JP4401249B2 - Impermeable structure for joints - Google Patents

Impermeable structure for joints Download PDF

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JP4401249B2
JP4401249B2 JP2004185366A JP2004185366A JP4401249B2 JP 4401249 B2 JP4401249 B2 JP 4401249B2 JP 2004185366 A JP2004185366 A JP 2004185366A JP 2004185366 A JP2004185366 A JP 2004185366A JP 4401249 B2 JP4401249 B2 JP 4401249B2
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joint
caisson
joints
water
joint material
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JP2006009315A (en
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好生 西野
多克 和木
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Shibata Industrial Co Ltd
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Shibata Industrial Co Ltd
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Description

本発明は、ケーソンやL型ブロック等の海(水)域に築造される構造物の目地の遮水構に関する。   The present invention relates to a watertight structure for a joint of a structure built in a sea (water) area such as a caisson or an L-shaped block.

海域等に遮蔽区域を構築する廃棄物処分場や護岸構造等の構造物において、コンクリート製や鋼鉄製、鋼鉄やコンクリートを用いたハイブリッド製のケーソンやL型ブロック等の構造物を連続させて遮蔽区域を構築する工法がある。このような工法の場合、構造物は地盤変動、不等沈下、埋立て荷重等によって隣り合う構造物間の目地間隔が変位して遮水機能が失われることがある。   In structures such as waste disposal sites and revetment structures that build shielding areas in the sea, etc., shields are made by continuously covering structures such as concrete, steel, hybrid caissons and L blocks made of steel or concrete. There is a construction method to build the area. In the case of such a construction method, the water shielding function may be lost due to displacement of joints between adjacent structures due to ground fluctuation, uneven settlement, landfill load, and the like.

そこで、目地間隔の変位に対応する遮水構造の従来例として、隣り合うケーソン間で構成する目地の両端部付近において、一方のケーソンの妻壁に固定された2本の長筒と、これら長筒の間の目地内に充填されたアスファルト混合物からなる不透水壁層から構築される構造がある(例えば、特許文献1参照。)。
特開2002−167772号公報
Therefore, as a conventional example of the water-blocking structure corresponding to the displacement of the joint spacing, in the vicinity of both ends of the joint formed between adjacent caissons, two long cylinders fixed to one end wall of the caisson, and these lengths There is a structure constructed from an impermeable wall layer made of an asphalt mixture filled in joints between cylinders (see, for example, Patent Document 1).
JP 2002-167772 A

このような従来技術によると、目地内に多くの長筒を取り付けなければならないことになり、その取付け作業は、ケーソンの設置現場の海域で行うことができないためにケーソンの設置前に陸上で取り付けておくことになる。その場合、ケーソンの設置作業の際にケーソン同士が衝突することがあり、その際に、長筒がつぶされて損傷することがある。
また、ケーソンの目地間隔が変化した場合、それに追従できる範囲は長筒の径で決まってしまうという問題がある。
According to such conventional technology, many long tubes have to be installed in the joints, and since the installation work cannot be performed in the sea area of the caisson installation site, it is installed on land before the caisson installation. I will keep it. In this case, the caissons may collide with each other during the caisson installation work, and in this case, the long cylinder may be crushed and damaged.
In addition, when the caisson joint interval changes, there is a problem that the range in which the caisson joint distance can follow is determined by the diameter of the long cylinder.

特に、ケーソンの不等沈下等による移動は垂直だけではなく、傾いて移動することが一般であり、そのために目地の変位は平行に変位するのではなく、斜めに変位することになる。
そうなると、長筒は変形して追従することができないために対面のケーソン壁への密着が全長にわたって得られず、上下どちらかに生じた目地幅の広い方に隙間が生じてしまうという問題がある。
In particular, the movement of the caisson due to unequal subsidence or the like is generally not only vertical but also tilted, so that the joint displacement is not parallel but displaced obliquely.
Then, since the long tube cannot be deformed and follow, there is a problem in that the contact with the facing caisson wall cannot be obtained over the entire length, and a gap is generated in the wider joint width generated either above or below. .

本発明は、上記の問題点を解決するためになされたもので、どのような目地幅の変位にも対応できる手段を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide means capable of dealing with any joint width displacement.

そこで本発明は、連続配置したケーソンやL型ブロック等の構造物の目地を構成する互いに対向する角部にそれぞれ斜面を形成すると共に側壁の外面に、目地に沿って所定間隔に埋め込みプレートを取り付け、その対向する埋め込みプレートに可撓性を有する止水目地材の側部をそれぞれ固着させてたるみを形成し、そのたるみを目地および前記斜面によって形成された空間内に納め、さらに、前記埋め込みプレートを外側から覆うように移動代を有する可撓性の耐圧目地材の両側をそれぞれ構造物の側壁の外面に固着させたことを特徴とする。 Therefore, the present invention forms slopes at mutually opposite corners constituting joints of structures such as caisson and L-shaped blocks arranged continuously, and attaches embedded plates to the outer surface of the side wall at predetermined intervals along the joints. The side walls of the waterproof joint material having flexibility are fixed to the opposing embedded plates to form a slack, the slack is accommodated in the space formed by the joint and the slope, and the embedded plate Both sides of a flexible pressure-resistant joint material having a movement allowance so as to cover from the outside are fixed to the outer surface of the side wall of the structure.

さらに、埋め込みプレートに取付けプレートを取り付け、その対向する取付けプレートに止水目地材の両側をそれぞれ固着させてたるみを持たせた状態で取り付けたことを特徴とする。   Further, the mounting plate is attached to the embedding plate, and both sides of the water-stop joint material are fixed to the opposing mounting plate in a state of having slack.

これにより、本発明は、ケーソン間の目地は耐圧目地材と止水目地材の二重構造によって、遮水されるもので、水圧、波圧、地震力、埋立て材等の土圧等に対しては耐圧目地材によって対応するために止水目地材は、目地間の遮水効果が高まると共に耐久性が向上する。
また、不等沈下等によってケーソンが移動して目地間隔に変位が生じた場合、その変位に対して、止水目地材はそのたるみで、耐圧目地材はその移動代によって対応することができ、遮水性能は維持できるという効果が得られる。
As a result, the joint between the caissons is water-blocked by the double structure of the pressure joint material and the waterproof joint material, so that water pressure, wave pressure, seismic force, earth pressure such as landfill material, etc. On the other hand, in order to respond | correspond with a pressure | voltage resistant joint material, the waterproofing joint material improves durability while improving the water-blocking effect between joints.
In addition, when the caisson moves due to unequal subsidence or the like and displacement occurs in the joint interval, the waterproof joint material can respond to the displacement by the slack, and the pressure joint material can correspond by the movement allowance, The effect that the water shielding performance can be maintained is obtained.

以下に、図面を参照して本発明の実施例を説明する。
図1は本発明の実施例を示す拡大断面説明図、図2は要部説明図、図3は側面説明図である。
図において、1は構造物であるコンクリート製のケーソンであり、アスファルト混合物等によって基礎を固めた隣接するケーソンの互いに対向する側壁2の前後の一方もしくは両方の外面の角部、つまり角部から多少外寄りの外面に、所定間隔にアンカー筋3を有するステンレス製等の埋め込みプレート4を上下方向の全長にわたって取り付け、そのプレートの表面はコンクリート面と同一面等により露出させてある。なお、この説明の構造物はケーソンで説明するが、必ずしもケーソンに限るものではなく、L型ブロックのような構造物でもよい。
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an enlarged sectional explanatory view showing an embodiment of the present invention, FIG. 2 is a main part explanatory view, and FIG. 3 is a side explanatory view.
In the figure, reference numeral 1 denotes a concrete caisson that is a structure, which is slightly from the corner of one or both outer surfaces of the adjacent caisson 2 of the adjacent caisson whose foundation is solidified by asphalt mixture or the like. An embedded plate 4 made of stainless steel or the like having anchor bars 3 at predetermined intervals is attached to the outer surface on the outer side over the entire length in the vertical direction, and the surface of the plate is exposed on the same surface as the concrete surface. In addition, although the structure of this description demonstrates by a caisson, it is not necessarily restricted to a caisson, A structure like an L-type block may be sufficient.

5はステンレス製等の取付けプレートであり、前記埋め込みプレート4に溶接により一体に取り付けてあり、その内側端部をケーソン1の目地側の端面より突出しない程度に位置させてある。
6は止水目地材であり、目地を形成する両側のケーソン1の前記取付けプレート5に取り付けて目地を閉じるもので、その取付け構造は、目地の変位に対応できるようにたるみ7をもたせた状態にして取付けプレート5に接着やボルトとナット等によって確実に取付ける。その材質は可撓性を有し、水を通さない材料であればよく、ゴム、合成樹脂材等の薄板状体やシート状体である。
Reference numeral 5 denotes a mounting plate made of stainless steel or the like, which is integrally attached to the embedded plate 4 by welding, and is positioned so as not to protrude from the end face of the caisson 1 on the joint side.
6 is a water-stop joint material, which is attached to the mounting plates 5 of the caisson 1 on both sides forming the joint, and closes the joint. The attachment structure has a slack 7 so as to cope with the displacement of the joint. Then, it is securely attached to the mounting plate 5 by bonding or bolts and nuts. The material may be a material that is flexible and impermeable to water, and is a thin plate or sheet material such as rubber or synthetic resin material.

なお、ケーソン1の相対向する角部は、図示する如く、切り落として斜面8を形成しておくと前記止水目地材6のたるみ7の納まりがよく、また、目地の変位によってケーソンの角が止水目地材6に当接して破損させるような悪い影響を与えることがない。
9は耐圧目地材であり、目地を形成する両側のケーソン1の前記埋め込みプレート4から取付けプレート5、止水目地材6のすべてを外側から覆うように設けてある。その取り付け状態は、両側をそれぞれアンカーボルト11等によってケーソン1に取り付けて固定してあり、ケーソン1の移動に対応できるように移動代10が形成されている。その材質は可撓性を有し、水を通さない材料であればよく、ゴム、合成樹脂材等の板状体であり、必要に応じてその板状体の中に、天然繊維、合成繊維等による織布や不織布をそのゴムや合成樹脂と積層させたものでもよい。
As shown in the figure, the opposite corners of the caisson 1 are cut off to form a slope 8 so that the slack 7 of the water-stopping joint material 6 can be stored well. There is no adverse effect such as contact with the waterproof joint material 6 to cause damage.
Reference numeral 9 denotes a pressure-resistant joint material, which is provided so as to cover all the mounting plate 5 and the water-stop joint material 6 from the embedded plate 4 of the caisson 1 on both sides forming the joint. As for the attachment state, both sides are respectively attached and fixed to the caisson 1 with anchor bolts 11 or the like, and a movement allowance 10 is formed so as to correspond to the movement of the caisson 1. The material may be a material that is flexible and impervious to water, and is a plate-like body such as rubber or synthetic resin material. If necessary, natural or synthetic fibers may be included in the plate-like body. A woven fabric or non-woven fabric obtained by laminating with rubber or synthetic resin may be used.

また、前記移動代10は図面では蛇腹状に形成してあるが、どのような形状でもよく、図2に示すような単に湾曲状にたわませたようなものでもよい。
このような構成の目地の遮水構造によると、ケーソン間の目地は耐圧目地材9と止水目地材5の二重構造によって、遮水されるもので、水圧、波圧、埋立て材等の土圧等に対しては耐圧目地材9によって対応するために止水目地材6は、目地間の遮水効果が高まると共に耐久性が向上する。
Further, although the movement allowance 10 is formed in a bellows shape in the drawing, it may have any shape, and may be a shape that is simply bent in a curved shape as shown in FIG.
According to the water-insulating structure of the joint having such a structure, the joint between the caisson is water-insulated by the double structure of the pressure-resistant joint material 9 and the water-stop joint material 5, such as water pressure, wave pressure, landfill material, etc. In order to cope with the earth pressure and the like by the pressure-resistant joint material 9, the water-stop joint material 6 increases the water shielding effect between the joints and improves the durability.

そこで、不等沈下等によってケーソン1が移動して目地間隔に変位が生じた場合、その変位に対して、止水目地材6はそのたるみ7で、耐圧目地材9はその移動代10によって対応することができ、遮水性能は維持できる。
また、図示しないが、目地間には通常、アスファルト混合物等の不透水性材料からなる充填材が充填されるもので、その充填材の圧力を止水目地材6が内側から受けることになる。
Therefore, when the caisson 1 moves due to unequal subsidence or the like and displacement occurs in the joint interval, the waterproof joint material 6 responds to the displacement by the slack 7 and the pressure joint material 9 responds by the movement allowance 10. The water shielding performance can be maintained.
Moreover, although not shown in figure, the filling material which consists of water-impermeable materials, such as an asphalt mixture, is normally filled between joints, and the waterproof joint material 6 receives the pressure of the filling material from an inner side.

なお、上記の構成において、取付けプレート5を省き、埋め込みプレート4に止水目地材6を直接取り付けた構造としてもよい。   In the above configuration, the mounting plate 5 may be omitted, and the waterproof joint material 6 may be directly attached to the embedded plate 4.

実施例を示す拡大説明図Expanded explanatory drawing showing an example 実施例を示す要部説明図Main part explanatory drawing which shows an Example 側面説明図Side view

符号の説明Explanation of symbols

1 ケーソン
2 側壁
3 アンカー筋
4 埋め込みプレート
5 取付けプレート
6 止水目地材
7 たるみ
8 斜面
9 耐圧目地材
10 移動代
11 アンカーボルト
DESCRIPTION OF SYMBOLS 1 Caisson 2 Side wall 3 Anchor reinforcement 4 Embedding plate 5 Mounting plate 6 Water-stop joint material 7 Slack 8 Slope 9 Pressure joint material 10 Movement allowance 11 Anchor bolt

Claims (1)

連続配置したケーソンやL型ブロック等の構造物の目地を構成する互いに対向する角部にそれぞれ斜面を形成すると共に側壁の外面に、目地に沿って所定間隔に埋め込みプレートを取り付け、その対向する埋め込みプレートに可撓性を有する止水目地材の側部をそれぞれ固着させてたるみを形成し、そのたるみを目地および前記斜面によって形成された空間内に納め、さらに、前記埋め込みプレートを外側から覆うように移動代を有する可撓性の耐圧目地材の両側をそれぞれ構造物の側壁の外面に固着させたことを特徴とする目地の遮水構造。 Slopes are formed at opposite corners constituting the joints of structures such as caisson and L-shaped blocks that are continuously arranged, and embedded plates are attached to the outer surface of the side walls at predetermined intervals along the joints, and the opposing embedded parts Each side of the waterproof joint material having flexibility is fixed to the plate to form a slack, and the slack is stored in the space formed by the joint and the slope, and further, the embedded plate is covered from the outside. A waterproof structure for joints, wherein both sides of a flexible pressure-resistant joint material having a movement allowance are fixed to the outer surfaces of the side walls of the structure.
JP2004185366A 2004-06-23 2004-06-23 Impermeable structure for joints Expired - Lifetime JP4401249B2 (en)

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JP4401249B2 true JP4401249B2 (en) 2010-01-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812545A (en) * 2017-03-06 2017-06-09 北京交通大学 A kind of tunnel aseismatic joint water guide formula waterstop

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4927766B2 (en) * 2008-01-22 2012-05-09 西武ポリマ化成株式会社 Joint structure for upper and lower split caisson and its construction method
CN101956397A (en) * 2010-09-30 2011-01-26 同济大学 Construction method for closing structure between extra caisson structures in soil or water
JP6605931B2 (en) * 2015-11-24 2019-11-13 西武ポリマ化成株式会社 Joint structure of structure
JP7295348B1 (en) * 2023-01-30 2023-06-20 五洋建設株式会社 Water stop structure in NDR construction method and its design method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812545A (en) * 2017-03-06 2017-06-09 北京交通大学 A kind of tunnel aseismatic joint water guide formula waterstop

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