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JP4958744B2 - Reinforced concrete gutter - Google Patents
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JP4958744B2 - Reinforced concrete gutter - Google Patents

Reinforced concrete gutter Download PDF

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Publication number
JP4958744B2
JP4958744B2 JP2007300721A JP2007300721A JP4958744B2 JP 4958744 B2 JP4958744 B2 JP 4958744B2 JP 2007300721 A JP2007300721 A JP 2007300721A JP 2007300721 A JP2007300721 A JP 2007300721A JP 4958744 B2 JP4958744 B2 JP 4958744B2
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Prior art keywords
crack
side groove
reinforced concrete
side wall
wall portions
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JP2007300721A
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JP2009127212A (en
Inventor
健 鎌田
啓 佐藤
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前田製管株式会社
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Priority to JP2007300721A priority Critical patent/JP4958744B2/en
Publication of JP2009127212A publication Critical patent/JP2009127212A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

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Description

本願発明は鉄筋コンクリート製の側溝、詳しくは温度変化,乾燥収縮又は車両等の通過
による上載荷重により発生するひび割れを所定位置に誘発させることができる鉄筋コンク
リート製側溝に関する。
The present invention relates to a side groove made of reinforced concrete, and more particularly to a side groove made of reinforced concrete capable of inducing a crack generated due to an overload caused by temperature change, drying shrinkage or passing of a vehicle or the like at a predetermined position.

コンクリート製の側溝は、コンクリートの乾燥収縮や温度収縮や、側溝の上を車両等が
通過することで頂版部にかかる上載荷重などにより、側溝の壁面にひび割れが発生する場
合がある。このような場合、このひび割れの発生箇所が土中に埋没されることなく外部に
露出している箇所であったり、ひび割れ発生箇所を補修するための補修作業を行うのに空
間的に余裕がある場所にあっては、このひび割れ発生箇所を修理することでそのまま継続
して使用することも可能である。
The side groove made of concrete may crack on the wall surface of the side groove due to drying shrinkage or temperature shrinkage of concrete, or an overload applied to the top plate portion when a vehicle or the like passes over the side groove. In such a case, the cracked portion is a portion that is exposed to the outside without being buried in the soil, or there is a space in the repair work for repairing the cracked portion. In the place, it is possible to continue using the crack by repairing the cracked portion.

しかし、側溝に発生したひび割れ箇所が上記のような補修可能な条件を満たさない場合
には、側溝全体を掘り起こしてこれを修理するか或いはひび割れが発生した側溝を新たな
側溝と取り替えるなどの作業を行うこととなる。したがって、取替えに要する工事費用と
新たな側溝を購入する必要があるなど経費が嵩むとゝもに、見えない部分にひび割れ箇所
が有る場合には見過ごしてしまうといった問題点がある。
However, if the cracked part in the side groove does not satisfy the repairable conditions as described above, the entire side groove is dug up and repaired, or the cracked side groove is replaced with a new side groove. Will be done. Therefore, there is a problem that if the construction cost required for replacement and a new gutter need to be purchased increase the cost, and if there is a cracked part in an invisible part, it will be overlooked.

本発明は、上記のような諸問題点を解決するために成されたもので、その目的とすると
ころは、側溝の所定部分にひび割れ誘発目地部を設けて同部分に確実にひび割れを誘発さ
せ、その他の部分のひび割れ発生を防止した側溝を提供することにある。
The present invention has been made to solve the above-described problems, and the object of the present invention is to provide a crack-inducing joint at a predetermined portion of the side groove to induce the crack reliably in the same portion. Another object of the present invention is to provide a side groove that prevents the occurrence of cracks in other parts.

上記の目的を達成するため、本願の請求項1に記載の発明は、左右側壁部の高さ方向中
央から頂版部及び底版部に向けそれぞれ内方へ延びる内方傾斜面で形成してなる、外形が
壺状,樽状又は釜状の鉄筋コンクリート製側溝であって、前記左右側壁部の高さ方向中央
部に全長にわたってひび割れ誘発目地部を形成したことを特徴とする。
In order to achieve the above object, the invention described in claim 1 of the present application is formed by inwardly inclined surfaces extending inward from the center in the height direction of the left and right side wall portions toward the top plate portion and the bottom plate portion, respectively. The outer shape is a reinforced concrete side groove having a bowl shape, a barrel shape or a pot shape, and a crack-inducing joint portion is formed over the entire length in the center in the height direction of the left and right side wall portions.

そして、上記の目的を達成するため、本願の請求項2に記載の発明は、前記ひび割れ誘
発目地部を形成した左右側壁部に、主筋となる鋼材が配置されていないことを特徴とし、
更に上記の目的を達成するため、本願の請求項3に記載の発明は、前記ひび割れ誘発目地
部を形成した左右側壁部に、前記ひび割れ誘発目地部を中心として、該目地部の方向と直
交する方向に延びる補強材を所定間隔をおいて埋設したことを特徴とする。
And in order to achieve said objective, the invention of Claim 2 of this application is characterized by the steel material used as a main reinforcement not being arrange | positioned at the right-and-left side wall part which formed the said crack induction joint part,
In order to achieve the above object, the invention according to claim 3 of the present application is such that the right and left side wall portions where the crack induction joint portion is formed are orthogonal to the direction of the joint portion with the crack induction joint portion as a center. The reinforcing material extending in the direction is embedded at a predetermined interval.

上記のように、側溝の所定部分にひび割れ誘発目地部を設け、このひび割れ誘発目地部
にひび割れを誘発する構成とすることで、側溝に所定以上の曲げモーメントがかかった場
合には、前記ひび割れ誘発目地部にひび割れを確実に発生させることができる。したがっ
て、外部から見えないその他の箇所にひび割れが発生するのを防止できるとゝもに、ひび
割れ発生箇所に対する事後処理作業を効率良く行うことができる。
As described above, a crack-inducing joint is provided in a predetermined part of the side groove, and the crack-inducing joint is configured to induce a crack. Cracks can be reliably generated at the joints. Therefore, if it is possible to prevent the occurrence of cracks in other places that are not visible from the outside, post-processing work can be efficiently performed on the places where cracks have occurred.

また、前記ひび割れ誘発目地部を形成した左右側壁部に、前記ひび割れ誘発目地部を中
心として、該目地部の形成方向と直交する方向に延びる補強材を所定間隔をおいて埋設す
る構成とすることで、曲げモーメントがひび割れ誘発目地部に集中し、クラックが水平に
走っても、補強材とコンクリートとの間のアンカー効果によって直ちに上下に分離してず
れたりしないし、ブロック吊り上げ時にあっても安全に運搬等を行うことができる。
Further, the left and right side wall portions where the crack-inducing joint portion is formed have a configuration in which a reinforcing material extending in a direction perpendicular to the formation direction of the joint portion is embedded at a predetermined interval around the crack-inducing joint portion. Even if the bending moment concentrates on the crack-inducing joint, and the crack runs horizontally, the anchor effect between the reinforcing material and the concrete does not cause immediate separation and displacement, and it is safe even when the block is lifted Can be transported.

以下、本願発明を図面に示す実施例を参照しながら説明すると、図において、1は本発
明に係る鉄筋コンクリート製の側溝で、中央部空間に形成された通水部2はその横断面形
状がほゞ円形としたものである。3Aは頂版部,3Bは底版部で、3C,3Cは前記頂版
部3Aと底版部3Bを連結する左右の側壁部である。
Hereinafter, the present invention will be described with reference to the embodiments shown in the drawings. In the figure, 1 is a side groove made of reinforced concrete according to the present invention, and a water passing portion 2 formed in a central space has a transverse cross-sectional shape. It has a round shape. 3A is a top plate portion, 3B is a bottom plate portion, and 3C and 3C are left and right side wall portions connecting the top plate portion 3A and the bottom plate portion 3B.

前記左右の側壁部3C,3Cはそれぞれ、高さ方向中央から前記頂版部3Aおよび底版
部3Bに向けそれぞれ内方へ延びる内方傾斜面4Aおよび4Bで形成されていて、外形が
壺状,樽状又は釜状としたものであり、前記頂版部3Aに形成した集水口5は溝蓋6で閉
じられている。7は前記側壁部3C,3Cにそれぞれ形成したひび割れ誘発目地部で、側
壁部3Cの高さ方向中央部に形成した横V字状のカット部で構成され、側溝1の長手方向
の全長にわたって形成されている。
The left and right side wall portions 3C and 3C are respectively formed by inwardly inclined surfaces 4A and 4B extending inward from the center in the height direction toward the top plate portion 3A and the bottom plate portion 3B, and the outer shape is bowl-shaped. The water collecting port 5 formed in the top plate portion 3 </ b> A is closed by a groove lid 6. Reference numeral 7 denotes a crack-inducing joint formed on each of the side wall portions 3C and 3C, which is formed of a horizontal V-shaped cut portion formed at the center in the height direction of the side wall portion 3C, and is formed over the entire length of the side groove 1 in the longitudinal direction. Has been.

8は側溝1の長手方向に延びる主筋となる鋼材、9は該主筋8と直交する副筋となる鋼
材であり、この副筋9は前記頂版部3Aおよび底版部3Bにあって側溝1の幅方向にそれ
ぞれ延びる水平筋9A,9Bと、前記左右の側壁部3C,3Cにあって縦方向にそれぞれ
延びる縦筋10とから構成されており、該縦筋10は前記ひび割れ誘発目地部7の部分で
分割した上部縦筋10A,10Aと下部縦筋10B,10Bとで構成されている。
8 is a steel material that is a main reinforcing bar extending in the longitudinal direction of the side groove 1, and 9 is a steel material that is a secondary reinforcing bar that is orthogonal to the main reinforcing bar 8, and the auxiliary reinforcing bars 9 are located in the top plate portion 3 A and the bottom plate portion 3 B. The horizontal streaks 9A and 9B extend in the width direction and the vertical streaks 10 in the left and right side wall portions 3C and 3C and extend in the vertical direction, respectively. The vertical streaks 10 are formed on the crack-inducing joint 7. It consists of upper vertical bars 10A and 10A and lower vertical bars 10B and 10B which are divided in portions.

11は前記左右の側壁部3C,3Cに埋設した補強材で、前記ひび割れ誘発目地部7を
中心として、該目地部7の方向と直交する上下方向に延びており、所定の間隔をおいて側
溝1の長手方向に平行して埋設されたこの補強材11は前記の各鉄筋8,9,10と連結
することなく、側壁部3C,3Cの中央部の断面厚さの中心に位置している。
Reference numeral 11 denotes a reinforcing material embedded in the left and right side wall portions 3C, 3C, which extends in the vertical direction perpendicular to the direction of the joint portion 7 with the crack-inducing joint portion 7 as a center. The reinforcing material 11 buried in parallel with the longitudinal direction of 1 is located at the center of the cross-sectional thickness of the central portion of the side wall portions 3C, 3C without being connected to the reinforcing bars 8, 9, 10 described above. .

上記のような構成からなる側溝1の頂版部3Aに上載荷重がかかった場合、図3に示す
ように、頂版部3Aの中央部に下向きの大きな曲げモーメントがかかり、底版部3Bの中
央部には上向きの大きな曲げモーメントがかかる。同時に、前記側壁部3C,3Cの中央
部にもそれぞれ図3に示すよう外向きの大きな曲げモーメントがかかる。
When an overload is applied to the top plate portion 3A of the side groove 1 configured as described above, as shown in FIG. 3, a large downward bending moment is applied to the center portion of the top plate portion 3A, and the center of the bottom plate portion 3B is applied. A large upward bending moment is applied to the part. At the same time, a large outward bending moment is applied to the central portions of the side wall portions 3C and 3C as shown in FIG.

そこで、図1及び図2に示す側溝1にあって、その頂版部3Aに上載荷重がかかること
で図3に示すような曲げモーメントがかかった場合、頂版部3Aおよび底版部3Bはそれ
ぞれ上記の曲げモーメントに耐え得るだけの厚さや鉄筋量を備えた構造としているが、側
壁部3C,3Cの部分には、その最大の曲げモーメントがかかった場合にひび割れが発生
するひび割れ誘発目地部7が形成されているので、曲げモーメントがひび割れ誘発目地部
7に集中し、クラックが該目地部7に沿って発生する。
Therefore, in the side groove 1 shown in FIG. 1 and FIG. 2, when a bending moment as shown in FIG. 3 is applied by applying an overload to the top plate portion 3A, the top plate portion 3A and the bottom plate portion 3B are respectively The structure is provided with a thickness and a rebar amount sufficient to withstand the bending moment, but the side wall portions 3C and 3C are crack-induced joint portions 7 where cracks are generated when the maximum bending moment is applied. As a result, the bending moment is concentrated on the crack-inducing joint 7, and a crack is generated along the joint 7.

上記のように、側溝1に所定以上の曲げモーメントがかかった場合には、前記ひび割れ
誘発目地部7にひび割れを確実に発生させることができる。したがって、その他の箇所に
ひび割れが発生するのを防止できるので保守・管理が容易であるとゝもに、クラックがひ
び割れ誘発目地部7に沿って水平に走った場合でも、前記補強材11のアンカー効果によ
って横V字状の部分で上下に分離しずれたりすることがない。
As described above, when a bending moment greater than a predetermined value is applied to the side groove 1, it is possible to reliably generate a crack in the crack-inducing joint portion 7. Therefore, since it is possible to prevent cracks from occurring in other places, the maintenance and management are easy, and even when the cracks run horizontally along the crack-inducing joint 7, Due to the effect, the horizontal V-shaped portion does not separate and shift up and down.

本発明に係る鉄筋コンクリート製側溝の正面説明図である。It is front explanatory drawing of the reinforced concrete side groove | channel which concerns on this invention. 同斜視説明図である。FIG. 同側面説明図である。FIG. 本発明に係る側溝に上載荷重がかかった場合の曲げモーメント図である。It is a bending moment figure when an overload is applied to the side groove according to the present invention.

符号の説明Explanation of symbols

1 側溝
2 通水部
3A 頂版部
3B 底版部
3C 側壁部
4A,4B 内法傾斜面
7 ひび割れ誘発目地部
8 主筋
9A,9B 水平筋
10 縦筋
10A 上部縦筋
10B 下部縦筋
11 補強材
DESCRIPTION OF SYMBOLS 1 Side groove 2 Water flow part 3A Top plate part 3B Bottom plate part 3C Side wall part 4A, 4B Inner method inclined surface 7 Crack induction joint part 8 Main reinforcement 9A, 9B Horizontal reinforcement 10 Vertical muscle 10A Upper longitudinal muscle 10B Lower longitudinal muscle 11 Reinforcement material

Claims (3)

左右側壁部の高さ方向中央から頂版部及び底版部に向けそれぞれ内方へ延びる内方傾斜面で形成してなる、外形が壺状,樽状又は釜状の鉄筋コンクリート製側溝であって、前記左右側壁部の高さ方向中央部に全長にわたってひび割れ誘発目地部を形成したことを特徴とする鉄筋コンクリート製側溝。   It is a side groove made of reinforced concrete having an outer shape that is formed in an inwardly inclined surface extending inward from the center in the height direction of the left and right side wall portions toward the top plate portion and the bottom plate portion, respectively. A reinforced concrete side groove characterized by forming a crack-inducing joint at the center in the height direction of the left and right side walls. 前記ひび割れ誘発目地部を形成した左右側壁部に、主筋となる鋼材が配置されていないことを特徴とする請求項1の鉄筋コンクリート製側溝。   The reinforced concrete side groove according to claim 1, wherein steel materials to be main reinforcing bars are not disposed on the left and right side wall portions where the crack-inducing joint portions are formed. 前記ひび割れ誘発目地部を形成した左右側壁部に、前記ひび割れ誘発目地部を中心として、該目地部の方向と直交する方向に延びる補強材を所定間隔をおいて埋設したことを特徴とする請求項1又は2に記載の鉄筋コンクリート製側溝。   The left and right side wall portions in which the crack-inducing joint portion is formed are embedded with a reinforcing material extending in a direction perpendicular to the direction of the joint portion centered on the crack-inducing joint portion at a predetermined interval. A side groove made of reinforced concrete according to 1 or 2.
JP2007300721A 2007-11-20 2007-11-20 Reinforced concrete gutter Active JP4958744B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007300721A JP4958744B2 (en) 2007-11-20 2007-11-20 Reinforced concrete gutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007300721A JP4958744B2 (en) 2007-11-20 2007-11-20 Reinforced concrete gutter

Publications (2)

Publication Number Publication Date
JP2009127212A JP2009127212A (en) 2009-06-11
JP4958744B2 true JP4958744B2 (en) 2012-06-20

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ID=40818426

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Application Number Title Priority Date Filing Date
JP2007300721A Active JP4958744B2 (en) 2007-11-20 2007-11-20 Reinforced concrete gutter

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Country Link
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09184287A (en) * 1995-12-28 1997-07-15 Ohbayashi Corp Structure for inducting crack
JP2842829B2 (en) * 1996-03-15 1999-01-06 旭コンクリート工業株式会社 Concrete products and their production and use
JP2005139833A (en) * 2003-11-10 2005-06-02 Maruei Concrete Industries Co Ltd Flexible concrete structure and its molding method
JP5270112B2 (en) * 2007-05-24 2013-08-21 日本コンクリート技術株式会社 Wall structure

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