JP2000265417A - Moving timbering construction method for bridge floor slab overhang section - Google Patents
Moving timbering construction method for bridge floor slab overhang sectionInfo
- Publication number
- JP2000265417A JP2000265417A JP11066543A JP6654399A JP2000265417A JP 2000265417 A JP2000265417 A JP 2000265417A JP 11066543 A JP11066543 A JP 11066543A JP 6654399 A JP6654399 A JP 6654399A JP 2000265417 A JP2000265417 A JP 2000265417A
- Authority
- JP
- Japan
- Prior art keywords
- slab
- outer frame
- bridge
- girder
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】開示技術は、高速道路等に設ける
橋梁の桁が少主桁タイプのものである橋梁の床版コンク
リートの張出部床版工事を行うに際し、施工能率が良
く、経済的に施工が行なえるようにした支保工の技術分
野に属する。[Technical field of application] The disclosed technology has a high construction efficiency and is economical in the case of a slab of a slab of a slab of a concrete slab of a bridge in which the bridge girder provided on a highway or the like is of a small main girder type. It belongs to the technical field of shoring that can be performed in a specific way.
【０００２】[0002]
【従来の技術】周知の如く市民生活の向上に伴って、各
種産業が隆盛となり、当該各種産業の施設が一部都市近
郊のみならず、全国津々浦々に散在するようになると、
かかる産業施設間に物資、資材や人物等を輸送する交通
機関が極めて重要になり、したがって、該種産業施設間
には鉄道や道路網等がネットワーク的に敷設されるよう
になっており、これらの道路や鉄道網の敷設が今後共益
々拡充される勢いにある。2. Description of the Related Art As is well known, with the improvement of citizens' lives, various industries have prospered, and facilities of the various industries have become scattered not only in suburbs of cities but also throughout the country.
Transportation that transports goods, materials, people, etc. between such industrial facilities becomes extremely important. Therefore, railways, road networks, etc. are being laid between the industrial facilities in a network. The construction of roads and railway networks is increasing in the future.
【０００３】而して、特に、道路網にあっては期間的ス
ケジュールの自由度の低さ等の点において使用頻度が高
まり、益々その敷設拡充の度合いが広まっている。[0003] Particularly, in the road network, the frequency of use is increasing in terms of the degree of freedom of a periodical schedule and the like, and the degree of the laying of the road network is increasing.
【０００４】そして、該種道路網の敷設にあっては、特
に山間林野部にあっては、我が国特有の地勢条件にあっ
て橋梁の構築が不可欠であり、その施工能率の向上は経
済性の効果とも相俟って構造がシンプルであるような技
術が開発され、近時その桁数が在来態様の如く、４つや
５つ等から中央部の桁を取り払って少なくした所謂少主
桁橋梁がその構築の態様の大勢となる勢いにある。In laying such a kind of road network, especially in mountainous forests, bridge construction is indispensable under terrain conditions peculiar to Japan, and improvement of construction efficiency is not economical. A technology with a simple structure has been developed in conjunction with the effect, and recently the number of girders has been reduced by removing the central girder from four or five, etc., as in the conventional mode, so-called small main girder bridge Is in a momentum that will be the dominant aspect of its construction.
【０００５】したがって、当該少主桁橋梁にあっては桁
の高さが大きくなるような態様にはなる。Therefore, the small girder bridge has a mode in which the height of the girder is increased.
【０００６】而して、当然の事ながら、少主桁橋梁の金
属桁の上部にはコンクリート床版を設けねばならない
が、中央部の相対向する主桁の間に配設する主床版コン
クリートは該桁間に渡設された横桁の上に架台を設置
し、該種床版コンクリートの打設を型枠を所定スパンづ
つ移動しながら、床版を形成していく技術は近時完成に
近い域に達してはいるが、該種桁間の床版コンクリート
の両側から外方向に所定長さに延設している張出部の工
事については張出部床版施工を行う支保工の技術につい
ては主桁に対し上側のフレームから吊り下げる、所謂ハ
ンガータイプと主桁の下側のフランジに支持力を持たせ
るサポートタイプの２態様があり、図９の（イ）に示す
ハンガータイプにおいては橋梁の両方に軸方向直角に所
定スパン間隔で設けたπ型のフレーム１からワイヤーや
ロッド２を介し、受け木３を介し、張出部の底床版型枠
メタルフォーム５を支持し、その支持力はワイヤーやロ
ッド２及びπ型フレーム１を介し、軌条ガイド１１を支
持する取付け金物１２を介し、主桁７の上フランジ８に
伝達するようにされていた。As a matter of course, a concrete slab must be provided on the upper part of the metal girder of the small main girder bridge. Has recently completed the technology of installing a gantry on the horizontal girder placed between the girders and forming the floor slab while moving the formwork by a predetermined span for casting the seed slab concrete. Although it has reached the area close to the slab, the pier slab works to extend the slab to the specified length outward from both sides of the slab concrete between the seed girders. There are two types of technology, a so-called hanger type in which a main girder is suspended from an upper frame, and a support type in which a lower flange of the main girder has a supporting force, and a hanger type shown in FIG. In both of the bridges are provided at predetermined span intervals at right angles to the axial direction The bottom floor slab form metal form 5 of the overhanging portion is supported from the mold frame 1 via the wire or rod 2 and the receiving tree 3, and the supporting force is via the wire or rod 2 and the π-type frame 1. The power was transmitted to the upper flange 8 of the main girder 7 via the mounting hardware 12 supporting the rail guide 11.
【０００７】一方、当該図９（ロ）のサポートタイプの
態様としては特開平１０−１１４９１４号公報発明等が
あるが、当該先願発明においてはサポートタイプである
が故にコンクリート床版６´ の上部は開放されてオー
プンタイプにされてはいるが、外方向の張出部の底床版
型枠フレームにあってはローラ等があり、橋桁と当接摺
動する態様があり、施工後、桁７の塗装等に損傷を及ぼ
しその補修作業等がさけられないデメリットがある。On the other hand, as an embodiment of the support type shown in FIG. 9 (b), there is an invention disclosed in Japanese Patent Application Laid-Open No. Hei 10-114914. In the prior invention, which is a support type, the upper part of the concrete floor slab 6 'is used. Although it is open and open type, there are rollers etc. in the bottom floor slab form frame of the overhanging part in the outward direction, there is a form that slides in contact with the bridge girder, after construction, the girder There is a demerit that the painting etc. of 7 is damaged and repair work etc. cannot be avoided.
【０００８】又、型枠用の外フレームの偏心モーメント
による水平力を支持するために桁７の上フランジ８の面
に埋設した金物を取付けるという準備作業が必要にな
り、施工能率及び経済面における少なからぬデメリット
がある。In addition, in order to support the horizontal force due to the eccentric moment of the outer frame for the formwork, a preparatory work for mounting the metal buried on the surface of the upper flange 8 of the spar 7 is required, and in terms of construction efficiency and economy. There are considerable disadvantages.
【０００９】又、当該図９の（ロ）に示すサポートタイ
プにあっては張出部の底床版型枠のメタルフォーム５の
荷重を支保工フレーム２´ を介し、主桁７の下フラン
ジ８´ に支持させて、コンクリート打設ブロック６´
の上部を解放型にし、型枠移動用の軌条ガイド１１は桁
７の上フランジ８から取付けならなければならないとい
う構造をとっていた。In the case of the support type shown in FIG. 9B, the load of the metal form 5 of the bottom floor slab form at the overhang portion is supported by the lower flange of the main girder 7 via the support frame 2 '. 8 ′, concrete casting block 6 ′
Of the form is open, and the rail guide 11 for moving the form must be attached from the upper flange 8 of the spar 7.
【００１０】[0010]
【発明が解決しようとする課題】したがって、当該図９
（イ）のハンガータイプや（ロ）のサポートタイプにあ
っても、コンクリート打設ブロック６´ をワイヤーや
ロッド２が貫通したり、軌条ガイド１１の当該打設コン
クリートブロック６´ を貫通して主桁７の上フランジ
８を介し、支点に支持させねばならないために構造や施
工が著しく煩瑣であるという欠点があり、又、工期が長
くなり、コスト高になるという難点もあり、又、施工終
了後のワイヤーやロッド２の除去切断や、取付け金物の
撤去等にも余計な付帯工事を必要とするという不都合さ
があった。Therefore, FIG.
Regardless of the hanger type (a) or the support type (b), the wire or rod 2 penetrates the concrete placing block 6 'or the rail guide 11 penetrates the concrete placing block 6'. There is a drawback that the structure and construction are extremely complicated because the spar must be supported on the fulcrum via the upper flange 8, and the construction period is long and the cost is high. There is also a disadvantage that additional incidental work is required for later removal and cutting of the wire and rod 2 and removal of mounting hardware.
【００１１】又、工数の増大に伴い、その操作管理等が
煩瑣になり、調整等の補充工事等も採らざるを得ないと
いう不都合さがあった。Further, as the number of man-hours increases, the operation management and the like become complicated, and there is a disadvantage that replenishment work such as adjustment must be taken.
【００１２】そして、図９の（ロ）に示す様に、サポー
トタイプにあっては両則に配設する外フレームは当該支
保工フレームの所定スパンつづの移動にともなって、不
安定さが伴うものであり、当該外フレームと桁７との間
の摺動摩擦等により塗装面等の剥離や損傷等も生じかね
ないというデメリットがあった。As shown in FIG. 9 (b), in the case of the support type, the outer frame arranged in accordance with both rules is accompanied by instability due to the movement of the support frame by a predetermined span at a time. However, there is a demerit that peeling or damage of the painted surface may occur due to sliding friction between the outer frame and the spar 7 or the like.
【００１３】[0013]
【発明の目的】この出願の発明の目的は上述従来技術に
基づく少主桁橋桁の張出部床版型枠の外フレームの確実
な保持を有しながらハンガータイプのワイヤーやロッド
等の打設コンクリートを貫通する部分の除去や、又、サ
ポートタイプの上部開放型のメリットを有しはするもの
の、埋込み金物の設置除去等の施工の前後の支保工事の
煩瑣性等による施工能力の低下の問題点を有する両態様
のデメリットを解消しながら、安全性が高く、省力化が
図れ、コストダウンも向上するようにし、設計通りの高
精度で高能率に施工が出来、安全性も高く、完成した橋
梁の信頼性も高めるようにして交通産業における橋梁建
設技術利用分野に益する優れた橋梁の床版張出部用移動
支保工工法を提供せんとするものである。SUMMARY OF THE INVENTION It is an object of the present invention to drive a hanger-type wire or rod while securely retaining the outer frame of the overhanging floor slab formwork of the small main girder bridge girder based on the prior art. Despite removal of the part that penetrates concrete and the advantages of the open-top type of the support type, the problem of reduced construction capacity due to the complexity of support work before and after the work such as installation and removal of embedded hardware While eliminating the disadvantages of both aspects with points, high safety, labor saving and cost reduction are improved, construction can be performed with high precision and efficiency as designed, safety is high and completed It is an object of the present invention to provide a bridge supporting method for a bridge slab overhang which is advantageous in the field of bridge construction technology in the transportation industry by increasing the reliability of the bridge.
【００１４】[0014]
【課題を解決するための手段】上述目的に沿い先述特許
請求の範囲を要旨とするこの出願の発明の構成は、前述
課題を解決するために、少主桁橋梁の床版コンクリート
の張出部床版工事を行うに際し、床版底型枠受けフレー
ムを移動する支保工工法にあって、コンクリート床版打
設エリアの橋軸方向前後に橋軸方向に直角に大梁を渡設
し、該両大梁の両端部に大スパンのトラス材を渡設し、
該大梁と大スパンのトラス材により形成される空間をオ
ープンタイプのエリアとし、該各大スパンのトラス材か
ら床版張出部の底型枠受け用の外フレームを吊設し、該
外フレームが該外フレームの上下の横梁間に対し斜材を
介して正面視箱型に形成され、該両側の床版底型枠受け
用の外フレームの間を桁の下部空間でビーム材で連結解
放自在にしたことを基幹とし、而して少主桁橋梁の床板
コンクリートの張出部床版工事を行うに際し、床版底型
枠受け用の外フレームを橋梁の床版張出部を移動する支
保工工法において、床版打設エリアの橋軸方向前後に橋
軸方向に直角に大梁を渡設し、該両大梁の両端部に大ス
パンのトラス材を渡設し、該各大スパンのトラス材から
床版張出部の底型枠受け用の外フレームを吊設し、該両
側の床版底型枠受け用の外フレームの間を桁の下部空間
でビーム材で連結解放自在にし、而して、桁の上フラン
ジとウエブの隅角部に予め工場取付けされた足場吊りピ
ースと上記型枠受け用の外フレームの上横梁の間に介装
したつなぎ梁との間に吊り金具を介装自在にするように
し、又、該つなぎ梁と該吊り金具との間に介装したジャ
ッキサポートによっても支持自在であるようにし、而し
て、上記床版底型枠受け用の外フレームに対する桁と該
桁のウエブと上部フランジの隅角部に予め工場で設けた
吊りピースに対し吊り金具を設け該吊り金具に対し、つ
なぎ梁を介して上記外フレームの上横梁を連結し、該つ
なぎ梁にローラを枢支配設させ、ビームを取外し、橋脚
に対する干渉を避け、通過を自在にするようにし、主桁
橋梁の床板コンクリートの張出部床版工事を行うに際し
ては、床版底型枠受け用の外フレームを橋梁の床版張出
部を移動する支保工工法であって、床版打設エリアの橋
軸方向前後に橋軸方向に直角に大梁を渡設し、該両大梁
の両端部に大スパンのトラス材を渡設し、該両大梁の両
端部に各大スパンのトラス材から床版張出部の底型枠受
け用の外フレームを吊設し、該両側の床版底型枠受け用
の外フレームの間を桁の下部空間でビーム材で連結解放
自在にし、而も、上記足場吊りピースがない態様では桁
の下フランジとウエブの隅角部とつなぎ梁に伸縮自在の
パイプサポートを設置するようにもした技術的手段を講
じたものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the construction of the invention of the present application, which has the above-mentioned claims and aims at the above-mentioned objects, is to provide an overhanging portion of a concrete floor slab of a small main girder bridge. In carrying out the floor slab construction, in the support method of moving the floor slab bottom formwork frame, a girder is laid at right angles to the bridge axis direction before and after the bridge axis direction of the concrete slab placement area. Large span truss materials are installed at both ends of the girder,
The space formed by the girders and the large span truss material is an open type area, and an outer frame for receiving a bottom formwork of a floor slab overhang is suspended from the large span truss material. Is formed in a box shape with a diagonal member between the upper and lower cross beams of the outer frame through a diagonal member. The outer frames for receiving the floor slab bottom formwork on both sides are connected and released by the beam material in the space below the girder. Based on the fact that it was made freely, the outer frame for the bottom formwork of the floor slab is moved to the slab overhang of the bridge when performing the slab construction of the floor slab concrete overhang of the small girder bridge. In the shoring method, large beams are installed at right angles to the bridge axis direction before and after the bridge axis direction of the floor slab placement area, and large span truss members are installed at both ends of both large beams, and An outer frame for receiving the bottom formwork of the floor slab overhang is suspended from the truss material, and the floor form bottom form supports on both sides are suspended. In the lower space of the girder, the beam between the outer frames for connecting and releasing can be freely released, and thus the scaffold hanging pieces previously mounted on the upper flange of the girder and the corners of the web and the above-mentioned form receiving members Suspension fittings can be interposed between the connecting beams interposed between the upper horizontal beams of the outer frame, and can also be supported by jack supports interposed between the joining beams and the suspension fittings. In this manner, a girder for the outer frame for receiving the floor slab bottom formwork, and a hanging metal fitting for a hanging piece previously provided at a factory at a corner of a web and an upper flange of the girder are provided. A main girder is connected to the upper cross beam of the outer frame via a connecting beam, a roller is pivotally provided on the connecting beam, the beam is removed, interference with the pier is avoided, and the beam can pass freely. Bridge floor concrete overhang floor When carrying out the construction, the outer frame for the bottom slab of the floor slab is supported by moving the overhang of the slab of the bridge. A large span truss material is provided at both ends of the two large beams, and a large span truss material is provided at both ends of the large beams to receive the bottom formwork of the floor slab overhang from the large span truss material. An outer frame is suspended, and the outer frame for receiving the floor slab bottom form receiving on both sides is freely connected and released by a beam material in a lower space of the girder. Technical measures were taken in which telescopic pipe supports were installed on the flanges, the corners of the web and the connecting beams.
【００１５】[0015]
【作用】而して、上述構成において、コンクリート床版
の両サイドの張出部床版工事に際しては、橋軸方向所定
スパンを介して、前後に該橋軸方向に直角に大梁を渡設
し、該両大梁の端部に亘り大スパンのトラスを一対渡設
し、両大スパンのトラス材から床版張出部型枠受け外用
の外フレームを吊設し、該両側の床版の底型枠受け用の
外フレーム間には桁下の空間でビーム材を連結解放自在
にし、該両大梁とトラス材により形成される空間をオー
プンの解放型のエリア空間とし、又、少主桁のウエブと
フランジの隅角部に予め工場等で取付けた施工後の保守
修理作業用の足場吊りピースを利用し、外床版フレーム
の上部のつなぎ梁と該足場吊りピースの間に吊り金具を
介して連結支持し、又は、桁の下フランジと桁のウエブ
とつなぎ梁との間に介装したジャッキサポートによる支
持の態様であるようにもし、張出部床版の外床板フレー
ムのコンクリート荷重を受ける受梁を片持ち方式から両
端支持方式にして型枠の変形を最小化することにより、
張出部底床版型枠の外フレームの安定性を向上させ、施
工を高能率で行い、型枠の移動に際し、該ビームが鋼橋
の橋脚と干渉しないようにする。In the above construction, when constructing the overhanging slab on both sides of the concrete slab, a girder is laid forward and backward at right angles to the bridge axis direction through a predetermined span in the bridge axis direction. A pair of large-span trusses is provided across the ends of the two girders, and an outer frame for the outside of the slab overhanging formwork is hung from the truss members of the two large spans, The beam material is connected and released between the outer frames for form receiving in the space below the girder, and the space formed by the two girders and the truss material is an open, open type area space. Utilize a scaffold hanging piece for maintenance and repair work after installation, which is previously attached to the corners of the web and flange at a factory, etc., and a hanging metal is provided between the connecting beam at the top of the outer floor frame and the scaffold hanging piece. Between the lower flange of the beam and the web of the beam and the connecting beam. If the supporting structure is supported by an interposed jack support, the receiving beam receiving the concrete load of the outer floor frame of the overhanging floor slab is changed from the cantilever type to the both-end supporting type to minimize the deformation of the formwork. By
Improve the stability of the outer frame of the overhanging bottom slab formwork, perform the construction with high efficiency, and prevent the beam from interfering with the pier of the steel bridge when moving the formwork.
【００１６】即ち、該型枠の橋脚通過に際し、橋脚前後
の吊り金具は別タイプを取り付け、脚の手前でビームの
解放を行いその間はローラが当たっているため安定し、
脚の通過後は再びビームを取付けるようにする。That is, when the formwork passes through the pier, different types of hanging brackets are attached to the front and rear of the pier, and the beam is released in front of the pier.
After passing the leg, reattach the beam.
【００１７】而して、床版施工用の移動支保工を所定ス
パン移動した後は盛り替え的に上記上横梁を足場吊りピ
ースと吊り金具を介し、又は、前記パイプサポートを介
して、再び支保工床版型枠と再支持連結して盛替え的に
施工を反復するようにして、設計通りの精度で高能率に
安定した施工で出来る。After the moving support for the floor slab has been moved by a predetermined span, the upper cross beam is replaced and supported again via the scaffolding suspending piece and the suspending bracket, or again via the pipe support. The construction is re-supported and connected with the floor slab form, and the construction is repeated.
【００１８】而して、移動に際しては、桁上に軌条据付
金物を設置して、軌条を取付け、該軌条と大梁の交点で
は両者の間に駆動台車を配置し、移動は駆動台車の駆動
力により、軌条の上を移動する。At the time of movement, a rail mounting fixture is installed on the girder, the rail is mounted, and a driving bogie is arranged between the rail and the girder at the intersection of the rail and the driving force of the driving bogie is adjusted. Moves on the rail.
【００１９】そして、型枠が所定の位置に来たら、軌条
及び軌条据付金物は撤去し、コンクリート打設の障害を
除去出来、そこでコンクリート埋込金物が無くなり、金
物の転用が図られる。Then, when the formwork comes to a predetermined position, the rails and the rail mountings can be removed, and the obstacle of concrete placing can be removed, and there is no concrete embedded metal, and the metal can be diverted.
【００２０】したがって、所定の鋼橋が橋梁として施工
能率を安定させ低コストに施工出来るようにしにしたも
のである。[0020] Therefore, a predetermined steel bridge can be constructed at low cost by stabilizing construction efficiency as a bridge.
【００２１】[0021]
【発明が実施しようとする形態】次にこの出願の発明の
実施しようとする形態を１実施例の態様として図１乃至
図１０に基づいて説明すれば以下の通りである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of an embodiment of the present invention as an embodiment of the present invention, with reference to FIGS. 1 to 10.
【００２２】尚、図１１，１２と同一態様部分は同一符
号を用いて説明するものとする。The same parts as those in FIGS. 11 and 12 are described using the same reference numerals.
【００２３】図示態様において１４はこの出願の発明の
要旨の重要なポイントを成す鋼橋の橋梁のコンクリート
床版施工用のユニット移動支保工施工構造の態様であ
り、図１に示す態様はその全体概略指図であり、上述橋
軸方向所定スパンを介し、前後に大梁１５，１５が橋軸
方向に対し直角方向に渡設され、各該梁１５，１５の両
端部の間に亘っては一対の大スパンのトラス材１８が各
々渡設され、該各トラス材１８からは床版張出部の移動
支保工の外フレーム１９が吊設されている。In the illustrated embodiment, reference numeral 14 denotes an embodiment of a unit moving support construction structure for concrete slab construction of a steel bridge, which is an important point of the gist of the present invention, and the embodiment shown in FIG. It is a schematic instruction | indication, The main beam 15 and 15 are extended in the direction orthogonal to a bridge axis direction back and forth via the said bridge axis direction predetermined span, and a pair of both ends of each said beam 15 and 15 are provided. A truss member 18 having a large span is provided, and an outer frame 19 for moving and supporting a floor slab overhang is suspended from each truss member 18.
【００２４】そして、大梁１５，１５大スパンのトラス
材１８，１８により、大スペースのオープンエリア１７
が形成される。The large beams 15 and the truss members 18 having a large span allow the open area 17 of a large space to be provided.
Is formed.
【００２５】而して、両側のフレーム１９，１９間には
桁７，７の下部空間に亘り、ビーム材３０が連結解放自
在に設置され、該ビーム材３０上には作業床３０´ が
セットされて所定の作業に供されるようにされている。A beam member 30 is installed between the frames 19, 19 on both sides of the beams 7, 7 so that the beam member 30 can be freely connected and released, and a work floor 30 'is set on the beam member 30. And is provided for a predetermined operation.
【００２６】又、大梁１５の主桁７，７の上には図２に
示す様に各々ポール１６，１６が植立され、該大梁１５
の端部との間にワイヤー１７´ が張設されて、施工時
における大梁１５の剛性を充分に保持するようにされて
いる。As shown in FIG. 2, poles 16 and 16 are erected on the main girders 7 and 7 of the girder 15, respectively.
A wire 17 'is stretched between the ends of the girder 15 so as to sufficiently maintain the rigidity of the girder 15 during construction.
【００２７】而して、張出部の支保工の外フレーム１９
にあっては図２，５，６に示すように断面箱型のフレー
ムに形成され、上下の上横梁２２´´と下横梁２２´´
の間には該上下横梁２２´´，２２´´等の強度と剛性
を補強すべく斜材２２´´´´が介装されている。Thus, the outer frame 19 for supporting the overhang portion is provided.
As shown in FIGS. 2, 5, and 6, the cross section is formed in a box-shaped frame, and upper and lower upper cross beams 22 '' and lower cross beams 22 '' are formed.
Between the upper and lower cross beams 22 ", 22", a diagonal member 22 "" is interposed to reinforce the strength and rigidity of the beams.
【００２８】尚、図１，２において、２１，２１は軌条
据付金物であって、当該コンクリート床版打設の支保工
１４をユニットのストロークだけ移動するための主桁７
の上フランジ８から植立されて、上面がコンクリート６
´ の面より上となるようにされている。In FIGS. 1 and 2, reference numerals 21 and 21 denote rail mountings, which are main girders 7 for moving the support 14 for placing the concrete slab by the stroke of the unit.
Is planted from the upper flange 8 and the upper surface is concrete 6
′.
【００２９】尚、該軌条２１は、ユニット支保工１４が
所定位置に移動する時のみ必要であり、所定位置移動後
は、撤去する。The rail 21 is necessary only when the unit supporter 14 moves to a predetermined position, and is removed after moving the predetermined position.
【００３０】この為、埋設金物とならず、転用が可能で
あり、更に、コンクリート６´ 打設後の切断作業が解
消出来る。For this reason, it is not buried metal, can be diverted, and the cutting work after casting concrete 6 'can be eliminated.
【００３１】したがって、両大スパンのトラス１８及び
両サイドの張出部用移動支保工の張出部用の外フレーム
１９は共に所定の橋軸方向に移動するが、当該移動に際
し、床版底型枠受け用の外フレーム１９にあっては図７
に示す様に、主桁７のウエブと上フランジ８の隅角部に
あって予め工場にて取付けされた塗装面等の後補修工事
等に際して用いられる足場吊りピース２４が取付けられ
ているのを用い、該足場吊りピース２４に対し、ピン２
６を介し、略三角形状の吊り金具２５（該吊り金具２５
は移動時には不要であり取り外す）を取付け、その下部
側面に小型ジャッキ２８を介し、外フレーム１９´ の
つなぎ材２７を取付け、コンクリート打設時の上横梁２
２´ にかかる荷重を主桁７に流す。Therefore, both the truss 18 of both large spans and the outer frame 19 for the overhang portion of the overhanging movable support on both sides move in the predetermined bridge axis direction. FIG. 7 shows the outer frame 19 for receiving the formwork.
As shown in the figure, a scaffolding suspending piece 24 which is used at the time of post-repair work or the like at the corner of the web of the main girder 7 and the upper flange 8 and which has been previously attached at a factory is attached. And the pin 2
6, through a substantially triangular-shaped hanging bracket 25 (the hanging bracket 25).
Is unnecessary when moving, and is removed), and the connecting member 27 of the outer frame 19 'is mounted on the lower side of the lower frame via a small jack 28.
The load applied to 2 ′ is applied to the main girder 7.
【００３２】又、つなぎ梁２７には、図９に示す様に吊
り金具２５´ にローラ２８´ を枢支して外フレーム１
９のビーム３０を通過する際の圧縮荷重を逃がすように
する。Further, as shown in FIG. 9, a roller 28 'is pivotally supported by a hanging bracket 25' and the outer frame 1 is connected to the connecting beam 27.
The compression load when passing through the beam 30 is released.
【００３３】そして、図１０に示す様に吊り金具２５´
の下端には両端がそり状のガイド部３０を形成したガ
イドプレート３０´ を連接する。Then, as shown in FIG.
A guide plate 30 'having a sled-shaped guide portion 30 at both ends is connected to the lower end of the guide plate 30'.
【００３４】又、両張出部のコンクリート６´ の打設
時の外フレーム１９の支持は、図２の右半分に示す様
に、上述吊りピース２４に代えて、左半分に図示する桁
７の下フランジ８´ とフランジ８に連結介装してサポ
ートパイプ（ジャッキサポート３１）によって行うこと
も可能である。In addition, as shown in the right half of FIG. 2, the outer frame 19 is supported at the time of placing the concrete 6 ′ of the both overhanging portions, instead of the above-mentioned hanging piece 24, the beam 7 shown in the left half. It is also possible to connect and interpose the lower flange 8 'and the flange 8 with a support pipe (jack support 31).
【００３５】而して、該つなぎ梁２７には支保工の張出
部の床版支保工の外フレーム１９の上横梁２２´ を取
付け、又、主桁７のウエブとの間に桁塗装面保修用のパ
ッド２９を介装して張出部床版支保工の外フレーム１９
の所定ストローク移動の際に所定実効性と強度を保持し
ながら、又、主桁７の表面に対する塗膜の損傷や剥離を
防止するようにされている。The upper beam 22 'of the outer frame 19 of the floor slab support at the overhang of the support is attached to the connecting beam 27. Outer frame 19 for overhanging floor slab support with intervening repair pad 29
While maintaining the predetermined effectiveness and strength during the predetermined stroke movement, the coating of the main girder 7 is prevented from being damaged or peeled off.
【００３６】尚、図８は、当該張出部の床版支仕保工の
外フレーム１９と主桁７との吊り金具２５の取合い側面
図である。FIG. 8 is a side view of the hanging fitting 25 between the outer frame 19 of the floor slab supporter and the main girder 7 at the overhang portion.
【００３７】尚、吊り金具２５の介装により、外フレー
ム１９は片持ち支持にはならず、両端支持の態様とな
る。It should be noted that the outer frame 19 is not supported by the cantilever but is supported by both ends due to the interposition of the hanging bracket 25.
【００３８】而して、主桁７，７の上フランジ８，８間
のコンクリート床版の打設に用いるメタルフォーム２３
と両サイドの張出部の外フレーム１９のメタルフォーム
５との取り合いは図４に示す通りである。Thus, the metal foam 23 used for placing the concrete slab between the upper flanges 8, 8 of the main girders 7, 7 is provided.
The connection between the outer frame 19 and the metal foam 5 of the overhanging portions on both sides is as shown in FIG.
【００３９】上述の如く、床版底型枠受け用の外フレー
ム１９と主型枠フレーム１４との一体の所定のストロー
クの移動は可能ではあるが、当該外フレーム１９，１９
間の下側に渡設されているビーム３０については、外フ
レーム１９が図示しない橋脚の通過時に干渉するが、移
動時は、該外フレーム１９の偏心により、ビーム３０に
は引張力が作用するが、該ビーム３０に組み込まれた図
示ないジャッキ式伸縮装置を伸縮することにより、ビー
ム３０に作用している上記引張力は除荷され、該ビーム
３０の取外しは容易となり、この盛り替え作業を橋脚支
点上通過時に、一本づつ行えば、張出部型枠支保工の外
フレーム１９全体の橋脚通過が可能となる。As described above, it is possible to move the outer frame 19 for receiving the floor slab bottom formwork and the main formwork frame 14 by a predetermined stroke.
The outer frame 19 interferes with the beam 30 extending below the space between the beams when the outer frame 19 passes through a pier (not shown). However, when the outer frame 19 moves, a tensile force acts on the beam 30 due to the eccentricity of the outer frame 19. However, by expanding and contracting a jack-type expansion and contraction device (not shown) incorporated in the beam 30, the tensile force acting on the beam 30 is unloaded, and the beam 30 can be easily removed. When passing over the pier fulcrum, if it is performed one by one, the entire outer frame 19 of the overhanging form support can pass through the pier.
【００４０】上述構成において、少主桁の鋼橋を構築す
るに際し、該少主桁７に大梁１５，１５を橋軸方向前後
に横設すると共に、該各梁１５の両端部に大スパンのト
ラス材１８，１８を張出部の底床版張出部用移動支保工
の外フレーム１９として一体的に設置した状態で、初期
セットし、桁７，７の上フランジ８，８上に設けた架台
に配設した軌条ガイドに主型枠をメタルフォーム２３を
設けてコンクリートを所定に打設すると共に、床版張出
部の移動用の支保工の外フレーム１９から所定の架台を
介して設けた張出部用のメタルフォームを介し、当該張
出部のコンクリート６´ の打設を行い、主型枠フレー
ム１４の大梁１５，１５、及びトラス材１８，１８によ
る剛性不足や床版張出部の梁の外フレーム１９の剛性不
足はビーム３０や斜材２４´´´´、又、桁のフランジ
とウエブの隅角部に予め工場取付けされた足場吊りピー
ス２４を介し、吊り金具２５、又は、パイプサポート
（ジャッキパイプ）３１によりその強度を補強され、所
定の剛性を保持する。In the construction described above, when constructing a steel bridge with a small main girder, large beams 15, 15 are laid horizontally on the small main girder 7 in the longitudinal direction of the bridge, and large spans are provided at both ends of each beam 15. The truss members 18 are initially set as the outer frame 19 of the movable support for the bottom floor slab overhang of the overhang, and are initially set and provided on the upper flanges 8, 8 of the girders 7, 7. The main formwork is provided with a metal form 23 on the rail guide disposed on the gantry, concrete is poured into the gantry in a predetermined manner, and the outer frame 19 of the shoring for moving the overhang portion of the floor slab is passed through the predetermined gantry. The concrete 6 'of the overhanging portion is cast through the provided overhanging metal foam, and the rigidity of the girders 15, 15 of the main formwork frame 14 and the truss members 18, 18 is insufficient, and the floor slab is overlaid. Insufficient rigidity of the outer frame 19 of the projecting beam is due to the beam 30 24 ′ ″ ″, the strength of which is reinforced by a hanging metal fitting 25 or a pipe support (jack pipe) 31 via a scaffolding hanging piece 24 factory-installed in advance at the corners of the spar flange and the web, Maintain predetermined rigidity.
【００４１】而して、所定のタイミングでのコンクリー
トの打設が終了すると、所定スパンのストロークで主型
枠１４と床版張出部移動用の支保工の外フレーム１９を
軌条ガイド１１を介し、前進させ盛替え的にセットし
て、コンクリート６´ の打設を行う。When the concrete is poured at a predetermined timing, the main formwork 14 and the outer frame 19 for moving the slab over the floor slab are moved via the rail guide 11 with a stroke of a predetermined span. Then, the concrete is set forward, and the concrete 6 'is poured.
【００４２】尚、コンクリート６´ を打設しようとす
るブロックに取付けた軌条ガイド１１及び、その架台
は、移動型枠の移動、固定後、コンクリート打設前に撤
去出来るため、埋設方式とならず、転用が図れる。The rail guide 11 attached to the block on which the concrete 6 'is to be cast and its base can be removed before the concrete is cast after moving and fixing the movable formwork. , Can be diverted.
【００４３】尚、当該図７に於いて、図上つなぎ梁２７
から右側の部分はコンクリート打設時のみ連結し、移動
時は解放するものとする。In FIG. 7, the connecting beam 27 is shown.
The part on the right side from is connected only when concrete is cast and released when moving.
【００４４】そして、主フレーム１４と外フレーム１９
の移動に際し、桁７の表面に対する不測の摺動等に際
し、塗膜等の剥離や損傷等はパッド２９により、何等生
ずる虞れはなく、そして、当該移動の間の図示しない橋
脚などがあって、両サイドの外フレーム１９間のビーム
３０が干渉するような場合にはビーム３０を１本づつ解
放し、その間に図９，１０に示す様に、つなぎ梁２７に
予め取付けたローラー２８と橋脚前後の足場吊りピース
２４に取付けた吊り金具２５´ 先端のプレート２８´
が当たっているため安定し、（当該各部品は作業人の手
作業により収納が可能な程度の重量、形状である）外フ
レーム１９が橋脚を通過した後で再び盛替え的にビーム
３０を連結し、該外フレーム１９の移動がスムーズに行
われるようにする。Then, the main frame 14 and the outer frame 19
During the movement, there is no danger of peeling or damage of the coating film or the like caused by the pad 29 at the time of unexpected sliding or the like on the surface of the girder 7, and there is a pier (not shown) or the like during the movement. If the beams 30 between the outer frames 19 on both sides interfere with each other, the beams 30 are released one by one, and between them, as shown in FIGS. Hanging bracket 25 'attached to the front and rear scaffold hanging pieces 24' Plate 28 'at the tip
And the beam 30 is connected to the beam 30 again after the outer frame 19 has passed through the pier (the parts are of such a weight and shape that they can be stored manually by the worker). Then, the movement of the outer frame 19 is performed smoothly.
【００４５】尚、図１０に於て吊り金具２５´ 先端の
プレート２８´ の両端がカールしており、ローラ２８
が通過し易いようにする。In FIG. 10, both ends of the plate 28 'at the tip of the hanging bracket 25' are curled,
Is easy to pass through.
【００４６】この様にして、少主桁上のコンクリート６
´ の打設は全幅に於て張出部タイプの外フレーム１９
を介し、スムーズに行われ、又、ワイヤーやロッドや埋
込み金物が突出していないためにその取り外しや付帯工
事もなく、高能率で設計通りの精度で鋼橋が作製出来
る。In this way, the concrete 6 on the small main girder
′ Is overhang type outer frame 19 over the entire width.
The process can be carried out smoothly, and since the wires, rods and embedded hardware do not protrude, there is no removal or incidental work, and a steel bridge can be manufactured with high efficiency and accuracy as designed.
【００４７】尚、この出願の発明の実施態様は上述実施
例に限るものでないことは勿論であり、例えば、外フレ
ームの斜材についてはクロスタイプにする等種々の態様
が採用可能である。It should be noted that the embodiments of the invention of this application are not limited to the above-described embodiments, and various modes such as, for example, using a cross-type diagonal member for the outer frame can be adopted.
【００４８】又、設計変更的には足場吊りピースに対す
る吊り金具の左右方向の取付け態様は適宜に行われるも
のである。Further, in terms of design change, the manner in which the hanging fittings are attached to the scaffold hanging pieces in the left-right direction is appropriately performed.
【００４９】[0049]
【発明の効果】以上、この出願の発明によれば、少主桁
の鋼橋の床版コンクリートの打設を行って橋梁を構築す
るに際し、ワイヤーやロッドや軌条ガイド等の打設コン
クリート上の突出部もなく、トラス材から吊設する外フ
レームを桁の下フランジ等に荷重をサポートすることで
打設コンクリートの上面にロッドやワイヤー、金物等が
露出しないメリットをも用いることが出来、施工能率が
良く、したがって、工期を短縮され、結果的にコストダ
ウンが図れ、安全性も高い施行が可能であるというメリ
ットがある。As described above, according to the invention of this application, when constructing a bridge by slab concrete slab of a steel bridge with a small number of girders, wires, rods, rail guides, etc. There is no protruding part, and the outer frame suspended from the truss material supports the load on the lower flange of the girder, so the advantage that rods, wires, hardware, etc. are not exposed on the upper surface of the cast concrete can be used. There is an advantage that the efficiency is good, the construction period is shortened, the cost can be reduced as a result, and the execution with high safety is possible.
【００５０】又、床版に対するコンクリート打設時のコ
ンクリート荷重等を均等に分担させることにより外フレ
ームの構造の安定性を向上させ、コンクリートが所用の
効果発現時には、移動型枠の移動に先だって取外すこと
が出来るために、施工作業が極めて容易に出来るという
効果もある。Further, the stability of the structure of the outer frame is improved by evenly sharing the concrete load and the like when the concrete is poured on the floor slab, and when the concrete exhibits the desired effect, the concrete is removed prior to the movement of the movable formwork. Because of this, there is also an effect that the construction work can be extremely easily performed.
【００５１】そして、荷重の形態としては、床版打設前
と床版打設後の二つに分類され、作用荷重の大きな床版
打設時の荷重に合わせて、構造を決めるという不経済な
点が避けられ、荷重に適した型枠フレームの構造を適宜
に変化出来るようにすることにより、これまた、作業性
が極めて向上するという優れた効果が奏される。The form of the load is classified into two types, that is, before the floor slab is cast and after the slab is laid. By making it possible to appropriately change the structure of the formwork frame suitable for the load, it is possible to obtain an excellent effect that workability is extremely improved.
【００５２】又、外フレームを大スパンのトラスから吊
り下げる形式のハンガータイプ等や桁の下フランジに支
持するタイプにすることにより、コンクリート打設時の
荷重による撓みが床版コンクリートの成形に問題となる
虞が解消出来、剛性度が向上するという効果もある。In addition, by using a hanger type or the like in which the outer frame is suspended from a large span truss or a type in which the outer frame is supported by the lower flange of the girder, the deflection due to the load at the time of placing concrete causes a problem in the molding of floor slab concrete. Can be eliminated and the rigidity can be improved.
【００５３】又、工場製品として桁に予め取り付けて設
けられている足場吊りピースを利用し、外フレームを両
端支持構造とすることにより、打設時に増大する荷重を
合理的に処理出来、外フレームの軽量化も出来るという
効果もある。Further, by using a scaffold hanging piece which is attached to a girder in advance as a factory product and using an outer frame having a support structure at both ends, it is possible to rationally handle a load which increases at the time of driving. There is also an effect that the weight can be reduced.
【００５４】そして、床版コンクリート打設時には床版
底型枠における主型枠フレームに作用する荷重の一部が
吊り金具や、ジャッキサポートを介して桁の上、又は、
下フランジとウエブの隅角部に流れ、一部は大スパンの
トラスを介し、打設エリアに打設エリア前後の桁に作用
し、桁の上フランジに流れ、したがって、構造力学的に
コンクリート打設時には無理が生じないという効果があ
る。At the time of placing concrete on the floor slab, a part of the load acting on the main formwork frame of the bottom formwork of the floor slab is formed on a girder via a hanging bracket or a jack support, or
It flows into the lower flange and the corner of the web, and partly through a large span truss, acts on the girder before and after the casting area, flows into the upper flange of the girder, and therefore structurally mechanized concrete There is an effect that no unreasonableness occurs at the time of setting.
【００５５】而して、少主桁の鋼橋のコンクリート床版
型枠の１ユニットが大型になり、その剛性や強度が不足
しがちになるのを大スパンのトラスにより強度が充分に
保証されうる利点があるものである。Thus, the fact that one unit of the concrete slab formwork of the steel bridge of small main girder becomes large and its rigidity and strength tend to be insufficient is sufficiently secured by the large span truss. There are advantages.
【００５６】又、型枠の移動時には外フレームに作用す
る荷重が少量であるがために、上記橋脚と外フレームが
干渉する吊り金具等を取り外しても何等支障がなく、移
動が可能であるという利点がある。In addition, since the load acting on the outer frame is small when the formwork is moved, it is possible to move the formwork without any hindrance even if the hanging fittings that interfere with the pier and the outer frame are removed. There are advantages.
【００５７】而して、該吊り金具やパイプサポートは盛
替え的に転用可能であるために資材の抑制にもプラスす
るというメリットがある。Since the hanging bracket and the pipe support can be diverted as a replacement, there is a merit that the material can be reduced.
【００５８】上述の如く、型枠移動設置の作業性はコン
クリート打設工事の作業性について障害物が無いことか
ら、格段に作業性が向上し、埋め込み金具等の後除去等
の繁雑な付帯工事等も無くなり、作業性の向上が図れる
という効果が奏される。As described above, since the workability of moving and setting the formwork has no obstacle to the workability of the concrete casting work, the workability is remarkably improved, and complicated incidental works such as post-removal of embedded metal fittings and the like are performed. And so on, and the effect of improving workability is achieved.
【００５９】又、桁の下部で左右の外フレームを解放自
在に連結している外ビームが橋脚通過時に干渉するとい
うことも上述と同様に桁のウエブとフランジの隅角部に
工場で予め取付けした吊りピースを用いて吊り金具を取
り付けたものを用い、これに当板を取付け外フレームの
上横梁が当該当金物に乗り上げることにより作用する圧
縮力を開放出来るために、当該連結部材を順次盛替え的
に取り外すことが出来、結果的に外フレーム全体の橋脚
に対する通過が可能であるという効果も奏される。Also, the fact that the outer beams releasably connecting the left and right outer frames at the lower part of the girder interfere with each other when passing through the piers is also preliminarily attached to the corners of the web and flange of the girder at the factory in the same manner as described above. In order to release the compressive force acting when the upper cross beam of the outer frame rides on the metal fitting, the connecting member is sequentially mounted. The outer frame can be removed instead, so that the entire outer frame can pass through the pier.
【００６０】そして、当該連結部材の取付け取外し作業
も橋脚上部の作業床に設置する橋脚足場上で容易に施工
が出来るために余分な設備の追加がなく安全で低コスト
で作業が出来るという効果がある。Also, since the work of attaching and detaching the connecting member can be easily performed on the pier scaffold installed on the work floor above the pier, there is an effect that the operation can be performed safely and at low cost without adding extra equipment. is there.
【図１】この出願の発明の床版外型枠部フレームの全体
概略斜視図である。FIG. 1 is an overall schematic perspective view of a floor slab outer frame portion frame of the invention of this application.
【図２】同全体概略断面図である。FIG. 2 is an overall schematic sectional view of the same.
【図３】大スパンのトラスの概略平面図である。FIG. 3 is a schematic plan view of a large span truss.
【図４】コンクリート打設床版型枠の桁の取合い断面図
である。FIG. 4 is a sectional view of a girder of a concrete casting floor slab formwork.
【図５】図２の・−・断面平面図である。FIG. 5 is a sectional plan view of FIG. 2;
【図６】同図２の・−・断面平面図である。6 is a sectional plan view of FIG. 2; FIG.
【図７】桁の部位と上フランジに設けた足場吊りピース
と吊り金具の取合い部分断面正面図である。FIG. 7 is a front view of a part of a girder and a scaffold hanging piece provided on an upper flange and a hanging metal fitting.
【図８】同概略側面図である。FIG. 8 is a schematic side view of the same.
【図９】橋脚乗り越し用の吊り金具の取合い部分断面正
面図である。FIG. 9 is a front view, partially in section, of a fitting for hanging over a pier.
【図１０】同吊り金具とガイドプレートとの取合い部分
斜視図である。FIG. 10 is a perspective view of a part where the hanging bracket and the guide plate are joined.
【図１１】在来態様の床版型枠の取合い半断面図であ
り、（イ）はハンガータイプの態様図であり、（ロ）は
サポートタイプの態様図である。11A and 11B are half cross-sectional views of a conventional floor slab formwork, wherein FIG. 11A is a hanger-type embodiment and FIG. 11B is a support-type embodiment.
【図１２】在来態様のハンガータイプの床版型枠フレー
ムの全体概略斜視図である。FIG. 12 is an overall schematic perspective view of a conventional hanger type floor slab form frame.
７ 桁 ６ 床版コンクリート １５ 大梁 ８ トラス材 ３０ ビーム ８ 上フランジ ２４ スパン ２９ パッド ２８ ローラ １８´ 補強用トラス材 １９ 外フレーム ３１ パイプサポート ２７ つなぎ梁 7 girder 6 floor slab concrete 15 girders 8 truss material 30 beam 8 upper flange 24 span 29 pad 28 roller 18 ′ reinforcing truss material 19 outer frame 31 pipe support 27 connecting beam
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 聡哉 千葉県野田市二ッ塚118番地 川重工事株 式会社内 (72)発明者 新吉 信市 千葉県野田市二ッ塚118番地 川重工事株 式会社内 Ｆターム(参考） 2D059 AA14 CC04 DD09 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Ito 118 Nittazuka, Noda-shi, Chiba Kawaji Construction Co., Ltd. F-term in the formula company (reference) 2D059 AA14 CC04 DD09
Claims (4)
版工事を行うに際し、床版底型枠受け用の外フレームを
移動する支保工工法において、コンクリート床版打設エ
リアの橋軸方向前後に橋軸方向に直角に大梁を渡設し、
該両大梁の両端部に大スパンのトラス材を渡設し、該大
梁と大スパンのトラス材により形成される空間をオープ
ンタイプのエリアとし、該各大スパンのトラス材から床
版張出部の底型枠受け用の外フレームを吊設し、該外フ
レームが該外フレームの上下の横梁間に対し斜材を介し
て正面視箱型に形成され、該両側の床版底型枠受け用の
外フレームの間を桁の下部空間でビーム材で連結解放自
在にしたことを特徴とする橋梁床版張出部用移動支保工
工法。In the method of supporting a concrete slab by moving an outer frame for receiving a slab of a bottom slab when a slab of a slab of a small main girder is to be constructed, A girder is installed at right angles to the bridge axis direction before and after the axial direction,
A large span truss material is provided at both ends of the two girders, and a space formed by the girders and the large span truss material is an open type area. An outer frame for receiving a bottom formwork is suspended, and the outer frame is formed in a box shape as viewed from the front with a diagonal member between upper and lower cross beams of the outer frame. A movable support method for a bridge deck slab overhang, characterized in that beams between the outer frames of the bridge are freely connected and released by beams in the space below the girder.
版工事を行うに際し、床版底型枠受け用の外フレームを
移動する支保工工法において、床版打設エリアの橋軸方
向前後に橋軸方向に直角に大梁を渡設し、該両大梁の両
端部に大スパンのトラス材を渡設し、該各大スパンのト
ラス材から床版張出部の底型枠受け用の外フレームを吊
設し、該両側の床版底型枠受け用の外フレームの間を桁
の下部空間でビーム材で連結解放自在にし、而して、桁
の上フランジとウエブの隅角部に予め工場取付けされた
足場吊りピースと上記底型枠受け用の外フレームの上横
梁に介装したつなぎ梁との間に吊り金具を介装自在にす
るようにすることを特徴とする橋梁床版張出部用移動支
保工工法。2. A method of supporting a slab of a small main girder bridge by moving an outer frame for receiving a slab bottom formwork when performing a slab of a slab of a slab of a small main girder in a bridge axis direction of a slab placement area. A girder is laid at right and left angles to the bridge axis direction in front and back, and a truss material of a large span is laid at both ends of the girders. The outer frame of the slab is suspended, and the outer frame for receiving the bottom formwork on both sides of the slab is freely connected and released by a beam material in the lower space of the spar. A bridge which is capable of interposing a hanging bracket between a scaffold hanging piece previously attached to a part thereof in a factory and a connecting beam interposed on an upper cross beam of the outer frame for receiving the bottom formwork. Movement support method for overhang of floor slab.
ぎ梁と該桁の上記フランジの隅角部に対し設けた上記吊
り金具の間にローラを枢支配設させ、ビームを取外し自
在にし、橋脚に対する通過を許容にするようにすること
を特徴とする請求項２記載の橋梁床版張出部用移動支保
工工法。3. A roller is pivotally provided between a connecting beam of the outer frame for receiving the floor slab bottom form and the hanging metal provided at a corner of the flange of the spar, and the beam is freely detachable. 3. The method of claim 2, wherein the bridge pier is allowed to pass.
版工事を行うに際し、床版底型枠受け用の外フレームを
橋梁の床版張出部を移動する支保工工法において、床版
打設エリアの橋軸方向前後に橋軸方向に直角に大梁を渡
設し、該両大梁の両端部に大スパンのトラス材を渡設
し、該各大スパンのトラス材から床版張出部の底型枠受
け用の外フレームを吊設し、該両側の床版底型枠受け用
の外フレームの間を桁の下部空間でビーム材で連結解放
自在にし、而して、桁の下フランジとウエブとの隅角部
と上記つなぎ梁の間にジャッキサポートを介装自在にす
るようにすることを特徴とする橋梁床版張出部用移動支
保工工法。4. A flooring slab of a small main girder bridge, wherein an outer frame for receiving a bottom formwork of a floor slab is provided with a floor slab. A girder is laid at right angles to the bridge axis direction before and after the bridge axis direction of the slab placement area, large span truss materials are spanned at both ends of both girders, and floor slabs are stretched from each large span truss material. An outer frame for receiving the bottom formwork of the protruding portion is suspended, and the space between the outer frames for receiving the floor form bottom formwork on both sides can be freely connected and released by a beam material in a space below the girder. A jack support between the corner of the lower flange and the web and the connecting beam so that the jack support can be freely interposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11066543A JP2000265417A (en) | 1999-03-12 | 1999-03-12 | Moving timbering construction method for bridge floor slab overhang section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11066543A JP2000265417A (en) | 1999-03-12 | 1999-03-12 | Moving timbering construction method for bridge floor slab overhang section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000265417A true JP2000265417A (en) | 2000-09-26 |
Family
ID=13318932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11066543A Pending JP2000265417A (en) | 1999-03-12 | 1999-03-12 | Moving timbering construction method for bridge floor slab overhang section |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000265417A (en) |
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