JP4780501B2 - Telescopic connection structure between bridge and earthwork - Google Patents

Telescopic connection structure between bridge and earthwork Download PDF

Info

Publication number
JP4780501B2
JP4780501B2 JP2007081971A JP2007081971A JP4780501B2 JP 4780501 B2 JP4780501 B2 JP 4780501B2 JP 2007081971 A JP2007081971 A JP 2007081971A JP 2007081971 A JP2007081971 A JP 2007081971A JP 4780501 B2 JP4780501 B2 JP 4780501B2
Authority
JP
Japan
Prior art keywords
floor slab
bridge
earthwork
precast concrete
connection structure
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.)
Active
Application number
JP2007081971A
Other languages
Japanese (ja)
Other versions
JP2008240348A (en
Inventor
慎哉 吉松
Original Assignee
株式会社ピーエス三菱
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社ピーエス三菱 filed Critical 株式会社ピーエス三菱
Priority to JP2007081971A priority Critical patent/JP4780501B2/en
Publication of JP2008240348A publication Critical patent/JP2008240348A/en
Application granted granted Critical
Publication of JP4780501B2 publication Critical patent/JP4780501B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)

Description

本発明は、温度変化やコンクリートのクリープ、乾燥収縮による橋梁の伸縮を吸収させるために橋梁と土工部分との間に設ける伸縮連結構造に関する。   The present invention relates to a telescopic connection structure provided between a bridge and an earthwork portion in order to absorb the expansion and contraction of the bridge due to temperature change, concrete creep, and drying shrinkage.

一般に、橋桁の温度変化等による伸縮を吸収するために、橋桁と橋台との間に伸縮装置を設けていたが、伸縮装置が橋桁と橋台との隙間にあると、車両が通過する際にショックが発生して乗員に不快感を与えるとともに、騒音及び振動の発生による環境悪化が問題となっていた。   Generally, in order to absorb the expansion and contraction due to temperature changes of the bridge girder, an expansion device is provided between the bridge girder and the abutment. However, if the expansion device is in the gap between the bridge girder and the abutment, a shock will occur when the vehicle passes. Has caused discomfort to the passengers, and environmental degradation due to the generation of noise and vibration has been a problem.

このような問題を解決するものとして、従来、橋梁から土工部分上に伸びる延長床版を設け、その上長床版の先端と、土工部分上に設置した固定床版との間に伸縮装置を介在させたもの、即ち伸縮装置を橋梁と土工部分の間ではなく、土工部分上に置くようにしたものが開発されている（例えば特許文献１及び２）。
特開２００６−３０７４７号公報 特開２００６−３２８８６７号公報 In order to solve such problems, conventionally, an extended floor slab extending from the bridge to the earthwork part is provided, and an extension device is installed between the top of the upper long slab and the fixed floor slab installed on the earthwork part. An intervening device, that is, a device in which the expansion / contraction device is placed not on the bridge and the earthwork portion but on the earthwork portion has been developed (for example, Patent Documents 1 and 2).
JP 2006-30747 A JP 2006-328867 A

上述した従来の伸縮連結構造にあっては、延長床版の土工部分における滑動を許容する必要上及び土工部分の沈下においても平坦性を保つ必要上などの理由から、延長床版下にコンクリート製の底版を設置している。しかし、土工部分の沈下や不陸の発生は殆どの場合これを防止することができず、補修が必要となる場合が発生する。   In the above-described conventional expansion and contraction connection structure, it is necessary to allow sliding in the earthwork part of the extended floor slab and to maintain flatness even in the settlement of the earthwork part. The bottom plate is installed. However, the subsidence or unevenness of the earthwork part cannot be prevented in most cases, and repair may be required.

このように補修が必要となった場合や、既に使用に供されている既設道路における橋梁と土工部間に新たに上述した伸縮連結構造を設置する場合には、コンクリート製の底版を造成するために長時間を要し、長時間に亘る道路閉鎖を余儀なくされるという問題がある。   When repairs are required in this way, or when the above-mentioned telescopic connection structure is newly installed between a bridge and an earthwork section on an existing road that is already in use, to create a concrete bottom slab There is a problem that it takes a long time to close the road for a long time.

また、長時間の道路完全閉鎖を防止できるものとして、延長床版をその幅員方向を複数に分割した形状のプレキャストコンクリート版を幅員方向に並べて設置することにより、道路を完全閉鎖することなく、部分的に補修を可能としたものも存在するが、これらの従来の構造にあっても、延長床版の道路軸方向の長さは、その全長又はそれに近い長さが一体の剛構造となっているため、活荷重による橋梁の曲げや、土工部分に沈下や不陸が生じた際の車両通行等によって延長床版に曲げ力が作用し、段差が生じたり、ひび割れが発生したりするという問題がある。
本発明は、このような従来の問題に鑑み、延長床版下の底版施工が不要となり、短時間でしかも低コストにて補修及び既設道路に対する新規施工が可能となり、沈下や不陸が生じた場合や橋梁に対する活荷重による曲がりに対しても、極端な段差を生じさせずに滑らかな状態で順応する橋梁と土工部分の伸縮連結構造の提供を目的としてなされたものである。 In addition, it is possible to prevent the complete closure of the road for a long time by installing precast concrete slabs with the shape of the extended floor slab divided into a plurality of width directions side by side in the width direction, without completely closing the road. However, even in these conventional structures, the length of the extended floor slab in the direction of the road axis is a rigid structure in which the entire length or a length close thereto is an integral structure. Therefore, there is a problem that bending force acts on the extended floor slab due to bending of the bridge due to live load, vehicle traffic, etc. when subsidence or unevenness occurs in the earthwork part, resulting in steps or cracks There is.
In view of such a conventional problem, the present invention eliminates the need for bottom slab construction under an extended floor slab, enables repair and new construction on existing roads in a short time and at low cost, and causes subsidence and unevenness. The purpose of the present invention is to provide a stretchable connection structure between the bridge and the earthwork portion that adapts smoothly without causing an extreme step even when bending due to live load on the case or the bridge.

上述の如き従来の問題を解決し、所期の目的を達成するための請求項１に記載する発明の特徴は、橋台に支持された橋梁端部から、該橋台背面の土工路盤上に延長された延長床版を有し、該延長床版の先端を、前記土工路盤上に設置した固定床版に一体成型された延長床版受け部上に滑動可能に載荷させ、前記固定床版と延長床版との間に伸縮装置を備えてなる橋梁と土工部分の伸縮連結構造において、前記延長床版は、その道路軸方向の全長を複数に分割した形状の延長床版用プレキャストコンクリート版をもって構成し、該プレキャストコンクリート版間を非接着の突合せ接合構造とし、該プレキャストコンクリート版間を道路軸方向に向けたアンボンドＰＣ緊張材をもって緊張することによって連結したことにある。   The feature of the invention described in claim 1 for solving the conventional problems as described above and achieving the intended object is that the bridge end supported on the abutment is extended on the earthwork roadbed on the back of the abutment. An extended floor slab, and the end of the extended floor slab is slidably loaded on an extended floor slab receiving portion integrally formed with a fixed floor slab installed on the earthwork roadbed, and extended with the fixed floor slab In the expansion and contraction connection structure of the bridge and earthwork part provided with an expansion device between the floor slab, the extension floor slab is composed of a precast concrete plate for an extended floor slab whose shape is divided into a plurality of road lengths in the road axis direction. The precast concrete slabs have a non-adhesive butt-joint structure, and the precast concrete slabs are connected by being tensioned with an unbonded PC tendon oriented in the road axial direction.

請求項２に記載する発明の特徴は、前記請求項１の構成に加え、前記延長床版を構成する各プレキャストコンクリート版間にゴム状の弾性目地材を介在させていることにある。   A feature of the invention described in claim 2 is that, in addition to the structure of claim 1, a rubber-like elastic joint material is interposed between the precast concrete plates constituting the extended floor slab.

請求項３に記載する発明の特徴は、前記請求項１又は２のいずれか１の請求項の構成に加え、前記延長床版を構成する最も橋梁端部側に位置する最橋梁寄り端部側プレキャストコンクリート版と橋梁上面床版とは鉄筋によって連結させ、該最橋梁寄り端部側プレキャストコンクリート版には、その上面に開口させたＰＣ緊張材端部定着用の凹部を設け、該凹部内にて前記アンボンドＰＣ緊張材の一端を定着させていることにある。   The feature of the invention described in claim 3 is that, in addition to the configuration of claim 1 or 2, the end side closer to the most bridge located on the most bridge end side constituting the extended floor slab The precast concrete slab and the bridge top floor slab are connected by a reinforcing bar. The precast concrete slab near the end of the bridge is provided with a recess for fixing the end of the PC tendon material opened on the top surface. In other words, one end of the unbonded PC tendon is fixed.

請求項４に記載する発明の特徴は、前記請求項１〜３のいずれか１の請求項の構成に加え、橋台背面の土工路盤上面と前記延長床版との間には合成樹脂シート及び／又は砂層、及び裏込めモルタルを介在させていることにある。   A feature of the invention described in claim 4 is that, in addition to the structure of any one of claims 1 to 3, a synthetic resin sheet and / or a gap between the upper surface of the earthwork roadbed on the back of the abutment and the extended floor slab Alternatively, a sand layer and a backfill mortar are interposed.

請求項５に記載する発明の特徴は、前記請求項１〜４のいずれか１の請求項の構成に加え、前記各延長床版用プレキャストコンクリート版は、道路の幅員方向の全幅に至る長さを一体形成していることにある。   The feature of the invention described in claim 5 is that the length of the precast concrete slab for each extended floor slab reaches the full width in the width direction of the road in addition to the configuration of any one of the claims 1 to 4. Is formed integrally.

本発明においては、請求項１のように、延長床版を、その道路軸方向の全長を複数に分割した形状の延長床版用プレキャストコンクリート版をもって構成し、該プレキャストコンクリート版間を非接着の突合せ接合構造とし、該プレキャストコンクリート版間を道路軸方向に向けたアンボンドＰＣ緊張材をもって緊張することによって連結したことにより、土工部分の路盤の沈下や不陸の発生、更には活荷重による橋梁の屈伸の繰り返しに対して、柔軟にしかも局部的に急激な折れ曲がり段差が生じることなく順応することとなり、従来のようにひび割れなどの損傷が発生せず、車の走行性を大きく損なわない。   In the present invention, as in claim 1, the extended floor slab is constituted by a precast concrete slab for an extended floor slab having a shape in which the entire length in the road axis direction is divided into a plurality, and the precast concrete slabs are not bonded. By connecting the precast concrete slabs by tensioning them with unbonded PC tension material directed in the direction of the road axis, subsidence and unevenness of the roadbed in the earthwork part, and further, It adapts flexibly and flexibly without local sharply bending steps, and does not cause damage such as cracks as in the prior art, and does not significantly impair the running performance of the vehicle.

また、請求項２のように、延長床版を構成する各プレキャストコンクリート版間にゴム状の弾性目地材を介在させることにより、プレキャストコンクリート版間のヒンジ構造が柔軟なものとなり、より大きな曲げに滑らかに順応することとなる。   Further, as described in claim 2, by interposing the rubber-like elastic joint material between the precast concrete plates constituting the extended floor slab, the hinge structure between the precast concrete plates becomes flexible, so that the bending is larger. It will adapt smoothly.

請求項３のように、延長床版を構成する最も橋梁端部側に位置する最橋梁寄り端部側プレキャストコンクリート版と橋梁上面床版とは鉄筋によって連結させ、該最橋梁寄り端部側プレキャストコンクリート版には、その上面に開口させたＰＣ緊張材端部定着用の凹部を設け、該凹部内にて前記アンボンドＰＣ緊張材の一端を定着させることにより、延長床版の組み立てを容易且つ迅速になし得、既設道路における伸縮連結構造の新設や補修に際し、道路閉鎖時間を短縮できる。   As described in claim 3, the precast concrete plate closest to the bridge and located on the most bridge end side constituting the extended floor slab is connected to the bridge upper surface floor slab by a reinforcing bar, and the precast concrete end precast side The concrete plate is provided with a concave portion for fixing the end portion of the PC tendon material opened on the upper surface thereof, and one end of the unbonded PC tendon material is fixed in the concave portion, so that the extension floor slab can be assembled easily and quickly. The road closure time can be shortened when a telescopic connection structure is newly installed or repaired on an existing road.

請求項４のように、橋台背面の土工路盤上面と前記延長床版との間には合成樹脂シート及び／又は砂層、及び裏込めモルタルを介在させることにより、橋梁の伸縮にスムーズに順応して移動できる。   As in claim 4, a synthetic resin sheet and / or a sand layer and a backfill mortar are interposed between the upper surface of the earthwork roadbed on the back of the abutment and the extended floor slab, thereby smoothly adapting to the expansion and contraction of the bridge. I can move.

更に請求項５のように、各延長床版用プレキャストコンクリート版は、道路の幅員方向の全幅に至る長さを一体形成することにより、施工現場における作業を少なくでき、より短時間での新設や取り換え補修作業ができる。   Further, as in claim 5, each precast concrete slab for an extended floor slab is formed integrally with a length that reaches the entire width in the width direction of the road, so that the work at the construction site can be reduced, and a new construction can be performed in a shorter time. Replacement repair work is possible.

次に本発明の好適な実施形態を図面に基づいて具体的に説明する。   Next, preferred embodiments of the present invention will be specifically described with reference to the drawings.

図１は本発明を実施した伸縮連結構造の一例の全体の概略を示しており、図において符号１は橋桁、２は橋梁上面の床版、３は橋台である。橋台３には桁受け部３ａが段状に形成されており、その上面に支承部材４を介して橋桁１が支持されている。橋台３の桁受け部前面に立ち上げた衝立部３ｂの頂面と橋桁１の上面の切欠き凹部１ａに跨らせてプレキャストコンクリート製の枕版５が掛け渡されている。この枕版５はそのアンカーボルト６によって橋桁１に固定され、橋台３の上面との間にはゴム状弾性材からなる滑り用パッド７が介在され、橋桁の伸縮を拘束しないようになっている。尚、図中符号８はクッション材、９は伸縮材である。   FIG. 1 shows an overall outline of an example of a telescopic connection structure embodying the present invention. In the figure, reference numeral 1 is a bridge girder, 2 is a floor slab on the bridge upper surface, and 3 is an abutment. The abutment 3 is formed with a girder receiving portion 3a in a step shape, and the bridge girder 1 is supported on the upper surface of the abutment 3 via a support member 4. A pillow plate 5 made of precast concrete is stretched across the top surface of the partition portion 3 b raised on the front surface of the beam receiving portion of the abutment 3 and the notch recess 1 a on the upper surface of the bridge beam 1. The pillow plate 5 is fixed to the bridge girder 1 by the anchor bolts 6, and a sliding pad 7 made of a rubber-like elastic material is interposed between the upper surface of the abutment 3 so as not to restrain expansion and contraction of the bridge girder. . In the figure, reference numeral 8 is a cushion material, and 9 is an elastic material.

床版３の端部には、橋台背面の土工部分上面に延長させた延長床版１０が一体的に備えられている。この延長床版１０は枕版５上面を経て土工部分上面に伸びており、その先端は、土工部分の路面上に設置した固定床版１１の片側に段状に形成された延長床版受け部１１ａ上にゴム状弾性材からなる滑り用パッド１２を介して載せられている。   An extended floor slab 10 is integrally provided at the end of the floor slab 3 so as to extend to the upper surface of the earthwork portion on the back of the abutment. The extended floor slab 10 extends to the upper surface of the earthwork portion through the upper surface of the pillow plate 5, and the front end of the extended floor slab is formed in a step shape on one side of the fixed floor slab 11 installed on the road surface of the earthwork portion. It is placed on 11a via a sliding pad 12 made of a rubber-like elastic material.

延長床版１０の先端面１０ａと対向する固定床版１１の立ち上がり面１１ｂとの間には橋梁の温度変化伸縮が吸収できるだけの間隔ａが設けられており、その間隔を跨ぐ配置に伸縮装置１３が設置されている。尚、この伸縮装置１３は間隔ａを跨ぐ構造のもの他、間隔ａ内に収容される伸縮目地状の伸縮装置であっても良い。   A space a is provided between the leading end surface 10a of the extended floor slab 10 and the rising surface 11b of the fixed floor slab 11 facing the bridge so that the temperature change expansion and contraction of the bridge can be absorbed. Is installed. In addition, this expansion-contraction apparatus 13 may be an expansion / contraction expansion / contraction apparatus accommodated in the space | interval a other than the thing straddling the space | interval a.

延長床版１０は、その全体の道路軸方向を複数に分割した形状の複数のプレキャストコンクリート版１５，１５……をもって構成されている。これらのプレキャストコンクリート版１５は、それぞれ道路幅員の全幅に亘って一定成型されており、両端には地覆１６が一体に備えられている。   The extended floor slab 10 is composed of a plurality of precast concrete slabs 15, 15... Having a shape obtained by dividing the entire road axis direction into a plurality of sections. These precast concrete slabs 15 are each molded over the entire width of the road width, and ground covers 16 are integrally provided at both ends.

各プレキャストコンクリート版１５間にはゴム状の弾性目地材１７が介在されて非接着の突合せ接合構造とし、延長床版１０の道路軸方向に向けて全域に跨らせて肉厚内に挿通したＰＣ緊張材１８，１８……をもって緊張することにより一体化されている。このＰＣ緊張材１８にはアンボンドケーブルが使用されている。このようにして弾性目地材１７を介在させアンボンドケーブルからなるＰＣ緊張材１８による緊張によって一体化させることにより、各プレキャストコンクリート版１５，１５間をヒンジ結合状態としている。   A rubber-like elastic joint material 17 is interposed between the precast concrete slabs 15 to form a non-adhesive butt joint structure, and is inserted into the wall thickness across the entire region in the road axis direction of the extended floor slab 10. It is integrated by tensioning with PC tension members 18, 18. An unbonded cable is used for the PC tendon 18. In this way, the elastic joint material 17 is interposed and integrated by tension by the PC tension material 18 made of an unbonded cable, so that the precast concrete plates 15 and 15 are hingedly connected.

ＰＣ緊張材１８による緊張は、最も橋梁端部側に位置する最橋梁寄り端部側プレキャストコンクリート版１５ａに、その上面に開口させたＰＣ緊張材端部定着用の所要数の凹部２０，２０……を設け、各凹部２０内にＰＣ緊張材挿通孔を開口させ、そのＰＣ緊張材挿通孔に通したＰＣ緊張材１８を凹部２０内にて定着具２１をもって定着させ、該ＰＣ緊張材１８の他端側は、延長床版１０の最先端側に位置する最先端側プレキャストコンクリート版１５ｂの端面に形成した凹部２２内にて定着具２３により定着させている。尚、図中符号２０ａは定着作業の後に凹部２０の開口部開口を閉鎖する蓋である
また、上記最橋梁寄り端部側プレキャストコンクリート版１５ａには、内部に埋設した多数の連結用鉄筋２４を橋梁側端面に突出させておき、橋梁上面の床版２内に埋設する鉄筋２６とオーバーラップさせてコンクリートを打設することにより床版２を構築することによって延長床版１０と橋梁上面の床版２とを一体化させている。尚、延長床版１０と床版２との一体化は、鉄筋同士をオーバーラップさせる他、鉄筋間を継ぎ手によって連結させることにより行ってもよい。 The tension due to the PC tendon 18 is the required number of recesses 20, 20 for fixing the end of the PC tendon that is opened on the upper surface of the precast concrete plate 15 a closest to the bridge end located on the most bridge end side. ..., a PC tension material insertion hole is opened in each recess 20, and the PC tension material 18 passed through the PC tension material insertion hole is fixed by the fixing tool 21 in the recess 20, so that the PC tension material 18 The other end is fixed by a fixing tool 23 in a recess 22 formed on the end surface of the most advanced precast concrete plate 15b located on the most advanced side of the extended floor slab 10. Reference numeral 20a in the figure is a lid that closes the opening of the recess 20 after the fixing operation. Further, the precast concrete slab 15a near the end of the bridge has a large number of connecting reinforcing bars 24 embedded therein. The floor slab 2 and the floor of the bridge upper surface are constructed by projecting the bridge side end face and building the floor slab 2 by overlapping the reinforcing bars 26 embedded in the floor slab 2 on the bridge upper surface and placing concrete. The plate 2 is integrated. The extension floor slab 10 and the floor slab 2 may be integrated by overlapping the reinforcing bars or connecting the reinforcing bars with a joint.

枕版５と固定床版１１との間の延長床版１０の下には、突き固め土工路盤３０上に敷設した砂層３１、その上に敷設したビニールシートを使用した縁切り用シート３２、更にその上にあって各プレキャストコンクリート版１５の設置に際してその下面の空隙を埋めるために充填したモルタルからなるグラウト層３３があり、その上に延長床版１０が載荷されている。   Under the extended floor slab 10 between the pillow plate 5 and the fixed floor slab 11, a sand layer 31 laid on the tamped earthwork roadbed 30, a sheet 32 for edge cutting using a vinyl sheet laid thereon, and further There is a grout layer 33 made of mortar filled in order to fill the voids on the lower surface of each precast concrete slab 15 when installed, and the extended floor slab 10 is loaded thereon.

尚、延長床版１０の設置に際しては、図には示してないが、突き固め土工路盤３０を造成後、その上に砂層３１を敷設してその上面を均し、その上に縁切り用シート３２を敷設した後、その上にプレキャストコンクリート版１５を設置し、レベル調整用のボルトなどのレベル調整具を使用してプレキャストコンクリート版１５の設置水平度を調整し、しかる後、プレキャストコンクリート版１５に設けたグラウト注入孔より、プレキャストコンクリート版１５下の隙間にモルタルからなるグラウトを注入する。   In addition, when installing the extended floor slab 10, although not shown in the figure, after the tamping earthwork roadbed 30 is formed, a sand layer 31 is laid thereon, the upper surface thereof is leveled, and the edge cutting sheet 32 is provided thereon. After that, the precast concrete plate 15 is installed thereon, and the leveling of the precast concrete plate 15 is adjusted using a level adjusting tool such as a bolt for level adjustment. The grout which consists of mortar is inject | poured into the clearance gap under the precast concrete board | plate 15 from the grout injection hole provided.

このように延長床版１０下に縁切り用シート３２や砂層３１を敷設しておくことにより、橋梁の伸縮に対応した延長床版１０の移動がスムーズになされる。また、路盤３０が沈下した際には、延長床版１０に持ち上げ用の作業孔をあけ、ジャッキを使用して所要の水平度を回復させ、それによって生じる下面の空隙にグラウトすることにより補修することができる。尚、縁切り用シートと砂層とは必ずしも共に設置する必要はなく、いずれか一方のみでも良い。   Thus, by laying the edge cutting sheet 32 and the sand layer 31 under the extended floor slab 10, the extension floor slab 10 can be moved smoothly corresponding to the expansion and contraction of the bridge. Further, when the roadbed 30 sinks, repairing is performed by opening a working hole for lifting in the extended floor slab 10, restoring the required levelness using a jack, and grouting into the resulting gap in the lower surface. be able to. The edge cutting sheet and the sand layer are not necessarily installed together, and only one of them may be provided.

上述したように、本発明では、このようにして各プレキャストコンクリート版１５，１５間を非接着の接合構造とし、且つＰＣ緊張材１８にて緊張することによってヒンジ構造にして延長床版１０を構成しているため、土工部分の路盤の沈下や不陸の発生、更には活荷重による橋梁の屈伸の繰り返しに対して、柔軟にしかも局部的に急激な折れ曲がり段差が生じることなく順応することとなり、しかも、補修や既設橋梁における新たな伸縮連結構造の設置に際し、低コストで短時間に施工することができる。   As described above, in the present invention, the precast concrete slabs 15 and 15 are thus made to have a non-adhesive joint structure and are tensioned by the PC tension member 18 to form a hinge structure to constitute the extended floor slab 10. Therefore, it will adapt to the occurrence of subsidence and unevenness of the roadbed in the earthwork part, and the repeated bending and stretching of the bridge due to live load without causing a sharp bending step locally, Moreover, when repairing or installing a new telescopic connection structure in an existing bridge, construction can be performed in a short time at a low cost.

本発明に係る橋梁と土工部分の伸縮連結構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the expansion-contraction connection structure of the bridge and earthwork part which concern on this invention. 図１に示した伸縮連結構造におけるプレキャストコンクリート版の斜視図である。It is a perspective view of the precast concrete plate in the expansion-contraction connection structure shown in FIG. 図１に示す橋梁と土工部分の伸縮連結構造におけるＰＣ緊張材の定着部及び橋梁床版と延長床版の連結部を示す部分省略断面図である。FIG. 2 is a partially omitted cross-sectional view showing a fixing portion of a PC tension member and a connecting portion of a bridge floor slab and an extended floor slab in the expansion and contraction connection structure of the bridge and earthwork shown in FIG. 1.

符号の説明Explanation of symbols

ａ 間隔
１ 橋桁
１ａ 切欠き凹部
２ 床版
３ 橋台
３ａ 桁受け部
３ｂ 衝立部
４ 支承部材
５ 枕版
６ アンカーボルト
７ 滑り用パッド
８ クッション材
９ 伸縮材
１０ 延長床版
１０ａ 先端面
１１ 固定床版
１１ｂ 立ち上がり面
１２ 滑り用パッド
１３ 伸縮装置
１５ プレキャストコンクリート版
１５ａ 最橋梁寄り端部側プレキャストコンクリート版
１６ 地覆
１７ 弾性目地材
１８ ＰＣ緊張材
２０ 凹部
２１ 定着具
２２ 凹部
２３ 定着具
２４ 連結用鉄筋
２６ 鉄筋
３０ 突き固め土工路盤
３１ 砂層
３２ 縁切り用シート
３３ グラウト層 a interval 1 bridge girder 1a notched recess 2 floor slab 3 abutment 3a girder receiving part 3b partitioning part 4 support member 5 pillow 6 anchor bolt 7 sliding pad 8 cushioning material 9 stretchable material 10 extended floor slab 10a tip surface 11 fixed floor slab 11b Standing surface 12 Sliding pad 13 Telescopic device 15 Precast concrete plate 15a Precast concrete plate 16 near the end of the bridge The ground cover 17 Elastic joint material 18 PC tension material 20 Recess 21 Fixing tool 22 Recess 23 Fixing tool 24 Reinforcing bar 26 Reinforcing bar 30 Damping earthwork roadbed 31 Sand layer 32 Edge cutting sheet 33 Grout layer

Claims (5)

橋台に支持された橋梁端部から、該橋台背面の土工路盤上に延長された延長床版を有し、該延長床版の先端を、前記土工路盤上に設置した固定床版に一体成型された延長床版受け部上に滑動可能に載荷させ、前記固定床版と延長床版との間に伸縮装置を備えてなる橋梁と土工部分の伸縮連結構造において、
前記延長床版は、その道路軸方向の全長を複数に分割した形状の延長床版用プレキャストコンクリート版をもって構成し、該プレキャストコンクリート版間を非接着の突合せ接合構造とし、該プレキャストコンクリート版間を道路軸方向に向けたアンボンドＰＣ緊張材をもって緊張することによって連結したことを特徴とてなる橋梁と土工部分の伸縮連結構造。 It has an extended floor slab extended on the earthwork roadbed on the back of the abutment from the end of the bridge supported by the abutment, and the tip of the extended floor slab is molded integrally with the fixed floor slab installed on the earthwork roadbed In the stretch connection structure of the bridge and the earthwork part, which is slidably loaded on the extended floor slab receiving portion and provided with an expansion device between the fixed floor slab and the extension floor slab,
The extended floor slab is constituted by a precast concrete plate for an extended floor slab having a shape in which the entire length in the road axis direction is divided into a plurality, and a non-adhesive butt joint structure is provided between the precast concrete plates, An expansion and contraction connection structure between the bridge and the earthwork part, characterized by being connected by tensioning with an unbonded PC tendon facing in the direction of the road axis. 前記延長床版を構成する各プレキャストコンクリート版間にゴム状の弾性目地材を介在させている請求項１に記載の橋梁と土工部分の伸縮連結構造。   The expansion and contraction connection structure of a bridge and an earthwork part according to claim 1, wherein a rubber-like elastic joint material is interposed between each precast concrete slab constituting the extended floor slab. 前記延長床版を構成する最も橋梁端部側に位置する最橋梁寄り端部側プレキャストコンクリート版と橋梁上面床版とは鉄筋によって連結させ、該最橋梁寄り端部側プレキャストコンクリート版には、その上面に開口させたＰＣ緊張材端部定着用の凹部を設け、該凹部内にて前記アンボンドＰＣ緊張材の一端を定着させている請求項１又は２のいずれかに記載の橋梁と土工部分の伸縮連結構造。   The precast concrete slab closest to the bridge located on the most bridge end side constituting the extended floor slab is connected to the bridge top floor slab by a reinforcing bar, and the precast concrete slab closest to the bridge end includes 3. A bridge and earthwork portion according to claim 1, wherein a recess for fixing the end portion of the PC tendon material opened on the upper surface is provided, and one end of the unbonded PC tendon material is fixed in the recess. Telescopic connection structure. 橋台背面の土工路盤上面と前記延長床版との間には合成樹脂シート及び／又は砂層、及び裏込めモルタルを介在させている請求項１〜３の何れか１に記載の橋梁と土工部分の伸縮連結構造。   The bridge and earthwork part according to any one of claims 1 to 3, wherein a synthetic resin sheet and / or a sand layer and a backfill mortar are interposed between the upper surface of the earthwork roadbed on the back of the abutment and the extended floor slab. Telescopic connection structure. 前記各延長床版用プレキャストコンクリート版は、道路の幅員方向の全幅に至る長さを一体形成している請求項１〜４の何れか１に記載の橋梁と土工部分の伸縮連結構造。   The stretch connection structure of a bridge and an earthwork part according to any one of claims 1 to 4, wherein each of the precast concrete slabs for an extended floor slab is integrally formed with a length that reaches the entire width in the width direction of the road.
JP2007081971A 2007-03-27 2007-03-27 Telescopic connection structure between bridge and earthwork Active JP4780501B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007081971A JP4780501B2 (en) 2007-03-27 2007-03-27 Telescopic connection structure between bridge and earthwork

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007081971A JP4780501B2 (en) 2007-03-27 2007-03-27 Telescopic connection structure between bridge and earthwork

Publications (2)

Publication Number Publication Date
JP2008240348A JP2008240348A (en) 2008-10-09
JP4780501B2 true JP4780501B2 (en) 2011-09-28

Family

ID=39912009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007081971A Active JP4780501B2 (en) 2007-03-27 2007-03-27 Telescopic connection structure between bridge and earthwork

Country Status (1)

Country Link
JP (1) JP4780501B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195402A (en) * 2019-06-27 2019-09-03 安徽劲帆建设有限公司 A kind of road rehabilitation module and its construction method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5877697B2 (en) * 2011-11-25 2016-03-08 東日本高速道路株式会社 Improved bridge support structure and construction method
JP6395056B2 (en) * 2015-09-08 2018-09-26 西日本高速道路株式会社 How to make precast concrete slabs
CN107299591A (en) * 2017-09-04 2017-10-27 中国建筑第七工程局有限公司 A kind of non-bolt corrugated sheet bridge extension joint
CN114922023B (en) * 2022-05-23 2023-07-04 中铁十五局集团有限公司 Short-circuit base transition section structure between highway bridge tunnels and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195402A (en) * 2019-06-27 2019-09-03 安徽劲帆建设有限公司 A kind of road rehabilitation module and its construction method
CN110195402B (en) * 2019-06-27 2021-01-29 安徽劲帆建设有限公司 Road repairing module and construction method thereof

Also Published As

Publication number Publication date
JP2008240348A (en) 2008-10-09

Similar Documents

Publication Publication Date Title
JP5113290B2 (en) Construction method of semi-integral abut bridge using steel box girder
KR101293285B1 (en) Fixed running track on a bridge structure
JP4675826B2 (en) Continuous structure of bridge joints
JP4780501B2 (en) Telescopic connection structure between bridge and earthwork
JP2007046365A (en) Joint portion structure of bridge
JP2004124617A (en) Bearing replacement method for existing bearing device, and bearing device
JP2018112009A (en) Vertical member installation structure, vertical member installation method, and precast vertical member
JP5766544B2 (en) Slab track reinforcement method and protrusion alternative structure
KR101627279B1 (en) Biased soil pressure reinforcement rigid-frame bridge and construction method of the same
CN108547209B (en) Single-hole prefabricated hollow slab bridge without expansion joint and construction method thereof
JP4990246B2 (en) How to install smooth material in road construction method
JP5143666B2 (en) PC bridge erection method
KR100780370B1 (en) Tie bar for reinforced concrete pavemant and reinforced concrete pavemant method using the same
KR20190112451A (en) Construction Method of Expansion Joints Device with Improved Durability using Elastomeric Pad
JP2021011778A (en) Road structure
JP4739072B2 (en) Girder structure and construction method when multiple simple girder bridges are used as one simple girder bridge
KR20200081951A (en) Bridge expansion joints with the improved installation and method thereof
JP5875855B2 (en) Block type buried joint expansion and contraction device for bridge
KR101060103B1 (en) Prestressed concrete paving method for road repair and its structure
KR101002231B1 (en) Finger type expansion joint for bridges which used section steel and it's production and installation methods
JP2007169950A (en) Expansion body for bridge, and bridge expansion structure using the same
KR20060085054A (en) Composition structure of integral abutment bridge
JP5998181B2 (en) Bridge deck connection method for road bridges
KR101252427B1 (en) Exhibition space slab new construction structure having finishing mold and construction method of the same
JP4036178B2 (en) Method and apparatus for installing concrete block

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091224

TRDD Decision of grant or rejection written
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110601

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110607

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110624

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140715

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4780501

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350