梁（２）の水平からの鉛直たわみ量（δ）を
検出するたわみセンサ（５）と、制御手段（６）とから
成る。前記制御手段（６）は、前記たわみセンサ（５）
の検出値に基づいて、検出値を零とさせる緊張力（つま
り、鉛直たわみを発生させる鉛直荷重による引張応力や
相殺する圧縮力）を下弦材（2B）に導入するように前記
導入手段（４）のアクチュエータ（4B）を作動させるも
のである。前記鉛直荷重は、鉄骨梁（２）及び床材
（３）の重量による固定荷重と、床上に載った積載荷重
との和である。It comprises a deflection sensor (5) for detecting the vertical deflection (δ) of the steel beam (2) from the horizontal, and a control means (6). The control means (6) includes the deflection sensor (5)
Based on the detected value of (1), the introduction means (4) introduces into the lower chord material (2B) a tension (that is, a tensile stress due to a vertical load that generates vertical deflection or a compressive force that cancels out) into the lower chord material (2B). ) To actuate the actuator (4B). The vertical load is the sum of the fixed load based on the weight of the steel beam (2) and the floor material (3) and the load applied on the floor.
もって、たわみ制御システムは、第２図に示すよう
に、たわみセンサ（５）が鉛直荷重による鉛直たわみ量
（δ）を検出し、それに基づく導入手段（４）の作動で
鉛直荷重による引張応力を相殺する緊張力を下弦材（2
B）に導入して鉄骨梁（２）の鉛直荷重による鉛直たわ
みを防止することにより、鉛直荷重に抗して床を水平レ
ベルに維持するように構成されている。Accordingly, in the deflection control system, as shown in FIG. 2, the deflection sensor (5) detects the amount of vertical deflection (δ) due to the vertical load, and operates the introduction means (4) based thereon to reduce the tensile stress due to the vertical load. To offset the tension, lower the chord material (2
It is configured so that the floor is maintained at a horizontal level against the vertical load by preventing the vertical deflection of the steel beam (2) by being introduced into B).
また、屋根材（７）は、互いに平行に配置する複数の
梁（８）に支持されている。前記梁（８）は、前記２階
の床材（３）を支持する鉄骨梁（２）と同様なトラスト
構造の鉄骨梁であり、、固定荷重により引張応力を相殺
する緊張力を下弦材（8B）に導入する前記と同様な緊張
材（8A）を備えている。The roofing material (7) is supported by a plurality of beams (8) arranged in parallel with each other. The beam (8) is a steel beam having a trust structure similar to the steel beam (2) that supports the floor material (3) on the second floor, and has a lower chord material ( 8B) is provided with a tendon (8A) similar to that described above to be introduced into 8B).
本発明の別実施例を以下に示す。 Another embodiment of the present invention will be described below.
［１］上記実施例では、アクチュエータ（4B）で引張力
が付与される緊張材（4A）によって、固定荷重による引
張応力を相殺する緊張力を鉄骨梁（２）の下弦材（2B）
に導入して、固定荷重による鉄骨梁（２）の鉛直たわみ
を阻止したが、第４図に示すように、上記実施例で示し
た屋根用の鉄骨梁（２）と同様に、固定荷重による引張
応力を相殺する緊張力を下弦材（2B）に導入する固定荷
重用の緊張材（９）を別途設け、前記アクチュエータ
（4B）で引張力が付与され緊張材（4A）によっては、積
載荷重による引張応力を相殺する緊張力のみを下弦材
（2B）に導入するようにしても良い。この場合、積載荷
重による引張応力のみを対象として引張力を緊張材（4
A）に付与すれば良いので、アクチュエータ（4B）とし
て小能力のもで済む。[1] In the above embodiment, the tension member (4A) to which a tensile force is applied by the actuator (4B) is used to reduce the tensile stress caused by the fixed load by the lower chord member (2B) of the steel beam (2).
To prevent the vertical deflection of the steel beam (2) due to the fixed load. However, as shown in FIG. 4, similar to the steel beam (2) for the roof shown in the above embodiment, the vertical deflection of the steel beam (2) A tension member (9) for a fixed load for introducing tension to the lower chord member (2B) to offset the tensile stress is separately provided, and a tension force is applied by the actuator (4B), and depending on the tension member (4A), Only the tension that offsets the tensile stress caused by the tension may be introduced into the lower chord material (2B). In this case, the tensile force is applied only to the tensile stress caused by the loading
Since it only needs to be added to A), the actuator (4B) needs only a small capacity.
［２］上記実施例では、鉄骨梁（２）として、上弦材
（2A）の長手方向の両端で柱（１）に定着するものを示
したが、鉄骨梁（２）としては、第５図に示すように、
下弦材（2B）の両端においても柱（１）に定着するもの
であっても良い。つまり、鉛直荷重によって下弦材（2
B）に引張力が作用するのものであれば、その形状、構
造は問わない。[2] In the above embodiment, the steel beam (2) fixed to the column (1) at both ends in the longitudinal direction of the upper chord material (2A) is shown. As shown in
Both ends of the lower chord material (2B) may be fixed to the pillar (1). In other words, the lower chord (2
Any shape and structure can be used as long as a tensile force acts on B).
［３］上記実施例では、鉄骨梁（２）の下弦材（2B）の
両端同士を互いに近づけるように緊張材（4A）で引張っ
て下弦材（2B）に緊張材（4A）を導入するようにした
が、下弦材（2B）に緊張力を導入するための緊張材（4
A）の設ける形式としては、他に、第５図に示すよう
に、緊張材（4A）の両端を上弦材（2A）の両端に止め、
中間部を下弦材（2B）の中間に掛ける形式等を挙げるこ
とができる。つまり、鉄骨材の使用量を少なくしながら
も、鉛直たわみが生じにくい高剛性の鉄骨梁とするよう
に、鉄骨梁の下弦材に緊張材で緊張力を導入する手段が
種々知られており、それらをいちいち説明しないが、本
発明においては、それら各種の導入手段を、下弦材（2
B）に緊張力を導入するための導入手段（４）に用いる
ことができ、導入手段（４）の形式、構造は問わない。[3] In the above embodiment, the tension member (4A) is introduced into the lower chord member (2B) by pulling the tension member (4A) so that both ends of the lower chord member (2B) of the steel beam (2) are close to each other. However, a tension member (4) is used to introduce tension into the lower chord material (2B).
As another type of A), as shown in FIG. 5, both ends of the tension member (4A) are fixed to both ends of the upper chord member (2A),
The middle part is hung in the middle of the lower chord material (2B). In other words, various means are known for introducing tension into the lower chord of the steel beam using a tension member so as to reduce the amount of steel frame material used, but to provide a high-rigidity steel beam that does not easily cause vertical deflection. Although they will not be described one by one, in the present invention, these various introduction means are referred to as lower chord materials (2
It can be used as the introduction means (4) for introducing tension into B), and the type and structure of the introduction means (4) are not limited.
［４］上記実施例では、２階建ての建物における２階の
床の鉛直たわみを制御するようにしたが、本発明は、３
階以上の建物であれば、３階以上の床の鉛直たわみを制
御する場合にも適用できる。[4] In the above embodiment, the vertical deflection of the floor on the second floor in a two-story building is controlled.
In the case of a building having more than three floors, the present invention can also be applied to the case where the vertical deflection of the three or more floors is controlled.
［５］尚、特許請求の範囲の項に図面との対照を便利に
する為に符号を記すが、該記入により本発明は添付図面
の構成に限定されるものではない。[5] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
第１図乃至第３図は本発明の実施例を示し、第１図は縦
断面図、第２図は積載荷重で鉛直たわみが生じた状態を
示す要部の縦断面図、第３図は梁配置を示す平面図であ
り、第４図と第５図は本発明の別実施例を示す要部の縦
断面図と要部の側面図である。 （２）……鉄骨梁、（2B）……下弦材、（４）……導入
手段、（５）……たわみセンサ、（６）……制御手段。1 to 3 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a longitudinal sectional view of a main part showing a state in which vertical deflection has occurred due to a loaded load, and FIG. FIG. 4 is a plan view showing an arrangement of beams, and FIGS. 4 and 5 are a longitudinal sectional view and a side view of a main part showing another embodiment of the present invention. (2) ... steel beam, (2B) ... lower chord material, (4) ... introduction means, (5) ... deflection sensor, (6) ... control means.
Claims (1)
（２）の下弦材（2B）に緊張力を導入するための導入手
段（４）を設け、その導入手段（４）を操作するための
操作手段を設けてある建物であって、 前記鉄骨梁（２）の水平からの鉛直たわみ量を検出する
たわみセンサ（５）を設け、そのたわみセンサ（５）の
検出値に基づいて、検出値を零とさせる緊張力を下弦材
（2B）に導入するように前記導入手段（４）を作動させ
る制御手段（６）を設けて前記操作手段を構成してある
建物。A steel beam (2) is provided as a beam, and an introduction means (4) for introducing tension into a lower chord (2B) of the steel beam (2) is provided, and the introduction means (4) is provided. A building provided with operating means for operating, comprising: a deflection sensor (5) for detecting a vertical deflection amount of the steel beam (2) from the horizontal, based on a detection value of the deflection sensor (5). And a control means (6) for operating the introduction means (4) so as to introduce a tension force for making the detection value zero to the lower chord material (2B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2253144A JP2802352B2 (en) | 1990-09-20 | 1990-09-20 | building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2253144A JP2802352B2 (en) | 1990-09-20 | 1990-09-20 | building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04131466A JPH04131466A (en) | 1992-05-06 |
| JP2802352B2 true JP2802352B2 (en) | 1998-09-24 |
Family
ID=17247131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2253144A Expired - Lifetime JP2802352B2 (en) | 1990-09-20 | 1990-09-20 | building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2802352B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808515A (en) * | 2011-06-01 | 2012-12-05 | 永升建设集团有限公司 | Construction method of planar heavy roof beam string structure |
| KR102095150B1 (en) * | 2019-05-02 | 2020-03-30 | 변지숙 | Reinforcement System for Concrete Structures |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134454A (en) * | 1984-12-04 | 1986-06-21 | 株式会社竹中工務店 | Non-timbering construction of reinforced concrete building |
-
1990
- 1990-09-20 JP JP2253144A patent/JP2802352B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04131466A (en) | 1992-05-06 |
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