JP4454096B2 - Calvert side plate connection structure - Google Patents

Calvert side plate connection structure Download PDF

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Publication number
JP4454096B2
JP4454096B2 JP2000063715A JP2000063715A JP4454096B2 JP 4454096 B2 JP4454096 B2 JP 4454096B2 JP 2000063715 A JP2000063715 A JP 2000063715A JP 2000063715 A JP2000063715 A JP 2000063715A JP 4454096 B2 JP4454096 B2 JP 4454096B2
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Japan
Prior art keywords
culvert
side plate
circular
base
section
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Expired - Fee Related
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JP2000063715A
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Japanese (ja)
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JP2001254428A (en
Inventor
隆行 大月
智 松岡
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Landes Co Ltd
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Landes Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、門型断面カルバート(以下門型カルバート)や矩形断面カルバート(ボックスカルバート)の側版の接続構造に関する。
【０００２】
【従来の技術】
従来の門型カルバートを例にとると、図４に示すように、天版10と一体で両側に側版11,11があり、その下部には土台12,12が一体に形成或いは一体に固定結合されて安定に設置するように施工されている。このような構造の場合、自重、土圧、地震力等により土台に回転モーメントＭが生じ土台の底面にかかる内側寄りの反力Ｑ'1と外側寄りの反力Ｑ'２はＱ'1＞Ｑ'２あるいはＱ'1＜Ｑ'２の関係となっている。
【０００３】
【発明が解決しようとする課題】
従来、土台に回転モーメントＭが生じる構造のため、このように土台の内側寄りの反力Ｑ'1と外側寄りの反力Ｑ'２が大小異なるＱ'1＞Ｑ'２あるいはＱ'1＜Ｑ'２の反力が生じることにより、必要地耐力を増加させ、耐震性、耐久性の低下、載土量の減小、基礎地盤の改良、杭工の設置等の解決すべき課題を有していた。本発明はこれらの難点を解決しようとするものである。
【０００４】
【課題を解決するための手段】
上記課題を検討した結果、門型断面カルバート、天版が円形のアーチ断面カルバート、又は矩形断面カルバートにおいて、該カルバートの天版と一体の両側側版にヒンジ継手を設け、地盤反力を均等にしたカルバートであって、前記ヒンジ継手はこれらカルバートの両側側版の中間に設ける。また、矩形断面カルバートでなく、門型断面カルバートや天版が円形のアーチ断面カルバートの場合は、両側側版下方と土台との間にヒンジ継手を設け、これらのヒンジ継手は長手方向直角断面略半円形の円い凸部と円い凹部で構成され、側版を回動可能としたことを特徴とするカルバートの側版接続構造としたのである。特に好ましいのは、門型断面カルバートや天版が円形のアーチ断面カルバートの両側側版と土台との間にヒンジ継手を設け、地盤反力を均等にすることを可能にしたカルバートの側版接続構造である。
【０００５】
前記ヒンジ継手は略半円形の凸又は凹継手が好ましく、カルバートの天版と一体の門型断面カルバートや天版が円形のアーチ断面カルバートの両側側版下方と土台との間に設けたヒンジ継手の場合は、土台に対して間欠的かつ交互に梁と円い凹部を設け、この梁に対して土台の長手方向の貫通孔を設け、かつ側版下部に円い凸部を間欠的に設けて、円い凸部にも土台の長手方向の貫通孔を設け、土台上の円い凹部に側版の円い凸部を載せ、両者の貫通孔へ軸を挿通する。これにより側版の継手部を回動可能にすると同時に耐震性、耐衝撃性、耐地盤傾斜等に対し安定な構造となる。ヒンジ継手の円い凸又は凹継手はいずれが上又は下に設けられてもよいし、円い形状から先端部が当接する多角形や円錐形状であってもよい。また、回動抵抗や摩耗を防止するために略半円形の凸又は凹継手の中間へゴム、プラスチック等のシートを介在させてもよい。
【０００６】
【発明の実施の形態】
図１は本発明のカルバートの側版接続構造を門型カルバートに実施した例の正面図である。天版１と一体に両側へ側版２,２があり、その下方がヒンジ継手３となっており、円い凸部４,４が形成されている。この凸部４,４を受けるために、土台５,５に円い凹部６,６が形成され、両者でヒンジ継手３を構成している。土台５,５の底部は地盤との一体化のための一部埋め戻し等の施工がなされる。このように本発明は側版２,２を土台に固定一体化することなく回動自在としている点が特徴である。
【０００７】
このような構造にしたことによって、土台に回転モーメントが生じない安定な構造となっているため、土台の底面にかかる内側寄りの反力Ｑ1も外側寄りの反力Ｑ２も等しく、Ｑ1＝Ｑ２の関係となる。
【０００８】
土台５と側版２とをヒンジ継手３で連結した場合の耐震性、耐衝撃性、耐地盤傾斜等に対処するために、ヒンジ継手３を軸８で軸支した例を図２に示す。土台５に対して間欠的かつ交互に梁９と円い凹部を設け、この梁９に対して土台の長手方向の貫通孔を設けている。側版２も下部の円い凸部４を間欠的に設けて円い凸部４にも土台の長手方向の貫通孔を設けている。土台５上の円い凹部に側版２の円い凸部４を載せ、両者の貫通孔へ軸８を挿通してヒンジ継手３としている。この構造は土台に回転モーメントが生じない上に耐震性、耐衝撃性、耐地盤傾斜等に対し安定な構造となっている。
【０００９】
図３は他の実施例の斜視図である。この例は天版１と一体の両側の側版２,２の高さ方向の中間部が２分割され、上下のブロックＡ,Ｂがヒンジ継手３によって連結されている。図３中右側の側版は上部ブロックＡの側版に円い凸部４が形成されている。この凸部４を受けるために下部ブロックＢに円い凹部６が形成されて両者でヒンジ継手３を構成している。一方、左側の側版は上部ブロックの側版に円い凹部６が形成されている。この凸部４を受けるために下部ブロックＢに円い凸部４が形成されて両者でヒンジ継手３を構成している。上下のブロックＡ,Ｂ間に上方あるいは側方から荷重がかかっても、回転モーメントが生じない安定な構造となっているし、上下のブロックＡ,Ｂを同一型で製造できる製造上の特徴がある。この実施例において、左右のヒンジ継手３,３は上下方向に変えた位置に設けてもよいし、左右対角線方向に設けてもよい。同一型で製造したものを一方を反転させて両者を合体するだけで、天版１と、両側の側版２,２と、底版７とを有するボックス型カルバートとなる。
【００１０】
【発明の効果】
本発明は以上のような構造としたことによって、土台に回転モーメントが生じない安定な構造となり、耐震性、耐久性の向上等、従来の工法に比べ必要地耐力を減少することができ、基礎地盤の改良等の課題を解決することができ、生産効率もよいカルバートとすることができた。
【図面の簡単な説明】
【図１】本発明のカルバートの側版接続構造を門型カルバートに実施した例の正面図である。
【図２】本発明のカルバートの側版接続構造のヒンジ継手の他の例を示す要部斜視図である。
【図３】他の実施例の本発明のカルバートの側版接続構造をボックスカルバートに実施した例の斜視図である。
【図４】従来の門型カルバートの正面図である。
【符号の説明】
１ 天版
２ 側版
３ ヒンジ継手
４ 円い凸部
５ 土台
６ 円い凹部
７ 底版
８ 軸
９ 梁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting structure for a side plate of a portal section culvert (hereinafter referred to as a portal culvert) or a rectangular section culvert (box culvert).
[0002]
[Prior art]
Taking a conventional portal culvert as an example, as shown in FIG. 4, there are side plates 11, 11 on both sides that are integrated with the top plate 10, and bases 12, 12 are integrally formed or fixed underneath. It is constructed so that it is combined and installed stably. In the case of such a structure, a rotation moment M is generated in the base due to its own weight, earth pressure, seismic force, etc., and the reaction force Q ′ 1 on the inside and the reaction force Q ′ 2 on the outside on the bottom of the foundation are Q ′ 1 > The relationship is Q ′ 2 or Q ′ 1 <Q ′ 2 .
[0003]
[Problems to be solved by the invention]
Conventionally, since a rotational moment M is generated in the base, the reaction force Q ′ 1 closer to the inner side of the base and the reaction force Q ′ 2 closer to the outer side are thus different in magnitude Q ′ 1 > Q ′ 2 or Q ′ 1 < by the reaction force of the Q '2 occurs, increases the required locations strength, shockproof, deterioration of the durability, throat of reduced small, improvement of foundation ground, have a problem to be solved by the installation of piles Engineering Was. The present invention seeks to solve these difficulties.
[0004]
[Means for Solving the Problems]
As a result of studying the above problems, in the portal section culvert, the arch section culvert having a circular top plate, or the rectangular section culvert, hinge joints are provided on both side plates integrated with the top plate of the culvert so that the ground reaction force is evenly distributed. The hinge joint is provided in the middle of both side plates of these culverts . In addition, when the portal cross section culvert or the top plate is a circular arch cross section culvert instead of the rectangular cross section culvert, hinge joints are provided between the lower side plate side and the base, and these hinge joints are substantially perpendicular to the longitudinal cross section. The culvert side plate connecting structure is characterized in that it is composed of semicircular round convex portions and round concave portions, and the side plate is rotatable. It is particularly preferable to connect the side plate of the culvert with the gate-shaped cross-section culvert or the top plate having a hinge joint between the side plate and the base of the circular arch cross-section culvert , which makes the ground reaction force uniform. Structure.
[0005]
The hinge joint is preferably a substantially semicircular convex or concave joint, and is a portal joint culvert integrated with the top plate of the culvert or a hinge joint provided between the lower side of the plate on both sides of the circular arch section culvert and the base. In this case , a beam and a circular recess are provided intermittently and alternately with respect to the base, a through-hole in the longitudinal direction of the base is provided with respect to this beam, and a circular convex portion is provided intermittently at the bottom of the side plate. Then, a through hole in the longitudinal direction of the base is also provided in the circular convex part, the circular convex part of the side plate is placed on the circular concave part on the base, and the shaft is inserted into both through holes. As a result, the joint portion of the side plate can be rotated, and at the same time, the structure is stable against earthquake resistance, impact resistance, ground resistance, and the like. Either the round convex or concave joint of the hinge joint may be provided above or below, or may be a polygonal shape or a conical shape with which the distal end abuts from a circular shape. Further, in order to prevent rotational resistance and wear, a sheet of rubber, plastic, or the like may be interposed in the middle of a substantially semicircular convex or concave joint.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a front view of an example in which the side plate connecting structure of a culvert of the present invention is implemented in a portal culvert. The side plates 2 and 2 are provided on both sides integrally with the top plate 1, and the lower side thereof is a hinge joint 3, and circular convex portions 4 and 4 are formed. In order to receive the convex portions 4, 4, the circular concave portions 6, 6 are formed in the bases 5, 5, and the hinge joint 3 is configured by both. The bottoms of the bases 5 and 5 are partially backfilled for integration with the ground. As described above, the present invention is characterized in that the side plates 2 and 2 are rotatable without being integrally fixed to the base.
[0007]
By adopting such a structure, the foundation has a stable structure in which no rotational moment is generated. Therefore, the inward reaction force Q 1 applied to the bottom surface of the base is equal to the outward reaction force Q 2 , and Q 1 = Q 2 relationship.
[0008]
FIG. 2 shows an example in which the hinge joint 3 is pivotally supported by the shaft 8 in order to cope with earthquake resistance, impact resistance, ground resistance inclination, etc. when the base 5 and the side plate 2 are connected by the hinge joint 3. A beam 9 and a circular recess are provided intermittently and alternately with respect to the base 5, and a through-hole in the longitudinal direction of the base is provided in the beam 9. The side plate 2 also has a lower round convex portion 4 provided intermittently, and the round convex portion 4 is also provided with a through-hole in the longitudinal direction of the base. The circular convex portion 4 of the side plate 2 is placed on the circular concave portion on the base 5, and the shaft 8 is inserted into both through holes to form the hinge joint 3. This structure is stable against earthquake resistance, impact resistance, ground resistance, etc., while no rotational moment is generated on the foundation.
[0009]
FIG. 3 is a perspective view of another embodiment. In this example, the intermediate portions in the height direction of the side plates 2 and 2 on both sides integral with the top plate 1 are divided into two, and the upper and lower blocks A and B are connected by the hinge joint 3. In the right side plate in FIG. 3, round convex portions 4 are formed on the side plate of the upper block A. In order to receive this convex part 4, the circular recessed part 6 is formed in the lower block B, and the hinge joint 3 is comprised by both. On the other hand, the left side plate has a circular recess 6 formed in the side plate of the upper block. In order to receive this convex part 4, the round convex part 4 is formed in the lower block B, and the hinge joint 3 is comprised by both. Even if a load is applied between the upper and lower blocks A and B from above or from the side, it has a stable structure in which no rotational moment is generated, and the upper and lower blocks A and B can be manufactured in the same mold. is there. In this embodiment, the left and right hinge joints 3, 3 may be provided at positions changed in the vertical direction, or may be provided in the left-right diagonal direction. A box-type culvert having a top plate 1, side plates 2, 2 on both sides, and a bottom plate 7 can be obtained simply by inverting one of them and combining them.
[0010]
【The invention's effect】
By adopting the structure as described above, the present invention has a stable structure in which no rotational moment is generated on the foundation, and the required ground strength can be reduced compared to conventional methods such as improvement of earthquake resistance and durability. It was possible to solve problems such as ground improvement, and to achieve a culvert with good production efficiency.
[Brief description of the drawings]
FIG. 1 is a front view of an example in which a side plate connecting structure of a culvert according to the present invention is applied to a portal culvert.
FIG. 2 is a perspective view of a principal part showing another example of the hinge joint of the culvert side plate connection structure of the present invention.
FIG. 3 is a perspective view of an example in which a culvert side plate connecting structure according to another embodiment of the present invention is implemented in a box culvert.
FIG. 4 is a front view of a conventional portal culvert.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Top plate 2 Side plate 3 Hinge joint 4 Round convex part 5 Base 6 Round concave part 7 Bottom plate 8 Axis 9 Beam

Claims (3)

門型断面カルバート、天版が円形のアーチ断面カルバート、又は矩形断面カルバートにおいて、該カルバートの天版と一体の両側側版にヒンジ継手を設け、地盤反力を均等にしたカルバートであって、前記ヒンジ継手は前記カルバートの両側側版の中間に設け、前記ヒンジ継手が長手方向直角断面略半円形の円い凸部と円い凹部で構成され、側版を回動可能としたことを特徴とするカルバートの側版接続構造。Portal-shaped cross-section culvert, arch cross-section culvert with a circular top plate, or rectangular cross-section culvert, provided with hinged joints on both side plates integrated with the top plate of the culvert, the ground reaction force is equalized, the hinge joint is provided in the middle of each side edge plate of the culvert, the hinge joint is constituted by a longitudinal cross section perpendicular to a substantially semicircular shape with rounded protrusions and rounded recess, and characterized in that a pivotable side plate The culvert side plate connection structure. 門型断面カルバート又は天版が円形のアーチ断面カルバートにおいて、該カルバートの天版と一体の両側側版にヒンジ継手を設け、地盤反力を均等にしたカルバートであって、前記ヒンジ継手は前記カルバートの両側側版の下方と土台との間に設け、前記ヒンジ継手が長手方向直角断面略半円形の円い凸部と円い凹部で構成され、側版を回動可能としたことを特徴とするカルバートの側版接続構造。In the arch cross-section culvert having a circular portal section or a top plate, hinge joints are provided on both side plates integrated with the top plate of the culvert so that the ground reaction force is equalized, and the hinge joint is the culvert The hinge joint is provided with a substantially semicircular circular convex portion and a circular concave portion in a cross section perpendicular to the longitudinal direction, and the side plate can be rotated. The culvert side plate connection structure. 両側側版下方と土台との間に設けたヒンジ継手は、土台に対して間欠的かつ交互に梁と円い凹部を設け、この梁に対して土台の長手方向の貫通孔を設け、かつ側版下部に円い凸部を間欠的に設けて、円い凸部にも土台の長手方向の貫通孔を設け、土台上の円い凹部に側版の円い凸部を載せ、両者の貫通孔へ軸を挿通してなる請求項２記載のカルバートの側版接続構造。 The hinge joint provided between the lower side plate side and the base is provided with a beam and a circular recess intermittently and alternately with respect to the base, and a through-hole in the longitudinal direction of the base is provided for this beam. A circular convex part is intermittently provided in the lower part of the plate, a through hole in the longitudinal direction of the base is also provided in the circular convex part, and the circular convex part of the side plate is placed in the circular concave part on the base, and both penetrate The side plate connection structure of a culvert according to claim 2 , wherein the shaft is inserted into the hole.
JP2000063715A 2000-03-08 2000-03-08 Calvert side plate connection structure Expired - Fee Related JP4454096B2 (en)

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ITTO20030519A1 (en) * 2003-07-08 2005-01-09 Carlo Chiaves ARTICULABLE SUPPORT SYSTEM OF AN ELEMENT
JP6258022B2 (en) * 2013-12-02 2018-01-10 鹿島建設株式会社 Temporary deadline structure
JP6817061B2 (en) * 2016-12-28 2021-01-20 ジオスター株式会社 How to build the structure inside the tunnel and the structure inside the tunnel
JP6913457B2 (en) * 2016-12-28 2021-08-04 ジオスター株式会社 Construction method of tunnel structure and tunnel structure
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