JP3773652B2 - Girder connection method for suspended structures - Google Patents

Girder connection method for suspended structures Download PDF

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Publication number
JP3773652B2
JP3773652B2 JP13659198A JP13659198A JP3773652B2 JP 3773652 B2 JP3773652 B2 JP 3773652B2 JP 13659198 A JP13659198 A JP 13659198A JP 13659198 A JP13659198 A JP 13659198A JP 3773652 B2 JP3773652 B2 JP 3773652B2
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Japan
Prior art keywords
girder
connecting plate
vertical
horizontal
girders
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JP13659198A
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Japanese (ja)
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JPH11323839A (en
Inventor
俊男 原口
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Kobelco Wire Co Ltd
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Shinko Wire Co Ltd
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Priority to JP13659198A priority Critical patent/JP3773652B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、吊り橋や吊り屋根の如きケーブルを支持用構造部材として用いてなる吊構造物において、吊り支持された桁を部材点数の減少及び製作費の軽減を図って高耐荷重的に連結することが可能な桁連結方法に関する。
【0002】
【従来の技術】
吊構造物の典型的な例である吊り橋が図1に示される。この吊り橋は周知の如く、橋台で実現される基台1上にそれぞれ立設させた一対の主塔2の頂部間に左右一対の主ケーブル3をそれぞれ亘らせ、その両端部をアンカレッジ5にそれぞれ固定して、前記主塔2の下部間に水平に配設した桁4を左右一対の前記主ケーブル3から吊り下げた吊りケーブル6により吊り支持してなる構造であり、上部構造物を主ケーブル3で補強することにより、多数の橋脚が減少され、しかも、設計荷重を主ケーブル3が分担することから、桁4の横断面形状を小さくできる。このために、集中荷重7を主ケーブル3の任意変形によって分散緩和して支持することができる特徴を備えている。
【0003】
【発明が解決しようとする課題】
上記のような吊り橋において、吊りケーブル6により吊り支持した桁4は、H形鋼からなる縦桁8及び横桁9により形成されるものが一般的であって、橋長が長い場合には、規定長さの複数本の縦桁8を連接することによって、連続した一本の縦桁と成し、更にこの左右の縦桁間に横桁9を所定間隔毎に亘らせ掛け渡して、上部構造物の要素部材である桁4が形成される。
【0004】
連接により一本に形成した桁4は、突き合わせた縦桁8,8の継ぎ目11部分における耐荷重性など機械的強度を十分保持させるために、通常は、連結金具を用いて強固に連結するようにしている。図4に従来の桁継ぎ目部の態様が側面図(イ)及び正面図(ロ)で示されるが、この連結金具は1個所の継ぎ目11に対して、2枚の脚部連結板13、1枚の底辺部連結板17、2枚の底辺部連結板18、1枚の頂辺部連結板19、2枚の頂辺部連結板20の、都合8枚の連結板からなっていて、各連結板を突き合わせた縦桁8,8間に亘らせて添接し、ボルト締めによって締結することによって連結一体化させている。
【0005】
上記連結金具の具体的な使用例を挙げると、縦桁8が幅100mm、高さ100mmのH形鋼、横桁9が幅125mm、高さ125mmのH形鋼であるとした場合、脚部連結板13には、長さ240mm、厚さ9mm、幅60mmの鋼板が用いられ、底辺部連結板17及び頂辺部連結板19には、長さ240mm、厚さ9mm、幅100mmの鋼板が用いられ、底辺部連結板18及び頂辺部連結板20には、長さ240mm、厚さ9mm、幅40mmの鋼板が用いられ、一方、ボルト15は、ねじ径16mmのものが20本用いられる。
【0006】
このような従来の連結方式のものでは、縦桁8の頂辺部9C の上面から上方に、頂辺部連結板19の厚み相当分とボルト15の頭部(又はナット16)厚み相当分の合計長が突出するため、縦桁8とその直上に敷設する床板10(例えば木材板)との間に、前記合計長の隙間を確保させる必要上から懐部22を持つカバー材21(例えば100mm×100mmの角木材からなる)が介設された構造となっている。
【0007】
上記カバー材21は、縦桁8の頂辺部9C 上に略全長に亘って添設されていて、縦桁8及び床板10にボルト、スクリュー釘により取付けられるため、材料費及び取付工事費が発生することから、この連結方式は吊構造物のコストを増大させる経済上の不利を免れ得なかった。
【0008】
本発明は、このような問題点を解消するべく成されたものであり、本発明の目的は、部材点数の減少による工数及び製作費の軽減を図るとともに、高耐荷重性を維持することが可能な吊構造物の桁連結方法を提供することである。
【0009】
【課題を解決するための手段】
本発明は、上記の目的を達成するため以下に述べる構成としたものである。即ち、本発明における請求項1の発明は、主塔2間に亘らせて基台5に固定した主ケーブル3から吊り下げた吊りケーブル6によりH形鋼からなる縦桁8及び横桁9により形成される桁4を吊り支持してなる吊構造物において、突き合わせた縦桁8,8の継ぎ目11の直下部に横桁9を配設する一方、継ぎ目11を挟み両側の縦桁8,8端部における底辺部8A ,8A の下面間に亘らせて底辺部連結板12を添接させ、また、脚部8B ,8B の両側面間に亘らせて脚部連結板13をそれぞれ添接させて、縦桁8と前記各連結板12,13とをボルト締めによりそれぞれ締結するとともに、縦桁8端部の底辺部8A ,8A と前記横桁9の頂辺部9C とその間に介挿された前記底辺部連結板12とをボルト締めにより締結することにより、突き合わせた縦桁8,8を連結一体化させることを特徴とする吊構造物の桁連結方法である。
【0010】
また、本発明における請求項2の発明は、前項に記載の請求項1の発明に関して、左右両側の縦桁8,8が該桁長手方向に直交差する方向の横一線に各継ぎ目11を位置付けして設けられ、左右両側の縦桁8,8間に亘らせる横桁9が横一線に位置する左右の継ぎ目11,11の直下部間に横断的に設けられることを特徴とする。
【0011】
このような本発明によれば、突き合わせた縦桁8,8の継ぎ目11部分が、その直下部に配設した剛構造物の横桁9によって支承されていることと、また、この横桁9と継ぎ目11を挟み両側の縦桁8,8端部とその間に介挿された底辺部連結板12とをボルト締めにより一括締結して連結一体化したこととによって、静荷重としての上部構造物重量並びに活荷重としての集中荷重7に対する継ぎ目11部分の力学的な補強は十分かつ万全なものとなり、これによって従来は不可欠な補強部材とされていた頂辺部連結板19,20及びその締結用のボルト15を省略することが可能となる。また、これらの補強部材が省かれることによってカバー材21も不要となり、かくして、構造部材の点数の減少及び製作費の軽減が果たされる。
【0012】
【発明の実施の形態】
以下、本発明の好ましい実施形態を、添付図面を参照しながら具体的に説明する。図2には、図1に示される前記吊り橋に好適に使用される本発明方法の実施の形態に係る桁継ぎ目部が分離斜視図で表される。また、図3には、図2図示の桁継ぎ目部が(イ)に側面図で、(ロ)に正面図でそれぞれ表される。
【0013】
図2,3に示される本発明方法の実施形態は、図4に示される従来例と同じように、吊構造物の一例の吊り橋において桁4の構造部材である縦桁8,8の継ぎ目11を補強するための連結方法に関するものであって、この場合に使用される連結用構造部材は、1個所の継ぎ目11に対して、1枚の底辺部連結板12、2枚の脚部連結板13、2枚の底辺部連結板18及び所要本数のボルト15の各要素部材からなっている。それら各要素部材は従来例のものに対して、底辺部連結板12が底辺部連結板17に対応する部材であり、また、脚部連結板13、底辺部連結板18及びボルト15が何れも同一部材である。
【0014】
次いで、上記連結用構造部材を用いて本発明方法の実施の形態に係る突き合わされた縦桁8,8相互を連結する方法について説明する。突き合わされている縦桁8,8の継ぎ目11を挟み両側の脚部8B ,8B の両側面に亘らせて脚部連結板13をそれぞれ添接させて、脚部連結板13と脚部8B ,8B とに穿設されているボルト孔14が合心した状態で4つの各ボルト孔14にボルト15を挿通し、ナット16とでねじ締めすることにより、脚部連結板13,13と縦桁8,8の脚部8B ,8B とを緊締結する。
【0015】
続いて、継ぎ目11を挟み両側の底辺部8A ,8A の下面間に亘らせて底辺部連結板12を添接させ、同じく上面間に亘らせて2枚の底辺部連結板18,18をそれぞれ添接させて、底辺部連結板12,18と底辺部8A ,8A とに穿設されている各ボルト孔14が合心した状態で継ぎ目11に遠い内方に位置する各2個のボルト孔14にボルト15を挿通し、ナット16とで仮ねじ締めして底辺部連結板12と底辺部連結板18,18とを仮り締結する。この状態で、継ぎ目11の直下部に横桁9を配設し、仮り締結されている底辺部連結板12に横桁9の頂辺部9C を添接させて、底辺部連結板12,18と頂辺部9C とに穿設されている4個のボルト孔14を合心させて各ボルト孔14にボルト15を挿通し、ナット16とでねじ締めして緊締結する。これと相前後して前述の仮り締結した個所もねじ締めして緊締結する。
【0016】
かくして、継ぎ目11を挟み両側の底辺部8A ,8A と、横桁9の頂辺部9C と、底辺部連結板12と底辺部連結板18,18とが合着し、かつ、ボルト締めにより緊締結することになり、突き合わせた縦桁8,8は強固に連結し一体化される。このようにして一体化された後に、縦桁8,8の頂辺部8C 上に床板10を直接搭載して固定することにより、吊り橋の床基礎部が形成される。
【0017】
以上述べた縦桁8,8相互の連結は、1個所について説明したものであるが、左右両側の縦桁8,8における各継ぎ目11を桁長手方向に直交差する方向の横一線に揃うように位置付けさせて左縦桁8及び右縦桁8を敷設し、一方、横一線に揃って位置付けられた左右の継ぎ目11,11の直下部間に横桁9を横断的に亘らせて敷設するようにすれば、桁4の形態が左右対称形となって纏まりが良いし、横桁9を継ぎ目11部補強のためとして有効に活用できるので好ましいことである。
【0018】
【実施例】
以下、本発明の実施例について図2および図3を参照しながら説明する。前記連結用構造部材の具体的な使用例を挙げると、縦桁8が幅100mm、高さ100mmのH形鋼、横桁9が幅125mm、高さ125mmのH形鋼であるとした場合、脚部連結板13には、長さ240mm、厚さ9mm、幅60mmの鋼板が用いられ、底辺部連結板12には、長さ240mm、厚さ9mm、幅100mmの鋼板が用いられ、底辺部連結板18には、長さ240mm、厚さ9mm、幅40mmの鋼板が用いられ、一方、ボルト15は、ねじ径16mmのものが12本用いられる。この実施例と図4に示される従来例の連結用構造部材とを比較すると、本発明の実施例の場合は、1個所の継ぎ目11に対して長さ240mm、厚さ9mm、幅100mmの鋼板からなる1枚の頂辺部連結板19と、長さ240mm、厚さ9mm、幅40mmの鋼板からなる2枚の頂辺部連結板20と、8本のボルト15とが省略され、また、左右両縦桁8それぞれについて100mm×100mmの角木材からなる長尺のカバー材21が省略されることになる。その結果、工数及び工期が低減されるし、吊り橋の製作費が軽減される。
【0019】
【発明の効果】
本発明は、以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【0020】
即ち、本発明によれば、突き合わせた縦桁の継ぎ目の直下部に横桁を配設し、継ぎ目を挟み両側の縦桁端部における底辺部の下面間に亘らせて底辺部連結板を添接させ、また、脚部の両側面間に亘らせて脚部連結板をそれぞれ添接させて、縦桁と前記各連結板とをボルト締めによりそれぞれ締結するとともに、縦桁端部の底辺部と前記横桁の頂辺部とその間に介挿された前記底辺部連結板とをボルト締めにより締結して、突き合わせた縦桁を連結一体化させるようにしたから、従来必要とされていた頂辺部連結板19,20及びその締結に用いられたボルト15が省けるので、これに併せて不可欠であったカバー材21も必要でなくなり、部材点数の減少による工数及び製作費の低減並びに吊り荷重の軽減が図れる。
【図面の簡単な説明】
【図1】吊り橋の立面図である。
【図2】本発明方法の実施の形態に係る吊構造物の桁継ぎ目部の分離斜視図である。
【図3】(イ)は図2に対応する桁継ぎ目部の側面図、(ロ)は同じく正面図である。
【図4】(イ)は従来の桁継ぎ目部の側面図、(ロ)は同じく正面図である。
【符号の説明】
1…基台 2…主塔 3…主ケーブル 4…桁
5…アンカレッジ 6…吊りケーブル 7…集中荷重 8…縦桁
8A …底辺部 8B …脚部 8C …頂辺部 9…横桁
9A …底辺部 9B …脚部 9C …頂辺部 10…床板
11…継ぎ目 12…底辺部連結板 13…脚部連結板
14…ボルト孔 15…ボルト 16…ナット
17…底辺部連結板 18…底辺部連結板 19…頂辺部連結板
20…頂辺部連結板 21…カバー材 22…懐部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspension structure using a cable such as a suspension bridge or a suspension roof as a structural member for support, and the suspension supported girder is connected with high load resistance by reducing the number of members and reducing the manufacturing cost. It relates to a method for connecting digits.
[0002]
[Prior art]
A suspension bridge, which is a typical example of a suspended structure, is shown in FIG. As is well known, this suspension bridge has a pair of left and right main cables 3 spanned between the tops of a pair of main towers 2 erected on a base 1 realized by an abutment, and both ends thereof are anchorage 5. The girders 4 that are horizontally disposed between the lower portions of the main tower 2 are suspended and supported by suspension cables 6 suspended from a pair of left and right main cables 3, and the upper structure is By reinforcing with the main cable 3, the number of piers is reduced, and the main cable 3 shares the design load, so that the cross-sectional shape of the girder 4 can be reduced. For this reason, the concentrated load 7 can be supported by being dispersed and relaxed by arbitrary deformation of the main cable 3.
[0003]
[Problems to be solved by the invention]
In the suspension bridge as described above, the girder 4 suspended and supported by the suspension cable 6 is generally formed by a vertical girder 8 and a horizontal girder 9 made of H-shaped steel, and when the bridge length is long, By connecting a plurality of stringers 8 of a specified length, a continuous string is formed, and a horizontal string 9 is spanned between the left and right columns at predetermined intervals. Girder 4 which is an element member of the superstructure is formed.
[0004]
In order to maintain sufficient mechanical strength such as load resistance at the joint 11 portion of the joined vertical girders 8 and 8, the girders 4 formed as a single piece by connection are usually connected firmly using a connecting metal fitting. I have to. FIG. 4 is a side view (a) and a front view (b) showing a mode of a conventional girder joint. This connection fitting is composed of two leg connection plates 13, 1 with respect to one joint 11. Each of the bottom side connecting plate 17, the two bottom side connecting plates 18, the top side connecting plate 19, and the two top side connecting plates 20. The connecting plates are joined to each other between the longitudinal beams 8 and 8 and are connected and integrated by fastening them with bolts.
[0005]
Specific examples of the use of the above-mentioned connecting brackets are as follows. When the stringer 8 is an H-section steel having a width of 100 mm and a height of 100 mm, and the crossbeam 9 is an H-section steel having a width of 125 mm and a height of 125 mm, The connecting plate 13 is a steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 60 mm. The bottom side connecting plate 17 and the top side connecting plate 19 are a steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 100 mm. A steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 40 mm is used for the bottom side connecting plate 18 and the top side connecting plate 20, while 20 bolts with a screw diameter of 16 mm are used. .
[0006]
In such a conventional connection system, the portion corresponding to the thickness of the top side connecting plate 19 and the thickness corresponding to the thickness of the head (or nut 16) of the bolt 15 are provided upward from the upper surface of the top side portion 9C of the stringer 8. Since the total length protrudes, a cover member 21 (for example, 100 mm) having a pocket portion 22 is necessary in order to ensure a gap of the total length between the stringer 8 and a floor board 10 (for example, a wood board) laid directly thereon. X100 mm square wood).
[0007]
The cover material 21 is provided over the top side 9C of the stringer 8 over substantially the entire length, and is attached to the stringer 8 and the floor board 10 with bolts and screw nails. Because of this, this connection scheme has not been able to escape the economic disadvantage of increasing the cost of suspended structures.
[0008]
The present invention has been made to solve such problems, and the object of the present invention is to reduce man-hours and production costs by reducing the number of members and to maintain high load resistance. It is to provide a girder connection method for a possible suspended structure.
[0009]
[Means for Solving the Problems]
The present invention has the following configuration in order to achieve the above object. That is, the invention of claim 1 of the present invention is a vertical girder 8 and a horizontal girder 9 made of H-shaped steel by a suspension cable 6 suspended from a main cable 3 fixed to a base 5 between main towers 2. In the suspended structure formed by suspending and supporting the girder 4, the horizontal girder 9 is disposed immediately below the seam 11 of the butted vertical girder 8 and 8, while the vertical girder 8 on both sides sandwiching the seam 11. The bottom side connecting plate 12 is attached between the bottom surfaces of the bottom side portions 8A and 8A at the eight end portions, and the leg connecting plate 13 is set between both side surfaces of the leg portions 8B and 8B. At the same time, the stringer 8 and the connecting plates 12 and 13 are fastened by bolting, and the bottom side parts 8A and 8A of the end part of the stringer 8 and the top part 9C of the transverse beam 9 and between them By tightening the inserted bottom side connecting plate 12 by bolting, butting On the order consolidation method hanging structure, characterized in that linking integrated girder 8,8.
[0010]
Further, the invention of claim 2 in the present invention relates to the invention of claim 1 of the previous invention, wherein each seam 11 is positioned on a horizontal line in a direction in which the left and right vertical beams 8, 8 are orthogonal to the longitudinal direction of the beam. The cross beam 9 between the left and right vertical beams 8 is provided transversely between the right and left seams 11 and 11 located in a horizontal line.
[0011]
According to the present invention as described above, the seam 11 portion of the abutted stringers 8 and 8 is supported by the crossbeam 9 of a rigid structure disposed immediately below the seam 11, and the crossbeam 9 The upper structure as a static load is obtained by connecting together and integrally connecting the ends of the vertical girders 8 and 8 on both sides of the seam 11 and the bottom connection plate 12 interposed therebetween by bolt fastening. The mechanical reinforcement of the joint 11 with respect to the concentrated load 7 as a weight and a live load is sufficient and complete, and thus, the top side connecting plates 19 and 20 that have been regarded as indispensable reinforcing members in the past and the fastening thereof. The bolt 15 can be omitted. Further, since these reinforcing members are omitted, the cover material 21 is not required, and thus the number of structural members is reduced and the manufacturing cost is reduced.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is an exploded perspective view showing a girder joint according to an embodiment of the method of the present invention suitably used for the suspension bridge shown in FIG. Also, in FIG. 3, the girder joints shown in FIG. 2 are represented by (a) in a side view and (b) in a front view.
[0013]
The embodiment of the method of the present invention shown in FIGS. 2 and 3 is similar to the conventional example shown in FIG. 4 in the joint 11 of the vertical beams 8 and 8 that are structural members of the beam 4 in the suspension bridge as an example of the suspension structure. The connecting structural member used in this case is one base connecting plate 12 and two leg connecting plates for one joint 11. 13, and two bottom side connecting plates 18 and a required number of bolts 15. Each of these element members is a member in which the base connecting plate 12 corresponds to the base connecting plate 17 with respect to the conventional example, and the leg connecting plate 13, the base connecting plate 18 and the bolt 15 are all included. It is the same member.
[0014]
Next, a method of connecting the butted stringers 8 and 8 according to the embodiment of the method of the present invention using the connecting structural member will be described. The leg connecting plate 13 and the leg 8B are respectively attached to the leg portions 8B and 8B on both sides of the seam 11 of the stringers 8 and 8 that are abutted with each other, and the leg connecting plates 13 are attached to both sides. , 8B are inserted into the four bolt holes 14 in a state where the bolt holes 14 are aligned with each other, and are fastened with the nuts 16 so that the leg connecting plates 13 and 13 are vertically connected. Fasten the legs 8B and 8B of the girders 8 and 8 tightly.
[0015]
Subsequently, the bottom portion connecting plate 12 is pressed between the bottom surfaces 8A and 8A on both sides with the joint 11 interposed therebetween, and the two bottom portion connecting plates 18 and 18 are also connected between the top surfaces. Are connected to each other so that two bolt holes 14 formed in the bottom side connecting plates 12 and 18 and the bottom side parts 8A and 8A are concentric with each other. Bolts 15 are inserted into the bolt holes 14 and temporarily screwed with the nuts 16 to temporarily fasten the bottom connection plates 12 and the bottom connection plates 18 and 18. In this state, the cross beam 9 is disposed immediately below the joint line 11, the top side portion 9C of the cross beam 9 is attached to the temporarily connected bottom side connection plate 12, and the bottom side connection plates 12, 18. The four bolt holes 14 drilled in the top side portion 9C are aligned, the bolts 15 are inserted into the respective bolt holes 14, and are tightened with the nuts 16 to be tightened. At the same time, the above-mentioned temporarily tightened part is also screwed and tightened.
[0016]
Thus, the bottom portions 8A and 8A on both sides of the seam 11, the top portion 9C of the cross beam 9, the bottom connection plate 12 and the bottom connection plates 18 and 18 are joined together and tightened by bolting. As a result of the fastening, the butted stringers 8 and 8 are firmly connected and integrated. After being integrated in this manner, the floor base 10 of the suspension bridge is formed by directly mounting and fixing the floor board 10 on the top side 8C of the stringers 8 and 8.
[0017]
The connection between the vertical beams 8 and 8 described above has been described with respect to one place, but the seams 11 of the vertical beams 8 and 8 on the left and right sides are aligned in a horizontal line in a direction orthogonal to the longitudinal direction of the beam. The left vertical girder 8 and the right vertical girder 8 are laid, and the horizontal girder 9 is laid across the right and left seams 11, 11 positioned in line with the horizontal line. By doing so, it is preferable because the form of the girders 4 is bilaterally symmetric so that they can be bundled together and the horizontal girders 9 can be effectively used for reinforcing the seam 11 part.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to FIGS. Specific examples of use of the connecting structural member are as follows. When the stringer 8 is an H-section steel having a width of 100 mm and a height of 100 mm, and the crossbeam 9 is an H-section steel having a width of 125 mm and a height of 125 mm, A steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 60 mm is used for the leg connecting plate 13, and a steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 100 mm is used for the bottom side connecting plate 12. The connecting plate 18 is made of a steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 40 mm, while the bolt 15 is made of 12 screws having a screw diameter of 16 mm. When this embodiment is compared with the connecting structural member of the conventional example shown in FIG. 4, in the case of the embodiment of the present invention, a steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 100 mm with respect to one joint 11. The top side connecting plate 19 made of, the two top side connecting plates 20 made of a steel plate having a length of 240 mm, a thickness of 9 mm, and a width of 40 mm, and the eight bolts 15 are omitted. The long cover material 21 made of 100 mm × 100 mm square wood is omitted for each of the left and right vertical girders 8. As a result, the man-hours and the work period are reduced, and the production cost of the suspension bridge is reduced.
[0019]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0020]
In other words, according to the present invention, a horizontal girder is disposed immediately below the seam of the abutted vertical girder, and the bottom side connecting plate is sandwiched between the bottom surfaces of the bottom side parts at the ends of the vertical girder on both sides across the seam. In addition, the leg connecting plate is attached between both side surfaces of the leg, and the stringer and each connecting plate are fastened by bolting, and the end of the stringer Since the bottom part, the top part of the horizontal girder, and the bottom part connecting plate inserted between the bottom girder are fastened by bolting, the butted vertical girder is connected and integrated, which is conventionally required. Since the top side connecting plates 19 and 20 and the bolts 15 used for fastening thereof can be omitted, the cover material 21 that is indispensable to this is no longer necessary, and the man-hours and production costs can be reduced by reducing the number of members. The suspension load can be reduced.
[Brief description of the drawings]
FIG. 1 is an elevational view of a suspension bridge.
FIG. 2 is an exploded perspective view of a beam joint portion of a suspended structure according to an embodiment of the method of the present invention.
3A is a side view of a girder joint corresponding to FIG. 2, and FIG. 3B is a front view of the same.
4A is a side view of a conventional girder joint, and FIG. 4B is a front view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Main tower 3 ... Main cable 4 ... Girder 5 ... Anchorage 6 ... Hanging cable 7 ... Concentrated load 8 ... Vertical girder 8A ... Bottom part 8B ... Leg part 8C ... Top part 9 ... Cross girder 9A ... Bottom part 9B ... Leg part 9C ... Top part 10 ... Floor board 11 ... Joint 12 ... Bottom part connecting plate 13 ... Leg part connecting plate 14 ... Bolt hole 15 ... Bolt 16 ... Nut 17 ... Bottom part connecting plate 18 ... Bottom part connecting Plate 19: Top side connecting plate 20 ... Top side connecting plate 21 ... Cover material 22 ... Pocket

Claims (2)

主塔間に亘らせて基台に固定した主ケーブルから吊り下げた吊りケーブルによりH形鋼からなる縦桁及び横桁により形成される桁を吊り支持してなる吊構造物において、突き合わせた縦桁の継ぎ目の直下部に横桁を配設する一方、継ぎ目を挟み両側の縦桁端部における底辺部の下面間に亘らせて底辺部連結板を添接させ、また、脚部の両側面間に亘らせて脚部連結板をそれぞれ添接させて、縦桁と前記各連結板とをボルト締めによりそれぞれ締結するとともに、縦桁端部の底辺部と前記横桁の頂辺部とその間に介挿された前記底辺部連結板とをボルト締めにより締結することにより、突き合わせた縦桁を連結一体化させることを特徴とする吊構造物の桁連結方法。In a suspended structure in which a girder formed by vertical and horizontal girders made of H-shaped steel is supported by a hanging cable suspended from a main cable fixed to a base across the main towers. A horizontal girder is arranged immediately below the seam of the vertical girder, while a bottom connecting plate is attached between the bottom surfaces of the bottom girder at both ends of the vertical girder on both sides of the seam. A leg connecting plate is attached between both side surfaces, and the stringer and each connecting plate are fastened by bolting, respectively, and the bottom side of the end of the stringer and the top side of the horizontal beam A girder connection method for a suspended structure, wherein the butted vertical girders are coupled and integrated by fastening the parts and the bottom part connecting plate interposed therebetween by bolting. 左右両側の縦桁が該桁長手方向に直交差する方向の横一線に各継ぎ目を位置付けして設けられ、左右両側の縦桁間に亘らせる横桁が横一線に位置する左右の継ぎ目の直下部間に横断的に設けられる請求項1記載の吊構造物の桁連結方法。The left and right vertical girders are provided on the horizontal line in a direction perpendicular to the longitudinal direction of the girder, and the horizontal girder between the left and right vertical girder is located on the horizontal line. The method for connecting girders for a suspended structure according to claim 1, which is provided transversely between the lower portions.
JP13659198A 1998-05-19 1998-05-19 Girder connection method for suspended structures Expired - Fee Related JP3773652B2 (en)

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Application Number Priority Date Filing Date Title
JP13659198A JP3773652B2 (en) 1998-05-19 1998-05-19 Girder connection method for suspended structures

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JP3773652B2 true JP3773652B2 (en) 2006-05-10

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CN102248599B (en) * 2011-07-26 2013-02-13 江苏圣乐机械有限公司 Inner mould hanging system for aqueduct mould
CN107119575B (en) * 2017-06-27 2018-10-12 陈建生 A kind of bridge plate splicing clamp convenient for clamping
CN113186798B (en) * 2021-03-30 2022-05-20 中交第二航务工程局有限公司 Main cable slippage control method in non-support construction process of cable-first and beam-second suspension bridge
CN114657880A (en) * 2022-03-21 2022-06-24 浙江大学建筑设计研究院有限公司 String-tensioning and suspension cable combined type pedestrian bridge formed by space cables and construction method thereof

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