JP2001254315A - Repairing method of shoe seat - Google Patents
Repairing method of shoe seatInfo
- Publication number
- JP2001254315A JP2001254315A JP2000065583A JP2000065583A JP2001254315A JP 2001254315 A JP2001254315 A JP 2001254315A JP 2000065583 A JP2000065583 A JP 2000065583A JP 2000065583 A JP2000065583 A JP 2000065583A JP 2001254315 A JP2001254315 A JP 2001254315A
- Authority
- JP
- Japan
- Prior art keywords
- shoe seat
- girder
- jack
- sides
- wedge
- 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.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、道路用や鉄道用等
の橋桁などの桁を支承する沓座の補修方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a shoe seat for supporting a girder such as a bridge girder for roads or railways.
【０００２】[0002]
【発明が解決しようとする課題】従来、道路用や鉄道用
等の橋桁などの桁を支承する沓座の補修方法に関する。Conventionally, the present invention relates to a method for repairing a shoe seat for supporting a girder such as a bridge girder for roads or railroads.
【０００３】従来、橋梁などの沓座の補修工事において
は、例えば特公昭５７−４７３２４号公報にあるよう
に、仮設工や足場を組み、桁を油圧ジャッキなどにより
所定高さまで上げ、前記仮設工により桁を仮受けした状
態で補修が行われており、劣化損傷した沓座コンクリー
トをピック等ではつり、コンクリートや接着剤などを用
いて補修を行うことが知られている。[0003] Conventionally, in repair work of a shoe seat such as a bridge, for example, as disclosed in Japanese Patent Publication No. 57-47324, a temporary work or a scaffold is assembled, and a girder is raised to a predetermined height by a hydraulic jack or the like. It is known that repairs are performed while the girder is temporarily received, and the deteriorated and damaged shoe seat concrete is hung with a pick or the like and repaired using concrete or an adhesive.
【０００４】しかしながら、上記のような補修方法で
は、桁を仮受けするために仮設工が必要となり、そのた
めの費用がかかる問題があった。また、川の途中に設け
られた橋脚や、比較的高い橋脚では、仮設工を設けるこ
とが困難であったり、仮設工を設けることができたとし
ても費用が増大するという問題がある。[0004] However, in the above-mentioned repair method, a temporary work is required to temporarily receive the girder, so that there is a problem that the cost is increased. In addition, there is a problem that it is difficult to provide a temporary pier on a pier provided in the middle of a river or a relatively high pier, or even if a temporary pier can be provided, the cost increases.
【０００５】そこで、本発明は、仮設工や足場が不要
で、施工性に優れた沓座の補修方法を提供することを目
的とする。Accordingly, an object of the present invention is to provide a method of repairing a shoe seat which does not require a temporary work or a scaffold and has excellent workability.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、台座
の上に沓座を設け、この沓座に桁を載置した沓座の補修
方法において、前記台座と前記桁の下面との間に、該台
座に下支持面を載置すると共に前記桁下面に接する上昇
降面を有するジャッキを配置し、前記上昇降面の上昇に
より既設の沓座と桁下面との間に隙間を形成した状態
で、既設の沓座を撤去し、新しい沓座と交換するもので
ある。According to a first aspect of the present invention, there is provided a method of repairing a shoe seat in which a shoe seat is provided on a pedestal and a girder is mounted on the shoe seat. In between, a lower support surface is placed on the pedestal and a jack having a rising and falling surface in contact with the lower surface of the girder is arranged, and a clearance is formed between the existing shoe seat and the lower surface of the girder by raising the rising and lowering surface. In this state, the existing shoe seat is removed and replaced with a new one.
【０００７】この請求項１の構成によれば、台座と桁の
下面との間にジャッキを配置して桁を上げるため、仮設
工や足場が不要となり、工期の短縮と工費の削減が可能
となる。According to the first aspect of the present invention, the jack is arranged between the pedestal and the lower surface of the girder to raise the girder, so that temporary work and scaffolding are not required, and it is possible to shorten the construction period and reduce the construction cost. Become.
【０００８】また、請求項２の発明は、前記下支持面を
前記桁の下方に配置すると共に、前記沓座の両側にジャ
ッキを配置するものである。According to a second aspect of the present invention, the lower support surface is disposed below the girder, and jacks are disposed on both sides of the shoe seat.
【０００９】この請求項２の構成によれば、支持下面を
桁の下方に配置するから、台座が桁の下方に隠れていて
も、仮設工や足場なしにジャッキをセットすることがで
き、沓座の両側において桁を安定的に支持することがで
きる。According to the second aspect of the present invention, since the supporting lower surface is arranged below the girder, even if the pedestal is hidden below the girder, the jack can be set without any temporary work or scaffolding. The beam can be stably supported on both sides of the seat.
【００１０】また、請求項３の発明は、前記ジャッキ
は、内面を対向して設けられ両側が外面に向かって肉薄
になる一対の昇降体と、これら昇降体の両側に配置され
前記昇降体の内面間に先端が挿入される一対の楔体と、
これら楔体を前記内面側に進退する進退手段とを備える
ものである。According to a third aspect of the present invention, the jack comprises a pair of elevating members provided with their inner surfaces opposed to each other and having both sides thinner toward the outer surface; A pair of wedges, the tips of which are inserted between the inner surfaces,
Reciprocating means for reciprocating these wedges toward the inner surface side.
【００１１】この請求項３の構成によれば、内面を対向
して設けられ両側が外面に向かって肉薄になる一対の昇
降体と、これら昇降体の両側に配置され前記昇降体の内
面間に先端が挿入される一対の楔体と、これら楔体を前
記内面側に進退する進退手段とを備えたものであり、進
退手段により両側の楔体を内面側に進退すると、楔体が
昇降体の内面間に挿入され、対をなす昇降体の間隔が開
き、桁が上昇する。According to the structure of the third aspect, a pair of elevating members provided with the inner surfaces opposed to each other and having both sides thinner toward the outer surface, and between the inner surfaces of the elevating members disposed on both sides of the elevating members A pair of wedges into which the tips are inserted, and advancing and retreating means for moving the wedges toward and away from the inner surface. The space between the pair of elevating bodies is increased and the girder rises.
【００１２】[0012]
【発明の実施形態】以下、本発明の実施例を添付図面を
参照して説明する。図１乃至図１１は本発明の第１実施
例を示し、図７などに示すように、橋梁１は橋脚２，２
間に桁３を配置し、前記橋脚２の台座である上面４に沓
座５を設け、この沓座５により前記桁３を支承してい
る。このような橋梁１などにおいて、既設の沓座５を補
修するには、図１及び図２に示すように、前記上面４と
桁３の下面６との間にジャッキ21を配置する。この場
合、既設の沓座５を両側から挟むようにして複数のジャ
ッキ21，21を配置する。ジャッキ21は前記上面４に載置
する下支持面７と前記桁３の下面６に接する上昇降面８
を有し、上昇降面８と下昇降面７との間が開き、その上
昇降面８が上昇する。そして、図１及び図２に示すよう
に、沓座５は桁３の下面６の下部に隠れ、また、橋脚２
の上面４が桁３の下面６の下部に隠れており、前記上面
４には桁３の外側に張り出す部分がない。Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 11 show a first embodiment of the present invention. As shown in FIG.
A girder 3 is disposed therebetween, and a shoe seat 5 is provided on an upper surface 4 which is a pedestal of the pier 2, and the shoe girder 3 is supported by the shoe seat 5. In order to repair the existing shoe seat 5 in such a bridge 1 or the like, a jack 21 is disposed between the upper surface 4 and the lower surface 6 of the girder 3 as shown in FIGS. In this case, the plurality of jacks 21 are arranged so as to sandwich the existing shoe seat 5 from both sides. The jack 21 has a lower supporting surface 7 mounted on the upper surface 4 and a rising and lowering surface 8 in contact with the lower surface 6 of the girder 3.
The opening between the ascending / descending surface 8 and the lower ascending / descending surface 7 opens, and the ascending / descending surface 8 ascends. As shown in FIGS. 1 and 2, the shoe seat 5 is hidden under the lower surface 6 of the girder 3, and the pier 2
The upper surface 4 is hidden under the lower surface 6 of the spar 3, and the upper surface 4 has no portion protruding outside the spar 3.
【００１３】まず、ジャッキ21を操作して上昇降面８を
上昇せしめ、図３に示すように、上昇位置で桁３を支持
する。次に、既設の沓座５を健全なコンクリート部分ま
ではつり、全体除去又は劣化損傷部分を除去し、図４に
示すように、新設の沓座５Ａを形成する型枠９を組み、
該型枠９内に無収縮コンクリート10を充填する。この無
収縮コンクリート10は前記型枠９に接続したホース11に
より該型枠９内に充填することができる。また、図５に
示すように、ジャッキ21により桁３を下げる前に、無収
縮コンクリート10の上にゴム板などの弾性板12を配置す
る。そして、無収縮コンクリート10を養生し、硬化した
ら、ジャッキ21の上昇降面８を降下し、図６に示すよう
に、新設の可動沓座５Ａにより桁３を支持し、上面４と
下面６との間からジャッキ21を引き抜く。First, the jack 21 is operated to raise the ascending / descending surface 8, and as shown in FIG. 3, the beam 3 is supported at the ascending position. Next, the existing shoe seat 5 is suspended to a healthy concrete portion, and the entire shoe is removed or the damaged portion is removed. As shown in FIG. 4, a formwork 9 for forming a new shoe seat 5A is assembled.
The formwork 9 is filled with non-shrinkage concrete 10. The non-shrinkable concrete 10 can be filled in the form 9 by a hose 11 connected to the form 9. Further, as shown in FIG. 5, before lowering the girder 3 by the jack 21, the elastic plate 12 such as a rubber plate is placed on the non-shrinkable concrete 10. When the non-shrink concrete 10 is cured and hardened, the jack 21 is lowered on the rising and falling surface 8 to support the girder 3 by the newly-installed movable shoe seat 5A as shown in FIG. Pull out jack 21 from between.
【００１４】図８ないし図１１は、上記の補修方法に使
用するジャッキ21の一例を示し、図８に示すように、ジ
ャッキ21は、略平板状の昇降体22，22と、これら昇降体
22，22の両側に配置される略平板状の楔体23，23Ａとを
備え、前記昇降体22は前記楔体23，23Ａのほぼ２分の１
の厚さを有し、一例として前記楔体23，23Ａは略２０〜
３０ミリ前後の厚さを有する。前記昇降体22，22はその
内24，24を対向して設けられ、前記楔体23，23Ａは相互
に別体のものである。また、前記昇降体22の上面25は平
面ほぼ正方形をなす。前記昇降体22の両側には、該昇降
体22の外面24に向かって薄肉となるように傾斜状の受面
26，26がそれぞれ形成されている。前記楔体23の先端に
は、略Ｖ字形の楔部27が設けられており、この楔部27に
前記受面26は対応した形状をなし、上下に傾斜面を有し
ている。そして、前記受面26は昇降体22の左右幅方向全
長に設けられ、また、楔部27も楔体23，23Ａの幅方向全
長に設けられ、前記昇降体22と楔体23，23Ａとはほぼ左
右同一幅であり、前記受面26に楔部27が摺動する。両側
の前記楔体23，23Ａは前記昇降体22の内面24側に向かっ
て進退するものであり、該楔体23，23Ａには、その進退
方向の孔28，28が左右に穿設され、これら孔28，28は楔
体23，23Ａの厚さ方向中央に形成されている。また、前
記孔28に対応して、前記昇降体22の内面24には、溝29，
29がそれぞれ形成されている。前記孔28，溝29，29及び
孔28に移動杆31が移動可能に配置され、この移動杆31の
先端に連結部材たるナット32を螺着して該先端を他方の
楔体23Ａに連結し、また、一方の楔体23の孔28から外部
に突出した移動杆31の基端31Ｋは、進退手段たる油圧シ
リンダ33の後端に固定している。前記油圧シリンダ33は
前記移動杆31の長さ方向に沿って配置され、該油圧シリ
ンダ33の後部左右に、左右の移動杆31，31の基端31Ｋ，
31Ｋがそれぞれ固定されている。また、前記油圧シリン
ダ33の伸縮ロッド34は、前記一方の楔体23に固定されて
いる。さらに、油圧シリンダ33には、可撓性のパイプ35
を介してプランジャーポンプなどを備えた油圧操作部36
が連結され、この油圧操作部36の操作により前記伸縮ロ
ッド33が進退する。そして、前記移動杆31と前記油圧シ
リンダ33により、移動杆進退手段37を構成している。
尚、使用時に下にした昇降体22の外面25が前記下支持面
７であり、使用時に上にした昇降体２の外面が前記上昇
面８となる。FIGS. 8 to 11 show an example of a jack 21 used in the above-mentioned repairing method. As shown in FIG. 8, the jack 21 is composed of elevating members 22,
And wedge bodies 23, 23A of substantially flat plate shape disposed on both sides of the wedge bodies 22, 22A.
As an example, the wedge members 23 and 23A have a thickness of approximately 20 to
It has a thickness of around 30 mm. The elevating bodies 22, 22 are provided with their 24, 24 facing each other, and the wedge bodies 23, 23A are separate from each other. The upper surface 25 of the elevating body 22 has a substantially square planar shape. On both sides of the elevating body 22, receiving surfaces inclined so as to become thinner toward the outer surface 24 of the elevating body 22
26 and 26 are formed respectively. At the tip of the wedge body 23, a substantially V-shaped wedge portion 27 is provided, and the receiving surface 26 has a shape corresponding to the wedge portion 27, and has a vertically inclined surface. The receiving surface 26 is provided on the entire length of the elevating body 22 in the left-right width direction, and the wedge portion 27 is also provided on the entire length of the wedge bodies 23 and 23A in the width direction. The left and right sides have substantially the same width, and the wedge portion 27 slides on the receiving surface 26. The wedges 23, 23A on both sides advance and retreat toward the inner surface 24 side of the elevating body 22, and the wedges 23, 23A are provided with holes 28, 28 in the advance and retreat directions on the left and right, These holes 28, 28 are formed at the center in the thickness direction of the wedge bodies 23, 23A. Also, corresponding to the hole 28, a groove 29,
29 are formed respectively. A moving rod 31 is movably disposed in the hole 28, the grooves 29, 29 and the hole 28, and a nut 32 serving as a connecting member is screwed to a tip of the moving rod 31 to connect the tip to the other wedge 23A. In addition, a base end 31K of the movable rod 31 protruding outside from the hole 28 of the one wedge body 23 is fixed to a rear end of a hydraulic cylinder 33 serving as a reciprocating means. The hydraulic cylinder 33 is disposed along the length direction of the moving rod 31, and at the rear left and right of the hydraulic cylinder 33, the base ends 31K of the left and right moving rods 31, 31 are located.
31K are respectively fixed. The telescopic rod 34 of the hydraulic cylinder 33 is fixed to the one wedge 23. Further, the hydraulic cylinder 33 includes a flexible pipe 35.
Hydraulic operation unit 36 with plunger pump etc.
The telescopic rod 33 is moved forward and backward by the operation of the hydraulic operating section 36. The moving rod 31 and the hydraulic cylinder 33 constitute a moving rod advance / retreat means 37.
The outer surface 25 of the lifting body 22 lowered during use is the lower support surface 7, and the outer surface of the lifting body 2 raised during use is the rising surface 8.
【００１５】また、前記昇降体22の左右には、係止部3
8，38が設けられ、図１０に示すように、一対の昇降体2
2，22の係止部38，38，38，38に交叉するように弾性仮
連結部材39，39…を掛装し、この例では、弾性仮連結部
材39には輪ゴムを用いている。[0015] A locking portion 3 is provided on the left and right sides of the elevating body 22.
8 and 38 are provided, and as shown in FIG.
The elastic temporary connecting members 39, 39,... Are mounted so as to cross the locking portions 38, 38, 38, 38 of 2, 22, respectively. In this example, rubber bands are used for the elastic temporary connecting members 39.
【００１６】そして、油圧シリンダ33を駆動して伸縮ロ
ッド34を伸長すると、両側の楔体23，23Ａが接近し、楔
部27がそれぞれの受面26，26に摺動して挿入され、昇降
体22，22の間隔が開き、また、縮めると間隔が狭まる。
したがって、楔体23，23が挿入可能な高さＴがあれば、
使用することができる。また、昇降体22の外面25を接地
するスペースがあれば済む。さらに、この例では、楔体
23，23Ａが両側から昇降体22，22間に均等に食い込んで
行くため、垂直方向へ持ち上げる力が得られ、また、各
外面25，25が固定面である上面４と作用面たる下面６に
面接触状態で昇降がなされる。When the hydraulic cylinder 33 is driven to extend the telescopic rod 34, the wedge members 23, 23A on both sides approach each other, and the wedge portions 27 are slid into the respective receiving surfaces 26, 26, and are moved up and down. The space between the bodies 22, 22 is widened, and the space is narrowed when the body is shrunk.
Therefore, if there is a height T at which the wedge bodies 23, 23 can be inserted,
Can be used. Further, it is sufficient if there is a space for grounding the outer surface 25 of the elevating body 22. Further, in this example, the wedge
Since 23 and 23A penetrate equally between the lifting bodies 22 and 22 from both sides, a lifting force in the vertical direction is obtained, and the outer surfaces 25 and 25 are fixed to the upper surface 4 which is the fixed surface and the lower surface 6 which is the working surface. Elevation is performed in a surface contact state.
【００１７】また、図１１は固定面24と昇降される部材
の作用面25とが平行でない場合のジャッキ装置１の作用
を説明するものである。図９の状態からジャッキ21を駆
動し、楔体23，23Ａを進退すると、図１１（Ａ）の状態
まで昇降体22，22が平行に開き、間隔の狭い側の上側の
昇降体22の他側40が下面６に当接する。すると、間隔の
狭い側の楔体23Ａは昇降体22，22を介して上下から規制
されるため、移動を停止し、伸縮ロッド34の伸長分だけ
広い側の楔体23が内面24側に食い込み、図１１（Ｂ）に
示すように、上側の昇降体22の上面25が下面６に面接触
し、この後両側の楔体23，23がほぼ均等に挿入され、上
面25が上昇する。FIG. 11 illustrates the operation of the jack device 1 when the fixing surface 24 and the operating surface 25 of the member to be raised and lowered are not parallel. When the jack 21 is driven from the state of FIG. 9 to advance and retreat the wedge bodies 23, 23A, the elevating bodies 22, 22 are opened in parallel to the state of FIG. The side 40 abuts the lower surface 6. Then, since the wedge 23A on the narrower side is regulated from above and below via the elevating bodies 22, 22, it stops moving, and the wedge 23 on the side wider by the extension of the telescopic rod 34 bites into the inner surface 24 side. As shown in FIG. 11 (B), the upper surface 25 of the upper elevating body 22 comes into surface contact with the lower surface 6, and thereafter the wedge bodies 23 on both sides are inserted almost uniformly, and the upper surface 25 rises.
【００１８】このように上面４と下面６との例えば５０
mm程度の高さＴ間隔の隙間にジャッキ21を挿入し、この
ジャッキ21により桁３を僅かに上げ、例えば１０mm程度
上げた状態で支持し、既設の沓座５をはつり、型枠９内
に無収縮コンクリート10を充填し、弾性板12と取付け、
コンクリート10の養生後にジャッキ21を下げることによ
り補修を行うことができる。As described above, for example, 50
A jack 21 is inserted into a gap having a height T interval of about mm, and the girder 3 is slightly raised by the jack 21, for example, supported by being raised by about 10 mm. Fill non-shrink concrete 10, attach with elastic plate 12,
The repair can be performed by lowering the jack 21 after the concrete 10 is cured.
【００１９】このように本実施例では、請求項１に対応
して、台座の上である橋脚２の上面４に沓座５を設け、
この沓座５に桁３を載置した沓座５の補修方法におい
て、橋脚２の上面４と桁３の下面６との間に、橋脚２に
下支持面７を載置すると共に桁３の下面６に接する上昇
降面８を有するジャッキ21を配置し、上昇降面８の上昇
により既設の沓座５と桁３の下面６との間に隙間Ｓを形
成した状態で、既設の沓座５を撤去し、新しい沓座５Ａ
と交換する方法であるから、橋脚２と桁３の下面６との
間にジャッキ21を配置して桁３を上げるため、仮設工や
足場が不要となり、工期の短縮と工費の削減が可能とな
る。As described above, in the present embodiment, the shoe seat 5 is provided on the upper surface 4 of the pier 2 on the base,
In the repair method of the shoe seat 5 in which the beam 3 is placed on the shoe seat 5, the lower support surface 7 is placed on the pier 2 between the upper surface 4 of the pier 2 and the lower surface 6 of the beam 3, and A jack 21 having an ascending / descending surface 8 in contact with the lower surface 6 is arranged, and the ascending / descending surface 8 forms a gap S between the existing shoe seat 5 and the lower surface 6 of the girder 3. 5 was removed and a new Kutsuza 5A
Because the jack 21 is placed between the pier 2 and the lower surface 6 of the girder 3 and the girder 3 is raised, temporary construction work and scaffolding are not required, and it is possible to shorten the construction period and reduce the construction cost. Become.
【００２０】また、このように本実施例では、請求項２
に対応して、下支持面７を桁３の下方に配置すると共
に、沓座５の両側にジャッキ21，21を配置するから、橋
脚２の上面４が桁３の下方に隠れていても、仮設工や足
場なしにジャッキ21をセットすることができ、また、沓
座５の両側において桁３を安定的に支持することができ
る。Further, as described above, in this embodiment, claim 2
Accordingly, the lower support surface 7 is arranged below the girder 3 and the jacks 21, 21 are arranged on both sides of the shoe seat 5, so that even if the upper surface 4 of the pier 2 is hidden below the girder 3, The jack 21 can be set without any temporary work or scaffolding, and the beam 3 can be stably supported on both sides of the shoe seat 5.
【００２１】また、このように本実施例では、請求項３
に対応して、内面24，24を対向して設けられ両側が外面
25，25に向かって肉薄になる一対の昇降体22，22と、こ
れら昇降体22，22の両側に配置され昇降体22，22の内面
24，24間に先端が挿入される一対の楔体23，23Ａと、こ
れら楔体23，23Ａを内面24，24側に進退する進退手段た
る油圧シリンダ33とを備えたものであるから、油圧シリ
ンダ33により両側の楔体23，23Ａを内面24，24側に進退
すると、楔体23，23Ａが昇降体22，22の内面24，24間に
挿入され、対をなす昇降体22，22の間隔が開き、重量物
の高さ調整を行うことができる。そして、４０〜６０ミ
リ程度の高さＴで施工が可能で、両側から楔体23，23Ａ
が食い込むから、昇降体22，22を均等な力で昇降するこ
とができ、安定性にも優れる。また、橋脚２の上面４は
昇降体22の上面25に対応するスペースがあれば済む。さ
らに、構造が比較的簡易となり、耐久性に優れたものと
なる。さらに、上面25，25が橋脚２の上面４及び桁３の
下面６に面接触するから、昇降する部材を損傷すること
もない。As described above, according to the present embodiment, claim 3
Corresponding to the inner surface 24, 24 are provided facing each other, both sides are outer surfaces
A pair of elevating bodies 22, 22 that become thinner toward 25, 25, and the inner surfaces of the elevating bodies 22, 22, which are arranged on both sides of these elevating bodies 22, 22
Since it is provided with a pair of wedge bodies 23 and 23A whose tips are inserted between the 24 and 24, and a hydraulic cylinder 33 as a reciprocating means for moving the wedge bodies 23 and 23A toward the inner surfaces 24 and 24, the hydraulic pressure is increased. When the wedge members 23, 23A on both sides are advanced and retracted toward the inner surfaces 24, 24 by the cylinder 33, the wedge members 23, 23A are inserted between the inner surfaces 24, 24 of the elevating members 22, 22, to form a pair of elevating members 22, 22. The interval is widened, and the height of the heavy object can be adjusted. It can be installed at a height T of about 40 to 60 mm, and the wedge members 23, 23A are provided from both sides.
As a result, the lifting bodies 22, 22 can be raised and lowered with uniform force, and the stability is also excellent. Further, the upper surface 4 of the pier 2 only needs to have a space corresponding to the upper surface 25 of the elevating body 22. Further, the structure is relatively simple, and the durability is excellent. Further, since the upper surfaces 25, 25 are in surface contact with the upper surface 4 of the pier 2 and the lower surface 6 of the girder 3, there is no damage to the members that move up and down.
【００２２】図１２は本発明の第２実施例を示し、上記
第１実施例と同一部分に同一符号を付し、その詳細な説
明を省略して詳述すると、この例では、沓座５の両側に
配置したジャッキ21，21を油圧操作部36に接続し、この
油圧操作部36を制御する制御装置51を設けている。ま
た、ジャッキ21の上昇降面８には、ゴム板などの弾性板
52を貼設している。そして、制御装置51により、複数の
ジャッキ21，21の上昇降面８，８を均等に昇降すること
ができる。また、ジャッキ21により桁３を仮支持中、ジ
ャッキ21と桁３の下面６との間に弾性板52が介在するか
ら、そのジャッキ21が補修工事中、可動沓となり、桁３
を良好に支持することができる。FIG. 12 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Are connected to a hydraulic operating section 36, and a control device 51 for controlling the hydraulic operating section 36 is provided. An elastic plate such as a rubber plate is provided on the rising / falling surface 8 of the jack 21.
52 is attached. Then, the control device 51 allows the ascending and descending surfaces 8, 8 of the plurality of jacks 21, 21 to be evenly moved up and down. Also, while the girder 3 is temporarily supported by the jack 21, the elastic plate 52 is interposed between the jack 21 and the lower surface 6 of the girder 3.
Can be favorably supported.
【００２３】図１３は本発明の第３実施例を示し、上記
各実施例と同一部分に同一符号を付し、その詳細な説明
を省略して詳述すると、この例では、落石保護構造物で
あるアーチ型シェルター61に本発明を適用例であり、該
シェルター61はアーチ型をなす桁たるプレキャストコン
クリートアーチ版62を道路の長さ方向に複数連結し、そ
の両側を側部コンクリート63により支持し、この側部コ
ンクリート63の上面４に前記沓座５を設けている。そし
て、アーチ版62の下面６と側部コンクリート63の上面４
との間にジャッキ21を挿入し、沓座５を両側から挟むよ
うにしてジャッキ21，21を配置し、図２〜６に示したと
同様に可動側の沓座を新しい沓座５Ａに補修することが
でき、このようにアーチ状の桁にも適用可能である。FIG. 13 shows a third embodiment of the present invention. The same parts as those in the above embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted. This is an application example of the present invention to an arched shelter 61, which is an arched shelter 61 that connects a plurality of arched precast concrete arch slabs 62 in the longitudinal direction of the road, and supports both sides thereof with side concrete 63. The shoe seat 5 is provided on the upper surface 4 of the side concrete 63. Then, the lower surface 6 of the arch plate 62 and the upper surface 4 of the side concrete 63
And the jacks 21, 21 are arranged so as to sandwich the shoe seat 5 from both sides, and the movable shoe seat can be repaired with a new shoe seat 5A as shown in FIGS. It can be applied to an arch-shaped spar.
【００２４】図１４は本発明の第４実施例を示し、上記
各実施例と同一部分に同一符号を付し、その詳細な説明
を省略して詳述すると、この例では、落石保護構造物で
あるシェッド71に本発明を適用例であり、該シェルター
71は、複数の主桁72を一体に緊結して山に沿う屋根73を
形成し、その主桁72はプレキャストコンクリート製であ
って、道路又は軌道幅方向に向うＰＣ鋼材によりプレテ
ンション方式で緊張力が付与されており、屋根73の道路
又は軌道方向の両側を柱75および壁76上に載置し縦締用
鋼材（図示せず）によって剛結一体化してシェッドを構
成している。そして、前記壁76の上面４に前記沓座５を
設けている。そして、前記縦締用鋼材を緩め、前記主桁
72の下面６と壁76の上面４との間にジャッキ21を挿入
し、沓座５を両側から挟むようにしてジャッキ21，21を
配置し、図２〜６に示したと同様に可動側の沓座を新し
い沓座５Ａに補修することができ、このような保護構造
物の屋根を構成する桁にも適用可能である。FIG. 14 shows a fourth embodiment of the present invention. The same parts as those in the above embodiments are designated by the same reference numerals, and detailed description thereof will be omitted. This is an example of applying the present invention to the shed 71
A plurality of main girders 72 are integrally joined to form a roof 73 along the mountain, and the main girders 72 are made of precast concrete, and are pretensioned by a PC steel material directed in a road or track width direction. A force is applied, and both sides of the roof 73 in the direction of the road or the track are placed on the columns 75 and the walls 76, and rigidly integrated with a vertical fastening steel (not shown) to form a shed. The shoe seat 5 is provided on the upper surface 4 of the wall 76. Then, loosen the steel material for vertical tightening, and
A jack 21 is inserted between the lower surface 6 of the 72 and the upper surface 4 of the wall 76, and the jacks 21, 21 are arranged so as to sandwich the shoe seat 5 from both sides. As shown in FIGS. Can be repaired to a new shoe seat 5A, and can be applied to the girder constituting the roof of such a protective structure.
【００２５】尚、本発明は上記各実施例に限定されるも
のではなく、本発明の容易の範囲内において、種々の変
形実施が可能である。例えば、本発明の方法に用いるジ
ャッキは実施例以外で各種のものを用いることができ
る。また、沓座はコンクリート以外でも各種材質のもの
の補修に適用できる。また、進退手段は油圧シリンダに
限らず、のこ歯ねじまたは角捩子で自動締まりのものを
用いるなど各種の手段を用いることができ、また、楔体
をそれぞれ別個の手段で内面側に押すような構成にして
もよく、要は対をなす楔体の間隔を狭めることができる
手段であればよい。さらに、楔部の形状はほぼＶ字形で
あればよい。また、変形例として、楔体の楔部の角度を
変えてやれば、角度の小さい側が上になるように斜めに
持ち上げることもできる。The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, various jacks other than the embodiment can be used for the jack of the present invention. In addition, the shoe seat can be applied to repair various materials other than concrete. In addition, the reciprocating means is not limited to the hydraulic cylinder, and various means such as a sawtooth screw or a screw automatically tightened with a square screw can be used, and the wedges are pushed to the inner surface side by separate means. Such a configuration may be adopted. In short, any means may be used as long as the distance between the paired wedge bodies can be reduced. Further, the shape of the wedge portion may be substantially V-shaped. Further, as a modified example, if the angle of the wedge portion of the wedge body is changed, the wedge can be lifted diagonally so that the side with the smaller angle is upward.
【００２６】[0026]
【発明の効果】請求項１の発明は、台座の上に沓座を設
け、この沓座に桁を載置した沓座の補修方法において、
前記台座と前記桁の下面との間に、該台座に下支持面を
載置すると共に前記桁下面に接する上昇降面を有するジ
ャッキを配置し、前記上昇降面の上昇により既設の沓座
と桁下面との間に隙間を形成した状態で、既設の沓座を
撤去し、新しい沓座と交換するものであり、仮設工や足
場が不要で、施工性に優れた沓座の補修方法を提供する
ことができる。According to a first aspect of the present invention, there is provided a method of repairing a shoe seat in which a shoe seat is provided on a pedestal and a beam is placed on the shoe seat.
Between the pedestal and the lower surface of the girder, a lower support surface is placed on the pedestal and a jack having a rising and lowering surface that is in contact with the lower surface of the girder is arranged. With a gap formed between the underside of the girder and the existing one, the existing one is removed and replaced with a new one.There is no need for temporary work or scaffolding. Can be provided.
【００２７】また、請求項２の発明は、前記下支持面を
前記桁の下方に配置すると共に、前記沓座の両側にジャ
ッキを配置するものであり、仮設工や足場が不要で、施
工性に優れた沓座の補修方法を提供することができる。According to a second aspect of the present invention, the lower support surface is disposed below the girder, and jacks are disposed on both sides of the shoe seat. It is possible to provide an excellent method of repairing the shoe seat.
【００２８】また、請求項３の発明は、前記ジャッキ
は、内面を対向して設けられ両側が外面に向かって肉薄
になる一対の昇降体と、これら昇降体の両側に配置され
前記昇降体の内面間に先端が挿入される一対の楔体と、
これら楔体を前記内面側に進退する進退手段とを備える
ものであり、仮設工や足場が不要で、施工性に優れた沓
座の補修方法を提供することができる。According to a third aspect of the present invention, the jack comprises a pair of elevating members provided with their inner surfaces opposed to each other and having both sides thinner toward the outer surface, and a pair of the elevating members arranged on both sides of the elevating members. A pair of wedges, the tips of which are inserted between the inner surfaces,
The wedge body is provided with an advancing / retreating means for advancing / retreating to the inner surface side, and a temporary seating work and a scaffold are unnecessary, and a method of repairing a shoe seat excellent in workability can be provided.
【図１】本発明の第１実施例を示す沓座回りの断面図で
ある。FIG. 1 is a cross-sectional view of a shoe seat circumference showing a first embodiment of the present invention.
【図２】本発明の第１実施例を示す図１のＩ−Ｉ線断面
図であり、隙間にジャッキを挿入する工程を示す。FIG. 2 is a sectional view taken along line II of FIG. 1 showing the first embodiment of the present invention, showing a step of inserting a jack into a gap.
【図３】本発明の第１実施例を示すジャッキを上げて支
持する工程を示す断面図である。FIG. 3 is a sectional view showing a step of raising and supporting a jack according to the first embodiment of the present invention.
【図４】本発明の第１実施例を示す型枠にコンクリート
を充填する工程を示す断面図である。FIG. 4 is a cross-sectional view showing a step of filling concrete into a formwork according to the first embodiment of the present invention.
【図５】本発明の第１実施例を示す新設の沓座の養生後
にジャッキを下げる工程を示す断面図である。FIG. 5 is a cross-sectional view showing a step of lowering a jack after curing a newly-installed shoe seat according to the first embodiment of the present invention.
【図６】本発明の第１実施例を示す補修後の断面図であ
る。FIG. 6 is a cross-sectional view showing a first embodiment of the present invention after repair.
【図７】本発明の第１実施例を示す橋梁の側面図であ
る。FIG. 7 is a side view of the bridge showing the first embodiment of the present invention.
【図８】本発明の第１実施例を示すジャッキ装置の斜視
図である。FIG. 8 is a perspective view of the jack device according to the first embodiment of the present invention.
【図９】本発明の第１実施例を示すジャッキ装置の側面
図である。FIG. 9 is a side view of the jack device according to the first embodiment of the present invention.
【図１０】本発明の第１実施例を示す使用状態における
昇降体と楔体の側面図である。FIG. 10 is a side view of the elevating body and the wedge body in a use state according to the first embodiment of the present invention.
【図１１】本発明の第１実施例を示すジャッキ回りの断
面図であり、図１１（Ａ）は上側の昇降体の他側が桁の
下面に当接した状態、図１１（Ｂ）は上側の昇降体の外
面が桁の下面に面接触した状態を示す。11 is a cross-sectional view around the jack showing the first embodiment of the present invention. FIG. 11 (A) shows a state where the other side of the upper elevating body is in contact with the lower surface of the girder, and FIG. 11 (B) shows an upper side. 2 shows a state in which the outer surface of the lifting body is in surface contact with the lower surface of the girder.
【図１２】本発明の第２実施例の施工工程を示す断面図
である。FIG. 12 is a cross-sectional view illustrating a construction process according to a second embodiment of the present invention.
【図１３】本発明の第３実施例を示すシェルターの断面
図である。FIG. 13 is a sectional view of a shelter showing a third embodiment of the present invention.
【図１４】本発明の第４実施例を示すシェッドの断面図
である。FIG. 14 is a sectional view of a shed showing a fourth embodiment of the present invention.
３ 桁 ４ 上面（台座） ５ 沓座（既設） ５Ａ 沓座（新設） ６ 下面 ７ 下支持面 ８ 上昇降面 21 ジャッキ 22 昇降体 23，23Ａ 楔体 24 内面 25 外面 33 油圧シリンダ（進退手段） 62 プレキャストコンクリートアーチ版（桁） 72 主桁（桁） Ｓ 隙間 3 digits 4 Upper surface (pedestal) 5 Shoes seat (existing) 5A Shoes seat (newly installed) 6 Lower surface 7 Lower support surface 8 Elevating surface 21 Jack 22 Elevating body 23, 23A Wedge body 24 Inner surface 25 Outer surface 33 Hydraulic cylinder (Advancing / retracting means) 62 Precast concrete arch plate (girder) 72 Main girder (girder) S Clearance
Claims (3)
載置した沓座の補修方法において、前記台座と前記桁の
下面との間に、該台座に下支持面を載置すると共に前記
桁下面に接する上昇降面を有するジャッキを配置し、前
記上昇降面の上昇により既設の沓座と桁下面との間に隙
間を形成した状態で、既設の沓座を撤去し、新しい沓座
と交換することを特徴とする沓座の補修方法。1. A method for repairing a shoe seat, wherein a shoe seat is provided on a base and a girder is mounted on the shoe seat, wherein a lower support surface is mounted on the base between the base and the lower surface of the girder. Place and place a jack having a rising and falling surface in contact with the lower surface of the girder, and remove the existing shoe seat in a state where a gap is formed between the existing shoe seat and the lower surface of the girder by raising the rising and lowering surface. The method of repairing the Kutsuza, characterized by replacing it with a new one.
と共に、前記沓座の両側にジャッキを配置することを特
徴とする請求項１記載の沓座の補修方法。2. The shoe seat repair method according to claim 1, wherein the lower support surface is arranged below the girder, and jacks are arranged on both sides of the shoe seat.
れ両側が外面に向かって肉薄になる一対の昇降体と、こ
れら昇降体の両側に配置され前記昇降体の内面間に先端
が挿入される一対の楔体と、これら楔体を前記内面側に
進退する進退手段とを備えることを特徴とする請求項１
又は２記載の沓座の補修方法。3. The jack is provided with a pair of elevating members provided with their inner surfaces facing each other and having both sides thinner toward the outer surface, and a tip inserted between the inner surfaces of the elevating members disposed on both sides of the elevating members. And a pair of wedges, and advancing / retreating means for moving the wedges toward the inner surface.
Or the method of repairing the shoe seat according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000065583A JP2001254315A (en) | 2000-03-09 | 2000-03-09 | Repairing method of shoe seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000065583A JP2001254315A (en) | 2000-03-09 | 2000-03-09 | Repairing method of shoe seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001254315A true JP2001254315A (en) | 2001-09-21 |
Family
ID=18585081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000065583A Pending JP2001254315A (en) | 2000-03-09 | 2000-03-09 | Repairing method of shoe seat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001254315A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026161A (en) * | 2010-07-23 | 2012-02-09 | Kajima Corp | Structure and method for temporarily receiving construction |
| JP2016135952A (en) * | 2015-01-23 | 2016-07-28 | 日鉄住金テックスエンジ株式会社 | Water leakage repair device and water leakage repair method |
| JP2016160636A (en) * | 2015-02-27 | 2016-09-05 | 大成建設株式会社 | Base isolation repair method |
| CN106320193A (en) * | 2016-11-09 | 2017-01-11 | 郑州航空工业管理学院 | Method for leveling bridge support during replacement and new installation |
| JP6220997B1 (en) * | 2017-01-30 | 2017-10-25 | 株式会社エステック | Installation method of electrodes for cathodic protection |
| CN108442260A (en) * | 2018-03-26 | 2018-08-24 | 中交路桥建设有限公司 | Construction technology for large heavy girder bearing replacement |
| CN112854025A (en) * | 2021-01-13 | 2021-05-28 | 中铁九局集团有限公司 | Construction method for treating corner overrun defect of high-speed railway bridge support |
| CN114370010A (en) * | 2022-01-21 | 2022-04-19 | 广东建科建筑工程技术开发有限公司 | Bridge support system repair structure and construction process |
-
2000
- 2000-03-09 JP JP2000065583A patent/JP2001254315A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026161A (en) * | 2010-07-23 | 2012-02-09 | Kajima Corp | Structure and method for temporarily receiving construction |
| JP2016135952A (en) * | 2015-01-23 | 2016-07-28 | 日鉄住金テックスエンジ株式会社 | Water leakage repair device and water leakage repair method |
| JP2016160636A (en) * | 2015-02-27 | 2016-09-05 | 大成建設株式会社 | Base isolation repair method |
| CN106320193A (en) * | 2016-11-09 | 2017-01-11 | 郑州航空工业管理学院 | Method for leveling bridge support during replacement and new installation |
| JP6220997B1 (en) * | 2017-01-30 | 2017-10-25 | 株式会社エステック | Installation method of electrodes for cathodic protection |
| CN108442260A (en) * | 2018-03-26 | 2018-08-24 | 中交路桥建设有限公司 | Construction technology for large heavy girder bearing replacement |
| CN108442260B (en) * | 2018-03-26 | 2019-03-22 | 中交路桥建设有限公司 | Construction technology for large heavy girder bearing replacement |
| CN112854025A (en) * | 2021-01-13 | 2021-05-28 | 中铁九局集团有限公司 | Construction method for treating corner overrun defect of high-speed railway bridge support |
| CN114370010A (en) * | 2022-01-21 | 2022-04-19 | 广东建科建筑工程技术开发有限公司 | Bridge support system repair structure and construction process |
| CN114370010B (en) * | 2022-01-21 | 2022-10-25 | 广东建科建筑工程技术开发有限公司 | Bridge support system repair structure and construction process |
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