JP2012012796A - Building having large span roof structure - Google Patents

Building having large span roof structure Download PDF

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JP2012012796A
JP2012012796A JP2010148678A JP2010148678A JP2012012796A JP 2012012796 A JP2012012796 A JP 2012012796A JP 2010148678 A JP2010148678 A JP 2010148678A JP 2010148678 A JP2010148678 A JP 2010148678A JP 2012012796 A JP2012012796 A JP 2012012796A
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roof
support
beams
span
main
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JP5457289B2 (en
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Toshihito Kumano
豪人 熊野
Takeshi Katayama
丈士 片山
Takashi Kono
隆史 河野
Hisato Okude
久人 奥出
Naoyuki Takayama
直行 高山
Hosiho Suzuki
星穂 鈴木
Toshihiro Okitsu
俊宏 興津
Kaori Saito
華織 齋藤
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Takenaka Komuten Co Ltd
株式会社竹中工務店
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PROBLEM TO BE SOLVED: To provide a building having a large span roof structure without arranging a vertical support member such as a column to block visibility in the stands, capable of narrowing a large roof support span relative to a span between outer peripheral parts of the stands to reduce stress and deformation of a roof supporting beam with low cost, allowing a sight line from a stand seat not to be blocked with a reduced beam depth, without having a projection part such as a hanging member on a roof surface.SOLUTION: Four roof supporting beams 4 are bridged to vertical support members such as columns 2 arranged at an outer peripheral part of the stands to form a rectangle corresponding to a quadrilateral surrounding a stadium. At positions corresponding to four corners of the rectangle, main beams 5 crossing respective sides of the rectangle in oblique directions are installed in a state that both ends of the beams are supported with vertical support members arranged at the outer peripheral part of the stands. The four roof supporting beams are bridged, so as to be supported by these main beams in oblique directions at intermediate support positions.

Description

本発明は、競技場の周囲に設置されたスタンドの上方を、スタンド外周部に設置した鉛直支持部材で支持された大屋根で覆った大スパン屋根構造建築物に関する。   The present invention relates to a large span roof structure building in which an upper part of a stand installed around a stadium is covered with a large roof supported by a vertical support member installed on an outer periphery of the stand.
競技場の周囲に設置されたスタンドの上方や、そのスタンドの上方を含む競技場全体を大屋根で覆った大スパン屋根構造建築物としては、次の四つの方式が知られている(非特許文献1から一部抜粋)。
(1)片持ち梁方式(横浜国際総合競技場、静岡スタジアム)
(2)斜張式片持ち梁方式(東京スタジアム、茨城県立カシマサッカースタジアム)
(3)先端支持単純梁方式(先端支持材がアーチ形式:神戸ウイングスタジアム、宮城スタジアム、埼玉スタジアム、長居陸上競技場。先端支持材を吊り材で支持する形式:豊田スタジアム、熊本県民総合運動公園陸上競技場)
(4)シェル・ドーム方式(大分スポーツ公園総合競技場、札幌ドーム、新潟スタジアム)
The following four methods are known as a large span roof structure building with a large roof covering the entire stadium including the upper part of the stadium and surrounding the stadium (non-patent) (Excerpt from Reference 1).
(1) Cantilever method (Yokohama International Stadium, Shizuoka Stadium)
(2) Cable-stayed cantilever system (Tokyo Stadium, Ibaraki Kashima Soccer Stadium)
(3) Tip support simple beam method (tip support material is arch form: Kobe wing stadium, Miyagi stadium, Saitama stadium, Nagai track and field stadium. Athletics stadium)
(4) Shell dome method (Oita Sports Park General Stadium, Sapporo Dome, Niigata Stadium)
(1)・(2)の方式は、スタンド外周部に設置された柱等の鉛直支持部材により、当該鉛直支持部材からスタンド内周部側(競技場側)へ跳ね出した屋根支持梁を片持ち支持させたものであるから、荷重伝達方向が一方向であり、柱梁境界部の曲げモーメントの処理、変形制御が課題となる。変形を所定の目標値に納める為には、跳ね出し根元で梁成を大きくしたり、跳ね出し長さ短縮の為の部材配置(方杖や吊り材)等が必要となる。   The methods (1) and (2) use a vertical support member such as a pillar installed on the outer periphery of the stand to separate the roof support beam jumped from the vertical support member toward the inner periphery of the stand (the stadium side). Since it is held and supported, the load transmission direction is one direction, and the processing of bending moment at the column beam boundary and deformation control become problems. In order to keep the deformation within a predetermined target value, it is necessary to increase the beam formation at the base of jumping out, or to dispose members for shortening the jumping length (a cane or a hanging material).
(2)の方式は、片持ち梁の先端を斜め上方へ吊り上げるので、(1)の方式に比べて主架構断面の縮小が可能であり、フィールド面からの視野に対する軽量感は表現できるが、屋根面上に突出したストラットや吊り材の存在が、外観のイメージに大きな影響を及ぼす。また、建築物の高さに制限がある敷地条件では採用が難しい。   In the method (2), the tip of the cantilever is lifted obliquely upward, so that the main frame cross section can be reduced compared to the method (1), and the lightness of the field of view from the field surface can be expressed. Existence of struts and suspension materials protruding on the roof surface has a great influence on the appearance image. In addition, it is difficult to adopt in site conditions where the height of the building is limited.
(3)の方式は、跳ね出しの先端近傍にキールアーチや水平梁を設置することにより、片持ち梁方式から単純梁方式への変換を目指したものであり、キール梁の支持スパン・支持荷重が大きくなる為、キール梁およびキール梁支持材に巨大な部材が配置される。吊り材を設ける形式の場合には、キール材の断面の縮小が可能であり、フィールド面からの視野に対する軽量感は表現できるが、吊り材を支持する巨大なマストの存在が、外観のイメージに大きな影響を及ぼす。また、建築物の高さに制限がある敷地条件では採用が難しい。   The method of (3) aims at conversion from the cantilever beam method to the simple beam method by installing a keel arch or horizontal beam near the tip of the spring. Therefore, a huge member is disposed on the keel beam and the keel beam support material. In the case of a type with suspension material, the cross section of the keel material can be reduced, and it can express the lightness of the field of view from the field surface, but the presence of a huge mast that supports the suspension material is an image of the appearance It has a big effect. In addition, it is difficult to adopt in site conditions where the height of the building is limited.
(4)の方式は、二方向の荷重伝達あるいは立体抵抗を特徴とするが、これらを実現する為には、屋根架構は連続体の性質を有する必要があり、屋根架構全体で荷重に抵抗する為、構造物の全体挙動の把握が必要となる。スペースフレームなどが用いられるが、コストコントロールが課題となる。   The method of (4) is characterized by two-way load transmission or solid resistance, but in order to realize these, the roof frame must have a continuum property, and the entire roof frame resists load. Therefore, it is necessary to grasp the overall behavior of the structure. Space frames are used, but cost control is an issue.
本発明は、上記の従来技術における問題点を踏まえて成されたものであって、その目的
とするところは、競技場の周囲に設置されたスタンドの上方を、スタンド外周部に設置した鉛直支持部材で支持された大屋根で覆った大スパン屋根構造、換言すれば、スタンド内部に視界の妨げとなる柱等の鉛直支持部材を設けない大スパン屋根構造であるにもかかわらず、大屋根の支持スパンをスタンド外周部間のスパンよりも縮小して、屋根支持梁の応力・変形を低減でき、ローコスト化を可能にすると共に、屋根支持梁の梁成を縮小して、屋根支持梁がスタンド客席からの視線の妨げとならないようにすることができ、しかも、屋根面上への吊り材などの突出部が無いので建物高さの制限がある敷地条件下においても採用し易い大スパン屋根構造建築物を提供することにある。
The present invention has been made in view of the above-mentioned problems in the prior art, and the object of the present invention is to provide a vertical support installed on the outer periphery of the stand above the stand installed around the stadium. A large span roof structure covered with a large roof supported by members, in other words, a large span roof structure that does not have vertical support members such as pillars that obstruct visibility within the stand. The support span can be reduced more than the span between the outer peripheries of the stand, so that stress and deformation of the roof support beam can be reduced and the cost can be reduced. Large-span roof structure that can be used even under site conditions where the height of the building is limited because there is no protrusion such as suspension material on the roof surface, so that the line of sight from the audience seats is not obstructed Jian It is to provide a thing.
上記の目的を達成するために、本発明が講じた技術的手段は、次の通りである。即ち、請求項1に記載の発明は、競技場の周囲に設置されたスタンドの上方を、スタンド外周部に設置した鉛直支持部材で支持された大屋根で覆った大スパン屋根構造建築物であって、スタンド外周部に設置された鉛直支持部材に4本の屋根支持梁を競技場の周囲四辺に合わせて方形状に架け渡すにあたり、当該方形状の四隅に対応する位置に、夫々、当該方形状の各辺に対して斜めに交差する斜め方向の主梁を、それらの両端がスタンド外周部に設置した鉛直支持部材で支持された状態に設置し、前記4本の屋根支持梁をこれらの斜め方向の主梁が中間支持点となる状態に架け渡してあることを特徴としている。   In order to achieve the above object, technical measures taken by the present invention are as follows. That is, the invention described in claim 1 is a large span roof structure building in which the upper part of a stand installed around the stadium is covered with a large roof supported by a vertical support member installed on the outer periphery of the stand. When four roof support beams are installed on the vertical support member installed on the outer periphery of the stand in a square shape along the four sides of the stadium, each of them is placed at a position corresponding to the four corners of the square shape. The main beams in the oblique direction obliquely intersecting each side of the shape are installed in a state where both ends thereof are supported by the vertical support members installed on the outer periphery of the stand, and the four roof support beams are installed in these It is characterized in that the main beam in the diagonal direction is bridged over to be the intermediate support point.
尚、本発明において、4本の屋根支持梁を「方形状」に架け渡すとは、4本の屋根支持梁を平面視において「正方形状」や「長方形状」となるように互いに直角に配置し且つ隣り合う2本の屋根支持梁の端部を交差させた「井桁」に架け渡す場合と、4本の屋根支持梁を互いに直角に配置するが、隣り合う2本の屋根支持梁の端部を交差させないように屈曲させた「井桁に近似した形」に架け渡す場合とを包含する意味である。   In the present invention, when four roof support beams are bridged in a “square shape”, the four roof support beams are arranged at right angles to each other so as to be “square” or “rectangular” in plan view. In addition, when the two roof support beams are bridged over a crossed “cross beam” and the four roof support beams are arranged at right angles to each other, the ends of the two adjacent roof support beams This includes the case where it is bridged over a “shape approximating a cross girder” bent so as not to cross each other.
請求項2に記載の発明は、請求項1に記載の大スパン屋根構造建築物であって、4本の屋根支持梁及び斜め方向の主梁がトラス梁であることを特徴としている。   The invention according to claim 2 is the large span roof structure building according to claim 1, characterized in that the four roof support beams and the oblique main beams are truss beams.
請求項3に記載の発明は、請求項2に記載の大スパン屋根構造建築物であって、4本の屋根支持梁が斜め方向の主梁との接合点から両端にかけて位置する梁部分を外側程低くなるよう傾斜させた形状とされていることを特徴としている。   Invention of Claim 3 is a large span roof structure building of Claim 2, Comprising: The beam part in which four roof support beams are located from the junction with a diagonal main beam to both ends is outside It is characterized by a shape that is inclined so as to become lower.
請求項4に記載の発明は、請求項3に記載の大スパン屋根構造建築物であって、斜め方向の主梁を支持する鉛直支持部材が、主梁端部から鉛直面内において両側下方へ傾斜した一対の斜材であることを特徴としている。   Invention of Claim 4 is a large span roof structure building of Claim 3, Comprising: The vertical support member which supports the main beam of the diagonal direction is below both sides in the vertical plane from the main beam edge part It is characterized by being a pair of inclined diagonal materials.
請求項5に記載の発明は、請求項4に記載の大スパン屋根構造建築物であって、スタンド外周部に、4本の屋根支持梁における傾斜下端部と斜め方向の主梁の鉛直支持部材である斜材の足元とを水平面内で環状に連結するテンションリングを設けたことを特徴としている。   Invention of Claim 5 is a large span roof structure building of Claim 4, Comprising: On the stand outer peripheral part, the inclination lower end part in the four roof support beams and the vertical support member of the main beam of the diagonal direction It is characterized in that a tension ring is provided for connecting the feet of the diagonal material in a ring shape in a horizontal plane.
請求項1に記載の発明によれば、方形状の各辺に対して斜め方向に配置することで、スタンド外周部の鉛直支持部材に方形状に架け渡す4本の屋根支持梁よりも支持スパンが短くなる斜め方向の主梁が、4本の屋根支持梁の中間支持点となり、屋根支持梁の支持スパンがスタンド外周部間のスパンよりも縮小され、連梁効果が発揮されることにより、屋根支持梁の応力・変形を低減でき、ローコスト化が可能である。   According to the first aspect of the present invention, the support span is more than that of the four roof support beams extending in a square shape on the vertical support member on the outer periphery of the stand by being arranged obliquely with respect to each side of the square shape. As the main beam in the diagonal direction where the length becomes shorter becomes the intermediate support point of the four roof support beams, the support span of the roof support beam is reduced more than the span between the outer peripheries of the stands, and the continuous beam effect is exhibited, The stress and deformation of the roof support beam can be reduced, and the cost can be reduced.
また、スタンドの客席からの視線や外観の美しさを考慮した場合、梁成に制約を受けることが多いが、この発明によれば、支持スパンが縮小されるので、梁成を小さくして、建
物高さを、吊り材を設けない従来技術よりも小さくした上で、スタンド客席からの視線の妨げとならないようにすることができる。
In addition, considering the beauty of the line of sight from the seat of the stand and the appearance, the beam formation is often restricted, but according to the present invention, since the support span is reduced, the beam formation is reduced, The height of the building can be made smaller than that of the prior art in which no suspension material is provided, and the line of sight from the stand passenger seat can be prevented.
しかも、従来技術として例示した斜張式片持ち梁方式や、吊り材支持形式の先端支持単純梁方式のように、屋根面上への突出部を設ける必要が無いので、建物高さの制限がある敷地条件下においても採用し易い。   Moreover, there is no need to provide a protruding part on the roof surface, unlike the cable-stayed cantilever system exemplified as the prior art and the tip-support simple beam system of the suspension material support type, so there is a limitation on the height of the building. It is easy to adopt even under certain site conditions.
請求項2に記載の発明によれば、上記の効果に加え、4本の屋根支持梁及び斜め方向の主梁を夫々トラス梁としたので、各方向のトラス成を合わせて、接合部の納まりの良い、軽量感の表現された屋根架構を容易かつ経済的に実現できる。即ち、例えば、競技場が長方形である場合、長辺に沿って架設される屋根支持梁と、短辺に沿って架設される屋根支持梁とでは、支持スパンが異なるので、H形鋼の単材による屋根支持梁を単一梁成で経済設計しようとすると、断面諸量の調整が困難である。応力・変形に応じて梁成を変える場合には、接合部の納まりが煩雑となり、美観上の問題もある。また、長大スパンを支持するため断面が大きくなり、架構の軽快さが損なわれる。   According to the invention described in claim 2, in addition to the above effects, the four roof support beams and the main beam in the oblique direction are each a truss beam. It is possible to easily and economically realize a good roof frame that expresses a lightweight feeling. That is, for example, when the stadium is rectangular, the support span is different between the roof support beam constructed along the long side and the roof support beam constructed along the short side. It is difficult to adjust the cross-sectional quantities when trying to economically design a roof support beam made of wood with a single beam. When the beam formation is changed according to the stress / deformation, the fitting of the joint becomes complicated and there is also an aesthetic problem. Further, since the long span is supported, the cross section becomes large, and the lightness of the frame is impaired.
この点、請求項2に記載の発明では、トラス梁を用いることで、各方向のトラス成を合わせたまま、その構成部材(弦材、斜材等)の断面諸量を変えることで、剛性や耐力を望ましい値に調整することが容易である。また、H形鋼の単材と比較して構成部材も縮小できる為、架構の軽快さを確保することができ、ローコスト化も可能である。   In this respect, in the invention described in claim 2, by using the truss beam, the cross-sectional quantities of the constituent members (string material, diagonal material, etc.) are changed while maintaining the truss structure in each direction. It is easy to adjust the proof stress to a desired value. Further, since the structural members can be reduced as compared with the single material of H-section steel, the lightness of the frame can be ensured and the cost can be reduced.
請求項3に記載の発明によれば、上記の効果に加え、4本の屋根支持梁を斜め方向の主梁との接合点から両端にかけて位置する梁部分が外側程低くなるように傾斜した形状としたので、アーチ効果が発生し、曲げ応力・鉛直変形を低減することが可能になる。また、アーチ形状を採用した場合、一般に、アーチ梁端部に大きなスラスト力が発生し、スラスト力を支持する為に大断面の支持部材が必要になるが、この発明によれば、斜め方向に配置した主梁が中間支持点となって、アーチ梁端部の応力を低減することにより、アーチ梁端部のスラスト力支持部材を簡素化することが可能となる。   According to the invention described in claim 3, in addition to the above-described effect, the four roof support beams are inclined so that the beam portions located from the junction points with the main beams in the oblique direction to both ends become lower toward the outside. As a result, an arch effect occurs, and bending stress and vertical deformation can be reduced. In addition, when the arch shape is adopted, generally, a large thrust force is generated at the end portion of the arch beam, and a support member having a large cross section is necessary to support the thrust force. By reducing the stress at the end of the arch beam by using the arranged main beam as an intermediate support point, the thrust force supporting member at the end of the arch beam can be simplified.
請求項4に記載の発明によれば、上記の効果に加え、斜め方向の主梁の端部直下に、鉛直な柱が存在せず、三角形の空間が形成されるので、架構の軽快さを一層強調することができる。   According to the invention described in claim 4, in addition to the above effect, there is no vertical column immediately below the end of the main beam in the oblique direction, and a triangular space is formed. It can be emphasized further.
請求項5に記載の発明によれば、上記の効果に加え、スタンド外周部に、4本の屋根支持梁(トラス梁)における傾斜下端部と斜め方向の主梁の鉛直支持部材である斜め柱の足元とを水平面内で環状に連結するテンションリングを設けたので、屋根支持梁(トラス梁)がアーチ形状に形成されていることに起因するスラスト力を柱等の鉛直支持部材で支持する必要がなく、鉛直支持部材のローコスト化が可能である。殊に、テンションリングをスタンド外周部上部の鉄筋コンクリート梁に埋め込むことにより、高剛性のテンションリングを実現でき、テンションリングによる屋根支持梁(トラス梁)端部の水平変形拘束力を高めて、トラス梁中央部の応力・変形を低減でき、ローコスト化が可能となる。   According to the invention described in claim 5, in addition to the above-described effect, an inclined column which is a vertical supporting member of an inclined lower end portion of the four roof supporting beams (truss beams) and an oblique main beam on the outer periphery of the stand Since a tension ring that connects the foot of the ring in a ring shape in a horizontal plane is provided, it is necessary to support the thrust force caused by the roof support beam (truss beam) being formed in an arch shape with vertical support members such as columns Therefore, the cost of the vertical support member can be reduced. In particular, by embedding the tension ring in the reinforced concrete beam at the upper part of the outer periphery of the stand, a high-rigidity tension ring can be realized. The stress and deformation at the center can be reduced, and the cost can be reduced.
本発明の実施形態を示す大スパン屋根構造建築物の概略平面図である。It is a schematic plan view of the large span roof structure building which shows embodiment of this invention. 図1で示した大スパン屋根構造建築物の概略斜視図である。It is a schematic perspective view of the large span roof structure building shown in FIG. 本発明の他の実施形態を示す大スパン屋根構造建築物の概略斜視図である。It is a schematic perspective view of the large span roof structure building which shows other embodiment of this invention. 本発明の他の実施形態を示す大スパン屋根構造建築物の概略平面図である。It is a schematic plan view of the large span roof structure building which shows other embodiment of this invention. 図4で示した大スパン屋根構造建築物の概略斜視図である。It is a schematic perspective view of the large span roof structure building shown in FIG. 本発明の他の実施形態を示す大スパン屋根構造建築物の概略斜視図である。It is a schematic perspective view of the large span roof structure building which shows other embodiment of this invention. 本発明の他の実施形態を示す大スパン屋根構造建築物の屋根架構の平面図である。It is a top view of the roof frame of the large span roof structure building which shows other embodiment of this invention. 図7で示した屋根架構を持つ大スパン屋根構造建築物の概略斜視図である。It is a schematic perspective view of the large span roof structure building with the roof frame shown in FIG. 図8で示した大スパン屋根構造建築物の詳細な構成を示す斜視図である。It is a perspective view which shows the detailed structure of the large span roof structure building shown in FIG. 図9で示した大スパン屋根構造建築物の外観を示す斜視図である。It is a perspective view which shows the external appearance of the large span roof structure building shown in FIG. 本発明の他の実施形態を示す大スパン屋根構造建築物の屋根架構の概略斜視図である。It is a schematic perspective view of the roof frame of the large span roof structure building which shows other embodiment of this invention. 図11で示した屋根架構を備えた大スパン屋根構造建築物の斜視図である。It is a perspective view of the large span roof structure building provided with the roof frame shown in FIG. 本発明の他の実施形態を示す大スパン屋根構造建築物の屋根架構の概略平面図である。It is a schematic plan view of the roof frame of the large span roof structure building which shows other embodiment of this invention. 図13で示した屋根架構を持つ大スパン屋根構造建築物の概略斜視図である。It is a schematic perspective view of the large span roof structure building with the roof frame shown in FIG. 図14で示した大スパン屋根構造建築物の外観を示す斜視図である。It is a perspective view which shows the external appearance of the large span roof structure building shown in FIG.
図1と図2は、本発明の第一の実施形態を示す。この実施形態は、長方形に形成され、天然芝が貼られた競技場1の周囲に、多数の客席を備えたスタンド(図示せず)が競技場1全周を取り囲む状態に設置され、その上方を、スタンド外周部に設置した鉛直支持部材としての柱2で支持された大屋根3で覆った大スパン屋根構造建築物であって、次の屋根架構形式を採用した点に特徴がある。   1 and 2 show a first embodiment of the present invention. In this embodiment, a stand (not shown) having a large number of auditoriums is installed around a stadium 1 formed in a rectangular shape and attached with natural turf so as to surround the entire circumference of the stadium 1. Is a large span roof structure building covered with a large roof 3 supported by a pillar 2 as a vertical support member installed on the outer periphery of the stand, and is characterized in that the following roof frame form is adopted.
即ち、図1、図2に示すように、スタンド外周部に設置された鉛直支持部材としての柱2に4本の屋根支持梁4を競技場1の周囲四辺に合わせて長方形状の井桁に架け渡すにあたり、当該長方形状の四隅に対応する位置に、夫々、当該長方形状の短辺と長辺に対して平面視において45度斜めに交差する水平な斜め方向の主梁5を、それらの両端がスタンド外周部に設置した鉛直支持部材としての柱2で支持された状態に設置し、前記4本の屋根支持梁4をこれらの斜め方向の主梁5が中間支持点となる状態に架け渡してある。大屋根3の外形はスタンド外周部と平面形状を一致させてある。   That is, as shown in FIGS. 1 and 2, four roof support beams 4 are placed on a pillar 2 as a vertical support member installed on the outer periphery of the stand so as to be laid on a rectangular well girder along the four sides around the stadium 1. When passing, horizontal diagonal main beams 5 that intersect at an angle of 45 degrees in a plan view with respect to the rectangular short side and the long side at positions corresponding to the four corners of the rectangular shape, respectively, at both ends thereof Is installed in a state where it is supported by a pillar 2 as a vertical support member installed on the outer periphery of the stand, and the four roof support beams 4 are bridged in a state where the main beams 5 in the oblique direction serve as intermediate support points. It is. The outer shape of the large roof 3 matches the outer periphery of the stand with the planar shape.
尚、この実施形態においては、大屋根3がスタンドの上方だけを覆うように設けられ、競技場1の上方に開口が形成されている。大屋根3の開口縁は屋根支持梁4より若干内側へ張り出した状態に設けられている。屋根支持梁4や斜め方向の主梁5としては、H形鋼やI形鋼の単材で構成することも可能であるが、図示の実施形態では、図2に示すように、屋根支持梁4や斜め方向の主梁5をトラス梁に構成してある。また、小梁やそれを支持する外周柱は図面上省略してある。   In this embodiment, the large roof 3 is provided so as to cover only the upper part of the stand, and an opening is formed above the playing field 1. The opening edge of the large roof 3 is provided so as to protrude slightly inward from the roof support beam 4. The roof support beam 4 and the main beam 5 in the oblique direction can be made of a single material of H-shape steel or I-shape steel, but in the illustrated embodiment, as shown in FIG. 4 and the main beam 5 in an oblique direction are configured as truss beams. Further, the small beam and the outer peripheral column supporting it are omitted in the drawing.
上記の構成によれば、4本の屋根支持梁4が形づくる長方形状の短辺と長辺に対して斜め方向に配置することで、スタンド外周部の柱(鉛直支持部材)2に架け渡す4本の屋根支持梁4よりも支持スパンが短くなる斜め方向の主梁5が、4本の屋根支持梁4の中間支持点となり、屋根支持梁4の支持スパンがスタンド外周部間のスパンよりも縮小され、連梁効果が発揮されることにより、屋根支持梁4の応力・変形を低減でき、ローコスト化が可能である。   According to said structure, it arrange | positions to the pillar (vertical support member) 2 of a stand outer peripheral part by arrange | positioning in an oblique direction with respect to the rectangular short side and long side which the four roof support beams 4 form 4 The main beam 5 in the oblique direction in which the support span is shorter than that of the four roof support beams 4 becomes an intermediate support point of the four roof support beams 4, and the support span of the roof support beam 4 is larger than the span between the stand outer peripheral portions. By being reduced and exhibiting the continuous beam effect, the stress and deformation of the roof support beam 4 can be reduced, and the cost can be reduced.
また、スタンドの客席からの視線や概観の美しさを考慮した場合、梁成に制約を受けることが多いが、上記の構成によれば、支持スパンが縮小されるので、梁成を小さくして、建物高さを、吊り材を設けない従来技術よりも小さくした上で、スタンド客席からの視線の妨げとならないようにすることができる。   In addition, considering the beauty of the line of sight from the seat of the stand and the appearance, the beam formation is often restricted, but according to the above configuration, the support span is reduced, so the beam formation is reduced. In addition, the height of the building can be made smaller than that of the prior art in which no suspension material is provided, and the line of sight from the stand passenger seat can be prevented from being obstructed.
しかも、従来技術として例示した斜張式片持ち梁方式や、吊り材支持形式の先端支持単純梁方式のように、屋根面上への突出部を設ける必要が無いので、建物高さの制限がある
敷地条件下においても採用し易い。
Moreover, there is no need to provide a protruding part on the roof surface, unlike the cable-stayed cantilever system exemplified as the prior art and the tip-support simple beam system of the suspension material support type, so there is a limitation on the height of the building. It is easy to adopt even under certain site conditions.
殊に、上記の構成によれば、4本の屋根支持梁4及び斜め方向の主梁5を夫々トラス梁としたので、各方向のトラス成を合わせて、接合部の納まりの良い、軽量感の表現された屋根架構を容易かつ経済的に実現できる。即ち、競技場1が長方形であるから、長辺に沿って架設される屋根支持梁4と、短辺に沿って架設される屋根支持梁4とでは、支持スパンが異なるので、H形鋼の単材による屋根支持梁4を単一梁成で経済設計しようとすると、断面諸量の調整が困難であり、応力・変形に応じて梁成を変える場合には、接合部の納まりが煩雑となり、美観上の問題もある。また、長大スパンを支持するため断面が大きくなり、架構の軽快さが損なわれる。   In particular, according to the above configuration, the four roof support beams 4 and the oblique main beam 5 are each a truss beam. It is possible to easily and economically realize the roof frame that expresses In other words, since the stadium 1 is rectangular, the roof support beam 4 constructed along the long side and the roof support beam 4 constructed along the short side have different support spans. If an attempt is made to economically design the roof support beam 4 made of a single material with a single beam, it is difficult to adjust the cross-sectional quantities, and if the beam is changed in accordance with stress and deformation, the fitting of the joint becomes complicated. There are also aesthetic problems. Further, since the long span is supported, the cross section becomes large, and the lightness of the frame is impaired.
この点、上記の実施形態では、トラス梁を用いることで、各方向のトラス成を合わせたまま、その構成部材(弦材、斜材等)の断面諸量を変えることで、剛性や耐力を望ましい値に調整することが容易である。また、H形鋼の単材と比較して構成部材も縮小できる為、架構の軽快さを確保することができ、ローコスト化も可能である。   In this regard, in the above embodiment, by using the truss beams, the cross-section quantities of the constituent members (string material, diagonal material, etc.) are changed while maintaining the truss structure in each direction, so that rigidity and proof strength can be improved. It is easy to adjust to a desired value. Further, since the structural members can be reduced as compared with the single material of H-section steel, the lightness of the frame can be ensured and the cost can be reduced.
図3は、本発明の第二の実施形態を示す。この実施形態は、2本の斜め方向の主梁5における互に近接する側の一端を、1本の柱2で支持することにより、鉛直支持部材としての柱2の本数を減少した点に特徴がある。その他の構成や作用は、図1、図2で示した第一の実施形態と同じであるため、説明を省略する。   FIG. 3 shows a second embodiment of the present invention. This embodiment is characterized in that the number of the pillars 2 as the vertical support members is reduced by supporting one end of the two oblique main beams 5 on the side close to each other with one pillar 2. There is. Other configurations and operations are the same as those of the first embodiment shown in FIGS.
図4、図5は、本発明の第三の実施形態を示す。この実施形態は、4本の斜め方向の主梁5をそれらの端部が互に近接するように配置し、4本の斜め方向の主梁5を4本の柱2で支持することにより、鉛直支持部材としての柱2の本数を最小限まで減少した点に特徴がある。その他の構成や作用は、図1、図2で示した第一の実施形態と実質的に同じであるため、説明を省略する。   4 and 5 show a third embodiment of the present invention. In this embodiment, four diagonal main beams 5 are arranged so that their end portions are close to each other, and the four diagonal main beams 5 are supported by the four columns 2, It is characterized in that the number of pillars 2 as vertical support members is reduced to a minimum. Other configurations and operations are substantially the same as those of the first embodiment shown in FIGS.
図6は、本発明の第四の実施形態を示す。この実施形態は、4本の屋根支持梁4における斜め方向の主梁5との接合点から両端にかけて位置する梁部分4aを外側程低くなるよう傾斜させることにより、4本の屋根支持梁4をアーチ梁とした点に特徴がある。   FIG. 6 shows a fourth embodiment of the present invention. In this embodiment, the four roof support beams 4 are tilted so that the beam portions 4a located at both ends from the joint points with the main beams 5 in the oblique direction in the four roof support beams 4 are lowered toward the outside. It is characterized by an arch beam.
上記の構成によれば、4本の屋根支持梁4を斜め方向の主梁5との接合点から両端にかけて位置する梁部分4aが外側程低くなるように傾斜した形状としたので、アーチ効果が発生し、曲げ応力・鉛直変形を低減することが可能になる。また、アーチ形状を採用した場合、一般に、アーチ梁端部に大きなスラスト力が発生し、スラスト力を支持する為に大断面の支持部材が必要になるが、この実施形態によれば、斜め方向に配置した主梁(トラス梁)5が中間支持点となって、アーチ梁端部の応力を低減することにより、アーチ梁端部のスラスト力支持部材を簡素化することが可能となる。その他の構成や作用は、図1、図2で示した第一の実施形態と同じであるため、説明を省略する。   According to the above configuration, the four roof support beams 4 are inclined so that the beam portions 4a located at both ends from the joint points with the main beams 5 in the oblique direction are lowered toward the outside, so that the arch effect is achieved. It is possible to reduce bending stress and vertical deformation. In addition, when the arch shape is adopted, generally, a large thrust force is generated at the end of the arch beam, and a supporting member having a large cross section is required to support the thrust force. The main beam (truss beam) 5 arranged at the center becomes an intermediate support point, and the stress at the end of the arch beam is reduced, whereby the thrust force support member at the end of the arch beam can be simplified. Other configurations and operations are the same as those of the first embodiment shown in FIGS.
図7〜図10は、本発明の第五の実施形態を示す。この実施形態は、4本の屋根支持梁(トラス梁)4を平面視において長方形状となるように互いに直角に配置するが、井桁ではなく、隣り合う2本の屋根支持梁4の端部を交差させないように斜め方向の主梁(トラス梁)5との接合点から両端にかけて位置する梁部分4aを平面視で互に平行に屈曲させた「井桁に近似した形」に架け渡したこと、及び、4本の屋根支持梁4における斜め方向の主梁(トラス梁)5との接合点から両端にかけて位置する梁部分4aを外側程低くなるよう傾斜させることにより、4本の屋根支持梁4をアーチ梁としたことを特徴としている。   7 to 10 show a fifth embodiment of the present invention. In this embodiment, four roof support beams (truss beams) 4 are arranged at right angles to each other so as to have a rectangular shape in a plan view, but the end portions of two adjacent roof support beams 4 are not cross beams. The beam portions 4a located from the junction point with the main beam (truss beam) 5 in the oblique direction to both ends so as not to intersect with each other are bridged in a “shape similar to a cross beam” bent in parallel with each other in plan view, Further, the four roof support beams 4 are tilted so that the beam portions 4a located from the joint points with the main beams (truss beams) 5 in the oblique direction to the both ends of the four roof support beams 4 become lower toward the outside. It is characterized by using arch beams.
斜め方向の主梁5の両端は、夫々、2本の柱(鉛直支持部材)で支持されているが、図
3で示した第二の実施形態と同様に、2本の斜め方向の主梁5における互に近接する側の一端を、1本の柱2で支持することにより、鉛直支持部材としての柱2の本数を減少してもよい。6は小梁、7は小梁6の一端を支持する外周柱、8は競技場1の周囲に競技場1全周を取り囲む状態に設置されたスタンド、9はスタンド8の外周部と大屋根3の外周部との間に形成された鉛直面内の開口である。大屋根3の外形は八角形であり、スタンド外周部と平面形状を一致させてある。大屋根3の四隅部は外側が低くなるように傾斜し且つ中央が下方へ折り込まれた形状とされている。その他の構成や作用は、図1、図2で示した第一の実施形態や図6で示した第四の実施形態と同じであるため、説明を省略する。
Both ends of the main beam 5 in the oblique direction are supported by two columns (vertical support members), respectively, but the two main beams in the oblique direction are the same as in the second embodiment shown in FIG. The number of the pillars 2 as the vertical support members may be reduced by supporting one end of the side close to each other with the single pillar 2. 6 is a small beam, 7 is an outer column supporting one end of the beam 6, 8 is a stand installed around the stadium 1 so as to surround the entire stadium 1, and 9 is an outer periphery of the stand 8 and a large roof 3 is an opening in the vertical plane that is formed between the outer peripheral portion and the outer peripheral portion. The outer shape of the large roof 3 is an octagon, and the outer periphery of the stand and the planar shape are matched. The four corners of the large roof 3 are inclined so that the outside is lowered and the center is folded downward. Other configurations and operations are the same as those of the first embodiment shown in FIGS. 1 and 2 and the fourth embodiment shown in FIG.
図11、図12は、本発明の第六の実施形態を示す。この実施形態は、4本の屋根支持梁(トラス梁)4における斜め方向の主梁(トラス梁)5との接合点から両端にかけて位置する梁部分4aを外側程低くなるよう傾斜させると共に、当該屋根支持梁4における中央梁部分(斜め方向の主梁5との接合点間に位置する梁部分)を逆梁にして、競技場1の周囲四辺に対応する四方の略水平(水平でもよく、水勾配等を確保するために若干傾斜させてもよいという意味である。)な屋根部分3aを吊下げ支持させたこと、四隅部に斜めに配置する斜め方向の主梁5の形状を、下弦材が全長にわたって水平であって、且つ、両側の屋根支持梁4との接合点間に位置する中央の梁部分については上弦材を水平に配置すると共に、梁成を高くし、屋根支持梁4との接合点から両端にかけて位置する梁部分5aについては梁端に至るほど低くなるように上弦材を傾斜させた形状としたこと、四隅部に配置される屋根部分3bについては、斜め方向の主梁5と、屋根支持梁4における斜め方向の主梁5との接合点から両端にかけて位置する梁部分4aとで支持された外下がりに傾斜し、且つ、前記梁部分4aの位置を折線として両側が下方へ折れ曲った形状としたことを特徴としている。   11 and 12 show a sixth embodiment of the present invention. In this embodiment, the four roof support beams (truss beams) 4 are inclined so that the beam portions 4a located from the joint points with the main beams (truss beams) 5 in the oblique direction to both ends become lower toward the outside, and The central beam portion (the beam portion located between the joint points with the main beam 5 in the oblique direction) in the roof support beam 4 is an inverted beam, and the four sides corresponding to the four sides around the stadium 1 may be substantially horizontal (horizontal, This means that the roof portion 3a may be suspended and supported, and the shape of the main beam 5 in the oblique direction arranged diagonally at the four corners is the lower string. For the central beam portion that is horizontal across the entire length and is located between the joints with the roof support beams 4 on both sides, the upper chord material is arranged horizontally, the beam formation is increased, and the roof support beam 4 Beam part located from the joint point to both ends As for a, the shape of the upper chord material is inclined so as to become lower toward the end of the beam, and for the roof portion 3b arranged at the four corners, the oblique main beam 5 and the oblique direction in the roof support beam 4 Inclined outwardly supported by the beam portion 4a located from the junction point with the main beam 5 to both ends, and the shape of the beam portion 4a is bent downward with the position of the beam portion 4a as a broken line. It is a feature.
この構成によれば、大屋根3が競技場1の周囲四辺に対応する四方の略水平な屋根部材3aと四隅部の外下がりに傾斜した屋根部材3bとで構成され、平面視においては、競技場1の周囲を途切れることなく連続して囲繞する環状を呈するが、側面視においては、水平な屋根部材3aと四隅部の傾斜した屋根部材3bとの間に、斜め方向の主梁5の梁成に対応する空間が形成され、水平な屋根部分3aの上に屋根支持梁4が露出した形状の大屋根3となる。これらの結果として、軽量感の強調された美麗な外観が得られる。その他の構成や作用は、図7〜図10の実施形態と同じであるため、説明を省略する。   According to this structure, the large roof 3 is comprised by the substantially horizontal roof member 3a of the four sides corresponding to the surrounding four sides of the stadium 1, and the roof member 3b inclined outwardly at the four corners. Although it presents a ring that continuously surrounds the field 1 without interruption, the beam of the main beam 5 in the oblique direction is interposed between the horizontal roof member 3a and the roof member 3b inclined at the four corners in a side view. A space corresponding to the formation is formed, and the large roof 3 has a shape in which the roof support beams 4 are exposed on the horizontal roof portion 3a. As a result of these, a beautiful appearance with an emphasis on lightness is obtained. Other configurations and operations are the same as those in the embodiment of FIGS.
図13〜図15は、本発明の第七の実施形態を示す。この実施形態は、斜め方向の主梁5を支持する鉛直支持部材として、主梁5端部から鉛直面内において両側下方へ傾斜した一対の斜材2a、2bを設けたこと、及び、スタンド外周部に、4本の屋根支持梁4の傾斜下端部と斜め方向の主梁5の鉛直支持部材である斜材2a、2bの足元とを水平面内で環状に連結するテンションリング10を設けたことを特徴としている。   13 to 15 show a seventh embodiment of the present invention. In this embodiment, as a vertical support member for supporting the main beam 5 in the oblique direction, a pair of diagonal members 2a and 2b inclined downward on both sides in the vertical plane from the end of the main beam 5 are provided, and the stand outer periphery Provided with a tension ring 10 for connecting the inclined lower ends of the four roof support beams 4 and the feet of the diagonal members 2a and 2b, which are the vertical support members of the main beam 5 in the oblique direction, in an annular manner in a horizontal plane. It is characterized by.
上記の構成によれば、斜め方向の主梁(トラス梁)5の端部直下に、鉛直な柱が存在せず、三角形の空間11が形成されるので、架構の軽快さを一層強調することができる。しかも、スタンド外周部に、4本の屋根支持梁(トラス梁)4における傾斜下端部と斜め方向の主梁5の鉛直支持部材である斜材2a、2bの足元とを水平面内で環状に連結するテンションリング10を設けたので、屋根支持梁(トラス梁)4がアーチ形状に形成されていることに起因するスラスト力を柱等の鉛直支持部材で支持する必要がなく、鉛直支持部材のローコスト化が可能である。   According to the above configuration, the vertical column does not exist immediately below the end of the diagonal main beam (truss beam) 5 and the triangular space 11 is formed, so that the lightness of the frame is further emphasized. Can do. In addition, the lower end of the four roof support beams (truss beams) 4 and the feet of the diagonal members 2a and 2b, which are the vertical support members of the main beam 5 in the oblique direction, are annularly connected to the outer periphery of the stand in a horizontal plane. Since the tension ring 10 is provided, it is not necessary to support the thrust force caused by the roof support beam (truss beam) 4 being formed in the arch shape by the vertical support member such as a column, and the low cost of the vertical support member. Is possible.
尚、前記テンションリング10は、図14に示すように、水平なトラス梁によって構成されているが、テンションリング10の構成はこれに限定されない。例えば、大屋根3の外形とスタンド外周部の平面形状を一致させ、テンションリングをスタンド外周部上部の鉄筋コンクリート梁に埋め込むことにより、高剛性のテンションリングを実現でき、テン
ションリングによる屋根支持梁(トラス梁)4端部の水平変形拘束力を高めて、トラス梁中央部の応力・変形を低減でき、ローコスト化が可能となる。また、斜材2a、2bと合わせて鉛直柱を設定することで斜材2a、2bの断面積を縮小することも可能である。
As shown in FIG. 14, the tension ring 10 is composed of a horizontal truss beam, but the configuration of the tension ring 10 is not limited to this. For example, by aligning the outer shape of the large roof 3 with the planar shape of the outer periphery of the stand and embedding the tension ring in the reinforced concrete beam at the upper part of the outer periphery of the stand, a highly rigid tension ring can be realized. The horizontal deformation restraining force at the four ends of the beam can be increased to reduce the stress / deformation at the central part of the truss beam, and the cost can be reduced. It is also possible to reduce the cross-sectional area of the diagonal members 2a and 2b by setting a vertical column together with the diagonal members 2a and 2b.
上記の各実施形態においては、何れも、大屋根3がスタンド8の上方にのみ設けられ、競技場1の真上が開口しているが、本発明が、競技場1の周囲に設置されたスタンド8の上方だけでなく、そのスタンド8の上方を含む競技場全体を大屋根3で覆った大スパン屋根構造建築物として実施できることは勿論である。   In each of the above-described embodiments, the large roof 3 is provided only above the stand 8 and the stadium 1 is open, but the present invention is installed around the stadium 1. Of course, it can be implemented not only above the stand 8 but also as a large span roof structure building in which the entire stadium including the upper portion of the stand 8 is covered with the large roof 3.
1 競技場
2 鉛直支持部材としての柱
2a、2b 鉛直支持部材としての斜材
3 大屋根
3a、3b 屋根部分
4 屋根支持梁
4a 梁部分
5 斜め方向の主梁
5a 梁部分
6 小梁
7 外周柱
8 スタンド
9 鉛直面内の開口
10 テンションリング
11 三角形の空間
DESCRIPTION OF SYMBOLS 1 Stadium 2 Column as vertical support member 2a, 2b Diagonal material as vertical support member 3 Large roof 3a, 3b Roof part 4 Roof support beam 4a Beam part 5 Diagonal main beam 5a Beam part 6 Small beam 7 Outer pillar 8 Stand 9 Open in vertical plane 10 Tension ring 11 Triangular space

Claims (5)

  1. 競技場の周囲に設置されたスタンドの上方を、スタンド外周部に設置した鉛直支持部材で支持された大屋根で覆った大スパン屋根構造建築物であって、スタンド外周部に設置された鉛直支持部材に4本の屋根支持梁を競技場の周囲四辺に合わせて方形状に架け渡すにあたり、当該方形状の四隅に対応する位置に、夫々、当該方形状の各辺に対して斜めに交差する斜め方向の主梁を、それらの両端がスタンド外周部に設置した鉛直支持部材で支持された状態に設置し、前記4本の屋根支持梁をこれらの斜め方向の主梁が中間支持点となる状態に架け渡してあることを特徴とする大スパン屋根構造建築物。   A large span roof structure building with a large roof supported by a vertical support member installed on the outer periphery of the stand above the stand installed around the stadium. The vertical support installed on the outer periphery of the stand When four roof support beams are laid on a member in a square shape along the four sides of the stadium, each of the sides of the square shape is crossed obliquely at positions corresponding to the four corners of the square shape. The diagonal main beams are installed in a state where both ends thereof are supported by vertical support members installed on the outer periphery of the stand, and the four main beams in the diagonal direction serve as intermediate support points. A large-span roof structure building that spans the state.
  2. 4本の屋根支持梁及び斜め方向の主梁がトラス梁であることを特徴とする請求項1に記載の大スパン屋根構造建築物。   4. The large span roof structure building according to claim 1, wherein the four roof support beams and the oblique main beam are truss beams.
  3. 4本の屋根支持梁が斜め方向の主梁との接合点から両端にかけて位置する梁部分を外側程低くなるよう傾斜させた形状とされていることを特徴とする請求項2に記載の大スパン屋根構造建築物。   3. The large span according to claim 2, wherein the four roof support beams have a shape in which the beam portions located from the junction points with the main beam in the oblique direction to both ends are inclined so as to become lower toward the outside. Roof structure building.
  4. 斜め方向の主梁を支持する鉛直支持部材が、主梁端部から鉛直面内において両側下方へ傾斜した一対の斜材であることを特徴とする請求項3に記載の大スパン屋根構造建築物。   4. A large span roof structure building according to claim 3, wherein the vertical support members for supporting the oblique main beam are a pair of diagonal members inclined downward on both sides in the vertical plane from the main beam end. .
  5. スタンド外周部に、4本の屋根支持梁における傾斜下端部と斜め方向の主梁の鉛直支持部材である斜材の足元とを水平面内で環状に連結するテンションリングを設けたことを特徴とする請求項4に記載の大スパン屋根構造建築物。   A tension ring is provided on the outer periphery of the stand to connect the lower end of the slope of the four roof support beams and the foot of the diagonal member, which is the vertical support member of the main beam in the oblique direction, in an annular manner in a horizontal plane. The large span roof structure building according to claim 4.
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JP2014069121A (en) * 2012-09-28 2014-04-21 Kajima Corp Facility with roof frame
JP2015209650A (en) * 2014-04-24 2015-11-24 株式会社竹中工務店 Stadium
CN105672478A (en) * 2016-03-15 2016-06-15 叶长青 Roof structure of long-span building
JP2016142116A (en) * 2015-02-05 2016-08-08 株式会社竹中工務店 Roof structure

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JP2014069121A (en) * 2012-09-28 2014-04-21 Kajima Corp Facility with roof frame
JP2015209650A (en) * 2014-04-24 2015-11-24 株式会社竹中工務店 Stadium
JP2016142116A (en) * 2015-02-05 2016-08-08 株式会社竹中工務店 Roof structure
CN105672478A (en) * 2016-03-15 2016-06-15 叶长青 Roof structure of long-span building
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CN107700843B (en) * 2016-03-15 2020-05-01 叶长青 Construction method of large-span building roof structure

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