JP2001106484A - Jack device dedicated for replacement of steel bridge support and method for replacement - Google Patents
Jack device dedicated for replacement of steel bridge support and method for replacementInfo
- Publication number
- JP2001106484A JP2001106484A JP28680999A JP28680999A JP2001106484A JP 2001106484 A JP2001106484 A JP 2001106484A JP 28680999 A JP28680999 A JP 28680999A JP 28680999 A JP28680999 A JP 28680999A JP 2001106484 A JP2001106484 A JP 2001106484A
- Authority
- JP
- Japan
- Prior art keywords
- bracket
- main girder
- replacement
- bearing
- jack
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼橋の支承取替専
用ジャッキ装置とそれを用いた鋼橋の支承取替方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack device exclusively for replacing a steel bridge, and a method for replacing a steel bridge using the same.
【０００２】[0002]
【従来の技術】鋼橋の支承取替は、従来、図４に示すよ
うに、主桁１の下面と橋脚２の上面の間に油圧ジャッキ
３をセットし、油圧ジャッキ３を作動させて主桁１を持
ち上げ、支承４を取り替えることにより行う。あるい
は、図５〜図９に示すように、主桁１に仮設ブラケット
５を高力ボルト６で取り付け、橋脚２の外側端面２ｂに
もジャッキ受け用の受台ブラケット７を取り付け、仮設
ブラケット５下面と橋脚２上面または受台ブラケット７
上面との間に油圧ジャッキ３をセットし、橋脚２を持ち
上げ、支承４を取り替えることにより行う。2. Description of the Related Art Conventionally, as shown in FIG. 4, a steel bridge is replaced by setting a hydraulic jack 3 between a lower surface of a main girder 1 and an upper surface of a pier 2, and operating the hydraulic jack 3 as shown in FIG. This is done by lifting the girder 1 and replacing the bearing 4. Alternatively, as shown in FIGS. 5 to 9, the temporary bracket 5 is attached to the main girder 1 with high-strength bolts 6, and the pedestal bracket 7 for receiving the jack is attached to the outer end surface 2 b of the pier 2. And pier 2 upper surface or cradle bracket 7
This is performed by setting the hydraulic jack 3 between the upper surface, lifting the pier 2 and replacing the bearing 4.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の支承取
替にはつぎの問題がある。図４の方法では、油圧ジャッ
キ３が、支承４と干渉しない橋脚２の中央から離れた、
橋脚前面２ａに寄った位置にセットされるため、橋脚２
がコンクリート製の場合、剪断抵抗面８が小さくなって
剪断抵抗面８に作用する応力度が大きくなり、橋脚２本
体および主桁１の補強が必要となる。図５〜図９の方法
では、油圧ジャッキ３を支承４と干渉することなく橋脚
２の中央寄りに配置できるため、剪断抵抗面８が大きく
なって、剪断抵抗面８に作用する応力度からは有利にな
るが、 ・仮設ブラケット５の重量が大きく、現場作業性が悪
い、 ・仮設ブラケット５の転用が難しく、費用がかかりすぎ
る、 ・既設橋梁、橋脚であるため、ジャッキアップスペース
が非常に狭い、等の問題がある。本発明の目的は、剪断
応力度上の問題を生じず、かつ転用の困難な仮設ブラケ
ットを用いない、鋼橋の支承取替専用ジャッキ装置とそ
れを用いた鋼橋の支承取替方法を提供することにある。However, the conventional bearing replacement has the following problems. In the method of FIG. 4, the hydraulic jack 3 is separated from the center of the pier 2 which does not interfere with the bearing 4,
The pier 2 is set at a position close to the pier front 2a.
When is made of concrete, the shear resistance surface 8 is reduced, the stress acting on the shear resistance surface 8 is increased, and the pier 2 main body and the main girder 1 need to be reinforced. In the method of FIGS. 5 to 9, since the hydraulic jack 3 can be arranged near the center of the pier 2 without interfering with the bearing 4, the shear resistance surface 8 becomes large, and the stress acting on the shear resistance surface 8 is reduced. Advantages, ・ The weight of the temporary bracket 5 is large and workability at the site is poor. ・ Diversion of the temporary bracket 5 is difficult and costly. ・ The jack-up space is very narrow because of existing bridges and piers. , Etc. SUMMARY OF THE INVENTION An object of the present invention is to provide a dedicated jacking device for replacing a steel bridge and a method for replacing a steel bridge using the same, which does not cause a problem on the degree of shear stress and does not use a temporary bracket that is difficult to convert. Is to do.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の本発明はつぎの通りである。 （１） 並列配置の複数のシリンダー型油圧ジャッキ
と、油圧ジャッキの並び方向に延びるプレートを有し前
記油圧ジャッキが固定された第１のブラケットと、前記
第１のブラケットのプレートに高力ボルトを用いて結合
され主桁腹板に高力ボルトを用いて結合される第２のブ
ラケットと、からなる鋼橋の支承取替専用ジャッキ装
置。 （２） 複数のシリンダー型油圧ジャッキと前記油圧ジ
ャッキが固定された第１のブラケットと前記第１のブラ
ケットに高力ボルトを用いて結合される第２のブラケッ
トとからなる支承取替専用ジャッキ装置の前記油圧ジャ
ッキと第１のブラケットを鋼橋の遊間に配置して第２の
ブラケットを第１のブラケットと主桁の腹板に高力ボル
トを用いて結合し、前記油圧ジャッキにより桁端を持ち
上げ、古い支承を新しい支承と交換し、前記油圧ジャッ
キにより桁端を新しい支承の上におろし、前記第２のブ
ラケットを第１のブラケットと主桁の腹板から取外し、
ついで前記油圧ジャッキと第１のブラケットを鋼橋の遊
間から除去する、工程からなる支承取替専用ジャッキ装
置を用いた鋼橋の支承取替方法。The present invention for achieving the above object is as follows. (1) A plurality of cylinder-type hydraulic jacks arranged in parallel, a first bracket having a plate extending in the direction in which the hydraulic jacks are arranged, and a first bracket to which the hydraulic jack is fixed, and a high-strength bolt attached to the plate of the first bracket. And a second bracket coupled to the main girder plate using high-strength bolts by using a high-strength bolt. (2) A dedicated jacking device for replacing bearings, comprising a plurality of cylinder-type hydraulic jacks, a first bracket to which the hydraulic jack is fixed, and a second bracket coupled to the first bracket by using a high-strength bolt. The hydraulic jack and the first bracket are arranged in the play of the steel bridge, and the second bracket is connected to the first bracket and the web of the main girder using a high-strength bolt. Lifting, replacing the old bearing with a new bearing, lowering the girder end with the hydraulic jack on the new bearing, removing the second bracket from the first bracket and the web of the main girder,
Then, the hydraulic jack and the first bracket are removed from the gap between the steel bridges.
【０００５】上記（１）の鋼橋の支承取替専用ジャッキ
装置および上記（２）の支承取替専用ジャッキ装置を用
いた鋼橋の支承取替方法では、油圧ジャッキを主桁端の
遊間にセットするので、橋脚前面から離れた位置とな
り、橋脚に働く剪断応力度が小さくなる。また、主桁の
端部に取り付け用ボルト孔を穿設して、高力ボルトで第
２のブラケットと結合すればよいので、支承取替専用ジ
ャッキ装置の任意の橋梁への転用が容易であり、従来に
比べてコストダウンとなる。[0005] In the method for replacing a steel bridge using the jack device dedicated to replacing the bridge of the above (1) and the jack device dedicated to replacing the bearing of the above item (2), the hydraulic jack is connected to the gap between the ends of the main girder. Since it is set, it becomes a position away from the front of the pier, and the shear stress acting on the pier decreases. In addition, since it is sufficient to form a mounting bolt hole at the end of the main girder and connect it to the second bracket with a high-strength bolt, it is easy to convert the jack device dedicated to replacing the bearing to any bridge. Therefore, the cost is reduced as compared with the related art.
【０００６】[0006]
【発明の実施の形態】本発明実施例の鋼橋の支承取替専
用ジャッキ装置とそれを用いた鋼橋の支承取替方法を、
図１〜図３を参照して説明する。本発明実施例の鋼橋の
支承取替専用ジャッキ装置９は、並列配置の複数のシリ
ンダー型油圧ジャッキ１０と、油圧ジャッキ１０の並び
方向に延びるプレート１１を有し油圧ジャッキ１０が固
定された第１のブラケット１２と、第１のブラケット１
２のプレート１１に高力ボルト１３を用いて結合され主
桁１の腹板１ａに高力ボルト１３を用いて結合される第
２のブラケット１４と、からなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A jack device dedicated to replacing a steel bridge according to an embodiment of the present invention and a method for replacing a bearing of a steel bridge using the same are described below.
This will be described with reference to FIGS. The dedicated jack device 9 for replacing a steel bridge support according to the embodiment of the present invention includes a plurality of cylinder-type hydraulic jacks 10 arranged in parallel and a plate 11 extending in the direction in which the hydraulic jacks 10 are arranged. 1 bracket 12 and first bracket 1
A second bracket 14 connected to the second plate 11 using high-strength bolts 13 and connected to the abdominal plate 1a of the main girder 1 using high-strength bolts 13.
【０００７】油圧ジャッキ１０は、既設橋梁の主桁端の
遊間１５に挿入できるように、１００〜２００ｍｍ程度
の直径を有し、主桁１の腹板１ａの端に沿って上下方向
に延び、主桁１の上フランジ１ｂ近傍まで延びる、シリ
ンダを有する。これに対し、従来の油圧ジャッキ３は、
２００ｍｍを越える直径を有し、主桁端の遊間には挿入
できず、主桁１の下フランジ１ｃの下側に挿入される。
油圧ジャッキ１０が小径のため、必要ジャッキ容量を得
るために、支承取替専用ジャッキ装置９は複数本の油圧
ジャッキ１０を備えている。The hydraulic jack 10 has a diameter of about 100 to 200 mm and extends vertically along the end of the web 1a of the main girder 1 so that it can be inserted into the gap 15 at the end of the main girder of the existing bridge. The main girder 1 has a cylinder extending to the vicinity of the upper flange 1b. On the other hand, the conventional hydraulic jack 3
It has a diameter exceeding 200 mm and cannot be inserted into the play at the end of the main girder, but is inserted under the lower flange 1 c of the main girder 1.
Since the hydraulic jack 10 has a small diameter, the jack device 9 dedicated to support and replacement includes a plurality of hydraulic jacks 10 in order to obtain a required jack capacity.
【０００８】複数本の油圧ジャッキ１０は、第１のブラ
ケット１２に連結、固定される。第１のブラケット１２
は複数の油圧ジャッキ１０の並び方向に延びるプレート
１１を有する。プレート１１は、第１のブラケット１２
および油圧ジャッキ１０が主桁端の遊間１５に挿入され
た時、主桁１の腹板１ａに対して直交する方向に延び
る。プレート１１は、第２のブラケット１４を高力ボル
ト１３で連結するために設けられる。A plurality of hydraulic jacks 10 are connected and fixed to a first bracket 12. First bracket 12
Has a plate 11 extending in the direction in which the plurality of hydraulic jacks 10 are arranged. The plate 11 includes a first bracket 12
When the hydraulic jack 10 is inserted into the play 15 at the end of the main girder, the hydraulic jack 10 extends in a direction orthogonal to the abdominal plate 1 a of the main girder 1. The plate 11 is provided for connecting the second bracket 14 with the high-strength bolt 13.
【０００９】第２のブラケット１４は、水平面で切った
断面がＬ字状をしており上下方向に延びる２つのブラケ
ット１４ａ、１４ｂからなる。支承取替時、第２のブラ
ケット１４の２つのブラケット１４ａ、１４ｂで主桁１
の腹板１ａの端部を挟み、高力ボルト１３で２つのブラ
ケット１４ａ、１４ｂと主桁１の腹板１ａとを共締めす
ることにより、第２のブラケット１４と主桁１の腹板１
ａとは結合される。この場合、第２のブラケット１４の
２つのブラケット１４ａ、１４ｂと主桁１の腹板１ａに
は、予めボルト孔が穿設されている。第２のブラケット
１４の２つのブラケット１４ａ、１４ｂは、それぞれ、
第１のブラケット１２のプレート１１に、高力ボルト１
３で結合される。第２のブラケット１４の２つのブラケ
ット１４ａ、１４ｂと第１のブラケット１２のプレート
１１には、予めボルト孔が穿設されている。支承取替後
には、高力ボルト１３を外し、第２のブラケット１４の
２つのブラケット１４ａ、１４ｂを主桁１と第１のブラ
ケット１２から外す。これによって、支承取替専用ジャ
ッキ装置９は主桁１から外され、主桁１にはボルト孔が
残る。The second bracket 14 has two L-shaped brackets 14a and 14b extending in the vertical direction and having an L-shaped cross section taken along a horizontal plane. When the bearing is replaced, the main girder 1 is fixed to the two brackets 14a and 14b of the second bracket 14.
The two brackets 14a and 14b and the main girder 1 are fastened together with the high-strength bolts 13 between the end portions of the abdominal plate 1a.
is combined with a. In this case, bolt holes are formed in the two brackets 14a and 14b of the second bracket 14 and the abdominal plate 1a of the main girder 1 in advance. The two brackets 14a, 14b of the second bracket 14, respectively,
The high-strength bolt 1 is attached to the plate 11 of the first bracket 12.
3 are combined. Bolt holes are formed in the two brackets 14 a and 14 b of the second bracket 14 and the plate 11 of the first bracket 12 in advance. After the replacement of the bearing, the high-strength bolt 13 is removed, and the two brackets 14 a and 14 b of the second bracket 14 are removed from the main beam 1 and the first bracket 12. As a result, the jack device 9 dedicated to support and replacement is detached from the main girder 1, and a bolt hole remains in the main girder 1.
【００１０】つぎに、上記支承取替専用ジャッキ装置９
を用いた鋼橋の支承取替方法を説明する。支承取替専用
ジャッキ装置９を用いた鋼橋の支承取替方法は、複数の
シリンダー型油圧ジャッキ１０と油圧ジャッキ１０が固
定された第１のブラケット１２と第１のブラケット１２
に高力ボルト１３を用いて結合される第２のブラケット
１４とからなる支承取替専用ジャッキ装置９の、油圧ジ
ャッキ１０と第１のブラケット１２を鋼橋の遊間１５
（対向する主桁間のスペース）に配置して第２のブラケ
ット１４を第１のブラケット１２と主桁１の腹板１ａに
高力ボルト１３を用いて結合する工程と、油圧ジャッキ
１０により主桁１の端部を持ち上げる工程と、それまで
使用していた支承４を新しい支承と交換する工程と、油
圧ジャッキ１０により桁端を新しい支承の上におろす工
程と、第２のブラケット１４を第１のブラケット１２と
主桁１の腹板１ａから取外しついで油圧ジャッキ１０と
第１のブラケット１２を鋼橋の遊間１５から除去する工
程と、からなる。Next, the jack device 9 for exclusive use of the bearing replacement is provided.
Explains how to replace bearings on steel bridges. The method of replacing a steel bridge using the jack device 9 dedicated to the replacement of the bearing includes a plurality of cylinder type hydraulic jacks 10, a first bracket 12 to which the hydraulic jack 10 is fixed, and a first bracket 12.
The hydraulic jack 10 and the first bracket 12 of the jack device 9 for exclusive use of bearing replacement, which is composed of a second bracket 14 connected to the
(A space between the opposing main girders) to join the second bracket 14 to the first bracket 12 and the abdominal plate 1a of the main girder 1 using high-strength bolts 13, Lifting the end of the girder 1, replacing the bearing 4 used so far with a new bearing, lowering the girder end on the new bearing with the hydraulic jack 10, and attaching the second bracket 14 to the second bracket 14. 1) removing the hydraulic jack 10 and the first bracket 12 from the play 15 of the steel bridge by removing them from the bracket 12 and the web 1a of the main girder 1.
【００１１】この鋼橋の支承取替方法においては、図５
〜図９に示すような、主桁１に仮設ブラケット５を高力
ボルト６で取り付け、その下に油圧ジャッキ３をセット
することは行われない。支承取替専用ジャッキ装置９を
主桁１に結合する際、第２のブラケット１４は、第２の
ブラケット１４の２つのブラケット１４ａ、１４ｂ間に
主桁１の腹板１ａを挟み込んで高力ボルト１３を用いて
主桁１の腹板１ａに結合される。２つのブラケット１４
ａ、１４ｂは、また、第１のブラケット１２のプレート
１１に高力ボルト１３を用いて結合される。支承取替専
用ジャッキ装置９を除去する際には、高力ボルト１３を
外すことにより、第２のブラケット１４が第１のブラケ
ット１２と主桁１の腹板１ａから外れるので、油圧ジャ
ッキ１０と第１のブラケット１２を容易に鋼橋の遊間１
５から除去することができる。In this method of replacing a steel bridge, FIG.
9, the temporary bracket 5 is attached to the main girder 1 with the high-strength bolts 6, and the hydraulic jack 3 is not set therebelow. When the jack device 9 dedicated to support and replacement is connected to the main girder 1, the second bracket 14 is formed by sandwiching the abdominal plate 1 a of the main girder 1 between the two brackets 14 a and 14 b of the second bracket 14. 13 and is connected to the abdominal plate 1a of the main girder 1. Two brackets 14
a, 14b are also coupled to the plate 11 of the first bracket 12 using high-strength bolts 13. When removing the support-replacement-specific jack device 9, the high-strength bolt 13 is removed, so that the second bracket 14 is separated from the first bracket 12 and the abdominal plate 1 a of the main girder 1. The first bracket 12 can be easily attached to the steel bridge
5 can be removed.
【００１２】つぎに、鋼橋の支承取替専用ジャッキ装置
９とそれを用いた鋼橋の支承取替方法の作用を説明す
る。支承取替時、支承取替専用ジャッキ装置９の油圧ジ
ャッキ１０は、第１のブラケット１２とともに、主桁１
の端部の遊間１５に配置されるので、油圧ジャッキ１０
からの反力は、主桁１の前面１ａから最も離れた主桁１
の中央部にかかり、剪断抵抗面８（図８に示すように４
５度の斜めの面）の面積が大となり、剪断抵抗面に作用
する剪断応力が小になる。そのため、橋脚２を支承取替
用に補強する必要がない。Next, the operation of the jack device 9 dedicated to the replacement of the steel bridge bearing and the method of replacing the steel bridge bearing using the jack device 9 will be described. When the bearing is replaced, the hydraulic jack 10 of the jack device 9 dedicated to the replacement of the bearing, together with the first bracket 12, is connected to the main girder 1.
Of the hydraulic jack 10
Of the main girder 1 farthest from the front surface 1a of the main girder 1
And the shear resistance surface 8 (4 as shown in FIG. 8).
The area of the (5 ° oblique surface) becomes large, and the shear stress acting on the shear resistance surface becomes small. Therefore, it is not necessary to reinforce the pier 2 for replacement of the bearing.
【００１３】また、支承取替専用ジャッキ装置９の油圧
ジャッキ１０が主桁１の端部の遊間１５に配置されるの
で、油圧ジャッキ１０が支承４と干渉することはなく、
従来のように重量が大な仮設ブラケット５を主桁１に取
り付ける必要がなく、現場作業性がよくなる。また、第
１のブラケット１２と第２のブラケット１４とを分割し
ているので、１つ１つのブラケット１２、１４自体の重
量が小さくなり、かつ油圧ジャッキ１０および第１のブ
ラケット１２を遊間１５に配置する作業と第２のブラケ
ット１４を主桁１と第１のブラケット１２に結合する作
業とが別になり、現場作業性が向上する。Since the hydraulic jack 10 of the jack device 9 for exclusive use of the bearing replacement is arranged in the play 15 at the end of the main girder 1, the hydraulic jack 10 does not interfere with the bearing 4.
There is no need to attach a heavy temporary bracket 5 to the main girder 1 as in the prior art, and workability on site is improved. Further, since the first bracket 12 and the second bracket 14 are divided, the weight of each of the brackets 12 and 14 is reduced, and the hydraulic jack 10 and the first bracket 12 are moved to the play space 15. The work of arranging the work and the work of connecting the second bracket 14 to the main girder 1 and the first bracket 12 are separated from each other, so that the workability on site is improved.
【００１４】また、従来の仮設ブラケット５の場合は、
主桁１まわりの条件が橋梁によって異なるので、１つの
主桁１に対して用意した仮設ブラケット５を他の主桁あ
るいは他の橋梁に転用するのが困難なことが多く、結果
的に費用が掛かりすぎていたが、主桁１自体の端部構造
は何れの主桁、橋梁でも似ているので、本発明実施例の
支承取替専用ジャッキ装置９を他の主桁１、橋梁に転用
することができ、コストダウンとなる。In the case of the conventional temporary bracket 5,
Since the conditions around the main girder 1 differ depending on the bridge, it is often difficult to convert the temporary bracket 5 prepared for one main girder 1 to another main girder or another bridge, and as a result, costs are increased. Although it was excessively hung, the end structure of the main girder 1 itself is similar in any main girder and bridge, so the jack device 9 for exclusive use of the bearing replacement according to the embodiment of the present invention is converted to another main girder 1 and bridge. Cost can be reduced.
【００１５】[0015]
【発明の効果】請求項１の鋼橋の支承取替専用ジャッキ
装置および請求項２の支承取替専用ジャッキ装置を用い
た鋼橋の支承取替方法によれば、油圧ジャッキを主桁端
の遊間にセットするので、橋脚前面から離れた位置に配
置でき、橋脚に働く剪断応力度が小さくなり、支承取替
のために橋脚を補強しなくてよくなる。また、主桁の端
部に高力ボルトで支承取替専用ジャッキ装置を結合すれ
ばよいので、従来のような転用の難しい仮設ブラケット
を主桁に取り付ける必要がなくなり、支承取替専用ジャ
ッキ装置の他の主桁、橋梁への転用が容易であり、従来
に比べてコストダウンとなる。また、第２のブラケット
を主桁と第１のブラケットに高力ボルトで結合する構造
としたので、１つ１つのブラケットが軽量化され、従来
のような重量大の仮設ブラケットを取り扱う必要がな
く、現場作業性が向上する。According to the first and second embodiments of the present invention, the hydraulic jack is provided at the end of the main girder. Since the pier is set in the play space, it can be arranged at a position away from the front of the pier, the shear stress acting on the pier is reduced, and the pier does not have to be reinforced for replacement of the bearing. In addition, since it is only necessary to connect the jacking device dedicated to replacement of the bearing with the end of the main girder using a high-strength bolt, there is no need to attach a temporary bracket that is difficult to convert to the main girder as in the prior art. It can be easily converted to other main girders and bridges, resulting in lower costs than before. Further, since the second bracket is configured to be connected to the main girder and the first bracket with high-strength bolts, each bracket is reduced in weight, and there is no need to handle a heavy temporary bracket as in the conventional case. In addition, workability at the site is improved.
【図１】本発明実施例の鋼橋の支承取替専用ジャッキ装
置とそれを用いた支承取替方法における、支承取替専用
ジャッキ装置とその近傍の側面図である。FIG. 1 is a side view of a jack device dedicated to replacement of a steel bridge and a vicinity thereof in a jack device dedicated to replacing a steel bridge and a method of replacing a bearing using the same according to an embodiment of the present invention.
【図２】図１の支承取替専用ジャッキ装置とその近傍の
平面図である。FIG. 2 is a plan view of the jack device dedicated to replacement of the bearing of FIG. 1 and its vicinity.
【図３】図１の支承取替専用ジャッキ装置セット前また
は除去後の鋼橋と橋脚の斜視図である。FIG. 3 is a perspective view of a steel bridge and a pier before or after setting a jack device dedicated to replacement of a bearing in FIG. 1;
【図４】従来の支承取替方法の一例における、支承取替
用ジャッキとその近傍の側面図である。FIG. 4 is a side view of a bearing replacement jack and its vicinity in an example of a conventional bearing replacement method.
【図５】従来の支承取替方法のもう一例における、支承
取替用ジャッキとその近傍の側面図である。FIG. 5 is a side view of a bearing replacement jack and its vicinity in another example of the conventional bearing replacement method.
【図６】図５の構造の正面図である。6 is a front view of the structure of FIG.
【図７】図５の構造の斜視図である。FIG. 7 is a perspective view of the structure of FIG. 5;
【図８】図５の構造の問題を示す側面図である。FIG. 8 is a side view showing the problem of the structure of FIG.
【図９】図５の構造の問題を示す正面図である。FIG. 9 is a front view showing a problem of the structure of FIG. 5;
１ 主桁 １ａ 腹板 ２ 橋脚 ４ 支承 ８ 剪断抵抗面 ９ 支承取替専用ジャッキ装置 １０ 油圧ジャッキ（シリンダー型油圧ジャッキ） １１ プレート １２ 第１のブラケット １３ 高力ボルト １４ 第２のブラケット １５ 遊間 DESCRIPTION OF SYMBOLS 1 Main girder 1a Belly plate 2 Bridge pier 4 Bearing 8 Shear resistance surface 9 Jack device for exclusive replacement of bearing 10 Hydraulic jack (cylinder type hydraulic jack) 11 Plate 12 First bracket 13 High strength bolt 14 Second bracket 15
Claims (2)
ッキと、 油圧ジャッキの並び方向に延びるプレートを有し前記油
圧ジャッキが固定された第１のブラケットと、 前記第１のブラケットのプレートに高力ボルトを用いて
結合され主桁腹板に高力ボルトを用いて結合される第２
のブラケットと、 からなる鋼橋の支承取替専用ジャッキ装置。1. A plurality of cylinder-type hydraulic jacks arranged in parallel, a first bracket having a plate extending in a direction in which the hydraulic jacks are arranged, and a first bracket to which the hydraulic jack is fixed, and a high force applied to the plate of the first bracket. A second bolt connected to the main girder web using bolts
A dedicated jacking device for replacing bearings on steel bridges consisting of a bracket and.
油圧ジャッキが固定された第１のブラケットと前記第１
のブラケットに高力ボルトを用いて結合される第２のブ
ラケットとからなる支承取替専用ジャッキ装置の前記油
圧ジャッキと第１のブラケットを鋼橋の遊間に配置して
第２のブラケットを第１のブラケットと主桁の腹板に高
力ボルトを用いて結合し、 前記油圧ジャッキにより桁端を持ち上げ、 古い支承を新しい支承と交換し、 前記油圧ジャッキにより桁端を新しい支承の上におろ
し、 前記第２のブラケットを第１のブラケットと主桁の腹板
から取外し、ついで前記油圧ジャッキと第１のブラケッ
トを鋼橋の遊間から除去する、工程からなる支承取替専
用ジャッキ装置を用いた鋼橋の支承取替方法。2. A plurality of cylinder-type hydraulic jacks, a first bracket to which the hydraulic jacks are fixed, and the first bracket.
The hydraulic jack and the first bracket of the support-replacement-specific jack device, which is composed of a second bracket connected to the first bracket by using a high-strength bolt, are disposed in the play of the steel bridge, and the second bracket is connected to the first bracket. Using a high-strength bolt to connect the bracket and the main girder plate with high-strength bolts, lift the girder end with the hydraulic jack, replace the old bearing with a new bearing, and lower the girder end on the new bearing with the hydraulic jack; Removing the second bracket from the first bracket and the belly plate of the main girder, and then removing the hydraulic jack and the first bracket from the gap of the steel bridge using a jack device dedicated to replacement of a bearing, comprising: How to replace bridges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28680999A JP3907356B2 (en) | 1999-10-07 | 1999-10-07 | Steel bridge dedicated replacement device and steel bridge support replacement method using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28680999A JP3907356B2 (en) | 1999-10-07 | 1999-10-07 | Steel bridge dedicated replacement device and steel bridge support replacement method using it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001106484A true JP2001106484A (en) | 2001-04-17 |
| JP3907356B2 JP3907356B2 (en) | 2007-04-18 |
Family
ID=17709337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28680999A Expired - Fee Related JP3907356B2 (en) | 1999-10-07 | 1999-10-07 | Steel bridge dedicated replacement device and steel bridge support replacement method using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3907356B2 (en) |
Cited By (8)
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| JP2009019438A (en) * | 2007-07-13 | 2009-01-29 | Nippon Sharyo Seizo Kaisha Ltd | Jack receiver and method of replacing bearing of truss bridge |
| JP2016102298A (en) * | 2014-11-27 | 2016-06-02 | 株式会社竹中工務店 | Building raising structure |
| JP2018204419A (en) * | 2017-01-25 | 2018-12-27 | オリエンタル白石株式会社 | Bearing replacement method for existing concrete beam |
| CN110497168A (en) * | 2019-07-17 | 2019-11-26 | 国电重庆风电开发有限公司 | Cabin flexibly supports quick change method in a kind of restricted clearance |
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| CN112064524A (en) * | 2020-10-13 | 2020-12-11 | 上海同罡建筑工程有限公司 | Reinforcing structure and method for jacking box girder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019438A (en) * | 2007-07-13 | 2009-01-29 | Nippon Sharyo Seizo Kaisha Ltd | Jack receiver and method of replacing bearing of truss bridge |
| JP2016102298A (en) * | 2014-11-27 | 2016-06-02 | 株式会社竹中工務店 | Building raising structure |
| JP2018204419A (en) * | 2017-01-25 | 2018-12-27 | オリエンタル白石株式会社 | Bearing replacement method for existing concrete beam |
| JP6995584B2 (en) | 2017-01-25 | 2022-01-14 | オリエンタル白石株式会社 | Bearing replacement method for existing concrete girders |
| CN110497168A (en) * | 2019-07-17 | 2019-11-26 | 国电重庆风电开发有限公司 | Cabin flexibly supports quick change method in a kind of restricted clearance |
| CN110497168B (en) * | 2019-07-17 | 2024-01-02 | 国电重庆风电开发有限公司 | Quick replacement method for cabin elastic support in limited space |
| CN111252705A (en) * | 2020-02-12 | 2020-06-09 | 鲁开友 | Hanging equipment for multi-truss type ultra-wide bridge construction |
| CN111252705B (en) * | 2020-02-12 | 2021-05-25 | 甘肃博睿交通重型装备制造有限公司 | Moving mechanism of hanging equipment for multi-truss type ultra-wide bridge construction |
| CN112064524A (en) * | 2020-10-13 | 2020-12-11 | 上海同罡建筑工程有限公司 | Reinforcing structure and method for jacking box girder |
| CN112924008A (en) * | 2021-01-18 | 2021-06-08 | 常州市亨托电子衡器有限公司 | Weighing module convenient to on-site transformation |
| CN112924008B (en) * | 2021-01-18 | 2022-09-06 | 常州市亨托电子衡器有限公司 | Weighing module convenient for field transformation |
| CN114753259A (en) * | 2022-04-28 | 2022-07-15 | 中铁七局集团有限公司 | Alignment leveling method for precast beam erection construction |
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|---|---|
| JP3907356B2 (en) | 2007-04-18 |
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