JP6838860B2 - Joint material and construction method of joint material - Google Patents

Joint material and construction method of joint material Download PDF

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JP6838860B2
JP6838860B2 JP2016040264A JP2016040264A JP6838860B2 JP 6838860 B2 JP6838860 B2 JP 6838860B2 JP 2016040264 A JP2016040264 A JP 2016040264A JP 2016040264 A JP2016040264 A JP 2016040264A JP 6838860 B2 JP6838860 B2 JP 6838860B2
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sealing material
bag body
joint material
joint
superstructure
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和木　多克
多克 和木
亘 大橋
亘 大橋
新 城戸崎
新 城戸崎
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西武ポリマ化成株式会社
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/30—Landfill technologies aiming to mitigate methane emissions

Description

本発明は、目地材及び目地材の構築方法に関する。 The present invention relates to a joint material and a method for constructing a joint material.

護岸又は岸壁に用いられるケーソン式及びブロック式などの重力式構造物において、目地間に裏込材及び裏埋め材（土砂、廃棄物等）、遮水材の吸出しや流出防止として、円筒状目地材が用いられている（例えば、特許文献１）。 In gravity type structures such as caisson type and block type used for revetments or quays, cylindrical joints are used to prevent suction and outflow of backing materials, backfilling materials (earth and sand, waste, etc.) and impermeable materials between joints. A material is used (for example, Patent Document 1).

円筒状目地材は、中空円筒形状であり、中空円筒内にアスファルトマスチック等の中詰材を投入・充填することで、円筒状目地材を拡幅する。これにより、中詰材の内圧により円筒状目地材とケーソン妻壁面とが密着し、摩擦抵抗により、裏込材等の圧力に耐える構造である。 The cylindrical joint material has a hollow cylindrical shape, and the cylindrical joint material is widened by inserting and filling a filling material such as asphalt mastic into the hollow cylinder. As a result, the cylindrical joint material and the caisson end wall surface are brought into close contact with each other due to the internal pressure of the filling material, and the structure is such that the pressure of the backing material or the like can be withstood by the frictional resistance.

特開２００７−２１１５４５号公報Japanese Unexamined Patent Publication No. 2007-21145

管理型廃棄物埋立護岸では、目地部鉛直遮水工として、円筒状目地材を上部工天端からケーソン下端まで取り付ける。このとき、上部工とケーソンとの打継部等において、ケーソン妻壁面に段差が生じる場合がある。この段差により、目地材と上部工又はケーソンとの間に隙間が生じる。また、円筒状目地材と下方のマウンド層との間にも隙間が生じる場合がある。 In the controlled waste landfill revetment, a cylindrical joint material is attached from the top of the superstructure to the bottom of the caisson as a vertical water shield at the joint. At this time, a step may occur on the wall surface of the caisson wife at the joint between the superstructure and the caisson. This step creates a gap between the joint material and the superstructure or caisson. In addition, a gap may be formed between the cylindrical joint material and the lower mound layer.

これらの隙間は、裏込材等が吸い出されたり、流出したりする原因となる。吸い出されたり、流出したりすると、埋立地の地盤沈下又は海洋汚濁といった問題が起こる。また、管理型廃棄物埋立護岸においては、遮水材が目地間から流出するおそれがある。流出した場合、遮水材の再充填を行い、性能規定を満足させるための修復工を行わなければならず、維持管理コストの増加に繋がる。 These gaps cause the backing material and the like to be sucked out or flow out. When sucked out or spilled, problems such as land subsidence or marine pollution occur in landfills. In addition, in the managed waste landfill revetment, there is a risk that the impermeable material will flow out from between the joints. If it spills, the impermeable material must be refilled and repair work must be performed to satisfy the performance regulations, leading to an increase in maintenance costs.

本発明は、上記課題に鑑みてなされたものであって、円筒状目地材とケーソン妻壁面及び／又はマウンド層との隙間を効果的に埋め、密着させることが可能な目地材及び目地材の構築方法を提供することを目的とする。 The present invention has been made in view of the above problems, and is a joint material and a joint material capable of effectively filling a gap between a cylindrical joint material and a caisson wife wall surface and / or a mound layer and bringing them into close contact with each other. The purpose is to provide a construction method.

上記目的を達成するため、本発明の第１の観点に係る目地材は、
マウンド層上に立設された対向する構造物の間隙である目地部に挿入される目地材であって、
可撓性を有し中詰材が充填されることで拡幅し前記構造物又は前記マウンド層と接する袋体と、
前記袋体の外面上に配置され、拡幅の際に前記袋体と対面する前記構造物又は前記マウンド層の面の段差部又は凹凸部に接してシールするシール材と、を備え、
前記袋体は、開口部から見た断面が長円形となるように形成されており、
前記シール材は、前記長円形の長辺部における前記袋体の側面上に配置された側面用シール材を含み、
前記シール材の変形は、前記袋体の変形よりも前記段差部又は前記凹凸部に追随しやすい、
ことを特徴とする。 In order to achieve the above object, the joint material according to the first aspect of the present invention is
A joint material that is inserted into a joint that is a gap between opposing structures erected on the mound layer.
A bag body that is flexible and widens by being filled with a filling material and is in contact with the structure or the mound layer.
A sealing material which is arranged on the outer surface of the bag body and which is in contact with the stepped portion or the uneven portion of the surface of the structure or the mound layer facing the bag body when widening is provided.
The bag body is formed so that the cross section seen from the opening is oval.
The sealing material includes a side sealing material arranged on the side surface of the bag body at the long side portion of the oval.
The deformation of the sealing material is more likely to follow the stepped portion or the uneven portion than the deformation of the bag body.
It is characterized by that.

前記側面用シール材の幅は前記長辺部の幅よりも小さい、
こととしてもよい。 The width of the side sealing material is smaller than the width of the long side.
It may be that.

前記構造物は、上部工と下部工との積層体であり、
前記側面用シール材は、前記上部工と前記下部工とに跨るように配置される、
こととしてもよい。 The structure is a laminated body of superstructure and substructure, and is
The side sealing material is arranged so as to straddle the superstructure and the substructure.
It may be that.

前記シール材は、前記袋体の底部の下面に配置された下面用シール材を含み、
前記底部は、前記袋体内へ前記中詰材が充填される前には前記下面用シール材とともに前記袋体の内側に向かって内挿されている、
こととしてもよい。 The sealing material includes a lower surface sealing material arranged on the lower surface of the bottom of the bag body.
The bottom portion is interpolated toward the inside of the bag body together with the lower surface sealing material before the filling material is filled in the bag body.
It may be that.

前記下面用シール材の幅は、前記下面のシール方向における幅よりも小さい、
こととしてもよい。 The width of the lower surface sealing material is smaller than the width of the lower surface in the sealing direction.
It may be that.

上記目的を達成するため、本発明の第２の観点に係る目地材の構築方法は、
マウンド層上に立設された対向する構造物の間隙である目地部において、
可撓性を有し拡幅可能な袋体を備える目地材の外面に、拡幅の際に前記袋体と対面する前記構造物又は前記マウンド層の面の段差部又は凹凸部に対応する位置に、前記袋体の変形よりも前記段差部又は前記凹凸部に追随しやすく変形するシール材を配置し、
前記目地材を前記目地部に挿入して前記袋体内に中詰材を充填し、
前記袋体は、開口部から見た断面が長円形となるように形成されており、
前記シール材は、前記長円形の長辺部における前記袋体の側面上に配置された側面用シール材を含む、
ことを特徴とする。 In order to achieve the above object, the method for constructing a joint material according to the second aspect of the present invention is
In the joints, which are the gaps between the opposing structures erected on the mound layer
On the outer surface of the joint material provided with the flexible and widenable bag body, at a position corresponding to the stepped portion or uneven portion of the surface of the structure or the mound layer facing the bag body at the time of widening. A sealing material that deforms more easily to follow the stepped portion or the uneven portion than the deformation of the bag body is arranged.
The joint material is inserted into the joint portion, and the bag is filled with the filling material.
The bag body is formed so that the cross section seen from the opening is oval.
The sealing material includes a side sealing material arranged on the side surface of the bag body at the long side portion of the oval.
It is characterized by that.

本発明によれば、円筒状目地材とケーソン妻壁面及び／又はマウンド層との隙間を効果的に埋め、密着させることが可能な目地材及び目地材の構築方法が得られる。 According to the present invention, it is possible to obtain a method for constructing a joint material and a joint material capable of effectively filling the gap between the cylindrical joint material and the caisson end wall surface and / or the mound layer and bringing them into close contact with each other.

本発明の第１実施形態に係る円筒状目地材を示す断面図である。It is sectional drawing which shows the cylindrical joint material which concerns on 1st Embodiment of this invention. （ａ）〜（ｃ）は、第１実施形態に係る円筒状目地材の取付構造を示す図である。(A)-(c) is a figure which shows the attachment structure of the cylindrical joint material which concerns on 1st Embodiment. 第１実施形態に係る円筒状目地材の使用例を示す断面図である。It is sectional drawing which shows the use example of the cylindrical joint material which concerns on 1st Embodiment. （ａ）〜（ｄ）は、円筒状目地材の変形例を示す断面図である。(A) to (d) are cross-sectional views showing a modified example of a cylindrical joint material. 本発明の第２実施形態に係る円筒状目地材を示す断面図である。It is sectional drawing which shows the cylindrical joint material which concerns on 2nd Embodiment of this invention. （ａ）〜（ｃ）は、第２実施形態に係る円筒状目地材の取付構造を示す図である。(A)-(c) is a figure which shows the attachment structure of the cylindrical joint material which concerns on 2nd Embodiment. （ａ）は本発明の第３実施形態に係る円筒状目地材の取付構造を示す断面図であり、（ｂ）は変形例の円筒状目地材の取付構造を示す断面図である。(A) is a cross-sectional view showing a mounting structure of a cylindrical joint material according to a third embodiment of the present invention, and (b) is a cross-sectional view showing a mounting structure of a cylindrical joint material of a modified example. 本発明の第４実施形態に係る円筒状目地材の取付構造を示す断面図である。It is sectional drawing which shows the attachment structure of the cylindrical joint material which concerns on 4th Embodiment of this invention. 図８に示す円筒状目地材が拡幅した状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which the cylindrical joint material shown in FIG. 8 is widened. （ａ），（ｂ）は、本発明の第５実施形態に係る円筒状目地材の取付構造を示す断面図である。(A) and (b) are sectional views which show the attachment structure of the cylindrical joint material which concerns on 5th Embodiment of this invention.

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

（第１実施形態）
図１に示すように、円筒状目地材１００は、円筒部１１と、下袋部１２と、ヒレ部１３と、取付孔１４と、シール材１５と、を備える。 (First Embodiment)
As shown in FIG. 1, the cylindrical joint material 100 includes a cylindrical portion 11, a lower bag portion 12, a fin portion 13, a mounting hole 14, and a sealing material 15.

円筒部１１は、拡幅した場合に円筒状、特に本明細書では長円状となるように形成された部分である。円筒部１１の上部側の端部は開口しており、下部側の端部には円筒部１１と一体に形成された底部である下袋部１２が設けられている。従って、円筒状目地材１００は、円筒部１１と下袋部１２とで袋体をなしている。 The cylindrical portion 11 is a portion formed so as to be cylindrical when widened, particularly to be oval in the present specification. The upper end of the cylindrical portion 11 is open, and the lower end is provided with a lower bag portion 12 which is a bottom portion integrally formed with the cylindrical portion 11. Therefore, in the cylindrical joint material 100, the cylindrical portion 11 and the lower bag portion 12 form a bag body.

円筒部１１は、伸縮性及び柔軟性を有するゴムと補強用の合成繊維との複合材料として可撓性を有するように構成されている。下袋部１２は、ゴムから形成されている。下袋部１２は後述するマウンド層２１の不陸に追随できることが好ましいため、円筒部１１よりも柔軟性が高くなるように形成されている。 The cylindrical portion 11 is configured to have flexibility as a composite material of elastic and flexible rubber and synthetic fibers for reinforcement. The lower bag portion 12 is made of rubber. Since it is preferable that the lower bag portion 12 can follow the non-landing of the mound layer 21 described later, the lower bag portion 12 is formed to have higher flexibility than the cylindrical portion 11.

円筒部１１の背面側（本明細書では後述するケーソン２２ａ、上部工２３ａに対面する側）に円筒部１１と一体に形成されたヒレ部１３が設けられている。ヒレ部１３は、円筒部１１の正面側（本明細書では後述するケーソン２２ｂ、上部工２３ｂに対面する側）から見たときに左右にそれぞれ突出した平板部である。ヒレ部１３の幅は、上下に亘って均一であるが、円筒状目地材１００が取り付けられる相手側部材の状態等により任意の形状としてよい。 A fin portion 13 integrally formed with the cylindrical portion 11 is provided on the back surface side of the cylindrical portion 11 (the side facing the caisson 22a and the superstructure 23a described later in the present specification). The fin portion 13 is a flat plate portion that protrudes to the left and right when viewed from the front side of the cylindrical portion 11 (the side facing the caisson 22b and the superstructure 23b described later in the present specification). The width of the fin portion 13 is uniform over the top and bottom, but may be any shape depending on the state of the mating member to which the cylindrical joint material 100 is attached.

ヒレ部１３は、円筒部１１と同様にゴムと補強用の合成繊維との複合材料として構成されている。 Like the cylindrical portion 11, the fin portion 13 is configured as a composite material of rubber and synthetic fibers for reinforcement.

左右のヒレ部１３には、それぞれ複数個の取付孔１４が形成されている。取付孔１４は、円筒状目地材１００の上下方向に所定の間隔で配置されており、後述する締結部材２４が挿通するようになっている。 A plurality of mounting holes 14 are formed in the left and right fin portions 13, respectively. The mounting holes 14 are arranged at predetermined intervals in the vertical direction of the cylindrical joint material 100, and a fastening member 24 described later is inserted therethrough.

シール材１５は、円筒部１１の正面側の外側面上に設けられている側面用シール材である。シール材１５は、ゴム等の変形可能な材料又は水膨張ゴム等の膨張する材料等で構成されている。即ち、シール材１５は、円筒部１１の材料に比べてより段差を吸収しやすい材料から形成される。 The sealing material 15 is a side surface sealing material provided on the outer surface on the front side of the cylindrical portion 11. The sealing material 15 is made of a deformable material such as rubber, an expandable material such as water-expandable rubber, or the like. That is, the sealing material 15 is formed of a material that easily absorbs the step as compared with the material of the cylindrical portion 11.

シール材１５は、例えば加硫接着によって円筒部１１に接着されている。本実施形態では、シール材１５は、均一な幅及び厚さを有する上下方向に延びる帯状部材として形成されている。その他、シール材１５に接する相手側部材の状態に合わせて、不均一な幅及び／又は厚さとしてもよい。 The sealing material 15 is adhered to the cylindrical portion 11 by, for example, vulcanization adhesion. In the present embodiment, the sealing material 15 is formed as a strip-shaped member having a uniform width and thickness and extending in the vertical direction. In addition, the width and / or thickness may be non-uniform according to the state of the mating member in contact with the sealing material 15.

図２（ａ）〜（ｃ）に、円筒状目地材１００の取付構造の例を示す。図２（ａ）は上方から見た断面図であり、図２（ｂ）は正面から見た断面図であり、図２（ｃ）は側部から見た断面図である。 FIGS. 2 (a) to 2 (c) show an example of a mounting structure of the cylindrical joint material 100. FIG. 2A is a cross-sectional view seen from above, FIG. 2B is a cross-sectional view seen from the front, and FIG. 2C is a cross-sectional view seen from a side portion.

マウンド層２１上にケーソン２２ａ及びケーソン２２ｂが設置されており、それらの上にそれぞれ上部工２３ａ及び上部工２３ｂが積層されている。ケーソン２２ａ，上部工２３ａとケーソン２２ｂ，上部工２３ｂとは、それぞれ所定の幅の間隙が設けられるように対向している。なお、以下の説明において、ケーソン２２及び上部工２３の末尾「ａ」は円筒状目地材１００が背面側において取り付けられる側であり、末尾「ｂ」は円筒状目地材１００の正面側に対面する側である。 A caisson 22a and a caisson 22b are installed on the mound layer 21, and a superstructure 23a and a superstructure 23b are laminated on them, respectively. The caisson 22a and the superstructure 23a and the caisson 22b and the superstructure 23b face each other so as to provide a gap having a predetermined width. In the following description, the end "a" of the caisson 22 and the superstructure 23 is the side to which the cylindrical joint material 100 is attached on the back side, and the end "b" faces the front side of the cylindrical joint material 100. On the side.

円筒状目地材１００は、ケーソン２２ａ及び上部工２３ａに対して、複数個のボルトである締結部材２４で固定されている。固定に際し、例えば帯状の鋼材から形成され締結部材２４及び取付孔１４に対応する位置及び大きさを有する押さえ板２５によって、ヒレ部１３がケーソン２２ａ及び上部工２３ａに対して押さえつけられている。押さえ板２５は、図示されるように上下方向に分割して配置することとしてもよい。 The cylindrical joint material 100 is fixed to the caisson 22a and the superstructure 23a by fastening members 24 which are a plurality of bolts. At the time of fixing, the fin portion 13 is pressed against the caisson 22a and the superstructure 23a by, for example, a pressing plate 25 formed of a strip-shaped steel material and having a position and a size corresponding to the fastening member 24 and the mounting hole 14. The pressing plate 25 may be divided and arranged in the vertical direction as shown in the drawing.

図２の例では、ケーソン２２ａと上部工２３ａとは略同一平面となるように積層されているのに対し、ケーソン２２ｂと上部工２３ｂとは段差が形成されるように積層されている。具体的には、ケーソン２２ｂの妻壁面に対して上部工２３ｂの妻壁面が後退している。そのため、円筒部１１と上部工２３ｂとの間に隙間が発生しやすい。 In the example of FIG. 2, the caisson 22a and the superstructure 23a are laminated so as to be substantially flush with each other, whereas the caisson 22b and the superstructure 23b are laminated so as to form a step. Specifically, the wife wall surface of the superstructure 23b recedes from the wife wall surface of the caisson 22b. Therefore, a gap is likely to occur between the cylindrical portion 11 and the superstructure 23b.

円筒状目地材１００の袋体の部分には中詰材２６が充填されている。これにより、円筒部１１がケーソン２２ｂ及び上部工２３ｂに向かって拡幅し、中詰材２６の圧力により円筒状目地材１００とケーソン２２ｂ、上部工２３ｂ及びマウンド層２１との間の主要な隙間が埋められる。 The filling material 26 is filled in the bag body portion of the cylindrical joint material 100. As a result, the cylindrical portion 11 widens toward the caisson 22b and the superstructure 23b, and the pressure of the filling material 26 creates a major gap between the cylindrical joint material 100 and the caisson 22b, the superstructure 23b, and the mound layer 21. It will be filled.

中詰材２６は、例えばアスファルトマスチックなどの一般的な中詰材である。 The filling material 26 is a general filling material such as asphalt mastic.

しかし、このような場合、上部工天端付近では中詰材２６の圧力が低く、中詰材２６の粘性及び円筒状目地材１００の剛性が中詰材２６の圧力に勝っている状態となり、円筒状目地材１００が追随せず、隙間が生じるおそれがある。そのため、円筒状目地材とケーソン妻壁面に隙間が生じることを防ぐためのシール構造を提供することが好ましい。 However, in such a case, the pressure of the filling material 26 is low near the top of the superstructure, and the viscosity of the filling material 26 and the rigidity of the cylindrical joint material 100 are higher than the pressure of the filling material 26. The cylindrical joint material 100 may not follow and a gap may occur. Therefore, it is preferable to provide a sealing structure for preventing a gap between the cylindrical joint material and the caisson end wall surface.

円筒状目地材１００は、ケーソン２２ｂと上部工２３ｂとの段差に基づく隙間を埋めるように、上部工２３ａの高さと略同じ長さのシール材１５を備える。シール材１５の厚さは、シール材１５が変形して潰れることで隙間を埋めるように、円筒部１１と上部工２３ｂとの隙間の厚さよりも大きくなっている。 The cylindrical joint material 100 includes a sealing material 15 having a length substantially the same as the height of the superstructure 23a so as to fill a gap based on a step between the caisson 22b and the superstructure 23b. The thickness of the sealing material 15 is larger than the thickness of the gap between the cylindrical portion 11 and the superstructure 23b so that the sealing material 15 is deformed and crushed to fill the gap.

なお、図２では下袋部１２の下面のほぼ全体を覆うように下面用シール材１５ｈが設けられているが、これについては後述する。 In FIG. 2, the lower surface sealing material 15h is provided so as to cover almost the entire lower surface of the lower bag portion 12, which will be described later.

図２（ａ）〜（ｃ）の取付構造の実施例を図３に示す。上部工２３ａ（及びケーソン２２ａ）と上部工２３ｂ（及びケーソン２２ｂ）との間の目地部３０は、第１の間隙３１と、より幅の広い第２の間隙３２と、が交互に配置されて構成されている。下方には、図２（ａ）〜（ｃ）と同様にマウンド層２１が設けられている。 An embodiment of the mounting structure of FIGS. 2 (a) to 2 (c) is shown in FIG. In the joint portion 30 between the superstructure 23a (and the caisson 22a) and the superstructure 23b (and the caisson 22b), the first gap 31 and the wider second gap 32 are alternately arranged. It is configured. A mound layer 21 is provided below as in FIGS. 2 (a) to 2 (c).

第２の間隙３２挟んで両側の第１の間隙３１にそれぞれ円筒状目地材１００が配置される。図３の例では、１箇所の第１の間隙３１に対し円筒状目地材１００が２個配置されている。円筒状目地材１００によってシールされた第２の間隙３２には、遮水材３３が充填されている。このように、遮水材３３とその両側の円筒状目地材１００（及び中詰材２６）との組み合わせを複数組設けることにより目地部３０における遮水が行われる。 Cylindrical joint material 100 is arranged in each of the first gaps 31 on both sides of the second gap 32. In the example of FIG. 3, two cylindrical joint members 100 are arranged with respect to the first gap 31 at one location. The second gap 32 sealed by the cylindrical joint material 100 is filled with the impermeable material 33. In this way, water shielding at the joint portion 30 is performed by providing a plurality of combinations of the water blocking material 33 and the cylindrical joint material 100 (and the filling material 26) on both sides thereof.

このように、本実施形態によれば、円筒状目地材１００が備えるシール材１５によってケーソン２２ｂと上部工２３ｂとの段差を吸収し、隙間を効果的に埋めることができる。これにより、シール方向（図２（ａ）の左右方向）において高いシール効果が得られる。 As described above, according to the present embodiment, the sealing material 15 provided in the cylindrical joint material 100 can absorb the step between the caisson 22b and the superstructure 23b and effectively fill the gap. As a result, a high sealing effect can be obtained in the sealing direction (left-right direction in FIG. 2A).

図４（ａ）〜（ｄ）に、シール材１５（１５ａ，１５ｂ，１５ｃ，１５ｄ）の大きさ又は円筒状目地材１００の上部工２３（又はケーソン２２）への取付状態に基づく変形例を示す。 4 (a) to 4 (d) show a modified example based on the size of the sealing material 15 (15a, 15b, 15c, 15d) or the mounting state of the cylindrical joint material 100 to the superstructure 23 (or caisson 22). Shown.

図４（ａ）は、図２（ａ）〜（ｃ）に相当する例である。図４（ｂ）は、円筒状目地材１００の円筒部１１が拡幅したときにシール材１５ｂの両側に回り込んでいる。この場合でもシール材１５ｂによるシール効果は変わらず、上部工２３ｂに接する円筒部１１によってさらにシール効果が確保される。図４（ｃ）は、シール材１５ｃの幅が図４（ｂ）のシール材１５ｂの幅よりさらに小さく、断面の角に丸みが設けられている。また、シール材１５ｃの両側への円筒部１１の回り込みは図４（ｂ）の場合より大きく、即ち円筒部１１と上部工２３ｂとの接触面積も大きくなっている。このような場合でもシール効果が確保されることは図４（ｂ）と同様である。また、図４（ｄ）に示すように、シール材１５ｄの幅が円筒部１１の対応する幅と略同じであるかさらに広くなるように構成することもできる。 FIG. 4A is an example corresponding to FIGS. 2A to 2C. In FIG. 4B, when the cylindrical portion 11 of the cylindrical joint material 100 is widened, it wraps around both sides of the sealing material 15b. Even in this case, the sealing effect of the sealing material 15b does not change, and the sealing effect is further secured by the cylindrical portion 11 in contact with the superstructure 23b. In FIG. 4C, the width of the sealing material 15c is further smaller than the width of the sealing material 15b of FIG. 4B, and the corners of the cross section are rounded. Further, the wraparound of the cylindrical portion 11 to both sides of the sealing material 15c is larger than that in the case of FIG. 4B, that is, the contact area between the cylindrical portion 11 and the superstructure 23b is also larger. Even in such a case, the sealing effect is ensured as in FIG. 4 (b). Further, as shown in FIG. 4D, the width of the sealing material 15d can be configured to be substantially the same as or wider than the corresponding width of the cylindrical portion 11.

（第２実施形態）
第１実施形態では、上部工２３ｂの妻壁面がケーソン２２ｂの妻壁面に対して後退している。それに加えて、上部工２３ａの妻壁面がケーソン２２ａの妻壁面に対して後退していると、ケーソン２２ａとケーソン２２ｂとの間隔に比べて上部工２３ａと上部工２３ｂとの間隔がより拡がってしまうことになる。 (Second Embodiment)
In the first embodiment, the wife wall surface of the superstructure 23b is retracted with respect to the wife wall surface of the caisson 22b. In addition, when the wife wall surface of the superstructure 23a is retracted with respect to the wife wall surface of the caisson 22a, the distance between the superstructure 23a and the superstructure 23b is wider than the distance between the caisson 22a and the caisson 22b. It will end up.

このような場合にも、上部工天端付近では中詰材２６の圧力が低く、中詰材２６の粘性及び円筒状目地材１００の剛性が中詰材２６の圧力に勝っている状態となり、円筒状目地材１００が追随、隙間が生じるおそれがある。そのため、円筒状目地材とケーソン妻壁面に隙間が生じることを防ぐためのシール構造を提供することが好ましい。 Even in such a case, the pressure of the filling material 26 is low near the top of the superstructure, and the viscosity of the filling material 26 and the rigidity of the cylindrical joint material 100 are higher than the pressure of the filling material 26. The cylindrical joint material 100 may follow and a gap may be generated. Therefore, it is preferable to provide a sealing structure for preventing a gap between the cylindrical joint material and the caisson end wall surface.

図５に示すように、第２実施形態に係る円筒状目地材１００は、正面側のシール材１５に加え、背面側の外側面上に背面用シール材１５ｅが設けられていることにおいて、第１実施形態と異なっている。 As shown in FIG. 5, in the cylindrical joint material 100 according to the second embodiment, in addition to the sealing material 15 on the front side, the sealing material 15e for the back surface is provided on the outer surface on the back side. It is different from one embodiment.

背面用シール材１５ｅは、例えばシール材１５と同じ材料から形成されており、シール材１５と同様に加硫接着等によって、円筒部１１の背面に接着された側面用シール材である。背面用シール材１５ｅは、図示ではシール材１５と同様の幅及び長さを有し上下方向に延びる帯状であるが、必ずしも同一の寸法である必要はなく、相手側部材の状況に応じて適宜決定することとしてよい。 The back surface sealing material 15e is formed of, for example, the same material as the sealing material 15, and is a side surface sealing material bonded to the back surface of the cylindrical portion 11 by vulcanization adhesion or the like like the sealing material 15. In the figure, the back surface sealing material 15e has the same width and length as the sealing material 15 and has a strip shape extending in the vertical direction, but it does not necessarily have to have the same dimensions, and it is appropriate depending on the situation of the mating member. It may be decided.

図６（ａ）〜（ｃ）に、第２実施形態に係る円筒状目地材１００の取付構造の例を示す。図６（ａ）は上方から見た断面図であり、図６（ｂ）は正面から見た断面図であり、図６（ｃ）は側部から見た断面図である。 6 (a) to 6 (c) show an example of the mounting structure of the cylindrical joint material 100 according to the second embodiment. 6 (a) is a cross-sectional view seen from above, FIG. 6 (b) is a cross-sectional view seen from the front, and FIG. 6 (c) is a cross-sectional view seen from a side portion.

図２（ｃ）ではケーソン２２ａと上部工２３ａとは略同一平面となっていたが、図６（ｃ）では上部工２３ａの妻壁面がケーソン２２ａの妻壁面に対して後退するように、ケーソン２２ａと上部工２３ａとが積層されている。 In FIG. 2 (c), the caisson 22a and the superstructure 23a were substantially on the same plane, but in FIG. 6 (c), the caisson so that the wife wall surface of the superstructure 23a recedes from the wife wall surface of the caisson 22a. 22a and superstructure 23a are laminated.

図２（ｂ）では背面用シール材１５ｅはちょうどシール材１５と重なって隠れているが、円筒部１１と上部工２３ａとの間に生じるおそれのある隙間を背面用シール材１５ｅによって埋めることで、いずれの妻壁面に対しても効果的にシールをすることができる。 In FIG. 2B, the back surface sealing material 15e just overlaps with the sealing material 15 and is hidden, but by filling the gap that may occur between the cylindrical portion 11 and the superstructure 23a with the back surface sealing material 15e. , It is possible to effectively seal any wife's wall surface.

なお、本実施形態では円筒部１１と上部工２３ａ及び上部工２３ｂの両方との隙間のシールについて説明したが、円筒部１１と上部工２３ｂのみとの隙間のシールにつき背面用シール材１５ｅを適用することとしてもよい。 In this embodiment, the sealing of the gap between the cylindrical portion 11 and both the superstructure 23a and the superstructure 23b has been described, but the back surface sealing material 15e is applied to seal the gap between the cylindrical portion 11 and the superstructure 23b only. You may do it.

（第３実施形態）
図７（ａ），（ｂ）に、ケーソン２２ｂの妻壁面が上部工２３ｂの妻壁面に対して後退するようにケーソン２２ｂと上部工２３ｂとが積層された例を示す。このように積層されると、円筒部１１とケーソン２２ｂとの間に隙間が生じやすい。 (Third Embodiment)
7 (a) and 7 (b) show an example in which the caisson 22b and the superstructure 23b are laminated so that the wife wall surface of the caisson 22b recedes with respect to the wife wall surface of the superstructure 23b. When laminated in this way, a gap is likely to occur between the cylindrical portion 11 and the caisson 22b.

図７（ａ）は、側面用シール材である帯状シール材１５ｆが円筒部１１の正面側の外側面上に設けられた例である。このようなシール構造は、第１実施形態で示したものとほぼ同様である。帯状シール材１５ｆは、図示された位置から下袋部１２付近まで延びている。 FIG. 7A is an example in which the band-shaped sealing material 15f, which is a side sealing material, is provided on the outer surface on the front side of the cylindrical portion 11. Such a seal structure is substantially the same as that shown in the first embodiment. The strip-shaped sealing material 15f extends from the position shown in the drawing to the vicinity of the lower bag portion 12.

図７（ｂ）は、図７（ａ）に比べてより局部的にシールをする例である。円筒状目地材１００の袋体の部分に中詰材２６を充填すると、中詰材２６の圧力で円筒部１１とケーソン２２ｂとの隙間はある程度の高さまで埋められるが、ケーソン２２ｂの上端部付近の隅部に隙間が残りやすい。これに対し、その隙間に対応する側面用シール材であるブロック状シール材１５ｇを円筒部１１に設けることで、図７（ａ）の場合と同様に隙間を埋めることができる。ブロック状シール材１５ｇの形状は例えば三角形として円筒状目地材１００が拡幅したときにブロック状シール材１５ｇの頂部付近が隅部を十分に埋められるようにすればよい。 FIG. 7B is an example of sealing more locally than in FIG. 7A. When the filling material 26 is filled in the bag body portion of the cylindrical joint material 100, the gap between the cylindrical portion 11 and the caisson 22b is filled to a certain height by the pressure of the filling material 26, but near the upper end portion of the caisson 22b. There is a tendency for gaps to remain in the corners of the. On the other hand, by providing the cylindrical portion 11 with 15 g of a block-shaped sealing material, which is a side sealing material corresponding to the gap, the gap can be filled as in the case of FIG. 7A. The shape of the block-shaped sealing material 15g may be, for example, a triangle so that when the cylindrical joint material 100 is widened, the corners of the block-shaped sealing material 15g near the top may be sufficiently filled.

なお、本実施形態では円筒部１１とケーソン２２ｂとの隙間について説明したが、円筒部１１とケーソン２２ａとの隙間について同様に帯状シール材１５ｆ又はブロック状シール材１５ｇを設けることとしてもよい。また、図４（ａ）〜図４（ｄ）のように帯状シール材１５ｆ又はブロック状シール材１５ｇの幅は任意とすることができるが、円筒部１１が正面側に比べて背面側の変形が少ないのであれば、帯状シール材１５ｆ又はブロック状シール材１５ｇで十分にシール作用を奏する幅とすることが好ましい。 Although the gap between the cylindrical portion 11 and the caisson 22b has been described in the present embodiment, the band-shaped sealing material 15f or the block-shaped sealing material 15g may be similarly provided for the gap between the cylindrical portion 11 and the caisson 22a. Further, as shown in FIGS. 4A to 4D, the width of the strip-shaped sealing material 15f or the block-shaped sealing material 15g can be arbitrary, but the cylindrical portion 11 is deformed on the back side as compared with the front side. If the amount is small, it is preferable that the band-shaped sealing material 15f or the block-shaped sealing material 15g has a width that sufficiently exerts a sealing action.

（第４実施形態）
円筒状目地材は一般に柔軟性に優れた下袋を備えており、下袋がケーソン下部のマウンド層に密着することで下端部でのシールを行う構造である。しかしながら、このマウンド層の均し精度による不陸が大きくなると、下袋は密着せず隙間が生じるおそれがある。本実施形態は、そのような円筒状目地材とマウンド層との間のシール性の向上に関するものである。 (Fourth Embodiment)
Cylindrical joint materials generally have a lower bag having excellent flexibility, and the lower bag has a structure in which the lower bag is in close contact with the mound layer at the lower end of the caisson to seal at the lower end. However, if the unevenness due to the leveling accuracy of the mound layer becomes large, the lower bag may not adhere to each other and a gap may occur. The present embodiment relates to improving the sealing property between such a cylindrical joint material and the mound layer.

図８に示すように、第４実施形態に係る円筒状目地材１００は、袋体の下袋部１２の下面に下面用シール材１５ｈを備える。下面用シール材１５ｈは、下袋部１２のほぼ全面を覆い、さらに円筒部１１の正面側の一部範囲を覆うように形成されている。 As shown in FIG. 8, the cylindrical joint material 100 according to the fourth embodiment includes a lower surface sealing material 15h on the lower surface of the lower bag portion 12 of the bag body. The lower surface sealing material 15h is formed so as to cover almost the entire surface of the lower bag portion 12 and further cover a part of the front side of the cylindrical portion 11.

下面用シール材１５ｈは、前述のシール材１５（１５ａ〜１５ｇ）と同様の材料から形成されることとしてもよい。下面用シール材１５ｈは下袋部１２よりもさらにマウンド層２１の不陸に追随しやすい柔軟性を有することが好ましい。 The lower surface sealing material 15h may be formed of the same material as the above-mentioned sealing material 15 (15a to 15g). It is preferable that the lower surface sealing material 15h has a flexibility that makes it easier to follow the non-landing of the mound layer 21 than the lower bag portion 12.

図８は中詰材２６を充填する前に円筒状目地材１００がケーソン２２ａ（及び上部工２３ａ）に取り付けられた状態を示す。取付作業を容易にするため、ロープ状、テープ状等として形成された結束材４２で円筒部１１、下袋部１２及び下面用シール材１５ｈが折り畳まれている。従って、この状態では円筒部１１より柔軟性の高い下袋部１２は袋体の内側に向かって突出するように内挿されている。 FIG. 8 shows a state in which the cylindrical joint material 100 is attached to the caisson 22a (and the superstructure 23a) before filling the filling material 26. In order to facilitate the attachment work, the cylindrical portion 11, the lower bag portion 12, and the lower surface sealing material 15h are folded by the binding material 42 formed in the shape of a rope, a tape, or the like. Therefore, in this state, the lower bag portion 12, which is more flexible than the cylindrical portion 11, is interpolated so as to project toward the inside of the bag body.

結束材４２は、ゴム又は樹脂等から形成されている。また、結束材４２は、円筒状目地材１００の折り畳みを維持し且つ中詰材２６が充填され円筒状目地材１００が拡幅した際には破断する程度の強度を有しており、その後は他の部材等に影響を及ぼさないことが好ましい。また、図示した以外にも下面用シール材１５ｈは、下袋部１２に例えばゴム用の接着剤で取付け、円筒状目地材１００が拡幅した際には、下面用シール材１５ｈと下袋部１２の接着部が剥離するようにしてもよい。この場合は、結束材４２がなくてもよい。 The binding material 42 is made of rubber, resin, or the like. Further, the binding material 42 maintains the folding of the cylindrical joint material 100 and has a strength such that it breaks when the filling material 26 is filled and the cylindrical joint material 100 is widened. It is preferable that it does not affect the members and the like. In addition to the illustrations, the lower surface sealing material 15h is attached to the lower bag portion 12 with, for example, an adhesive for rubber, and when the cylindrical joint material 100 is widened, the lower surface sealing material 15h and the lower bag portion 12 are used. The adhesive portion of the material may be peeled off. In this case, the binding material 42 may not be present.

図８の例では、マウンド層２１とその上の構造物との摩擦を増大させるためのマット４１が敷設されている。円筒状目地材１００の取付方法については、前述の実施形態と同一である。 In the example of FIG. 8, a mat 41 is laid to increase the friction between the mound layer 21 and the structure above it. The method of attaching the cylindrical joint material 100 is the same as that of the above-described embodiment.

図８の状態から円筒状目地材１００の袋体に中詰材２６を充填すると、円筒部１１はケーソン２２ｂに接するまで拡幅する。その際、内挿されていた下袋部１２が下方に向けて飛び出し、下袋部１２の下部に設けられた下面用シール材１５ｈが図９のようにマウンド層２１に接する。下面用シール材１５ｈは、前述のシール材１５と同様の材料から形成されており、下袋部１２と下袋部１２との間に生じ得る隙間を埋めることができる。 When the filling material 26 is filled in the bag body of the cylindrical joint material 100 from the state of FIG. 8, the cylindrical portion 11 widens until it comes into contact with the caisson 22b. At that time, the inserted lower bag portion 12 protrudes downward, and the lower surface sealing material 15h provided at the lower portion of the lower bag portion 12 comes into contact with the mound layer 21 as shown in FIG. The lower surface sealing material 15h is formed of the same material as the above-mentioned sealing material 15, and can fill a gap that may occur between the lower bag portion 12 and the lower bag portion 12.

なお、下面用シール材１５ｈは、図示した例以外でもマット４１及びケーソン２２ｂに接することとしてよい。 The bottom surface sealing material 15h may be in contact with the mat 41 and the caisson 22b in addition to the illustrated examples.

（第５実施形態）
第４実施形態では下面用シール材１５ｈが下袋部１２の下部の外面のほぼ全面を覆うように設けられていたが、本実施形態では下面用シール材１５ｈが下袋部１２の一部のみを覆う場合を示す。 (Fifth Embodiment)
In the fourth embodiment, the lower surface sealing material 15h is provided so as to cover almost the entire outer surface of the lower portion of the lower bag portion 12, but in the present embodiment, the lower surface sealing material 15h is provided only for a part of the lower bag portion 12. Shows the case of covering.

図１０に示すように、下面用シール材１５ｈは帯状又は棒状に形成されており、下袋部１２の一部のみを覆って設けられている。下面用シール材１５ｈの長手方向は、円筒状目地材１００が拡幅した場合にケーソン２２ａとケーソン２２ｂとの間を全てカバーできる長さである。また、円筒状目地材１００が拡幅した場合に下面用シール材１５ｈがマウンド層２１との間での裏込材等の漏れを十分に防止できる程度に変形することは第４実施形態と同様である。 As shown in FIG. 10, the lower surface sealing material 15h is formed in a band shape or a rod shape, and is provided so as to cover only a part of the lower bag portion 12. The longitudinal direction of the lower surface sealing material 15h is a length that can cover the entire space between the caisson 22a and the caisson 22b when the cylindrical joint material 100 is widened. Further, when the cylindrical joint material 100 is widened, the lower surface sealing material 15h is deformed to such an extent that leakage of the backing material or the like with the mound layer 21 can be sufficiently prevented, as in the fourth embodiment. is there.

本実施形態のように構成することで、下面用シール材１５ｈを小さくしてもシール方向（図１０の左右方向に相当）に対しては良好なシール効果が得られる。 With the configuration as in this embodiment, even if the lower surface sealing material 15h is made smaller, a good sealing effect can be obtained in the sealing direction (corresponding to the left-right direction in FIG. 10).

なお、本発明は上述した実施形態や具体例に限定されず、種々の変形及び応用が可能である。 The present invention is not limited to the above-described embodiments and specific examples, and various modifications and applications are possible.

例えば、前述の各実施形態で説明したシール材１５（１５ａ〜１５ｈを含む。）はそれぞれ組み合わせることができる。例えば、図２には、円筒部１１と上部工２３ｂとの間、及び、下袋部１２とマウンド層２１との間、にシール材１５を併用する例が図示されている。また、円筒部１１とケーソン２２ｂとの間と下袋部１２とマウンド層２１との間にシール材１５を併用することとしてよい。その他の例も含め、前述したシール材を任意に適用することとしてよい。 For example, the sealing materials 15 (including 15a to 15h) described in each of the above-described embodiments can be combined. For example, FIG. 2 shows an example in which the sealing material 15 is used in combination between the cylindrical portion 11 and the superstructure 23b and between the lower bag portion 12 and the mound layer 21. Further, the sealing material 15 may be used in combination between the cylindrical portion 11 and the caisson 22b and between the lower bag portion 12 and the mound layer 21. The above-mentioned sealing material may be arbitrarily applied, including other examples.

また、第１実施形態から第３実施形態のように側面用のシール材１５が積層体の上部工（２３ａ，２３ｂ）及び下部工（ケーソン２２ａ，２２ｂ）のいずれかのみをシールするように配置されるだけでなく、上部工と下部工とに跨るように、即ち上部工及び下部工のそれぞれ一部又は全部の高さに接するように配置されてもよい。例えば、シール材１５の長さを円筒状目地材１００全体の高さとしてもよい。この場合、シール材１５はケーソン２２ｂと上部工２３ｂとの両方に接するが、シール材１５の変形（及び円筒部１１の追随性）で段差を吸収できればよい。従って、このような構成とすれば、予め円筒状目地材１００にシール材１５を取り付けておくことが容易にできる。 Further, as in the first to third embodiments, the side sealing material 15 is arranged so as to seal only one of the superstructure (23a, 23b) and the substructure (caisson 22a, 22b) of the laminate. Not only that, it may be arranged so as to straddle the superstructure and the substructure, that is, to be in contact with a part or all of the height of each of the superstructure and the substructure. For example, the length of the sealing material 15 may be the height of the entire cylindrical joint material 100. In this case, the sealing material 15 is in contact with both the caisson 22b and the superstructure 23b, but it is sufficient that the step can be absorbed by the deformation of the sealing material 15 (and the followability of the cylindrical portion 11). Therefore, with such a configuration, the sealing material 15 can be easily attached to the cylindrical joint material 100 in advance.

また、円筒状目地材１００が拡幅した際にシール材１５と接する相手側の状態に応じて、シール材１５の形状は平坦なものだけでなく凹凸を有することとしてよい。 Further, the shape of the sealing material 15 may be not only flat but also uneven depending on the state of the mating side in contact with the sealing material 15 when the cylindrical joint material 100 is widened.

また、シール材１５以外に、他のシール機能を有する部材を併用することとしてもよい。例えば、下面用シール材１５ｈを用いる場合、マウンド層２１はケーソン等より凹凸が大きいことが想定されるので、下面用シール材１５ｈにさらにブラシ状の部材を取り付けることで、段差の吸収量（不陸に対する追随性）をより大きくすることができる。また、シール材１５が設けられていない円筒状目地材１００のスペースに別のシール部材を取り付けてもよい。 Further, in addition to the sealing material 15, other members having a sealing function may be used in combination. For example, when the bottom surface sealing material 15h is used, it is assumed that the mound layer 21 has larger irregularities than the caisson or the like. (Followability to land) can be increased. Further, another sealing member may be attached to the space of the cylindrical joint material 100 in which the sealing material 15 is not provided.

１１ 円筒部
１２ 下袋部
１３ ヒレ部
１４ 取付孔
１５，１５ａ，１５ｂ，１５ｃ，１５ｄ シール材
１５ｅ 背面用シール材
１５ｆ 帯状シール材
１５ｇ ブロック状シール材
１５ｈ 下面用シール材
２１ マウンド層
２２ａ，２２ｂ ケーソン
２３ａ，２３ｂ 上部工
２４ 締結部材
２５ 押さえ板
２６ 中詰材
２７ スペーサ
３０ 目地部
３１ 第１の間隙
３２ 第２の間隙
３３ 遮水材
４１ マット
４２ 結束材
１００ 円筒状目地材 11 Cylindrical part 12 Lower bag part 13 Fin part 14 Mounting holes 15, 15a, 15b, 15c, 15d Sealing material 15e Back sealing material 15f Band-shaped sealing material 15g Block-shaped sealing material 15h Bottom sealing material 21 Mound layer 22a, 22b Caisson 23a, 23b Superstructure 24 Fastening member 25 Holding plate 26 Filling material 27 Spacer 30 Joint 31 First gap 32 Second gap 33 Water shield material 41 Mat 42 Bundling material 100 Cylindrical joint material

Claims (6)

マウンド層上に立設された対向する構造物の間隙である目地部に挿入される目地材であって、
可撓性を有し中詰材が充填されることで拡幅し前記構造物又は前記マウンド層と接する袋体と、
前記袋体の外面上に配置され、拡幅の際に前記袋体と対面する前記構造物又は前記マウンド層の面の段差部又は凹凸部に接してシールするシール材と、を備え、
前記袋体は、開口部から見た断面が長円形となるように形成されており、
前記シール材は、前記長円形の長辺部における前記袋体の側面上に配置された側面用シール材を含み、
前記シール材の変形は、前記袋体の変形よりも前記段差部又は前記凹凸部に追随しやすい、
ことを特徴とする目地材。 A joint material that is inserted into a joint that is a gap between opposing structures erected on the mound layer.
A bag body that is flexible and widens by being filled with a filling material and is in contact with the structure or the mound layer.
A sealing material which is arranged on the outer surface of the bag body and which is in contact with the stepped portion or the uneven portion of the surface of the structure or the mound layer facing the bag body when widening is provided.
The bag body is formed so that the cross section seen from the opening is oval.
The sealing material includes a side sealing material arranged on the side surface of the bag body at the long side portion of the oval.
The deformation of the sealing material is more likely to follow the stepped portion or the uneven portion than the deformation of the bag body.
A joint material characterized by that. 前記側面用シール材の幅は前記長辺部の幅よりも小さい、
ことを特徴とする請求項１に記載の目地材。 The width of the side sealing material is smaller than the width of the long side.
The joint material according to claim 1 , wherein the joint material is characterized by the above. 前記構造物は、上部工と下部工との積層体であり、
前記側面用シール材は、前記上部工と前記下部工とに跨るように配置される、
ことを特徴とする請求項１又は２に記載の目地材。 The structure is a laminated body of superstructure and substructure, and is
The side sealing material is arranged so as to straddle the superstructure and the substructure.
The joint material according to claim 1 or 2 , wherein the joint material is characterized by the above. 前記シール材は、前記袋体の底部の下面に配置された下面用シール材を含み、
前記底部は、前記袋体内へ前記中詰材が充填される前には前記下面用シール材とともに前記袋体の内側に向かって内挿されている、
ことを特徴とする請求項１に記載の目地材。 The sealing material includes a lower surface sealing material arranged on the lower surface of the bottom of the bag body.
The bottom portion is interpolated toward the inside of the bag body together with the lower surface sealing material before the filling material is filled in the bag body.
The joint material according to claim 1, wherein the joint material is characterized by the above. 前記下面用シール材の幅は、前記下面のシール方向における幅よりも小さい、
ことを特徴とする請求項４に記載の目地材。 The width of the lower surface sealing material is smaller than the width of the lower surface in the sealing direction.
The joint material according to claim 4 , wherein the joint material is characterized by the above. マウンド層上に立設された対向する構造物の間隙である目地部において、
可撓性を有し拡幅可能な袋体を備える目地材の外面に、拡幅の際に前記袋体と対面する前記構造物又は前記マウンド層の面の段差部又は凹凸部に対応する位置に、前記袋体の変形よりも前記段差部又は前記凹凸部に追随しやすく変形するシール材を配置し、
前記目地材を前記目地部に挿入して前記袋体内に中詰材を充填し、
前記袋体は、開口部から見た断面が長円形となるように形成されており、
前記シール材は、前記長円形の長辺部における前記袋体の側面上に配置された側面用シール材を含む、
ことを特徴とする目地材の構築方法。 In the joints, which are the gaps between the opposing structures erected on the mound layer
On the outer surface of the joint material provided with the flexible and widenable bag body, at a position corresponding to the stepped portion or uneven portion of the surface of the structure or the mound layer facing the bag body at the time of widening. A sealing material that deforms more easily to follow the stepped portion or the uneven portion than the deformation of the bag body is arranged.
The joint material is inserted into the joint portion, and the bag is filled with the filling material.
The bag body is formed so that the cross section seen from the opening is oval.
The sealing material includes a side sealing material arranged on the side surface of the bag body at the long side portion of the oval.
A method of constructing a joint material, which is characterized by this.
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