JPH05148817A - Construction of pc bridge - Google Patents
Construction of pc bridgeInfo
- Publication number
- JPH05148817A JPH05148817A JP34217691A JP34217691A JPH05148817A JP H05148817 A JPH05148817 A JP H05148817A JP 34217691 A JP34217691 A JP 34217691A JP 34217691 A JP34217691 A JP 34217691A JP H05148817 A JPH05148817 A JP H05148817A
- Authority
- JP
- Japan
- Prior art keywords
- bridge
- concrete
- girder block
- bridge girder
- steels
- 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]
【産業上の利用分野】この発明は、ＰＣ橋の構築工法、
特にＰＣ橋桁を地上から吊り上げて、接続一体化するよ
うにした工法に関するものである。This invention relates to a construction method for a PC bridge,
In particular, it relates to a construction method in which the PC bridge girders are lifted from the ground so that they can be connected and integrated.
【０００２】[0002]
【従来の技術】従来のＰＣ橋の構築方法は、最終的な架
設位置で型枠を組立ててコンクリートを打設することに
より、現場打ちコンクリートの橋桁を架設するのが一般
的であり、このためコンクリートの強度が得られるまで
はその重量を支えるために、支保工を必要とするもので
あった。2. Description of the Related Art In the conventional construction method of a PC bridge, it is common to assemble a bridge girder made of cast-in-place concrete by assembling a formwork and placing concrete at the final erection position. Until the strength of concrete was obtained, supporting work was required to support the weight of the concrete.
【０００３】この支保工は地上より組み立てるもの、あ
るいは橋脚上を移動する移動支保工などが用いられてい
る。As this support work, a support work that is assembled from the ground or a mobile support work that moves on a pier is used.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の工法では、
地上から高所に橋梁を架設する場合、支保工に関わる工
費が大きくなるとともに、支保工の組立・解体に多大の
日数を要するという問題があり、また、支保工、型枠
工、鉄筋組立工、コンクリート打設工などの作業を高所
で行うため危険であった。In the above conventional method,
When a bridge is erected from the ground to a high place, the construction cost for supporting work is large, and it takes a lot of days to assemble and disassemble the supporting work, and also the supporting work, the formwork, and the reinforcing bar assembly work. However, it was dangerous because the work such as concrete pouring work was done at a high place.
【０００５】[0005]
【課題を解決するための手段】この発明は、先行して架
設されたＰＣ橋１の前方における後行ＰＣ橋の架設地点
直下の地上でコンクリート製橋桁ブロック２を製作し、
先行ＰＣ橋１上及びその前方に樹立した左右一対の橋脚
３，３上に吊架台４，５を設置し、吊架台４，５に設け
た油圧ジャッキ７により橋桁ブロック２を所定位置まで
吊上げ、橋脚３，３間に架設した梁９上に支持すると共
に、この橋桁ブロック２と先行橋桁２’の前後方向に埋
設したＰＣ鋼材６，６を接続し、相互の継目間隙１０に
現場打ちコンクリートを打設し、その硬化後ＰＣ鋼材６
を緊張して一体することを特徴とするＰＣ橋の構築工法
を提案するものである。According to the present invention, a concrete bridge girder block 2 is manufactured on the ground just below the erection point of a trailing PC bridge in front of the PC bridge 1 erected in advance.
The suspension stands 4,5 are installed on the pair of left and right piers 3,3 established in front of the preceding PC bridge 1 and in front of it, and the bridge girder block 2 is lifted to a predetermined position by the hydraulic jacks 7 provided on the suspension stands 4,5. While supporting on the beam 9 erected between the piers 3 and 3, this bridge girder block 2 and the PC steel materials 6 and 6 embedded in the front and rear direction of the preceding bridge girder 2'are connected, and in-situ concrete is poured into the mutual joint gap 10. PC steel 6 after casting and hardening
It proposes a construction method for a PC bridge, which is characterized by tensioning and uniting.
【０００６】[0006]
【作用】地上で製作された橋桁ブロック２を油圧ジャッ
キ７を用いて所定の位置に吊り上げて架設するため、支
保工の組立解体が不要で、型枠工、鉄筋組立工、コンク
リート打設工などの高所作業が少なくなる。[Operation] Since the bridge girder block 2 manufactured on the ground is hung and erected at a predetermined position by using the hydraulic jack 7, there is no need for disassembly and disassembly of the supporting work, and formwork, rebar assembly, concrete placing, etc. Work in high places is reduced.
【０００７】[0007]
【実施例】先行して架設されたＰＣ橋１の前方における
後行ＰＣ橋の架設地点直下の地上でコンクリート製橋桁
ブロック２を製作すると共に、先行ＰＣ橋１上及びその
前方に樹立した左右一対の橋脚３，３上に吊架台４，５
を設置する。[Example] A concrete bridge girder block 2 is manufactured on the ground just below the erection point of a trailing PC bridge in front of the preceding PC bridge 1, and a pair of left and right erected on and in front of the preceding PC bridge 1. Suspension stand 4,5 on the piers 3 and 3 of
Set up.
【０００８】橋桁ブロック２には、図４に示すように予
めその前後方向にシースに挿通されたＰＣ鋼材６を埋設
しておく。In the bridge girder block 2, as shown in FIG. 4, a PC steel material 6 which is inserted through a sheath in the front-back direction is embedded in advance.
【０００９】そしてこの橋桁ブロック２を、図１〜図３
に示すように吊架台４，５に設けた油圧ジャッキ７によ
りワイヤー等の吊持材８を介して所定位置まで吊上げ、
図５に示すようにその一部を橋脚３，３間に架設した梁
９上に支持すると共に、図４に示すように橋桁ブロック
２と先行橋桁ブロック２’に埋設したＰＣ鋼材６，６の
端部を接続し、相互の継目間隙１０の周囲に型枠を設置
して現場打ちコンクリートを打設し、その硬化後橋桁ブ
ロック２のＰＣ鋼材６を緊張してプレストレスを導入
し、橋桁ブロック２と先行橋桁ブロック２’同士を一体
する。The bridge girder block 2 is shown in FIGS.
As shown in FIG. 3, the hydraulic jacks 7 provided on the suspension bases 4 and 5 hoist it up to a predetermined position via a suspension member 8 such as a wire.
As shown in FIG. 5, a part of it is supported on a beam 9 erected between the bridge piers 3 and 3, and as shown in FIG. 4, the PC steel materials 6 and 6 embedded in the bridge girder block 2 and the preceding bridge girder block 2 ′. After connecting the ends, installing a formwork around the mutual joint gap 10 and pouring in-place concrete, after hardening, the PC steel material 6 of the bridge girder block 2 is tensioned to introduce prestress, and the bridge girder block 2 and the preceding bridge girder block 2'are integrated.
【００１０】橋桁ブロック２の架設後、図６に示すよう
にその両側部に張出し床版１１を設置し、順次上記施工
を繰り返し実施する。After the bridge girder block 2 has been erected, as shown in FIG. 6, overhanging floor slabs 11 are installed on both sides of the bridge girder block 2 and the above construction is sequentially repeated.
【００１１】[0011]
【発明の効果】以上の通りこの発明によれば、地上で予
め製作した橋桁ブロックを吊り上げるので、高所作業が
少なくて危険作業を軽減することができる。As described above, according to the present invention, since the bridge girder block preliminarily manufactured on the ground is hoisted, it is possible to reduce dangerous work by reducing the work at high places.
【００１２】また、橋脚などの下部構造の施工と併行し
て橋桁ブロックを事前に製作でき、また従来のように支
保工を用いないため工期を短縮することができ、工費も
節減することが可能となる。Further, the bridge girder block can be manufactured in advance in parallel with the construction of the substructure such as a bridge pier, and the construction period can be shortened because the support work is not used unlike in the past, and the construction cost can be reduced. Becomes
【図１】この発明における橋桁ブロックの吊り上げ状態
を示す側面図。FIG. 1 is a side view showing a suspended state of a bridge girder block according to the present invention.
【図２】この発明における橋桁ブロックの橋脚部での吊
り上げ状態を示す正面図。FIG. 2 is a front view showing a state in which the bridge girder block according to the present invention is lifted at a bridge pier.
【図３】この発明における橋桁ブロックの先行橋上での
吊り上げ状態を示す正面図。FIG. 3 is a front view showing a state in which the bridge girder block according to the present invention is lifted on the preceding bridge.
【図４】この発明に係る橋桁ブロック相互の接合状態を
示す側面図。FIG. 4 is a side view showing a joined state of the bridge girder blocks according to the present invention.
【図５】この発明における橋桁ブロックの架設状態を示
す正面図。FIG. 5 is a front view showing a bridge girder block in a erected state according to the present invention.
【図６】この発明における橋桁ブロックの架設完了状態
を示す正面図。FIG. 6 is a front view showing a state in which the bridge girder block according to the present invention has been erected.
１ ＰＣ橋 ２ 橋桁ブロック ２’ 先行橋桁ブロック ３ 橋脚 ４ 吊架台 ５ 吊架台 ６ ＰＣ鋼材 ７ 油圧ジャッキ ８ 吊持材 ９ 梁 １０ 継目間隙 １１ 張出し床版 1 PC bridge 2 Bridge girder block 2'Preceding bridge girder block 3 Pier 4 Suspension platform 5 Suspension platform 6 PC steel material 7 Hydraulic jack 8 Suspension material 9 Beam 10 Seam gap 11 Overhang floor slab
Claims (1)
る後行ＰＣ橋の架設地点直下の地上でコンクリート製橋
桁ブロックを製作し、先行ＰＣ橋上及びその前方に樹立
した左右一対の橋脚上に吊架台を設置し、これらの吊架
台に設けた油圧ジャッキにより前記橋桁ブロックを所定
位置まで吊上げ、前記橋脚間に架設した梁上に設置する
と共に、この橋桁ブロックと先行橋桁の前後方向に埋設
したＰＣ鋼材を接続し、相互の継目間隙に現場打ちコン
クリートを打設し、その硬化後前記ＰＣ鋼材を緊張して
一体することを特徴とするＰＣ橋の構築工法。1. A concrete bridge girder block is manufactured on the ground just below the erection point of a trailing PC bridge in front of the preceding PC bridge, and on the preceding PC bridge and on the pair of left and right piers established in front of it. The suspension girders are installed, and the bridge girder blocks are hung up to a predetermined position by the hydraulic jacks provided on these suspension girders, installed on the beams installed between the bridge piers, and embedded in the front and rear direction of this bridge girder block and the preceding bridge girder. A construction method for a PC bridge characterized in that PC steel materials are connected, in-situ concrete is poured into the joint gaps, and after hardening, the PC steel materials are tensioned and integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34217691A JPH05148817A (en) | 1991-11-30 | 1991-11-30 | Construction of pc bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34217691A JPH05148817A (en) | 1991-11-30 | 1991-11-30 | Construction of pc bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05148817A true JPH05148817A (en) | 1993-06-15 |
Family
ID=18351708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34217691A Pending JPH05148817A (en) | 1991-11-30 | 1991-11-30 | Construction of pc bridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05148817A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030070215A (en) * | 2002-02-21 | 2003-08-29 | 박창희 | apparatus for lifting using a construction or disjoint of bridge and a method of construction using the same |
| KR100500382B1 (en) * | 2002-10-17 | 2005-07-12 | 주식회사 삼표 | Construction method and connection structure for construction continuous of precast girder |
| JP2008274586A (en) * | 2007-04-26 | 2008-11-13 | Kajima Corp | Pillar head construction method |
| KR101026012B1 (en) * | 2010-11-25 | 2011-03-30 | (주) 한국비계 | Bridge deck dismantling method by means of united pulling jack and pier |
-
1991
- 1991-11-30 JP JP34217691A patent/JPH05148817A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030070215A (en) * | 2002-02-21 | 2003-08-29 | 박창희 | apparatus for lifting using a construction or disjoint of bridge and a method of construction using the same |
| KR100500382B1 (en) * | 2002-10-17 | 2005-07-12 | 주식회사 삼표 | Construction method and connection structure for construction continuous of precast girder |
| JP2008274586A (en) * | 2007-04-26 | 2008-11-13 | Kajima Corp | Pillar head construction method |
| KR101026012B1 (en) * | 2010-11-25 | 2011-03-30 | (주) 한국비계 | Bridge deck dismantling method by means of united pulling jack and pier |
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