JPH09177031A - Provisionally receiving facility for jack in repair work of main girder constituting elevated bridge, etc. - Google Patents
Provisionally receiving facility for jack in repair work of main girder constituting elevated bridge, etc.Info
- Publication number
- JPH09177031A JPH09177031A JP35177795A JP35177795A JPH09177031A JP H09177031 A JPH09177031 A JP H09177031A JP 35177795 A JP35177795 A JP 35177795A JP 35177795 A JP35177795 A JP 35177795A JP H09177031 A JPH09177031 A JP H09177031A
- Authority
- JP
- Japan
- Prior art keywords
- jack
- main girder
- support
- pier
- repair work
- 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、高架橋梁などを
構成する主桁の補修工事におけるジャッキの仮受設備の
改善に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of jack temporary receiving equipment in repair work of main girders which constitute viaduct beams and the like.
【０００２】[0002]
【従来の技術】 従来、この種高架橋梁などを構成する
主桁、詳しくは、道路床版や車両軌条設備など重量物を
付設した主桁の補修工事におけるジャッキの仮受設備と
しては、図５，図６に示すような設備がある。一般に地
震やその他の原因により橋梁主桁を橋脚に支承連結する
主桁支承（沓）が損壊したり、あるいは支承近傍の主桁
が損傷した場合に、主桁支承（沓）の交換や主桁の補修
を行なう必要がある。この場合、主桁の下面と橋脚上面
の間にジャッキを介装するに充分な空隙が存在する場合
は別問題として、ジャッキを介装することができない時
にはジャッキの仮受設備を橋脚上部にとりつけて主桁を
必要高さまで扛重し、各種の補修工事を行なう必要があ
る。従来技術では、図５で示すように、補修しようとす
る主桁１と橋脚２の近傍に吊足場（図示略）を構成し、
この吊足場を利用して、図６に示すようなジャッキ３搭
載用のブラケット４を、橋脚２上部側面の所要個所に、
数多くの而も長尺なアンカーボルト５を多数打ち込んで
固定し、前記ブラケット４の上にジャッキ３を搭載し、
このジャッキ３の扛重作用で主桁１を所定の高さまで扛
重したのち、損壊した主桁支承（沓）（図示略）を交換
したり、主桁１や橋脚上部の損傷個所を補修していた。2. Description of the Related Art Conventionally, as a temporary support facility for jacks in repair work of main girders that constitute this kind of viaduct beams, more specifically, main girders with heavy objects such as road slabs and vehicle track equipment, There are facilities as shown in FIG. Generally, when the main girder bearing (bearing) that connects the bridge main girder to the pier is damaged or the main girder near the bearing is damaged due to an earthquake or other causes, replacement of the main girder bearing (bearing) or main girder Need to be repaired. In this case, if there is a sufficient gap between the lower surface of the main girder and the upper surface of the pier to install the jack, another problem is that when the jack cannot be installed, the temporary support equipment for the jack is installed on the upper part of the pier. The main girder must be weighed up to the required height and various repair work must be performed. In the prior art, as shown in FIG. 5, a suspension scaffold (not shown) is formed near the main girder 1 and the pier 2 to be repaired,
Using this suspension scaffold, a bracket 4 for mounting the jack 3 as shown in FIG. 6 is provided at a required position on the upper side surface of the pier 2,
A large number of extremely long anchor bolts 5 are driven in and fixed, and the jack 3 is mounted on the bracket 4.
After the main girder 1 is lifted to a predetermined height by the lifting action of the jack 3, the damaged main girder bearing (sill) (not shown) is replaced, and the main girder 1 and the damaged part on the pier upper part are repaired. Was there.
【０００３】[0003]
【発明が解決しようとする課題】 前述した図５，図６
に示す従来技術は、主桁１を扛重するジャッキ３を搭載
支持するブラケット４を、アンカーボルト５を用いて橋
脚２の上部側面に仮固定するようにしたものであるた
め、図５の矢印で示すように、ブラケット４に印加され
る大きな垂直荷重Ｗに対応する大きな回転モーメントＭ
が各アンカーボルト５に作用する。この回転モーメント
Ｍを垂直荷重Ｗに対応させるためには、数多くの而も長
尺のアンカーボルト５を用いなければならない。このこ
とは、ブラケット４を橋脚２に仮固定するために多くの
時間と労力が要求されるばかりでなく、高所作業である
ことから作業者の安全に充分な作業足場の架設を要し、
又補修作業後におけるブラケット４の撤去並びにアンカ
ーボルト５を挿入した孔の埋め込み補修などに多くの時
間を要するという課題がある。[Problems to be Solved by the Invention]
In the conventional technique shown in FIG. 5, since the bracket 4 for mounting and supporting the jack 3 that holds the main girder 1 is temporarily fixed to the upper side surface of the pier 2 using the anchor bolt 5, the arrow in FIG. As shown by, the large rotational moment M corresponding to the large vertical load W applied to the bracket 4
Acts on each anchor bolt 5. In order to make this rotational moment M correspond to the vertical load W, many extra long anchor bolts 5 must be used. This not only requires a lot of time and labor for temporarily fixing the bracket 4 to the bridge pier 2, but also requires the construction of a work scaffold that is sufficient for the safety of the worker because it is work at a high place,
Further, there is a problem that it takes a lot of time to remove the bracket 4 after the repair work and to bury and repair the hole into which the anchor bolt 5 is inserted.
【０００４】本発明の目的は、橋脚に簡単に架設するこ
とができ、しかも小規模で耐荷重性の大きなジャッキの
仮受設備を提供することにある。It is an object of the present invention to provide a temporary receiving facility for a jack that can be easily installed on a pier and that is small in size and has a large load bearing capacity.
【０００５】[0005]
【課題を解決するための手段】 上記目的は、コンクリ
ート橋脚の上面と側壁面にそって支持され、かつ、補修
しようとする主桁の両側に配設される側面形状がＬ型を
した２個一組の支承体と、該支承体を構成する垂直杆部
の下端間に橋架されるジャッキの受台と、前記支承体を
構成する水平杆部を橋脚に固定するアンカーボルトとよ
りなることにより達成される。[Means for Solving the Problems] The above object is to support two concrete girders along the upper surface and side wall surfaces, and to provide two L-shaped side surfaces on both sides of a main girder to be repaired. By a set of bearings, a pedestal of a jack bridged between the lower ends of vertical rods constituting the bearings, and anchor bolts for fixing the horizontal rods constituting the bearings to the piers. To be achieved.
【０００６】[0006]
【発明の実施の形態】 図面について本発明実施例の詳
細を説明する。図１は通常の橋梁の一部側面図、図２は
橋梁主桁の補修状態を示す橋梁の一部側面図、図３はジ
ャッキによる主桁の扛重状態を示す要部の拡大斜視図、
図４は補修作業を示す要部の拡大側面図である。Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partial side view of a normal bridge, FIG. 2 is a partial side view of a bridge showing a repaired state of a bridge main girder, and FIG. 3 is an enlarged perspective view of an essential part showing a heavy state of a main girder by a jack.
FIG. 4 is an enlarged side view of the main part showing the repair work.
【０００７】図３について本発明の仮受設備の詳細を説
明する。Ａはジャッキの仮受設備であって、該仮受設備
Ａは、コンクリート橋脚１１の上面１１ａと側壁面１１
ｂに沿って支持されるとともに、補修しようとする主桁
１２の両側に配設され、かつ側面形状がＬ型をした２個
一組の支承体１３と、この支承体１３を構成する垂直杆
部１３ａの下端間に、水平姿勢の受台１４を橋架的に連
結し、一方、前記支承体１３を構成する水平杆部１３ｂ
を、前記橋脚１１の上面に打ち込まれるアンカーボルト
１５にて仮固定するようにしたものによって構成され
る。前記アングル構造の支承体１３と受台１４の連結手
段は、溶接手段などにより一体に構成するか、あるいは
他の連結手段により分解可能とするものである。そし
て、前記受台１４上にはジャッキ１６を搭載支持するも
のであるが、ジャッキ１６の台座１６ａをボルト（図示
略）にて受台１４に固定することが望ましい。又図４に
示すように、前記受台１４をブラケット構造の受台１４
ａとしてもよい。Details of the temporary receiving equipment of the present invention will be described with reference to FIG. A is a jack temporary receiving facility, and the temporary receiving facility A is a top surface 11a and a side wall surface 11 of a concrete pier 11.
A pair of bearings 13 supported along b, arranged on both sides of the main girder 12 to be repaired, and having an L-shaped side surface, and a vertical rod that constitutes this bearing 13. A pedestal 14 in a horizontal posture is bridge-connected between the lower ends of the portions 13a, while a horizontal rod portion 13b constituting the support 13 is provided.
Is temporarily fixed by an anchor bolt 15 driven into the upper surface of the pier 11. The connecting means of the support 13 and the pedestal 14 having the angle structure is integrally formed by welding means or the like, or can be disassembled by other connecting means. The jack 16 is mounted and supported on the pedestal 14, and it is preferable that the pedestal 16a of the jack 16 is fixed to the pedestal 14 with a bolt (not shown). Further, as shown in FIG. 4, the pedestal 14 has a bracket structure.
a may be used.
【０００８】[0008]
【補修工法の説明】 図２，図３のように主桁支承
（沓）１７が地震などの原因で座屈した場合の補修につ
いて説明する。橋脚１１の上面１１ａに主桁１２の一端
部が接触し、この主桁１２と橋脚１１の上面１１ａとの
間に主桁扛重用のジャッキ１６の介入間隙がない場合、
図に示すように、補修しようとする主桁１２の下部全域
を含むように養生された吊足場（図示略）を架設する。
そして、この吊足場を作業床として主桁１２の両側が支
承体１３によって挟まれるように、ジャッキの仮受設備
Ａを図のように吊り込みセットするか、あるいは現場組
立てを行ったのち、仮受設備Ａを構成する支承体１３の
水平杆部１３ａをアンカーボルト１５にて橋脚１１に仮
固定するとともに、受台１４上にジャッキ１６を搭載支
持する。一方、ジャッキ１６の作用ロッド１６ｂが仕掛
けられる部分に対応する主桁１２のウエブ１２ａ，上下
のフランジ１２ｂ部及び主桁支承（沓）１７の設置部位
に対応する主桁１２のウエブ１２ａ，上下のフランジ１
２ｂ部の左右両面の塗装を剥離するとともに、この剥離
された部分に補強用のスチフナー１８，１９を溶接する
け書線を施し、この溶接け書線にそって図のようにスチ
フナー１８，１９を溶接して主桁１２の当該部を補強す
る。この補強工法が済んだのち、ジャッキ１６を作動さ
せ、これの作用ロッド１６ｂにて主桁１２を、図２の仮
想線又は図４の仮想線の部位、即ち、主桁支承（沓）１
７の高さより更に上位まで扛重する。次いで、破壊され
た主桁支承（沓）１７の撤去，周辺の橋脚１１上部など
の補修を行ない、この部位に新しい主桁支承（沓）１７
を設置したのち、ジャッキ１６を操作して主桁１２を下
降させ、主桁１２の下面を図４の実線で示すように主桁
支承（沓）１７上に乗載するとともに、主桁１２の全荷
重をジャッキ１６から主桁支承（沓）１７に盛り替え
る。盛り替え作業が済んだらジャッキ１６を取り外して
他の作業現場に搬出し、前記同様の作業に従事させると
ともに、仮受設備Ａを撤去し、他の作業現場に使用すべ
く搬出する。この撤去作業と併行して新しくセットされ
た主桁支承（沓）１７の主桁１２への溶接固定及び橋脚
１１への固定作業を行なうものである。そして、前記ス
チフナー１８，１９の取り外し及び剥離塗装部の塗装を
行って作業は終る。吊足場は作業内容の進行に伴い不必
要な時点で撤去すればよい。又主桁支承（沓）１７の交
換作業以外の補修作業も同様にして行なうことができ
る。[Explanation of Repair Method] The repair when the main girder support (sill) 17 buckles due to an earthquake as shown in FIGS. 2 and 3 will be described. When one end of the main girder 12 comes into contact with the upper surface 11a of the bridge pier 11 and there is no intervention gap between the main girder 12 and the upper surface 11a of the pier 11, there is no intervening gap of the main girder-loading jack 16.
As shown in the figure, a suspension scaffold (not shown) is erected so as to include the entire lower portion of the main girder 12 to be repaired.
Then, after suspending and setting the temporary support equipment A for the jack as shown in the figure so that both sides of the main girder 12 are sandwiched by the supports 13 using this suspended scaffold as a work floor, or temporary assembly is performed, The horizontal rod portion 13a of the support 13 that constitutes the receiving equipment A is temporarily fixed to the pier 11 by the anchor bolts 15, and the jack 16 is mounted and supported on the receiving base 14. On the other hand, the web 12a of the main girder 12 corresponding to the portion where the working rod 16b of the jack 16 is mounted, the upper and lower flanges 12b and the web 12a of the main girder 12 corresponding to the installation site of the main girder support (shoe) 17, Flange 1
The paint on both the left and right sides of the 2b part is peeled off, and the stiffeners 18 and 19 for welding the reinforcing stiffeners 18 and 19 are applied to the peeled parts, and the stiffeners 18 and 19 are drawn along the welding streak lines as shown in the figure. Are welded to reinforce the relevant part of the main girder 12. After completion of this reinforcing method, the jack 16 is operated, and the main girder 12 is moved by the working rod 16b of the jack 16 to the portion of the phantom line of FIG. 2 or the phantom line of FIG. 4, that is, the main girder bearing (trough) 1.
Weigh even higher than the height of 7. Next, the destroyed main girder bearing (gill) 17 is removed, and the surrounding upper part of the bridge pier 11 is repaired, and a new main girder bearing (gill) 17 is attached to this part.
After installing the main girder 12, the jack 16 is operated to lower the main girder 12, and the lower surface of the main girder 12 is mounted on the main girder support (sill) 17 as shown by the solid line in FIG. The total load is changed from the jack 16 to the main girder support (shoe) 17. After the refilling work is completed, the jack 16 is removed and carried to another work site to engage in the same work as described above, the temporary receiving equipment A is removed, and the work is carried out to be used at another work site. In parallel with this removal work, the newly set main girder support (sill) 17 is welded and fixed to the main girder 12 and fixed to the pier 11. Then, the stiffeners 18 and 19 are removed and the peeling coating portion is painted, and the work is completed. The suspension scaffold may be removed at an unnecessary point as the work progresses. Further, repair work other than replacement work of the main girder support (shoe) 17 can be performed in the same manner.
【０００９】[0009]
【発明の効果】 上述のように本発明の構成によれば、
次のような効果が得られる。ジャッキの仮受設備を、橋
脚の上面と側壁面にそって支持される２個一組のＬ型構
造の支承体と、該支承体の下端間に橋架されるジャッキ
受台とによって構成せしめたので、支承体を構成する水
平杆部が橋脚上にアンカーボルトにより簡単に乗載支持
することができる。又従来技術のように大きな回転モー
メントが作用しないので全体が小規模化され、取り扱い
が簡便であるとともに、補修作業性及び経済的効果の向
上が図れる。According to the configuration of the present invention as described above,
The following effects can be obtained. The jack temporary support equipment is composed of a pair of L-shaped support bodies supported along the upper surface and side wall surface of the pier and a jack pedestal bridged between the lower ends of the support bodies. Therefore, the horizontal rod portion that constitutes the support can be easily mounted and supported on the bridge pier by the anchor bolts. Further, unlike the prior art, since a large rotational moment does not act, the whole is miniaturized, the handling is simple, and the repair workability and the economical effect can be improved.
【図１】 通常の橋梁の一部側面図である。FIG. 1 is a partial side view of an ordinary bridge.
【図２】 橋梁主桁の補修状態を示す橋梁の一部側面図
である。FIG. 2 is a partial side view of the bridge showing a repaired state of the bridge main girder.
【図３】 ジャッキによる主桁の扛重状態を示す要部の
拡大斜視図である。FIG. 3 is an enlarged perspective view of an essential part showing a state in which a main girder is weighed by a jack.
【図４】 補修作業を示す要部の拡大側面図である。FIG. 4 is an enlarged side view of a main part showing a repair work.
【図５】 従来のジャッキ仮受設備の構成を示す要部の
側面図である。FIG. 5 is a side view of essential parts showing a configuration of a conventional jack temporary receiving facility.
【図６】 従来のジャッキ受けブラケットの斜視図であ
る。FIG. 6 is a perspective view of a conventional jack receiving bracket.
Ａ 仮受設備 １１ コンクリート橋脚 １１ａ コンクリート橋脚の上面 １１ｂ コンクリート橋脚の側壁面 １２ 主桁 １３ 支承体 １３ａ 垂直杆部 １３ｂ 水平杆部 １４ 受台 １５ アンカーボルト １６ ジャッキ １６ａ 台座 １６ｂ 作用ロッド １７ 主桁支承（沓） １８ スチフナー １９ スチフナー A Temporary receiving equipment 11 Concrete pier 11a Top surface of concrete pier 11b Side wall of concrete pier 12 Main girder 13 Support 13a Vertical rod 13b Horizontal rod 14 Cradle 15 Anchor bolt 16 Jack 16a Pedestal 16b Working rod 17 Main girder support ( 18) Stiffener 19 Stiffener
Claims (1)
て支持され、かつ、補修しようとする主桁の両側に配設
される側面形状がＬ型をした２個一組の支承体と、該支
承体を構成する垂直杆部の下端間に橋架されるジャッキ
の受台と、前記支承体を構成する水平杆部を橋脚に固定
するアンカーボルトとよりなることを特徴とする高架橋
梁などを構成する主桁の補修工事におけるジャッキの仮
受設備。1. A pair of bearings, which are supported along the upper surface and side wall surface of a concrete bridge pier and are arranged on both sides of a main girder to be repaired, having an L-shaped side surface, A viaduct beam or the like characterized by comprising a jack pedestal bridged between the lower ends of vertical rods constituting the support and anchor bolts fixing the horizontal rods constituting the support to the pier Temporary jack receiving equipment for repair work on main girders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35177795A JPH09177031A (en) | 1995-12-27 | 1995-12-27 | Provisionally receiving facility for jack in repair work of main girder constituting elevated bridge, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35177795A JPH09177031A (en) | 1995-12-27 | 1995-12-27 | Provisionally receiving facility for jack in repair work of main girder constituting elevated bridge, etc. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09177031A true JPH09177031A (en) | 1997-07-08 |
Family
ID=18419548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35177795A Pending JPH09177031A (en) | 1995-12-27 | 1995-12-27 | Provisionally receiving facility for jack in repair work of main girder constituting elevated bridge, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09177031A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100400701B1 (en) * | 2001-06-14 | 2003-10-08 | 조영철 | Method and apparatus for lifting upper portion of bridge |
| JP2015218454A (en) * | 2014-05-15 | 2015-12-07 | 靖弘 井上 | Bridge seat member fitting structure for bridge lower structure |
| JP2020016140A (en) * | 2019-03-07 | 2020-01-30 | 東亜建設工業株式会社 | Method for manufacturing erection concrete structure in water area |
-
1995
- 1995-12-27 JP JP35177795A patent/JPH09177031A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100400701B1 (en) * | 2001-06-14 | 2003-10-08 | 조영철 | Method and apparatus for lifting upper portion of bridge |
| JP2015218454A (en) * | 2014-05-15 | 2015-12-07 | 靖弘 井上 | Bridge seat member fitting structure for bridge lower structure |
| JP2020016140A (en) * | 2019-03-07 | 2020-01-30 | 東亜建設工業株式会社 | Method for manufacturing erection concrete structure in water area |
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