JP7239356B2 - Concrete slab replacement method for highway bridges - Google Patents

Concrete slab replacement method for highway bridges Download PDF

Info

Publication number
JP7239356B2
JP7239356B2 JP2019045590A JP2019045590A JP7239356B2 JP 7239356 B2 JP7239356 B2 JP 7239356B2 JP 2019045590 A JP2019045590 A JP 2019045590A JP 2019045590 A JP2019045590 A JP 2019045590A JP 7239356 B2 JP7239356 B2 JP 7239356B2
Authority
JP
Japan
Prior art keywords
concrete
floorboard
balustrade
floor plate
wall
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.)
Active
Application number
JP2019045590A
Other languages
Japanese (ja)
Other versions
JP2020147973A (en
Inventor
寛規 田中
昭郎 志道
典生 植村
Original Assignee
株式会社ピーエス三菱
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 株式会社ピーエス三菱 filed Critical 株式会社ピーエス三菱
Priority to JP2019045590A priority Critical patent/JP7239356B2/en
Publication of JP2020147973A publication Critical patent/JP2020147973A/en
Application granted granted Critical
Publication of JP7239356B2 publication Critical patent/JP7239356B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure

Landscapes

  • Bridges Or Land Bridges (AREA)

Description

本発明は、道路橋のコンクリート床板を取り替えるコンクリート床板取替工法に関する。 TECHNICAL FIELD The present invention relates to a concrete floorboard replacement method for replacing a concrete floorboard of a highway bridge.

新設の橋梁工事は、杭打ち、ケーソン設置などの基礎工、橋台や橋脚の設置などの下部工、桁の設置などの上部工により主要な構造物が完成した後、地覆、高欄、舗装、歩道、排水の施工などの橋面工が行われる。一般的に、橋面工のなかでは、鉄筋コンクリート構造である地覆工が最も工期を要し、特に高欄が鉄筋コンクリート構造である壁高欄である場合には、型枠の設置、鉄筋の組み立て、コンクリート打設、養生、脱枠、仕上げなどの工程を要するために、より長期の工期が必要となる。 Construction of a new bridge consists of foundation work such as piling and caisson installation, substructure work such as abutment and pier installation, and superstructure work such as girder installation. Bridge surface work such as construction of sidewalks and drainage will be carried out. In general, the lining, which is a reinforced concrete structure, requires the longest construction period among the bridge surfacing works. A longer construction period is required due to the need for processes such as placing, curing, removing the frame, and finishing.

一方、供用中の道路橋の床板取替工事の大まかな流れは次のようになっている。
・交通規制
・旧コンクリート床板の撤去
・新コンクリート床板の敷設
・橋面工の施工
・交通規制解除
このように供用中の道路橋の床板取替工事期間中は道路の交通規制が強いられる。そのため、床版取替工事の全体工期において、特に大きな割合を占める橋面工の工期短縮は、交通規制に伴う道路渋滞による社会的損失を抑えるために重要な要請とされる。特に高速道路橋の場合、コンクリート構造である壁高欄が採用されていることが多く、壁高欄の急速施工技術が求められている。 On the other hand, the general flow of the work to replace the floorboards of road bridges in service is as follows.
・Traffic regulation ・Removal of old concrete floorboards ・Laying of new concrete floorboards ・Construction of bridge deck ・Release of traffic restrictions In this way, road traffic regulations will be enforced during the construction period for replacing the floorboards of road bridges in service. For this reason, shortening the construction period for bridge surface construction, which occupies a particularly large proportion of the total construction period for floor slab replacement work, is an important request in order to curb the social loss caused by traffic congestion. Especially in the case of expressway bridges, wall balustrades, which are concrete structures, are often used, and rapid construction technology for wall balustrades is required.

そこで、工場で、壁高欄部をプレキャストコンクリート部材として製造し、現場に搬送し床版側端部と接合して壁高欄を構築することにより工期短縮を図る工法（特許文献１参照）や、床版部と壁高欄部とを一体的に形成したプレキャストコンクリート部材を製造し、現場に搬送し、敷設する工法が知られている（特許文献２参照）。 Therefore, in a factory, the wall balustrade is manufactured as a precast concrete member, transported to the site, and joined to the floor slab side end to construct the wall balustrade, thereby shortening the construction period (see Patent Document 1). A construction method is known in which a precast concrete member in which a plate portion and a wall balustrade are integrally formed is manufactured, transported to a site, and laid (see Patent Document 2).

特開２０１６－１６０６９０号公報JP 2016-160690 A 特開２０１８－９１０６３号公報JP 2018-91063 A

しかしながら、従来のプレキャスト壁高欄の設置方法は、現地に既に敷設された床版上へのプレキャスト壁高欄の搬入、立設、位置合わせ、接合部へのコンクリート、モルタル等の打設、養生を行なう、というものであるため、現場打ちコンクリートによる構築方法よりも工期短縮が図れるとはいえ、一定期間の工期が必要であった。 However, the conventional method of installing precast wall balustrades involves carrying precast wall balustrades onto floor slabs that have already been laid on site, erecting them, aligning them, placing concrete or mortar at joints, and curing the balustrades. Therefore, although the construction period can be shortened compared to the construction method using cast-in-place concrete, a certain period of construction period was required.

また、現場における壁高欄設置の工期が全く必要ない床版部と壁高欄部とを一体化したプレキャストコンクリート部材を製造する場合には、壁高欄部を形成するための型枠の追加、下に凸の形状の製品を製造するための製作台の改造など、既存の製造設備に対して大掛かりな変更を余儀なくされるとともに、工場内に大きな設備スペースが必要となり、コスト増に繋がってしまう。 In addition, when manufacturing a precast concrete member that integrates the floor slab and the wall balustrade, which does not require any construction period for installing the wall balustrade on site, the formwork for forming the wall balustrade is added. Inevitably, large-scale changes to existing manufacturing equipment, such as remodeling of the production table for manufacturing convex-shaped products, are required, and a large equipment space is required in the factory, which leads to an increase in costs.

以上のような事情に鑑み、本発明の目的は、道路橋のコンクリート床板を取り替える工事の工期短縮が可能であり、道路の交通規制期間の短縮を図ることのできる道路橋のコンクリート床板取替工法を提供することにある。 SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a method for replacing a concrete floor plate of a highway bridge, which is capable of shortening the construction period for replacing the concrete floor plate of the highway bridge, and shortening the period of traffic regulation on the road. is to provide

上記目的を達成するため、本発明の一形態に係る道路橋のコンクリート床板取替工法は、取替位置を含む交通範囲の交通規制を行い、旧コンクリート床板に代えて、床板部分の上面端部に壁高欄が付設された新コンクリート床板を敷設する方法において、工場にて、前記新コンクリート床板の前記床板部にあたる平板状のプレキャストコンクリート部材を製造し、前記プレキャストコンクリート部材の上面端部に前記壁高欄を構築し、前記壁高欄が構築されたプレキャストコンクリート部材を前記取替位置に搬送し、敷設する。 In order to achieve the above object, a road bridge concrete floorboard replacement construction method according to one aspect of the present invention regulates traffic in a traffic range including a replacement position, and replaces the old concrete floorboard with the upper end of the floorboard portion In the method of laying a new concrete floorboard with a wall balustrade attached to it, in a factory, a flat plate-shaped precast concrete member corresponding to the floorboard portion of the new concrete floorboard is manufactured, and the wall is attached to the end of the upper surface of the precast concrete member. A balustrade is constructed, and the precast concrete member on which the wall balustrade is constructed is transported to the replacement position and laid.

前記プレキャストコンクリート部材はプレテンション方式プレストレスコンクリート部材であってよい。 The precast concrete member may be a pretensioned prestressed concrete member.

本発明に係る道路橋のコンクリート床板取替工法によれば、工場内で、新コンクリート床板の床板部にあたる平板状のプレキャストコンクリート部材を製造し、この平板状のプレキャストコンクリート部材に例えば場所打ちコンクリート構造またはプレキャストコンクリート構造などによる壁高欄部を構築することによって壁高欄付きコンクリート床板を製造し、これを取替位置に搬送し、新コンクリート床板として敷設することによって、取替位置に敷設された新コンクリート床板に壁高欄を構築する工法に比べ、全体工期を大幅に短縮することができ、交通規制による社会的影響を軽減できる。また、床板部と壁高欄が一体化されたプレテンション方式プレストレスコンクリート部材を製造し、搬送、敷設する方法に比べ、工場内の既存設備を大きく拡張するなどの変更が不要となり、コスト増とはならない。 According to the method for replacing a concrete floor plate of a highway bridge according to the present invention, a flat plate-shaped precast concrete member corresponding to the floor plate portion of the new concrete floor plate is manufactured in a factory, and the flat plate-shaped precast concrete member is provided with, for example, a cast-in-place concrete structure. Alternatively, by constructing the wall balustrade part with a precast concrete structure, etc., a concrete floorboard with a wall balustrade is manufactured, transported to the replacement position, and laid as a new concrete floorboard, and the new concrete laid at the replacement position Compared to the method of constructing wall balustrades on floorboards, the overall construction period can be significantly shortened, and the social impact of traffic regulations can be reduced. In addition, compared to the method of manufacturing, transporting, and laying pre-tensioned prestressed concrete members in which the floor plate and wall balustrade are integrated, there is no need to make changes such as greatly expanding the existing facilities in the factory, resulting in an increase in cost. should not.

本発明に係る道路橋のコンクリート床板取替工法において、前記プレキャストコンクリート部材への前記壁高欄の構築を１組毎に行い、前記壁高欄が構築されたプレキャストコンクリート部材を前記取替位置に搬送し、敷設してもよい。
平板状のプレキャストコンクリート部材への壁高欄部の構築を一体毎に行うことによって、壁高欄部用の型枠の転用が可能となり、コストの削減を見込める。また、プレキャストコンクリート部材への壁高欄部の構築が同一作業の繰り返しとなるため、作業の効率が上がる。 In the method for replacing a concrete floor plate of a road bridge according to the present invention, the wall balustrade is constructed on the precast concrete members for each set, and the precast concrete members with the wall balustrade constructed are transported to the replacement position. , may be laid.
By constructing the wall balustrade on a flat plate-shaped precast concrete member one by one, it is possible to reuse the formwork for the wall balustrade, and a cost reduction can be expected. In addition, since the construction of the wall balustrade on the precast concrete member is a repetition of the same work, work efficiency is improved.

本発明に係る道路橋のコンクリート床板取替工法において、前記プレキャストコンクリート部材への前記壁高欄の構築を複数枚まとめて行い、前記壁高欄が構築されたプレキャストコンクリート部材を一体ずつ分離して前記取替位置に搬送し、敷設してもよい。
コンクリート床板の取替位置の道路線形や勾配などの条件に合わせて敷き並べられた複数のプレキャストコンクリート部材あるいは取り替えるすべてのプレキャストコンクリート部材に壁高欄部をまとめて構築することによって、完成状態において天端の位置および高さの揃った誤差の少ない壁高欄形状を得ることができる。 In the method for replacing a concrete floor plate for a highway bridge according to the present invention, a plurality of wall balustrades are constructed on the precast concrete members at once, and the precast concrete members on which the wall balustrades are constructed are separated one by one and removed. It may be transported to a replacement position and laid.
By constructing the wall balustrade collectively on multiple precast concrete members laid out according to the conditions such as the road alignment and slope of the replacement position of the concrete floor plate, or on all the precast concrete members to be replaced, the crown in the completed state It is possible to obtain a wall balustrade shape with uniform positions and heights and little error.

本発明の一実施形態に係る道路橋のコンクリート床板取替工法の工程図である。It is a process chart of the concrete floor board replacement construction method of the road bridge which concerns on one Embodiment of this invention. 交通規制を示す平面図である。It is a top view which shows traffic regulation. 壁高欄付きコンクリート床板１を示す斜視図である。It is a perspective view which shows the concrete floorboard 1 with a wall balustrade. 本実施形態の道路橋のコンクリート床板取替工法における壁高欄付きコンクリート床板の製造方法を示す図である。It is a figure which shows the manufacturing method of the concrete floor board with a balustrade in the concrete floor board replacement construction method of the road bridge of this embodiment. プレキャストコンクリート構造の壁高欄部を示す断面図である。It is sectional drawing which shows the balustrade part of a precast concrete structure. 道路橋のコンクリート床板取替工法における壁高欄付きコンクリート床板の製造方法の変形例を示す図である。It is a figure which shows the modification of the manufacturing method of the concrete floorboard with a wall balustrade in the concrete floorboard replacement construction method of a highway bridge.

以下、図面を参照しながら、本発明の実施形態を説明する。
図１は本発明の一実施形態に係る道路橋のコンクリート床板取替工法におけるコンクリート床板取替現場での工程図である。
本実施形態の道路橋のコンクリート床板取替工法は、コンクリート床板の取替位置２（図２参照）を含む道路範囲の交通規制（Ａ）、取替対象のコンクリート床板である旧コンクリート床板の撤去（Ｂ）、新コンクリート床板の敷設（Ｃ）、橋面工の施工（Ｄ）、そして交通規制の解除（Ｅ）の順で行われる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a process diagram at a concrete floorboard replacement site in a road bridge concrete floorboard replacement construction method according to an embodiment of the present invention.
The road bridge concrete floorboard replacement method of this embodiment includes traffic control (A) in the road range including the concrete floorboard replacement position 2 (see FIG. 2), and removal of the old concrete floorboard, which is the concrete floorboard to be replaced. (B), laying of new concrete floorboards (C), construction of bridge deck (D), and lifting of traffic restrictions (E).

ここで、新コンクリート床板が壁高欄付きのコンクリート床板である場合、取替位置２に敷設された新コンクリート床板に鉄筋コンクリート構造の壁高欄を構築することが一般に行われるが、全体の工期を縮めて交通規制期間を短縮するために、本実施形態の工法では、工場または取替位置２近くの製作ヤードにて壁高欄付きのコンクリート床板を製造し、取替位置２に搬送して敷設する。 Here, if the new concrete floorboards are concrete floorboards with wall balustrades, it is common to build reinforced concrete wall balustrades on the new concrete floorboards laid at replacement position 2, but the overall construction period can be shortened. In order to shorten the period of traffic regulation, in the construction method of this embodiment, concrete floorboards with balustrades are manufactured at a factory or a manufacturing yard near replacement position 2, transported to replacement position 2, and laid.

（壁高欄付きコンクリート床板の概要）
図３は壁高欄付きコンクリート床板１を示す斜視図である。
壁高欄付きコンクリート床板１は、主に、平板状の床板部１１と、この床板部１１の一端部または両端部に付設された壁高欄部１２とで構成される。床板部１１は、例えば、プレテンション方式プレストレスコンクリート部材などであり、道路幅員方向に沿って配設された複数のＰＣ鋼材１９を有する。壁高欄部１２は、鉄筋コンクリート構造あるいはプレキャストコンクリート構造で構築される。 (Overview of concrete floorboards with wall balustrades)
FIG. 3 is a perspective view showing a concrete floorboard 1 with balustrades.
A concrete floorboard 1 with a balustrade is mainly composed of a flat plate-shaped floorboard portion 11 and a balustrade portion 12 attached to one or both ends of the floorboard portion 11 . The floor plate portion 11 is, for example, a pretension type prestressed concrete member or the like, and has a plurality of PC steel members 19 arranged along the road width direction. The wall balustrade 12 is constructed with a reinforced concrete structure or a precast concrete structure.

図３の例では、道路幅員方向に２つの壁高欄付きのコンクリート床板１が並べて敷設され、敷設後、２つの壁高欄付きのコンクリート床板１の床板部１１に道路幅員方向にプレストレスを導入することによって互いの接合端面１１ａ、１１ｂ同士が圧接された状態で一体化される。 In the example of FIG. 3, two concrete floorboards 1 with balustrades are laid side by side in the road width direction, and after laying, a prestress is introduced in the road width direction to the floorboard portion 11 of the two concrete floorboards 1 with balustrade. As a result, the joint end surfaces 11a and 11b are integrated with each other while being pressed against each other.

（壁高欄付きコンクリート床板の製造工程）
次に、壁高欄付きコンクリート床板１の製造工程を説明する。
図４は本実施形態の道路橋のコンクリート床板取替工法における、主に床板部１１の製作工程を示す図である。 (Manufacturing process of concrete floorboards with balustrades)
Next, the manufacturing process of the concrete floor slab 1 with balustrade will be described.
FIG. 4 is a diagram mainly showing the manufacturing process of the floor plate portion 11 in the concrete floor plate replacement construction method for a road bridge according to the present embodiment.

まず、プレテンション方式プレストレスコンクリートによる床板部１１を製造する。
例えば、工場内の製造台の両端部に設置されたアバット間にＰＣ鋼材を張設し、緊張を付与する。次に、型枠と鉄筋をそれぞれ組み立て、型枠内にコンクリートを打ち込み、養生期間を経てコンクリートの所定の強度が発現された後、ＰＣ鋼材の緊張を解放して、コンクリートにプレストレスを導入する。次に、型枠を外すとともに、不要なＰＣ鋼材を切断除去することによって、壁高欄付きコンクリート床板１のプレテンション方式プレストレスコンクリートによる床板部１１が完成する。 First, the floor plate portion 11 is manufactured using pretension type prestressed concrete.
For example, PC steel materials are stretched between abutments installed at both ends of a manufacturing table in a factory, and tension is applied. Next, the formwork and reinforcing bars are assembled, concrete is poured into the formwork, and after the specified strength of the concrete has been achieved through a curing period, the tension of the PC steel material is released and prestress is introduced into the concrete. . Next, the formwork is removed, and unnecessary PC steel materials are cut and removed to complete the floor plate portion 11 of the concrete floor plate 1 with balustrades made of pretension-type prestressed concrete.

続いて、工場２０内で、床板部１１に壁高欄部１２を構築する。
床板部１１に壁高欄部１２を構築する工程は、工場内で行っても良く、床板部１１を取替位置２近くの製作ヤードに搬送して行っても良い。
壁高欄部１２は、鉄筋コンクリートあるいはプレキャストコンクリートにより構築され得る。ここでは、プレキャストコンクリートにより構築される場合を想定して説明を続ける。 Subsequently, in the factory 20, the wall balustrade portion 12 is constructed on the floor plate portion 11. - 特許庁
The step of constructing the balustrade portion 12 on the floor plate portion 11 may be performed in the factory, or the floor plate portion 11 may be transported to a production yard near the replacement position 2 .
The wall balustrade 12 may be constructed of reinforced concrete or precast concrete. Here, the explanation will be continued assuming that it is constructed with precast concrete.

図５はプレキャストコンクリートによる壁高欄部１２を示す断面図である。
床板部１１の一端部の上面１１ｃには連続繊維補強材１３が直立に立設される。一方、別途製造されるプレキャストコンクリートによる壁高欄部１２用の壁材１５（以下、「プレキャストコンクリート壁材１５」と呼ぶ。）には床板部１１の一端部の上面１１ｃに立設された連続繊維補強材１３を個々に収容可能な貫通孔１４が設けられる。なお、連続繊維補強材１３には、例えば、炭素繊維、アラミド繊維及びガラス繊維の少なくともいずれか１つとエポキシ樹脂及びビニルエステル樹脂の少なくともいずれか１つを組み合せた複合材料が利用できる。連続繊維補強材１３は、鉄筋等の鋼材に比べ軽量で引張強度が高く、水分や塩分に対して優れた耐腐食性を有する。連続繊維補強材１３は、その表面に周囲の充填材との付着性を高めるための凹凸加工が施されたものであることがより好ましい。プレキャストコンクリート壁材１５は、自身の貫通孔１４に連続繊維補強材１３を収容するようにして立設され、各貫通孔１４内に高流動性、早強性を有するセメント系充填材１６が充填される。 FIG. 5 is a sectional view showing the balustrade 12 made of precast concrete.
A continuous fiber reinforcing member 13 is vertically erected on the upper surface 11c of one end of the floor plate portion 11 . On the other hand, the wall material 15 (hereinafter referred to as "precast concrete wall material 15") for the wall balustrade 12 made of precast concrete manufactured separately has continuous fibers erected on the upper surface 11c of one end of the floor plate portion 11. Through-holes 14 are provided in which stiffeners 13 can be accommodated individually. For the continuous fiber reinforcing member 13, for example, a composite material in which at least one of carbon fiber, aramid fiber and glass fiber is combined with at least one of epoxy resin and vinyl ester resin can be used. The continuous fiber reinforcing material 13 is lighter than steel materials such as reinforcing bars, has high tensile strength, and has excellent corrosion resistance against moisture and salt. It is more preferable that the surface of the continuous fiber reinforcing material 13 is subjected to uneven processing for enhancing adhesion to the surrounding filler. The precast concrete wall material 15 is erected so as to accommodate the continuous fiber reinforcing material 13 in its own through holes 14, and each through hole 14 is filled with a cement-based filler 16 having high fluidity and early strength. be done.

なお、運搬及び設置作業の効率化のため、プレキャストコンクリート壁材１５は、橋軸方向に例えば2mの長さのブロックの単位で製造され、厚さは例えば250mm、壁厚方向の貫通孔１４の間隔は貫通孔１４の中心軸間で例えば150mmである。なお、これらの寸法は一例に過ぎない。 In order to improve the efficiency of transportation and installation work, the precast concrete wall material 15 is manufactured in units of blocks with a length of, for example, 2 m in the direction of the bridge axis, and a thickness of, for example, 250 mm. The interval between the central axes of the through holes 14 is, for example, 150 mm. Note that these dimensions are only examples.

床板部１１とプレキャストコンクリート壁材１５との互いの接合面１１ｃ、１５ｂの間には、プレキャストコンクリート壁材１５の設置位置の微調整を可能とするために空隙１７が設けられており、微調整後にこの空隙１７に無収縮モルタルや樹脂接着剤などの充填材１８が充填される。以上により、壁高欄付きコンクリート床板１が完成する。 A gap 17 is provided between the joint surfaces 11c and 15b of the floor plate portion 11 and the precast concrete wall material 15 to enable fine adjustment of the installation position of the precast concrete wall material 15. The gap 17 is later filled with a filler 18 such as non-shrink mortar or resin adhesive. As described above, the concrete floor slab 1 with balustrade is completed.

以上のようにして工場２０内で製造された壁高欄付きコンクリート床板１は、取替位置２に搬送され（Ｆ）、敷設された後（Ｃ）、橋面工が行われ（Ｄ）、取替完了後、交通規制が解除される（Ｅ）。 The concrete floor slabs 1 with balustrades manufactured in the factory 20 as described above are transported to the replacement position 2 (F), laid (C), bridge surface work (D), and removed. After completion of the change, the traffic regulation is lifted (E).

以上のように、本実施形態の壁高欄付きコンクリート床板取替工法によれば、工場２０内で、プレテンション方式プレストレスコンクリート製の床板部１１を製造し、工場２０内または取替位置２近くの製作ヤードにてこの床板部１１に例えば鉄筋コンクリート構造またはプレキャストコンクリート構造などによる壁高欄部１２を構築することによって壁高欄付きコンクリート床板１を製造し、これを床板の取替位置２に搬送し、新コンクリート床板として敷設することによって、取替位置２に敷設された新コンクリート床板に壁高欄を構築する工法に比べ、全体工期を大幅に短縮することができ、交通規制による社会的影響を軽減できる。また、床板部と壁高欄が一体化されたプレテンション方式プレストレスコンクリート部材を製造し、搬送して敷設する工法に比べ、工場内の既存設備を大きく拡張するなどの変更が不要となり、コストを引き下げることができる。 As described above, according to the method for replacing concrete floorboards with balustrades of the present embodiment, the floorboard section 11 made of pretensioned prestressed concrete is manufactured in the factory 20 and placed in the factory 20 or near the replacement position 2. In the production yard of , a concrete floorboard 1 with a wall balustrade is manufactured by constructing a wall balustrade section 12 of, for example, a reinforced concrete structure or a precast concrete structure on the floorboard section 11, and is transported to a floorboard replacement position 2, By laying it as a new concrete floorboard, compared to the method of constructing the wall balustrade on the new concrete floorboard laid at replacement position 2, the overall construction period can be greatly shortened, and the social impact of traffic regulations can be reduced. . In addition, compared to the construction method that manufactures pretensioned prestressed concrete members that integrate the floorboards and wall balustrades, transports and lays them, there is no need to make changes such as greatly expanding the existing facilities in the factory, and costs are reduced. can be pulled down.

工場２０内または取替位置２近くの製作ヤードでの床板部１１への壁高欄部１２の構築は、床板部１１一体毎に行ってもよく、あるいは後で変形例で説明するように、複数の床板部１１に対してまとめて行ってもよい。床板部１１への壁高欄部１２の構築を一体の床板部１１毎に行う場合には、壁高欄部１２の構築用の型枠の転用が可能となるので、コストの削減を見込める。また、床板部１１への壁高欄部１２の構築は同一作業の繰り返しとなるため、作業の効率が上がるという利点がある。 The construction of the wall balustrade 12 on the floorboard 11 in the factory 20 or in the production yard near the replacement position 2 may be performed for each floorboard 11 or, as will be explained later in the modified example, in multiple ways. may be performed collectively for the floor plate portion 11 of the above. When the wall balustrade 12 is constructed on the floor plate 11 for each integral floor plate 11, the formwork for constructing the wall balustrade 12 can be diverted, so cost reduction can be expected. In addition, since the construction of the balustrade 12 on the floor board 11 requires repetition of the same work, there is an advantage that the work efficiency is improved.

また、壁高欄部１２はプレキャストコンクリート壁材１５を用いて構築される場合を主に説明したが、鉄筋コンクリートにより構築されてもよい。鉄筋コンクリートで壁高欄部１２を構築する方法はプレキャストコンクリート壁材を用いた方法に比べ長い工期を要するが、工場２０内での工程であるため、その影響が交通規制期間に及ぶことがない。 Moreover, although the case where the wall balustrade part 12 was constructed using the precast concrete wall material 15 was mainly demonstrated, you may construct|construct with a reinforced concrete. The method of constructing the wall balustrade 12 with reinforced concrete requires a longer construction period than the method of using precast concrete wall material, but since it is a process in the factory 20, the influence does not extend to the traffic regulation period.

次に、本発明に係る道路橋のコンクリート床板取替工法の変形例を説明する。
図６は本変形例の道路橋のコンクリート床板取替工法を示す図である。 Next, a modified example of the method for replacing the concrete floor plate of a road bridge according to the present invention will be described.
FIG. 6 is a diagram showing a method for replacing a concrete floor plate of a road bridge according to this modification.

本工法は、工場で平板状の床板部１１を製作した後、工場あるいは現場近くの製造ヤードにおいて、複数の床板部１１に対して壁高欄部１２の構築をまとめて行い、壁高欄部１２が設けられた床板部１１を一体ずつ分離して取替位置２に搬送し、敷設する方法である。 In this construction method, after manufacturing flat plate-shaped floorboards 11 in a factory, wall railings 12 are collectively constructed for a plurality of floorboards 11 in a factory or in a manufacturing yard near the site, and wall railings 12 are constructed. In this method, the provided floor plate portions 11 are separated one by one, transported to the replacement position 2, and laid.

この工法によれば、工場あるいは現場近くの製造ヤードにおいて、コンクリート床板の取替位置２の道路線形や勾配などの条件を再現した状態で複数の床板部１１あるいは取り替えるすべての床板部１１を敷き並べ、敷き並べられた複数の床板部１１あるいは取り替えるすべての床板部１１に壁高欄部１２をまとめて構築することによって、完成状態において天端の位置および高さの揃った誤差の少ない壁高欄形状を得ることができる。 According to this construction method, in a factory or a manufacturing yard near the site, a plurality of floorboards 11 or all the floorboards 11 to be replaced are laid out in a state that reproduces conditions such as the road alignment and slope at the replacement position 2 of the concrete floorboards. By collectively constructing the wall balustrade sections 12 on a plurality of floorboard sections 11 laid out side by side or on all the floorboard sections 11 to be replaced, a wall balustrade shape in which the positions and heights of the top ends are uniform in the completed state and there is little error. Obtainable.

なお、上記の実施形態では、壁高欄付きコンクリート床板１の床板部１１がプレテンション方式プレストレスコンクリートであることとしたが、本発明はこれに限定されるものではなく、プレキャストコンクリートであってもよい。 In the above embodiment, the floorboard portion 11 of the concrete floorboard with balustrade 1 is pretensioned prestressed concrete, but the present invention is not limited to this, and may be precast concrete. good.

１…壁高欄付きコンクリート床板
１１…床板部
１２…壁高欄部
２０…工場 DESCRIPTION OF SYMBOLS 1... Concrete floor board with a wall balustrade 11... Floor board part 12... Wall balustrade part 20... Factory

Claims (2)

取替位置を含む交通範囲の交通規制を行い、旧コンクリート床板に代えて、床板部分の上面端部に壁高欄が付設された新コンクリート床板を敷設する方法において、
工場において、前記新コンクリート床板の前記床板部にあたる平板状のプレキャストコンクリート部材を製造し、
当該工場あるいは現場近くのヤードにおいて、前記取替位置の少なくとも道路線形及び勾配に合わせて、車線方向に連続する複数の前記平板状のプレキャストコンクリート部材を敷き並べ、この敷き並べられた複数のプレキャストコンクリート部材の上面端部に前記壁高欄をまとめて構築し、
前記壁高欄が構築されたプレキャストコンクリート部材を一体ずつ分離して前記取替位置に搬送し、敷設する
道路橋のコンクリート床板取替工法。 In the method of regulating traffic in the traffic range including the replacement position, and replacing the old concrete floorboard with a new concrete floorboard with a balustrade attached to the end of the upper surface of the floorboard,
In a factory, a flat plate-shaped precast concrete member corresponding to the floor plate portion of the new concrete floor plate is manufactured,
In a yard near the factory or site, a plurality of flat plate-shaped precast concrete members are laid out in line with at least the alignment and slope of the road at the replacement position, and the plurality of precast concrete members laid out are laid out side by side. The balustrade is collectively constructed at the top end of the member,
A concrete floor board replacement method for a highway bridge, wherein the precast concrete members on which the wall balustrades are constructed are separated one by one, conveyed to the replacement position, and laid. 請求項１に記載の道路橋のコンクリート床板取替工法であって、
前記床板部にあたる平板状のプレキャストコンクリート部材が、プレテンション方式プレストレスコンクリート部材である
道路橋のコンクリート床板取替工法。 The method for replacing the concrete floor plate of the road bridge according to claim 1,
A concrete floor plate replacement construction method for a highway bridge, wherein the flat plate-shaped precast concrete member corresponding to the floor plate portion is a pretension type prestress concrete member.
JP2019045590A 2019-03-13 2019-03-13 Concrete slab replacement method for highway bridges Active JP7239356B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019045590A JP7239356B2 (en) 2019-03-13 2019-03-13 Concrete slab replacement method for highway bridges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019045590A JP7239356B2 (en) 2019-03-13 2019-03-13 Concrete slab replacement method for highway bridges

Publications (2)

Publication Number Publication Date
JP2020147973A JP2020147973A (en) 2020-09-17
JP7239356B2 true JP7239356B2 (en) 2023-03-14

Family

ID=72429214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019045590A Active JP7239356B2 (en) 2019-03-13 2019-03-13 Concrete slab replacement method for highway bridges

Country Status (1)

Country Link
JP (1) JP7239356B2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007066387A1 (en) 2005-12-06 2007-06-14 Kawada Industries, Inc. Bridge construction method
JP2015025330A (en) 2013-07-29 2015-02-05 横河工事株式会社 Lightweight floor slab, lightweight floor slab construction method, and lightweight floor slab connection structure
JP2015148110A (en) 2014-02-07 2015-08-20 株式会社Ｉｈｉインフラシステム Apparatus and method for manufacturing precast floor slab
JP2017008671A (en) 2015-06-25 2017-01-12 三井住友建設株式会社 Precast bridge component
JP2018091063A (en) 2016-12-05 2018-06-14 鹿島建設株式会社 Precast member manufacturing method and precast member
JP2019031838A (en) 2017-08-08 2019-02-28 大林道路株式会社 Waterproof drainage structure for road bridge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349841A (en) * 1976-10-16 1978-05-06 Oriental Concrete Co Method of rapid execution of bridge by means of preetension girder
JPH03111610U (en) * 1990-03-01 1991-11-15

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007066387A1 (en) 2005-12-06 2007-06-14 Kawada Industries, Inc. Bridge construction method
JP2015025330A (en) 2013-07-29 2015-02-05 横河工事株式会社 Lightweight floor slab, lightweight floor slab construction method, and lightweight floor slab connection structure
JP2015148110A (en) 2014-02-07 2015-08-20 株式会社Ｉｈｉインフラシステム Apparatus and method for manufacturing precast floor slab
JP2017008671A (en) 2015-06-25 2017-01-12 三井住友建設株式会社 Precast bridge component
JP2018091063A (en) 2016-12-05 2018-06-14 鹿島建設株式会社 Precast member manufacturing method and precast member
JP2019031838A (en) 2017-08-08 2019-02-28 大林道路株式会社 Waterproof drainage structure for road bridge

Also Published As

Publication number Publication date
JP2020147973A (en) 2020-09-17

Similar Documents

Publication Publication Date Title
JP5266291B2 (en) Construction method of bridge deck and joint structure of precast deck
US7197854B2 (en) Prestressed or post-tension composite structural system
JP6837343B2 (en) Floor slab replacement method for synthetic girders
CN105839510A (en) Steel-ultra-high-performance concrete combined continuous beam bridge structure and construction method thereof
KR101107826B1 (en) Slab-type box girder made by precast concrete and method constructing the bridge therewith
KR100836079B1 (en) Structure of precast half slab-girder unit and method constructing the slab of a bridge with it
JP2017172143A (en) Junction structure of precast concrete floor slab for rapid construction work, and construction method of the same
JP2006022595A (en) Main pilot girder, main girder structure for erection of box girder bridge and erection method of the box girder bridge
KR101703798B1 (en) Prestressed Concrete Beam with curve implementation possible connection structure and Constructing Method thereof
CN102808375B (en) Hinge structure of steel pier column of portal frame platform bridge and bearing platform and construction method thereof
KR101270947B1 (en) Deck repairing construction method of bridge using precast concrete slab
JP7239356B2 (en) Concrete slab replacement method for highway bridges
JP6889010B2 (en) Bridge construction method
JP4035027B2 (en) Bridge girder structure and bridge girder construction method
EP1065316A1 (en) Composite steel-concrete bridge- or walk way structure, especially bridge with double composite beams under the deck
JP7306053B2 (en) Joint structure of precast floor slab and construction method of joint
JP6066981B2 (en) Connection structure in bridges using reinforced concrete slabs and connection method in existing bridges using reinforced concrete slabs
KR101650856B1 (en) Partial slab integrated I-shaped girder and bridge construction method using the same
CN110820512B (en) Plate-girder transverse connecting device and construction method thereof
KR100730018B1 (en) Prestressed steel-concrete composite and method for constructing the same
JPH023843B2 (en)
CN211142798U (en) Plate-beam connecting assembly
KR102501064B1 (en) A temporary bridge structure, a temporary bridge including the same, and a temporary bridge construction method using the same
JP7452284B2 (en) Floor slab replacement method
JP2019124051A (en) Erection method of bridge girder

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20211118

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20211118

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220826

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220906

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221107

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20221213

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230130

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230302

R150 Certificate of patent or registration of utility model

Ref document number: 7239356

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350