JP6476426B2 - Member renewal method using lifting device - Google Patents

Member renewal method using lifting device Download PDF

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JP6476426B2
JP6476426B2 JP2018106664A JP2018106664A JP6476426B2 JP 6476426 B2 JP6476426 B2 JP 6476426B2 JP 2018106664 A JP2018106664 A JP 2018106664A JP 2018106664 A JP2018106664 A JP 2018106664A JP 6476426 B2 JP6476426 B2 JP 6476426B2
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晃生 白水
晃生 白水
聖治 竹内
聖治 竹内
明洋 山浦
明洋 山浦
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株式会社横河ブリッジ
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本願発明は、道路橋を構成する床版や桁などの部材(以下、単に「構成部材」という。)の改修に関する技術であり、より具体的には、基本的に1車線を使用して設定した工事ヤードの範囲内で構成部材を更新するのに適した揚重装置と、これを用いた部材更新方法に関するものである。   The present invention is a technology related to the repair of members such as floor slabs and girders (hereinafter simply referred to as “components”) that constitute a road bridge. More specifically, the present invention is basically set using one lane. The present invention relates to a lifting device suitable for updating a component member within a construction yard, and a member updating method using the lifting device.

高度経済成長期に集中的に整備されてきた建設インフラストラクチャー(以下、「建設インフラ」という。)は、既に相当な老朽化が進んでいることが指摘されている。平成26年には「道路の老朽化対策の本格実施に関する提言(社会資本整備審議会)」がとりまとめられ、平成24年の笹子トンネルの例を挙げて「近い将来、橋梁の崩落など人命や社会装置に関わる致命的な事態を招くであろう」と警鐘を鳴らし、建設インフラの維持管理の重要性を強く唱えている。   It has been pointed out that the construction infrastructure (hereinafter referred to as “construction infrastructure”) that has been intensively developed during the period of high economic growth has already undergone considerable deterioration. In 2014, the “Proposal for Full-scale Implementation of Road Aging Measures (Social Capital Development Council)” was compiled, giving examples of the Choshi Tunnel in 2012, “In the near future, human life and society such as the collapse of bridges, etc.” It will lead to a fatal situation related to the equipment, "he urged and emphasized the importance of maintaining construction infrastructure.

このような背景のもと、国は道路法施行規則の一部を改正する省令を公布し、具体的な建設インフラの点検方法、主な変状の着目箇所、判定事例写真などを示した定期点検要領を策定している。この定期点検要領では、約70万橋に上るといわれる橋長2.0m以上の橋を対象としており、供用開始後2年以内に初回点検、以降5年に1回の頻度で定期点検を行うこととしている。   Against this backdrop, the government promulgated a ministerial ordinance to revise a part of the Road Law Enforcement Regulations, and showed a specific method for inspecting construction infrastructure, points of major deformations, pictures of judgment cases, etc. The inspection procedure is formulated. This periodic inspection procedure covers bridges with a length of 2.0 m or more, which is said to be about 700,000 bridges. The first inspection is performed within 2 years after the start of service, and then the periodic inspection is performed once every 5 years thereafter. I am going to do that.

一方、道路橋を設計する際の基準である「道路橋示方書」は、昭和14年度版が発行されて以来随時見直されてきており、特に兵庫県南部地震の後には大幅な改定が行われている。この結果、従来では十分に耐力のあった橋梁であっても、現在の設計基準に照らせばその耐力が不足している場合も少なくない。   On the other hand, the “Road Bridge Specification”, which is the standard for designing road bridges, has been reviewed from time to time since the publication of the 14th year edition, especially after the Hyogoken-Nanbu Earthquake. ing. As a result, even in the case of a bridge that has been sufficiently proof in the past, the proof strength is often insufficient in light of the current design standards.

このように、老朽化と強度不足という2つの理由から、現在では橋梁の補強や改築がしばしば行われている。ところが現在の道路橋は、大量の交通を確保しており、つまり人の移動や流通産業を支えているのが現状であり、安易にその供用を止めることはできない。特に、高速道路など自動車専用道路の高架橋は、一日に数万台の車を通行させており、仮に通行させないとすればその経済的損失額は計り知れないものとなるし、救急の患者を搬送できないとすれば社会的な問題にもなりかねない。   Thus, for the two reasons of aging and lack of strength, reinforcement and reconstruction of bridges are often performed today. However, the current road bridge secures a large amount of traffic, that is, it supports the movement of people and the distribution industry, and its service cannot be stopped easily. Especially, viaducts on motorways such as expressways pass tens of thousands of cars a day, and if they are not allowed to pass, the economic loss will be immeasurable, and emergency patients will be lost. If it cannot be transported, it may become a social problem.

そこで、供用中の道路橋梁に対して工事を行う場合、少なくともの昼間の交通は確保すべく、夜間に通行規制を行って施工したいと考えている道路管理者が多いのが実情である。また、上下2車線ずつの道路橋であれば、下りの2車線を交互通行(上下車線)として一般開放し、一方の上り2車線を使用して工事を行うのが一般的である。ところが昨今では、さらに車線を開放するよう求められるケースも増え、下りの2車線は全面開放するとともに、上り2車線のうち1車線は常に開放し、残りの上り1車線のみで工事を行うよう要請されることもある。すなわち最も厳しい条件では、上下4車線のうち1車線のみを規制し、しかも昼間はその1車線も開放しなければならない(つまり、夜間のみの工事)わけである。   Therefore, when constructing road bridges that are in service, there are many road managers who want to conduct traffic restrictions at night in order to ensure at least daytime traffic. In addition, in the case of a road bridge with two upper and lower lanes, it is general that the two downward lanes are opened as alternate traffic (upper and lower lanes) and the construction is performed using one of the two upward lanes. In recent years, however, there are more cases where it is required to open the lane, and the two down lanes are fully open, and one of the two up lanes is always open, and the construction is requested only in the remaining one up lane. Sometimes it is done. That is, under the strictest conditions, only one lane of the upper and lower four lanes must be restricted, and one lane must be opened during the daytime (that is, construction only at night).

隣接する車線を一般開放し残りの1車線のみを規制したうえで工事を行うのは、様々な制限があるため種々の工夫を必要とする。例えば特許文献1では、上り(あるいは下り)2車線のうち一方の1車線を一次施工部、他方の1車線を二次施工部とし、交互に工事車線と一般開放車線に振り分けながら、コンクリート床版の架け替えを行う方法を提案している。そして1車線内での工事を可能とするため、架設装置を設置することとしている。この架設装置は、間隔を置いて配置される一対の門型脚部と、これらに架け渡された軌道用梁部によって構成され、コンクリート床版等を把持する吊り持ち手段が軌道用梁部上を移動するものである。   Opening adjacent lanes and restricting only the remaining one lane requires a variety of ingenuity due to various restrictions. For example, in Patent Document 1, one lane of up (or down) two lanes is a primary construction section, and the other lane is a secondary construction section. We propose a method to replace And in order to enable construction in one lane, a construction device will be installed. This erection device is composed of a pair of gate-shaped leg portions arranged at intervals and a track beam portion spanned between them, and a suspension means for gripping a concrete floor slab etc. is provided on the track beam portion. Is to move.

特開2016−98489号公報Japanese Patent Laid-Open No. 2006-98489

ところで、1車線のみを規制して道路橋の構成部材(床版や桁など)の更新を行う場合、撤去される構成部材(以下、「撤去部材」という。)や新たに設置する構成部材(以下、「新設部材」という。)を吊上げる揚重機が大型化するという問題を指摘することができる。図12は、上下ともに2車線ずつの道路橋を示し、上り2車線のうち一方の車線(図では上方)を一般開放しつつ、他方の車線(図では下側)を規制して工事を行う状況を示す平面図である。なおこの図では、工事側の1車線の所定区間を工事用の領域(以下、「工事ヤード」という。)として設定しており、この工事ヤードを破線で示している。もちろん工事ヤードは、構成部材の更新を行う範囲(以下、「施工区間」という。)を含むように設定される。   By the way, when only one lane is restricted and a road bridge component (such as a floor slab or girder) is updated, the component to be removed (hereinafter referred to as “removal member”) or a newly installed component ( In the following, it can be pointed out that the lifting equipment for lifting the "new member") becomes larger. FIG. 12 shows a road bridge with two lanes in both the upper and lower sides, and one of the two lanes (upward in the figure) is opened to the public while the other lane (lower in the figure) is restricted to perform the construction. It is a top view which shows a condition. In this figure, a predetermined section of one lane on the construction side is set as a construction area (hereinafter referred to as “construction yard”), and this construction yard is indicated by a broken line. Of course, the construction yard is set so as to include a range in which the component members are updated (hereinafter referred to as “construction section”).

道路橋の改修のため床版や桁などを吊上げるには、輸送の便が良く組立ても不要といった理由からトラッククレーンやラフタクレーンといった揚重機CRが使用されるのが一般的である。図12では、工事区間のうち起点側から既設の構成部材を撤去しており、図12(a)では最も起点側の撤去部材を揚重機CRで貨物自動車Trに搭載し、図12(b)では最も終点側の撤去部材を重機CRで貨物自動車Trに搭載している。この図から分かるように、最も起点側の撤去部材を搭載するときは、揚重機CRが貨物自動車Trに近付くことができるためその作業半径は比較的小さくて済むが、最も終点側の撤去部材を搭載するときは、既に撤去された区間があって揚重機CRが貨物自動車Trに近付くことができない。そのため、揚重機CRは比較的大きな作業半径となる。すなわち、図12のような工事を行うためには、大規模な揚重機CRが必要となるわけである。揚重機CRの規模が大きくなると、自走が難しくなるため搬入が大掛かりとなるうえ組立てが必要となり、これにかかる手間や時間の分だけコストを押し上げる結果となる。   In order to lift floor slabs and girders for rehabilitation of road bridges, it is common to use a lifting machine CR such as a truck crane or a rafter crane because it is easy to transport and does not require assembly. In FIG. 12, existing components are removed from the starting side in the construction section. In FIG. 12 (a), the removing member on the most starting side is mounted on the cargo truck Tr by the lifting machine CR, and FIG. Then, the removal member on the most end side is mounted on the lorry Tr with heavy equipment CR. As can be seen from this figure, when the removal member on the most starting side is mounted, the lifting machine CR can approach the lorry Tr so that the working radius is relatively small, but the removal member on the most end side is required. When installed, there is a section that has already been removed, and the lifting machine CR cannot approach the lorry Tr. Therefore, the lifting machine CR has a relatively large working radius. That is, in order to perform the construction as shown in FIG. 12, a large-scale lifting machine CR is required. If the scale of the lifting machine CR becomes large, self-propelling becomes difficult, so the carrying-in becomes large and assembly is required, resulting in an increase in cost by the time and effort required for this.

本願発明の課題は、従来技術が抱える問題を解決することであり、すなわち、大規模な揚重機CRを要することなく基本的に1車線のみの規制で道路橋の改修工事を行うことができる揚重装置と、これを用いた部材更新方法を提供することである。   The problem of the present invention is to solve the problems of the prior art, that is, lifting work that can basically be carried out for road bridge repair work with only one lane restriction without requiring a large-scale lift CR. It is providing a heavy apparatus and a member update method using the same.

本願発明は、市場で提供されているリフターを利用して新規の揚重装置を構築する、という点に着目してなされたものであり、これまでにない発想に基づいて行われた発明である。   The present invention has been made based on the idea that a new lifting device is constructed by using a lifter provided in the market, and is based on an unprecedented idea. .

本願発明の揚重装置(ウィンチ型揚重装置)は、撤去部材(道路橋の一部を撤去した構成部材)や新設部材(道路橋一部に新たに設置する構成部材)を吊上げかつ吊降ろす装置であり、リフターと、架設桁、吊り荷機構を備えたものである。リフターは、撤去部材や新設部材を含む荷重を支持するものであり、上下に伸縮可能な4本の支柱を含んで構成されるとともに、これら支柱内に通行空間(貨物自動車が通過可能な空間)を有したものである。また吊り荷機構は、吊りロープと、吊りロープの先端に固定された吊り治具、荷重を支持して吊り冶具を上げ下げできる動力手段を有している。そして動力手段で吊りロープを巻き上げ(又は巻き降ろす)ことによって、吊り治具が上下し、これに伴って吊り治具に把持された撤去部材や新設部材が吊上げられる(又は吊降ろされる)。よって、揚重機能はリフターによるものと、吊り荷機構によるものが備えられており、それぞれ独立して機能する。   The lifting device (winch type lifting device) of the present invention lifts and suspends a removal member (a component obtained by removing a part of a road bridge) or a new member (a component newly installed on a part of a road bridge). It is a device and is equipped with a lifter, a construction girder, and a suspended load mechanism. The lifter supports the load including the removal member and the newly installed member, and includes four support columns that can be vertically expanded and contracted, and a traffic space (a space through which the lorry can pass) in these support columns. It is what has. The hanging load mechanism has a hanging rope, a hanging jig fixed to the tip of the hanging rope, and a power means that can lift and lower the hanging jig while supporting the load. Then, by lifting (or unwinding) the suspension rope with the power means, the suspension jig is moved up and down, and the removal member or the newly installed member held by the suspension jig is suspended (or suspended). Therefore, the lifting function is provided by a lifter and by a suspended load mechanism and functions independently.

本願発明の揚重装置(架設桁型揚重装置)は、撤去部材や新設部材を吊上げるかつ吊降ろす装置であり、リフターと、架設桁、吊り荷機構を備えたものである。リフターは、撤去部材や新設部材を含む荷重を支持しかつ上下に伸縮可能な4本の支柱と、これら4本の支柱上部に連結される構台を含んで構成されるとともに、通行空間を有したものである。また架設桁は、2以上のリフターの構台に固定されてリフター間に架け渡され、吊り荷機構は、吊りロープと、この吊りロープの先端に固定された吊り治具(一般的にフック等と呼ばれるもの)、荷重を支持して吊り冶具を上げ下げできる動力手段を有するものである。また吊り荷機構は、架設桁に横行可能に取り付けられる。よって、揚重機能はリフターによるものと、吊り荷機構によるものが備えられており、それぞれ独立して機能する。   The lifting device (installed girder type lifting device) of the present invention is a device that lifts and suspends a removal member or a newly installed member, and includes a lifter, a built-up girder, and a suspended load mechanism. The lifter is configured to include four struts that can support a load including a removal member and a new member and can be vertically expanded and contracted, and a gantry coupled to the upper portions of the four struts, and has a passage space. Is. In addition, the installation girders are fixed to two or more lifter gantry and spanned between the lifters, and the hanging load mechanism includes a suspension rope and a suspension jig (generally a hook or the like) fixed to the tip of the suspension rope. And a power means capable of supporting the load and raising and lowering the lifting jig. The suspended load mechanism is attached to the erection girder so that it can traverse. Therefore, the lifting function is provided by a lifter and by a suspended load mechanism and functions independently.

本願発明の揚重装置は、2本の連結梁を有するリフターを備えたものとすることができる。4本の支柱のうち2本ずつが1本の連結梁で連結され、2本の連結梁は左右に伸縮可能である。   The lifting device of the present invention can include a lifter having two connecting beams. Two of the four columns are connected by one connecting beam, and the two connecting beams can be expanded and contracted to the left and right.

本願発明の「揚重装置を用いた部材更新方法」は、道路橋の一部(例えば1車線)を使用して設定された所定区間である工事ヤード内に設置された架設桁型揚重装置を使用して施工区間の構成部材を更新する方法であり、撤去工程と撤去部材積載工程を備えた方法である。なお揚重装置は、施工区間の上方に架設桁が配置されるよう設置される。撤去工程では、施工区間においてあらかじめ切断された道路橋の構成部材を吊り荷機構の巻き上げもしくはリフターのせり上げにより道路橋本体から取り外し、撤去部材積載工程では、撤去部材を揚重装置で吊上げるとともに撤去部材を把持した吊り荷機構(吊り治具)が架設桁に沿って横行して撤去部材を貨物自動車に吊降ろす。なお撤去工程と撤去部材積載工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。また、リフターの吊り係止具が橋軸方向や橋軸直角方向に水平移動する機能を設けることもできる。これにより位置調整が自在となり、すなわち架設桁の下方であって架設桁軸直角方向にある部材も容易に吊上げ吊降しすることができる。さらに、吊り荷機構が架設桁直角方向に水平移動する機能を設けることもでき、これにより架設桁下方直下から離れたところにある部材も容易に吊上げ吊降しすることができる。   The “member updating method using a lifting device” according to the present invention is an erection type lifting device installed in a construction yard that is a predetermined section set using a part of a road bridge (for example, one lane). It is a method of updating the structural member of the construction section using the method, and is a method comprising a removal process and a removal member loading process. The lifting device is installed so that a construction girder is arranged above the construction section. In the removal process, the components of the road bridge cut in advance in the construction section are removed from the road bridge body by lifting the lifting mechanism or lifting the lifter. In the removal member loading process, the removal member is lifted by a lifting device. A hanging load mechanism (hanging jig) that grips the removal member traverses along the installation girder and suspends the removal member from the lorry. In the removal process and the removal member loading process, the removal member can be lifted and hung using a lifting mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter. In addition, it is possible to provide a function of the lifter suspension latch horizontally moving in the direction of the bridge axis or the direction perpendicular to the bridge axis. As a result, the position can be adjusted freely, that is, a member below the installation girder and in a direction perpendicular to the installation girder axis can be easily lifted and hung. Furthermore, a function can be provided in which the suspended load mechanism moves horizontally in the direction perpendicular to the erection girder, whereby members located away from directly below the erection girder can be easily lifted and hung.

本願発明の「揚重装置を用いた部材更新方法」は、さらに新設工程を備えた方法とすることもできる。この新設工程では、貨物自動車に搭載された新設部材を揚重装置で吊上げるとともに、新設部材を把持した吊り荷機構(吊り治具)が架設桁に沿って横行して新設部材を施工区間の所定位置に吊降ろして設置する。なお新設工程では、吊り荷機構を用いて新設部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって新設部材の吊上げと吊降ろしを行うこともできる。   The “member renewal method using the lifting device” of the present invention may be a method further including a new installation step. In this new installation process, a new member mounted on a lorry is lifted by a lifting device, and a hanging load mechanism (hanging jig) that grips the new member is traversed along the erection girder to install the new member in the construction section. Hang in place and install. In the new installation step, the new member can be lifted and hung using a lifting mechanism, and the new member can be lifted and hung by vertically extending and lowering the lifter.

本願発明の「揚重装置を用いた部材更新方法」は、揚重装置を構築する揚重装置構築工程をさらに備えた方法とすることもできる。この揚重装置構築工程は、架設桁組立工程、架設桁設置工程を有する工程である。このうち架設桁組立工程では、施工区間の路面上で2以上の分割部材を連結して架設桁を組立て、架設桁設置工程では、吊り荷機構が取り付けられた架設桁を2以上のリフター(施工区間を挟んで配置)間に架け渡して設置する。なお吊り荷機構は、あらかじめ架設桁に取り付けられた状態で現地に搬入することもできるし、架設桁と吊り荷機構を別々に搬入することとし、分割部材の連結に合わせて吊り荷機構を架設桁に取り付けることもできる。   The “member updating method using the lifting device” of the present invention may be a method further comprising a lifting device construction step of constructing the lifting device. This lifting apparatus construction process is a process having an installation beam assembly process and an installation beam installation process. Among them, in the installation girder assembly process, two or more divided members are connected on the road surface of the construction section to assemble the installation girder, and in the installation girder installation process, the installation girder with the suspended load mechanism is installed in two or more lifters (construction work). Installed across the section). In addition, the suspended load mechanism can be carried into the site in a state where it is already attached to the installation girder, or the installation girder and the suspended load mechanism will be loaded separately, and the suspended load mechanism will be installed according to the connection of the divided members. It can also be attached to a girder.

本願発明の「揚重装置を用いた部材更新方法」は、工事ヤード内に設置されたウィンチ型揚重装置を使用し道路橋の構成部材を更新する方法であって、撤去工程と撤去部材積載工程を備えた方法とすることもできる。ウィンチ型揚重装置の第1の揚重装置と第2の揚重装置は、撤去部材の前後を挟むようにそれぞれ配置される。撤去工程では、施工区間においてあらかじめ切断された道路橋の構成部材を吊り荷機構の巻き上げもしくはリフターのせり上げにより道路橋本体から取り外し、撤去部材積載工程では、撤去工程で取り外した撤去部材を貨物自動車に吊降ろす。さらに撤去工程は、撤去部材両吊り工程と撤去部材移動工程、撤去部材片降ろし工程を有している。撤去部材両吊り工程では、第1の揚重装置と第2の揚重装置の動力手段によってそれぞれの吊りロープを巻上げることで、吊り治具に把持された撤去部材を吊上げる。また撤去部材移動工程では、第1の揚重装置の動力手段によって撤去部材を吊上げた状態で、第2の揚重装置の動力手段が吊りロープを巻下げることによって、撤去部材を第1の揚重装置の下方まで移動させる。そして撤去部材片降ろし工程では、第1の揚重装置で撤去部材を貨物自動車に吊降ろす。この場合、貨物自動車に搭載された新設部材を施工区間の計画位置に吊降ろして設置する新設工程をさらに備えた方法とすることもできる。この新設工程は、新設部材両吊り工程と新設部材移動工程、新設部材片降ろし工程を有している。新設部材両吊り工程では、第1の揚重装置と第2の揚重装置の動力手段によってそれぞれの吊りロープを巻上げることで、吊り治具に把持された新設部材を貨物自動車から吊上げ、その後この貨物自動車は施工区間外に移動する。また新設部材移動工程では、第1の揚重装置の動力手段によって新設部材を吊上げた状態で、第2の揚重装置の動力手段が吊りロープを巻下げることによって新設部材を第1の揚重装置の下方まで移動させる。そして新設部材片降ろし工程では、第1の揚重装置で新設部材を計画位置に吊降ろす。   “Member updating method using lifting device” of the present invention is a method of updating a component of a road bridge using a winch type lifting device installed in a construction yard. It can also be set as the method provided with the process. The first lifting device and the second lifting device of the winch type lifting device are respectively arranged so as to sandwich the front and rear of the removal member. In the removal process, the components of the road bridge cut in advance in the construction section are removed from the road bridge body by lifting the lifting mechanism or lifting the lifter. In the removal member loading process, the removal member removed in the removal process is removed from the truck. Suspend on. Furthermore, the removal process has a removal member double suspension process, a removal member moving process, and a removal member piece lowering process. In the removal member double suspension step, the removal member held by the suspension jig is lifted by winding the suspension ropes by the power means of the first lifting device and the second lifting device. In the removal member moving step, the power member of the second lifting device lowers the suspension rope while the removal member is lifted by the power device of the first lifting device, so that the removal member is moved to the first lifting device. Move to below the heavy equipment. In the removal member piece lowering process, the removal member is suspended from the truck by the first lifting device. In this case, it can also be set as the method further provided with the new installation process which hangs and installs the new member mounted in the truck at the planned position of a construction area. This new installation process has a new member double suspension process, a new member moving process, and a new member piece lowering process. In the both-new-member suspension process, the suspension members are lifted from the lorry by lifting the suspension ropes by the power means of the first lifting device and the second lifting device. This truck moves outside the construction section. Also, in the new member moving step, the new member is lifted by the first lifting device when the power member of the second lifting device lowers the suspension rope while the new member is lifted by the power device of the first lifting device. Move to the bottom of the device. Then, in the new member piece lowering step, the new member is suspended at the planned position by the first lifting device.

本願発明の「揚重装置を用いた部材更新方法」は、4以上のリフターと架設桁と2以上の吊り荷機構を含んで構成される揚重装置を利用する方法であって、撤去工程と第1盛替え工程、第2盛替え工程、撤去部材積載工程を備えた方法とすることもできる。なお、4以上のリフターのうち第1副リフターと第2副リフターが施工区間を挟んで配置され、第1主リフターが第1副リフターと施工区間の間に配置されるとともに、第2主リフターが第2副リフターと施工区間の間に配置される。また架設桁は、第1主リフターと第2主リフターの構台に固定されてこれらリフター間に架け渡され、吊り荷機構は、架設桁に沿って横行可能に架設桁に取り付けられる。撤去工程では、施工区間においてあらかじめ切断された道路橋の構成部材を吊り荷機構の巻き上げもしくはリフターのせり上げにより取り外す。第1盛替え工程では、撤去工程で撤去した撤去部材を揚重装置で吊上げるとともに、架設桁に沿って撤去部材を把持した吊り荷機構が横行し、撤去部材の一端を貨物自動車に吊降ろすことで、吊り荷機構と貨物自動車によって撤去部材を支持する。第2盛替え工程では、撤去部材の一端を支持する貨物自動車が移動するとともに、架設桁に沿って撤去部材を把持した吊り荷機構が横行することによって、撤去部材の一部が第1副リフターの下方に位置するまで撤去部材を運送し、撤去部材の一端の支持を貨物自動車から第1副リフターに移行する。そして撤去部材積載工程では、吊り荷機構と第1副リフターによって支持された撤去部材を、撤去部材の下方まで移動した貨物自動車に吊降ろす。なお撤去工程と撤去部材積載工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。さらにこの場合、新設部材吊上げ工程と第3盛替え工程、第4盛替え工程、新設工程を備えた方法とすることもできる。新設部材吊上げ工程では、第2主リフターと第2副リフターの下方まで運送された新設部材を、吊り荷機構と第2副リフターによって貨物自動車から吊上げる。第3盛替え工程では、新設部材の一端を貨物自動車に吊降ろすことで新設部材の一端の支持を第2副リフターから貨物自動車に移行し、吊り荷機構と貨物自動車によって新設部材を支持する。第4盛替え工程では、新設部材の一端を支持する貨物自動車が移動するとともに、架設桁に沿って新設部材を把持した吊り荷機構が横行することによって、新設部材の一部が架設桁の下方に位置するまで新設部材を運送し、新設部材の一端の支持を貨物自動車から吊り荷機構に移行する。新設工程では、架設桁に沿って新設部材を把持した吊り荷機構が横行し、揚重装置で新設部材を施工区間の計画位置に吊降ろして設置する。なお、新設部材吊上げ工程と新設工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。   The “member renewal method using a lifting device” of the present invention is a method of using a lifting device including four or more lifters, a construction girder, and two or more suspended load mechanisms, and a removal step; It can also be set as the method provided with the 1st refilling process, the 2nd refilling process, and the removal member loading process. Of the four or more lifters, the first sub-lifter and the second sub-lifter are arranged across the construction section, the first main lifter is arranged between the first sub-lifter and the construction section, and the second main lifter Is arranged between the second sub-lifter and the construction section. The installation girder is fixed to the gantry of the first main lifter and the second main lifter and spanned between the lifters, and the hanging load mechanism is attached to the installation girder so as to traverse along the installation girder. In the removal process, the structural members of the road bridge that have been cut in advance in the construction section are removed by lifting the lifting mechanism or lifting the lifter. In the first refilling process, the removal member removed in the removal process is lifted by a lifting device, and a hanging load mechanism that grips the removal member along the erection girder hangs and suspends one end of the removal member on the lorry. Thus, the removal member is supported by the suspended load mechanism and the lorry. In the second refilling step, the lorry supporting one end of the removal member moves and the suspension mechanism that grips the removal member moves along the installation girder so that a part of the removal member becomes the first sub-lifter. The removal member is transported until it is positioned below, and the support of one end of the removal member is transferred from the lorry to the first auxiliary lifter. In the removal member loading step, the removal member supported by the hanging load mechanism and the first sub-lifter is suspended from the lorry moved to the lower side of the removal member. In the removal process and the removal member loading process, the removal member can be lifted and hung using a lifting mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter. Further, in this case, a method including a new member lifting process, a third refilling process, a fourth refilling process, and a new installation process may be employed. In the new member lifting process, the new member transported to the lower side of the second main lifter and the second sub-lifter is lifted from the lorry by the lifting mechanism and the second sub-lifter. In the third refilling process, one end of the new member is suspended from the cargo vehicle by suspending one end of the new member from the second sub-lifter to the cargo vehicle, and the new member is supported by the suspension mechanism and the cargo vehicle. In the fourth refilling process, the lorry supporting one end of the newly installed member moves, and the suspended load mechanism that grips the newly installed member traverses along the installed beam so that a part of the newly installed member is below the installed beam. The new member is transported until it is located at the position, and the support of one end of the new member is transferred from the truck to the suspension mechanism. In the new installation process, the suspended load mechanism that grips the new member along the erection girder is rampant, and the new member is suspended and installed at the planned position in the construction section by the lifting device. In the new member lifting process and the new process, the removal member can be lifted and hung using a lifting mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter.

本願発明の「揚重装置を用いた部材更新方法」は、4以上のリフターと架設桁と2以上の吊り荷機構を含んで構成される揚重装置を利用する方法であって、撤去工程と第1架設桁設置工程、撤去部材積載工程を備えた方法とすることもできる。なお、4以上のリフターのうち第1副リフターと第2副リフターが施工区間を挟んで配置され、第1主リフターが第1副リフターと施工区間の間に配置されるとともに、第2主リフターが第2副リフターと施工区間の間に配置される。また架設桁は、第1主リフターと第2主リフターを含む3以上のリフターの構台に固定されてこれらリフター間に架け渡され、吊り荷機構は、架設桁に沿って横行可能に架設桁に取り付けられる。撤去工程では、施工区間においてあらかじめ切断された道路橋の構成部材を吊り荷機構の巻き上げもしくはリフターのせり上げにより取り外す。第1架設桁設置工程では、第1主リフター、第2主リフター及び第1副リフターに架設桁を架け渡す。撤去部材積載工程では、撤去工程で撤去した撤去部材を揚重装置で吊上げるとともに、第1主リフター、第2主リフター及び第1副リフターに架け渡された架設桁に沿って撤去部材を把持した吊り荷機構が横行し、揚重装置で撤去部材を貨物自動車に吊降ろす。なお撤去工程と撤去部材積載工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。さらにこの場合、第2架設桁設置工程と新設工程を備えた方法とすることもできる。第2架設桁設置工程では、第1主リフター、第2主リフター及び第2副リフターに架設桁を架け渡す。新設工程では、貨物自動車に搭載された新設部材を揚重装置で吊上げるとともに、第1主リフター、第2主リフター及び第2副リフターに架け渡された架設桁に沿って新設部材を把持した吊り荷機構が横行し、揚重装置で新設部材を施工区間の計画位置に吊降ろして設置する。なお新設工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。   The “member renewal method using a lifting device” of the present invention is a method of using a lifting device including four or more lifters, a construction girder, and two or more suspended load mechanisms, and a removal step; It can also be set as the method provided with the 1st erection girder installation process and the removal member loading process. Of the four or more lifters, the first sub-lifter and the second sub-lifter are arranged across the construction section, the first main lifter is arranged between the first sub-lifter and the construction section, and the second main lifter Is arranged between the second sub-lifter and the construction section. The installation girder is fixed to three or more lifters including the first main lifter and the second main lifter and is bridged between the lifters. The suspension mechanism can be traversed along the installation girder. It is attached. In the removal process, the structural members of the road bridge that have been cut in advance in the construction section are removed by lifting the lifting mechanism or lifting the lifter. In the first installation girder installation step, the installation girder is bridged to the first main lifter, the second main lifter, and the first sub-lifter. In the removal member loading process, the removal member removed in the removal process is lifted by a lifting device, and the removal member is gripped along the installation girders spanned by the first main lifter, the second main lifter, and the first sub-lifter. The suspended load mechanism is rampant, and the removal member is suspended from the truck by the lifting device. In the removal process and the removal member loading process, the removal member can be lifted and hung using a lifting mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter. Furthermore, in this case, a method including a second erection girder installation process and a new installation process may be employed. In the second erection girder installation step, the erection girder is bridged to the first main lifter, the second main lifter, and the second sub-lifter. In the new construction process, the new member mounted on the truck is lifted by the lifting device, and the new member is gripped along the construction girders spanned by the first main lifter, the second main lifter and the second sub-lifter. The suspended load mechanism ramps up, and the newly installed member is suspended from the planned position in the construction section by the lifting device. In the new installation process, the removal member can be lifted and hung using a hanging load mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter.

本願発明の「揚重装置を用いた部材更新方法」は、4以上のリフターと架設桁と2以上の吊り荷機構を含んで構成される揚重装置を利用する方法であって、撤去工程と撤去部材積載工程を備えた方法とすることもできる。なお、4以上のリフターのうち第1副リフターと第2副リフターが施工区間を挟んで配置され、第1主リフターが第1副リフターと施工区間の間に配置されるとともに、第2主リフターが第2副リフターと施工区間の間に配置される。また架設桁は、第1副リフター、第1主リフター、第2主リフター及び第2副リフターの構台に固定されてこれらリフター間に架け渡され、吊り荷機構は、架設桁に沿って横行可能に架設桁に取り付けられる。撤去工程では、施工区間においてあらかじめ切断された道路橋の構成部材を吊り荷機構の巻き上げもしくはリフターのせり上げにより取り外す。撤去部材積載工程では、撤去工程で撤去した撤去部材を揚重装置で吊上げるとともに、架設桁に沿って撤去部材を把持した吊り荷機構が横行し、揚重装置で撤去部材を貨物自動車に吊降ろす。なお撤去工程と撤去部材積載工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。さらにこの場合、新設工程を備えた方法とすることもできる。新設工程では、貨物自動車に搭載された新設部材を揚重装置で吊上げるとともに、架設桁に沿って新設部材を把持した吊り荷機構が横行し、揚重装置で新設部材を施工区間の計画位置に吊降ろして設置する。なお新設工程では、吊り荷機構を用いて撤去部材の吊上げと吊降ろしを行うこともできるし、リフターの上下伸縮によって撤去部材の吊上げと吊降ろしを行うこともできる。   The “member renewal method using a lifting device” of the present invention is a method of using a lifting device including four or more lifters, a construction girder, and two or more suspended load mechanisms, and a removal step; It can also be set as the method provided with the removal member loading process. Of the four or more lifters, the first sub-lifter and the second sub-lifter are arranged across the construction section, the first main lifter is arranged between the first sub-lifter and the construction section, and the second main lifter Is arranged between the second sub-lifter and the construction section. The installation girders are fixed to the gantry of the first sub-lifter, the first main lifter, the second main lifter and the second sub-lifter and bridged between these lifters, and the lifting mechanism can traverse along the installation girders It is attached to the erection girder. In the removal process, the structural members of the road bridge that have been cut in advance in the construction section are removed by lifting the lifting mechanism or lifting the lifter. In the removal member loading process, the removal member removed in the removal process is lifted by a lifting device, and the lifting mechanism that grips the removal member along the installation girder is traversed, and the lifting device suspends the removal member from the lorry. take down. In the removal process and the removal member loading process, the removal member can be lifted and hung using a lifting mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter. Further, in this case, a method including a new installation process can be used. In the new construction process, the newly installed members mounted on the lorry are lifted by the lifting device, and the lifting mechanism that grips the new members along the erection girder is rampant, and the newly installed members are moved to the planned position in the construction section. Suspend to install. In the new installation process, the removal member can be lifted and hung using a hanging load mechanism, and the removal member can be lifted and hung by vertically extending and retracting the lifter.

本願発明の「揚重装置を用いた部材更新方法」は、リフター設置工程において、リフターの自立によりリフターを設置する方法とすることもできる。詳しくは、リフターが貨物自動車に搭載されて仮設ヤード内に搬入されるとともに、所定位置で停止した貨物自動車の荷台上で2本の連結梁が荷台の外側に伸び、さらに4本の支柱が下方に伸びることで4本の支柱の下端が路面に接地し、リフターが路面上で自立すると貨物自動車が移動する。したがってこの場合のリフターは、2本の連結梁を有し、2本の連結梁の両端にはそれぞれ支柱の上部が固定され、4本の支柱は上下に伸縮可能であるとともに、2本の連結梁は左右に伸縮可能である。   The “member updating method using the lifting device” of the present invention may be a method of installing the lifter by the lifter independence in the lifter installation step. Specifically, the lifter is mounted on a cargo truck and carried into a temporary yard, and two connecting beams extend outside the cargo bed on the truck bed stopped at a predetermined position. The lower ends of the four pillars touch the road surface, and the lorry moves when the lifter is self-supporting on the road surface. Therefore, the lifter in this case has two connecting beams, and the upper portions of the columns are fixed to both ends of the two connecting beams, and the four columns can be expanded and contracted vertically and the two connecting beams are connected. The beam can be expanded and contracted to the left and right.

本願発明の揚重装置、及び揚重装置を用いた部材更新方法には、次のような効果がある。
(1)1車線のみの規制で実施することができるため、例えば上下4車線の場合、下りの2車線は全面開放するとともに上り2車線のうち1車線も常に開放することができる。
(2)揚重装置のリフターは、市場で提供されている通常のリフターを利用することができることから、手間やコストをかけることなく実施することができる。
(3)撤去部材や新設部材を把持した状態で吊り治具が架設桁に沿って横行するため、撤去部材や新設部材を橋軸方向(道路延長方向)に輸送することができ、この結果、大きな作業半径を有する大型のクレーン等を用意する必要がなく、その分コストを抑えることができる。
(4)1車線しか有さない狭い幅員の橋梁でも、本願発明を用いれば部材更新を行うことができる。
(5)下路トラスや下路アーチなど橋面上に橋梁の部材を有する橋梁でも、本願発明を用いれば、橋面上の限られた作業空間で部材更新が可能となる。
(6)揚重装置のリフターは貨物自動車に搭載され、自ら組み立てと解体ができるので、揚重装置としての組みばらしが容易であり、施工時間が短縮できる。
(7)施工区間長を橋梁1径間とし、主桁と床版を接合した状態で更新(撤去〜新設)を行えば、さらに急速に橋梁全体の更新を行うことができる。
The lifting device of the present invention and the member update method using the lifting device have the following effects.
(1) Since it can be implemented with restrictions on only one lane, for example, in the case of four lanes in the upper and lower lanes, two lanes on the downside are fully open and one lane of the two lanes on the upside can always be opened.
(2) Since the lifter of the lifting device can use a normal lifter provided in the market, it can be carried out without labor and cost.
(3) Since the suspension jig traverses along the installation girder while holding the removal member or the new member, the removal member or the new member can be transported in the direction of the bridge axis (road extension direction). There is no need to prepare a large crane having a large working radius, and the cost can be reduced accordingly.
(4) Even with a narrow-width bridge having only one lane, the member can be updated by using the present invention.
(5) Even for a bridge having a bridge member on the bridge surface such as a lower truss and a lower arch, the present invention can be used to update the member in a limited work space on the bridge surface.
(6) Since the lifter of the lifting device is mounted on a truck and can be assembled and disassembled by itself, it can be easily assembled as a lifting device, and the construction time can be shortened.
(7) If the construction section length is one bridge span and the main girder and the floor slab are joined and updated (removal to new construction), the entire bridge can be updated more rapidly.

本願発明を実施して道路橋の一部を更新する状況を示す平面図。The top view which shows the condition which implements this invention and updates a part of road bridge. (a)はリフターを示す斜視図、(b)はリフターを示す正面図。(A) is a perspective view which shows a lifter, (b) is a front view which shows a lifter. トレーラーに搭載されたリフターが自立して設置される状況を示すステップ図。The step figure which shows the condition where the lifter mounted in the trailer is installed independently. 本願発明の架設桁型揚重装置の構築方法の主な工程を示すステップ図。The step figure which shows the main processes of the construction method of the construction girder type lifting device of this invention. (a)は本体桁とレール桁からなる架設桁を示す側面図、(b)は撤去部材を吊った状態の架設桁型揚重装置を示す正面図。(A) is a side view which shows the construction girder which consists of a main body girder and a rail girder, (b) is a front view which shows the construction girder type lifting apparatus of the state which suspended the removal member. 架設桁型揚重装置を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図。The flowchart which shows the flow of the main processes of the member update method of this invention at the time of using a construction girder type lifting apparatus. (a)は架設桁型揚重装置によって撤去部材を吊上げる工程を示すステップ図、(b)は架設桁型揚重装置によって吊上げた撤去部材を貨物自動車に搭載する工程を示すステップ図。(A) is a step figure which shows the process of lifting a removal member with a erection girder type lifting apparatus, (b) is a step figure which shows the process of mounting the removal member lifted with a erection girder type lifting apparatus in a truck. (a)は貨物自動車に搭載された新設部材を架設桁型揚重装置によって吊上げる工程を示すステップ図、(b)は架設桁型揚重装置によって吊上げた新設部材を計画位置に設置する工程を示すステップ図。(A) is a step diagram showing a process of lifting a newly installed member mounted on a lorry by a erection girder type lifting device, (b) is a process of installing a new member lifted by a erected girder type lifting device at a planned position. FIG. (a)は施工区間の後方側に撤去部材を仮置きしておく工程を示すステップ図、(b)は施工区間の後方側に新設部材を仮置きしておく工程を示すステップ図。(A) is a step diagram showing a process of temporarily placing a removal member on the rear side of the construction section, (b) is a step diagram showing a process of temporarily placing a new member on the rear side of the construction section. ウィンチ型揚重装置を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図。The flowchart which shows the flow of the main processes of the member update method of this invention at the time of using a winch type lifting apparatus. ウィンチ型揚重装置によって撤去部材を貨物自動車に搭載する工程を示すステップ図。The step figure which shows the process of mounting a removal member in a truck with a winch type lifting apparatus. (a)は施工区間のうち最も終点側の撤去部材を揚重機で貨物自動車に搭載する状況を示すモデル図、(b)は施工区間のうち最も終点側の撤去部材を揚重機で貨物自動車に搭載する状況を示すモデル図。(A) is a model diagram showing the situation in which the removal member on the most end point side of the construction section is mounted on the truck by the lifting machine, and (b) is the removal member on the most end point side of the construction section in the construction truck. The model figure which shows the condition to mount. 2基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図。The flowchart which shows the flow of the main processes of the member update method of this invention at the time of using a 2 type long installation girder type lifting apparatus. 2基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、架設桁を設置する前までの工程を示すステップ図。The step figure which shows the process until it installs an installation girder among the member update methods of this invention at the time of using a 2 type long installation girder type lifting apparatus. 2基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、撤去部材を吊上げるまでの工程を示すステップ図。The step figure which shows the process until it lifts a removal member among the member update methods of this invention at the time of using a 2 type long installation girder type lifting apparatus. 2基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、撤去部材を搬出するまでの工程を示すステップ図。The step figure which shows the process until it carries out a removal member among the member update methods of this invention at the time of using a 2 type long erection girder type lifting apparatus. 2基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、新設部材を設置するまでの工程を示すステップ図。The step figure which shows the process until installing a new member among the member update methods of this invention at the time of using a 2 type long installation girder type lifting apparatus. 架設桁を3基のリフターに架け渡した多基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図。The flowchart which shows the flow of the main processes of the member update method of this invention at the time of using the multi-unit type long installation girder type lifting apparatus which spanned the installation girders on the three lifters. 架設桁を3基のリフターに架け渡した多基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、撤去部材を搬出するまでの工程を示すステップ図。The step figure which shows the process until it carries out a removal member among the member update methods of this invention at the time of using the multi-unit type long installation girder type lifting device which spanned the installation girder on three lifters. 架設桁を3基のリフターに架け渡した多基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、新設部材を設置するまでの工程を示すステップ図。The step figure which shows the process until installing a new member among the member update methods of this invention at the time of using the multi-unit type long installation girder type | formula lifting apparatus which spanned the installation girder on three lifters. 架設桁を4基のリフターに架け渡した多基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図。The flowchart which shows the flow of the main processes of the member update method of this invention at the time of using the multi-unit type long installation girder type | formula lifting apparatus which spanned the installation girder on four lifters. 架設桁を4基のリフターに架け渡した多基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、撤去部材を貨物自動車に搭載するまでの工程を示すステップ図。The step which shows the process until a removal member is mounted in a lorry among the member renewal methods of this invention at the time of using the multi-unit type long erection girder type lifting device which erected the erection girder over four lifters Figure. 架設桁を4基のリフターに架け渡した多基式長尺架設桁型揚重装置を用いた場合の本願発明の部材更新方法のうち、新設部材を設置するまでの工程を示すステップ図。The step figure which shows the process until it installs a new member among the member update methods of this invention at the time of using the multi-unit type long installation girder type | formula lifting apparatus which spanned the installation girder on four lifters.

本願発明の揚重装置、及び揚重装置を用いた部材更新方法の実施の形態の一例を、図に基づいて説明する。   An example of an embodiment of a lifting device of the present invention and a member updating method using the lifting device will be described with reference to the drawings.

1.定義
本願発明の実施形態の例を説明するにあたって、はじめにここで用いる用語の定義を示しておく。
1. Definitions In describing examples of embodiments of the present invention, definitions of terms used here are given first.

(構成部材)
本願発明の揚重装置、及び揚重装置を用いた部材更新方法は、道路橋を構成するコンクリート床版や鋼床版、主桁や横桁、あるいは接合部材(主桁と床版、横桁などを接合した部材)といった部材の設置と撤去に関する技術である。そこで、道路橋を構成するこれらの部材のことをここでは総称して単に「構成部材」ということとする。なお構成部材は、鋼やコンクリート、FRP(Fiber Reinforced Plastics)など様々な材質製のものとすることができ、すなわち本願発明では構成部材の材質は特に限定されない。また、本願発明の揚重装置を用いた部材更新方法は、構成部材を撤去するとともに撤去した後に新規の構成部材を設置する(以下、撤去して設置することを「更新」という。)方法であり、便宜上ここでは撤去した構成部材のことを「撤去部材」と、新たに設置される構成部材のことを「新設部材」ということとする。
(Components)
The lifting device of the present invention and the member updating method using the lifting device include a concrete floor slab, a steel floor slab, a main girder, a cross girder, or a joining member (a main girder and a floor slab, a cross girder constituting a road bridge). This is a technology related to the installation and removal of members such as members joined together. Therefore, these members constituting the road bridge are collectively referred to herein simply as “component members”. The constituent members can be made of various materials such as steel, concrete, FRP (Fiber Reinforced Plastics), that is, the material of the constituent members is not particularly limited in the present invention. Moreover, the member update method using the lifting apparatus of the present invention is a method of removing a component member and installing a new component member after removing the component member (hereinafter, removing and installing is referred to as “update”). For convenience, the removed component member is referred to as a “removal member” and the newly installed component member as a “new member”.

(工事ヤード)
図1は、本願発明を実施して道路橋の一部を更新する状況を示す平面図である。この図で破線によって示す範囲が、本願発明の揚重装置を用いた部材更新方法を実施するために規制された工事用の範囲であり、この範囲のことをここでは「工事ヤード100」ということとする。この工事ヤード100は、道路橋の1車線を使用して所定の延長区間で設定される。なお、「1車線を使用して」とは、他の車線を使用しないという意味であって、当該車線のみに対して工事ヤード100を設定する場合のほか、当該1車線に側方領域(路肩や中央帯や側帯、あるいは壁高欄や地覆など)を加えた範囲に対して工事ヤード100を設定する場合も含まれる。さらに当該1車線に隣接する車線の略半幅を含めたいわば1,5車線を使用して工事ヤード100を設定してもよい。例えば図1に示す上下2車線ずつの道路橋の場合は、上りの1車線(図では下側車線)のみを使用して工事ヤード100が設定されている。したがって、下り線は2車線ともに常時一般開放することができ、上り線も1車線は常時一般開放することができる。つまり、トラックやトレーラーあるいは台車(特に、ドーリーなどの多輪台車)など荷台に撤去部材や新設部材を搭載することができる工事用の車両(以下、「貨物自動車Tr」という。)は、工事ヤード100が設定された1車線を利用して移動するわけである。
(Construction yard)
FIG. 1 is a plan view showing a situation where a part of a road bridge is updated by implementing the present invention. A range indicated by a broken line in this figure is a range for construction that is restricted in order to implement the member renewal method using the lifting device of the present invention, and this range is referred to herein as “construction yard 100”. And The construction yard 100 is set in a predetermined extension section using one lane of a road bridge. Note that “using one lane” means that no other lane is used. In addition to the case where the construction yard 100 is set only for the lane, a side area (shoulder on the shoulder) In addition, a case where the construction yard 100 is set for a range including a central belt, a side belt, a wall rail, a ground cover, or the like) is also included. Furthermore, the construction yard 100 may be set using a so-called 1,5 lane including the substantially half width of the lane adjacent to the one lane. For example, in the case of the road bridge with two upper and lower lanes shown in FIG. 1, the construction yard 100 is set using only one lane on the upper side (lower lane in the figure). Therefore, both the two lanes of the down line can be opened to the public at all times, and one line of the up line can be opened to the general state at all times. In other words, a construction vehicle (hereinafter referred to as “truck lorry Tr”) in which a removal member or a new member can be mounted on a cargo bed such as a truck, a trailer, or a carriage (in particular, a multi-wheel carriage such as a dolly) is a construction yard. It moves using one lane in which 100 is set.

(施工区間)
構成部材を更新(撤去〜設置)する区間のことを、ここでは「施工区間110」ということとする。もちろん、工事ヤード100は施工区間110をその範囲内に含むように設定され、しかも施工区間110が工事ヤード100の後方側(図1では終点側寄り)に位置するように設定される。ここでは「前方」及び「後方」という語を用いて説明しているが、この前方及び後方はその車線に本来設定されている進行方向を基準にしている。すなわち、上り車線に工事ヤード100設定される場合は起点側が「前方」であって終点側が「後方」となり、下り車線に工事ヤード100設定される場合は終点側が「前方」であって起点側が「後方」となる。なお施工区間は、橋梁の支持点と支持点間(つまり1径間分)とするなど1車線のうち道路延長方向(つまり橋軸方向)に分割された区間であるが、さらに道路幅員方向(つまり橋軸直角方向)に分割した区間とすることもできる。換言すれば、1車線分の床版や主桁といった構成部材を一度に更新することもできるし、道路幅員方向(橋軸直角方向)に分割したうえで構成部材を更新していくこともできる。
(Construction section)
The section in which the component is updated (removal to installation) is referred to herein as “construction section 110”. Of course, the construction yard 100 is set so as to include the construction section 110 within the range, and the construction section 110 is set to be located on the rear side (near the end point side in FIG. 1). Here, the terms “front” and “rear” are used for explanation, but the front and rear are based on the traveling direction originally set for the lane. That is, when the construction yard 100 is set in the up lane, the start side is “front” and the end side is “rear”, and when the construction yard 100 is set in the down lane, the end side is “front” and the start side is “ "Back". The construction section is a section divided in the road extension direction (that is, the bridge axis direction) in one lane, such as between the support point of the bridge (that is, between the spans), but the road width direction ( That is, it can also be a section divided in the direction perpendicular to the bridge axis). In other words, components such as floor slabs and main girders for one lane can be updated at a time, and the components can be updated after being divided in the road width direction (perpendicular to the bridge axis). .

(リフター)
図2は、リフターを示す図であり、(a)はその斜視図、(b)はその正面図である。リフター500は、市場に流通している(販売されレンタルされている)汎用品であり、図2(a)に示すように4本の支柱510と構台520を含んで構成される。これら4本の支柱510は、それぞれ複数(図では3つ)の分割体で形成され、上方の分割体が下方の分割体を収容できる構造となっている。そして油圧等を利用することで、上方の分割体から下方の分割体を出し入れすることができ、すなわち4本の支柱510は上下に伸び縮み(つまりジャッキアップとジャッキダウン)できる仕様となっている。また図2(b)に示すように、リフター500は正面視で門型であり、貨物自動車Trが通過可能な空間(以下、「通行空間540」という。)を備えている。この通行空間540は、(積み荷の大きさにもよるものの)リフター500が積荷を吊上げた状態でその積荷の下方を貨物自動車Trが通過することも可能な程度の広さである。なおリフター500は、市場に流通している汎用品を利用することもできるし、専用のものとして特別に製造したもの(注文製造したもの)を利用することもできる。
(Lifter)
2A and 2B are views showing the lifter, wherein FIG. 2A is a perspective view thereof, and FIG. 2B is a front view thereof. The lifter 500 is a general-purpose product distributed in the market (sold and rented), and includes four support columns 510 and a gantry 520 as shown in FIG. Each of these four support columns 510 is formed of a plurality of (three in the figure) divided bodies, and has a structure in which an upper divided body can accommodate a lower divided body. Then, by using hydraulic pressure or the like, the lower divided body can be taken in and out from the upper divided body, that is, the four columns 510 can be expanded and contracted vertically (that is, jacked up and jacked down). . Further, as shown in FIG. 2B, the lifter 500 has a gate shape when viewed from the front, and includes a space (hereinafter, referred to as “traffic space 540”) through which the cargo truck Tr can pass. The traffic space 540 is large enough to allow the lorry Tr to pass under the load when the lifter 500 lifts the load (depending on the size of the load). The lifter 500 can use a general-purpose product distributed in the market, or can use a specially manufactured product (custom-made product).

構台520は、4本の支柱510に連結されており、しかも最上部の分割体に連結されていることから、支柱510が上下するのに伴ってやはり構台520も上下する。また、図2(b)に示すように構台520の下面には、吊り係止具530が取り付けられている。この吊り係止具530は、撤去部材や新設部材を把持することのできる治具であり、例えば吊りフックを利用することができる。また、この構台520は2本の連結梁550を含んでおり、この2本の連結梁550は左右に伸縮可能な機能を有している。4本の支柱510うち2本ずつを1本の連結梁550で連結し、この連結梁550が油圧等によって水平方向(左右)に伸び縮みするわけである。もちろん、連結梁550の伸縮に伴ってこれに連結された支柱510も左右に移動する。   Since the gantry 520 is connected to the four support columns 510 and is connected to the uppermost divided body, the gantry 520 also moves up and down as the support column 510 moves up and down. Further, as shown in FIG. 2B, a suspension latch 530 is attached to the lower surface of the gantry 520. The suspension locking tool 530 is a jig that can grip a removal member or a new member, and for example, a suspension hook can be used. Further, the gantry 520 includes two connecting beams 550, and the two connecting beams 550 have a function capable of extending and contracting to the left and right. Two of the four columns 510 are connected by one connecting beam 550, and the connecting beam 550 is expanded and contracted in the horizontal direction (left and right) by hydraulic pressure or the like. Of course, as the connecting beam 550 expands and contracts, the support column 510 connected thereto also moves left and right.

連結梁550が左右に伸縮することから、極めて容易にリフター500を設置し、そして撤去することができる。図3は、貨物自動車Tr(トレーラー)に搭載されたリフター500が自立して設置される状況を示すステップ図である。図3(a)に示すようにリフター500は、貨物自動車Trの荷台に設置された受け台の上に載せられて工事ヤード100内の所定位置まで搬入される。その所定位置に貨物自動車Trが停止すると、図3(b)に示すように、受け台の上に載せられた状態で荷台の外側となるまで連結梁550を左右(図では上下)に伸ばす。そして連結梁550を左右に伸ばした状態で、図3(c)に示すように、その下端が路面に接地するまで4本の支柱510を下方に伸ばし、この結果、リフター500が路面上で自立する。リフター500が自立すると、貨物自動車Trはリフター500の下方から移動していく。なおリフター500を撤去して搬出する場合は、図3に示すステップを逆の手順(図3(c)→(a))で行うとよい。   Since the connecting beam 550 expands and contracts to the left and right, the lifter 500 can be installed and removed very easily. FIG. 3 is a step diagram showing a situation in which a lifter 500 mounted on a lorry Tr (trailer) is installed independently. As shown in FIG. 3A, the lifter 500 is placed on a cradle installed on the loading platform of the lorry Tr and is carried to a predetermined position in the construction yard 100. When the lorry Tr stops at the predetermined position, as shown in FIG. 3B, the connecting beam 550 is extended to the left and right (up and down in the drawing) until it reaches the outside of the loading platform while being placed on the receiving platform. Then, with the connecting beam 550 extended to the left and right, as shown in FIG. 3C, the four columns 510 are extended downward until the lower end of the connecting beam 550 comes in contact with the road surface. To do. When the lifter 500 is self-supporting, the lorry Tr moves from below the lifter 500. In addition, when removing the lifter 500 and carrying it out, it is good to perform the step shown in FIG. 3 in reverse order (FIG. 3 (c)-> (a)).

図2に示すように従来のリフター500は、吊り係止具530が構台520の下面に固定されており、吊り係止具530自体が独立して上下する(すなわち構台520に対して接近し離れる)ことができない。つまり、リフター500の吊り係止具530は撤去部材や新設部材を把持するだけであり、4本の支柱510が上下する(つまり構台520が上下する)ことによって、吊り係止具530に把持された撤去部材や新設部材を吊上げ、あるいは吊降ろす構造となっている。   As shown in FIG. 2, in the conventional lifter 500, the suspension latch 530 is fixed to the lower surface of the gantry 520, and the suspension latch 530 itself moves up and down independently (that is, approaches and separates from the gantry 520). ) I can't. That is, the suspension latch 530 of the lifter 500 only grips the removal member or the newly installed member, and is held by the suspension latch 530 when the four columns 510 move up and down (that is, the gantry 520 moves up and down). The removal member or the newly installed member is lifted or suspended.

2.揚重装置
次に本願発明の揚重装置について、図を参照しながら説明する。本願発明の揚重装置は、施工区間110で撤去された撤去部材を貨物自動車Trに積み込み、そして貨物自動車Trに搭載された新設部材を設置するものである。そのため、図1に示すように本願発明の揚重装置は、施工区間110の周辺(この図では後方)に設置される。本願発明の揚重装置は、従来用いられているリフターを利用した新規な揚重装置であり、大きく「架設桁型揚重装置200」と「ウィンチ型揚重装置300」の2種類を挙げることができる。架設桁型揚重装置200は複数のリフターに架設桁を架け渡した揚重装置であり、一方のウィンチ型揚重装置300はリフターに吊り荷機構を設置した揚重装置である。以下、それぞれについて順に説明する。
2. Lifting device Next, the lifting device of the present invention will be described with reference to the drawings. The lifting device of the present invention is configured to load the removal member removed in the construction section 110 onto the truck 4 and install a new member mounted on the truck 4. Therefore, as shown in FIG. 1, the lifting device of the present invention is installed around the construction section 110 (backward in this figure). The lifting device of the present invention is a novel lifting device using a lifter that has been used in the past. The lifting device can be roughly classified into two types: a “standing girder type lifting device 200” and a “winch type lifting device 300”. Can do. The construction girder type lifting device 200 is a lifting device that spans a plurality of lifters, and the winch type lifting device 300 is a lifting device in which a lifting mechanism is installed on the lifter. Each will be described in turn below.

(架設桁型揚重装置)
本願発明の架設桁型揚重装置200について説明するため、まずは架設桁型揚重装置200の構築方法について説明する。図4は、架設桁型揚重装置200の構築方法の主な工程を示すステップ図である。はじめに図4(a)に示すように2基のリフター500を設置する。このとき、撤去する構成部材の位置あるいは設置部材を設置する計画位置を挟むように2基のリフター500を設置する。なお、ここでは便宜上2基のリフター500を設置しているが、これに限らず3基以上のリフター500を設置することもできる。
(Early girder type lifting device)
In order to describe the installation girder type lifting apparatus 200 of the present invention, first, a construction method of the installation girder type lifting apparatus 200 will be described. FIG. 4 is a step diagram showing the main steps of the construction method of the erected girder type lifting device 200. First, as shown in FIG. 4A, two lifters 500 are installed. At this time, the two lifters 500 are installed so as to sandwich the position of the component member to be removed or the planned position for installing the installation member. In addition, although the two lifters 500 are installed here for convenience, not only this but three or more lifters 500 can also be installed.

リフター500を設置すると、架設桁210を完成させる。図4(b)に示すように、架設桁210が長くなる場合、複数(図では2つ)の分割部材210aを連結したものとすることができる。もちろんその延長によっては、分割することなく1本の部材で架設桁210を形成することもできる。また、架設桁210をラフタクレーンなどのブームと同様に伸縮可能な構造とすることもできる。伸縮可能な構造の架設桁210は、その断面を口字形の断面とし分割片(架設桁210を分割した部材)を収容する構造にするとよい。また、図5(a)に示すように架設桁210は、構造桁である本体桁211と、この本体桁211の下部に固定されるレール桁212によって形成される。なお本体桁211は、H形鋼やI形鋼などを用いた桁とすることもできるし、トラス形式の桁とすることもできる。一方のレール桁212は、H形鋼やI形鋼を用いた桁、あるいは山形鋼や溝形鋼を組み合わせた桁とすることができる。   When the lifter 500 is installed, the installation girder 210 is completed. As shown in FIG. 4B, when the installation girder 210 is long, a plurality (two in the figure) of divided members 210a can be connected. Of course, depending on the extension, the installation girder 210 can be formed of one member without being divided. Further, the erection girder 210 can be configured to be extendable and contractable in the same manner as a boom such as a raft crane. The erection girder 210 having a structure that can be expanded and contracted may have a cross-sectional shape in a mouth shape and accommodate a divided piece (a member obtained by dividing the erection girder 210). Further, as shown in FIG. 5A, the installation girder 210 is formed by a main body girder 211 that is a structural girder and a rail girder 212 that is fixed to the lower part of the main body girder 211. The main body girder 211 may be a girder using H-shaped steel or I-shaped steel, or a truss-shaped girder. One rail girder 212 can be a girder using H-shaped steel or I-shaped steel, or a girder combining angle steel or grooved steel.

分割部材210aを連結して架設桁210を完成させるには、図4(b)に示すように2つの分割部材210aを路面上に置いた台座の上に載置し、図4(c)に示すようにこれらを連結することで行われる。このとき、2つの分割部材210aの間に設置されるレール桁212の一部も合わせて設置される。なお吊り荷機構400は、あらかじめ架設桁210(レール桁212)に取り付けられた状態で現地に搬入することもできるし、架設桁210と吊り荷機構400を別々に搬入することとし、分割部材210aの連結に合わせて吊り荷機構400を架設桁210に取り付けることもできる。この吊り荷機構400は、吊りロープ410と、この吊りロープ410の先端に固定された吊り治具430、そして荷重を支持して吊り冶具430を上げ下げできる動力手段を有するものであり、いわゆるウィンチやホイストといった荷揚げ用の装置である。あるいは吊り荷機構400として、手動による動力手段を有するチェーンブロックを架設桁210(レール桁212)に取り付けることもできる。ただし吊り荷機構400は、架設桁210に沿って横行可能となるよう取り付けられる。具体的には図5(b)に示すように、吊り荷機構400が吊りロープ410の上端に取り付けられた移動式係止手段420を含んで構成されるものとし、吊り治具430で構成部材(撤去部材や新設部材)を把持したうえで、レール桁212に係止された移動式係止手段420の車輪がレール桁212に沿って移動できる構造とするとよい。さらに架設桁210に沿った横行(例えば、橋軸方向)可能に加え、吊り荷機構400が架設桁210直角方向(例えば、橋軸直角方向)に水平移動可能となる構造とすることもできる。これにより架設桁下方直下から離れたところにある部材も容易に吊上げ吊降しすることができる。   In order to complete the installation girder 210 by connecting the dividing members 210a, as shown in FIG. 4 (b), two dividing members 210a are placed on a pedestal placed on the road surface, as shown in FIG. 4 (c). This is done by connecting them as shown. At this time, part of the rail girder 212 installed between the two divided members 210a is also installed. The suspended load mechanism 400 can be carried into the site in a state of being attached to the erection girder 210 (rail girder 212) in advance, or the erected girder 210 and the suspended load mechanism 400 can be carried separately and divided members 210a. The suspended load mechanism 400 can be attached to the erection girder 210 in accordance with the connection. The suspension load mechanism 400 includes a suspension rope 410, a suspension jig 430 fixed to the tip of the suspension rope 410, and a power unit that can lift and lower the suspension jig 430 while supporting the load. It is a device for unloading such as a hoist. Alternatively, a chain block having manual power means can be attached to the erection beam 210 (rail beam 212) as the suspended load mechanism 400. However, the suspended load mechanism 400 is attached so that it can traverse along the erection girder 210. Specifically, as shown in FIG. 5 (b), the suspension mechanism 400 includes a movable locking means 420 attached to the upper end of the suspension rope 410, and the suspension jig 430 is a constituent member. A structure in which the wheels of the movable locking means 420 locked to the rail girder 212 can move along the rail girder 212 after gripping the (removal member or new member). Furthermore, in addition to being able to traverse along the installation girder 210 (for example, in the direction of the bridge axis), the suspended load mechanism 400 may be configured to be horizontally movable in a direction perpendicular to the installation girder 210 (for example, in the direction perpendicular to the bridge axis). This makes it possible to easily lift and suspend a member located away from directly below the installation girder.

ところで図2に示すようにリフター500は、既述したとおり、吊り係止具530が構台520の下面に固定されているため、吊り係止具530自体が独立して上下することができない。そこで、リフター500自体に(架設桁210に取り付けるものとは別に)、吊り荷機構400(ウィンチやホイストなど)を設置することもできる。この場合、吊り荷機構400の本体部を例えば構台520などに固定することによって、リフター500に吊り荷機構400を設置するとよい。リフター500が吊り荷機構400を具備することで、4本の支柱510を上下することなく吊り治具430が構台520に対して独立して上下することができるわけである。なお、リフター500が具備する吊り係止具530は、橋軸方向や橋軸直角方向に水平移動可能となる構造とすることもできる。これにより位置調整が自在となり、すなわち架設桁の下方であって架設桁軸直角方向にある部材も容易に吊上げ吊降しすることができる。   As shown in FIG. 2, the lifter 500 has the suspension latch 530 fixed to the lower surface of the gantry 520 as described above, and therefore the suspension latch 530 itself cannot be moved up and down independently. Therefore, a suspended load mechanism 400 (such as a winch or a hoist) can also be installed on the lifter 500 itself (aside from that attached to the erection girder 210). In this case, the suspension mechanism 400 may be installed on the lifter 500 by fixing the main body of the suspension mechanism 400 to the gantry 520, for example. Since the lifter 500 includes the lifting mechanism 400, the lifting jig 430 can be moved up and down independently of the gantry 520 without moving up and down the four columns 510. In addition, the suspension locking tool 530 provided in the lifter 500 may be configured to be horizontally movable in a bridge axis direction or a direction perpendicular to the bridge axis. As a result, the position can be adjusted freely, that is, a member below the installation girder and in a direction perpendicular to the installation girder axis can be easily lifted and hung.

架設桁210が完成し、吊り荷機構400が架設桁210に取り付けられると、架設桁210の両端を2基のリフター500の構台に固定したうえで、図4(d)に示すように2基のリフター500の支柱510を伸ばしてジャッキアップする。これにより、架設桁210は2基のリフター500間に架け渡され、施工区間110において架設桁型揚重装置200が構築される。   When the erection girder 210 is completed and the hanging load mechanism 400 is attached to the erection girder 210, both ends of the erection girder 210 are fixed to the gantry of the two lifters 500, and then, as shown in FIG. Extend the support column 510 of the lifter 500 and jack up. Thereby, the installation girder 210 is bridged between the two lifters 500, and the installation girder type lifting device 200 is constructed in the construction section 110.

(ウィンチ型揚重装置)
本願発明のウィンチ型揚重装置300は、リフター500に吊り荷機構400を設置した揚重装置である。ただし、架設桁型揚重装置200のように架設桁210が架け渡されることはない。ウィンチ型揚重装置300に設置される吊り荷機構400は、吊りロープ410と、この吊りロープ410の先端に固定された吊り治具、そして荷重を支持して吊り冶具を上げ下げできる動力手段を有するものであり、いわゆるウィンチやホイストといった荷揚げ用の装置である。吊り荷機構400の本体部を、例えば構台520などに固定することによって、リフター500に吊り荷機構400を設置することができる。
(Winch type lifting device)
The winch type lifting device 300 of the present invention is a lifting device in which a lifting mechanism 400 is installed on a lifter 500. However, unlike the erection girder type lifting device 200, the erection girder 210 is not bridged. The hanging load mechanism 400 installed in the winch type lifting device 300 includes a hanging rope 410, a hanging jig fixed to the tip of the hanging rope 410, and a power unit that can lift and lower the hanging jig while supporting the load. It is a device for unloading such as a so-called winch or hoist. The suspension mechanism 400 can be installed on the lifter 500 by fixing the main body of the suspension mechanism 400 to the gantry 520, for example.

3.揚重装置を用いた部材更新方法
続いて本願発明の揚重装置を用いた部材更新方法について、揚重装置として架設桁型揚重装置200を用いた場合と、ウィンチ型揚重装置300を利用した場合、さらに4基以上のリフター500からなる架設桁型揚重装置200を用いた場合に分けて説明する。
3. Member Updating Method Using Lifting Device Subsequently, with regard to the member updating method using the lifting device of the present invention, the case where the erected girder type lifting device 200 is used as the lifting device and the winch type lifting device 300 is used. In this case, the explanation will be divided into the case where the erected girder type lifting device 200 including four or more lifters 500 is used.

(架設桁型揚重装置を用いた場合)
図6は、架設桁型揚重装置200を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図である。工事を始めるに当たって、まずは図1に示すように工事ヤード100を設定する(Step110)。なお、施工区間110を含むように、しかも施工区間110が全体のうち後方寄りに位置するように工事ヤード100を設定する。工事ヤード100の設定は、例えば周囲に仮囲いを設置することで明示するとよい。工事ヤード100を設定すると、リフター500を搭載した貨物自動車Trを工事ヤード100内に進入させる。このとき貨物自動車Trは、工事ヤード100を設定した車線を通行して、すなわち図1に示す他の車線を通ることなく(例えば横入りすることなく)、後方側(この場合、終点側)から工事ヤード100内に進入させる。
(When using a girder type lifting device)
FIG. 6 is a flowchart showing the flow of the main steps of the member updating method of the present invention when the erected girder type lifting device 200 is used. In starting construction, first, a construction yard 100 is set as shown in FIG. 1 (Step 110). The construction yard 100 is set so that the construction section 110 is included and the construction section 110 is located closer to the rear of the whole. The setting of the construction yard 100 may be clearly indicated by, for example, installing a temporary enclosure around it. When the construction yard 100 is set, the lorry Tr equipped with the lifter 500 enters the construction yard 100. At this time, the lorry Tr passes through the lane in which the construction yard 100 is set, that is, from the rear side (in this case, the end point side) without passing through the other lanes shown in FIG. Enter the construction yard 100.

貨物自動車Trが、施工区間110周辺の所定位置で停止すると、架設桁型揚重装置200を構築する(Step210)。具体的には、図3や図4(a)に示すように施工区間110を挟むように2基のリフター500を設置し(Step211)、図4(b)〜(c)に示すように架設桁210を組立てる(Step212)。なお、伸縮可能な構造の架設桁210を採用すると、分割部材210aを連結して架設桁210を形成するケースに比べ、架設桁210の組立工程は簡略化される。架設桁210を組立てると、あらかじめ吊り荷機構400が取り付けられた架設桁210が搬入された場合は架設桁の設置工程(Step214)に進み、架設桁210と吊り荷機構400が別々に搬入された場合は架設桁210に横行可能に吊り荷機構400を取り付ける(Step213)。そして、架設桁210の両端を2基のリフター500の構台520に固定した(Step214)うえで、図4(d)に示すように2基のリフター500の支柱510を伸ばしてジャッキアップし架設桁型揚重装置200が構築される。   When the lorry Tr stops at a predetermined position around the construction section 110, the erection girder lifting device 200 is constructed (Step 210). Specifically, as shown in FIG. 3 and FIG. 4 (a), two lifters 500 are installed so as to sandwich the construction section 110 (Step 211), and installed as shown in FIGS. 4 (b) to (c). The girder 210 is assembled (Step 212). In addition, when the installation girder 210 having a structure that can be expanded and contracted is adopted, the assembly process of the installation girder 210 is simplified as compared with a case in which the dividing member 210a is connected to form the installation girder 210. When the erection girder 210 is assembled, if the erection girder 210 to which the suspension mechanism 400 is attached in advance is carried in, the process proceeds to the installation process of the erection girder (Step 214). In this case, the suspension mechanism 400 is attached to the erection girder 210 so as to traverse (Step 213). Then, both ends of the erection girder 210 are fixed to the gantry 520 of the two lifters 500 (Step 214), and then, as shown in FIG. The mold lifting device 200 is constructed.

ここまでの準備が整うと、施工区間110で計画された構成部材を道路橋本体から取り外す(Step220)。このとき、カッターやワイヤーソー、ガス切断機などの機材を用いて道路橋から構成部材を切断したうえで、吊り荷機構400による巻き上げ、あるいはリフター510自身の上下伸縮(つまり支柱510の伸縮によるジャッキダウンとジャッキアップ)によって構成部材を取り外すとよい。なお、既に構成部材が撤去され、撤去部材が施工区間110周辺に仮置きされている場合は部材の撤去工程(Step220)を省略することができる。構成部材が撤去されると(あるいは撤去部材が用意されると)、架設桁型揚重装置200が撤去部材を吊上げ、施工区間110の前方まで後退してきた貨物自動車Trに搭載する(Step230)。   When the preparation up to here is completed, the components planned in the construction section 110 are removed from the road bridge body (Step 220). At this time, after cutting structural members from the road bridge using equipment such as a cutter, a wire saw, a gas cutter, etc., the hoisting by the lifting mechanism 400 or the vertical extension / contraction of the lifter 510 itself (that is, the jack by extension / contraction of the column 510) The components may be removed by down and jacking up. In addition, when a structural member is already removed and the removed member is temporarily placed around the construction section 110, the member removal step (Step 220) can be omitted. When the component member is removed (or when the removal member is prepared), the erection girder type lifting device 200 lifts the removal member and mounts it on the lorry Tr that has moved back to the front of the construction section 110 (Step 230).

図7(a)は架設桁型揚重装置200によって撤去部材を吊上げる工程を示すステップ図であり、図7(b)は架設桁型揚重装置200によって吊上げた撤去部材を貨物自動車Trに搭載する工程を示すステップ図である。この図に示すように、吊り荷機構400の吊り治具430によって撤去部材が把持され、その状態で吊り荷機構400の動力手段によって撤去部材が吊上げられ、さらに撤去部材を吊上げた状態で吊り荷機構400が架設桁210に沿って移動することによって、前方で待機する貨物自動車Trに撤去部材を搭載する。なお、架設桁型揚重装置200による撤去部材の吊上げや吊降ろしは、リフター510自身の上下伸縮(つまり支柱510の伸縮によるジャッキダウンとジャッキアップ)によって行うこともできるし、吊り荷機構400とリフター510を併用して行うこともできる。   FIG. 7A is a step diagram showing the process of lifting the removal member by the erection girder lifting device 200, and FIG. 7B shows the removal member lifted by the erection girder lifting device 200 on the lorry Tr. It is a step figure which shows the process to mount. As shown in this figure, the removal member is gripped by the suspension jig 430 of the suspension mechanism 400, the removal member is lifted by the power means of the suspension mechanism 400 in that state, and the suspension member is suspended in the state where the removal member is lifted. As the mechanism 400 moves along the erection girder 210, the removal member is mounted on the lorry Tr waiting in front. The lifting and lowering of the removal member by the erection girder type lifting device 200 can be performed by vertically extending and lowering the lifter 510 itself (that is, jacking down and jacking up due to expansion and contraction of the support column 510). The lifter 510 can be used in combination.

また、ウィンチやホイストといった動力付きの荷揚げ用の装置に代えて、チェーンブロックを吊り荷機構400として利用する場合、撤去部材をチェーブロックの吊り治具430で把持し、人の力でチェーンを巻上げることによって撤去部材を吊上げ(例えば50cm程度)、その状態で撤去部材を一方(前方側)のリフター500の下方まで架設桁210に沿って横移動させる。そして、リフター500がジャッキアップすることで、撤去部材を相当の高さ(例えば3m)まで吊上げ、その後通行空間540内に移動してきた貨物自動車Trの荷台に撤去部材を吊降ろす。   In addition, when the chain block is used as the lifting mechanism 400 instead of a powered lifting device such as a winch or a hoist, the removal member is held by the chain block lifting jig 430 and the chain is wound by human power. The removal member is lifted by raising (for example, about 50 cm), and in this state, the removal member is moved laterally along the installation girder 210 to the lower side of one (front side) lifter 500. Then, when the lifter 500 is jacked up, the removal member is lifted to a considerable height (for example, 3 m), and then the removal member is suspended from the loading platform of the lorry Tr that has moved into the traffic space 540.

次に、新設部材を搭載した貨物自動車Trが施工区間110の前方まで後退してくると、架設桁型揚重装置200が施工区間110の計画位置に新設部材を設置する(Step240)。図8(a)は、貨物自動車Trに搭載された新設部材を架設桁型揚重装置200によって吊上げる工程を示すステップ図であり、(b)は架設桁型揚重装置200によって吊上げた新設部材を計画位置に設置する工程を示すステップ図である。この図に示すように、貨物自動車Trに搭載された新設部材は吊り荷機構400の吊り治具430によって把持され、その状態で吊り荷機構400の動力手段によって新設部材が吊上げられ、さらに新設部材を吊上げた状態で吊り荷機構400が架設桁210に沿って計画位置まで移動することによって、施工区間110の計画位置に新設部材を吊降ろして設置する。なお、架設桁型揚重装置200による新設部材の吊上げや吊降ろしは、リフター510自身の上下伸縮(つまり支柱510の伸縮によるジャッキダウンとジャッキアップ)によって行うこともできるし、吊り荷機構400とリフター510を併用して行うこともできる。   Next, when the lorry Tr loaded with the new member moves back to the front of the construction section 110, the erection girder lifting device 200 installs the new member at the planned position of the construction section 110 (Step 240). FIG. 8A is a step diagram illustrating a process of lifting a newly installed member mounted on the truck Tr with the erection girder lifting device 200, and FIG. It is a step figure showing the process of installing a member in a plan position. As shown in this figure, the newly installed member mounted on the lorry Tr is gripped by the suspension jig 430 of the suspension mechanism 400, and in this state, the newly installed member is lifted by the power means of the suspension mechanism 400. The suspended load mechanism 400 moves to the planned position along the erection girder 210 in a state in which the new member is suspended and installed at the planned position in the construction section 110. The lifting and lowering of the newly installed member by the erection girder type lifting device 200 can be performed by vertically extending and lowering the lifter 510 itself (that is, jacking down and jacking up due to expansion and contraction of the support column 510). The lifter 510 can be used in combination.

新設部材を設置する場合も、チェーンブロックを吊り荷機構400とすることができる。すなわち、例えば路面上に仮置きされた新設部材をチェーブロックの吊り治具430で把持し、人の力でチェーンを巻上げることによって新設部材を吊上げ(例えば50cm程度)、その状態で新設部材を計画位置まで架設桁210に沿って横移動させる。そして、リフター500がジャッキダウンすることで、計画位置に新設部材を吊降ろす。   Even when a new member is installed, the chain block can be the suspended load mechanism 400. That is, for example, a newly installed member temporarily placed on the road surface is gripped by the chain block lifting jig 430 and the chain is lifted by human power to lift the newly installed member (for example, about 50 cm). Move horizontally along the erection girder 210 to the planned position. Then, when the lifter 500 is jacked down, the new member is suspended at the planned position.

撤去部材は、撤去するたびに貨物自動車Trに搭載することもできるし、図9(a)に示すように工事ヤード100内の所定場所(例えば、施工区間110の後方側)に仮置きしておくこともできる。同様に新設部材は、貨物自動車Trから吊上げるたびに計画位置に設置することもできるし、図9(b)に示すように工事ヤード100内の所定場所(例えば、施工区間110の後方側)に仮置きしておくこともできる。   The removal member can be mounted on the lorry Tr every time it is removed, or temporarily placed at a predetermined location in the construction yard 100 (for example, the rear side of the construction section 110) as shown in FIG. It can also be left. Similarly, the new member can be installed at the planned position every time it is lifted from the lorry Tr, or as shown in FIG. 9B, a predetermined location in the construction yard 100 (for example, the rear side of the construction section 110). It can also be placed temporarily.

ここまでの部材撤去工程(Step220)〜新設部材設置工程(Step240)が計画された分だけ繰り返し行われると、後片付けを行って(Step120)作業を完了する。   When the member removal step (Step 220) to the new member installation step (Step 240) so far are repeated for the planned amount, the post-cleaning is performed (Step 120) to complete the operation.

(ウィンチ型揚重装置を用いた場合)
図10は、ウィンチ型揚重装置300を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図である。架設桁型揚重装置200を用いた場合と同様、工事ヤード100を設定すると(Step110)、2基のウィンチ型揚重装置300を施工区間110の周辺に設置する(Step310)。ここでは、2基のウィンチ型揚重装置300を区別するため、工事ヤード100のうち前方に設置されたものを第1のウィンチ型揚重装置300aと、後方に設置されたものを第2のウィンチ型揚重装置300bということとする。
(When using a winch type lifting device)
FIG. 10 is a flowchart showing the flow of the main steps of the member updating method of the present invention when the winch type lifting device 300 is used. When the construction yard 100 is set (Step 110), the two winch type lifting devices 300 are installed around the construction section 110 (Step 310), as in the case of using the erection girder type lifting device 200. Here, in order to distinguish between the two winch type lifting devices 300, the one installed in the front of the construction yard 100 is the first winch type lifting device 300a and the one installed in the rear is the second. It is assumed that the winch type lifting device 300b.

第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300bが設置されると、施工区間110で計画され、事前に道路橋から切断された構成部材を撤去する(Step320)。なお、既に構成部材が撤去され、撤去部材が施工区間110周辺に仮置きされている場合は部材の撤去工程(Step320)を省略することができる。構成部材が撤去されると(あるいは撤去部材が用意されると)、ウィンチ型揚重装置300が撤去部材を吊上げ、施工区間110の前方まで後退してきた貨物自動車Trに搭載する(Step330)。   When the first winch type lifting device 300a and the second winch type lifting device 300b are installed, the components planned in the construction section 110 and previously cut from the road bridge are removed (Step 320). In addition, when a structural member is already removed and the removed member is temporarily placed around the construction section 110, the member removal step (Step 320) can be omitted. When the component member is removed (or when the removal member is prepared), the winch type lifting device 300 lifts the removal member and mounts it on the lorry Tr that has moved back to the front of the construction section 110 (Step 330).

図11は、ウィンチ型揚重装置300(第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300b)によって撤去部材を貨物自動車Trに搭載する工程を示すステップ図である。なお既述したとおり、ウィンチ型揚重装置300の吊り荷機構400は、吊りロープ410(ワイヤーロープやチェーンなど)と、この吊りロープ410の先端に固定された吊り治具(フックなど)、そして動力手段を有するものであり、いわゆるウィンチやホイストといった荷揚げ用の装置である。すなわち吊り荷機構400の動力手段で吊りロープ410を巻上げあるいは巻下げることによって、吊り治具に把持された構成部材(撤去部材や新設部材)を吊上げ、あるいは吊降ろすことができる。なお、2基のウィンチ型揚重装置300を利用して構成部材を吊上げ、あるいは吊降ろす際に、構成部材の重量によってはそれぞれのウィンチ型揚重装置300に相当の水平力が作用することがある。その場合は、ウィンチ型揚重装置300が転倒しないようにリフター500の支柱510を路面上で堅固に固定し、さらに4本の支柱510を補強するとよい。   FIG. 11 is a step diagram showing a process of mounting the removal member on the lorry Tr using the winch type lifting device 300 (the first winch type lifting device 300a and the second winch type lifting device 300b). As described above, the hanging load mechanism 400 of the winch type lifting device 300 includes the hanging rope 410 (wire rope, chain, etc.), a hanging jig (hook, etc.) fixed to the tip of the hanging rope 410, and It has power means and is a device for unloading such as a so-called winch or hoist. That is, by lifting or lowering the suspension rope 410 by the power means of the suspension load mechanism 400, the constituent members (removal member or new member) held by the suspension jig can be lifted or suspended. In addition, when a component member is lifted or suspended using the two winch type lifting devices 300, a considerable horizontal force may act on each winch type lifting device 300 depending on the weight of the component member. is there. In that case, it is advisable to firmly fix the pillars 510 of the lifter 500 on the road surface and further reinforce the four pillars 510 so that the winch type lifting device 300 does not fall down.

図11(a)に示すように、撤去部材を挟むように所定間隔を設けたうえで第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300bを設置する。また、図11(d)に示すように第1のウィンチ型揚重装置300aは、後に貨物自動車Trが停止する位置に設置するとよい。第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300bを設置すると、両方の吊りロープ410を巻下げるとともに、両方の吊り治具で撤去部材を把持する。その状態で両方の動力手段によって両方の吊りロープ410を同等に巻上げ、第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300bのほぼ中間に位置するように撤去部材を吊上げる(Step331)。   As shown in FIG. 11 (a), the first winch type lifting device 300a and the second winch type lifting device 300b are installed after providing a predetermined interval so as to sandwich the removal member. Moreover, as shown in FIG.11 (d), it is good to install the 1st winch type lifting apparatus 300a in the position where the lorry Tr stops later. When the first winch type lifting device 300a and the second winch type lifting device 300b are installed, both suspension ropes 410 are lowered and the removal member is gripped by both suspension jigs. In this state, both suspension ropes 410 are wound up equally by both power means, and the removal member is lifted so as to be positioned approximately in the middle between the first winch type lifting device 300a and the second winch type lifting device 300b. (Step 331).

撤去部材を吊上げると、図11(c)に示すように撤去部材を第1のウィンチ型揚重装置300aの下方に移動させる(Step332)。具体的には、第1のウィンチ型揚重装置300aの動力手段によって吊りロープ410を巻上げた状態(つまり撤去部材を吊上げた状態)を維持しつつ、第2のウィンチ型揚重装置300bの動力手段によって吊りロープ410を巻下げる(つまり吊りロープ410を緩めて伸ばしていく)。これにより、撤去部材は第1のウィンチ型揚重装置300aの方に引っ張られて、最終的には第1のウィンチ型揚重装置300aの下方に移動するわけである。   When the removal member is lifted, the removal member is moved below the first winch type lifting device 300a as shown in FIG. 11C (Step 332). Specifically, the power of the second winch type lifting device 300b is maintained while the suspension rope 410 is wound up by the power means of the first winch type lifting device 300a (that is, the removal member is lifted). The suspension rope 410 is unwound by means (that is, the suspension rope 410 is loosened and extended). As a result, the removal member is pulled toward the first winch type lifting device 300a, and finally moves below the first winch type lifting device 300a.

撤去部材を第1のウィンチ型揚重装置300aの下方に移動させると、図11(d)に示すように、荷台が通行空間540内に入るよう貨物自動車Trを進入させ(後退させ)、第1のウィンチ型揚重装置300aの動力手段によって吊りロープ410を巻下げる(つまり吊りロープ410を緩めて伸ばしていく)ことで、撤去部材を貨物自動車Trに搭載し(Step333)、第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300bの吊り治具による撤去部材の把持を解除する。   When the removal member is moved below the first winch type lifting device 300a, as shown in FIG. 11 (d), the lorry Tr is entered (retracted) so that the cargo bed enters the passage space 540, and the first The hoisting rope 410 is unwound by the power means of the first winch type lifting device 300a (that is, the hoisting rope 410 is loosened and extended), whereby the removal member is mounted on the lorry Tr (Step 333), and the first winch The holding of the removal member by the lifting jigs of the mold lifting device 300a and the second winch type lifting device 300b is released.

次に、新設部材を搭載した貨物自動車Trが施工区間110の前方まで後退してくると、ウィンチ型揚重装置300が施工区間110の計画位置に新設部材を設置する(Step340)。ウィンチ型揚重装置300によって新設部材を設置する場合、この計画位置に第1のウィンチ型揚重装置300aが設置され、第1の揚重装置300aから離れた位置に第2のウィンチ型揚重装置300bが設置される。あるいは第2のウィンチ型揚重装置300bを計画位置に設置し、第2の揚重装置300bから離れた位置に第1のウィンチ型揚重装置300aを設置してもよい。このように第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300bを設置すると、両方の吊りロープ410を巻下げるとともに、両方の吊り治具で貨物自動車Trに搭載された新設部材を把持する。その状態で両方の動力手段によって両方の吊りロープ410を同等に巻上げ、第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300aのほぼ中間に位置するように新設部材を吊上げる(Step341)。   Next, when the lorry Tr loaded with the new member moves back to the front of the construction section 110, the winch-type lifting device 300 installs the new member at the planned position of the construction section 110 (Step 340). When a new member is installed by the winch type lifting device 300, the first winch type lifting device 300a is installed at the planned position, and the second winch type lifting device is installed at a position away from the first lifting device 300a. A device 300b is installed. Or the 2nd winch type lifting apparatus 300b may be installed in a plan position, and the 1st winch type lifting apparatus 300a may be installed in the position away from the 2nd lifting apparatus 300b. When the first winch type lifting device 300a and the second winch type lifting device 300b are installed in this way, both the suspension ropes 410 are unwound and a new installation mounted on the lorry Tr with both suspension jigs. Hold the member. In this state, both suspension ropes 410 are equally wound by both power means, and the new member is lifted so as to be positioned approximately in the middle between the first winch type lifting device 300a and the second winch type lifting device 300a. (Step 341).

新設部材を吊上げると、新設部材を第1のウィンチ型揚重装置300aの下方に移動させる(Step342)。具体的には、第1のウィンチ型揚重装置300aの動力手段によって吊りロープ410を巻上げた状態(つまり新設部材を吊上げた状態)を維持しつつ、第2のウィンチ型揚重装置300bの動力手段によって吊りロープ410を巻下げる(つまり吊りロープ410を緩めて伸ばしていく)。これにより、新設部材は第1のウィンチ型揚重装置300aの方に引っ張られて、最終的には第1のウィンチ型揚重装置300aの下方に移動するわけである。   When the newly installed member is lifted, the newly installed member is moved below the first winch type lifting device 300a (Step 342). Specifically, the power of the second winch type lifting device 300b is maintained while the suspension rope 410 is wound up by the power means of the first winch type lifting device 300a (that is, the state where the newly installed member is lifted). The suspension rope 410 is unwound by means (that is, the suspension rope 410 is loosened and extended). As a result, the new member is pulled toward the first winch type lifting device 300a, and finally moves below the first winch type lifting device 300a.

新設部材を第1のウィンチ型揚重装置300aの下方に移動させると、第1のウィンチ型揚重装置300aの動力手段によって吊りロープ410を巻下げる(つまり吊りロープ410を緩めて伸ばしていく)ことで、新設部材を計画位置に設置し(Step343)、第1のウィンチ型揚重装置300aと第2のウィンチ型揚重装置300b吊り治具による新設部材の把持を解除する。   When the new member is moved below the first winch type lifting device 300a, the suspension rope 410 is unwound by the power means of the first winch type lifting device 300a (that is, the suspension rope 410 is loosened and extended). Thus, the new member is installed at the planned position (Step 343), and the gripping of the new member by the first winch type lifting device 300a and the second winch type lifting device 300b lifting jig is released.

ここまでの部材撤去工程(Step320)〜新設部材設置工程(Step340)が計画された分だけ繰り返し行われると、後片付けを行って(Step120)作業を完了する。   When the member removal step (Step 320) to the new member installation step (Step 340) up to here are repeated for the planned amount, the post-cleaning is performed (Step 120) to complete the operation.

(4基以上のリフターからなる架設桁型揚重装置を用いた場合)
4基以上のリフターからなる架設桁型揚重装置200を用いた部材更新方法は、橋軸方向に長尺の構成部材を更新する際に特に有効であることから、便宜上ここでは、4基以上のリフターからなる架設桁型揚重装置200のことを「長尺架設桁型揚重装置200」ということとする。また長尺架設桁型揚重装置200を用いた部材更新方法は、さらに「2つのリフター500間に架設桁210が架け渡された長尺架設桁型揚重装置200を用いるケース」と、「3以上のリフター500間に架設桁210が架け渡された長尺架設桁型揚重装置200を用いるケース」に大別することができる。そこで、2つのリフター500間に架設桁210が架け渡された長尺架設桁型揚重装置200のことを「2基式長尺架設桁型揚重装置200」と、3以上のリフター500間に架設桁210が架け渡された長尺架設桁型揚重装置200のことを「多基式長尺架設桁型揚重装置200」ということとする。以下、2基式長尺架設桁型揚重装置200を用いたケースと、多基式長尺架設桁型揚重装置200を用いたケースについて順に説明する。
(When using a girder type lifting device consisting of 4 or more lifters)
The member updating method using the erected girder type lifting device 200 composed of four or more lifters is particularly effective when updating a long component in the bridge axis direction. The erection girder type lifting device 200 composed of the lifter is referred to as a “long erection girder type lifting device 200”. Further, the member renewal method using the long erection girder type lifting device 200 further includes “a case using the long erection girder type lifting device 200 in which the erection girder 210 is bridged between two lifters 500” and “ It can be roughly classified into “a case using a long erection girder type lifting device 200 in which erection girder 210 is bridged between three or more lifters 500”. Therefore, the long erection girder type lifting device 200 in which the erection girder 210 is bridged between the two lifters 500 is referred to as “two-type long erection girder lifting device 200” and three or more lifters 500. The long erection girder type lifting device 200 in which the erection girder 210 is bridged is referred to as a “multi-base long erection girder lifting device 200”. Hereinafter, a case using the two-type long erection girder lifting device 200 and a case using the multi-base long erection girder lifting device 200 will be described in order.

図13は、2基式長尺架設桁型揚重装置200を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図である。工事を始めるに当たって、既述したとおりはじめに工事ヤード100を設定する(Step110)。工事ヤード100を設定すると、図14(a)に示すようにリフター500を搭載した4台の貨物自動車Trを工事ヤード100内に進入させる。このとき貨物自動車Trは、工事ヤード100を設定した車線を通行して、すなわち図1に示す他の車線を通ることなく(例えば横入りすることなく)、後方側(この場合、終点側)から工事ヤード100内に進入させる。   FIG. 13 is a flowchart showing the flow of the main steps of the member updating method of the present invention when the two long elongate girder type lifting device 200 is used. In starting construction, the construction yard 100 is set first as described above (Step 110). When the construction yard 100 is set, as shown in FIG. 14 (a), four trucks Tr mounted with the lifter 500 enter the construction yard 100. At this time, the lorry Tr passes through the lane in which the construction yard 100 is set, that is, from the rear side (in this case, the end point side) without passing through the other lanes shown in FIG. Enter the construction yard 100.

図14(b)に示すように貨物自動車Trが、施工区間110周辺の所定位置で停止すると、2基式長尺架設桁型揚重装置200を構築する(Step410)。以下、2基式長尺架設桁型揚重装置200を構築する手法について具体的に説明する。まず図14(c)に示すように、施工区間110を挟むように2基ずつのリフター500を設置する(Step411)。なお便宜上ここでは、最も前方(図14では最も左)に位置するリフター500のことを「第1副リフター500sa」、最も後方(図14では最も右)に位置するリフター500のことを「第2副リフター500sb」ということとし、さらに第1副リフター500saと施工区間110の間(図14では左から2番目)に位置するリフター500のことを「第1主リフター500ma」、第2副リフター500sbと施工区間110の間(図14では右から2番目)に位置するリフター500のことを「第2主リフター500mb」ということとする。   As shown in FIG. 14 (b), when the lorry Tr stops at a predetermined position around the construction section 110, the two-type long erected girder lifting device 200 is constructed (Step 410). Hereinafter, a method for constructing the two long span girder type lifting device 200 will be described in detail. First, as shown in FIG. 14C, two lifters 500 are installed so as to sandwich the construction section 110 (Step 411). For convenience, here, the lifter 500 located in the foremost position (leftmost in FIG. 14) is referred to as “first sub-lifter 500sa”, and the lifter 500 located in the rearmost position (rightmost in FIG. 14) is referred to as “second lifter”. The sub-lifter 500 sb ”, and the lifter 500 positioned between the first sub-lifter 500 sa and the construction section 110 (second from the left in FIG. 14) are referred to as“ first main lifter 500 ma ”and second sub-lifter 500 sb. The lifter 500 located between the construction section 110 and the construction section 110 (second from the right in FIG. 14) is referred to as a “second main lifter 500mb”.

所定位置に4基のリフター500を設置すると、図14(d)に示すように分割部材210aを搭載した2台の貨物自動車Trを第1主リフター500maと第2主リフター500mbの間(つまり、施工区間110)まで進入させ、貨物自動車Tr上で分割部材210aを連結して架設桁210を形成する(Step412)とともに、架設桁210に横行可能に2つの吊り荷機構400を取り付ける(Step413)。もちろん、貨物自動車Tr上ではなく地上で分割部材210aの連結作業を行うこともできるし、分割することなく1本の架設桁210を用いることもできるし、あらかじめ架設桁210に吊り荷機構400を取り付けたうえで搬入することもできる。そして図15(a)に示すように、架設桁210の両端を伸ばし、第1主リフター500maと第2主リフター500mbをジャッキダウンしてそれぞれの構台を下げ、架設桁210の一端(図15では左側)を第1主リフター500maの構台に固定し、他端(図15では右側)を第2主リフター500mbの構台に固定する(Step414)。架設桁210を第1主リフター500maと第2主リフター500mbに固定すると、図15(b)に示すように第1主リフター500maと第2主リフター500mbをジャッキアップして架設桁210を所定の高さに持ち上げることで、2台の貨物自動車Trを退出させる。このとき、貨物自動車TrのひとつであるドーリーDL(以下、このドーリーを「第1ドーリーDL01」という。)を工事ヤード100内に進入させ、施工区間110の前方で待機させる。   When four lifters 500 are installed at predetermined positions, as shown in FIG. 14 (d), two lorry trucks Tr mounted with split members 210a are placed between the first main lifter 500ma and the second main lifter 500mb (that is, The construction section 110) is entered, and the split member 210a is connected on the cargo truck Tr to form the erection girder 210 (Step 412), and the two suspension mechanisms 400 are attached to the erection girder 210 so as to traverse (Step 413). Of course, it is possible to connect the dividing member 210a on the ground instead of on the lorry Tr. In addition, one erection girder 210 can be used without being divided, and the suspension mechanism 400 is attached to the erection girder 210 in advance. It can also be carried in after installation. Then, as shown in FIG. 15 (a), both ends of the installation girder 210 are extended, the first main lifter 500ma and the second main lifter 500mb are jacked down to lower the respective gantry, and one end of the installation girder 210 (in FIG. 15) The left side is fixed to the gantry of the first main lifter 500ma, and the other end (right side in FIG. 15) is fixed to the gantry of the second main lifter 500mb (Step 414). When the installation girder 210 is fixed to the first main lifter 500ma and the second main lifter 500mb, the first main lifter 500ma and the second main lifter 500mb are jacked up as shown in FIG. By lifting the vehicle up to the height, the two trucks Tr are exited. At this time, a dolly DL (hereinafter, this dolly is referred to as a “first dolly DL01”), which is one of the trucks Tr, enters the construction yard 100 and waits in front of the construction section 110.

ここまでの準備が整うと、施工区間110で計画され、事前に道路橋から切断された構成部材を道路橋本体から取り外す(Step420)。なお、既に構成部材が撤去され、撤去部材が施工区間110周辺に仮置きされている場合は部材の撤去工程(Step420)を省略することができる。構成部材が撤去されると(あるいは撤去部材が用意されると)、図15(c)に示すように第1主リフター500maと第2主リフター500mbがジャッキダウンし、架設桁210に取り付けられた2つの吊り荷機構400によって撤去部材を把持し、その状態で図15(d)に示すように第1主リフター500maと第2主リフター500mbがジャッキアップして撤去部材を所定の高さまで吊上げる。なお、撤去部材の吊上げや吊降しは、第1主リフター500maと第2主リフター500mbのジャッキダウン及びジャッキアップによるほか、ウィンチやホイストといった吊り荷機構400の動力手段によって行うこともできるし、チェーンブロック(吊り荷機構400)を利用した人力によることも、あるいはこれらを併用して行うこともできる。   When the preparation up to this point is completed, the components planned in the construction section 110 and cut in advance from the road bridge are removed from the road bridge body (Step 420). In addition, when a structural member is already removed and the removal member is temporarily placed around the construction section 110, the member removal step (Step 420) can be omitted. When the component member is removed (or when the removal member is prepared), the first main lifter 500ma and the second main lifter 500mb are jacked down and attached to the installation beam 210 as shown in FIG. The removal member is held by the two hanging load mechanisms 400, and in this state, as shown in FIG. 15D, the first main lifter 500ma and the second main lifter 500mb are jacked up to lift the removal member to a predetermined height. . The lifting and lifting of the removal member can be performed by means of jacking down and jacking up the first main lifter 500ma and the second main lifter 500mb, or by power means of the lifting mechanism 400 such as a winch or hoist, It can be performed by human power using a chain block (suspended load mechanism 400) or by using them together.

撤去部材を吊上げると、図16(a)に示すように、撤去部材の前方端が第1主リフター500maの下方に位置するまで、撤去部材を前方に移動させる。詳しくは、撤去部材を把持した2つの吊り荷機構400を、架設桁210に沿って前方に横行させることによって、撤去部材を前方に移動させるわけである。撤去部材が所定位置まで移動すると、第1主リフター500maの下方で待機していた第1ドーリーDL01に撤去部材の前方端を吊降ろし、前方側の吊り荷機構400による撤去部材の把持を解除する。これにより、撤去部材の前方端の支持を前方側の吊り荷機構400から第1ドーリーDL01に移行し、すなわち後方側の吊り荷機構400と第1ドーリーDL01によって撤去部材を支持する(Step430)。   When the removal member is lifted, as shown in FIG. 16A, the removal member is moved forward until the front end of the removal member is positioned below the first main lifter 500ma. Specifically, the removal member is moved forward by causing the two suspended load mechanisms 400 holding the removal member to traverse forward along the installation girder 210. When the removal member moves to a predetermined position, the front end of the removal member is suspended from the first dolly DL01 that has been waiting under the first main lifter 500ma, and the grasping of the removal member by the lifting mechanism 400 on the front side is released. . Thereby, the support of the front end of the removal member is shifted from the front suspension mechanism 400 to the first dolly DL01, that is, the removal member is supported by the rear suspension mechanism 400 and the first dolly DL01 (Step 430).

後方側の吊り荷機構400と第1ドーリーDL01によって撤去部材を支持すると、図16(b)に示すように、撤去部材の一部が第1副リフター500saの下方に位置するまで、撤去部材を前方に移動させる。詳しくは、撤去部材の前方端を搭載した第1ドーリーDL01が移動(前進)するとともに、撤去部材を把持した後方側の吊り荷機構400を架設桁210に沿って前方に横行させることによって、撤去部材を前方に移動させるわけである。撤去部材が所定位置まで移動すると、第1副リフター500saの吊り係止具530によって撤去部材の一部(前方側)を把持し、第1ドーリーDL01による撤去部材の支持を解除する。これにより、撤去部材の前方側の支持を第1ドーリーDL01から第1副リフター500saに移行し、すなわち後方側の吊り荷機構400と第1副リフター500saによって撤去部材を支持する(Step440)。   When the removal member is supported by the rear load mechanism 400 and the first dolly DL01, as shown in FIG. 16 (b), the removal member is moved until a part of the removal member is positioned below the first auxiliary lifter 500sa. Move forward. Specifically, the first dolly DL01 mounted with the front end of the removal member moves (advances), and the rear suspension mechanism 400 that grips the removal member is moved forward along the erection girder 210 to remove it. The member is moved forward. When the removal member moves to a predetermined position, a part (front side) of the removal member is gripped by the suspension latch 530 of the first sub-lifter 500sa, and the support of the removal member by the first dolly DL01 is released. Accordingly, the support on the front side of the removal member is transferred from the first dolly DL01 to the first auxiliary lifter 500sa, that is, the removal member is supported by the rear hanging mechanism 400 and the first auxiliary lifter 500sa (Step 440).

後方側の吊り荷機構400と第1副リフター500saによって撤去部材を支持すると、図16(c)に示すように、撤去部材の下方に位置するまで第1ドーリーDL01が移動(後退)する。そして、この第1ドーリーDL01の撤去部材を吊降し、後方側の吊り荷機構400と第1副リフター500saによる撤去部材の把持を解除して(Step450)、図16(d)に示すように撤去部材を工事ヤード100外に搬出する。   When the removal member is supported by the rear hanging load mechanism 400 and the first auxiliary lifter 500sa, the first dolly DL01 moves (retreats) until it is positioned below the removal member, as shown in FIG. Then, the removal member of the first dolly DL01 is suspended, and the holding of the removal member by the rear hanging mechanism 400 and the first auxiliary lifter 500sa is released (Step 450), as shown in FIG. 16 (d). The removal member is carried out of the construction yard 100.

構成部材を撤去すると、新設部材を搭載したドーリーDL(以下、このドーリーを「第2ドーリーDL02」という。)を工事ヤード100内に進入させ、さらに新設部材が第2主リフター500mbと第2副リフター500sbの間に位置するまで第2ドーリーDL02を移動させる。図16(c)に示すように新設部材が所定位置まで運び込まれると、架設桁210に取り付けられた2つの吊り荷機構400のうち前方側の荷機構400によって新設部材の一部(前方側)を把持するとともに、第2副リフター500sbの吊り係止具530によって新設部材の一部(後方側)を把持したうえで、後方側の吊り荷機構400と第2副リフター500sbによって新設部材を吊上げ(Step460)、図16(d)に示すように第2ドーリーDL02を後退させる。   When the structural member is removed, the dolly DL (hereinafter, this dolly is referred to as “second dolly DL02”) on which the new member is mounted enters the construction yard 100, and the new member further includes the second main lifter 500mb and the second secondary lifter. The second dolly DL02 is moved until it is positioned between the lifters 500sb. When the new member is carried to a predetermined position as shown in FIG. 16 (c), a part of the new member (front side) by the load mechanism 400 on the front side of the two suspended load mechanisms 400 attached to the erection girder 210. And a part of the newly installed member (rear side) by the suspension latch 530 of the second sub lifter 500sb, and then the new member is lifted by the rear load mechanism 400 and the second sub lifter 500sb. (Step 460), the second dolly DL02 is moved backward as shown in FIG.

第2ドーリーDL02が新設部材の後端部まで後退すると、この第2ドーリーDL02に新設部材の後方端を吊降ろし、第2副リフター500sbの吊り係止具530による新設部材の把持を解除する。これにより、新設部材の後方端の支持を第2副リフター500sbから第2ドーリーDL02に移行し、すなわち前方側の吊り荷機構400と第2ドーリーDL02によって新設部材を支持する(Step470)。   When the second dolly DL02 is retracted to the rear end of the new member, the rear end of the new member is suspended from the second dolly DL02, and the gripping of the new member by the suspension lock 530 of the second sub-lifter 500sb is released. Thereby, the support of the rear end of the new member is shifted from the second sub-lifter 500sb to the second dolly DL02, that is, the new member is supported by the front hanging mechanism 400 and the second dolly DL02 (Step 470).

前方側の吊り荷機構400と第2ドーリーDL02によって新設部材を支持すると、図17(a)に示すように、新設部材の一部が第2主リフター500mbの下方に位置するまで、新設部材を前方に移動させる。詳しくは、新設部材の後方端を搭載した第2ドーリーDL02が移動(前進)するとともに、新設部材を把持した前方側の吊り荷機構400を架設桁210に沿って前方に横行させることによって、新設部材を前方に移動させるわけである。新設部材が所定位置まで移動すると、架設桁210に取り付けられた2つの吊り荷機構400のうち後方側の荷機構400によって新設部材の一部(後方側)を把持し、第2ドーリーDL02による新設部材の支持を解除する。これにより、新設部材の後方側の支持を第2ドーリーDL02から後方側の荷機構400に移行し、すなわち2つの(前方側と後方側の)吊り荷機構400によって新設部材を支持する(Step480)。   When the new member is supported by the forward load mechanism 400 and the second dolly DL02, as shown in FIG. 17 (a), the new member is moved until a part of the new member is positioned below the second main lifter 500mb. Move forward. Specifically, the second dolly DL02 mounted with the rear end of the newly installed member moves (advances), and the front hanging mechanism 400 that grips the newly installed member is moved forward along the installation girder 210 to newly install the new member. The member is moved forward. When the new member moves to a predetermined position, a part of the new member (rear side) is gripped by the rear load mechanism 400 of the two hanging load mechanisms 400 attached to the erection girder 210, and the new dolly DL02 newly installs. Release the support of the member. Thereby, the support on the rear side of the new member is shifted from the second dolly DL02 to the load mechanism 400 on the rear side, that is, the new member is supported by the two load mechanisms 400 (front side and rear side) (Step 480). .

2つの吊り荷機構400によって新設部材を支持すると、図17(b)に示すように、施工区間110の計画位置まで新設部材を前方に移動させる。詳しくは、新設部材を把持した2つの吊り荷機構400を架設桁210に沿って前方に横行させることによって、新設部材を前方に移動させるわけである。そして、図17(c)に示すように第1主リフター500maと第2主リフター500mbがジャッキダウンし、新設部材を吊降ろして2つの吊り荷機構400による新設部材の把持を解除することで、計画位置に新設部材を設置する(Step480)。なお、新設部材の吊上げや吊降しは、第1主リフター500maと第2主リフター500mbのジャッキダウン及びジャッキアップによるほか、ウィンチやホイストといった吊り荷機構400の動力手段によって行うこともできるし、チェーンブロック(吊り荷機構400)を利用した人力によることも、あるいはこれらを併用して行うこともできる。   When the new member is supported by the two suspended load mechanisms 400, the new member is moved forward to the planned position of the construction section 110 as shown in FIG. Specifically, the two newly installed members are moved forward by traversing the two suspended load mechanisms 400 holding the new member forward along the installation girders 210. Then, as shown in FIG. 17 (c), the first main lifter 500ma and the second main lifter 500mb are jacked down, the new member is suspended, and the holding of the new member by the two suspended load mechanisms 400 is released. A new member is installed at the planned position (Step 480). In addition, the lifting and lifting of the new member can be performed by jacking down and jacking up the first main lifter 500ma and the second main lifter 500mb, or by power means of the lifting mechanism 400 such as a winch or a hoist, It can be performed by human power using a chain block (suspended load mechanism 400) or by using them together.

ここまでの部材撤去工程(Step420)〜新設部材設置工程(Step480)が計画された分だけ繰り返し行われると、後片付けを行って(Step120)作業を完了する。なお、ここでは1台のドーリーDLが撤去部材や新設部材を運送する例で説明しているが、もちろん2以上のドーリーDLによって撤去部材や新設部材を運送することもできる。また、上記の説明では撤去部材を搬出した後に新設部材を搬入して設置する例を示しているが、これに限らずあらかじめ新設部材を搬入したうえで構成部材を撤去〜搬出し、その後に新設部材を設置する手順とすることもできる。   When the member removal step (Step 420) to the new member installation step (Step 480) up to here are repeated for the planned amount, the post-cleaning is performed (Step 120) to complete the operation. Here, an example is described in which one dolly DL carries the removal member or the new member, but of course, the removal member or the new member can also be carried by two or more dolly DLs. In addition, the above explanation shows an example in which the newly installed member is carried in after the removed member is carried out. However, the present invention is not limited to this example. It can also be set as the procedure which installs a member.

続いて多基式長尺架設桁型揚重装置200を用いたケースについて説明する。図18は、多基式長尺架設桁型揚重装置200を用いた場合の本願発明の部材更新方法の主な工程の流れを示すフロー図である。工事を始めるに当たって、既述したとおりはじめに工事ヤード100を設定する(Step110)。工事ヤード100を設定すると、リフター500を搭載した4台の貨物自動車Trを工事ヤード100内に進入させる。このとき貨物自動車Trは、工事ヤード100を設定した車線を通行して、すなわち図1に示す他の車線を通ることなく(例えば横入りすることなく)、後方側(この場合、終点側)から工事ヤード100内に進入させる。   Then, the case using the multi-base long erection girder type lifting device 200 will be described. FIG. 18 is a flowchart showing the flow of the main steps of the member updating method of the present invention when the multi-base long girder-type lifting device 200 is used. In starting construction, the construction yard 100 is set first as described above (Step 110). When the construction yard 100 is set, the four trucks Tr with the lifter 500 are entered into the construction yard 100. At this time, the lorry Tr passes through the lane in which the construction yard 100 is set, that is, from the rear side (in this case, the end point side) without passing through the other lanes shown in FIG. Enter the construction yard 100.

工事ヤード100内に搬入された4基のリフター500は、図19(a)に示すように前方から第1副リフター500sa、第1主リフター500ma、第2主リフター500mb、第2副リフター500sbの順であって、第1主リフター500maと第2主リフター500mbで施工区間110を挟むように設置される(Step510)。   As shown in FIG. 19A, the four lifters 500 carried into the construction yard 100 include a first sub-lifter 500sa, a first main lifter 500ma, a second main lifter 500mb, and a second sub-lifter 500sb from the front. In order, the first main lifter 500ma and the second main lifter 500mb are installed so as to sandwich the construction section 110 (Step 510).

所定位置に4基のリフター500を設置すると、分割部材210aを搭載した貨物自動車Trを第1副リフター500sa〜第2主リフター500mb間に進入させ、分割部材210aを連結して架設桁210を形成する(Step521)とともに、架設桁210に横行可能に1又は2以上の吊り荷機構400を取り付ける(Step522)。もちろん、分割することなく1本の架設桁210を用いることもできるし、あらかじめ架設桁210に吊り荷機構400を取り付けたうえで搬入することもできる。そして図19(b)に示すように、架設桁210の一端(図19では左側)を第1副リフター500saの構台に固定し、架設桁210の中央部を第1主リフター500maの構台に固定し、架設桁210の他端(図19では右側)を第2主リフター500mbの構台に固定する(Step523)。   When the four lifters 500 are installed at predetermined positions, the lorry Tr mounted with the dividing member 210a enters between the first sub-lifter 500sa and the second main lifter 500mb, and the dividing member 210a is connected to form the installation girder 210. At the same time (Step 521), one or more suspended load mechanisms 400 are attached to the erection girder 210 so as to be traversable (Step 522). Of course, one erection girder 210 can be used without being divided, or can be carried in after the suspension load mechanism 400 is attached to the erection girder 210 in advance. Then, as shown in FIG. 19B, one end (the left side in FIG. 19) of the erection beam 210 is fixed to the gantry of the first sub-lifter 500sa, and the central part of the erection beam 210 is fixed to the gantry of the first main lifter 500ma. Then, the other end (right side in FIG. 19) of the installation beam 210 is fixed to the gantry of the second main lifter 500mb (Step 523).

ここまでの準備が整うと、施工区間110で計画され、事前に道路橋から切断された構成部材を道路橋本体から取り外す(Step530)。なお、既に構成部材が撤去され、撤去部材が施工区間110周辺に仮置きされている場合は部材の撤去工程(Step530)を省略することができる。   When the preparation so far is completed, the structural members planned in the construction section 110 and cut in advance from the road bridge are removed from the road bridge body (Step 530). In addition, when a structural member is already removed and the removed member is temporarily placed around the construction section 110, the member removal step (Step 530) can be omitted.

構成部材が撤去されると(あるいは撤去部材が用意されると)、図19(c)に示すように架設桁210に取り付けられた吊り荷機構400によって撤去部材を把持し、所定の高さまで吊上げる。なお、撤去部材の吊上げや吊降しは、第1副リフター500saと第1主リフター500ma、第2主リフター500mbのジャッキダウン及びジャッキアップによるほか、ウィンチやホイストといった吊り荷機構400の動力手段によって行うこともできるし、チェーンブロック(吊り荷機構400)を利用した人力によることも、あるいはこれらを併用して行うこともできる。   When the component member is removed (or when the removal member is prepared), as shown in FIG. 19C, the removal member is held by the hanging load mechanism 400 attached to the erection girder 210 and suspended to a predetermined height. increase. The removal member is lifted and suspended by jacking down and jacking up the first auxiliary lifter 500sa, the first main lifter 500ma, and the second main lifter 500mb, as well as by a power means of the lifting mechanism 400 such as a winch or a hoist. It can also be carried out, by human power using a chain block (suspended load mechanism 400), or in combination thereof.

撤去部材を吊上げると、図19(d)に示すように、撤去部材が第1副リフター500saと第1主リフター500maの間に位置するまで、撤去部材を前方に移動させる。詳しくは、撤去部材を把持した吊り荷機構400を、架設桁210に沿って前方に横行させることによって、撤去部材を前方に移動させるわけである。撤去部材が所定位置まで移動すると、待機していたドーリーDLに撤去部材を吊降ろし、吊り荷機構400による撤去部材の把持を解除して(Step540)、ドーリーDLによって撤去部材を工事ヤード100外に搬出する。   When the removal member is lifted, as shown in FIG. 19D, the removal member is moved forward until the removal member is positioned between the first sub-lifter 500sa and the first main lifter 500ma. Specifically, the removal member is moved forward by traversing the hanging load mechanism 400 holding the removal member forward along the installation girder 210. When the removal member moves to a predetermined position, the removal member is suspended from the waiting dolly DL, and the holding of the removal member by the lifting mechanism 400 is released (Step 540). Take it out.

構成部材を撤去すると、図20(a)に示すように、架設桁210の一端(図20では左側)を第1主リフター500maの構台に固定し、架設桁210の中央部を第2主リフター500mbの構台に固定し、架設桁210の他端(図20では右側)を第2副リフター500sbの構台に固定する(Step550)。このとき、第1副リフター500sa〜第2主リフター500mbに架け渡された架設桁210(Step520)を取り外して(あるいはスライドさせて)流用することもできるし、あるいは第1副リフター500sa〜第2主リフター500mbに架け渡された架設桁210とは別の新たな架設桁210を第1主リフター500ma〜第2副リフター500sbに架け渡すこともできる。   When the structural member is removed, as shown in FIG. 20A, one end (the left side in FIG. 20) of the installation girder 210 is fixed to the gantry of the first main lifter 500ma, and the central portion of the installation girder 210 is fixed to the second main lifter. The other end (right side in FIG. 20) of the installation girder 210 is fixed to the gantry of the second sub-lifter 500sb (Step 550). At this time, the installation girder 210 (Step 520) spanned between the first sub-lifter 500sa to the second main lifter 500mb can be removed (or slid) and used, or the first sub-lifter 500sa to the second sub-lifter 500sa. A new installation girder 210 different from the installation girder 210 extended over the main lifter 500mb can also be extended over the first main lifter 500ma to the second sub-lifter 500sb.

第1主リフター500ma〜第2副リフター500sbに架設桁210を架け渡すと、新設部材を搭載したドーリーDLを工事ヤード100内に進入させ、さらに新設部材が第2主リフター500mbと第2副リフター500sbの間に位置するまでドーリーDLを移動させる。図20(b)に示すように新設部材が所定位置まで運び込まれると、架設桁210に取り付けられた吊り荷機構400によって新設部材を把持して吊上げ、図20(c)に示すように施工区間110の計画位置まで新設部材を前方に移動させる。詳しくは、新設部材を把持した2つの吊り荷機構400を架設桁210に沿って前方に横行させることによって、新設部材を前方に移動させるわけである。そして図20(d)に示すように、新設部材を吊降ろして吊り荷機構400による新設部材の把持を解除することで、計画位置に新設部材を設置する(Step560)。なお、新設部材の吊上げや吊降しは、第1主リフター500maと第2主リフター500mb、第2副リフター500sbのジャッキダウン及びジャッキアップによるほか、ウィンチやホイストといった吊り荷機構400の動力手段によって行うこともできるし、チェーンブロック(吊り荷機構400)を利用した人力によることも、あるいはこれらを併用して行うこともできる。   When the installation girder 210 is bridged between the first main lifter 500ma to the second auxiliary lifter 500sb, the dolly DL loaded with the new member is caused to enter the construction yard 100, and the new member further becomes the second main lifter 500mb and the second auxiliary lifter. The dolly DL is moved until it is located between 500 sb. When the new member is carried to a predetermined position as shown in FIG. 20 (b), the new member is gripped and lifted by the lifting mechanism 400 attached to the erection girder 210, and the construction section is shown in FIG. 20 (c). The new member is moved forward to the planned position of 110. Specifically, the two newly installed members are moved forward by traversing the two suspended load mechanisms 400 holding the new member forward along the installation girders 210. And as shown in FIG.20 (d), a new installation member is installed in a plan position by suspending a new installation member and canceling | releasing the holding of the new installation member by the hanging load mechanism 400 (Step560). Note that the lifting and lifting of the newly installed member is not only by jacking down and jacking up the first main lifter 500ma, the second main lifter 500mb, and the second auxiliary lifter 500sb, but also by power means of the lifting mechanism 400 such as a winch or a hoist. It can also be carried out, by human power using a chain block (suspended load mechanism 400), or in combination thereof.

ここまでの部材撤去工程(Step530)〜新設部材設置工程(Step560)が計画された分だけ繰り返し行われると、後片付けを行って(Step120)作業を完了する。   When the member removal step (Step 530) to the new member installation step (Step 560) so far are repeated for the planned amount, the post-cleaning is performed (Step 120) to complete the operation.

多基式長尺架設桁型揚重装置200は、架設桁210を4基のリフター500(第1主リフター500maと第1副リフター500sa、第2主リフター500mb、第2副リフター500sb)に固定して架け渡した構成とすることもできる。この場合、上記した第1の架設桁設置(Step520)と第2の架設桁設置(Step550)を省略することができる。以下、この場合の手順について説明する。   In the multi-base long girder type lifting device 200, the girder 210 is fixed to four lifters 500 (first main lifter 500ma, first sub lifter 500sa, second main lifter 500mb, and second sub lifter 500sb). It is also possible to adopt a configuration that spans. In this case, the first erection girder installation (Step 520) and the second erection girder installation (Step 550) can be omitted. Hereinafter, the procedure in this case will be described.

工事ヤード100内に搬入された4基のリフター500が、図22(a)に示すように前方から第1副リフター500sa、第1主リフター500ma、第2主リフター500mb、第2副リフター500sbの順であって、第1主リフター500maと第2主リフター500mbで施工区間110を挟むように設置される(Step611)。4基のリフター500を設置すると、分割部材210aを搭載した貨物自動車Trを第1副リフター500sa〜第2副リフター500sb間に進入させ、分割部材210aを連結して架設桁210を形成する(Step612)とともに、架設桁210に横行可能に1又は2以上の吊り荷機構400を取り付ける(Step613)。もちろん、分割することなく1本の架設桁210を用いることもできるし、あらかじめ架設桁210に吊り荷機構400を取り付けたうえで搬入することもできる。そして図22(b)に示すように、架設桁210の一端を第1副リフター500saの構台に固定し、架設桁210の中央部を第1主リフター500maと第2主リフター500mbの構台に固定し、架設桁210の他端を第2副リフター500sbの構台に固定する(Step614)。   As shown in FIG. 22 (a), four lifters 500 carried into the construction yard 100 include a first sub-lifter 500sa, a first main lifter 500ma, a second main lifter 500mb, and a second sub-lifter 500sb from the front. In order, the first main lifter 500ma and the second main lifter 500mb are installed so as to sandwich the construction section 110 (Step 611). When the four lifters 500 are installed, the lorry Tr carrying the dividing member 210a enters between the first sub-lifter 500sa to the second sub-lifter 500sb, and the dividing member 210a is connected to form the erection beam 210 (Step 612). At the same time, one or more suspension load mechanisms 400 are attached to the erection girder 210 so as to traverse (Step 613). Of course, one erection girder 210 can be used without being divided, or can be carried in after the suspension load mechanism 400 is attached to the erection girder 210 in advance. Then, as shown in FIG. 22 (b), one end of the installation girder 210 is fixed to the gantry of the first sub-lifter 500sa, and the central portion of the installation girder 210 is fixed to the gantry of the first main lifter 500ma and the second main lifter 500mb. Then, the other end of the installation girder 210 is fixed to the gantry of the second auxiliary lifter 500sb (Step 614).

ここまでの準備が整うと、施工区間110で計画され、事前に道路橋から切断された構成部材を道路橋本体から取り外す(Step620)。なお、既に構成部材が撤去され、撤去部材が施工区間110周辺に仮置きされている場合は部材の撤去工程を省略することができる。   When the preparation so far is completed, the structural members planned in the construction section 110 and cut in advance from the road bridge are removed from the road bridge body (Step 620). In addition, when a structural member is already removed and the removal member is temporarily placed around the construction section 110, the member removal step can be omitted.

構成部材が撤去されると(あるいは撤去部材が用意されると)、図22(c)に示すように架設桁210に取り付けられた吊り荷機構400によって撤去部材を把持し、所定の高さまで吊上げる。なお、撤去部材の吊上げや吊降しは、第1副リフター500saと第1主リフター500ma、第2主リフター500mb、第2副リフター500sbのジャッキダウン及びジャッキアップによるほか、ウィンチやホイストといった吊り荷機構400の動力手段によって行うこともできるし、チェーンブロック(吊り荷機構400)を利用した人力によることも、あるいはこれらを併用して行うこともできる。   When the component member is removed (or when the removal member is prepared), as shown in FIG. 22C, the removal member is gripped by the hanging load mechanism 400 attached to the installation girder 210 and suspended to a predetermined height. increase. The removal member is lifted and suspended by jacking down and jacking up the first sub-lifter 500sa, the first main lifter 500ma, the second main lifter 500mb, and the second sub-lifter 500sb, as well as hanging loads such as winches and hoists. It can also be performed by the power means of the mechanism 400, by human power using the chain block (suspended load mechanism 400), or in combination.

撤去部材を吊上げると、図22(d)に示すように撤去部材が第1副リフター500saと第1主リフター500maの間に位置するまで、撤去部材を前方に移動させる。詳しくは、撤去部材を把持した吊り荷機構400を、架設桁210に沿って前方に横行させることによって、撤去部材を前方に移動させるわけである。撤去部材が所定位置まで移動すると、待機していたドーリーDLに撤去部材を吊降ろし、吊り荷機構400による撤去部材の把持を解除して(Step630)、図23(a)に示すようにドーリーDLによって撤去部材を工事ヤード100外に搬出する。   When the removal member is lifted, the removal member is moved forward until the removal member is positioned between the first sub-lifter 500sa and the first main lifter 500ma as shown in FIG. Specifically, the removal member is moved forward by traversing the hanging load mechanism 400 holding the removal member forward along the installation girder 210. When the removal member moves to a predetermined position, the removal member is suspended from the waiting dolly DL, and the holding of the removal member by the hanging load mechanism 400 is released (Step 630), as shown in FIG. 23 (a). To remove the removed member out of the construction yard 100.

構成部材を撤去すると、新設部材を搭載したドーリーDLを工事ヤード100内に進入させ、さらに新設部材が第2主リフター500mbと第2副リフター500sbの間に位置するまでドーリーDLを移動させる。図23(b)に示すように新設部材が所定位置まで運び込まれると、架設桁210に取り付けられた吊り荷機構400によって新設部材を把持して吊上げ、図23(c)に示すように施工区間110の計画位置まで新設部材を前方に移動させる。詳しくは、新設部材を把持した2つの吊り荷機構400を架設桁210に沿って前方に横行させることによって、新設部材を前方に移動させるわけである。そして図23(d)に示すように、新設部材を吊降ろして吊り荷機構400による新設部材の把持を解除することで、計画位置に新設部材を設置する(Step640)。なお、新設部材の吊上げや吊降しは、第1副リフター500saと第1主リフター500ma、第2主リフター500mb、第2副リフター500sbのジャッキダウン及びジャッキアップによるほか、ウィンチやホイストといった吊り荷機構400の動力手段によって行うこともできるし、チェーンブロック(吊り荷機構400)を利用した人力によることも、あるいはこれらを併用して行うこともできる。   When the component member is removed, the dolly DL on which the new member is mounted enters the construction yard 100, and the dolly DL is moved until the new member is positioned between the second main lifter 500mb and the second sub lifter 500sb. When the new member is carried to a predetermined position as shown in FIG. 23 (b), the new member is gripped and lifted by the lifting mechanism 400 attached to the erection girder 210, and the construction section is shown in FIG. 23 (c). The new member is moved forward to the planned position of 110. Specifically, the two newly installed members are moved forward by traversing the two suspended load mechanisms 400 holding the new member forward along the installation girders 210. Then, as shown in FIG. 23 (d), the new member is suspended at a planned position by lifting the new member and releasing the grip of the new member by the hanging load mechanism 400 (Step 640). In addition, the lifting and lifting of the new member is performed by jacking down and jacking up the first sub-lifter 500sa, the first main lifter 500ma, the second main lifter 500mb, and the second sub-lifter 500sb, as well as lifting loads such as winches and hoists. It can also be performed by the power means of the mechanism 400, by human power using the chain block (suspended load mechanism 400), or in combination.

ここまでの部材撤去工程(Step620)〜新設部材設置工程(Step640)が計画された分だけ繰り返し行われると、後片付けを行って(Step120)作業を完了する。   When the member removal step (Step 620) to the new member installation step (Step 640) up to here are repeated for the planned amount, clean-up is performed (Step 120) and the operation is completed.

本願発明の揚重装置、及び揚重装置を用いた部材更新方法は、自動車専用道路や一般自動車道など様々な種類の道路橋に利用することができる。本願発明によれば、供用中の道路橋を効率よく更新することができ、ひいては道路橋の長寿命化につながることを考えれば、産業上利用できるばかりでなく社会的にも大きな貢献を期待し得る発明といえる。   The lifting device and the member updating method using the lifting device of the present invention can be used for various types of road bridges such as a motorway and a general motorway. According to the present invention, in view of the fact that a road bridge in service can be efficiently updated and, in turn, will lead to a longer life of the road bridge, it is expected not only to be industrially usable but also to make a great social contribution. It can be said that the invention is obtained.

100 工事ヤード
110 施工区間
200 架設桁型揚重装置
210 (架設桁型揚重装置の)架設桁
210a (架設桁の)分割部材
211 (架設桁の)本体桁
212 (架設桁の)レール桁
300 ウィンチ型揚重装置
300a 第1のウィンチ型揚重装置
300b 第2のウィンチ型揚重装置
400 吊り荷機構
410 (吊り荷機構の)吊りロープ
420 (吊り荷機構の)移動式係止手段
430 (吊り荷機構の)吊り治具
500 リフター
500ma 第1主リフター
500sa 第1副リフター
500mb 第2主リフター
500sb 第2副リフター
510 (リフターの)支柱
520 (リフターの)構台
530 (リフターの)吊り係止具
540 (リフターの)通行空間
550 (リフターの)連結梁
Tr 貨物自動車
DL ドーリー
DESCRIPTION OF SYMBOLS 100 Construction yard 110 Construction section 200 Erection girder type lifting device 210 Erection girder 210 (for erection girder type lifting device) 210a Dividing member 211 (for erection girder) Main body girder 212 (for erection girder) Rail girder 300 Winch type lifting device 300a First winch type lifting device 300b Second winch type lifting device 400 Suspension load mechanism 410 Suspension rope 420 (Suspension load mechanism) Mobile locking means 430 ( Lifting jig 500) Lifter 500ma First main lifter 500sa First sublifter 500mb Second main lifter 500sb Second sublifter 510 (lifter) column 520 (lifter) gantry 530 (lifter) suspension lock Tool 540 (lifter's) traffic space 550 (lifter's) connecting beam Tr Lorry DL Dolly

Claims (20)

道路橋の一部を使用した所定区間が工事ヤードとして設定され、該工事ヤード内に設置された揚重装置を使用して、該工事ヤード内の施工区間で道路橋の構成部材を更新する方法であって、
前記揚重装置は、リフターと、架設桁と、吊り荷機構と、を含んで構成され、
前記リフターは、荷重を支持しかつ上下に伸縮可能な4本の支柱と、4本の該支柱上部に連結される構台と、を含んで構成されるとともに、貨物自動車が通過可能な通行空間を有し、
前記架設桁は、2以上の前記リフターの前記構台に固定されて、該リフター間に架け渡され、
前記吊り荷機構は、吊りロープと、該吊りロープの先端に固定された吊り治具と、動力手段と、を有するとともに、前記架設桁に沿って横行可能に該架設桁に取り付けられ、
さらに前記揚重装置は、前記施工区間の上方に前記架設桁が配置されるよう設置され、
前記揚重装置を構築する揚重装置構築工程と、
前記施工区間における道路橋の構成部材を取り外す撤去工程と、
前記撤去工程で取り外した撤去部材を前記揚重装置で吊上げるとともに、該撤去部材を把持した前記吊り荷機構が前記架設桁に沿って横行し、該揚重装置で該撤去部材を貨物自動車に吊降ろす撤去部材積載工程と、を備え、
前記揚重装置構築工程は、
1基の前記リフターを搭載した貨物自動車が、該リフターを前記施工区間周辺の所定位置まで搬入するとともに、該施工区間を挟むように2基の該リフターを設置するリフター設置工程と、
前記吊り荷機構を取り付けた前記架設桁を、又は前記吊り荷機構とは別体の前記架設桁を、搬入する工程と、
前記架設桁の両端を、前記施工区間を挟んで配置されたそれぞれの前記リフターの構台に固定する工程と、
2基の前記リフターの前記支柱を伸ばしてジャッキアップする工程と、を有する、
ことを特徴とする揚重装置を用いた部材更新方法。
A method in which a predetermined section using a part of a road bridge is set as a construction yard, and the components of the road bridge are updated in the construction section in the construction yard using a lifting device installed in the construction yard Because
The lifting device includes a lifter, a erection girder, and a hanging load mechanism,
The lifter includes four struts that support a load and can be vertically expanded and contracted, and a gantry coupled to the top of the four struts, and has a traffic space through which a truck can pass. Have
The erection girder is fixed to the gantry of the two or more lifters, and spans between the lifters,
The suspension load mechanism has a suspension rope, a suspension jig fixed to the tip of the suspension rope, and a power means, and is attached to the installation girder so as to traverse along the installation girder,
Furthermore, the lifting device is installed so that the installation girder is arranged above the construction section,
A lifting device construction step of constructing the lifting device;
A removal step of removing the components of the road bridge in the construction section;
The removal member removed in the removal step is lifted by the lifting device, and the hanging load mechanism that grips the removal member is traversed along the installation girder, and the removal member is moved to the lorry by the lifting device. A removal member loading process for hanging,
The lifting device construction process includes:
A lifter installation step in which a truck equipped with one lifter carries the lifter to a predetermined position around the construction section and installs the two lifters so as to sandwich the construction section;
A step of carrying in the installation girder to which the suspension load mechanism is attached, or the installation girder separate from the suspension load mechanism;
Fixing both ends of the erection girder to the gantry of each of the lifters arranged across the construction section;
Extending the struts of the two lifters and jacking up.
The member update method using the lifting apparatus characterized by the above-mentioned.
前記工事ヤードは、前記施工区間が該工事ヤードの後方側に位置するように設定され、The construction yard is set so that the construction section is located on the rear side of the construction yard,
前記リフター設置工程では、前記リフターを搭載した貨物自動車が、前記工事ヤードを設定した車線とは異なる車線から横入りすることなく、該工事ヤードの後方から進入し、In the lifter installation step, the truck mounted with the lifter enters from the rear of the construction yard without entering from a lane different from the lane in which the construction yard is set,
前記撤去部材積載工程では、前記施工区間の前方まで後退してきた貨物自動車に、前記撤去部材を吊降ろし、In the removal member loading step, the removal member is hung on a truck that has retreated to the front of the construction section.
前記リフター設置工程における貨物自動車、及び前記撤去部材積載工程における貨物自動車は、前方向きの状態で前記工事ヤード内を移動する、The freight vehicle in the lifter installation step and the freight vehicle in the removal member loading step move in the construction yard in a front-facing state.
ことを特徴とする請求項1記載の揚重装置を用いた部材更新方法。The member renewal method using the lifting apparatus of Claim 1 characterized by the above-mentioned.
前記撤去部材積載工程では、前記吊り荷機構を用いて、前記撤去部材を吊上げるとともに、前記撤去部材を吊降ろす、
ことを特徴とする請求項1又は請求項2記載の揚重装置を用いた部材更新方法。
In the removal member loading step, using the hanging load mechanism, the removal member is lifted and the removal member is suspended.
The member renewal method using the lifting apparatus of Claim 1 or Claim 2 characterized by the above-mentioned.
前記撤去部材積載工程では、リフターの上下伸縮によって、前記撤去部材を吊上げるとともに、前記撤去部材を吊降ろす、
ことを特徴とする請求項1乃至請求項3のいずれかに記載の揚重装置を用いた部材更新方法。
In the removal member loading step, by lifting and lowering the lifter, the removal member is lifted and the removal member is suspended.
A member updating method using the lifting device according to any one of claims 1 to 3.
前記施工区間の前方まで後退してきた貨物自動車に搭載された新設部材を前記揚重装置で吊上げるとともに、該新設部材を把持した前記吊り荷機構が前記架設桁に沿って横行し、該揚重装置で該新設部材を前記施工区間の計画位置に吊降ろして設置する新設工程を、
さらに備え、
前記新設工程における貨物自動車は、前方向きの状態で前記工事ヤード内を移動する、
ことを特徴とする請求項1乃至請求項4のいずれかに記載の揚重装置を用いた部材更新方法。
The newly installed member mounted on the lorry that has retreated to the front of the construction section is lifted by the lifting device, and the suspended load mechanism that grips the newly installed member traverses along the installation girder, A new installation process in which the new member is suspended and installed at the planned position of the construction section with a heavy device,
In addition,
The lorry in the new process moves in the construction yard in a front-facing state.
A member renewal method using the lifting apparatus according to any one of claims 1 to 4.
前記新設工程では、前記吊り荷機構を用いて、前記新設部材を吊上げるとともに、前記新設部材を吊降ろす、
ことを特徴とする請求項5記載の揚重装置を用いた部材更新方法。
In the new installation step, the new load member mechanism is used to lift the new member and to suspend the new member.
The member renewal method using the lifting apparatus of Claim 5 characterized by the above-mentioned.
前記新設工程では、リフターの上下伸縮によって、前記新設部材を吊上げるとともに、前記新設部材を吊降ろす、
ことを特徴とする請求項5又は請求項6記載の揚重装置を用いた部材更新方法。
In the new installation step, by lifting and lowering the lifter, the new member is suspended and the new member is suspended.
The member renewal method using the lifting apparatus of Claim 5 or Claim 6 characterized by the above-mentioned.
道路橋の一部を使用した所定区間が工事ヤードとして設定され、該工事ヤード内に設置された第1の揚重装置及び第2の揚重装置を使用して、該工事ヤード内の施工区間で道路橋の構成部材を更新する方法であって、
前記第1の揚重装置及び前記第2の揚重装置は、リフターと吊り荷機構を含んで構成され、
前記リフターは、荷重を支持しかつ上下に伸縮可能な4本の支柱を含んで構成されるとともに、貨物自動車が通過可能な通行空間を有し、
前記吊り荷機構は、吊りロープと、該吊りロープの先端に固定された吊り治具と、動力手段を有し、
前記施工区間における道路橋の構成部材を取り外す撤去工程と、
前記撤去工程で取り外した撤去部材を貨物自動車に吊降ろす撤去部材積載工程と、
を備え、
前記撤去部材積載工程は、
前記第1の揚重装置及び前記第2の揚重装置の前記動力手段によってそれぞれの前記吊りロープを巻上げることで、前記吊り治具に把持された前記撤去部材を吊上げる撤去部材両吊り工程と、
前記第1の揚重装置の前記動力手段によって前記撤去部材を吊上げた状態で、前記第2の揚重装置の前記動力手段が前記吊りロープを巻下げることによって、前記撤去部材を前記第1の揚重装置の下方まで移動させる撤去部材移動工程と、
前記第1の揚重装置で、前記撤去部材を貨物自動車に吊降ろす撤去部材片降ろし工程と、を有する、
ことを特徴とする揚重装置を用いた部材更新方法。
A predetermined section using a part of the road bridge is set as a construction yard, and the construction section in the construction yard is used by using the first lifting device and the second lifting device installed in the construction yard. The method of updating the components of the road bridge with
The first lifting device and the second lifting device include a lifter and a suspended load mechanism,
The lifter includes four support columns that support a load and can be expanded and contracted vertically, and has a passage space through which a lorry can pass,
The hanging load mechanism has a hanging rope, a hanging jig fixed to the tip of the hanging rope, and power means,
A removal step of removing the components of the road bridge in the construction section;
A removal member loading step of hanging the removal member removed in the removal step on a truck,
With
The removal member loading step includes
Both removal member suspension steps of lifting the removal member held by the suspension jig by winding the suspension ropes by the power means of the first lifting device and the second lifting device. When,
In the state where the removal member is lifted by the power means of the first lifting device, the power means of the second lifting device lowers the suspension rope, thereby removing the removal member from the first lifting device. A removal member moving step for moving to the lower part of the lifting device;
A removal member piece unloading step of hanging the removal member on a truck with the first lifting device,
The member update method using the lifting apparatus characterized by the above-mentioned.
貨物自動車に搭載された新設部材を前記施工区間の計画位置に吊降ろして設置する新設工程を、さらに備え、
前記新設工程は、
前記第1の揚重装置及び前記第2の揚重装置の前記動力手段によってそれぞれの前記吊りロープを巻上げることで、前記吊り治具に把持された前記新設部材を貨物自動車から吊上げるとともに、貨物自動車が前記施工区間外に移動する新設部材両吊り工程と、
前記第1の揚重装置の前記動力手段によって前記新設部材を吊上げた状態で、前記第2の揚重装置の前記動力手段が前記吊りロープを巻下げることによって該新設部材を該第1の揚重装置の下方まで移動させる新設部材移動工程と、
前記第1の揚重装置で、前記新設部材を前記施工区間の計画位置に吊降ろす新設部材片降ろし工程と、を有する、
ことを特徴とする請求項8記載の揚重装置を用いた部材更新方法。
A new installation step of hanging and installing a new member mounted on the truck at the planned position of the construction section,
The new installation process
While lifting the suspension rope by the power means of the first lifting device and the second lifting device, the new member gripped by the suspension jig is lifted from the truck, A new member both-hanging process in which the lorry moves outside the construction section;
In a state where the new member is lifted by the power means of the first lifting device, the power member of the second lifting device lowers the suspension rope to lower the new member. A new member moving process for moving to the lower part of the heavy equipment;
In the first lifting device, a new member piece lowering step of hanging the new member to the planned position of the construction section,
The member renewal method using the lifting apparatus of Claim 8 characterized by the above-mentioned.
道路橋の一部を使用した所定区間が工事ヤードとして設定され、該工事ヤード内に設置された揚重装置を使用して、該工事ヤード内の施工区間で道路橋の構成部材を更新する方法であって、
前記揚重装置は、4以上のリフターと、架設桁と、2以上の吊り荷機構と、を含んで構成され、
前記リフターは、荷重を支持しかつ上下に伸縮可能な4本の支柱と、4本の該支柱上部に連結される構台と、を含んで構成されるとともに、貨物自動車が通過可能な通行空間を有し、
さらに4以上の前記リフターのうち第1副リフター及び第2副リフターが前記施工区間を挟んで配置され、第1主リフターが該第1副リフターと該施工区間の間に配置されるとともに、第2主リフターが該第2副リフターと該施工区間の間に配置され、
前記架設桁は、前記第1主リフター及び前記第2主リフターの前記構台に固定されて該リフター間に架け渡され、
前記吊り荷機構は、吊りロープと、該吊りロープの先端に固定された吊り治具と、動力手段と、を有するとともに、前記架設桁に沿って横行可能に該架設桁に取り付けられ、
前記施工区間における道路橋の構成部材を取り外す撤去工程と、
前記撤去工程で撤去した撤去部材を前記揚重装置で吊上げるとともに、前記架設桁に沿って該撤去部材を把持した前記吊り荷機構が横行し、該撤去部材の一端を貨物自動車に吊降ろすことで、該吊り荷機構と該貨物自動車によって該撤去部材を支持する第1盛替え工程と、
前記撤去部材の一端を支持する前記貨物自動車が移動するとともに、前記架設桁に沿って該撤去部材を把持した前記吊り荷機構が横行することによって、該撤去部材の一部が前記第1副リフターの下方に位置するまで該撤去部材を運送し、該撤去部材の一端の支持を該貨物自動車から該第1副リフターに移行する第2盛替え工程と、
前記吊り荷機構と前記第1副リフターによって支持された前記撤去部材を、該撤去部材の下方まで移動した貨物自動車に吊降ろす撤去部材積載工程と、
を備えたことを特徴とする揚重装置を用いた部材更新方法。
A method in which a predetermined section using a part of a road bridge is set as a construction yard, and the components of the road bridge are updated in the construction section in the construction yard using a lifting device installed in the construction yard Because
The lifting device includes four or more lifters, a construction girder, and two or more suspension mechanisms,
The lifter includes four struts that support a load and can be vertically expanded and contracted, and a gantry coupled to the top of the four struts, and has a traffic space through which a truck can pass. Have
Further, among the four or more lifters, the first sub-lifter and the second sub-lifter are arranged across the construction section, the first main lifter is arranged between the first sub-lifter and the construction section, Two main lifters are arranged between the second sub-lifter and the construction section;
The erection girder is fixed to the gantry of the first main lifter and the second main lifter and spanned between the lifters,
The suspension load mechanism has a suspension rope, a suspension jig fixed to the tip of the suspension rope, and a power means, and is attached to the installation girder so as to traverse along the installation girder,
A removal step of removing the components of the road bridge in the construction section;
The removal member removed in the removal step is lifted by the lifting device, and the suspension mechanism that grips the removal member is traversed along the installation girder, and one end of the removal member is suspended from the lorry. And a first refilling step of supporting the removal member by the suspended load mechanism and the cargo vehicle,
The cargo vehicle supporting one end of the removal member moves, and the suspension mechanism that grips the removal member moves along the installation girder so that a part of the removal member becomes the first sub-lifter. A second refilling step of transporting the removal member until it is located below and transferring support of one end of the removal member from the truck to the first sub-lifter;
A removal member loading step of hanging the removal member supported by the suspension mechanism and the first sub-lifter on a lorry moved to a position below the removal member;
A member updating method using a lifting device.
前記第1盛替え工程では、前記吊り荷機構を用いて、前記撤去部材を吊上げるとともに、前記撤去部材を吊降ろす、
ことを特徴とする請求項10記載の揚重装置を用いた部材更新方法。
In the first refilling step, using the hanging load mechanism, the removal member is lifted and the removal member is suspended,
The member renewal method using the lifting apparatus of Claim 10 characterized by the above-mentioned.
前記撤去部材積載工程では、リフターの上下伸縮によって、前記撤去部材を吊上げるとともに、前記撤去部材を吊降ろす、
ことを特徴とする請求項10又は請求項11記載の揚重装置を用いた部材更新方法。
In the removal member loading step, by lifting and lowering the lifter, the removal member is lifted and the removal member is suspended.
The member renewal method using the lifting apparatus of Claim 10 or Claim 11 characterized by the above-mentioned.
前記第2主リフターと前記第2副リフターの下方まで運送された新設部材を、前記吊り荷機構と該第2副リフターによって貨物自動車から吊り上げる新設部材吊上げ工程と、
前記新設部材の一端を貨物自動車に吊降ろすことで該新設部材の一端の支持を前記第2副リフターから該貨物自動車に移行し、前記吊り荷機構と該貨物自動車によって該新設部材を支持する第3盛替え工程と、
前記新設部材の一端を支持する前記貨物自動車が移動するとともに、前記架設桁に沿って該新設部材を把持した前記吊り荷機構が横行することによって、該新設部材の一部が前記架設桁の下方に位置するまで該新設部材を運送し、該新設部材の一端の支持を該貨物自動車から前記吊り荷機構に移行する第4盛替え工程と、
前記架設桁に沿って前記新設部材を把持した前記吊り荷機構が横行し、前記揚重装置で該新設部材を前記施工区間の計画位置に吊降ろして設置する新設工程を、
さらに備えたことを特徴とする請求項10乃至請求項12のいずれかに記載の揚重装置を用いた部材更新方法。
A new member lifting step of lifting a new member transported to the lower side of the second main lifter and the second sub lifter from the lorry by the suspension mechanism and the second sub lifter;
By suspending one end of the new member on the cargo vehicle, the support of the one end of the new member is transferred from the second sub-lifter to the cargo vehicle, and the new member is supported by the suspension mechanism and the cargo vehicle. 3 refilling steps;
As the lorry supporting one end of the new member moves and the hanging load mechanism that grips the new member traverses along the erection girder, a part of the new member becomes below the erection girder. A fourth refilling step of transporting the new member until it is located at a position, and transferring support of one end of the new member from the truck to the suspension mechanism;
A new installation step in which the hanging load mechanism that grips the new member along the installation girder is traversed, and the new member is suspended and installed at the planned position of the construction section by the lifting device,
The member update method using the lifting apparatus according to any one of claims 10 to 12, further comprising:
道路橋の一部を使用した所定区間が工事ヤードとして設定され、該工事ヤード内に設置された揚重装置を使用して、該工事ヤード内の施工区間で道路橋の構成部材を更新する方法であって、
前記揚重装置は、4以上のリフターと、架設桁と、吊り荷機構と、を含んで構成され、
前記リフターは、荷重を支持しかつ上下に伸縮可能な4本の支柱と、4本の該支柱上部に連結される構台と、を含んで構成されるとともに、貨物自動車が通過可能な通行空間を有し、
さらに4以上の前記リフターのうち第1副リフター及び第2副リフターが前記施工区間を挟んで配置され、第1主リフターが該第1副リフターと該施工区間の間に配置されるとともに、第2主リフターが該第2副リフターと該施工区間の間に配置され、
前記架設桁は、前記第1主リフター及び前記第2主リフターを含む3以上の前記リフターの前記構台に固定されて該リフター間に架け渡され、
前記吊り荷機構は、吊りロープと、該吊りロープの先端に固定された吊り治具と、動力手段と、を有するとともに、前記架設桁に沿って横行可能に該架設桁に取り付けられ、
前記施工区間における道路橋の構成部材を取り外す撤去工程と、
前記第1主リフター、前記第2主リフター及び前記第1副リフターに前記架設桁を架け渡す第1架設桁設置工程と、
前記撤去工程で撤去した撤去部材を前記揚重装置で吊上げるとともに、前記第1主リフター、前記第2主リフター及び前記第1副リフターに架け渡された前記架設桁に沿って該撤去部材を把持した前記吊り荷機構が横行し、該揚重装置で該撤去部材を貨物自動車に吊降ろす撤去部材積載工程と、
を備えたことを特徴とする揚重装置を用いた部材更新方法。
A method in which a predetermined section using a part of a road bridge is set as a construction yard, and the components of the road bridge are updated in the construction section in the construction yard using a lifting device installed in the construction yard Because
The lifting device includes four or more lifters, a construction girder, and a hanging load mechanism.
The lifter includes four struts that support a load and can be vertically expanded and contracted, and a gantry coupled to the top of the four struts, and has a traffic space through which a truck can pass. Have
Further, among the four or more lifters, the first sub-lifter and the second sub-lifter are arranged across the construction section, the first main lifter is arranged between the first sub-lifter and the construction section, Two main lifters are arranged between the second sub-lifter and the construction section;
The erection girder is fixed to the gantry of the three or more lifters including the first main lifter and the second main lifter, and is spanned between the lifters.
The suspension load mechanism has a suspension rope, a suspension jig fixed to the tip of the suspension rope, and a power means, and is attached to the installation girder so as to traverse along the installation girder,
A removal step of removing the components of the road bridge in the construction section;
A first installation girder installation step of bridging the installation girder to the first main lifter, the second main lifter and the first sub-lifter;
The removal member removed in the removal step is lifted by the lifting device, and the removal member is moved along the installation beam spanned over the first main lifter, the second main lifter, and the first sub lifter. The removal member loading process in which the suspended load mechanism that has been gripped is traversed, and the removal member is suspended from the lorry by the lifting device;
A member updating method using a lifting device.
前記第1主リフター、前記第2主リフター及び前記第2副リフターに前記架設桁を架け渡す第2架設桁設置工程と、
貨物自動車に搭載された新設部材を前記揚重装置で吊上げるとともに、前記第1主リフター、前記第2主リフター及び前記第2副リフターに架け渡された前記架設桁に沿って該新設部材を把持した前記吊り荷機構が横行し、該揚重装置で該新設部材を前記施工区間の計画位置に吊降ろして設置する新設工程を、
さらに備えたことを特徴とする請求項14に記載の揚重装置を用いた部材更新方法。
A second installation girder installation step of bridging the installation girder to the first main lifter, the second main lifter and the second sub-lifter;
A new member mounted on the lorry is lifted by the lifting device, and the new member is moved along the construction beam spanned by the first main lifter, the second main lifter, and the second sub lifter. A new installation step in which the suspended load mechanism that has been gripped is traversed, and the new member is suspended and installed at the planned position of the construction section by the lifting device,
The member update method using the lifting apparatus according to claim 14, further comprising:
道路橋の一部を使用した所定区間が工事ヤードとして設定され、該工事ヤード内に設置された揚重装置を使用して、該工事ヤード内の施工区間で道路橋の構成部材を更新する方法であって、
前記揚重装置は、4以上のリフターと、架設桁と、吊り荷機構と、を含んで構成され、
前記リフターは、荷重を支持しかつ上下に伸縮可能な4本の支柱と、4本の該支柱上部に連結される構台と、を含んで構成されるとともに、貨物自動車が通過可能な通行空間を有し、
さらに4以上の前記リフターのうち第1副リフター及び第2副リフターが前記施工区間を挟んで配置され、第1主リフターが該第1副リフターと該施工区間の間に配置されるとともに、第2主リフターが該第2副リフターと該施工区間の間に配置され、
前記架設桁は、前記第1副リフター、前記第1主リフター、前記第2主リフター及び前記第2副リフターの前記構台に固定されて該リフター間に架け渡され、
前記吊り荷機構は、吊りロープと、該吊りロープの先端に固定された吊り治具と、動力手段と、を有するとともに、前記架設桁に沿って横行可能に該架設桁に取り付けられ、
前記施工区間における道路橋の構成部材を取り外す撤去工程と、
前記撤去工程で撤去した撤去部材を前記揚重装置で吊上げるとともに、前記架設桁に沿って該撤去部材を把持した前記吊り荷機構が横行し、該揚重装置で該撤去部材を貨物自動車に吊降ろす撤去部材積載工程と、
を備えたことを特徴とする揚重装置を用いた部材更新方法。
A method in which a predetermined section using a part of a road bridge is set as a construction yard, and the components of the road bridge are updated in the construction section in the construction yard using a lifting device installed in the construction yard Because
The lifting device includes four or more lifters, a construction girder, and a hanging load mechanism.
The lifter includes four struts that support a load and can be vertically expanded and contracted, and a gantry coupled to the top of the four struts, and has a traffic space through which a truck can pass. Have
Further, among the four or more lifters, the first sub-lifter and the second sub-lifter are arranged across the construction section, the first main lifter is arranged between the first sub-lifter and the construction section, Two main lifters are arranged between the second sub-lifter and the construction section;
The erection girder is fixed to the gantry of the first sub-lifter, the first main lifter, the second main lifter and the second sub-lifter and bridged between the lifters,
The suspension load mechanism has a suspension rope, a suspension jig fixed to the tip of the suspension rope, and a power means, and is attached to the installation girder so as to traverse along the installation girder,
A removal step of removing the components of the road bridge in the construction section;
The removal member removed in the removal step is lifted by the lifting device, and the hanging load mechanism that grips the removal member is traversed along the erection girder, and the lifting member is moved to the lorry by the lifting device. A removal member loading process for hanging,
A member updating method using a lifting device.
貨物自動車に搭載された新設部材を前記揚重装置で吊上げるとともに、前記架設桁に沿って該新設部材を把持した前記吊り荷機構が横行し、該揚重装置で該新設部材を前記施工区間の計画位置に吊降ろして設置する新設工程を、
さらに備えたことを特徴とする請求項16に記載の揚重装置を用いた部材更新方法。
The newly installed member mounted on the lorry is lifted by the lifting device, and the suspended load mechanism that grips the newly installed member along the erection girder is traversed, and the lifting member lifts the new member to the construction section. New installation process to hang and install at the planned position of
The member renewal method using the lifting apparatus according to claim 16, further comprising:
前記撤去部材積載工程では、前記吊り荷機構を用いて、前記撤去部材を吊上げるとともに、前記撤去部材を吊降ろす、
ことを特徴とする請求項14乃至請求項17のいずれかに記載の揚重装置を用いた部材更新方法。
In the removal member loading step, using the hanging load mechanism, the removal member is lifted and the removal member is suspended.
A member updating method using the lifting apparatus according to any one of claims 14 to 17.
前記撤去部材積載工程では、リフターの上下伸縮によって、前記撤去部材を吊上げるとともに、前記撤去部材を吊降ろす、
ことを特徴とする請求項14乃至請求項18のいずれかに記載の揚重装置を用いた部材更新方法。
In the removal member loading step, by lifting and lowering the lifter, the removal member is lifted and the removal member is suspended.
A member renewal method using the lifting apparatus according to any one of claims 14 to 18.
前記リフターは、2本の連結梁を有し、4本の前記支柱のうち2本ずつが1本の該連結梁で連結され、4本の該支柱は上下に伸縮可能であるとともに、2本の該連結梁は左右に伸縮可能であり、
前記リフターが貨物自動車に搭載されて該工事ヤード内に搬入されるとともに、所定位置で停止した該貨物自動車の荷台上で、2本の前記連結梁が荷台の外側に伸び、さらに4本の前記支柱が下方に伸びることで4本の該支柱の下端が路面に接地し、前記リフターが路面上で自立すると貨物自動車が移動するリフター設置工程を、
さらに備えたことを特徴とする請求項1乃至請求項19のいずれかに記載の揚重装置を用いた部材更新方法。
The lifter has two connecting beams, two of the four support columns are connected by one connecting beam, and the four support columns can be vertically expanded and The connecting beam is extendable to the left and right,
The lifter is mounted on a truck and is carried into the construction yard, and on the platform of the truck that has stopped at a predetermined position, the two connecting beams extend to the outside of the platform, and further, A lifter installation process in which the lower end of the four pillars touches the road surface by extending the pillar downward, and the lorry moves when the lifter is self-supporting on the road surface,
The member update method using the lifting apparatus according to any one of claims 1 to 19, further comprising:
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