JP2009281141A - Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge - Google Patents

Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge Download PDF

Info

Publication number
JP2009281141A
JP2009281141A JP2009203284A JP2009203284A JP2009281141A JP 2009281141 A JP2009281141 A JP 2009281141A JP 2009203284 A JP2009203284 A JP 2009203284A JP 2009203284 A JP2009203284 A JP 2009203284A JP 2009281141 A JP2009281141 A JP 2009281141A
Authority
JP
Japan
Prior art keywords
floor slab
hollow floor
bridge
hollow
main girder
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.)
Ceased
Application number
JP2009203284A
Other languages
Japanese (ja)
Inventor
Satoshi Suzuki
郷士 鈴木
Original Assignee
As Giken Kk
As技研株式会社
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 As Giken Kk, As技研株式会社 filed Critical As Giken Kk
Priority to JP2009203284A priority Critical patent/JP2009281141A/en
Publication of JP2009281141A publication Critical patent/JP2009281141A/en
Ceased legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method of a floor slab, capable of achieving concrete placing work by merely completing steps of manufacturing all major structures in a factory, carrying accurate products into a construction site, and inserting and binding distributing bars, and thus completing an accurate hollow slab bridge with a shortened work period and reduced labor power. <P>SOLUTION: The hollow floor slab unit for prefabricated bridge is composed of a main girder formed into a hollow shape by reinforcing bars, a group of reinforcing bars different from the reinforcing bars constituting the main girder, and a steel form covering the main girder and the group of reinforcing bars so as to form a space part between the group of reinforcing bars and the steel form, in which reinforcing steel is adhered to the steel form. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、橋梁の一建設方法である中空床版橋、中空床版橋を構成する為の組立式橋梁用中空床版ユニット、組立式橋梁用中空床版及び中空床版橋梁の施工方法に関するものである。   TECHNICAL FIELD The present invention relates to a hollow floor slab bridge as a construction method of a bridge, a hollow floor slab unit for an assembled bridge for constituting a hollow floor slab bridge, a hollow floor slab for an assembled bridge, and a method for constructing a hollow floor slab bridge. Is.
一般の中空床版橋は、建設場所の地面より鋼材等の支保工という仮設材を構築する。その支保工上に型枠材を並べて型枠工事とし、その内側に鉄筋を組み立てて中空部用のボイド管を設置後、コンクリートを注入して乾燥養生後に型枠材を解体して完成させる施工方法が、最も多く採用されている。   A general hollow floor slab bridge is constructed of temporary materials such as support materials such as steel materials from the ground of the construction site. Formwork is arranged by placing the formwork material on the support, and after constructing the rebar and installing the void pipe for the hollow part, injecting concrete and drying and curing, dismantle the formwork material and complete it The method is most often adopted.
即ち、従来の中空床版橋は、図4に示す通り、中空床版橋2は、鉄筋6とコンクリート5の構成体である。   That is, in the conventional hollow floor slab bridge, as shown in FIG. 4, the hollow floor slab bridge 2 is a structural body of reinforcing bars 6 and concrete 5.
そして、その施行方法としては、一般的には、図3から理解されるように、一般的な中空床版橋を建設するには、支保工10により型枠19を支えた上で、鉄筋6を組み立てた後にコンクリート5を注入する方法である。   And as the enforcement method, as generally understood from FIG. 3, in order to construct a general hollow floor slab bridge, after supporting the formwork 19 by the supporting work 10, the rebar 6 This is a method of injecting concrete 5 after assembling.
係る従来の施行方法にあっては、当該型枠19を造る人を型枠工、当該鉄筋を組み立てる人を鉄筋工と称してそれぞれ熟練者が、施工するため、熟練工の不足や工事費の高騰、工事施工日数の負担が、多いことが、現状である。   In such a conventional enforcement method, the skilled worker constructs the form 19 and the person who assembles the reinforcing bar is called a rebar builder, and the skilled workers construct each of them. At present, the burden of construction work is heavy.
更に、図8に示す様に、コンクリートミキサー車14或はポンプ車12等を使用して当該中空床版橋2のコンクリート5注入が完了し、コンクリート5が硬化した後、図3で示す型枠19、支保工10、18はすべて解体し現場外に撤去されて完成となる。   Further, as shown in FIG. 8, after the concrete 5 injection of the hollow floor slab bridge 2 is completed using the concrete mixer truck 14 or the pump truck 12 and the concrete 5 is hardened, the mold shown in FIG. 19. Supporting works 10 and 18 are all dismantled and removed from the site to be completed.
この施工方法は、型枠材19の現場での製作や撤去をしなければならず、高コストの橋梁となっている。また中空床版橋の外形線を現場で型枠職人の技能で製作する為極めて難易度が高く熟練度を必要としている。   This construction method requires the production and removal of the formwork material 19 on site, and is a high-cost bridge. In addition, since the outline of the hollow floor slab bridge is produced on site with the skill of a formworker, it is extremely difficult and requires a high level of skill.
従来の中空部を内部に取り入れて軽量化を図る床版構造としては、特開平7−26517号公報(特許文献1)が見られるが、本発明の様なユニット化された中空床版構造に関しては開示が見られない。   JP, 7-26517, A (patent documents 1) can be seen as a floor slab structure which takes in a hollow part inside and aims at weight reduction, but relates to a unitized hollow floor slab structure like the present invention. Is not disclosed.
又、床版用型枠の構造を開示するものとして、特開平11−166207号公報(特許文献2)或は特開2004−19385号公報(特許文献3)等が見られるが、本発明の様な片梁式床版用型枠の構造に関しては開示も示唆も無い。   Japanese Laid-Open Patent Publication No. 11-166207 (Patent Document 2) or Japanese Laid-Open Patent Publication No. 2004-19385 (Patent Document 3) is disclosed as a disclosure of the structure of the floor slab formwork. There is no disclosure or suggestion regarding the structure of such a single beam type slab formwork.
特開平7−26517号公報Japanese Patent Laid-Open No. 7-26517 特開平11−166207号公報Japanese Patent Laid-Open No. 11-166207 特開2004−19385号公報JP 2004-19385 A
従って本発明の目的は、上記した従来技術の難点を改良し、運搬や施工作業が容易で、工期は短く、しかも製作及び施工コストが低くて、さらに高い耐久性と均一性を備えた中空床版橋を建設するための、組立式橋梁用中空床版ユニット、組立式橋梁用中空床版並びに中空床版橋梁の施工方法を提供するものである。   Accordingly, the object of the present invention is to improve the above-mentioned problems of the prior art, facilitate the transportation and construction work, shorten the construction period, lower the production and construction cost, and provide a hollow floor with higher durability and uniformity. The present invention provides a hollow floor slab unit for assembling bridges, a hollow floor slab for assembling bridges, and a method for constructing a hollow floor slab bridge for constructing a plate bridge.
本発明は、上記した目的を達成するため、以下に記載されたような、基本的な技術構成を採用するものである。   In order to achieve the above-described object, the present invention adopts a basic technical configuration as described below.
即ち、本発明の第1の態様としては、鉄筋により中空状に形成された主桁と当該主桁の側面に配置された当該主桁を構成する鉄筋とは異なる鉄筋群と当該鉄筋群と当該主桁とを被覆し、当該鉄筋群との間に空間部を形成している鋼製型枠とで構成されており、当該鋼製型枠には、補強鋼が接着されていることを特徴とする組立式橋梁用中空床版ユニットであり、又、第2の態様としては、上記した当該組立式橋梁用中空床版ユニットの少なくとも2個を橋梁の建設現場に於いて、当該各ユニットにおける当該主桁部が互いに対向して並列して配置させると共にそれぞれの上面が略水平となる様に互いに対向させる様に配列してその両者の相互に対向する端部同士を適宜の方法で接続した事を特徴とする組立式橋梁用中空床版である。   That is, as a first aspect of the present invention, a main girder formed hollow by a reinforcing bar, a reinforcing bar group different from the reinforcing bar constituting the main girder arranged on the side surface of the main girder, the reinforcing bar group, and the It is composed of a steel mold that covers the main girder and forms a space between the reinforcing bar group, and a reinforcing steel is bonded to the steel mold As a second aspect, at least two of the above-described assembly-type hollow floor slab units for bridges are used in the construction site of the bridge. The main girder portions are arranged so as to face each other in parallel and arranged so as to face each other so that the upper surfaces thereof are substantially horizontal, and the mutually opposite ends are connected by an appropriate method. It is a hollow floor slab for an assembling bridge characterized by the above.
更に、本発明に於ける第3の態様としては、当該組立式橋梁用中空床版ユニットを橋台上又は橋脚上に架設搭載させる工程と当該組立式橋梁用中空床版ユニットを現場で支える支保工と、当該組立式橋梁用中空床版ユニットで構成された組立式橋梁用中空床版の該空間領域内にコンクリートを注入する工程とから構成されている事を特徴とする中空床版橋梁の施工方法である。   Further, according to a third aspect of the present invention, there are a step of installing and mounting the hollow floor slab unit for assembling bridges on an abutment or a pier, and a support work for supporting the hollow floor slab unit for assembling bridges on site. And a step of injecting concrete into the space region of the hollow floor slab for the assembly type bridge composed of the hollow floor slab unit for the assembly type bridge. Is the method.
本発明に係る当該組立式橋梁用中空床版ユニット、組立式橋梁用中空床版及び中空床版橋梁の施工方法は、上記した様な技術構成を採用しているので、基本的には主構成体は、工場にて製作される構造を有する事によって、従来の中空床版橋と異なり、現場での工数を低く抑えることが可能となり、解体費を省略することによりコストを低減するのみならず、補強鋼の採用により鋼製型枠の耐久性を向上し、補強鋼を強度部材として鋼製型枠保護材に組み込むことによって安全性、耐久性の完成度が高い中空床版橋が完成するものである。   Since the construction method of the hollow floor slab unit for assembling bridges, the hollow floor slab for assembling bridges, and the hollow floor slab bridge according to the present invention adopts the above-described technical configuration, basically the main configuration Unlike the conventional hollow floor slab bridge, the body has a structure manufactured at the factory, making it possible to reduce the number of man-hours on site and not only reducing costs by eliminating dismantling costs. By adopting reinforced steel, the durability of the steel formwork is improved. By incorporating the reinforced steel into the steel formwork protective material as a strength member, a hollow floor slab bridge with high safety and durability is completed. Is.
さらに、資材の運搬作業や、施工作業を容易に行うことができるようになるので、工期と工事費を低減することが可能となる。   Furthermore, since it is possible to easily carry materials and perform construction work, the construction period and construction cost can be reduced.
図1は、本発明の組立式橋梁用中空床版の一具体例の構成を示す断面図である。FIG. 1 is a cross-sectional view showing a configuration of a specific example of a hollow floor slab for an assembled bridge according to the present invention. 図2は、本発明の組立式橋梁用中空床版ユニットの個別的構成を示す断面図である。FIG. 2 is a cross-sectional view showing an individual configuration of a hollow floor slab unit for an assembled bridge according to the present invention. 図3は、従来の中空床版橋建設方法を示す断面図である。FIG. 3 is a cross-sectional view showing a conventional method for constructing a hollow floor slab bridge. 図4は、本発明の中空床版橋梁の完成時における断面構造を示す断面図である。FIG. 4 is a cross-sectional view showing a cross-sectional structure when the hollow floor slab bridge of the present invention is completed. 図5は、本発明の鋼製型枠と補強鋼の構造を示す斜視図である。FIG. 5 is a perspective view showing the structure of the steel mold and the reinforcing steel of the present invention. 図6は、本発明の完成時における橋梁全体の側面図である。FIG. 6 is a side view of the entire bridge when the present invention is completed. 図7は本発明の片持ち部中空床版体11の構成の具体例を示す斜視図である。FIG. 7 is a perspective view showing a specific example of the configuration of the cantilever hollow floor plate 11 of the present invention. 図8はコンクリート5の流し込みの工程における施工状況を示す断面図である。FIG. 8 is a cross-sectional view showing a construction situation in the process of pouring the concrete 5.
以下に本発明に係る組立式橋梁用中空床版ユニット11及び組立式橋梁用中空床版20ならびに中空床版橋梁の施工方法の幾つかの具体例を図面を参照しながら詳細に説明する。   Several specific examples of the method for constructing a hollow floor slab unit 11 for an assembled bridge, a hollow floor slab 20 for an assembled bridge, and a hollow floor slab bridge according to the present invention will be described in detail below with reference to the drawings.
先ず、図1は、本発明に於ける組立式橋梁用中空床版20の一具体例に於ける内部構造の概略を示す、当該組立式橋梁用中空床版20の長手方向と直交する面で見た断面図である。   First, FIG. 1 shows the outline of the internal structure of a specific example of the hollow floor slab 20 for assembling bridges according to the present invention on a plane orthogonal to the longitudinal direction of the hollow floor slab 20 for assembling bridges. FIG.
当該図1から理解できる通り、本発明に於ける当該組立式橋梁用中空床版20は、当該橋梁の長手方向に沿った両側の端縁部を構成する一対の組立式橋梁用中空床版ユニット11と、当該一対の組立式橋梁用中空床版ユニット11間に配置挿入されている一つ或は複数個の独立した中間主桁部12と中空体部7とが相互に接続されて一体化されたものであり、当該組立式橋梁用中空床版は最終的には、その内部空間部にコンクリートが注入されて完成されるものである。   As can be understood from FIG. 1, the assembling-type bridge hollow floor slab 20 according to the present invention includes a pair of assembling-type bridge hollow floor slab units that constitute edge portions on both sides along the longitudinal direction of the bridge. 11 and one or a plurality of independent intermediate main girder portions 12 and hollow body portions 7 which are arranged and inserted between the pair of hollow bridge slab units 11 for assembling bridges are connected and integrated. The assembling-type hollow floor slab is finally completed by pouring concrete into the internal space.
本発明に於いては、先ず、図2に示す様な構造を有する組立式橋梁用中空床版ユニット11を橋梁の建設現場以外の工場等で、設計通りに正確に製造するものである。   In the present invention, first, the assembly-type bridge hollow floor slab unit 11 having the structure shown in FIG. 2 is manufactured accurately as designed at a factory other than the bridge construction site.
即ち、本発明に係る当該組立式橋梁用中空床版ユニット11は、図1に示す当該橋梁20の長手方向に沿った両側の端縁部をそれぞれ構成する部材であって、例えば、鉄筋6により中空状に形成された主桁部17と当該主桁部17に配置されている鉄筋群40と、当該主桁部17の側面に配置された当該主桁部17を構成する鉄筋6とは異なる鉄筋群6’と当該鉄筋群6’と当該主桁部17とを被覆し、当該鉄筋群6’との間に空間部30を形成している例えば鋼製材料からなる型枠9とで構成されており、当該型枠9には、補強鋼8が接合されている構成を有する組立式橋梁用中空床版ユニット11である。   That is, the assembling-type bridge hollow floor slab unit 11 according to the present invention is a member that constitutes both end edges along the longitudinal direction of the bridge 20 shown in FIG. The main girder part 17 formed in a hollow shape, the reinforcing bar group 40 arranged in the main girder part 17, and the reinforcing bar 6 constituting the main girder part 17 arranged on the side surface of the main girder part 17 are different. The rebar group 6 ′, the rebar group 6 ′, and the main girder portion 17 are covered, and the space 9 is formed between the rebar group 6 ′ and a mold 9 made of, for example, a steel material. The formwork 9 is an assembly-type bridge hollow floor slab unit 11 having a configuration in which a reinforcing steel 8 is joined.
又、本発明に於ける当該組立式橋梁用中空床版ユニット11の他の具体例としては、複数本の鉄筋6を含む中空状の硬性材料からなる長手方向に配置された主桁部17と当該主桁部17に配置されている鉄筋群40と、当該主桁部17の一方の側面から当該主桁部17の長手方向と直交する方向の側方に延展され、内部に当該主桁部17を構成する鉄筋6とは異なる複数本の鉄筋群6’を含む延展部33と、少なくとも当該主桁部17と当該延展部33との下面32を被覆している型枠9とを含み、且つ当該延展部33の内部若しくは当該延展部33と当該型枠9との間に空間部30が設けられている片持中空床版体部11で構成されているものであっても良い。   As another specific example of the assembly-type bridge hollow floor slab unit 11 in the present invention, a main girder portion 17 arranged in the longitudinal direction made of a hollow hard material including a plurality of reinforcing bars 6 is provided. The reinforcing bar group 40 arranged in the main girder part 17 and one side surface of the main girder part 17 are extended laterally in a direction perpendicular to the longitudinal direction of the main girder part 17 and the main girder part is internally provided. An extension part 33 including a plurality of reinforcing bar groups 6 ′ different from the reinforcing bar 6 constituting 17, and a mold 9 covering at least the main girder part 17 and the lower surface 32 of the extension part 33, Further, it may be configured by the cantilevered hollow floor plate body 11 in which the space portion 30 is provided in the extension portion 33 or between the extension portion 33 and the mold 9.
より詳細に説明するならば、当該組立式橋梁用中空床版ユニット11は、複数本の鉄筋6を含む中空状の硬性材料からなる長手方向に配置された主桁部17と当該主桁部17の一方の側面から当該主桁部17の長手方向と直交する方向の側方に延展された、内部に当該主桁部17を構成する鉄筋6とは異なる複数本の鉄筋群6’を含む延展部33であって、少なくとも一部の当鉄筋群6’が当該延展部33の上面31が略水平面を呈する様に配置されている延展部33と、当該主桁部17の下面から当該延展部33の下面32を被覆する型枠9とを含み、当該型枠9は、当該主桁部17の下面から当該延展部33の下面に沿って側方に延展するにつれて当該上面31との距離が短くなる様に設定された形状を呈しており、当該延展部33の内部に空間部30が形成されていると言う構成を有するものであっても良い。   More specifically, the assembling-type bridge hollow floor slab unit 11 includes a main girder portion 17 and a main girder portion 17 arranged in a longitudinal direction made of a hollow hard material including a plurality of reinforcing bars 6. An extension including a plurality of reinforcing bar groups 6 ′ extending from one side surface of the main girder part 17 in a direction orthogonal to the longitudinal direction of the main girder part 17 and different from the reinforcing bars 6 constituting the main girder part 17 therein. An extension portion 33 in which at least a part of the reinforcing bar group 6 ′ is arranged such that the upper surface 31 of the extension portion 33 exhibits a substantially horizontal plane, and the extension portion from the lower surface of the main girder portion 17. The mold 9 covers the lower surface 32 of the 33, and the distance from the upper surface 31 increases as the mold 9 extends laterally from the lower surface of the main girder portion 17 along the lower surface of the extended portion 33. It has a shape that is set to be shorter, It may have a structure called space portion 30 is formed on.
更に、具体的に例示するならば、本発明に於ける当該組立式橋梁用中空床版ユニット11は、1対の略同じ構成を有するが断面形状が互いに対象的に構成された組立式橋梁用中空床版ユニット11を使用するものであり、これが一つのキットとなる。   Further specifically, the hollow floor slab unit 11 for assembling bridges according to the present invention has a pair of substantially the same configuration, but is for an assembling bridge whose cross-sectional shapes are intended for each other. The hollow floor slab unit 11 is used, and this is one kit.
即ち、複数本の鉄筋6を含む中空状の硬性材料からなる長手方向に配置された主桁部17(図1及び図2でG3として示されている)と、当該鉄筋6とは異なり当該主桁部17内に配置されている鉄筋群40と、当該主桁部17の一方の側面から当該主桁部17の長手方向と直交する方向の側方に延展された、内部に当該主桁部17を構成する鉄筋6とは異なる複数本の鉄筋群6’を含む延展部33であって、少なくとも一部の当鉄筋群6’が当該延展部33の上面31と略水平面を呈する様に配置されている延展部33と、当該主桁部17の下面から当該延展部33の下面を被覆する型枠9とを含み、当該型枠9は、当該主桁部17の下面から当該延展部33の下面に沿って側方に延展するにつれて当該上面31との距離が短くなる様に設定された形状を呈しており、当該延展部33の内部に空間部が形成されている第1の片持中空床版体11−1と、複数本の鉄筋6を含む中空状の硬性材料からなる長手方向に配置された主桁部17と当該鉄筋6とは異なり当該主桁部17内に配置されている鉄筋群40と、当該第1の片持中空床版体11−1に於ける延展方向とは反対の方向に当該主桁部17の他方の側面から当該主桁部17の長手方向と直交する方向の側方に延展された、内部に当該主桁部17を構成する鉄筋6とは異なる複数本の鉄筋群6’を含む延展部33であって、少なくとも一部の当鉄筋群6’が当該延展部33の上面31と略水平面を呈する様に配置されている延展部33と、当該主桁部17の下面から当該延展部33の下面を被覆する型枠9とを含み、当該型枠9は、当該主桁部17の下面から当該延展部33の下面に沿って側方に延展するにつれて当該上面31との距離が短くなる様に設定された形状を呈しており、当該延展部33の内部に空間部30が形成されている第2の片持中空床版体部11−2とで構成された組立式橋梁用中空床版ユニット11である。   That is, unlike the reinforcing bar 6, the main girder part 17 (shown as G3 in FIGS. 1 and 2) arranged in the longitudinal direction made of a hollow hard material including a plurality of reinforcing bars 6 is different from the reinforcing bar 6. The reinforcing bar group 40 arranged in the girder part 17 and the main girder part extended from the one side surface of the main girder part 17 to the side in the direction perpendicular to the longitudinal direction of the main girder part 17. 17 is an extension part 33 including a plurality of reinforcing bar groups 6 ′ different from the reinforcing bar 6 constituting the member 17, and at least a part of the reinforcing bar group 6 ′ is arranged so as to exhibit a substantially horizontal plane with the upper surface 31 of the extension part 33. The extended part 33 and the mold 9 that covers the lower surface of the extended part 33 from the lower surface of the main girder part 17, and the extended frame 33 is formed from the lower surface of the main girder part 17. The distance from the upper surface 31 is shortened as it extends laterally along the lower surface. The first cantilever hollow floor slab 11-1 having a shape formed therein and having a space formed inside the extended portion 33 and a hollow hard material including a plurality of reinforcing bars 6. Unlike the main girder portion 17 arranged in the longitudinal direction and the rebar 6, the reinforcing bar group 40 arranged in the main girder portion 17 and the extension in the first cantilever hollow floor plate 11-1. A reinforcing bar 6 that constitutes the main girder part 17 in the inside, which is extended in a direction opposite to the direction from the other side surface of the main girder part 17 in a direction perpendicular to the longitudinal direction of the main girder part 17. Is an extension part 33 including a plurality of different reinforcing bar groups 6 ′, and at least a part of the reinforcing bar group 6 ′ is arranged so as to exhibit a substantially horizontal plane with the upper surface 31 of the extension part 33, A mold 9 that covers the lower surface of the extended portion 33 from the lower surface of the main girder portion 17, 9 has a shape set so that the distance from the upper surface 31 becomes shorter as it extends laterally along the lower surface of the extension part 33 from the lower surface of the main girder part 17. Is a hollow floor slab unit 11 for a built-in bridge composed of a second cantilever hollow floor slab body 11-2 in which a space 30 is formed.
本発明に於ける当該組立式橋梁用中空床版ユニット11の断面形状や長さ或は幅等の寸法等は、適宜に決定できるものであり、建設される橋梁の長さ及び幅に応じて任意に決定されるものである。   In the present invention, the cross-sectional shape, length, width, etc. of the assembly-type bridge hollow floor slab unit 11 can be determined as appropriate, depending on the length and width of the bridge to be constructed. It is determined arbitrarily.
此処で、本発明に於いて使用される当該組立式橋梁用中空床版ユニット11の構造を更に詳細に説明するならば、本発明に於いて使用される当該組立式橋梁用中空床版ユニット11のそれぞれの部材は、鋼製であることが望ましいもののプラスチック、セラミックス、アルミニウム、ステンレス、炭素繊維などの材質も状況によって選択することが可能である。   Here, if the structure of the assembly-type bridge hollow floor slab unit 11 used in the present invention is described in more detail, the assembly-type bridge hollow floor slab unit 11 used in the present invention. Although each member is preferably made of steel, materials such as plastic, ceramics, aluminum, stainless steel, and carbon fiber can be selected depending on the situation.
更に、当該組立式橋梁用中空床版ユニット11に於けるそれぞれの部材の構造の具体的な例が図7に示されており、図7から明らかな通り、当該主桁部17は、複数本の鉄筋6によって中空状に構成され、場合によっては、当該鉄筋6の外部を適宜の硬性を有する材料からなる板状体で被覆したものであっても良い。   Furthermore, a specific example of the structure of each member in the assembly-type bridge hollow floor slab unit 11 is shown in FIG. 7, and as is clear from FIG. The reinforcing bar 6 may be hollow, and in some cases, the outside of the reinforcing bar 6 may be covered with a plate-like body made of a material having appropriate hardness.
更に当該主桁部17の内部を構成する鉄筋6は、相互に対向する両端部が内側に湾曲している鉄筋が互いに空間を空けて対向して配置されると同時にそれぞれが隣接して並列的に配置されているものであっても良い。   Further, the reinforcing bars 6 constituting the inside of the main girder portion 17 are arranged in such a manner that the reinforcing bars whose opposite ends are curved inward are arranged facing each other with a space therebetween, and at the same time, they are adjacent to each other in parallel. It may be arranged in.
尚、当該鉄筋6の配列方向と直交して適宜の補強鉄筋40が挿入されていても良い。   An appropriate reinforcing bar 40 may be inserted perpendicular to the direction in which the reinforcing bars 6 are arranged.
一方、当該組立式橋梁用中空床版ユニット11の延展部33は、図示の通り、長手方向に並列的に例えば2段に配置された複数の鉄筋6’とそれに直交する方向で交差配置されている補助鉄筋41が挿入されている。   On the other hand, as shown in the figure, the extending portion 33 of the assembly-type bridge hollow floor slab unit 11 is arranged so as to intersect with a plurality of reinforcing bars 6 'arranged in two stages in parallel in the longitudinal direction in a direction perpendicular thereto. Auxiliary reinforcing bar 41 is inserted.
尚、本発明に於ける当該延展部33における当該空間部30は、当該延展部33を形成する鉄筋群6’間に形成されているものであってもよく、或は当該延展部33の当該鉄筋群6’と当該型枠9との間に形成されるものであっても良い。   In addition, the space portion 30 in the extension portion 33 according to the present invention may be formed between the reinforcing bar groups 6 ′ forming the extension portion 33, or the extension portion 33 may have the space portion 30. It may be formed between the reinforcing bar group 6 ′ and the mold 9.
そして、当該延展部33と当該主桁部17の上面には、適宜の本数の配力筋21が当該組立式橋梁用中空床版ユニット11の長手方向と直交する方向に配置されている事が望ましい。   In addition, on the upper surfaces of the extension part 33 and the main girder part 17, an appropriate number of distribution bars 21 are arranged in a direction orthogonal to the longitudinal direction of the assembly-type bridge hollow floor slab unit 11. desirable.
尚、当該組立式橋梁用中空床版ユニット11−1及び11−2における当該上面31は、水平面を構成することが望ましい。   In addition, as for the said upper surface 31 in the said assembly-type bridge hollow floor slab units 11-1 and 11-2, it is desirable to comprise a horizontal surface.
本発明に於いては、上記した構成を有する複数個の組立式橋梁用中空床版ユニット11が工場で製造されるものである。   In the present invention, a plurality of assembling-type bridge hollow floor slab units 11 having the above-described configuration are manufactured at a factory.
従って、本発明では、予め判っている橋梁全体の設計から、当該橋梁の長手方向の両端部に相当する部分を組立式橋梁用中空床版ユニット11として必要な個数を製造し、それらを橋梁の建設現場に搬入して橋台あるいは橋脚上に搭載せしめるものである。   Therefore, in the present invention, from the design of the entire bridge known in advance, a portion corresponding to both ends in the longitudinal direction of the bridge is manufactured as a required number as the assembly-type bridge hollow floor slab unit 11, and these are used as the bridges. It is brought into the construction site and mounted on the abutment or pier.
尚、図1或は図7における当該組立式橋梁用中空床版ユニット11の端部には、必要に応じて適宜の高さを有する後工程でコンクリートが注入される高欄3を設ける事も出来る。   1 or 7 can be provided with a balustrade 3 in which concrete is poured in a subsequent process having an appropriate height, if necessary, at the end of the assembly-type bridge hollow floor slab unit 11. .
又、本発明に於いては、当該型枠9の材質としては、鋼製のものを選択しているが、その他プラスチック、セラミックス、アルミニウム、ステンレス、炭素繊維などの材質も状況によって選択する事も可能である。   In the present invention, the material of the mold 9 is selected from steel, but other materials such as plastic, ceramics, aluminum, stainless steel, and carbon fiber may be selected depending on the situation. Is possible.
更にこの型枠9に補強鋼8を圧着することによって、コンクリートを流した時の重量によるたわみを防止する事が出来る。   Further, by crimping the reinforcing steel 8 to the mold 9, it is possible to prevent the deflection due to the weight when the concrete is poured.
尚、本発明に於ける当該第1の片持中空床版体11−1と当該第2の片持中空床版体11−2とは同一の設計として製造し、使用時に配置方向を逆にして使用するものであっても良い。   The first cantilevered hollow floor plate 11-1 and the second cantilevered hollow floor plate 11-2 in the present invention are manufactured as the same design, and the arrangement direction is reversed at the time of use. May be used.
次に、本発明に於いては、基本的には、橋梁の建設現場に於いて、所定の橋桁或は橋台上に上記した一対の組立式橋梁用中空床版ユニット11である当該第1及び第2の片持中空床版体11−1と11−2とを当該それぞれの片持中空床版体に含まれる当該主桁部17同士(つまり、図2に於いてはG1とG3に相当する)が相互に対向する様に配置してその対向する端部同士を適宜の結束装置を使用して結束して接続するものである。   Next, in the present invention, basically, the first and second hollow floor slab units 11 for an assembled bridge described above on a predetermined bridge girder or abutment at a bridge construction site. The second cantilever hollow floor slabs 11-1 and 11-2 are connected to the main girder portions 17 included in the respective cantilever hollow floor slabs (that is, corresponding to G1 and G3 in FIG. 2). Are arranged so as to face each other, and the opposite ends are bound and connected using an appropriate binding device.
本発明に於ける別の具体例としては、当該一対の組立式橋梁用中空床版ユニット11を対向配置する際に、当該組立式橋梁用中空床版ユニット11とは別途に形成した別の主桁部17’(前記した中間主桁12に相当する)或は適宜の中空断面形状を有する中間中空体部7の一つあるいは複数個をその間に介在させるものであってもよく、その双方を適宜混在した形で介在させたものであっても良い。   As another specific example of the present invention, when the pair of assembled bridge hollow floor slab units 11 are arranged to face each other, another main body formed separately from the assembled bridge hollow floor slab unit 11 is used. The girder portion 17 ′ (corresponding to the intermediate main girder 12 described above) or one or a plurality of intermediate hollow body portions 7 having an appropriate hollow cross-sectional shape may be interposed between them. It may be interposed in an appropriately mixed form.
即ち、図1の具体例では、当該一対の組立式橋梁用中空床版ユニット11との間に1個の別の主桁部17’と2個の中間中空部7とを混在させて配置した例が示されている。   That is, in the specific example of FIG. 1, one other main girder part 17 ′ and two intermediate hollow parts 7 are mixed and arranged between the pair of assembled bridge hollow floor slab units 11. An example is shown.
尚、本発明に於ける当該別の主桁部17の基本的な構成は、上記した主桁部17と同じ構造を有している事も望ましい。   In addition, it is desirable that the basic configuration of the other main beam portion 17 in the present invention has the same structure as the main beam portion 17 described above.
即ち、本発明に於ける当該組立式橋梁用中空床版1は、上記した個々の組立式橋梁用中空床版ユニット11を少なくとも2個使用するか、若しくは当該第1と第2の組立式橋梁用中空床版ユニット11を橋梁の建設現場に於いて、当該各ユニット11における当該主桁部17が互いに対向して並列して配置させると共にそれぞれの上面31が略水平となる様に互いに対向させる様に配列してその両者の相互に対向する端部同士を適宜の方法で接続した事を特徴とする組立式橋梁用中空床版1である。   That is, the assembling-type bridge hollow floor slab 1 according to the present invention uses at least two of the above-described individual assembling-type bridge hollow floor slab units 11, or the first and second assembling-type bridges. The hollow floor slab unit 11 is arranged at the bridge construction site so that the main girder portions 17 of the units 11 face each other and are arranged in parallel with each other so that the upper surfaces 31 are substantially horizontal. A hollow floor slab 1 for an assembled bridge characterized in that the ends facing each other are connected by an appropriate method.
そして、本発明の他の具体例では、少なくとも2個の当該組立式橋梁用中空床版ユニット11を対向させて隣接配列するに際し、複数本の鉄筋を含む中空状の硬性材料からなる別の主桁部17’が当該一対の組立式橋梁用中空床版ユニット11の間に追加されているか或は、当該対向する両主桁部17間に適宜の中空体部7が介在している組立式橋梁用中空床版である。   In another embodiment of the present invention, when at least two of the assembling-type bridge hollow floor slab units 11 face each other and are arranged adjacent to each other, another main material made of a hollow hard material including a plurality of reinforcing bars is used. A girder part 17 ′ is added between the pair of assembling-type bridge hollow floor slab units 11 or a suitable hollow body part 7 is interposed between the opposing main girder parts 17. It is a hollow floor slab for bridges.
尚、本発明に於ける当該組立式橋梁用中空床版1に有っては、当該間挿された当該中空体部7の上面には、当該一対の組立式橋梁用中空床版ユニットの上面31と略同一平面を形成する鉄筋6’を含む上面が配置形成され、且つ当該間挿された中空体部7の下面には、当該組立式橋梁用中空床版ユニット11を構成する1対の片持中空床版体のそれぞれの下面に配置されている型枠9と同じ素材で構成された型枠9’が配置されている事が望ましい。   In addition, in the assembly-type bridge hollow floor slab 1 according to the present invention, the upper surface of the pair of assembly-type bridge hollow floor slab units is provided on the upper surface of the inserted hollow body portion 7. An upper surface including a reinforcing bar 6 ′ that forms substantially the same plane as 31 is disposed and formed on the lower surface of the inserted hollow body portion 7. It is desirable that a mold 9 ′ made of the same material as that of the mold 9 disposed on the lower surface of each cantilevered hollow plate is disposed.
更に、本発明に於いては、当該型枠9内部の当該鉄筋6’により形成された空間部30内にコンクリート5が注入されている組立式橋梁用中空床版1が得られるのである。   Further, according to the present invention, the assembled bridge hollow floor slab 1 in which the concrete 5 is injected into the space 30 formed by the reinforcing bars 6 ′ inside the mold 9 is obtained.
次に、本発明に於ける中空床版橋梁の施工方法としては、例えば、上記した当該組立式橋梁用中空床版ユニット11を橋台上又は橋脚上に架設搭載させる工程と当該組立式橋梁用中空床版ユニットを一対ずつ相互に接続する工程と、当該組立てられた組立式橋梁用中空床版の空間領域内にコンクリートを注入する工程とから構成されている中空床版橋梁の施工方法である。   Next, as a method for constructing a hollow floor slab bridge in the present invention, for example, a step of installing the above-described assembly type hollow floor slab unit 11 on an abutment or a bridge pier and a step of the assembly type bridge hollow This is a construction method of a hollow floor slab bridge comprising a step of mutually connecting a pair of floor slab units and a step of injecting concrete into the space region of the assembled hollow floor slab for an assembled bridge.
以下に上記中空床版橋梁の施工方法の具体例を詳細に説明する。   A specific example of the construction method of the hollow floor slab bridge will be described in detail below.
当該中空床版橋梁の施工方法は、図3に示されている様に、支保工10をまず組み立てる。この工程は従来の中空床版橋建設方法と同様である。次に図2に示される本発明に係る当該組立式橋梁用中空床版ユニット11を工場で製作するが、図2或は図7に示すように片持ち部中空床版体11や、別の主桁部17’及び中間中空体部7をそれぞれ工場で製作する。   In the construction method of the hollow floor slab bridge, as shown in FIG. This process is the same as the conventional hollow floor slab bridge construction method. Next, the assembly type hollow floor slab unit 11 for a bridge according to the present invention shown in FIG. 2 is manufactured at the factory. As shown in FIG. 2 or FIG. The main girder portion 17 ′ and the intermediate hollow body portion 7 are each manufactured at the factory.
次に当該支保工10に工場で製作された組立式橋梁用中空床版ユニット11の部材を架設する。   Next, a member of the assembly-type bridge hollow floor slab unit 11 manufactured in the factory is installed on the support 10.
更に図1に示す様に、当該橋梁の幅に応じて、必要とされる当該別の主桁部17’及び中間中空体部7を適宜挿入して設置する。   Furthermore, as shown in FIG. 1, according to the width of the bridge, the other main girder portion 17 'and the intermediate hollow body portion 7 that are required are appropriately inserted and installed.
即ち図1で示すとおり、工場製作された組立式橋梁用中空床版ユニット11は、トラック等により現場まで運搬されて、クレーン等により順序正しく架設されてゆく。   That is, as shown in FIG. 1, the factory-fabricated hollow floor slab unit 11 for a bridge is transported to the site by a truck or the like and is erected in order by a crane or the like.
ただし、当該組立式橋梁用中空床版ユニット11を架設する以前の工程としては、橋台2及び橋脚3はもとより、支保工10が既に架設されていることが、前提となる。   However, it is assumed that the support work 10 has already been installed in addition to the abutment 2 and the pier 3 as a process before the assembly type hollow floor slab unit 11 is built.
さらに図2で、示すとおり、組立式橋梁用中空床版ユニット11は、所定の順序で、架設敷設された後に図1で示す配力筋21を挿入し主桁部17の鉄筋6及び片持ち部中空床版体11の延展部33に於ける別の鉄筋6’とを適宜の鉄線により結束する。   Further, as shown in FIG. 2, the assembling-type hollow floor slab unit 11 for bridges is constructed in a predetermined order and then laid and laid to insert the distribution bars 21 shown in FIG. The other reinforcing bars 6 ′ in the extended portion 33 of the hollow plate body 11 are bound by an appropriate iron wire.
これにより鉄筋コンクリートの主材である圧縮側、引張側の主部材である配筋が完了する。   This completes the bar arrangement, which is the main member on the compression side and the tension side, which is the main material of reinforced concrete.
配力筋21の緊結が完了すると、図8に示す様に、当該組立式橋梁用中空床版ユニット11の内部にコンクリートを流し込み養生期間を経て床版は、完成する。   When the binding of the distribution bars 21 is completed, as shown in FIG. 8, concrete is poured into the hollow floor slab unit 11 for assembling bridges, and the floor slab is completed after a curing period.
本発明における当該組立式橋梁用中空床版ユニット11の製作方法の他の具体例について説明する。図5は、当該組立式橋梁用中空床版ユニット11の1部を示したものである。型枠9には補強鋼8がリベットによって圧着固定される。   The other specific example of the manufacturing method of the said hollow plate unit 11 for assembling type bridges in this invention is demonstrated. FIG. 5 shows a part of the assembly-type bridge hollow floor slab unit 11. Reinforcing steel 8 is fixed to the mold 9 by rivets.
なお図5で示すとおり、型枠9と補強鋼8は工場で組立て製作されるが、この部材はコンクリート5が硬化した後も存置されるものとする。これは中空床版橋コンクリートを劣化保護するためのものである。   As shown in FIG. 5, the mold 9 and the reinforcing steel 8 are assembled and manufactured at the factory, but this member is assumed to remain after the concrete 5 is hardened. This is for deterioration protection of hollow floor slab bridge concrete.
その後、支保工10を解体撤去することにより、中空床版橋2が完成する。   Then, the hollow floor slab bridge 2 is completed by dismantling and removing the support work 10.
本発明において、最も特徴的であるものは、これまで中空床版橋の建設はすべての工程が、現場で施工されていたのもが、大部分の工程が工場製作されていることである。これによって、工期が大幅に縮減されることはもとより、鉄筋などの間隔、制度が向上することによって、耐久性の高い中空床版橋が出来るものである。   In the present invention, what is most characteristic is that the construction of the hollow floor slab bridge has so far been carried out on site, but most of the processes have been manufactured at the factory. As a result, the construction period can be greatly reduced, and the space and system of reinforcing bars can be improved, resulting in a highly durable hollow floor slab bridge.
更に、本発明に含まれる型枠9が、建設完了後も存置されることによって、コンクリートの風化による劣化を防ぐ役割をも持つものである。当該中空床版橋2に於いては、弱点と言われてきた表面劣化をこれにより防止した。   Furthermore, since the formwork 9 included in the present invention is left after the completion of construction, it also has a role of preventing deterioration due to weathering of concrete. In the hollow floor slab bridge 2, surface degradation, which has been said to be a weak point, was prevented by this.
又、本発明に係る当該組立中空床版体1内に打設されるコンクリートは、 当該組立式橋梁用中空床版ユニット11内に均一に打設されることが、望ましい。   Moreover, it is desirable that the concrete to be placed in the assembled hollow floor slab body 1 according to the present invention is uniformly placed in the assembly type hollow floor slab unit 11 for bridges.
又、本発明に係る組立式橋梁用中空床版ユニット11内に打設するコンクリートが、下部に漏れないことが望ましい。   In addition, it is desirable that the concrete to be placed in the hollow floor slab unit 11 for an assembled bridge according to the present invention does not leak to the lower part.
一方、本発明に係る当該組立式橋梁用中空床版ユニット11に於ける本体の長手方向の少なくとも一方の端部に、他の組立式橋梁用中空床版ユニット11の本体部の端部を接続連結固定させる固定部材が設けられている事が望ましい。   On the other hand, the end of the main body of the other assembly type hollow floor slab unit 11 is connected to at least one end of the main body of the assembly type hollow floor slab unit 11 according to the present invention. It is desirable that a fixing member for connecting and fixing is provided.
係る、固定部材の構造は特に限定されるものではないが、従来公知の連結手段を使用する事が可能である。   The structure of the fixing member is not particularly limited, but conventionally known connection means can be used.
次に本発明に係る当該床版の施工方法について図1を参照しながら説明する。先ず図2のとおりそれぞれの部材、組立中空床版体1を製造する工場或いは施工現場に於いて、複数個の組立中空床版体1をトラックなどに積載して現場に搬入し、クレーン等により組立式橋梁用中空床版ユニット11を1体ずつ順序正しく架設をする。   Next, the construction method of the floor slab according to the present invention will be described with reference to FIG. First, as shown in FIG. 2, in each factory, the factory or construction site where the assembled hollow floor slab 1 is manufactured, a plurality of assembled hollow floor slabs 1 are loaded onto a truck or the like and carried to the site. The assembly-type bridge hollow floor slab unit 11 is erected one by one in order.
組立式橋梁用中空床版ユニット11を数体敷設したところで、配力筋21を挿入し主桁鉄筋体17との交点を細い鉄線などにより緊結する。   When several assembly-type bridge hollow floor slab units 11 are laid, the distribution bars 21 are inserted and the intersections with the main girder reinforcing bars 17 are fastened by thin iron wires or the like.
上記作業を繰り返すことにより、床版の敷設が、完了し、コンクリートを最後に全体に打設することにより完成する。   By repeating the above work, laying of the floor slab is completed, and the concrete is finally put on the entire surface.
コンクリートが固化すると、コンクリート、組立式橋梁用中空床版ユニット11が一体化して、剛性構造となり、大きな剛性をもち、しかも中空床版橋に比べて高い剛性の中空床版橋2ができるので、従来の技術を使用した場合より耐久性が向上する。   When the concrete is solidified, the concrete and the assembly type hollow floor slab unit 11 are integrated into a rigid structure, which has a large rigidity, and a hollow floor slab bridge 2 having higher rigidity than the hollow floor slab bridge. Durability is improved compared to the case of using conventional technology.
また、組立中空床版体1の本体が床版の外壁を構成することになるので、コンクリート型枠を組んだり外したりする必要がない。   Further, since the main body of the assembled hollow floor slab 1 constitutes the outer wall of the floor slab, it is not necessary to assemble or remove the concrete formwork.
さらに、高欄3を建設する工程に関しては、外側の仮設材をまったく設けずに高欄3を完成することが可能となる。   Furthermore, regarding the process of constructing the handrail 3, it is possible to complete the handrail 3 without providing any temporary material outside.
即ち、本発明に於ける中空床版橋の施工方法としては、基本的には、上記した構成からなる当該組立中空床版体1を支保工や橋台上又は橋脚上、に敷設する工程及び当該組立中空床版体1の該空間領域内にコンクリートを注入する工程とから構成されているものであり、又他の態様としては、複数の当該組立式橋梁用中空床版ユニット11を一定の方向に直線的に配置隣接させ、それぞれの当該組立中空床版体の互いに隣接する端部同士を互いに連結する工程、当該連結された組立中空床版体を支保工、橋台又は橋脚上に架設搭載させる工程とから構成されている床版の施工方法である。   That is, as a construction method of the hollow floor slab bridge in the present invention, basically, a process of laying the assembled hollow floor slab body 1 having the above-described structure on a support work, an abutment or a pier, and And a step of injecting concrete into the space region of the assembled hollow floor slab 1, and as another aspect, a plurality of the hollow floor slab units 11 for assembling bridges are arranged in a certain direction. And connecting the adjacent end portions of each of the assembled hollow floor slabs to each other, and mounting the connected assembled hollow floor slab on a support, an abutment or a pier. It is a construction method of a floor slab composed of a process.
以上本発明の実施の形態について詳述してきたが、具体的な構成は、この実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲における設計の変更などがあっても本発明に含まれる。   Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. include.
以上のように本発明によれば、従来の中空床版橋は、全ての工程を現場で、製作する工法と違って、主要な構造物を全て、工場で行い、正確な製品を現場に搬入し、わずか、配力筋を挿入して結束するだけの工程を消化するだけで、コンクリート打設作業ができるので、工期は、早く労働力の縮減を提供できて、正確な中空床版橋を完成することができる。   As described above, according to the present invention, the conventional hollow floor slab bridge is different from the manufacturing method in which all processes are performed on site, and all the main structures are performed at the factory, and accurate products are brought into the site. However, it is possible to perform concrete placing work by simply digesting the process of inserting and binding the reinforcing bars, so that the work period can be reduced quickly and an accurate hollow floor slab bridge can be provided. Can be completed.
さらに、強度面に於いて従来の中空床版橋の最大の欠点であった、コンクリート表面の劣化を防止し、堅固な中空床版橋を完成することが可能になったことと、コスト面においては、資材の運搬作業や、施工作業を容易に行うことができるようになるので、工事費を大幅に低減することが可能となる。   Furthermore, in terms of strength, it has become possible to complete the solid hollow floor slab bridge, preventing the deterioration of the concrete surface, which was the biggest drawback of the conventional hollow floor slab bridge, and in terms of cost. Since material transportation work and construction work can be easily performed, construction costs can be greatly reduced.
本発明に係る当該組立式橋梁用中空床版ユニット、組立式橋梁用中空床版及び中空床版橋梁の施工方法は、橋梁の建設工事に有効に使用され、軽量化された合成床板構造体を使用することによって、低コストで作業効率が大幅に向上する施工方法として貢献するものである。   The hollow floor slab unit for assembling bridges according to the present invention, the hollow floor slab for assembling bridges, and the construction method of the hollow floor slab bridge are effectively used for bridge construction work, and a lightweight composite floor board structure is provided. By using it, it contributes as a construction method that greatly improves work efficiency at low cost.
1…組立式橋梁用中空床版ユニット
2…中空床版橋
3…高欄
4…主桁部
5…コンクリート
6…鉄筋
6’…別の鉄筋
7…中間中空部
8…補強鋼
9…型枠
10…支保工
11…組立式橋梁用中空床版ユニット、片持ち部中空床版体
12…中間主桁部
13…ポンプ車
15…橋脚
16…橋台
17…主桁部
17’…別の主桁部
18…木製型枠支保工
19…木製型枠
20…アスファルト舗装
21…配力筋
30…空間部
31…上面
32…下面
33…延展部
40…鉄筋
DESCRIPTION OF SYMBOLS 1 ... Hollow floor slab unit for assembling type bridges 2 ... Hollow floor slab bridge 3 ... Hand rail 4 ... Main girder part 5 ... Concrete 6 ... Reinforcement 6 '... Another reinforcement 7 ... Intermediate hollow part 8 ... Reinforcement steel 9 ... Formwork 10 ···················································································································································································································· 12 18 ... Wooden formwork support 19 ... Wooden formwork 20 ... Asphalt pavement 21 ... Power distribution bars 30 ... Space 31 ... Upper surface 32 ... Lower surface 33 ... Extension part 40 ... Reinforcing bar

Claims (14)

  1. 鉄筋により中空状に形成された主桁と当該主桁の側面に配置された当該主桁を構成する鉄筋とは異なる鉄筋群と当該鉄筋群と当該主桁とを被覆し、当該鉄筋群との間に空間部を形成している型枠とで構成されており、当該型枠には、補強鋼が接着されていることを特徴とする組立式橋梁用中空床版ユニット。   Covering the reinforcing bar group, the reinforcing bar group, and the main girder that are different from the reinforcing bar that constitutes the main girder that is formed hollow by the reinforcing bar and the main girder arranged on the side surface of the main girder, A hollow floor slab unit for a built-in bridge, characterized in that it is composed of a formwork that forms a space therebetween, and reinforcing steel is bonded to the formwork.
  2. 複数本の鉄筋を含む中空状の硬性材料からなる長手方向に配置された主桁部と当該主桁部の一方の側面から当該主桁部の長手方向と直交する方向の側方に延展され、内部に当該主桁部を構成する鉄筋とは異なる複数本の鉄筋群を含む延展部と、少なくとも当該主桁部と当該延展部との下面を被覆している型枠とを含み、且つ当該延展部の内部若しくは当該延展部と当該型枠との間に空間部が設けられている片持中空床版体部で構成された事を特徴とする組立式橋梁用中空床版ユニット。   A main girder portion arranged in a longitudinal direction made of a hollow hard material including a plurality of reinforcing bars and one side surface of the main girder portion is extended to the side in a direction perpendicular to the longitudinal direction of the main girder portion, An extension part including a plurality of reinforcing bar groups different from the reinforcing bars constituting the main girder part, and a formwork covering at least the lower surfaces of the main girder part and the extension part, and the extension A hollow floor slab unit for a built-in bridge characterized in that it is composed of a cantilevered hollow floor slab body part provided with a space part inside or between the extension part and the formwork.
  3. 複数本の鉄筋を含む中空状の硬性材料からなる長手方向に配置された主桁部と当該主桁部の一方の側面から当該主桁部の長手方向と直交する方向の側方に延展された、内部に当該主桁部を構成する鉄筋とは異なる複数本の鉄筋群を含む延展部であって、少なくとも一部の当鉄筋群が当該延展部の上面が略水平面を呈する様に配置されている延展部と、当該主桁部の下面から当該延展部の下面を被覆する型枠とを含み、当該型枠は、当該主桁部の下面から当該延展部の下面に沿って側方に延展するにつれて当該上面との距離が短くなる様に設定された形状を呈しており、当該延展部の内部に空間部が形成されている片持中空床版体部で構成された事を特徴とする請求項1又は2に記載の組立式橋梁用中空床版ユニット。   A main girder portion made of a hollow hard material including a plurality of rebars and arranged in the longitudinal direction and extended from one side surface of the main girder portion to a side in a direction perpendicular to the longitudinal direction of the main girder portion. An extension part including a plurality of reinforcing bar groups different from the reinforcing bars constituting the main girder part, wherein at least some of the reinforcing bar groups are arranged such that the upper surface of the extension part has a substantially horizontal plane. And a mold that covers the lower surface of the extension part from the lower surface of the main girder part, and the mold frame extends laterally from the lower surface of the main girder part along the lower surface of the extension part. As a result, it has a shape that is set so that the distance from the upper surface becomes shorter, and is characterized in that it is composed of a cantilevered hollow floor slab part in which a space part is formed inside the extension part. The hollow floor slab unit for a prefabricated bridge according to claim 1 or 2.
  4. 当該型枠には、補強鋼が設けられている事を特徴とする請求項1乃至3の何れかに記載の組立式橋梁用中空床版ユニット。   4. The hollow floor slab unit for a prefabricated bridge according to any one of claims 1 to 3, wherein the formwork is provided with reinforcing steel.
  5. 請求項1乃至4の何れかに記載された当該組立式橋梁用中空床版ユニットは、工場で形成されるものである事を特徴とする組立式橋梁用中空床版ユニット。   The said hollow floor slab unit for assembly-type bridges described in any one of Claims 1 thru | or 4 is formed in a factory, The hollow floor slab unit for assembly-type bridges characterized by the above-mentioned.
  6. 当該組立式橋梁用中空床版ユニットを構成する一対の片持中空床版体部に於けるそれぞれの延展部及び主桁部の上面に配置されている鉄筋群に配力筋が付加されている事を特徴とする請求項2乃至5の何れかに記載の組立式橋梁用中空床版ユニット。   A distribution bar is added to the reinforcing bar group arranged on the upper surface of each extension part and main girder part in the pair of cantilever hollow floor slab bodies constituting the hollow floor slab unit for the bridge. The hollow floor slab unit for a built-in bridge according to any one of claims 2 to 5, characterized in that:
  7. 請求項1乃至6の何れかに記載された当該組立式橋梁用中空床版ユニットを構成する少なくとも2個の片持中空床版体を工場内で、若しくは当該片持中空床版体部を橋梁の建設現場に於いて、当該各ユニットにおける当該主桁部が互いに対向して並列して配置させると共にそれぞれの上面が略水平となる様に互いに対向させる様に配列してその両者の相互に対向する端部同士を適宜の方法で接続した事を特徴とする組立式橋梁用中空床版。   7. At least two cantilever hollow floor slabs constituting the assembly-type bridge hollow floor slab unit according to any one of claims 1 to 6 in a factory or the cantilever hollow floor slab part as a bridge In the construction site, the main girder parts in each unit are arranged to face each other in parallel and arranged so that the upper surfaces thereof are substantially horizontal and face each other. Hollow floor slab for assembling bridges, characterized in that end portions to be connected are connected by an appropriate method.
  8. 請求項1乃至6の何れかに記載された少なくとも2個の当該組立式橋梁用中空床版ユニットを構成する当該片持中空床版体を対向させて隣接配列するに際し、複数本の鉄筋を含む中空状の硬性材料からなる別の主桁部が当該一対の組立式橋梁用中空床版ユニットの間に追加されている事を特徴とする請求項7に記載の組立式橋梁用中空床版。   A plurality of reinforcing bars are included when the cantilever hollow floor slabs constituting the at least two hollow floor slab units for assembling bridges according to any one of claims 1 to 6 are arranged adjacent to each other. 8. The hollow floor slab for a built-in bridge according to claim 7, wherein another main girder portion made of a hard rigid material is added between the pair of hollow floor slab units for a built-in bridge.
  9. 請求項1乃至6の何れかに記載された少なくとも2個の当該組立式橋梁用中空床版ユニットを構成する当該片持中空床版体を対向させて隣接配列するに際し、当該対向する両主桁部間に適宜の中空体部が介在している事を特徴とする請求項7に記載の組立式橋梁用中空床版。   When the cantilever hollow floor slabs constituting the at least two hollow floor slab units for assembling bridges according to any one of claims 1 to 6 are arranged to face each other, the opposing both main girders The hollow floor slab for assembling bridges according to claim 7, wherein an appropriate hollow body portion is interposed between the portions.
  10. 当該間挿された当該中空体部の上面には、当該一対の片持中空床版体の上面と略同一平面を形成する鉄筋を含む上面層が配置形成され、且つ当該間挿された中空体部の下面には、当該対の組立式橋梁用中空床版ユニットの下面に配置されている型枠を構成する素材と同じ素材で構成された型枠が配置されている事を特徴とする請求項10に記載の組立式橋梁用中空床版。   On the upper surface of the inserted hollow body portion, an upper surface layer including a reinforcing bar that forms substantially the same plane as the upper surfaces of the pair of cantilever hollow floor slabs is disposed, and the inserted hollow body Claims are characterized in that a formwork made of the same material as the material making up the formwork placed on the lower face of the pair of assembling bridge hollow floor slab units is arranged on the lower surface of the part. Item 11. A hollow floor slab for an assembly-type bridge according to Item 10.
  11. 当該一対の組立式橋梁用中空床版ユニットの当該対向する両主桁部間に複数個の適宜の中空体部を介在させると共に、当該複数個の中空体部の間に更に、別に構成された、複数本の鉄筋を含む中空状の硬性材料からなる別の主桁部が配置せしめられている事を特徴とする請求項7乃至10の何れか一項に記載の組立式橋梁用中空床版。   A plurality of appropriate hollow body portions are interposed between the opposing main girder portions of the pair of assembling bridge hollow floor slab units, and further configured separately between the plurality of hollow body portions. 11. The hollow floor slab for an assembly-type bridge according to any one of claims 7 to 10, wherein another main girder portion made of a hollow hard material including a plurality of reinforcing bars is arranged. .
  12. 当該一対の組立式橋梁用中空床版ユニットに於ける延展部及び主桁部を構成するそれぞれの上面に配置されている鉄筋群に配力筋が付加されている事を特徴とする請求項7乃至11の何れかに記載の組立式橋梁用中空床版。   8. A reinforcing bar is added to the reinforcing bar groups arranged on the upper surfaces of the extension part and the main girder part in the pair of hollow bridge slab units for assembling bridges, respectively. The hollow floor slab for assembling bridges according to any one of 11 to 11.
  13. 当該型枠内部の当該鉄筋により形成された空間部内にコンクリートが注入されている事を特徴とする請求項7乃至12の何れかに記載の組立式橋梁用中空床版。   The hollow floor slab for a prefabricated bridge according to any one of claims 7 to 12, wherein concrete is injected into a space formed by the reinforcing bar inside the formwork.
  14. 上記した請求項1乃至6の何れかに記載された当該組立式橋梁用中空床版ユニットを橋台上又は橋脚上に架設搭載させる工程と当該組立式橋梁用中空床版ユニットを一対ずつ相互に接続する工程と、当該組立てられた組立式橋梁用中空床版の空間領域内にコンクリートを注入する工程とから構成されている事を特徴とする中空床版橋梁の施工方法。   A step of installing the assembly type hollow floor slab unit according to any one of claims 1 to 6 on the abutment or pier and a pair of the assembly type hollow floor slab unit connected to each other one by one. And a step of injecting concrete into the space region of the assembled hollow floor slab for the assembled bridge.
JP2009203284A 2009-09-03 2009-09-03 Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge Ceased JP2009281141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009203284A JP2009281141A (en) 2009-09-03 2009-09-03 Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009203284A JP2009281141A (en) 2009-09-03 2009-09-03 Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2007053975A Division JP4391539B2 (en) 2007-03-05 2007-03-05 Hollow floor slab unit for assembling bridge, hollow floor slab for assembling bridge, and construction method of hollow floor slab bridge

Publications (1)

Publication Number Publication Date
JP2009281141A true JP2009281141A (en) 2009-12-03

Family

ID=41451868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009203284A Ceased JP2009281141A (en) 2009-09-03 2009-09-03 Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge

Country Status (1)

Country Link
JP (1) JP2009281141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104652250A (en) * 2015-02-04 2015-05-27 上海市政工程设计研究总院(集团)有限公司 Hollow slab beam and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008214959A (en) * 2007-03-05 2008-09-18 As Giken Kk Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method for hollow floor slab bridge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008214959A (en) * 2007-03-05 2008-09-18 As Giken Kk Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method for hollow floor slab bridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104652250A (en) * 2015-02-04 2015-05-27 上海市政工程设计研究总院(集团)有限公司 Hollow slab beam and preparation method thereof

Similar Documents

Publication Publication Date Title
KR101379305B1 (en) Wall structure manufacturing method using precast front wall panel and precast back wall panel
KR102000534B1 (en) Construction method using textile reinforcing panel of high durability for combined usage of permanent form
JP4391539B2 (en) Hollow floor slab unit for assembling bridge, hollow floor slab for assembling bridge, and construction method of hollow floor slab bridge
KR20150037786A (en) Rahmen Bridge PSC girder and construction method thereof
JP2013512132A (en) Factory for forming precast concrete panels for construction of wind generator support towers
KR20130141276A (en) Incremental launching apparatus for launching concrete slab for composite bridge using form of buried type
KR101214602B1 (en) Incremental launching apparatus for constructing rail-type concrete slab of composite bridge using shearing connector rail, and method for the same
KR20090068526A (en) Construction method of bridge structure and steel composite girder using the same
JP3973577B2 (en) Bridge, bridge structure and bridge construction method
KR100836079B1 (en) Structure of precast half slab-girder unit and method constructing the slab of a bridge with it
JP4035027B2 (en) Bridge girder structure and bridge girder construction method
KR20130141275A (en) Incremental launching apparatus for constructing shearing pocket-type concrete slab of composite bridge
JP5442421B2 (en) Half precast slab and slab construction method using the same
KR100903398B1 (en) Precast multi tee fiber and wiremesh slab
JP5184836B2 (en) Construction method of synthetic steel slab girder bridge
JP2009281141A (en) Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge
KR20130090709A (en) Construction method for corrugated steel plate web-psc composite beam
KR20100069847A (en) Precast steel-concrete composite girder and manufacturing method thereof
JP5937898B2 (en) Construction method of box girder bridge
KR101100694B1 (en) Cantilever for construction of bridge deck integrated with outer girder
JP3835716B2 (en) Reinforced concrete pier construction method
KR200353773Y1 (en) A construction system of the concret structure
JP6108595B2 (en) Ribbed precast concrete plate and method of placing concrete floor slab and beam using it
KR101223753B1 (en) Incremental launching apparatus for launching concrete slab of tunnel type for composite bridge, and constructing method for the same
KR101044469B1 (en) Combined projection beam and prestressed concrete girder

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090916

RD04 Notification of resignation of power of attorney

Effective date: 20110415

Free format text: JAPANESE INTERMEDIATE CODE: A7424

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20110628

A521 Written amendment

Effective date: 20110727

Free format text: JAPANESE INTERMEDIATE CODE: A523

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20111207

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111213

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120122

A01 Written decision to grant a patent or to grant a registration (utility model)

Effective date: 20120718

Free format text: JAPANESE INTERMEDIATE CODE: A01

A045 Written measure of dismissal of application

Free format text: JAPANESE INTERMEDIATE CODE: A045

Effective date: 20121204