JP7499672B2 - Deck replacement method - Google Patents
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Description
本発明は、複数車線の橋梁（道路橋）における床版架け替え方法、及び、床版架け替え工事用の防護柵に関する。 The present invention relates to a method for replacing decks on multi-lane bridges (road bridges) and a protective fence for deck replacement work.
橋梁においては、橋桁（主桁）上にプレキャストコンクリート製の床版が並べられて路面の基礎をなしている。
かかる床版については、長年の使用による内部の鉄筋の腐食などの理由で、架け替え（既存床版の撤去と新設床版の架設）が求められる場合がある。
In bridges, precast concrete decks are laid on top of the girders (main girders) to form the foundation of the road surface.
Such decks may need to be replaced (removal of the existing deck and construction of a new one) due to reasons such as corrosion of the internal reinforcing bars after years of use.
道路橋の床版更新工事にあたっては、工事に伴うソーシャルロスを低減するため、交通規制の期間や範囲を最小限にすることが求められる。 When carrying out work to renew the deck of a road bridge, it is necessary to minimize the duration and scope of traffic restrictions in order to reduce social losses associated with the work.
一般に、道路橋は、互いに独立した並列な２つの橋梁からなり、各橋梁に片側２車線が設けられている。従って、床版架け替え工事は、１車線ずつ行い、車線Ａの床版架け替え工事中、車線Ｂは供用可能（一般車両の通行可能）とする。従って、２車線を全断面とすると、１車線ずつ行うので、「半断面施工」ともいう。 Generally, a road bridge consists of two parallel bridges that are independent of each other, with two lanes on each side. Therefore, deck replacement work is carried out one lane at a time, and while deck replacement work is being carried out on lane A, lane B remains in service (allowing general vehicles to pass). Therefore, if two lanes are considered to be the full cross section, work is carried out one lane at a time, which is also called "half-section construction."
特許文献１は、床版架け替え工事での上記のような「半断面施工」について開示している。
特許文献１はまた、車線Ａにおいて床版架け替え工事を行っている期間において、車線Ｂの供用を安全に行うため、車線Ａと車線Ｂとの境界に仮設防護柵を設置することを開示している。
Patent Document 1 discloses the above-mentioned "half-section construction" in deck replacement work.
Patent Document 1 also discloses that a temporary protective fence is installed at the boundary between lanes A and B in order to safely operate lane B during the period when deck replacement work is being carried out on lane A.
しかしながら、特許文献１は、工事中の車線Ａと供用中の車線Ｂとの境界に仮設防護柵を設置することを開示するのみで、床版架け替え工事に適した防護柵の詳細については開示していない。 However, Patent Document 1 only discloses the installation of a temporary protective fence at the boundary between lane A under construction and lane B in service, but does not disclose details of a protective fence suitable for deck replacement work.
床版架け替え工事中は、既存床版の撤去により、新設床版が設置されるまでの間、路面が無くなって、穴があいた状態となることから、隣接する供用中の車線を走行している車両が境界線を越えて進入したときには、穴から落下することになって、大事故を招く。従って、このエリアへの進入を特に厳しく防護する必要がある。 During deck replacement work, the existing deck will be removed and a hole will be created until the new deck is installed. If a vehicle traveling on the adjacent lane that is in use crosses the boundary line and enters, it could fall through the hole, causing a serious accident. Therefore, it is necessary to strictly protect entry into this area.
また、このエリアは床版架け替え工事の進行に伴って移動することから、移動しつつ防護することも重要となる。 In addition, this area will move as the deck replacement work progresses, so it is important to protect it while moving.
本発明は、このような実状に鑑み、床版架け替え工事に適した防護柵を用いて行う床版架け替え方法、及び、床版架け替え工事用の防護柵を提供することを課題とする。 In view of the above situation, the present invention aims to provide a method for replacing deck slabs using a protective fence suitable for such work, and a protective fence for such work.
本発明に係る床版架け替え方法の第１～第３の態様は、複数の車線を有する橋梁において、少なくとも１つの車線の床版の列に対し、一の進行方向に順次、床版の架け替えを行う方法であって、
床版撤去機により前記一の進行方向に順次、既存床版を撤去する既存床版撤去工程と、前記床版撤去機よりも前記一の進行方向後方に位置する床版架設機により前記一の進行方向に順次、新設床版を架設する新設床版架設工程と、を含み、
前記床版撤去機と前記床版架設機との間の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置する、床版架け替え方法において、
前記防護柵は、
前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な前側台車と、
前記前側台車よりも前記一の進行方向後方に位置し、かつ、前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な後側台車と、
前記前側台車と前記後側台車とに架け渡されて、前記前側台車及び前記後側台車に支持されるフェンス部材と、
を含み、
前記フェンス部材は、前記床版撤去機と前記床版架設機との間であって床版の架け替えにより開口となり得るエリアへの進入防護となる部材である。
The first to third aspects of the deck replacement method according to the present invention are a method for replacing decks in a row of decks for at least one lane in a bridge having multiple lanes, in one direction of travel,
The method includes an existing deck removal process in which an existing deck is removed in the one traveling direction by a deck removal machine, and a new deck installation process in which a new deck is installed in the one traveling direction by a deck installation machine located behind the deck removal machine in the one traveling direction,
A method for replacing a deck, comprising: disposing a movable guard fence along a boundary between the deck removal machine and the deck erection machine and another adjacent lane in service;
The protective fence is:
A front bogie that can move along the boundary on the deck of the adjacent other lane in service;
A rear bogie located behind the front bogie in the one traveling direction and capable of moving along the boundary on the deck of the other adjacent lane in service;
a fence member that is bridged across the front bogie and the rear bogie and supported by the front bogie and the rear bogie;
Including,
The fence member is a member that prevents entry into an area between the deck slab removal machine and the deck slab erection machine that may become an opening due to the replacement of the deck.
第１の態様では、前記床版撤去機は、移動用の車輪を接地部に有して、撤去前の既存床版上を前記一の進行方向に移動可能であり、前記前側台車は、前記床版撤去機の移動に連動して移動する。 In a first aspect, the deck removal machine has wheels for movement on the contact portion and is capable of moving in the one traveling direction on the existing deck before removal, and the front bogie moves in conjunction with the movement of the deck removal machine.
第２の態様では、前記床版架設機は、移動用の車輪を接地部に有して、架設後の新設床版上を前記一の進行方向に移動可能であり、前記後側台車は、前記床版架設機の移動に連動して移動する。 In a second aspect, the deck erection machine has wheels for movement on the contact portion and is capable of moving in the one direction of travel on the newly constructed deck after erection, and the rear bogie moves in conjunction with the movement of the deck erection machine.
第３の態様では、前記床版撤去機は、移動用の車輪を接地部に有して、撤去前の既存床版上を前記一の進行方向に移動可能であり、前記床版架設機は、移動用の車輪を接地部に有して、架設後の新設床版上を前記一の進行方向に移動可能であり、前記前側台車及び前記後側台車は、前記床版撤去機及び前記床版架設機の移動に連動して移動する。In a third aspect, the deck slab removal machine has wheels for movement on the ground contact portion and is capable of moving in the one traveling direction on the existing deck slab before removal, and the deck slab erection machine has wheels for movement on the ground contact portion and is capable of moving in the one traveling direction on the new deck slab after erection, and the front bogie and the rear bogie move in conjunction with the movement of the deck slab removal machine and the deck erection machine.
本発明に係る床版架け替え方法によれば、床版撤去機後方のエリア、床版架設機前方のエリア、又は、床版撤去機と床版架設機との間のエリアと、これに隣接する供用中の他の車線との境界に、防護柵を配置し、床版架け替え工事の進行に合わせて移動可能としたため、他の車線の供用を安全に行いながら、床版架け替え工事を進めることができる。 According to the deck replacement method of the present invention, protective fences are placed at the boundaries between the area behind the deck removal machine, the area in front of the deck erection machine, or the area between the deck removal machine and the deck erection machine, and other adjacent lanes in use, and can be moved as the deck replacement work progresses. This allows the deck replacement work to proceed while safely keeping other lanes in use.
本発明に係る床版架け替え工事用の防護柵によれば、床版架け替え工事中に、これを用いることで、他の車線の供用を安全に行うことができる。 The protective fence for deck replacement work of the present invention can be used to safely keep other lanes open during deck replacement work.
以下、本発明の実施の形態について、詳細に説明する。
図１は本発明の一実施形態として車線Ａの床版架け替え工事例を示す側面図である。また、図２は同上の工事例の平面図、図３は同上の工事例の正面図である。なお、橋軸直角方向を正面とし、橋軸方向を側面としている。
Hereinafter, an embodiment of the present invention will be described in detail.
Fig. 1 is a side view showing an example of deck replacement work for lane A as an embodiment of the present invention. Fig. 2 is a plan view of the same example of work, and Fig. 3 is a front view of the same example of work. Note that the direction perpendicular to the bridge axis is the front, and the direction of the bridge axis is the side.
図１の橋梁１は、道路橋を構成する互いに独立した並列な２つの橋梁のうちの一方であり、橋脚（図示せず）に支持させて４本並列に設けられるＨ形鋼からなる橋桁（主桁）２上に、床版３を並べて、路面を構成し、路面上に上り又は下りの片側２車線（車線Ａと車線Ｂ）を構成している。従って、もう１つの橋梁（図示せず）に反対方向の片側２車線（車線Ｃと車線Ｄ）が構成される。 Bridge 1 in Figure 1 is one of two parallel bridges that are independent of each other and make up a road bridge. The deck 3 is arranged on bridge girders (main girders) 2, which are made of four H-shaped steel beams that are supported in parallel by piers (not shown), to form a road surface, and two lanes (lanes A and B) on each side for uphill and downhill travel are formed on the road surface. Therefore, the other bridge (not shown) has two lanes (lanes C and D) on each side in the opposite direction.
床版の架け替えによる図１の橋梁１の再構築については、供用中の道路を対象とするものであるため、工事に伴う交通規制等によるソーシャルロスを最小限にすることが最重要課題となる。このため、床版の架け替えは、いわゆる「半断面施工」としている。 The reconstruction of Bridge 1 in Figure 1 by replacing the deck will involve a road that is currently in service, so the most important issue is to minimize social loss due to traffic restrictions and other factors associated with the construction. For this reason, the deck replacement will be carried out as what is known as "half-section construction."
すなわち、１車線ずつ床版の架け替えを行い、車線Ａの床版架け替え工事中は、車線Ｂを供用可能（一般車両の通行を可能）とする。そして、車線Ａの床版架け替え工事完了後に、車線Ｂの床版の架け替えを行い、車線Ｂの床版架け替え工事中は、車線Ａを供用可能とする。 In other words, the decks will be replaced one lane at a time, and lane B will be available for use (allowing general vehicles to pass) while work is being done to replace the deck of lane A. Then, after work is completed to replace the deck of lane A, the deck of lane B will be replaced, and lane A will be available for use while work is being done to replace the deck of lane B.
また、既存床版が１枚で橋軸直角方向に車線Ａと車線Ｂの２車線分（全幅）の長さを有している場合は、床版架け替え工事に先立って、既存床版を車線Ａと車線Ｂの境界で切断（縁切り）し、既存床版を１車線分ずつ撤去可能とする。新設床版については、１枚で橋軸直角方向に１車線分（半幅）の長さを有しているものを使用し、新設床版を１車線ずつ架設可能とする。 In addition, if the existing deck is a single piece that is long enough for two lanes (full width) for lanes A and B in the direction perpendicular to the bridge axis, the existing deck will be cut (edge cut) at the boundary between lanes A and B prior to deck replacement work, allowing the existing deck to be removed one lane at a time. For the new deck, a single piece that is long enough for one lane (half width) in the direction perpendicular to the bridge axis will be used, allowing the new deck to be erected one lane at a time.
次に、車線Ａの床版架け替え工事について、図１～図３を参照して説明する。なお、床版３について、既存床版と新設床版とを区別して示すときは、既存床版には「ａ」、新設床版には「ｎ」の添字を付して説明する。 Next, the deck replacement work for lane A will be explained with reference to Figures 1 to 3. When distinguishing between the existing deck and the new deck 3, the existing deck will be indicated with the suffix "a" and the new deck with the suffix "n."
床版撤去機１０は、架け替え対象の車線（車線Ａ）上に位置し、撤去前の既存床版３ａ上（又は既存床版３ａ上に設置したレール１１上）を床版架け替え工事の進行方向に移動しつつ、床版撤去機１０の後方側（床版架け替え工事の進行方向と反対側）で既存床版３ａを１つずつ撤去する。 The deck removal machine 10 is positioned on the lane to be replaced (lane A) and moves on the existing deck 3a (or on rails 11 installed on the existing deck 3a) before removal in the direction in which the deck replacement work is progressing, removing the existing deck 3a one by one on the rear side of the deck removal machine 10 (opposite the direction in which the deck replacement work is progressing).
床版撤去機１０は、その本体が門型構造であり、左右の接地部は門型構造を移動可能とする車輪（軌道輪を含む）１２により構成されている。そして、左右の接地部間には既存床版搬出用の運搬車両１５が通り抜けることができる空間を有している。 The deck removal machine 10 has a main body with a gate-shaped structure, and the left and right ground contact parts are made up of wheels (including raceways) 12 that allow the gate-shaped structure to move. There is also a space between the left and right ground contact parts that allows a transport vehicle 15 for removing the existing deck to pass through.
床版撤去機１０はまた、既存床版３ａの列上を移動するとともに、床版撤去機１０の本体から後方側（床版架け替え工事の進行方向と反対側）に張り出した位置に吊り点を有する。
従って、床版撤去機１０は、その本体の上部に支持されて後方へ張り出す桁１３と、桁１３の先端側に設けられた吊り装置１４とを含む。
The deck removal machine 10 also moves over the row of existing decks 3a and has a suspension point at a position that protrudes rearward from the main body of the deck removal machine 10 (opposite the direction in which the deck replacement work is progressing).
Therefore, the deck slab removal machine 10 includes a girder 13 supported on the upper part of the main body and extending rearward, and a lifting device 14 provided on the tip side of the girder 13.
吊り装置１４は、既存床版３ａを撤去のために吊り上げること、吊り上げた既存床版３ａの向きを橋軸直角方向から橋軸方向に変えること、及び、既存床版３ａを搬出用の運搬車両１５に吊り下ろすことが可能である。 The lifting device 14 is capable of lifting the existing deck 3a for removal, changing the orientation of the lifted existing deck 3a from a direction perpendicular to the bridge axis to the bridge axis direction, and hoisting the existing deck 3a onto a transport vehicle 15 for removal.
床版架設機２０は、架け替え対象の車線（車線Ａ）上で、床版架け替え工事の進行方向で見て、床版撤去機１０より後方に位置し、撤去された既存床版３ａに代えて自身で架設した新設床版３ｎ上（又は新設床版３ｎ上に設置したレール２１上）を床版架け替え工事の進行方向に移動しつつ、床版架設機２０の前方側（床版架け替え工事の進行方向と同じ側）で新設床版３ｎを１つずつ架設する。 The deck erection machine 20 is located behind the deck removal machine 10 on the lane to be replaced (lane A) when viewed in the direction of progress of the deck replacement work, and while moving in the direction of progress of the deck replacement work on the new deck 3n (or on the rails 21 installed on the new deck 3n) that it has erected itself in place of the removed existing deck 3a, it erects the new deck 3n one by one on the front side of the deck erection machine 20 (the same side as the direction of progress of the deck replacement work).
床版架設機２０は、その本体が門型構造であり、左右の接地部は門型構造を移動可能とする車輪（軌道輪を含む）２２により構成されている。そして、左右の接地部間には新設床版搬入用の運搬車両２５が通り抜けることができる空間を有している。 The deck erection machine 20 has a main body with a gate-shaped structure, and the left and right ground contact parts are made up of wheels (including raceways) 22 that allow the gate-shaped structure to move. There is also a space between the left and right ground contact parts that allows a transport vehicle 25 for bringing in the new deck to pass through.
床版架設機２０はまた、新設床版３ｎの列上を移動するとともに、床版架設機２０の本体から前方側（床版架け替え工事の進行方向と同じ側）に張り出した位置に吊り点を有する。
従って、床版架設機２０は、その本体の上部に支持されて前方へ張り出す桁２３と、桁２３の先端側に設けられた吊り装置２４とを含む。
The deck construction machine 20 also moves over the row of newly constructed decks 3n and has a suspension point at a position extending forward from the main body of the deck construction machine 20 (the same side as the progress of the deck replacement work).
Therefore, the deck erection machine 20 includes a girder 23 supported on the upper part of the main body and extending forward, and a lifting device 24 provided on the tip side of the girder 23.
吊り装置２４は、新設床版３ｎを搬入用の運搬車両２５から吊り上げること、吊り上げた新設床版３ｎの向きを橋軸方向から橋軸直角方向に変えること、及び、新設床版３ｎを架設のために吊り下ろすことが可能である。 The lifting device 24 is capable of lifting the new deck 3n from the delivery vehicle 25, changing the orientation of the lifted new deck 3n from the bridge axis direction to a direction perpendicular to the bridge axis, and lowering the new deck 3n for erection.
既存床版搬出用及び新設床版搬入用の運搬車両１５，２５としては、一般道路を走行可能な、タイヤ式のトレーラあるいはトラックなどを用いることができる。但し、専用の台車、例えばターンテーブル付きで、運搬時と、受取り・引渡し時とで、床版の向きを変えることができる台車などを用いることを妨げるものではない。ターンテーブル付きの台車を用いる場合は、床版撤去機１０及び床版架設機２０にて床版の向きを変える必要はなくなる。 As the transport vehicles 15, 25 for removing the existing deck and for bringing in the new deck, tire-type trailers or trucks that can run on public roads can be used. However, this does not preclude the use of dedicated carts, such as carts with turntables that can change the orientation of the deck during transportation and when receiving and delivering. When using carts with turntables, there is no need to change the orientation of the deck with the deck removal machine 10 and deck erection machine 20.
本実施形態での床版架け替え工事の流れは、以下の通りである。
（１）既存床版の撤去・搬出
床版撤去機１０により既存床版３ａを吊り上げて撤去し、撤去した既存床版３ａを搬出用の運搬車両１５に吊り下ろして、搬出させる。
The flow of deck replacement work in this embodiment is as follows.
(1) Removal and Transportation of Existing Deck The existing deck 3a is lifted and removed by the deck removal machine 10, and the removed existing deck 3a is then hoisted down onto a transport vehicle 15 for transportation.
（２）橋桁ケレン
撤去された既存床版３ａが載っていた橋桁２の上フランジのケレン作業を行い、防錆剤を塗布する。ここでは、Ｒ面取りロボットやケレンロボットを使用することで、作業員の負担を大幅に減らすことができる。
(2) Bridge girder cleaning The upper flange of the bridge girder 2 on which the removed existing deck 3a was placed is cleaned and an anti-rust agent is applied. Here, by using a R-chamfering robot and a cleaning robot, the burden on the workers can be significantly reduced.
（３）高さ調整工
橋桁２の上フランジ上に、床版の高さを調整するための硬質ゴムと、床版下の無収縮モルタルの漏れ止めとなるソールスポンジを設置する。
(3) Height adjustment work Hard rubber is installed on the upper flange of the bridge girder 2 to adjust the height of the deck, and sole sponge is installed to prevent leakage of the non-shrink mortar under the deck.
（４）新設床版の搬入・架設
搬入用の運搬車両２５により新設床版３ｎを搬入する。床版架設機２０は搬入用の運搬車両２５から新設床版３ｎを吊り上げた後、既存床版３ａ撤去済みの架設位置に、新設床版３ｎを吊り下ろして設置する。
(4) Delivery and installation of new deck slab The new deck slab 3n is delivered by the delivery transport vehicle 25. The deck erection machine 20 lifts the new deck slab 3n from the delivery transport vehicle 25, and then hoists and installs the new deck slab 3n at the installation position from which the existing deck slab 3a has been removed.
上記（１）～（４）の工程は図２に示されるように作業位置（作業エリア）をずらして同時に行われ、床版架け替え工事の進行方向に順次進行していく。 The above steps (1) to (4) are carried out simultaneously by shifting the work position (work area) as shown in Figure 2, and proceed sequentially in the direction of the deck replacement work.
これにより、上記（１）～（４）の各作業エリアを床版３枚分（１枚で２ｍ）とすると、４つの作業エリアで２ｍ×３×４＝２４ｍ、上記（１）～（４）の各作業エリアを床版４枚分とすると、４つの作業エリアで２ｍ×４×４＝３２ｍとなる。 As a result, if each of the work areas (1) to (4) above is the equivalent of three deck slabs (2m each), the four work areas will be 2m x 3 x 4 = 24m, and if each of the work areas (1) to (4) above is the equivalent of four deck slabs, the four work areas will be 2m x 4 x 4 = 32m.
従って、２４～３２ｍ（おおよそ２０～３０ｍ）のエリアで、床版無し、すなわち、橋桁２が露出し、穴があいた状態となり、このエリアは床版架け替え工事の進行に伴って移動していく。 Therefore, in the area of 24 to 32 m (approximately 20 to 30 m), the deck will be missing, meaning that bridge girder 2 will be exposed and will have holes, and this area will move as the deck replacement work progresses.
従って、床版撤去機１０後方で、床版架設機２０前方のエリアについて、供用中の車線Ｂを走行する一般車両が当該エリアに進入しないように、防護柵を配置する必要がある。 Therefore, a protective fence must be installed in the area behind the deck removal machine 10 and in front of the deck erection machine 20 to prevent general vehicles traveling on the in-use lane B from entering that area.
図１～図３の実施形態では、移動式防護柵３０が用いられる。
移動式防護柵３０は、床版撤去機１０の進行方向後方のエリア、床版架設機２０の進行方向前方のエリア、又は、床版撤去機１０と床版架設機２０との間のエリアと、これと隣接する供用中の他の車線（車線Ｂ）との境界に沿って、供用中の他の車線（車線Ｂ）側の床版上を、移動可能であり、移動しつつ防護柵として機能する。
In the embodiment of Figures 1-3, a movable safety fence 30 is used.
The mobile protective fence 30 is movable over the deck on the side of the other lane in use (lane B) along the boundary between the area behind the deck removal machine 10 in the direction of travel, the area in front of the deck installation machine 20 in the direction of travel, or the area between the deck removal machine 10 and the deck installation machine 20, and the adjacent lane in use (lane B), and functions as a protective fence while moving.
この場合、車線Ｂは床版架け替え前であるので、移動式防護柵３０は車線Ｂの既存床版上を移動することになる。 In this case, lane B has not yet had its deck replaced, so the movable guard fence 30 will move over the existing deck of lane B.
移動式防護柵３０は、詳しくは、前側台車３１と、後側台車３２と、前側台車３１と後側台車３２とに架け渡されて、これらの台車３１、３２に支持されるガードレール（フェンス部材）３４とを含む。ガイドレールは供用中の車線を走行する車両が床版架け替えのエリア、より具体的には床版架け替えにより開口となり得るエリアに進入しない防護となる部材の総称である。前側台車３１と後側台車３２はそれぞれ、床版撤去機１０と床版架設機２０に連動してもよいし、連動しなくてもよい。 Moveable protective fence 30 specifically includes a front bogie 31, a rear bogie 32, and a guardrail (fence member) 34 that is spanned between front bogie 31 and rear bogie 32 and supported by these bogies 31, 32. Guide rail is a general term for a member that prevents vehicles traveling on an in-service lane from entering an area where deck replacement is taking place, more specifically, an area that may become an opening due to deck replacement. Front bogie 31 and rear bogie 32 may or may not be linked to deck removal machine 10 and deck erection machine 20, respectively.
前側台車３１は、床版架け替え工事の進行方向前方の隣接する供用中の車線の床版上をその境界に沿って移動可能であり、床版撤去機１０と一体に移動し、また床版撤去機１０に支持させるように、床版撤去機１０の側部に連結部材３５を介して取付けても、連結されていてもよい。なお、床版撤去機１０が前側台車３１を支持することに代えて、ガードレール３４を支持してもよい。 The front bogie 31 can move along the boundary of the adjacent lane slab in use ahead of the direction of progress of the deck replacement work, and can be attached or connected to the side of the deck removal machine 10 via a connecting member 35 so that it moves together with the deck removal machine 10 and is supported by the deck removal machine 10. Note that instead of the deck removal machine 10 supporting the front bogie 31, the guardrail 34 can be supported.
後側台車３２は、床版架け替え工事の進行方向後方の隣接する供用中の車線の床版上をその境界に沿って移動可能であり、床版架設機２０と一体に移動し、また床版架設機２０に支持させるように、床版架設機２０の側部に連結部材３６を介して取付けても、連結されていてもよい。なお、床版架設機２０が後側台車３２を支持することに代えて、ガードレール３４を支持してもよい。 The rear bogie 32 can move along the boundary of the adjacent lane in use behind the direction of progress of the deck replacement work, and can be attached or connected to the side of the deck erection machine 20 via a connecting member 36 so that it moves together with the deck erection machine 20 and is supported by the deck erection machine 20. Note that instead of the deck erection machine 20 supporting the rear bogie 32, the deck erection machine 20 can support a guardrail 34.
ガードレール３４としては、鋼鉄製のもの、あるいは鋼材の表面に防舷材として用いられるゴム等を取付けたものが用いられる。
また、ガードレール３４は、前側台車３１と後側台車３２との少なくとも一方に、その移動方向にスライド可能に支持される。スライド可能な支持形態としては、例えば、前側台車３１と後側台車３２に、ブラケット（不図示）を設けておき、ブラケット上にガードレール３４を配置する形態や、連結部材３５及び連結部材３６自体が床版撤去機１０及び床版架設機２０の移動方向に対してはスライドできる弾性体を介して連結されていてもよい。
The guard rail 34 is made of steel or a steel material with rubber or the like attached thereto as a fender.
The guard rail 34 is supported by at least one of the front cart 31 and the rear cart 32 so as to be slidable in the direction of movement thereof. As a slidable support form, for example, brackets (not shown) are provided on the front cart 31 and the rear cart 32, and the guard rail 34 is disposed on the brackets, or the connecting members 35 and 36 themselves may be connected via elastic bodies that can slide in the direction of movement of the deck slab removal machine 10 and the deck slab erection machine 20.
このような移動式防護柵３０を用いることで、床版架け替え工事に進行に伴って、床版撤去機１０及び床版架設機２０が移動すると、これに合わせて移動式防護柵３０を移動させることができ、防護機能を維持することができる。 By using such a movable guard fence 30, when the deck removal machine 10 and deck erection machine 20 move as the deck replacement work progresses, the movable guard fence 30 can be moved accordingly, thereby maintaining the protective function.
図４は車線Ｂの床版架け替え工事例を示す平面図である。
これは、車線Ａの床版架け替え工事の完了後に、車線Ｂの床版架け替え工事を行う例であり、車線Ｂの床版架け替え工事の進行方向は、車線Ａの床版架け替え工事の進行方向（図１）とは逆方向にしている。このとき、車線Ａについては、床版架け替え済みであるので、供用可能としている。
FIG. 4 is a plan view showing an example of deck replacement work for lane B.
This is an example in which the deck replacement work for lane B is carried out after the deck replacement work for lane A is completed, and the direction of the deck replacement work for lane B is opposite to the direction of the deck replacement work for lane A (Figure 1). At this time, lane A is available for use because the deck replacement work has already been completed.
移動式防護柵３０は、床版撤去機１０の進行方向後方のエリア、床版架設機２０の進行方向前方のエリア、又は、床版撤去機１０と床版架設機２０との間のエリアと、これと隣接する供用中の他の車線（車線Ａ）との境界に沿って、供用中の他の車線（車線Ａ）側の床版上を、移動可能であり、移動しつつ防護柵として機能する。 The mobile guardrail 30 is movable over the deck on the side of the other lane in use (lane A) along the boundary between the area behind the deck removal machine 10 in the direction of travel, the area ahead of the deck erection machine 20 in the direction of travel, or the area between the deck removal machine 10 and the deck erection machine 20, and the adjacent other lane in use (lane A), and functions as a guardrail while moving.
この場合、車線Ａは床版架け替え済みであるので、移動式防護柵３０の台車３１、３２は車線Ａの新設床版上を移動することになる。 In this case, since the deck of lane A has already been replaced, the trolleys 31 and 32 of the movable guardrail 30 will move over the newly installed deck of lane A.
次に、移動式防護柵３０の各種態様について説明する。
図５は台車及びガードレールの配置パターンを示している。
Next, various aspects of the movable safety fence 30 will be described.
FIG. 5 shows the layout pattern of the trolleys and guardrails.
図５（Ａ）は、前後の２つの台車（前側台車３１と後側台車３２）を用い、これらの台車３１、３２に架け渡してガードレール３４を設けたものである。 Figure 5 (A) shows a system using two front and rear bogies (front bogie 31 and rear bogie 32) with a guard rail 34 spanning these bogies 31 and 32.
ここで、ガードレール３４は、前側台車３１と後側台車３２とのうち、少なくとも一方に、移動方向にスライド可能に支持させている。このようにスライド可能に支持させることで、床版撤去機１０と床版架設機２０との距離の変化などによる、前側台車３１と後側台車３２との距離の変化を吸収することができる。 The guardrail 34 is supported on at least one of the front and rear carriages 31 and 32 so that it can slide in the direction of movement. By supporting it so that it can slide, it is possible to absorb changes in the distance between the front and rear carriages 31 and 32 due to changes in the distance between the deck removal machine 10 and the deck erection machine 20, etc.
また、ガードレール３４は、中間部で２分割し、分割部でピン結合することにより、中折れ部３７を形成している。
このような中折れ部３７を設けることで、曲線道路の場合にこれに沿って移動させることが可能となる。なお、曲線道路では、床版の架設の際に、前後の床版間の隙間（間詰め部）を左右で異ならせることにより対応している。
The guard rail 34 is divided into two parts in the middle and joined by a pin at the divided part to form a bent part 37 .
By providing such a bent portion 37, it becomes possible to move along the curved road. Note that, when erecting the deck on a curved road, the gap between the front and rear decks (filling portion) is made different on the left and right.
図５（Ｂ）では、前側台車３１と後側台車３２との間に配置されてガードレール３４の中間部を支持する中間台車３３を設けている。
ガードレール３４は、前側台車３１と中間台車３３との間、及び、中間台車３３と後側台車３２との間で、分割し（３分割）、各分割部でピン結合することにより、２箇所の中折れ部３７を形成している。
In FIG. 5B, an intermediate bogie 33 is provided between the front bogie 31 and the rear bogie 32 to support the intermediate portion of the guard rail 34 .
The guardrail 34 is divided (into three parts) between the front bogie 31 and the middle bogie 33, and between the middle bogie 33 and the rear bogie 32, and two bent sections 37 are formed by pin-connecting each section.
図５（Ｃ）では、前側台車３１と後側台車３２との間に配置されてガードレール３４の中間部を支持する複数の中間台車３３を設けることで、多数の台車を連続的に配置している。そして、ガードレール３４は、各台車間で分割し、各分割部でピン結合することにより、多数の中折れ部３７を形成している。 In FIG. 5(C), multiple intermediate bogies 33 are provided between the front bogie 31 and the rear bogie 32 to support the middle portion of the guardrail 34, allowing multiple bogies to be arranged continuously. The guardrail 34 is divided between each bogie, and each divided portion is connected with a pin to form multiple bent portions 37.
図５（Ｄ）では、図５（Ｃ）と同様に、前側台車３１と後側台車３２との間に配置されてガードレール３４の中間部を支持する複数の中間台車３３を設けることで、多数の台車を連続的に配置している。そして、ガードレール３４は、各台車間で分割し、前後の台車同士を中折れ部としての連結器３８により中折れ可能に連結している。 In Fig. 5(D), similar to Fig. 5(C), multiple intermediate bogies 33 are provided between the front bogie 31 and the rear bogie 32 to support the middle part of the guardrail 34, allowing multiple bogies to be arranged continuously. The guardrail 34 is divided between each bogie, and the front and rear bogies are connected to each other by couplers 38 that function as a center bending part so that they can be folded.
上記のように、ガードレール３４の長手方向の中間部に折れ曲がり可能な１～複数の中折れ部３７を設けたり、台車３１、３２、３３の連結部（連結器３８）を折れ曲がり可能な中折れ部としたりすることにより、曲線道路に対応することができる。 As described above, by providing one or more bendable bending sections 37 in the middle of the guardrail 34 in the longitudinal direction, or by making the connecting section (coupler 38) of the trolleys 31, 32, and 33 a bendable bending section, it is possible to accommodate curved roads.
次に、移動式防護柵３０の各種支持方式について図６～図８により説明する。
図６は移動式防護柵の支持方式１を示す平面図(A)及び側面図(B)である。
図６の例では、前側台車３１はその側部を連結部材３５により床版撤去機１０の側部に連結して支持させ、後側台車３２はその側部を連結部材３６により床版架設機２０の側部に連結して支持させている。
Next, various support methods for the movable safety fence 30 will be described with reference to Figs.
FIG. 6 is a plan view (A) and a side view (B) showing a support method 1 for a movable protective fence.
In the example of Figure 6, the front cart 31 has its side connected to the side of the deck removal machine 10 by a connecting member 35 for support, and the rear cart 32 has its side connected to the side of the deck erection machine 20 by a connecting member 36 for support.
上記のように、移動式防護柵３０（ガードレール３４）に作用する外力に対して、少なくとも、前側台車３１が床版撤去機１０に支持され、及び／又は、後側台車３２が床版架設機２０に支持されることにより、供用中の車線Ｂを走行する車両が移動式防護柵３０（ガードレール３４）に衝突しても、床版架け替え工事中の車線Ａへの進入を防止することができる。 As described above, at least the front cart 31 is supported by the deck removal machine 10 and/or the rear cart 32 is supported by the deck erection machine 20 against external forces acting on the movable protective fence 30 (guardrail 34), so that even if a vehicle traveling on lane B in service collides with the movable protective fence 30 (guardrail 34), it can be prevented from entering lane A during deck replacement work.
図７は移動式防護柵の支持方式２を示す平面図(A)及び側面図(B)である。
図７の例では、ガードレール３４に十分な厚さ（質量）を持たせることで、前側台車３１、後側台車３２及び中間台車３３を床版撤去機１０及び床版架設機２０に連結することなく、移動式防護柵３０全体の自重で、保持されるようにしてある。
FIG. 7 is a plan view (A) and a side view (B) showing a support method 2 for a movable protective fence.
In the example of Figure 7, the guardrail 34 is made to have sufficient thickness (mass) so that the front cart 31, the rear cart 32 and the middle cart 33 can be held in place by the weight of the entire mobile protective fence 30, without being connected to the deck removal machine 10 and the deck erection machine 20.
すなわち、移動式防護柵３０に作用する外力に対して、ガードレール３４含む移動式防護柵３０全体の自重により台車３１、３２、３３と路面との間に生じる摩擦力で対抗するのである。 In other words, the external force acting on the movable protective fence 30 is countered by the frictional force generated between the carts 31, 32, 33 and the road surface due to the weight of the entire movable protective fence 30 including the guardrail 34.
図８は移動式防護柵の支持方式３を示す平面図(A)及び側面図(B)である。
図８の例では、移動式防護柵３０に作用する外力に対して、移動式防護柵３０が、既存床版３ａが撤去されたエリアにて床版３が架設されていない露出した橋桁（主桁）２に支持される。
FIG. 8 is a plan view (A) and a side view (B) showing a support method 3 for a movable protective fence.
In the example of Figure 8, against external forces acting on the movable protective fence 30, the movable protective fence 30 is supported by an exposed bridge girder (main girder) 2 where no deck slab 3 is installed in an area where the existing deck slab 3a has been removed.
図８の例では、移動式防護柵３０は、前側台車３１と後側台車３２との間に２つの中間台車３３、３３を有するとともに、これら２つの中間台車３３、３３に横桁３９、３９を介して連結されてフレーム構造をなす２つの補助台車４０、４０を有する。 In the example of Figure 8, the movable protective fence 30 has two intermediate bogies 33, 33 between the front bogie 31 and the rear bogie 32, and two auxiliary bogies 40, 40 that are connected to these two intermediate bogies 33, 33 via cross beams 39, 39 to form a frame structure.
補助台車４０、４０は、既存床版が撤去された床版３が架設されていないエリアの橋桁２又はこれに予め取付けられた補助桁４２上を移動可能となっている。 The auxiliary carts 40, 40 are capable of moving over the bridge girder 2 or the auxiliary girder 42 previously attached to it in the area where the existing deck slab 3 has not been installed after the existing deck slab has been removed.
補助桁４２を用いる場合、床版架け替え工事に先立って、橋桁２の側部に適当間隔で支持部材４１を取付け、支持部材４１により支持させて補助桁４２を設置すればよい。この作業は交通規制を行うことなく実施することができる。 When using auxiliary girders 42, support members 41 are attached to the sides of the bridge girder 2 at appropriate intervals prior to the deck replacement work, and the auxiliary girders 42 are installed while being supported by the support members 41. This work can be carried out without traffic restrictions.
次に、台車（前側台車３１、後側台車３２又は中間台車３３）のより具体的な構成例について、図９により説明する。
図９は、図５（Ｄ）のタイプの台車の具体例（具体化のアイデアを詰め込んだ例）を示す平面図(A)、正面図(B)及び側面図(C)である。
Next, a more specific example of the configuration of the bogies (the front bogie 31, the rear bogie 32, or the middle bogie 33) will be described with reference to FIG.
FIG. 9 is a plan view (A), a front view (B) and a side view (C) showing a specific example (an example packed with various ideas) of a dolly of the type shown in FIG. 5(D).
図９の台車は、台車本体５１と、台車本体５１の上部に設けたガードレール載置部５２と、台車本体５１の前側底部及び後側底部に配置して回転可能に支持したウレタン車輪５３と、ウレタン車輪５３を回転駆動するモータ５４と、を含んで構成される。 The trolley in FIG. 9 is composed of a trolley body 51, a guardrail mounting section 52 provided on the upper part of the trolley body 51, urethane wheels 53 arranged on the front and rear bottom parts of the trolley body 51 and supported rotatably, and a motor 54 that rotates and drives the urethane wheels 53.
台車本体５１のガードレール載置部５２には、台車本体５１とほぼ同じ長さのガードレール（図示せず）が載置されて、支持される。
台車本体５１の前端部及び後端部には、前後の台車（図示せず）と中折れ可能にピン連結するための連結器５５が設けられている。
A guardrail (not shown) having approximately the same length as the carriage body 51 is placed and supported on the guardrail placement portion 52 of the carriage body 51 .
Couplers 55 are provided at the front and rear ends of the bogie body 51 for pin-connecting to the front and rear bogies (not shown) in a manner that allows the bogie body 51 to fold in the center.
また、台車本体５１の前側側部及び後側側部には、上下方向に延びる軸５６が設けられ、軸５６の下端側にガイドローラ５７が回転自在に取付けられている。従って、ガイドローラ５７は水平面内を回転可能であり、台車本体５１を移動させる際に、このガイドローラ５７を供用中の床版３の端面にガイドさせ、端面から反力を受けて押付けながら移動させることで、台車本体５１の移動経路を安定させることができる。 In addition, a shaft 56 extending in the vertical direction is provided on the front and rear sides of the bogie body 51, and a guide roller 57 is rotatably attached to the lower end of the shaft 56. Therefore, the guide roller 57 can rotate in a horizontal plane, and when the bogie body 51 is moved, the guide roller 57 is guided against the end face of the deck slab 3 in use, and is moved while being pressed by the reaction force from the end face, thereby stabilizing the movement path of the bogie body 51.
図示の実施形態はあくまで本発明を概略的に例示するものであり、本発明は、説明した実施形態により直接的に示されるものに加え、特許請求の範囲内で当業者によりなされる各種の改良・変更を包含するものであることは言うまでもない。
なお、出願当初の請求項は以下の通りであった。
［請求項１］
複数の車線を有する橋梁において、少なくとも１つの車線の床版の列に対し、一の進行方向に順次、床版の架け替えを行う方法であって、
床版撤去機により、前記一の進行方向に順次、既存床版を撤去する既存床版撤去工程を含み、
前記床版撤去機の進行方向後方の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置することを特徴とする、床版架け替え方法。
［請求項２］
複数の車線を有する橋梁において、少なくとも１つの車線の床版の列に対し、一の進行方向に順次、床版の架け替えを行う方法であって、
床版架設機により、前記一の進行方向に順次、新設床版を架設する新設床版架設工程を含み、
前記床版架設機の進行方向前方の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置することを特徴とする、床版架け替え方法。
［請求項３］
複数の車線を有する橋梁において、少なくとも１つの車線の床版の列に対し、一の進行方向に順次、床版の架け替えを行う方法であって、
床版撤去機により前記一の進行方向に順次、既存床版を撤去する既存床版撤去工程と、床版架設機により前記一の進行方向に順次、新設床版を架設する新設床版架設工程と、を含み、
前記床版撤去機と前記床版架設機との間の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置することを特徴とする、床版架け替え方法。
［請求項４］
床版架け替え中の車線と、これに隣接する供用中の車線との間に配置される防護柵であって、
床版架け替え工事の進行方向前方の隣接する供用中の車線の床版上をその境界に沿って移動可能な前側台車と、
床版架け替え工事の進行方向後方の隣接する供用中の車線の床版上をその境界に沿って移動可能な後側台車と、
前記前側台車と前記後側台車とに架け渡されて、これらの台車に支持されるガードレールと、
を含むことを特徴とする、床版架け替え工事用の防護柵。
［請求項５］
前記前側台車と前記後側台車との間に配置されて前記ガードレールの中間部を支持する、１～複数の中間台車を更に含むことを特徴とする、請求項４記載の床版架け替え工事用の防護柵。
［請求項６］
前記ガードレールは、前記台車のうち、少なくとも、前記前側台車又は前記後側台車に、その移動方向にスライド可能に支持されることを特徴とする、請求項４又は請求項５記載の床版架け替え工事用の防護柵。
［請求項７］
前記防護柵は、その長手方向の中間部に、折れ曲がり可能な１～複数の中折れ部を有することを特徴とする、請求項４～請求項６のいずれか１つに記載の床版架け替え工事用の防護柵。
［請求項８］
前記防護柵に作用する外力に対して、少なくとも、前記前側台車が床版撤去機に支持されることを特徴とする、請求項４～請求項７のいずれか１つに記載の床版架け替え工事用の防護柵。
［請求項９］
前記防護柵に作用する外力に対して、少なくとも、前記後側台車が床版架設機に支持されることを特徴とする、請求項４～請求項７のいずれか１つに記載の床版架け替え工事用の防護柵。
［請求項１０］
前記防護柵に作用する外力に対して、前記防護柵が、既存床版が撤去されたエリアの橋桁に支持されることを特徴とする、請求項４～請求項７のいずれか１つに記載の床版架け替え工事用の防護柵。
It goes without saying that the illustrated embodiments are merely schematic examples of the present invention, and that the present invention encompasses various modifications and variations that may be made by those skilled in the art within the scope of the claims, in addition to those directly shown in the described embodiments.
The claims as originally filed were as follows:
[Claim 1]
A method for replacing decks in a row of decks of at least one lane in a bridge having multiple lanes in a sequential manner in one direction of travel, comprising the steps of:
An existing deck removal process is included in which the existing deck is removed sequentially in the one traveling direction by the deck removal machine;
A deck replacement method, characterized in that a movable guard fence is placed along the boundary with another adjacent lane in service behind the deck removal machine in the direction of travel.
[Claim 2]
A method for replacing decks in a row of decks of at least one lane in a bridge having multiple lanes in a sequential manner in one direction of travel, comprising the steps of:
A new deck erection process is included in which a new deck is erected in sequence in the one traveling direction by a deck erection machine,
A deck replacement method, characterized in that a movable guard fence is placed along the boundary between the deck erection machine and another adjacent lane in service ahead of the machine in the direction of travel.
[Claim 3]
A method for replacing decks in a row of decks of at least one lane in a bridge having multiple lanes in a sequential manner in one direction of travel, comprising the steps of:
The method includes an existing deck removal process in which an existing deck is removed in the one traveling direction by a deck removal machine, and a new deck installation process in which a new deck is installed in the one traveling direction by a deck installation machine,
A deck replacement method, characterized in that a movable guardrail is placed along a boundary between the deck removal machine and the deck erection machine and another adjacent lane in service.
[Claim 4]
A guardrail is placed between a lane undergoing deck replacement and an adjacent lane in service,
A front bogie that can move along the boundary of the adjacent lane deck in service ahead of the deck replacement work;
A rear bogie that can move along the boundary of the adjacent lane deck in service behind the deck replacement work;
a guard rail that is spanned across the front bogie and the rear bogie and supported by these bogies;
A protective fence for deck replacement work, comprising:
[Claim 5]
The protective fence for deck replacement work as described in claim 4, further comprising one or more intermediate bogies arranged between the front bogie and the rear bogie and supporting the middle portion of the guardrail.
[Claim 6]
The protective fence for deck replacement work described in claim 4 or claim 5, characterized in that the guardrail is supported by at least the front bogie or the rear bogie among the bogies so as to be slidable in the direction of movement thereof.
[Claim 7]
The protective fence for deck replacement work described in any one of claims 4 to 6, characterized in that the protective fence has one or more bendable middle bending sections in the middle of its longitudinal direction.
[Claim 8]
A protective fence for deck replacement work as described in any one of claims 4 to 7, characterized in that at least the front bogie is supported by a deck removal machine against external forces acting on the protective fence.
[Claim 9]
A protective fence for deck replacement work as described in any one of claims 4 to 7, characterized in that at least the rear bogie is supported by a deck erection machine against external forces acting on the protective fence.
[Claim 10]
A protective fence for deck replacement work as described in any one of claims 4 to 7, characterized in that the protective fence is supported by a bridge girder in an area where the existing deck has been removed against external forces acting on the protective fence.
１ 橋梁
２ 橋桁（主桁）
３ 床版（３ａ：既存床版、３ｎ：新設床版）
１０ 床版撤去機
１１ レール
１２ 車輪（軌道輪）
１３ 桁
１４ 吊り装置
１５ 既存床版搬出用の運搬車両
２０ 床版架設機
２１ レール
２２ 車輪（軌道輪）
２３ 桁
２４ 吊り装置
２５ 新設床版搬入用の運搬車両
３０ 移動式防護柵
３１ 前側台車
３２ 後側台車
３３ 中間台車
３４ ガードレール
３５、３６ 連結部材
３７ 中折れ部
３８ 連結器（中折れ部）
３９ 横桁
４０ 補助台車
４１ 支持部材
４２ 補助桁
５１ 台車本体
５２ ガードレール載置部
５３ ウレタン車輪
５４ モータ
５５ 連結器
５６ 軸
５７ ガイドローラ
1 Bridge 2 Bridge girder (main girder)
3. Deck (3a: Existing Deck, 3n: New Deck)
10 Deck removal machine 11 Rail 12 Wheel (raceway)
13 Girder 14 Lifting device 15 Transport vehicle for carrying out existing deck 20 Deck erection machine 21 Rail 22 Wheel (raceway)
23 Girder 24 Lifting device 25 Transport vehicle for carrying new deck 30 Mobile protective fence 31 Front bogie 32 Rear bogie 33 Middle bogie 34 Guard rails 35, 36 Connecting member 37 Center bending portion 38 Coupler (center bending portion)
39 Cross beam 40 Auxiliary carriage 41 Support member 42 Auxiliary beam 51 Carriage body 52 Guard rail mounting portion 53 Urethane wheel 54 Motor 55 Coupler 56 Shaft 57 Guide roller
Claims (7)
床版撤去機により前記一の進行方向に順次、既存床版を撤去する既存床版撤去工程と、前記床版撤去機よりも前記一の進行方向後方に位置する床版架設機により前記一の進行方向に順次、新設床版を架設する新設床版架設工程と、を含み、
前記床版撤去機と前記床版架設機との間の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置する、床版架け替え方法において、
前記防護柵は、
前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な前側台車と、
前記前側台車よりも前記一の進行方向後方に位置し、かつ、前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な後側台車と、
前記前側台車と前記後側台車とに架け渡されて、前記前側台車及び前記後側台車に支持されるフェンス部材と、
を含み、
前記フェンス部材は、前記床版撤去機と前記床版架設機との間であって床版の架け替えにより開口となり得るエリアへの進入防護となる部材であり、
前記床版撤去機は、移動用の車輪を接地部に有して、撤去前の既存床版上を前記一の進行方向に移動可能であり、
前記前側台車は、前記床版撤去機の移動に連動して移動する、床版架け替え方法。 A method for replacing decks in a row of decks of at least one lane in a bridge having multiple lanes in a sequential manner in one direction of travel, comprising the steps of:
The method includes an existing deck removal process in which an existing deck is removed in the one traveling direction by a deck removal machine, and a new deck installation process in which a new deck is installed in the one traveling direction by a deck installation machine located behind the deck removal machine in the one traveling direction ,
A method for replacing a deck, comprising: disposing a movable guard fence along a boundary between the deck removal machine and the deck erection machine and another adjacent lane in service;
The protective fence is:
A front bogie that can move along the boundary on the deck of the adjacent other lane in service;
A rear bogie located behind the front bogie in the one traveling direction and capable of moving along the boundary on the deck of the other adjacent lane in service;
a fence member that is bridged across the front bogie and the rear bogie and supported by the front bogie and the rear bogie;
Including,
The fence member is a member that prevents entry into an area between the deck removal machine and the deck erection machine that may become an opening due to replacement of the deck,
The deck removal machine has wheels for movement on a ground contact portion and is capable of moving on the existing deck before removal in the one traveling direction,
The front bogie moves in conjunction with the movement of the deck removal machine, thereby forming a deck replacement method.
床版撤去機により前記一の進行方向に順次、既存床版を撤去する既存床版撤去工程と、前記床版撤去機よりも前記一の進行方向後方に位置する床版架設機により前記一の進行方向に順次、新設床版を架設する新設床版架設工程と、を含み、
前記床版撤去機と前記床版架設機との間の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置する、床版架け替え方法において、
前記防護柵は、
前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な前側台車と、
前記前側台車よりも前記一の進行方向後方に位置し、かつ、前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な後側台車と、
前記前側台車と前記後側台車とに架け渡されて、前記前側台車及び前記後側台車に支持されるフェンス部材と、
を含み、
前記フェンス部材は、前記床版撤去機と前記床版架設機との間であって床版の架け替えにより開口となり得るエリアへの進入防護となる部材であり、
前記床版架設機は、移動用の車輪を接地部に有して、架設後の新設床版上を前記一の進行方向に移動可能であり、
前記後側台車は、前記床版架設機の移動に連動して移動する、床版架け替え方法。 A method for replacing decks in a row of decks of at least one lane in a bridge having multiple lanes in a sequential manner in one direction of travel, comprising the steps of:
The method includes an existing deck removal process in which an existing deck is removed in the one traveling direction by a deck removal machine, and a new deck installation process in which a new deck is installed in the one traveling direction by a deck installation machine located behind the deck removal machine in the one traveling direction ,
A method for replacing a deck, comprising: disposing a movable guard fence along a boundary between the deck removal machine and the deck erection machine and another adjacent lane in service;
The protective fence is:
A front bogie that can move along the boundary on the deck of the adjacent other lane in service;
A rear bogie located behind the front bogie in the one traveling direction and capable of moving along the boundary on the deck of the other adjacent lane in service;
a fence member that is bridged across the front bogie and the rear bogie and supported by the front bogie and the rear bogie;
Including,
The fence member is a member that prevents entry into an area between the deck removal machine and the deck erection machine that may become an opening due to replacement of the deck,
The deck erection machine has wheels for movement on a ground contact portion and is capable of moving on the newly installed deck in the one traveling direction after erection,
The deck replacement method, wherein the rear bogie moves in conjunction with the movement of the deck erection machine.
床版撤去機により前記一の進行方向に順次、既存床版を撤去する既存床版撤去工程と、前記床版撤去機よりも前記一の進行方向後方に位置する床版架設機により前記一の進行方向に順次、新設床版を架設する新設床版架設工程と、を含み、
前記床版撤去機と前記床版架設機との間の隣接する供用中の他の車線との境界に沿って、移動可能な防護柵を配置する、床版架け替え方法において、
前記防護柵は、
前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な前側台車と、
前記前側台車よりも前記一の進行方向後方に位置し、かつ、前記隣接する供用中の他の車線の床版上を前記境界に沿って移動可能な後側台車と、
前記前側台車と前記後側台車とに架け渡されて、前記前側台車及び前記後側台車に支持されるフェンス部材と、
を含み、
前記フェンス部材は、前記床版撤去機と前記床版架設機との間であって床版の架け替えにより開口となり得るエリアへの進入防護となる部材であり、
前記床版撤去機は、移動用の車輪を接地部に有して、撤去前の既存床版上を前記一の進行方向に移動可能であり、
前記床版架設機は、移動用の車輪を接地部に有して、架設後の新設床版上を前記一の進行方向に移動可能であり、
前記前側台車及び前記後側台車は、前記床版撤去機及び前記床版架設機の移動に連動して移動する、床版架け替え方法。 A method for replacing decks in a row of decks of at least one lane in a bridge having multiple lanes in a sequential manner in one direction of travel, comprising the steps of:
The method includes an existing deck removal process in which an existing deck is removed in the one traveling direction by a deck removal machine, and a new deck installation process in which a new deck is installed in the one traveling direction by a deck installation machine located behind the deck removal machine in the one traveling direction ,
A method for replacing a deck, comprising: disposing a movable guard fence along a boundary between the deck removal machine and the deck erection machine and another adjacent lane in service;
The protective fence is:
A front bogie that can move along the boundary on the deck of the adjacent other lane in service;
A rear bogie that is located behind the front bogie in the one traveling direction and is movable along the boundary on the deck of the other adjacent lane in service;
a fence member that is bridged across the front bogie and the rear bogie and supported by the front bogie and the rear bogie;
Including,
The fence member is a member that prevents entry into an area between the deck removal machine and the deck erection machine that may become an opening due to replacement of the deck,
The deck removal machine has wheels for movement on a ground contact portion and is capable of moving on the existing deck before removal in the one traveling direction,
The deck erection machine has wheels for movement on a ground contact portion and is capable of moving on the newly installed deck in the one traveling direction after erection,
A deck replacement method, in which the front bogie and the rear bogie move in conjunction with the movement of the deck removal machine and the deck erection machine.
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| CN110725612A (en) | 2019-10-25 | 2020-01-24 | 湖北恩众建筑工程有限公司 | Portable safe anti-creep municipal works guardrail |
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