JP2005264672A - Interblock joint structure - Google Patents

Interblock joint structure Download PDF

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JP2005264672A
JP2005264672A JP2004083134A JP2004083134A JP2005264672A JP 2005264672 A JP2005264672 A JP 2005264672A JP 2004083134 A JP2004083134 A JP 2004083134A JP 2004083134 A JP2004083134 A JP 2004083134A JP 2005264672 A JP2005264672 A JP 2005264672A
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block
joint structure
blocks
rod
edge cutting
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JP4451177B2 (en
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Masaki Takaku
高久雅喜
Masaaki Toyama
外山雅昭
Keiichi Taniguchi
谷口恵一
Shin Harada
原田慎
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Taisei Corp
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Taisei Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an interblock joint structure capable of rapidly joining blocks to each other without requiring a severe installation accuracy. <P>SOLUTION: This interblock joint structure for transmitting a shearing force between precast blocks 11 and 12 comprises a bar 2 fixed to one block 12 and disposed projectedly to the other block side, an edge cutting material 4 disposed on the projected surface of the bar 2, a cushion material 3 disposed on the outer periphery of the edge cutting material 4, and a filler 5 filled between the cushion material 3 and the recess 111 of the other block 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、沈埋函やカルバート函体などのプレキャストブロック間を接続するブロック間継手構造に関するものである。
The present invention relates to an inter-block joint structure for connecting precast blocks such as a sinking box and a culvert box.

水底トンネルやアンダーパス用のトンネルなどを構築する場合に、プレキャストブロックを複数並べて構築する方法がある。並べられたブロック間は、一体性または止水性を確保するために接合されるのが通常である。
例えば、水底にプレキャスト函体を並べて水底トンネルを構築する沈埋工法では、隣接する沈埋函ａ，ａの間でせん断力を伝達するためにせん断キーを設ける。図４に従来のブロック間継手構造を示す。従来から実施されている構造では、鉛直せん断キーｂと水平せん断キーｃを分けて配置している。
鉛直せん断キーｂには、鋼構造を使用するのが一般的であり、沈埋函ａ，ａ同士を接合した後に函内の水を排水して、鉛直せん断キーｂの端面を対面する沈埋函ａの端面に溶接する。また、水平せん断キーｃには鉄筋コンクリート構造を使用するのが一般的であり、函内を排水後に床版上に構築する道床コンクリートの一部に凹部と凸部を形成し、嵌合させることによって水平せん断力を伝達する。
特開２００３−２１３７０９号公報（図３） There is a method of constructing a plurality of precast blocks side by side when constructing a submarine tunnel or an underpass tunnel. Usually, the arranged blocks are joined to ensure unity or water-stopping.
For example, in a submergence method in which a precast box is arranged on the bottom of the water to construct a submarine tunnel, a shear key is provided to transmit a shearing force between adjacent submerged boxes a and a. FIG. 4 shows a conventional inter-block joint structure. In the conventional structure, the vertical shear key b and the horizontal shear key c are separately arranged.
A steel structure is generally used for the vertical shearing key b. After the sinking boxes a and a are joined together, the water in the box is drained, and the sinking box a facing the end surface of the vertical shearing key b. Weld to the end face. In addition, it is common to use a reinforced concrete structure for the horizontal shearing key c, and by forming a recess and a protrusion on a part of the roadbed concrete that is constructed on the floor slab after draining the box, Transmits horizontal shear force.
Japanese Patent Laying-Open No. 2003-213709 (FIG. 3)

前記した従来のブロック間継手構造にあっては、次のような問題点がある。
＜１＞鉛直せん断キー及び水平せん断キーの接合や構築は、函内を排水した後に現場でおこなうべき作業が多く、工期が長期化する原因になる。
＜２＞鉛直せん断キーを対向する沈埋函に設けた仮受けブラケット上に設置して両者を接合することになる。このため、高い設置精度が要求され、設置作業に時間がかかる。
The above-described conventional inter-block joint structure has the following problems.
<1> The joining and construction of the vertical shear key and the horizontal shear key involve a lot of work to be performed at the site after draining the inside of the box, which causes the construction period to be prolonged.
<2> A vertical shear key is installed on a temporary receiving bracket provided in an opposing sinking box, and both are joined. For this reason, high installation accuracy is required, and installation work takes time.

上記のような課題を解決するために、本発明のブロック間継手構造は、プレキャストブロック間でせん断力を伝達するためのブロック間継手構造であって、一方のブロックに固定し、他方のブロック側に突出して配置される棒体と、前記棒体の突出した表面に配置する縁切り材と、前記縁切り材の外周に配置される緩衝材と、前記緩衝材と他方のブロックの凹部の間に充填する充填材と、からなるものである。ここで、前記棒体を鋼管によって形成し、前記縁切り材をアンボンドテープによって形成し、前記緩衝材をゴム系充填材によって形成することができる。
In order to solve the above-described problems, the inter-block joint structure of the present invention is an inter-block joint structure for transmitting a shear force between precast blocks, which is fixed to one block and the other block side. A rod body that protrudes to the surface of the rod body, an edge cutting material that is disposed on the protruding surface of the rod body, a cushioning material that is disposed on the outer periphery of the edge cutting material, and a gap between the cushioning material and the recess of the other block And a filler. Here, the rod body can be formed of a steel pipe, the edge cutting material can be formed of an unbonded tape, and the buffer material can be formed of a rubber-based filler.

本発明のブロック間継手構造は、上記した課題を解決するための手段により、次のような効果の少なくとも一つを得ることができる。
＜１＞一方のブロックから突出する棒体を、大きめに形成した他方のブロックの凹部に挿入することで接合がおこなえる。このため、厳格な据付精度を必要とせず、迅速にブロックを接合することができる。
＜２＞一方のブロックと棒体は縁切り材によって縁が切られ、棒体の軸方向及び軸周りの回転方向の拘束がほとんどない。このため、地震などによってこれらの方向の力が発生しても、ブロック間継手構造が破損することがない。
＜３＞一方のブロックと棒体の間に緩衝材を配置しているため、棒体の支点がせん断弾性バネとして働き、継手構造に過剰な応力が発生することを防ぐことができる。
The inter-block joint structure of the present invention can obtain at least one of the following effects by means for solving the above problems.
<1> Joining can be performed by inserting a rod projecting from one block into the recess of the other block formed larger. For this reason, a strict installation precision is not required but a block can be joined rapidly.
<2> The edge of the one block and the rod is cut by the edge cutting material, and there is almost no restriction in the axial direction of the rod and the rotational direction around the axis. For this reason, even if the force of these directions generate | occur | produces by an earthquake etc., the joint structure between blocks is not damaged.
<3> Since the cushioning material is disposed between the one block and the rod, the fulcrum of the rod acts as a shear elastic spring, and it is possible to prevent excessive stress from being generated in the joint structure.

以下、図面を参照しながら本発明の実施の形態について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

＜１＞ブロック間継手構造
ブロック１１，１２は、鉄筋コンクリート、鋼材、鋼板とコンクリートの複合材などで製作するプレキャストブロックをいう。ブロック１１，１２は、水底トンネルを構築するために水底に沈設する沈埋函、アンダーパスを構築するためのカルバート函体などに使用できる。ブロック１１，１２の断面形状は矩形、楕円形など任意に選択することができる。
ブロック間継手構造は、対向するブロック１１，１２間を連結する継手部の構造である。継手部には、せん断力を伝達するための棒体２、棒体２の外周に配置される緩衝材３、緩衝材３と棒体２の間に配置される縁切り材４、ブロック１１に設けた凹部１１１と緩衝材３の間に充填する充填材５などが配置される。
<1> Inter-block joint structure The blocks 11 and 12 are precast blocks made of reinforced concrete, steel, a composite of steel plate and concrete, or the like. The blocks 11 and 12 can be used for a submerged box to be submerged in the bottom of the water to construct a submarine tunnel, a culvert box to construct an underpass, or the like. The cross-sectional shape of the blocks 11 and 12 can be arbitrarily selected, such as a rectangle or an ellipse.
The joint structure between blocks is a structure of a joint part that connects between the blocks 11 and 12 facing each other. The joint portion is provided with a rod body 2 for transmitting a shearing force, a cushioning material 3 disposed on the outer periphery of the rod body 2, an edge cutting material 4 disposed between the cushioning material 3 and the rod body 2, and a block 11. The filler 5 to be filled is disposed between the recessed portion 111 and the buffer material 3.

＜２＞棒体
棒体２は、２つのブロック１１，１２間に跨って配置して、せん断力に対抗する部材である。棒体２には、鋼管、鋳鉄管、鋼棒などの棒状部材が使用できる。棒体２の材質、形状、配置本数は、ブロック１１，１２間に作用するせん断力に合わせて任意に設定することができる。
例えば、円筒形の鋼管を利用して棒体２とすることができる。鋼管の中空部には、必要に応じてコンクリート等の間詰材２１を充填して耐力を向上させることができる。
棒体２は、一方のブロック１２に固定する。例えばブロック１２がコンクリート製の場合、棒体２の一部を埋め込むことによって固定する。また、ブロック１２の接合側端面が鋼材である場合は、棒体２を溶接によって固定することもできる。
<2> Rod Body The rod body 2 is a member that is disposed across the two blocks 11 and 12 and counters the shearing force. The rod body 2 can be a rod-shaped member such as a steel pipe, a cast iron pipe, or a steel bar. The material, shape, and arrangement number of the rods 2 can be arbitrarily set according to the shearing force acting between the blocks 11 and 12.
For example, the rod 2 can be formed using a cylindrical steel pipe. The hollow portion of the steel pipe can be filled with a filler 21 such as concrete as necessary to improve the yield strength.
The rod 2 is fixed to one block 12. For example, when the block 12 is made of concrete, it is fixed by embedding a part of the rod 2. Moreover, when the joining side end surface of the block 12 is a steel material, the rod body 2 can also be fixed by welding.

＜３＞縁切り材
縁切り材４は、ブロック１１に充填材５を介して最終的に固定される緩衝材３と棒体２との縁を切って、棒体２を軸方向の拘束から開放するための部材である。縁切り材４を配置することで、棒体２の軸方向の移動は局所的に非拘束となる。
縁切り材４は、例えば表面の摩擦係数が小さいアンボンドテープを棒体２の表面に貼り付けることによって配置することができる。また、低摩擦材料を塗布することによって配置することもできる。この縁切り材４を貼り付けた後に後述する緩衝材３を配置する。縁切り材４は、一方のブロック１２から突出する部分にのみ配置する。
<3> Edge Cutting Material The edge cutting material 4 cuts the edge of the buffer material 3 and the rod body 2 which are finally fixed to the block 11 via the filler 5, thereby releasing the rod body 2 from the axial restraint. It is a member for. By arranging the edge cutting member 4, the movement of the rod body 2 in the axial direction is locally unconstrained.
The edge cutting member 4 can be arranged by, for example, attaching an unbonded tape having a small surface friction coefficient to the surface of the rod 2. It can also be arranged by applying a low friction material. A buffer material 3 to be described later is disposed after the edge cutting material 4 is pasted. The edge cutting member 4 is disposed only in a portion protruding from one block 12.

＜４＞緩衝材
緩衝材３は、棒体３とブロック１１の間に配置する弾性部材である。緩衝材３は、地震や波浪などよって一時的に強い力がブロック間に作用した場合に、緩衝材３を変形させることによってせん断弾性バネとて挙動し、継手構造に過剰な応力が発生することを防ぐものである。また、緩衝材３が弾性変形することによって、棒体２の軸周りの回転角を吸収でき、拘束モーメントの発生を抑えることができる。すなわち、極めて弱い回転バネであるといえる。
緩衝材３はあまり厚く配置すると、ブロック間１１，１２に段差を生じるような相対変位を発生させる原因ともなりかねないため、他の継手部の構造に影響を与えない程度の厚さに留めるのが好ましい。
緩衝材３には、例えば硬度が４０度程度のゴム系充填材が使用できる。例えば縁切り材４を配置した棒体２の外形よりも大きな内径を有する底付き円筒管３１を型枠として設置し、底付き円筒管３１と縁切り材４の隙間にゴム系充填材を充填して緩衝材３を形成する。
<4> Buffer Material The buffer material 3 is an elastic member disposed between the rod 3 and the block 11. The buffer material 3 behaves as a shear elastic spring by deforming the buffer material 3 when a strong force is temporarily applied between the blocks due to an earthquake or a wave, and excessive stress is generated in the joint structure. Is to prevent. Further, the elastic deformation of the cushioning material 3 can absorb the rotation angle around the axis of the rod body 2 and suppress the generation of the restraining moment. That is, it can be said that it is a very weak rotation spring.
If the cushioning material 3 is arranged too thick, it may cause a relative displacement that causes a step between the blocks 11 and 12, so the thickness of the cushioning material 3 is not limited so as not to affect the structure of other joint portions. Is preferred.
For the buffer material 3, for example, a rubber filler having a hardness of about 40 degrees can be used. For example, a bottomed cylindrical tube 31 having an inner diameter larger than the outer shape of the rod body 2 on which the edge cutting member 4 is disposed is installed as a mold, and a gap between the bottom cylindrical tube 31 and the edge cutting member 4 is filled with a rubber filler. The buffer material 3 is formed.

＜５＞充填材
充填材５は、ブロック１１に形成した凹部１１１と緩衝材３の間に充填する固結材である。例えば、グラウトモルタル、セメントミルク、コンクリート、接着剤などが使用できる。
ブロック１１には、予め棒体２の突出した部分を収容する凹部１１１を形成しておく。凹部１１１を棒体２の突出部より大きく形成しておけば、ブロックの設置精度が低かったり、施工誤差を生じていたりする場合でも、容易に２つのブロック１１，１２を接合することができる。
<5> Filler Filler 5 is a consolidated material filled between the recess 111 formed in the block 11 and the buffer material 3. For example, grout mortar, cement milk, concrete, adhesive and the like can be used.
The block 11 is previously formed with a recess 111 for accommodating the protruding portion of the rod 2. If the recessed part 111 is formed larger than the protrusion part of the rod body 2, even when the installation precision of a block is low or the construction error has arisen, the two blocks 11 and 12 can be joined easily.

以下、ブロック１１，１２として水底に沈設する沈埋函を使用した場合の実施例について説明する。   Hereinafter, the Example at the time of using the embedding box sunk in the water bottom as the blocks 11 and 12 is described.

＜１＞棒体の製作
工場にて棒体２に縁切り材４及び緩衝材３を取り付ける。棒体２には鋼管を使用し、コンクリートを間詰材２１として鋼管内部に充填する。
棒体２の突出させる部分にはアンボンドテープを縁切り材４として貼り付ける。そして、底付き円筒管３１のいずれの内面からも間隔を置いた位置に棒体２の縁切り材４を貼り付けた部分を挿入して仮置きをする。この状態でゴム系充填材を底付き円筒管３１の内部に充填すれば、棒体２の周囲に緩衝材３が配置される。
以上の棒体２の加工作業は工場にて実施することができるため、精度よく、効率的に実施できる。
<1> Manufacture of rod body The edge cutting material 4 and the buffer material 3 are attached to the rod body 2 at a factory. A steel pipe is used for the rod 2, and concrete is filled into the steel pipe as a filling material 21.
An unbonded tape is attached to the protruding portion of the rod body 2 as the edge cutting material 4. And the part which stuck the edge cutting material 4 of the rod 2 to the position spaced apart from any inner surface of the cylindrical tube 31 with a bottom is inserted, and is temporarily placed. If the rubber-based filler is filled into the bottomed cylindrical tube 31 in this state, the cushioning material 3 is disposed around the rod body 2.
Since the above-described processing of the rod body 2 can be performed at a factory, it can be performed accurately and efficiently.

＜２＞ブロックの製作
ブロック１１，１２は、鉄筋コンクリートによって陸上の製作ヤードで製作する。ブロック１２の接合方向の端面の例えば４隅に、棒体２の緩衝材３を配置していない部分を埋設する。取り付け方法としては、例えばブロック１２の端面を形成するための型枠に、棒体２の緩衝材３を配置した側を固定して型枠をセットし、型枠の内側にコンクリートを打設することによって棒体２とブロック１２を一体化する。また、接合時に棒体２を受け入れる側のブロック１１には、棒体２を挿入する位置に凹部１１１を形成しておく。 <2> Production of blocks The blocks 11 and 12 are made of reinforced concrete in a production yard on land. For example, at the four corners of the end surface of the block 12 in the joining direction, a portion of the rod body 2 where the cushioning material 3 is not disposed is embedded. As an attachment method, for example, a mold frame for forming the end face of the block 12 is fixed with the side on which the cushioning material 3 of the rod 2 is fixed, the mold frame is set, and concrete is placed inside the mold frame. As a result, the rod 2 and the block 12 are integrated. In addition, a recess 111 is formed in the block 11 on the side that receives the rod 2 at the time of joining at a position where the rod 2 is inserted.

また、ブロック１１，１２の端面には、ブロック同士の接合部の止水性を高めるため、例えば一次止水材６１と二次止水材６２を配置する（図２参照）。一次止水材６１は、例えばブロック同士が接する端面に配置する線状の止水シールで、ブロック１２の端面に環状に取り付ける。一次止水材６１には、ゴムシールやガスケットなど公知の止水材料が使用できる。この一次止水材６１は、ブロック１２を既設のブロック１１に押し付けたときに自重や慣性力や引き寄せ力などで変形して止水性を発揮する。二次止水材６２は、例えば仮接合が完了して、ブロック１内部を排水した後に内部から取り付ける止水材である。例えば、断面Ω型の止水ゴムが使用できる。二次止水材６２は、ブロック１１，１２間を跨ぐように取り付ける。
ブロック１１，１２の貫通方向の端部には、例えば突起したガイド部７とそれを受け入れる陥没部を形成するのが好ましい。例えば、ブロック１２の一方の端面の一部を突起させて構築し、その表面にゴムシートなどの緩衝材を貼り付けて矩形せん断キー型のガイド部７を形成する（図２参照）。
Moreover, in order to improve the water-stopping property of the junction part between blocks, the primary water-stopping material 61 and the secondary water-stopping material 62 are arrange | positioned in the end surface of the blocks 11 and 12 (refer FIG. 2). The primary water-stop material 61 is a linear water-proof seal disposed on, for example, an end surface where the blocks contact each other, and is attached to the end surface of the block 12 in an annular shape. As the primary waterproof material 61, a known waterproof material such as a rubber seal or a gasket can be used. When the block 12 is pressed against the existing block 11, the primary water blocking material 61 is deformed by its own weight, inertial force, pulling force, or the like, and exhibits water blocking properties. The secondary water stop material 62 is a water stop material that is attached from the inside after, for example, temporary joining is completed and the inside of the block 1 is drained. For example, a waterproof rubber with a Ω cross section can be used. The secondary waterproof material 62 is attached so as to straddle between the blocks 11 and 12.
It is preferable to form, for example, a protruding guide portion 7 and a recessed portion for receiving the guide portion 7 at the end portions of the blocks 11 and 12 in the penetrating direction. For example, a part of one end face of the block 12 is protruded and constructed, and a cushioning material such as a rubber sheet is attached to the surface to form a rectangular shear key type guide portion 7 (see FIG. 2).

＜３＞函体の接合
予め水底に沈設しておいた既設のブロック１１の隣に、棒体２を固定したブロック１２を沈設する。そして、緩衝材３に包まれた棒体２をブロック１１の凹部１１１に挿入する。ここで、凹部１１１を据付誤差に応じて余裕のある大きさに形成しておくことで、据付精度に左右されずブッロク１１，１２同士を接合することができる。また、ブロック１２の端面に設けたガイド部７も嵌合させて接合する。
ブロック１２が引き寄せジャッキなどで引き寄せられてブロック１１と衝突すると、一次止水材６１が変形して一次止水が完了する。そして、ブロック１１，１２内の水を排水して気中状態になった後に二次止水材６２を取り付ける。
そして、凹部１１１にグラウトモルタルを充填材５として注入して、凹部１１１と緩衝材３（または底付き円筒管３１）の隙間を充填材５で満たす。図３に充填材５の充填方法を示す。充填材５は、注入管５１から凹部１１１内に向けて注入し、エア抜き用の排出管５２から充填材５が排出されれば、凹部１１１の隙間が充填材５で満たされたことが確認できる。
<3> Joining of Boxes A block 12 to which the rod body 2 is fixed is sunk next to an existing block 11 that has been sunk in advance at the bottom of the water. Then, the rod body 2 wrapped in the buffer material 3 is inserted into the recess 111 of the block 11. Here, by forming the concave portion 111 with a margin according to the installation error, the blocks 11 and 12 can be joined to each other regardless of the installation accuracy. Moreover, the guide part 7 provided in the end surface of the block 12 is also fitted and joined.
When the block 12 is pulled by a pulling jack or the like and collides with the block 11, the primary water blocking material 61 is deformed to complete the primary water blocking. And after draining the water in the blocks 11 and 12 and being in an air state, the secondary water stop material 62 is attached.
Then, grout mortar is injected as the filler 5 into the recess 111, and the gap between the recess 111 and the buffer material 3 (or the bottomed cylindrical tube 31) is filled with the filler 5. FIG. 3 shows a filling method of the filler 5. When the filler 5 is injected from the injection pipe 51 into the recess 111 and the filler 5 is discharged from the discharge pipe 52 for bleeding air, it is confirmed that the gap of the recess 111 is filled with the filler 5. it can.

本発明のブロック間継手構造の実施例の説明図。Explanatory drawing of the Example of the joint structure between blocks of this invention. ブロックの接合状態の実施例の斜視図。The perspective view of the Example of the joining state of a block. ブロック間継手構造の構築時の実施例の断面図。Sectional drawing of the Example at the time of construction | assembly of the joint structure between blocks. 従来のブロック間継手構造の実施例の説明図。Explanatory drawing of the Example of the conventional block joint structure.

符号の説明Explanation of symbols

１１・・ブロック
１２・・ブロック
１１１・凹部
２・・・棒体
２１・・間詰材
３・・・緩衝材
４・・・縁切り材
５・・・充填材 11 ··· Block 12 ··· Block 111 · Recess 2 · · · Rod 21 · · Filling material 3 · · · Buffer material 4 · · Edge cutting material 5 · · · Filler

Claims (2)

プレキャストブロック間でせん断力を伝達するためのブロック間継手構造であって、
一方のブロックに固定し、他方のブロック側に突出して配置される棒体と、
前記棒体の突出した表面に配置する縁切り材と、
前記縁切り材の外周に配置される緩衝材と、
前記緩衝材と他方のブロックの凹部の間に充填する充填材と、からなる、ブロック間継手構造。
An inter-block joint structure for transmitting a shear force between precast blocks,
A rod that is fixed to one block and is arranged to protrude to the other block;
An edge cutting material disposed on the protruding surface of the rod,
Cushioning material disposed on the outer periphery of the edge cutting material;
An inter-block joint structure comprising the cushioning material and a filler filled between the recesses of the other block.
請求項１記載のブロック間継手構造において、
前記棒体を鋼管によって形成し、
前記縁切り材をアンボンドテープによって形成し、
前記緩衝材をゴム系充填材によって形成したことを特徴とする、ブロック間継手構造。 In the inter-block joint structure according to claim 1,
The rod is formed of a steel pipe;
Forming the edge cutting material with unbonded tape;
An inter-block joint structure, wherein the cushioning material is formed of a rubber-based filler.
JP2004083134A 2004-03-22 2004-03-22 Inter-block joint structure Expired - Lifetime JP4451177B2 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
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JP2007154537A (en) * 2005-12-06 2007-06-21 Nippon Steel Composite Co Ltd Cuttable fiber-reinforced resin-made segment and wall body of shield tunnel
JP2014125813A (en) * 2012-12-27 2014-07-07 Umezawa Michinori Earthquake-resistant precast box culvert
JP2016020569A (en) * 2014-07-14 2016-02-04 植村　誠 Concrete box body used for open shield method
JP2017020191A (en) * 2015-07-08 2017-01-26 西川ゴム工業株式会社 Earthquake resistant structure in connection part of manhole sidewall and pipe
JP2017179860A (en) * 2016-03-30 2017-10-05 植村　誠 Concrete box body for open shield method, and guide pin used therewith
CN109440820A (en) * 2018-12-29 2019-03-08 上海洁鹿环保科技有限公司 It is a kind of to fill out sea or the internal immersed tube for being filled with construction waste of bridge
US10544581B2 (en) * 2017-08-30 2020-01-28 Cccc Highway Consultants Co., Ltd. Prestressed tube section structure and construction method thereof
JP7429009B2 (en) 2020-08-20 2024-02-07 株式会社クボタ segment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007154537A (en) * 2005-12-06 2007-06-21 Nippon Steel Composite Co Ltd Cuttable fiber-reinforced resin-made segment and wall body of shield tunnel
JP2014125813A (en) * 2012-12-27 2014-07-07 Umezawa Michinori Earthquake-resistant precast box culvert
JP2016020569A (en) * 2014-07-14 2016-02-04 植村　誠 Concrete box body used for open shield method
JP2017020191A (en) * 2015-07-08 2017-01-26 西川ゴム工業株式会社 Earthquake resistant structure in connection part of manhole sidewall and pipe
JP2017179860A (en) * 2016-03-30 2017-10-05 植村　誠 Concrete box body for open shield method, and guide pin used therewith
US10544581B2 (en) * 2017-08-30 2020-01-28 Cccc Highway Consultants Co., Ltd. Prestressed tube section structure and construction method thereof
CN109440820A (en) * 2018-12-29 2019-03-08 上海洁鹿环保科技有限公司 It is a kind of to fill out sea or the internal immersed tube for being filled with construction waste of bridge
JP7429009B2 (en) 2020-08-20 2024-02-07 株式会社クボタ segment

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