JP4954859B2 - Temporary restoration method following removal of bridge expansion and contraction device - Google Patents
Temporary restoration method following removal of bridge expansion and contraction device Download PDFInfo
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- 238000010276 construction Methods 0.000 claims description 6
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- 229910000831 Steel Inorganic materials 0.000 description 4
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Description
本発明は、橋梁伸縮装置の撤去に伴う仮復旧工法に関する。 The present invention relates to a temporary restoration method associated with removal of a bridge expansion / contraction device.
橋梁には、温度変化などに伴う橋梁構成部材の膨張収縮を吸収することを目的として、伸縮装置が設けられている。このような橋梁伸縮装置は、設置される橋梁に応じて、種々の規模や型式のものがある。一方、橋梁伸縮装置は、破損したり経年変化により老朽化したりして、新しい伸縮装置に交換する必要が生ずる場合がある。 The bridge is provided with an expansion / contraction device for the purpose of absorbing expansion and contraction of the bridge constituent member due to a temperature change or the like. Such bridge expansion and contraction devices have various scales and types depending on the installed bridge. On the other hand, the bridge expansion / contraction device may be damaged or aged due to aging, and may need to be replaced with a new expansion / contraction device.
しかしながら、橋梁伸縮装置を交換しようとすると、当該箇所の通行を規制しなければならないという不都合がある。特に、大規模な伸縮装置の場合には、装置の交換に相当の日数を要するため、車両の通行に多大の影響を及ぼす事態となる。また、大規模な装置の交換には多額の費用がかかるため、取り敢えず破損した装置を取り除き、後日(例えば、翌年度)に新しい装置を設置するような場合も生じ得るが、このような場合には、装置を除去した箇所に応急措置を施さなければならない。 However, if the bridge telescopic device is to be replaced, there is an inconvenience that the passage of the part must be restricted. In particular, in the case of a large-scale expansion / contraction device, since it takes a considerable number of days to replace the device, this greatly affects the passage of the vehicle. In addition, since it takes a large amount of money to replace a large-scale device, it may happen that the damaged device is removed and a new device is installed at a later date (for example, the following year). First-aid measures must be taken where the device is removed.
本発明は、このような状況に鑑みて開発されたものであって、橋梁伸縮装置を撤去する際に、比較的容易にかつ低コストで撤去箇所を復旧することができる、橋梁伸縮装置の撤去に伴う仮復旧工法を提供することを目的としている。 The present invention was developed in view of such a situation, and when removing the bridge expansion and contraction device, the removal of the bridge expansion and contraction device can be restored relatively easily and at low cost. The purpose is to provide a temporary restoration method.
本願請求項1に記載の橋梁伸縮装置の撤去に伴う仮復旧工法は、撤去しようとする伸縮装置が位置する部分およびその周囲の部分の舗装を取り除く工程と、舗装を取り除いた部分の伸縮装置を切断して地上に取り出す工程と、舗装および伸縮装置を撤去した箇所に覆工板を設置する工程と、前記覆工板を設置した箇所の橋梁内部の桁の適所に継手部材を固定する工程と、前記覆工板と前記継手部材とをワイヤで連結し、ワイヤを緊張させる工程と、前記覆工板の周囲および覆工板の上に舗装材を敷設する工程とを含むことを特徴とするものである。 The temporary restoration method associated with the removal of the bridge expansion / contraction device according to claim 1 includes a step of removing the pavement of the portion where the expansion device to be removed and the surrounding portion are removed, and the expansion device of the portion where the pavement is removed. A step of cutting and taking out to the ground, a step of installing a lining plate at a place where the pavement and the expansion / contraction device have been removed, and a step of fixing a joint member at an appropriate position of a girder inside the bridge where the lining plate is installed; And a step of connecting the lining plate and the joint member with a wire and tensioning the wire, and a step of laying a paving material around and on the lining plate. Is.
本願請求項2に記載の橋梁伸縮装置の撤去に伴う仮復旧工法は、前記請求項1の工法において、橋梁構成部材の膨張収縮を吸収するため、前記覆工板の一方の端に隙間が設けられていることを特徴とするものである。 The temporary restoration method associated with the removal of the bridge expansion / contraction device according to claim 2 of the present application is the construction method of claim 1, wherein a gap is provided at one end of the lining plate in order to absorb the expansion and contraction of the bridge constituting member. It is characterized by being.
本発明によれば、橋梁伸縮装置の撤去に伴う仮復旧を、比較的短時間に容易かつ低コストで実施することができる。本発明の方法では、覆工板が橋梁内部の桁に堅固に固定されているため、所定の通行荷重に耐えることができる。また、覆工板の一方の端に隙間を設けることにより、橋梁構成部材の膨張収縮にも応急的に対処することができる。 ADVANTAGE OF THE INVENTION According to this invention, temporary restoration accompanying removal of a bridge expansion-contraction apparatus can be implemented easily and at low cost for a comparatively short time. In the method of the present invention, since the lining plate is firmly fixed to the girder inside the bridge, it can withstand a predetermined traffic load. Further, by providing a gap at one end of the lining plate, it is possible to cope with the expansion and contraction of the bridge constituent member as soon as possible.
次に図面を参照して、本発明の好ましい実施の形態に係る仮復旧工法について詳細に説明する。図1は、本発明の好ましい実施の形態に係る仮復旧工法が実施される伸縮装置の外観を概略的に示した斜視図、図2は、本発明の仮復旧工法の手順を示した一連の図である。 Next, with reference to the drawings, a temporary restoration method according to a preferred embodiment of the present invention will be described in detail. FIG. 1 is a perspective view schematically showing the external appearance of a telescopic device in which a temporary restoration method according to a preferred embodiment of the present invention is carried out, and FIG. FIG.
まず最初に、撤去しようとする伸縮装置が位置する部分およびその周囲の部分の舗装を取り除く(図2(a)参照)。具体的には、カッタを使用して舗装に切り込みを入れ、舗装の当該部分を取り除く。伸縮装置は、図1に示されるように、橋軸と直交方向に延びているが、伸縮装置全体を一度に撤去しようとすると多大の作業時間がかかるので、伸縮装置全体を一度に撤去するのではなく、所定幅毎に撤去作業を実施するのが好ましい(図1の破線参照)。 First, the pavement is removed from the portion where the telescopic device to be removed is located and the surrounding portion (see FIG. 2A). Specifically, a cutter is used to make a cut in the pavement and remove that portion of the pavement. As shown in FIG. 1, the telescopic device extends in a direction orthogonal to the bridge axis. However, since it takes a lot of work time to remove the entire telescopic device at once, the entire telescopic device is removed at a time. Instead, it is preferable to carry out the removal work for each predetermined width (see the broken line in FIG. 1).
次いで、舗装を取り除いた部分の伸縮装置を切断し、切断した伸縮装置を地上に取り出して撤去する。伸縮装置の撤去に際して、橋梁内部(舗装下部)に位置する型鋼部材が緩衝する場合には、当該型鋼を切断する。 Subsequently, the expansion device of the part from which the pavement is removed is cut, and the cut expansion device is taken out and removed on the ground. When removing a telescopic device, when a steel mold member located inside the bridge (pavement lower part) cushions, the steel mold is cut.
次いで、舗装および伸縮装置を撤去した箇所に覆工板を仮置きする(図2(b)参照)。ここで、覆工板には、1枚の鋼板の他、鋼製プレートを組み立てることによって形成される覆工桁も含まれる。覆工板の仮置きに先立って、覆工板の設置箇所を清掃し、不陸調整などを行うのが望ましい。なお、覆工板は、設置箇所の通行荷重に耐えることができるように設計されている。 Next, a lining board is temporarily placed on the place where the pavement and the expansion / contraction device are removed (see FIG. 2B). Here, the lining plate includes a lining girder formed by assembling a steel plate in addition to a single steel plate. Prior to the temporary placement of the lining plate, it is desirable to clean the place where the lining plate is installed and adjust the unevenness. In addition, the lining board is designed so that it can endure the traffic load of the installation location.
次いで、覆工板を設置しようとする箇所の橋梁内部の桁の適所(例えば、箱桁下フランジなど)に、継手部材をボルト等で固定する(図3(c)参照)。一方、覆工板の下面にも、予め継手部材が固定されている。なお、継手部材は、通常のものを使用してよい。 Next, the joint member is fixed with a bolt or the like at an appropriate position (for example, a box girder lower flange) inside the bridge where the lining plate is to be installed (see FIG. 3C). On the other hand, a joint member is also fixed to the lower surface of the lining plate in advance. In addition, you may use a normal joint member.
次いで、覆工板の継手部材と桁の適所に設置した継手部材とをワイヤで連結する(図3(d)参照)。その際、レバーブロックなどを使用してワイヤを緊張させ、緊張させたワイヤをワイヤクリップで固定するのが好ましい。 Subsequently, the joint member of the lining plate and the joint member installed at an appropriate position of the girder are connected by a wire (see FIG. 3D). At that time, it is preferable to use a lever block or the like to tension the wire and fix the tensioned wire with a wire clip.
最後に、覆工板の周囲に擦り付け舗装を施すとともに、覆工板の上に舗装材を敷設して、当該箇所に関する工事が完了する(図3(e)参照)。 Finally, the pavement is rubbed around the lining plate, and a pavement material is laid on the lining plate to complete the construction relating to the location (see FIG. 3 (e)).
以上の工程を伸縮装置に沿って適当な幅で繰り返して実施することにより、仮復旧工事が行われる。 The temporary restoration work is performed by repeatedly performing the above steps along the expansion device with an appropriate width.
なお、仮復旧工事が行われてから本復旧工事(新しい伸縮装置を設置する工事)が実施されるまでの間に長期間要する場合もあるので、図4に示されるように、覆工板の一方の端に隙間を設け、橋梁構成部材の膨張収縮を吸収することができるようにするのが好ましい。 In some cases, it may take a long time from the temporary restoration work to the actual restoration work (the work to install a new telescopic device). It is preferable to provide a gap at one end so that the expansion and contraction of the bridge component can be absorbed.
本発明は、以上の発明の実施の形態に限定されることなく、特許請求の範囲に記載された発明の範囲内で、種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。 The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.
たとえば、前記実施の形態では、覆工板が一枚の板又は桁で形成されているが、通行荷重によっては、覆工板を2枚重ねて使用してもよい。 For example, in the above-described embodiment, the lining plate is formed by a single plate or girder, but two lining plates may be used depending on the traffic load.
Claims (2)
撤去しようとする伸縮装置が位置する部分およびその周囲の部分の舗装を取り除く工程と、
舗装を取り除いた部分の伸縮装置を切断して地上に取り出す工程と、
舗装および伸縮装置を撤去した箇所に覆工板を設置する工程と、
前記覆工板を設置した箇所の橋梁内部の桁の適所に継手部材を固定する工程と、
前記覆工板と前記継手部材とをワイヤで連結し、ワイヤを緊張させる工程と、
前記覆工板の周囲および覆工板の上に舗装材を敷設する工程と、
を含むことを特徴とする工法。 It is a temporary restoration method associated with the removal of the bridge telescopic device,
Removing the pavement of the portion where the telescopic device to be removed is located and the surrounding portion,
Cutting the telescopic device of the part where the pavement is removed and taking it out to the ground;
A process of installing a lining plate at the place where the pavement and the telescopic device are removed;
Fixing the joint member at an appropriate position of the girder inside the bridge where the lining plate is installed; and
Connecting the lining plate and the joint member with a wire, and tensioning the wire;
Laying paving material around the lining plate and on the lining plate;
A construction method characterized by containing.
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