JP2712015B2 - Removal method and device for floor slab - Google Patents
Removal method and device for floor slabInfo
- Publication number
- JP2712015B2 JP2712015B2 JP32244495A JP32244495A JP2712015B2 JP 2712015 B2 JP2712015 B2 JP 2712015B2 JP 32244495 A JP32244495 A JP 32244495A JP 32244495 A JP32244495 A JP 32244495A JP 2712015 B2 JP2712015 B2 JP 2712015B2
- Authority
- JP
- Japan
- Prior art keywords
- slab
- floor slab
- floor
- divided
- peeled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【0001】[0001]
【発明の属する技術分野】この発明は床版の撤去方法及
び装置に関する。The present invention relates to a method and an apparatus for removing a slab.
【0002】[0002]
【従来の技術】床版は普通、鉄筋コンクリートである。
改修により床版を更新するには、まず古い床版を撤去し
なければならない。そのため床版を桁に直角に切り刻ん
で、短ざく状に分割して撤去する。しかし床版下面のア
ンカー筋が桁上面に溶接されているので、これを引きち
ぎるか、切離さねば撤去できない。床版を強引にこじ起
こすか引上げると、多くは溶接部が破断して桁から浮上
がるが、溶接部が強いとアンカー筋が床版内部から抜け
出るので、これは溶断して切離す。その後まとめて古い
床版を撤去し更新する。BACKGROUND OF THE INVENTION Floor slabs are usually reinforced concrete.
To renew a slab due to renovation, the old slab must first be removed. For this reason, the floor slab is cut at a right angle to the girder, divided into strips and removed. However, since the anchor bar on the lower surface of the floor slab is welded to the upper surface of the slab, it cannot be removed unless it is torn or cut off. When the floor slab is forcibly twisted or pulled up, the welded portion often breaks and rises from the girders, but if the welded portion is strong, the anchor streaks come out of the interior of the floor slab, so this is cut off by cutting. After that, the old floor slabs are removed and updated collectively.
【0003】床版のアンカー筋を桁から引きちぎる方法
の従来技術としては特公平7−26369、特公平7−
26371の2発明がある。いずれも短ざく形に分割切
断した床版の上に撤去桁(梁材)を渡し掛け、これを両
隣の床版で支える。そしてその撤去桁の上に立てたセン
ターホールジャッキのけん引棒を、当該床版の吊り穴に
掛けて強引に引上げるのが特公平7−26369であ
る。特公平7−26371は当該床版と撤去桁を鋼棒で
つなぎ、普通の油圧ジャッキで撤去桁の両端を押上げ
る。[0003] As a prior art of a method of tearing off the anchor bar of a floor slab from a girder, Japanese Patent Publication No. 7-26369 and Japanese Patent Publication No.
26371. In each case, the removal girders (beams) are spread over the floor slabs that have been split and cut into short shapes, and this is supported by the floor slabs on both sides. It is Japanese Patent Publication No. 7-26369 that the tow bar of the center hole jack erected on the removed girder is hung on the hanging hole of the floor slab and forcibly pulled up. In Japanese Patent Publication No. 7-26371, the floor slab and the removal girder are connected by a steel bar, and both ends of the removal girder are pushed up by a normal hydraulic jack.
【0004】[0004]
【発明が解決しようとする課題】床版の撤去作業は文字
通りの現場作業で、作業者の労力に負うところが多い。
従って道具や設備は長大なものや重いものは避けたい。
上記2発明の場合、通常2m幅に分割切断する床版の上
にまたがる大きさで、しかも曲げ強度十分な撤去桁は、
キャスタ(車輪)付きでも押し動かすのが容易でない。
この発明はこれを課題として取上げた。The work of removing the floor slab is literally a site work, and often depends on the labor of the operator.
Therefore, we want to avoid long and heavy tools and equipment.
In the case of the above two inventions, the removal girder that is a size that straddles the floor slab that is normally cut into 2 m widths and that has sufficient bending strength,
It is not easy to push and move even with casters (wheels).
The present invention has taken this as an object.
【0005】[0005]
【課題を解決するための手段】この発明の床版の撤去方
法は、コンクリート床版を分割切断し、これを一枚ずつ
橋桁から引剥がした後、撤去し更新する床版改修工事に
際し、引剥がすべき分割床版に運搬用吊り穴を明けて吊
上用鋼棒を通し、その鋼棒の上部を、梁材に係合させ、
上記梁材の一端を載せる支点台を当該床版上に立て、梁
材他端を載せる油圧ジャッキを隣接床版上に立て、上記
ジャッキにより上記梁材他端と共に当該床版を押上げ
て、その床版アンカー筋を桁から引きちぎるか、又は溶
断可能なまで床版から引抜くことを特徴とする。According to the method of removing a slab of the present invention, a concrete slab is divided and cut, and the slab is peeled off one by one from a bridge girder. Open a hanging hole for transportation on the divided floor slab to be peeled, pass a steel rod for lifting, and engage the upper part of the steel rod with the beam,
A fulcrum stand on which one end of the beam is placed on the floor slab, a hydraulic jack on which the other end of the beam is placed is erected on an adjacent floor slab, and the jack pushes up the floor slab together with the other end of the beam, The slab anchor bar is torn off from the slab or pulled out from the slab until fusing is possible.
【0006】また上記梁材の一端に取付けた上下調節可
能な支点台下面を当該床版上に載せ、梁材他端に取付け
た下向き油圧ジャッキを隣接床版上に当て、上記ジャッ
キの加圧反力により上記梁材と共に当該床版を押上げ
て、その床版アンカー筋を桁から引きちぎるか、又は溶
断可能なまで床版から引抜くことを特徴とする。Further, the lower surface of a fulcrum that can be adjusted up and down attached to one end of the beam is placed on the floor slab, and a downward hydraulic jack attached to the other end of the beam is applied to an adjacent floor slab to press the jack. The floor slab is pushed up together with the beam material by a reaction force, and the floor slab anchor bar is torn off from the spar or pulled out from the floor slab until fusing is possible.
【0007】さらにまたコンクリート床版を分割切断
し、これを一枚ずつ桁から引剥がした後、撤去し更新す
る床版改修工事に際し、引剥がすべき分割床版に運搬用
吊り穴を明けて吊具を付け、その吊具を梁材の一端に取
付け、その梁材の下面中央寄りの支点台を隣接床版上に
載せ、上記梁材の他端上面に立てたセンターホールジャ
ッキのけん引棒下端を、上記隣接床版のさらに外側のア
ンカー筋健在の隣接床版の吊り穴に係合させ、上記ジャ
ッキにより上記梁材他端を押下げて、上記吊具と共に当
該床版を押上げて、その床版アンカー筋を桁から引きち
ぎるか、又は溶断可能なまで床版から引抜くことを特徴
とする床版の撤去方法である。[0007] Furthermore, concrete slabs are divided and cut, and the slabs are peeled off from the girders one by one. Then, when the slabs are to be removed and renewed, a hanging hole for transport is opened in the divided slabs to be peeled. Attach the hangers to one end of the beam, place the fulcrum base near the center of the lower surface of the beam on the adjacent floor slab, and pull the lower end of the tow bar of the center hole jack on the other end of the beam. The outer floor of the adjacent floor slab is engaged with the hanging hole of the adjacent floor slab having a healthy anchor muscle, the other end of the beam is pushed down by the jack, and the floor slab is pushed up together with the hanging tool, A method of removing a floor slab, characterized in that the floor slab anchor bar is torn off from the spar or pulled out of the floor slab until it can be melted.
【0008】あるいはまたコンクリート床版を分割切断
し、これを一枚ずつ桁から引剥がした後、撤去し更新す
る床版改修工事に際し、引剥がすべき分割床版に運搬用
吊り穴を明けて吊具を付け、その吊具を梁材の一端に取
付け、その梁材の下面中央寄りの支点台を隣接床版上に
載せ、上記梁材の他端上面に立てたセンターホールジャ
ッキのけん引棒下端を、上記隣接床版のさらに外側のア
ンカー筋健在の隣接床版の吊り穴に係合させ、上記ジャ
ッキにより上記梁材他端を押下げて、上記吊具と共に当
該床版を押上げて、その床版アンカー筋を桁から引きち
ぎるか、又は溶断可能なまで床版から引抜くことを特徴
とする床版の撤去方法である。Alternatively, the concrete slabs are divided and cut, and the concrete slabs are peeled off one by one from the girders. Then, when the slab is to be removed and renewed, a hanging hole for transport is opened in the divided slab to be peeled. Attach the hangers to one end of the beam, place the fulcrum base near the center of the lower surface of the beam on the adjacent floor slab, and pull the lower end of the tow bar of the center hole jack on the other end of the beam. The outer floor of the adjacent floor slab is engaged with the hanging hole of the adjacent floor slab having a healthy anchor muscle, the other end of the beam is pushed down by the jack, and the floor slab is pushed up together with the hanging tool, A method of removing a floor slab, characterized in that the floor slab anchor bar is torn off from the spar or pulled out of the floor slab until it can be melted.
【0009】この発明の道路橋床版の撤去装置は、コン
クリート床版を分割切断し、これを一枚ずつ桁から引剥
がした後、撤去し更新する床版改修工事に用いられる装
置であって、引剥がすべき分割床版の運搬用吊り穴に通
す吊上用鋼棒、中央寄りに上記鋼棒を垂直貫通させて支
持する梁材、当該床版上に立てて上記梁材の一端を載せ
る支点台、隣接床版上に立てて上記梁材の他端を載せる
油圧ジャッキ、及び上記梁材の両端からそれぞれ左右へ
伸び出たブラケットに付いた車輪、を備えることを特徴
とする床版の撤去装置である。The apparatus for removing a road bridge slab of the present invention is a device used for slab repair work in which concrete slabs are divided and cut, and the slabs are peeled off one by one from a girder and then removed and renewed. A steel rod for lifting that passes through a hanging hole for transportation of the divided floor slab to be peeled off, a beam material that vertically penetrates and supports the steel rod near the center, and puts one end of the beam material standing on the floor slab. A fulcrum base, a hydraulic jack that stands on the adjacent floor slab and mounts the other end of the beam, and wheels attached to brackets extending left and right from both ends of the beam, respectively. It is a removal device.
【0010】また上記梁材の一端から下向きに伸縮可能
に伸び出て、当該床版の上面に載る支点台、上記梁材の
他端から下向きに伸び出て隣接床版の上面を押す油圧ジ
ャッキ、及び上記梁材の両端からそれぞれ左右へ伸び出
たブラケットに付いた車輪、を備えることを特徴とする
床版の撤去装置である。[0010] A fulcrum that extends downward from one end of the beam so as to be extendable and contractable and rests on the upper surface of the floor slab, and a hydraulic jack that extends downward from the other end of the beam and pushes the upper surface of an adjacent floor slab. And a wheel attached to a bracket extending right and left from both ends of the beam material.
【0011】さらにまたコンクリート床版を分割切断
し、これを一枚ずつ桁から引剥がした後、撤去し更新す
る道路橋改修工事に用いる装置であって、引剥がすべき
分割床版の2個以上の運搬用吊り穴に鋼棒を通して取付
ける吊具、その一端に上記吊具を軸支した梁材、上記梁
材の下面中央寄りに軸支され、隣接床版上の当該床版寄
りに載せられる支点台、及び上記梁材の他端上面に立
ち、そのけん引棒下端を上記隣接床版のさらに外側のア
ンカー筋健在の隣接床版の吊り穴に係合させるセンター
ホールジャッキ、を備えることを特徴とする床版の撤去
装置である。Furthermore, the present invention is a device used for road bridge repair work in which concrete slabs are divided and cut, and each of the slabs is peeled off from the girders one by one and then removed and renewed. A hanging member which is attached to a hanging hole for transportation through a steel rod, a beam member which supports the hanging member at one end thereof, is pivotally supported near the center of the lower surface of the beam member, and is placed on the adjacent floor plate near the floor plate. A fulcrum base, and a center hole jack that stands on the upper surface of the other end of the beam material and engages a lower end of the tow bar with a hanging hole of the adjacent floor slab that has a healthy anchor muscle further outside the adjacent floor slab. This is a floor slab removal device.
【0012】あるいはまた引剥がすべき分割床版に明け
た運搬用吊り穴に鋼棒を通して取付ける床版運搬用吊
具、車体下面の前後方向に伸びた左右梁材の前端に、上
記吊具の取付部を設けたコンクリート床版敷設作業車、
及び上記床版に隣接する床版上の両版境界寄りに載せ
て、上記左右梁材を介して上記作業車前端を押上げる左
右の油圧ジャッキ、を備えることを特徴とする床版の撤
去装置である。[0012] Alternatively, a floor slab carrying tool attached through a steel rod into a carrying hanging hole drilled in a divided slab to be peeled off, and the hanging tool attached to the front ends of left and right beam members extending in the front-rear direction on the lower surface of the vehicle body. Concrete floor slab laying work vehicle with
And a left and right hydraulic jacks for pushing the front end of the work vehicle through the left and right beams, placed on the two slabs on the slab adjacent to the slab, and removing the slab. It is.
【0013】[0013]
【発明の実施の形態】図1は更新すべき床版を分割切断
し、それぞれの分割床版Sに吊り穴1を作った状態を示
す。桁2に溶接された床版アンカー筋3の位置も示して
いる。図2は桁2と分割床版Sとそのアンカー筋3との
関係を示し、図3、4は分割床版Sを5cmほど桁2か
ら浮かし上げた時、溶接部で破断する場合(図3)と、
アンカー筋3が抜け出てくる場合(図4)とがある事を
示す。後者の場合、ガス溶断器その他で抜け出た所を切
り離すが、その割合は少ない。FIG. 1 shows a state in which a slab to be updated is divided and cut, and hanging holes 1 are formed in each of the divided slabs. The position of the floor anchor bar 3 welded to the spar 2 is also shown. FIG. 2 shows the relationship between the spar 2, the split slab S, and the anchor bar 3, and FIGS. 3 and 4 show the case where the split slab S is lifted off the spar 2 by about 5 cm and is broken at the weld (FIG. 3). )When,
This indicates that the anchor 3 may come out (FIG. 4). In the latter case, the location where the gas escaped with a gas blower or the like is cut off, but the ratio is small.
【0014】さて前述の従来技術とこの発明とを比較す
ると、前者は分割床版の上にまたがって撤去桁(梁材)
を渡し掛けるのに対し、本発明は分割床版の片側に渡し
掛けるだけで目的を達した。図5、6はこの発明の最も
簡素な実施形態の一例を示す。浮かし上げる分割床版を
S、すでに浮かし上げ、引剥がしを終えて元通り沈めた
か、又は未だ済んでいない隣接床版をS´としている。A comparison between the above-mentioned prior art and the present invention shows that the former is a removal girder (beam material) that straddles the divided floor slab.
In contrast, the present invention has achieved the object only by passing over one side of the split floor slab. 5 and 6 show an example of the simplest embodiment of the present invention. The divided floor slab to be lifted is denoted by S, and the adjacent floor slab that has already been lifted and has been peeled off and has been lowered or has not yet been lifted is denoted by S ′.
【0015】この発明の装置は分割床版Sの片側の吊り
穴1に通した吊上用鋼棒4、その鋼棒4を垂直に貫通さ
せて支持する梁材5、当該床版S上に立てた支点台6、
隣接床版S´上に立って梁材5の他端を押上げる油圧ジ
ャッキ7、そして図7にだけ示すが、梁材5の両端部か
ら左右へ張り出した垂直ブラケット8それぞれの下に付
けた梁材移動用車輪9等である。図5、6では、この発
明の装置が床版Sの両側に対称的に使われているのでよ
く分るが、従来技術では床版Sをまたぐため大きく重い
撤去桁であったが、軽小な梁材5に変っている。寸法が
短いだけでなく、曲げ強度(断面係数)からも軽量化し
得た。The apparatus of the present invention comprises a lifting steel rod 4 passed through a hanging hole 1 on one side of a divided floor slab S, a beam 5 for vertically penetrating and supporting the steel rod 4, and The fulcrum stand 6
A hydraulic jack 7 that stands on the adjacent floor slab S 'and pushes up the other end of the beam 5, and is attached below each of the vertical brackets 8, which are shown only in FIG. The beam 9 is a beam moving wheel. 5 and 6, the device of the present invention is used symmetrically on both sides of the floor slab S, which is well understood. It has changed to a simple beam material 5. Not only the dimensions were short, but also the weight could be reduced in terms of bending strength (section modulus).
【0016】図5、6に示すように、隣接床版S´、S
´上の2つの油圧ジャッキ7、7を上向きに伸長し、床
版Sの両側で同時に鋼棒4、4を引上げるので、床版S
が水平に浮上がる。しかし現場の状況によっては片側ず
つ浮かしてもよい。5cmほど浮かすだけである。図
5、6のように梁材5と支点台6、ジャッキ7を分離し
やすくすれば、図7の車輪9を付けなくても作業員2人
で容易に移動し得る。しかし準備作業をより簡単にする
には図8、9の実施形態がよい。図8の梁材5はその一
端から下向きに、ハンドル6aの操作で伸縮して床版S
に当接する支点台6が付き、他端からも隣接床版S´に
当接する下向きの油圧ジャッキ7が出ている。従ってこ
の梁材5を図7と同様な車輪9により押し動かして所要
位置に着け、その位置の吊り穴1に鋼棒4を通して梁材
5と床版Sとをつないだら、直ちに支点台6を床版S上
に押しつけ、ジャッキ7を下向きに伸長し、隣接床版S
´を圧下して、床版Sを浮かすことが出来る。As shown in FIGS. 5 and 6, adjacent floor slabs S 'and S'
The two hydraulic jacks 7, 7 above are extended upward, and the steel bars 4, 4 are pulled up on both sides of the floor slab S at the same time.
Floats horizontally. However, depending on the situation at the site, they may be floated one by one. Just float about 5cm. If the beam member 5, the fulcrum base 6, and the jack 7 can be easily separated as shown in FIGS. 5 and 6, two workers can easily move without attaching the wheels 9 in FIG. However, in order to make the preparation work easier, the embodiment of FIGS. The beam member 5 shown in FIG. 8 expands and contracts downward from one end thereof by operating the handle 6a.
And a hydraulic jack 7 downwardly coming into contact with the adjacent floor slab S 'from the other end. Therefore, the beam 5 is pushed and moved by a wheel 9 similar to that shown in FIG. 7 to a required position. Pressing on the floor slab S, extending the jack 7 downward,
′ Can be lowered to float the floor slab S.
【0017】図5、6及び図8、9の実施形態の装置は
1セットでは、分割床版Sの片側しか浮かすことが出来
ない。従って従来通り床版Sを全幅一気に浮かすには、
図5、6のように装置2セットを同時操作しなければな
らない。これは床版Sの全幅をまたぐ梁でなく、片側か
ら梁材をさし掛けるだけのこの発明ではやむを得ない事
かと思われた。しかしこの発明の片側からの梁材による
方式でも、一挙に分割床版の全幅を浮かし得ることを示
した実施形態を次に述べる。The apparatus of the embodiment shown in FIGS. 5 and 6 and FIGS. 8 and 9 can float only one side of the divided floor slab S in one set. Therefore, to float the floor slab S all at once as before,
As shown in FIGS. 5 and 6, two sets of devices must be operated simultaneously. This seems to be unavoidable in the present invention in which the beam is not straddled over the entire width of the floor slab S but the beam is leaned from one side. However, an embodiment showing that the entire width of the divided floor slab can be floated at a stroke by using the beam material from one side of the present invention will be described below.
【0018】図10の実施形態は、梁材5の長さを図
5、8の場合の約1mから4mに伸ばし、支点台6をそ
の中央寄りにした。これで梁材5の先端に付けた吊具1
0を分割床版Sの両側吊り穴1にかけて全幅を一挙に吊
上げられる。支点台6は隣接床版S´に載せ、さらに外
側のアンカー筋をまだ破断していない隣接床版S″の吊
り穴1に梁材5の後端のセンターホールジャッキ11の
けん引棒11aを通し係合させ当初は破線で示したよう
に梁材5を水平に保つ。そして、ジャッキ11がけん引
棒11aを引上げると、その反力で図10のように、梁
材5の後端が下がり、吊具10が当該床版Sを約5cm
浮かし、図示しないアンカー筋を破断又は引抜く。てこ
の作用をする梁材5は支点台6から後側が十分長いの
で、当該床版Sのアンカー筋を破断しても、隣接床版
S″のアンカー筋は破断しない。In the embodiment shown in FIG. 10, the length of the beam 5 is increased from about 1 m in FIGS. 5 and 8 to 4 m, and the fulcrum 6 is located near the center. The hanging tool 1 attached to the tip of the beam 5
The entire width can be lifted at once by putting 0 on both side hanging holes 1 of the divided floor slab S. The fulcrum table 6 is placed on the adjacent floor slab S ', and the tow bar 11a of the center hole jack 11 at the rear end of the beam 5 is passed through the suspension hole 1 of the adjacent floor slab S "in which the outer anchor is not broken yet. At first, the beam 5 is kept horizontal as shown by the broken line, and when the jack 11 pulls up the tow bar 11a, the rear end of the beam 5 is lowered by the reaction force as shown in FIG. , The hanging tool 10 holds the floor slab S by about 5 cm.
Float and break or pull out anchor bars (not shown). Since the beam 5 acting on the lever 5 is sufficiently long on the rear side from the fulcrum 6, even if the anchor bar of the floor slab S is broken, the anchor bar of the adjacent floor slab S ″ is not broken.
【0019】図10の梁材5は図5、8のそれに比べて
長大であるから、現場ではフォークリフト等の運搬車で
移動させるが、出来れば自走する梁材5が望ましい。そ
れを実現したのが図11、12の実施形態である。図1
1、12の大きな装置は本来、他目的のために使用する
コンクリート床版敷設作業車12である。この作業車1
2が敷設対象とするコンクリート床版は、この発明の分
割床版に似ている。しかしこの作業車12は単なる運搬
用で、そのチエンブロック13はコンクリート床版を上
げ下ろしする強さしかなく、床版アンカー筋の破断は行
えない。Since the beam 5 shown in FIG. 10 is longer than those shown in FIGS. 5 and 8, it is moved by a transport vehicle such as a forklift at the site, but the self-propelled beam 5 is preferable if possible. The embodiment of FIGS. 11 and 12 realizes this. FIG.
The large devices 1 and 12 are the concrete slab laying vehicles 12 originally used for other purposes. This work vehicle 1
The concrete slab to be laid 2 is similar to the split slab of the present invention. However, this work vehicle 12 is merely for transportation, and its chain block 13 has only the strength to raise and lower the concrete slab, and the slab anchor bar cannot be broken.
【0020】そこで作業車12の車体下面の前後方向に
伸びた左右梁材を少し前方へ延長して、その先端に吊具
10を付けるようにして、この発明の梁材5とした。吊
具10に係合した当該床版Sを図11のように5cm程
度浮かすため、隣接床版S´上の両版境界寄りに油圧ジ
ャッキ7を2台載せ、このジャッキ7が作業車12の前
輪14を常時浮かすようにした。図の例では後輪15の
前にも2台のジャッキ7を設けて、四個のジャッキ7に
より作業車12全体を浮かし支えるようにしている。床
版Sを浮かす際は前側の2台のジャッキ7を上向きに伸
長し梁材5の前端をさらに5cm程度上げればよい。こ
の作業車12によれば当該床版S一枚を一挙に浮かし、
すべてのアンカー筋を破断することが出来る。Therefore, the left and right beam members extending in the front-rear direction on the lower surface of the vehicle body of the work vehicle 12 are extended slightly forward, and the hanging members 10 are attached to the front ends thereof to obtain the beam member 5 of the present invention. In order to float the floor slab S engaged with the hanging tool 10 by about 5 cm as shown in FIG. 11, two hydraulic jacks 7 are placed near the boundary between both slabs on the adjacent floor slab S ′. The front wheel 14 was always floated. In the example shown in the figure, two jacks 7 are also provided in front of the rear wheel 15 so that the entire work vehicle 12 is floated and supported by the four jacks 7. When the floor slab S is floated, the two jacks 7 on the front side may be extended upward to further raise the front end of the beam 5 by about 5 cm. According to this work vehicle 12, one floor slab S is floated at a stroke,
All anchor streaks can be broken.
【0021】以上、各実施形態一例ずつについて説明し
たが、この発明の各実施形態それぞれの要旨を変えるこ
となく、実施条件に応じて多様に変化、応用し得ること
言うまでもない。梁材の形、支点台の形、油圧ジャッ
キ、センターホールジャッキの型式、移動用車輪の有
無、コンクリート床版敷設作業車の類似車輛による代替
等、設計者、現場技術者の応用範囲は広い。Although the embodiments have been described one by one, it is needless to say that various changes and applications can be made according to the implementation conditions without changing the gist of each embodiment of the present invention. There are a wide range of applications for designers and field engineers, such as beam shapes, fulcrum shapes, hydraulic jacks, types of center hole jacks, the presence or absence of moving wheels, and the replacement of concrete floor laying work vehicles with similar vehicles.
【0022】[0022]
【発明の効果】従来、床版の撤去のため、分割した床版
を隣接床版より少し浮かして橋桁から引剥がすには、当
該床版をまたいで両端を隣接床版上に支えた撤去桁(梁
材)に床版引上用ジャッキを載せるか、その撤去桁両端
を隣接床版上のジャッキで押上げて、当該床版を吊上げ
るほか無いと考えられた。当該床版をまたいで両端を隣
接床版上に支える撤去桁が必須条件であった。この常識
を打破り、当該床版をまたぐ長くて重い撤去桁を、当該
床版の片側だけにかかる短くて軽い梁材に替えたのがこ
の発明の基本形態である。またこの思想の応用形態とし
て、片側の隣接床版上から当該床版上へつき出た長い梁
材により、吊具を介して当該床版の全幅を一挙に吊上げ
る方式や、コンクリート床版敷設作業車を少し改造し
て、上記長い梁材が自走する方式も提示した。Conventionally, in order to remove a slab from the bridge girder by floating it slightly above the adjacent slab for removal of the slab, a removal girder having both ends supported on the adjacent slab over the slab is considered. It was considered that there was no other way than to lift the floor slab by placing a jack for lifting the floor slab on the (beam material) or pushing up both ends of the removed girder with jacks on the adjacent floor slab. A removal girder supporting both ends on the adjacent slab across the slab was an essential condition. It is a basic form of the present invention to break this common sense and replace long and heavy removal girders that straddle the floor slab with short and light beams that only extend to one side of the floor slab. In addition, as an application form of this idea, a method of lifting the entire width of the floor slab at once using a long beam material protruding onto the floor slab from the adjacent floor slab on one side, or laying a concrete floor slab. The work vehicle was slightly modified, and a method in which the long beam material self-propelled was also presented.
【図1】床版の要部平面図である。FIG. 1 is a plan view of a main part of a floor slab.
【図2】床版の断面斜視図である。FIG. 2 is a sectional perspective view of a floor slab.
【図3】床版アンカー筋と桁との溶接部破断状況説明図
である。FIG. 3 is an explanatory view of a fracture state of a welded portion between a floor slab anchor bar and a girder.
【図4】アンカー筋が床版から引抜かれた状況説明図で
ある。FIG. 4 is a diagram illustrating a situation where an anchor bar is pulled out of a floor slab.
【図5】この発明の基本的実施形態立面図である。FIG. 5 is an elevational view of a basic embodiment of the present invention.
【図6】図5の分割床版Sが引上げられた状態の立面図
である。FIG. 6 is an elevational view of a state where the divided floor slab S of FIG. 5 is pulled up.
【図7】図5のX−X断面図である。FIG. 7 is a sectional view taken along line XX of FIG. 5;
【図8】他の実施形態の立面図である。FIG. 8 is an elevation view of another embodiment.
【図9】図8の分割床版Sが引上げられた状態の立面図
である。FIG. 9 is an elevational view of a state where the divided floor slab S of FIG. 8 is pulled up.
【図10】別の実施形態の立面図である。FIG. 10 is an elevation view of another embodiment.
【図11】さらに別の実施形態の立面図である。FIG. 11 is an elevation view of yet another embodiment.
【図12】図11の側面図である。FIG. 12 is a side view of FIG. 11;
4 吊上用鋼棒 5 梁材 6 支点台 7 油圧ジャッキ 10 吊具 11 センターホールジャッキ 12 作業車 Reference Signs List 4 steel bar for lifting 5 beam 6 fulcrum 7 hydraulic jack 10 hanging tool 11 center hole jack 12 work vehicle
Claims (8)
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に際し、 引剥がすべき分割床版に運搬用吊り穴を明けて吊上用鋼
棒を通し、その鋼棒の上部を、梁材に係合させ、上記梁
材の一端を載せる支点台を当該床版上に立て、梁材他端
を載せる油圧ジャッキを隣接床版上に立て、上記ジャッ
キにより上記梁材他端と共に当該床版を押上げて、その
床版アンカー筋を桁から引きちぎるか、又は溶断可能な
まで床版から引抜くことを特徴とする床版の撤去方法。[Claim 1] A concrete slab is divided and cut, and the slab is peeled off one by one from a girder. Then, when the slab is to be removed and renewed, a hanging hole for transport is formed in the divided slab to be peeled. The upper steel rod is passed through the upper steel rod, the upper part of the steel rod is engaged with the beam, the fulcrum stand on which one end of the beam is placed is erected on the floor slab, and the hydraulic jack on which the other end of the beam is mounted is placed on the adjacent floor slab. Standing on the floor, the jack is pushed up by the jack together with the other end of the beam material, and the anchor of the floor is torn off from the girders or pulled out from the floor until it can be melted. Removal method.
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に際し、 引剥がすべき分割床版に運搬用吊り穴を明けて吊上用鋼
棒を通し、その鋼棒の上部を、梁材に係合させ、上記梁
材の一端に取付けた上下調節可能な支点台下面を当該床
版上に載せ、梁材他端に取付けた下向き油圧ジャッキを
隣接床版上に当て、上記ジャッキの加圧反力により上記
梁材と共に当該床版を押上げて、その床版アンカー筋を
桁から引きちぎるか、又は溶断可能なまで床版から引抜
くことを特徴とする床版の撤去方法。2. A concrete floor slab is divided and cut, and the concrete slab is peeled off one by one from a girder. Then, at the time of the slab repair work for removing and renewing the slab, a hanging hole for transport is opened in the divided slab to be peeled. The upper steel rod is passed through the upper steel rod, the upper part of the steel rod is engaged with the beam, the lower surface of the fulcrum that can be adjusted up and down attached to one end of the beam is placed on the floor slab, and attached to the other end of the beam. A downward hydraulic jack is placed on the adjacent floor slab, and the floor slab is pushed up together with the beam by the pressure reaction force of the jack, and the floor slab anchor bar is torn off from the girder or until the floor slab can be blown. A method for removing a floor slab, wherein the floor slab is removed from the floor.
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に際し、 引剥がすべき分割床版に運搬用吊り穴を明けて吊具を付
け、その吊具を梁材の一端に取付け、その梁材の下面中
央寄りの支点台を隣接床版上に載せ、上記梁材の他端上
面に立てたセンターホールジャッキのけん引棒下端を、
上記隣接床版のさらに外側のアンカー筋健在の隣接床版
の吊り穴に係合させ、上記ジャッキにより上記梁材他端
を押下げて、上記吊具と共に当該床版を押上げて、その
床版アンカー筋を桁から引きちぎるか、又は溶断可能な
まで床版から引抜くことを特徴とする床版の撤去方法。3. A concrete floor slab is divided and cut, and the concrete slab is peeled off one by one from a girder. Then, in a slab repair work for removing and renewing the concrete slab, a hanging hole for transportation is formed in the divided slab to be peeled. Attach the hangers to one end of the beam, place the fulcrum base near the center of the lower surface of the beam on the adjacent floor slab, and pull the lower end of the tow bar of the center hole jack on the other end of the beam. To
The outer floor of the adjacent floor slab is engaged with the hanging hole of the adjacent floor slab with a healthy anchor muscle, the jack is used to push down the other end of the beam member, and the floor slab is pushed up together with the hanger, and the floor is raised. A method for removing a slab, wherein the slab anchor bar is torn off from the spar or pulled out from the slab until it can be blown.
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に際し、 引剥がすべき分割床版に運搬用吊り穴を明け、吊上用鋼
棒を通して床版運搬用吊具を付け、コンクリート床版敷
設作業車を当該床版中央部に直角に向けて、その車体下
面の前後方向に伸びた左右梁材の前端に上記吊具を取付
け、当該床版に隣接する床版上の両版境界寄りに左右の
油圧ジャッキを載せ、これらジャッキにより上記作業車
の前端と共に当該床版を押上げて、その床版アンカー筋
を桁から引きちぎるか、又は溶断可能なまで床版から引
抜くことを特徴とする床版の撤去方法。4. A concrete slab is divided and cut, and the concrete slab is peeled off one by one from a girder. Then, when the slab is renovated to be removed and renewed, a hanging hole for transport is formed in the divided slab to be peeled off. Attach the hanging slab for transporting the floor slab through the upper steel bar, and turn the concrete slab laying work vehicle at right angles to the center of the floor slab. The left and right hydraulic jacks are placed near the boundary between the two slabs on the slab adjacent to the slab, and the jacks push up the slab together with the front end of the work vehicle, so that the anchor of the slab is separated from the girders. A method for removing a floor slab, wherein the floor slab is withdrawn until it can be torn or blown.
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に用いられる装置であって、 引剥がすべき分割床版の運搬用吊り穴に通す吊上用鋼
棒、中央寄りに上記鋼棒を垂直貫通させて支持する梁
材、当該床版上に立てて上記梁材の一端を載せる支点
台、隣接床版上に立てて上記梁材の他端を載せる油圧ジ
ャッキ、及び上記梁材の両端からそれぞれ左右へ伸び出
たブラケットに付いた車輪、を備えることを特徴とする
床版の撤去装置。5. A device used for renovating a slab in which a concrete slab is divided and cut, and peeled off one by one from a girder, and then removed and renewed, for transporting a divided slab to be peeled. A steel rod for lifting that passes through the hanging hole, a beam member that vertically penetrates and supports the steel bar near the center, a fulcrum stand on which the one end of the beam material stands on the floor slab, and a beam standing on the adjacent floor slab A floor slab removing device comprising: a hydraulic jack on which the other end of the beam is placed; and wheels attached to brackets extending right and left from both ends of the beam.
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に用いられる装置であって、 引き剥がすべき分割床版の運搬用吊り穴に通す吊上用鋼
棒、中央寄りに上記鋼棒を垂直貫通させて支持する梁
材、上記梁材の一端から下向きに伸縮可能に伸び出て、
当該床版の上面に載る支点台、上記梁材の他端から下向
きに伸び出て隣接床版の上面を押す油圧ジャッキ、及び
上記梁材の両端からそれぞれ左右へ伸び出たブラケット
に付いた車輪、を備えることを特徴とする床版の撤去装
置。6. A device used for renovating a slab in which a concrete slab is divided and cut, and the slab is peeled off one by one, and then removed and renewed. A steel rod for lifting that passes through the hanging hole, a beam material that vertically penetrates and supports the steel bar near the center, extends downwardly from one end of the beam material so as to be able to expand and contract,
A fulcrum resting on the upper surface of the floor slab, a hydraulic jack extending downward from the other end of the beam and pressing the upper surface of the adjacent floor slab, and wheels attached to brackets extending left and right from both ends of the beam, respectively. A floor slab removal device, comprising:
一枚ずつ桁から引剥がした後、撤去し更新する道路橋改
修工事に用いる装置であって、 引剥がすべき分割床版の2個以上の運搬用吊り穴に鋼棒
を通して取付ける吊具、その一端に上記吊具を軸支した
梁材、上記梁材の下面中央寄りに軸支され、隣接床版上
の当該床版寄りに載せられる支点台、及び上記梁材の他
端上面に立ち、そのけん引棒下端を上記隣接床版のさら
に外側のアンカー筋健在の隣接床版の吊り穴に係合させ
るセンターホールジャッキ、を備えることを特徴とする
床版の撤去装置。7. A device used for road bridge renovation work in which concrete slabs are divided and cut and peeled off from the girders one by one, and then removed and renewed, wherein at least two of the divided slabs to be peeled off. A hanging member which is attached to a hanging hole for transportation through a steel rod, a beam member which supports the hanging member at one end thereof, is pivotally supported near the center of the lower surface of the beam member, and is placed on the adjacent floor plate near the floor plate. A fulcrum base, and a center hole jack that stands on the upper surface of the other end of the beam material and engages a lower end of the tow bar with a hanging hole of the adjacent floor slab that has a healthy anchor muscle further outside the adjacent floor slab. Removal equipment for floor slabs.
一枚ずつ桁から引剥がした後、撤去し更新する床版改修
工事に用いる装置であって、 引剥がすべき分割床版に明けた運搬用吊り穴に鋼棒を通
して取付ける床版運搬用吊具、車体下面の前後方向に伸
びた左右梁材の前端に、上記吊具の取付部を設けたコン
クリート床版敷設作業車、及び上記床版に隣接する床版
上の両版境界寄りに載せて、上記左右梁材を介して上記
作業車前端を押上げる左右の油圧ジャッキ、を備えるこ
とを特徴とする床版の撤去装置。8. A device used for floor slab renovation work in which concrete slabs are divided and cut and peeled off one by one from a girder, and then removed and renewed. Slab for transporting a floor slab, which is attached through a steel rod to a suspension hole for use, a concrete slab laying work vehicle provided with a mounting portion for the slab at the front end of left and right beam members extending in the front-rear direction on the underside of the vehicle body, and the floor slab A left and right hydraulic jacks, which are placed near the boundary between the two slabs on the slab adjacent to the slab and push up the front end of the work vehicle via the left and right beams.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32244495A JP2712015B2 (en) | 1995-11-17 | 1995-11-17 | Removal method and device for floor slab |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32244495A JP2712015B2 (en) | 1995-11-17 | 1995-11-17 | Removal method and device for floor slab |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09143933A JPH09143933A (en) | 1997-06-03 |
JP2712015B2 true JP2712015B2 (en) | 1998-02-10 |
Family
ID=18143745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32244495A Expired - Fee Related JP2712015B2 (en) | 1995-11-17 | 1995-11-17 | Removal method and device for floor slab |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2712015B2 (en) |
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-
1995
- 1995-11-17 JP JP32244495A patent/JP2712015B2/en not_active Expired - Fee Related
Cited By (2)
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CN107165053A (en) * | 2017-06-13 | 2017-09-15 | 中国冶集团有限公司 | One kind is without beam installation method between the prefabricated support of bracket |
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Also Published As
Publication number | Publication date |
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JPH09143933A (en) | 1997-06-03 |
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