JPH0693603A - Beam structure by use of inverted arched member and slantingly extended structure and arched member thereof - Google Patents

Beam structure by use of inverted arched member and slantingly extended structure and arched member thereof

Info

Publication number
JPH0693603A
JPH0693603A JP24354392A JP24354392A JPH0693603A JP H0693603 A JPH0693603 A JP H0693603A JP 24354392 A JP24354392 A JP 24354392A JP 24354392 A JP24354392 A JP 24354392A JP H0693603 A JPH0693603 A JP H0693603A
Authority
JP
Japan
Prior art keywords
cable
arch
shaped arc
pedestal
reverse
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
Application number
JP24354392A
Other languages
Japanese (ja)
Inventor
Toshiyuki Kitsuta
敏之 橘田
Nobuyuki Murata
信之 村田
Yukiya Furuta
幸也 古田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kumagai Gumi Co Ltd
Original Assignee
Kumagai Gumi Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kumagai Gumi Co Ltd filed Critical Kumagai Gumi Co Ltd
Priority to JP24354392A priority Critical patent/JPH0693603A/en
Publication of JPH0693603A publication Critical patent/JPH0693603A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the cost and enhance the sight by fixing the lower end of a cable fastened at the upper end of a stud to a reinforcing girder and supporting the inverted arched member provided at the lower part of the reinforcing girder at the cable stud. CONSTITUTION:An invented arched member 25 is arranged at the lower part of a reinforcing girder 24 and the direction of curved surface near both ends of arched member at the lower part thereof is forced to nearly coincide with the slanting direction of the suspended cable 23. The member 25 is constituted of concrete arched members in which PC steel members or the like are imbeded, a plurality of posts, a covering member placed thereon. The stress on the member 25 is divided to a plurality of respective posts to support the member 25 by the cables 23 having the same tensile strength with the prior art one. In this way, it is not necessary that cables are fixed in places of the upper part of inverted arched member and further, the span can be made longer without necessity to make the stud higher and the stud can be made lower when the span is the same. Moreover, slantingly extended bridges having variety can be formed in comparison with the prior art forms.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は逆アーチ状弧部材及び
斜張構造を用いた梁構築装置及び該梁構築装置に用いる
逆アーチ状弧部材に関するものであり、特に、斜張橋又
は大空間構造の屋根梁等の構築に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam construction device using a reverse arch-shaped arc member and a cable-stayed structure and a reverse arch-shaped arc member used in the beam construction device, and more particularly to a cable-stayed bridge or a large space. It relates to the construction of structural roof beams and the like.

【0002】[0002]

【従来の技術】従来の此種梁構造物の例を橋梁構造につ
いて図5乃至図7に従って説明する。図5は吊橋1の側
面図である。該吊橋1は図に於て左右の橋台2,2間の
河底に二本の脚柱3,3が立設され、更に、該脚柱3,
3間並びに左右の夫々の橋台2,2間にケーブル4,
4,4を架設し、更に、該ケーブル4,4,4からハン
ガー5,5…を垂設して補剛桁6を支持して成るもので
ある。
2. Description of the Related Art An example of a conventional beam structure of this type will be described for a bridge structure with reference to FIGS. FIG. 5 is a side view of the suspension bridge 1. In the suspension bridge 1, two pedestals 3 and 3 are erected on the riverbed between the abutments 2 and 2 on the left and right in the figure.
Cable 4 between 3 and each abutment 2, 2 on the left and right
4, 4 are erected, and hangers 5, 5 ... Are hung from the cables 4, 4, 4 to support the stiffening girder 6.

【0003】図6は斜張橋7を示す。該斜張橋7は左右
の橋台8,8間の河底に二本の脚柱9,9が立設され、
更に、該脚柱9,9上に吊ケーブル10,10…の上端
部を固設し、更に、該吊ケーブル10,10…を下方へ
斜設して、該吊ケーブル10,10…の下端部を補剛桁
11に一定間隔毎に固設し、該補剛桁11を該吊ケーブ
ル10,10…により前記脚柱9,9に支持せしめて成
るものである。
FIG. 6 shows a cable-stayed bridge 7. The cable-stayed bridge 7 has two stanchions 9, 9 standing on the riverbed between the left and right abutments 8, 8.
Further, the upper ends of the suspension cables 10, 10 ... Are fixedly mounted on the stanchions 9, 9, and the suspension cables 10, 10 ... The parts are fixed to the stiffening girders 11 at regular intervals, and the stiffening girders 11 are supported on the stanchions 9, 9 by the suspension cables 10, 10, ....

【0004】図7は他の斜張橋7aを示す。該斜張橋7
aは図6の斜張橋7と本質的には同一であるので対象部
分は同一符号を付してその説明を省略する。唯、同図に
於ては脚柱9を三本設け、各脚柱9,9,9に夫々前記
吊ケーブル10,10…を相似形に斜設した点が図6に
示す斜張橋7と異っている。尚、図5及び図6に於て符
号Lは中央径間、L1 は左右の側径間を示し、図5のS
はサグを示す。更に、図7に於てHは脚柱9の高さを示
す。
FIG. 7 shows another cable-stayed bridge 7a. The cable-stayed bridge 7
Since “a” is essentially the same as the cable-stayed bridge 7 in FIG. 6, the target parts are given the same reference numerals and the description thereof will be omitted. In FIG. 6, only three pillars 9 are provided, and the suspension cables 10, 10 ... Are obliquely installed in a similar shape on each pillar 9, 9, 9, respectively. Is different. 5 and 6, reference symbol L indicates a center span, L 1 indicates the left and right side spans, and S in FIG.
Indicates sag. Further, in FIG. 7, H indicates the height of the pedestal 9.

【0005】[0005]

【発明が解決しようとする課題】吊橋は左右の橋台とし
てアンカレッジが必要であり、そのため、該アンカレッ
ジの設置地点の地盤条件が該アンカレッジに適する条件
を備えていなければならない。斯くして、吊橋構築に際
しては先ずアンカレッジ設置のための制約がある。
The suspension bridge requires anchorages for the left and right abutments, and therefore the ground conditions at the location where the anchorages are installed must satisfy the conditions suitable for the anchorages. Thus, when constructing a suspension bridge, there is a constraint to install an anchorage.

【0006】之に対して斜張橋は側径間の重量に対応し
て該斜張橋のケーブルが取付けられるのであるから、橋
台(アバット)の設置位置の地盤条件は緩和される。
又、最近は景観の点からも該斜張橋が用いられる傾向に
ある。而して、前記吊橋及び斜張橋は双方とも高い脚柱
を必要とすると云う問題点がある。即ち、吊橋では主索
であるケーブルの重量が減少することが主索の経済化を
図るだけでなく、アンカレッジ設置費用節減にも大きく
影響する。そのためには、主索形状のサグ量を可及的に
大に形成せざるを得なくなる。斯くすることにより必然
的に高い脚柱が必要となる。
On the other hand, since the cable of the cable-stayed bridge is attached to the cable-stayed bridge according to the weight of the side span, the ground condition at the installation position of the abutment (abut) is eased.
Recently, the cable-stayed bridge has tended to be used from the viewpoint of scenery. Thus, both the suspension bridge and the cable-stayed bridge have a problem that they require high pedestals. That is, in the suspension bridge, the reduction of the weight of the cable, which is the main rope, not only makes the main rope economical, but also greatly reduces the cost of installing the anchorage. For that purpose, the sag amount of the main rope shape must be formed as large as possible. This inevitably requires a high pedestal.

【0007】又、斜張橋に於ても、補剛桁を吊上げるた
めの吊ケーブルの有効吊上げ力を大きくするために、高
い脚柱が必要となる。然し乍ら、脚柱は橋梁全体のバラ
ンス、環境、コスト面等からその高さに制約があること
が多いので脚柱の高さを低くし、そして、径間の長さは
大きくした橋梁を構築しようと試みても、それは極めて
困難である。更に、脚柱数を少なくして長径間の構築を
為すときにも、斜張橋構造は適当でない場合が多い。更
に又、景観面からも吊橋及び斜張橋構造のみでは大した
変化もない。
Even in a cable-stayed bridge, a high pedestal is required to increase the effective hoisting force of the suspension cable for hoisting the stiffening girder. However, since the pedestal is often restricted in height due to the balance of the entire bridge, environment, cost, etc., let's reduce the height of the pedestal and build a bridge with a large span length. However, it is extremely difficult. Furthermore, the cable-stayed bridge structure is often not suitable even when the number of columns is reduced to construct a long span. Furthermore, from the viewpoint of landscape, there is no great change with only the suspension bridge and cable-stayed bridge structure.

【0008】そこで、短かい脚柱を用い、或いは脚柱の
本数を減じて長径間の梁構築を可能にし、且つ、変化の
ある外形を有して景観面の評価を向上せしめ、且つ、コ
ストダウンにも寄与できる梁構築を為すために解決せら
るべき技術的課題が生じてくるのであり、本発明は該課
題を解決することを目的とする。
Therefore, it is possible to use a short pedestal or reduce the number of pedestals to construct a beam with a long diameter, and to improve the evaluation of the landscape with a variable outer shape, and to reduce the cost. A technical problem to be solved in order to construct a beam that can also contribute to down occurs, and an object of the present invention is to solve the problem.

【0009】[0009]

【課題を解決するための手段】この発明は上記目的を達
成するために提案せられたものであり、上端を脚柱に固
設したケーブルの下端部を補剛桁に固設して該補剛桁を
支持するようにした斜張構造に於て、該補剛桁に、該補
剛桁の下方に位置するように配設せられる逆アーチ状弧
部材を連設し、且つ、該逆アーチ状弧部材も前記ケーブ
ルにより前記脚柱に支持せしめるようにしたことを特徴
とする逆アーチ状弧部材及び斜張構造を用いた梁構築装
置、及び上記逆アーチ状弧部材は、PC鋼材等の補強材
を埋設したコンクリート製アーチ部材と、該アーチ部材
上に所定間隔毎に立設された柱部材及び該柱部材の上方
部に配設される上載部材とから成る梁構築装置に用いら
れる逆アーチ状弧部材を提供するものである。
SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object, and the lower end of a cable whose upper end is fixed to a pedestal is fixed to a stiffening girder. In a cable-stayed structure adapted to support a rigid girder, the stiffener girder is provided with a reverse arch-shaped arc member arranged so as to be located below the stiffener girder, and An arch-shaped arc member is also supported on the pedestal by the cable, and a beam construction device using a reverse arch-shaped arc member and a cable-stayed structure, and the reverse arch-shaped arc member is made of PC steel or the like. Used in a beam construction device comprising a concrete arch member in which the reinforcing material is embedded, pillar members standing upright at predetermined intervals on the arch member, and a mounting member arranged above the pillar member. A reverse arcuate arc member is provided.

【0010】[0010]

【作用】この発明は、斜張構造の補剛桁に、該補剛桁の
下方に位置するように配設せられた逆アーチ状弧部材を
連設し、そして、該逆アーチ状弧部材を前記補剛桁と同
様に吊ケーブルによって脚柱に支持され、そして、該逆
アーチ状弧部材に負荷される応力は該逆アーチ状弧部材
を構成する最下部のコンクリート製アーチ部材に所定間
隔を有して立設される柱部材に分散され、斯くして、前
記ケーブルの張力は殆ど従前と同一程度のものを用いる
ことができ、依って、脚柱の高さも大きく設ける必要も
なくなる。又、補剛桁に連設された前記逆アーチ状弧部
材の長さ相当分の長さを従来の径間の長さに付加された
梁構造が構築されることも可能となる。
According to the present invention, a reverse arch-shaped arc member arranged so as to be located below the stiffening girder is connected to a stiffening girder having a cable-stayed structure, and the reverse arch-shaped arc member is provided. Similarly to the stiffening girder, the stress is supported on the pedestal by the suspension cable, and the stress applied to the reverse arch-shaped arc member is set at a predetermined interval in the lowermost concrete arch member forming the reverse arch-shaped arc member. The tension of the cable can be almost the same as before, so that the height of the pedestal need not be increased. Further, it is possible to construct a beam structure in which the length corresponding to the length of the reverse arch-shaped arc member connected to the stiffening girder is added to the conventional span length.

【0011】更に又、従来二本の脚柱を用いた斜張構造
は、逆アーチ状弧部材を一方の補剛桁に連設することに
より、従来と略同一の径間長さであって、且つ、脚柱も
従来と略同一の高さのものを用いるとしても、該脚柱は
一本用いることにより該梁構造物を構築することもでき
る。更に、二本の脚柱を用いるとしても該逆アーチ状弧
部材を連設することにより該脚柱の高さを可及的に低く
形成することも可能となる。
Furthermore, the conventional cable-stayed structure using two stanchions has a span length substantially the same as the conventional one by connecting the reverse arch-shaped arc member to one stiffening girder. Further, even if the pedestal having the same height as the conventional one is used, the beam structure can be constructed by using one pedestal. Further, even if two columns are used, the height of the columns can be made as low as possible by connecting the inverted arch-shaped arc members in series.

【0012】一方、該逆アーチ状弧部材はPC鋼材等の
補強材を埋設されているので強度が大であり、更に、ア
ーチ部材と上載部材間の所定間隔毎に柱部材を介設して
いるので、従来の吊床版橋等に比し、鉛直方向の撓みが
著しく軽減される。
On the other hand, the reverse arch-shaped arc member has a large strength because it is embedded with a reinforcing material such as PC steel material, and further, pillar members are provided at predetermined intervals between the arch member and the mounting member. As a result, vertical bending is significantly reduced compared to conventional suspension deck bridges.

【0013】[0013]

【実施例】以下、本発明の一実施例を橋梁に実施した例
を図1乃至図4に従って詳述する。尚、説明の都合上、
従来の技術も同時に説明し、且つ、その詳細な説明は省
略するものとする。図1は図6の従来技術に対応した斜
張橋20の側面図である。該斜張橋20はアパットと称
する橋台21,21間の河底に二本の脚柱22,22を
立設し、該脚柱22,22の上端部より吊ケーブル2
3,23…を下方へ斜設し、そして、該吊ケーブル2
3,23…の下端部を補剛桁24に所定の間隔毎に固定
して該補剛桁24を該脚柱22,22に支持せしめてい
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention applied to a bridge will be described in detail below with reference to FIGS. For convenience of explanation,
The conventional technique will be described at the same time, and the detailed description thereof will be omitted. FIG. 1 is a side view of a cable-stayed bridge 20 corresponding to the conventional technique of FIG. The cable-stayed bridge 20 has two stanchions 22, 22 erected on the riverbed between abutments 21, 21 called Apat, and the suspension cable 2 is installed from the upper ends of the stanchions 22, 22.
3, 23 ... are obliquely installed downward, and the suspension cable 2
.. are fixed to the stiffening girders 24 at predetermined intervals so that the stiffening girders 24 are supported by the stanchions 22, 22.

【0014】而して、前記補剛桁24の中央部には、両
端部に夫々前記吊ケーブル23,23…と一体的に結合
されて該吊ケーブル23,23…を介して前記脚柱2
2,22に支持される逆アーチ状弧部材25を連結され
ている。又、該逆アーチ状弧部材25は前記補剛桁24
の下方に配設されるのであり、而も、該逆アーチ状弧部
材25を形成する下方部のアーチ部材25aの両端部近
傍の曲面方向が該逆アーチ状弧部材25と結合される吊
ケーブル23,23…の斜設方向と略一致するように形
成される。
Thus, the central portion of the stiffening girder 24 is integrally connected to the suspension cables 23, 23 ... At both ends, and the pedestal 2 is connected via the suspension cables 23.
Reverse arcuate arc members 25 supported by 2 and 22 are connected. In addition, the reverse arch-shaped arc member 25 is the stiffener girder 24.
The hanging cable in which curved surfaces in the vicinity of both ends of the lower arch member 25a forming the reverse arch-shaped arc member 25 are connected to the reverse arch-shaped arc member 25. It is formed so as to substantially coincide with the oblique direction of 23, 23 ...

【0015】而して、該逆アーチ状弧部材25は、図4
に示す如くPC鋼材等の補強筋26,26…を埋設し、
且つ、逆アーチ状に成形されたコンクリート製のアーチ
部材25aと、該アーチ部材25aの左右端部に所定間
隔毎に立設された柱部材27,27…と、該柱部材2
7,27…上に固設された梁受部材28並びに、該梁受
部材28上に載設される上載部材29とから成る。而
も、該梁受部材28及び上載部材29は略平板状に形成
され、且つ、該上載部材29と前記補剛桁24とは同一
平面上に連結される。
Thus, the reverse arcuate arc member 25 is shown in FIG.
As shown in Fig. 6, by embedding the reinforcing bars 26, 26 ... Of PC steel material,
Further, the arch member 25a made of concrete and formed in the shape of a reverse arch, the column members 27, 27 ... Standing up at right and left end portions of the arch member 25a at predetermined intervals, and the column member 2
7, 27 ... and a beam receiving member 28 fixed on the beam receiving member 28, and an upper mounting member 29 mounted on the beam receiving member 28. Further, the beam receiving member 28 and the upper mounting member 29 are formed in a substantially flat plate shape, and the upper mounting member 29 and the stiffening girder 24 are connected on the same plane.

【0016】次に、図2の実施例図に従って説明する。
同図に示す斜張橋20aも図6の従来の斜張橋に対応す
るものであり、且つ、図1の斜張橋20と対応する部分
は同一符号を付してその説明を省略する。図に於て、該
斜張橋20aは、片方の橋台21側に一本の脚柱22を
立設すると共に、他方の橋台21側に前記逆アーチ状弧
部材25を配設している。而して、該逆アーチ状弧部材
25の左端部は、脚柱22から斜設されている最外側部
の吊ケーブル23,23…と一体的結合されて、該吊ケ
ーブル23,23…を介して前記脚柱22に支持される
と共に、その右端部は前記橋台21に直接結合して支持
されている。尚、図1及び図2に於て、符号Lは中央径
間であり、L1 は側径間を示す。
Next, a description will be given according to the embodiment diagram of FIG.
The cable-stayed bridge 20a shown in the figure also corresponds to the conventional cable-stayed bridge in FIG. 6, and the portions corresponding to the cable-stayed bridge 20 in FIG. 1 are denoted by the same reference numerals and the description thereof will be omitted. In the figure, the cable-stayed bridge 20a has one pedestal 22 standing on one abutment 21 side and the reverse arch-shaped arc member 25 on the other abutment 21 side. The left end portion of the reverse arch-shaped arc member 25 is integrally connected to the outermost suspension cables 23, 23, ... It is supported by the pedestal 22 through and its right end is directly coupled to and supported by the abutment 21. In FIGS. 1 and 2, the symbol L indicates the center span, and L 1 indicates the side span.

【0017】次に、図3の実施例図に従って説明する。
同図に示す斜張橋30は図7に示す斜張橋7aと対応す
るものであるので対応部分は同一符号を付してその説明
を省略する。而して、図3に於ては前記図7に示す中央
部の脚柱9と、該中央部の脚柱9の左右の脚柱9,9間
に夫々斜設されて補剛桁11に固設されている左右の吊
ケーブル10,10…に前記逆アーチ状弧部材25,2
5を夫々連結し、そして、該吊ケーブル10,10…を
介して該脚柱9,9,9に補剛桁11と共に支持される
ように構成されている。
Next, a description will be given with reference to the embodiment diagram of FIG.
Since the cable-stayed bridge 30 shown in the figure corresponds to the cable-stayed bridge 7a shown in FIG. 7, the corresponding portions are denoted by the same reference numerals and the description thereof will be omitted. In FIG. 3, the central pillar 9 shown in FIG. 7 and the left and right pillars 9 and 9 of the central pillar 9 are obliquely installed on the stiffening girder 11. The right and left suspension cables 10, 10 ... Which are fixedly installed are provided with the reverse arch-shaped arc members 25, 2
5 are connected to each other, and are supported by the stanchions 9, 9, 9 together with the stiffening girders 11 via the suspension cables 10, 10.

【0018】尚、図中符号Ha は脚柱9の高さを示す。
本発明の一実施例は上述せる如き構成に係るから、逆ア
ーチ状弧部材25は脚柱22から斜設されている吊ケー
ブル23,23…を介して脚柱22に支持される。但
し、図2の実施例では片側は橋台21に支持されてい
る。而して、該逆アーチ状弧部材25は下方部のアーチ
部材25aの両端部に所定間隔を有して柱部材27,2
7…が立設されており、且つ、該柱部材27,27…を
介して前記上載部材29を支持しているので、該逆アー
チ状弧部材25に負荷せられる応力は各柱部材27,2
7…毎に分散されることになり、依って、該逆アーチ状
弧部材25は従来と同一張力を有する吊ケーブル23,
23…を用いて該脚柱22に支持されることが可能とな
る。
The symbol H a in the figure indicates the height of the pedestal 9.
Since one embodiment of the present invention has the above-described configuration, the reverse arch-shaped arc member 25 is supported by the pedestal 22 via the suspension cables 23, 23 ... However, in the embodiment of FIG. 2, one side is supported by the abutment 21. Thus, the reverse arch-shaped arc member 25 has pillar members 27, 2 with a predetermined interval at both ends of the lower arch member 25a.
7 are erected and support the above-mentioned mounting member 29 through the column members 27, 27, so that the stress applied to the reverse arch-shaped arc member 25 is reduced by the respective column members 27, 27. Two
7, the reverse arch-shaped arc member 25 has the same tension as that of the conventional suspension cable 23,
23, it is possible to be supported by the pedestal 22.

【0019】斯くして、図1の実施例は、図6の従来例
と同一高さの脚柱22を該従来例と同じく2本立設して
構築した例であるが、補剛桁24の中央部に配設されて
いる逆アーチ状弧部材25の長さ分だけ中央径間Lが長
くなり、依って左右の側径間L1 1 を加えた全体の径
間が図6の従来例に比し、長く形成されている。又、図
2に示す実施例は、中央径間Lが図6の中央径間Lと右
方の側径間L1とを加えた長さと等しく形成され、そし
て、左方の側径間L1 を加えた長さは図6の径間と略等
しく形成されるにも拘わらず構築費の高い脚柱22を一
本減じられている。又、図3の実施例では脚柱9は図7
の従来例と同じく3本用いているが、該脚柱9の高さH
a を従来の脚柱の高さHに比し、小さく形成されること
が可能となり、且つ、吊ケーブル10の本数も減じるこ
とが可能となる。
Thus, the embodiment shown in FIG. 1 is an example in which two pedestals 22 having the same height as the conventional example shown in FIG. The center span L is lengthened by the length of the reverse arch-shaped arc member 25 disposed in the center portion, so that the total span including the left and right side spans L 1 L 1 is the conventional span shown in FIG. It is formed longer than the example. In the embodiment shown in FIG. 2, the center span L is formed to be equal to the length of the center span L of FIG. 6 and the right side span L 1 , and the left side span L is Although the length obtained by adding 1 is approximately equal to the span in FIG. 6, one pedestal 22 which is expensive to construct is reduced. In the embodiment of FIG. 3, the pedestal 9 is shown in FIG.
The same as the conventional example 3 is used, but the height H of the pedestal 9 is
a the comparison to the height H of the conventional pedestal, it is possible to be formed small, and it becomes possible to reduce also the number of suspended cable 10.

【0020】尚、本発明は、本発明の精神を逸脱しない
限り種々の改変を為すことができ、そして、本発明が該
改変されたものに及ぶことは当然である。
The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention extends to such modifications.

【0021】[0021]

【発明の効果】本発明は例えば斜張橋について実施した
ときは、該斜張橋の吊ケーブルを介して逆アーチ状弧部
材を脚柱に支持されることができ、そして、逆アーチ状
弧部材に負荷される応力は各柱部材毎に分散するので、
該ケーブルを逆アーチ状弧部材の上載部材の所々に固設
する必要がなく、従前の同一張力を有する吊ケーブルを
用いることが可能となる。而も、脚柱の高さを高くする
ことなく、径間距離を長く形成することが可能となり、
更に、従前と略同一径間距離の場合は脚柱の高さを低く
することもでき、更に、該脚柱の数或いは吊ケーブルの
本数を減じることも可能となる。
When the present invention is applied to a cable-stayed bridge, for example, the reverse arch-shaped arc member can be supported on the pedestal via the suspension cable of the cable-stayed bridge, and the reverse arch-shaped arc is supported. Since the stress applied to the member is dispersed for each pillar member,
It is not necessary to fix the cable to the upper member of the reverse arch-shaped arc member, and it is possible to use a suspension cable having the same tension as before. Moreover, it is possible to form a long span distance without increasing the height of the pedestal,
Further, in the case where the distance between the columns is substantially the same as before, the height of the pedestal can be reduced, and further, the number of the pedestal or the number of suspension cables can be reduced.

【0022】更に、補剛桁より下方へ逆アーチ状弧部材
が配設されるため、従来の形状に比し変化に富んだ斜張
橋を形成することもできるばかりか、使用材料が少なく
コストダウンにも寄与する等、正に諸種の著大なる効果
を奏する発明である。
Furthermore, since the reverse arch-shaped arc member is arranged below the stiffening girder, not only can a cable-stayed bridge which is more varied than the conventional shape can be formed, but also the material used is small and the cost is low. It is an invention that has various remarkable effects such as contributing to down.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例を斜張橋に実施した場合の側面
図。
FIG. 1 is a side view when an embodiment of the present invention is applied to a cable-stayed bridge.

【図2】他の実施例を示す斜張橋の側面図。FIG. 2 is a side view of a cable-stayed bridge showing another embodiment.

【図3】更に他の実施例を示す斜張橋の側面図。FIG. 3 is a side view of a cable-stayed bridge showing still another embodiment.

【図4】図1のA−A線断面図。4 is a cross-sectional view taken along the line AA of FIG.

【図5】従来の吊橋の側面図。FIG. 5 is a side view of a conventional suspension bridge.

【図6】従来の斜張橋の側面図。FIG. 6 is a side view of a conventional cable-stayed bridge.

【図7】従来の他の斜張橋の側面図。FIG. 7 is a side view of another conventional cable-stayed bridge.

【符号の説明】[Explanation of symbols]

9,22 脚柱 10,23 吊ケーブル 11,24 補剛桁 20,20a,30 斜張橋 21 橋台 25 逆アーチ状弧部材 27 柱部材 29 上載部材 9,22 Pillar 10,23 Suspension cable 11,24 Stiffening girder 20,20a, 30 Cable-stayed bridge 21 Abutment 25 Reverse arch-shaped arc member 27 Column member 29 Overlay member

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 上端を脚柱に固設したケーブルの下端部
を補剛桁に固設して該補剛桁を支持するようにした斜張
構造に於て、該補剛桁に、該補剛桁の下方に位置するよ
うに配設せられる逆アーチ状弧部材を連設し、且つ、該
逆アーチ状弧部材も前記ケーブルにより前記脚柱に支持
せしめるようにしたことを特徴とする逆アーチ状弧部材
及び斜張構造を用いた梁構築装置。
1. A cable-stayed structure in which a lower end portion of a cable having an upper end fixed to a pedestal is fixed to a stiffening girder so as to support the stiffening girder, A reverse arch-shaped arc member arranged so as to be located below the stiffening girder is continuously provided, and the reverse arch-shaped arc member is also supported on the pedestal by the cable. Beam construction device using reverse arched arc member and cable-stayed structure.
【請求項2】 上記逆アーチ状弧部材は、PC鋼材等の
補強材を埋設したコンクリート製アーチ部材と、該アー
チ部材上に所定間隔毎に立設された柱部材及び該柱部材
の上方部に配設される上載部材とから成ることを特徴と
する請求項1記載の梁構築装置に用いられる逆アーチ状
弧部材。
2. The reverse arch-shaped arc member comprises a concrete arch member in which a reinforcing material such as PC steel is embedded, a column member standing on the arch member at predetermined intervals, and an upper portion of the column member. The reverse arch-shaped arc member for use in the beam construction device according to claim 1, wherein the reverse arch-shaped arc member comprises a mounting member disposed on the.
JP24354392A 1992-09-11 1992-09-11 Beam structure by use of inverted arched member and slantingly extended structure and arched member thereof Pending JPH0693603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24354392A JPH0693603A (en) 1992-09-11 1992-09-11 Beam structure by use of inverted arched member and slantingly extended structure and arched member thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24354392A JPH0693603A (en) 1992-09-11 1992-09-11 Beam structure by use of inverted arched member and slantingly extended structure and arched member thereof

Publications (1)

Publication Number Publication Date
JPH0693603A true JPH0693603A (en) 1994-04-05

Family

ID=17105446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24354392A Pending JPH0693603A (en) 1992-09-11 1992-09-11 Beam structure by use of inverted arched member and slantingly extended structure and arched member thereof

Country Status (1)

Country Link
JP (1) JPH0693603A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002146719A (en) * 2000-11-14 2002-05-22 Chiyoda Engineering Consultants Co Ltd Continuous concrete arch construction for viaduct
KR100803077B1 (en) * 2007-11-20 2008-02-18 (주)신흥이앤지 Suspension bridge girder construction method
KR100840409B1 (en) * 2007-09-11 2008-06-23 현대엔지니어링 주식회사 A bridge with double eccentric depend on stay cables
KR101678503B1 (en) * 2016-09-22 2016-12-06 (주)신흥이앤지 Suspension type bridge comprised by metal pipes
CN112878172A (en) * 2021-01-11 2021-06-01 中交公路规划设计院有限公司 Half-through type continuous arch bridge structure system without suspender, tie bar and thrust

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002146719A (en) * 2000-11-14 2002-05-22 Chiyoda Engineering Consultants Co Ltd Continuous concrete arch construction for viaduct
KR100840409B1 (en) * 2007-09-11 2008-06-23 현대엔지니어링 주식회사 A bridge with double eccentric depend on stay cables
KR100803077B1 (en) * 2007-11-20 2008-02-18 (주)신흥이앤지 Suspension bridge girder construction method
KR101678503B1 (en) * 2016-09-22 2016-12-06 (주)신흥이앤지 Suspension type bridge comprised by metal pipes
CN112878172A (en) * 2021-01-11 2021-06-01 中交公路规划设计院有限公司 Half-through type continuous arch bridge structure system without suspender, tie bar and thrust

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