JPH0995963A - Receiving frame of cover for underground structure - Google Patents
Receiving frame of cover for underground structureInfo
- Publication number
- JPH0995963A JPH0995963A JP7282448A JP28244895A JPH0995963A JP H0995963 A JPH0995963 A JP H0995963A JP 7282448 A JP7282448 A JP 7282448A JP 28244895 A JP28244895 A JP 28244895A JP H0995963 A JPH0995963 A JP H0995963A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- receiving frame
- main body
- receiving
- filler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、上，下水道等の地
下構造物に作業員の出入り、あるいは物品を出入れする
ために開閉される地下構造物用蓋の受枠に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving frame for an underground structure lid that is opened and closed to allow workers to enter and exit underground structures such as waterworks and sewers, and to move articles in and out.
【０００２】[0002]
【従来の技術】従来、この種の受枠は、鋳鉄製からな
り、地下構造物に通じる躯体の上部に植設されたアンカ
ーボルトに取付けられるとともに、受枠の上面が路面
（地面）と同一となるように、受枠の周囲にはアスファ
ルト等の充填材が充填されている。2. Description of the Related Art Conventionally, a receiving frame of this type is made of cast iron and is attached to an anchor bolt which is planted on the upper part of a frame leading to an underground structure, and the upper surface of the receiving frame is the same as the road surface (ground). As described above, a filler such as asphalt is filled around the receiving frame.
【０００３】また、受枠は、受枠の下部周囲に設けられ
た下部フランジを介してアンカーボルト及びそのボルト
に螺合されるナットにより固定されるが、この固定の際
に、受枠に局部的に力が作用して、受枠上部の地下構造
物用蓋（以下、蓋という）を受ける受部に変形をもたら
すおそれがある。このため、受枠の受部の部分を肉厚に
形成して変形を受けにくくするために、受枠の上部にフ
ランジが設けられている。Further, the receiving frame is fixed by an anchor bolt and a nut screwed to the bolt through a lower flange provided around the lower portion of the receiving frame. At the time of this fixing, a local force is applied to the receiving frame. May act to cause deformation of the receiving portion that receives the underground structure lid (hereinafter referred to as the lid) on the upper portion of the receiving frame. For this reason, a flange is provided on the upper part of the receiving frame in order to make the receiving portion of the receiving frame thick so as not to be easily deformed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の蓋の受枠は、受枠の上部にフランジを有しているの
で、そのフランジの下方部分が死角となって、充填材が
充填されにくくなるという欠点があった。すなわち、充
填材が充填不足すると、それによって生じた空間に雨水
が侵入し、この侵入した雨水は、冬場に凍結により膨張
し、硬化した充填材自体に亀裂を生じさせる不都合があ
る。また、設置されてから長年の月日が経つと、充填材
が通過する車両の重量などにより空間部に入り込み、そ
の入り込んだ分、受枠のまわりの充填材により構成され
た舗装が沈下するという不都合も生ずる。さらに、充填
材がしっかりと充填されないと、受枠のガタつきが発生
する欠点がある。However, since the conventional receiving frame of the lid has the flange on the upper part of the receiving frame, the lower portion of the flange becomes a blind spot, and it is difficult to fill the filling material. There was a flaw. That is, when the filling material is insufficiently filled, rainwater invades the space created thereby, and the invading rainwater expands due to freezing in the winter, and there is a disadvantage that the hardened filling material itself is cracked. In addition, when many years have passed since the installation, the filling material enters the space due to the weight of the vehicle passing through, etc., and the pavement composed of the filling material around the receiving frame sinks as much as it enters. Also occurs. Further, if the filling material is not completely filled, there is a drawback that rattling of the receiving frame occurs.
【０００５】このような欠点を除去し、受枠のガタつき
を防止するために、受枠の上部から下部にかけてフラン
ジの外径と同じ外径となるように受枠全体を構成するよ
うにしてもよいが、この場合は、受枠の材料費がかさむ
だけでなく、材料が増加した分だけ受枠の重量が増加し
て取扱いが不便になる新たな問題点が発生してしまう。In order to eliminate such defects and prevent rattling of the receiving frame, the entire receiving frame may be constructed so that the outer diameter is the same as the outer diameter of the flange from the upper part to the lower part of the receiving frame. In this case, not only is the material cost of the receiving frame increased, but also the weight of the receiving frame increases due to the increase in the amount of material, which causes a new problem that the handling becomes inconvenient.
【０００６】そこで、本発明は、上記欠点を解決するた
めになされたものであって、その目的は、フランジの下
方に充填材が充填されやすいようにした蓋の受枠を提供
することにある。Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object thereof is to provide a receiving frame for a lid in which a filler is easily filled below the flange.
【０００７】[0007]
【課題を解決するための手段】本発明に係る蓋の受枠
は、上記目的を達成するために、蓋の嵌合される受枠本
体の周囲にフランジを有する蓋の受枠において、前記フ
ランジの底面は、そのフランジの上面を基準にして前記
受枠本体の内側方向に４０°以上，９０°未満の角度に
形成されていることを特徴としている。In order to achieve the above object, a lid receiving frame according to the present invention is a lid receiving frame having a flange around a receiving frame main body to which the lid is fitted. It is characterized in that it is formed at an angle of 40 ° or more and less than 90 ° inward of the receiving frame main body with reference to the upper surface of the flange.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１は、一実施の形態に係る蓋の
受枠の平面図、図２は図１のＡ−Ａ線断面図、図３は図
２のａ部の拡大図である。Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of a receiving frame of a lid according to one embodiment, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is an enlarged view of a portion of FIG.
【０００９】受枠本体１の下部周囲には、周知の受枠本
体と同様に、躯体イに載置される下部フランジ２が設け
られている。Around the lower part of the receiving frame main body 1, a lower flange 2 which is placed on the frame a is provided as in the known receiving frame main body.
【００１０】この下部フランジ２には、所定の間隔を保
って複数個の孔２ａ，２ａ…が開口されていて、躯体イ
に植設された図示しないアンカーボルトが挿入されるよ
うに構成されている。そして、その挿入されたアンカー
ボルトに図示しないナットが螺合されて、受枠本体１が
躯体イに固定されるように構成されている。A plurality of holes 2a, 2a ... Are opened in the lower flange 2 at a predetermined interval so that an anchor bolt (not shown) planted in the frame a can be inserted. There is. Then, a nut (not shown) is screwed into the inserted anchor bolt to fix the receiving frame main body 1 to the frame a.
【００１１】なお、図３において、下部フランジ２が躯
体イ上に直接載置されているが、通常、後述するフラン
ジの上面位置が所定位置となるように、つまり路面ロと
同一となるようにモルタルが充填されて高さ調整されて
いる。In FIG. 3, the lower flange 2 is directly placed on the frame a. However, usually, the upper surface of the flange, which will be described later, is at a predetermined position, that is, the same as the road surface b. The mortar is filled and the height is adjusted.
【００１２】受枠本体１の上部内側には、下部フランジ
２と一体的に設けられた筒部２′を介して、蓋ハの底面
に形成されているテーパ面と合致するテーパ面で形成さ
れる受部３が設けられている。そして、その受部３の外
周は、所定の強度を保てるように肉厚となってフランジ
４が形成されている。Inside the upper part of the receiving frame main body 1, there is formed a tapered surface that matches the tapered surface formed on the bottom surface of the lid c via a cylindrical portion 2'provided integrally with the lower flange 2. A receiving portion 3 is provided. The outer periphery of the receiving portion 3 is thickened to form a flange 4 so as to maintain a predetermined strength.
【００１３】フランジ４の上面４ａは、蓋４の上面４ａ
及び路面ロと一致するように、つまり通行人又は車両の
通過に支障を来さないように同一面に形成されている。
なお、路面ロの上面は、受枠本体１の設置後、受枠本体
１の囲りにアスファルト等の充填材ニを充填して形成さ
れる。The upper surface 4a of the flange 4 is the upper surface 4a of the lid 4.
Also, they are formed on the same surface so as to coincide with the road surface B, that is, so as not to hinder the passage of a passerby or a vehicle.
The upper surface of the road surface (b) is formed by filling the surrounding of the receiving frame main body 1 with a filler 2 such as asphalt after the receiving frame main body 1 is installed.
【００１４】フランジ４の底面（上面４ａと反対の面）
４ｂは、上端部がわずかな立ち下りを有したのち、フラ
ンジ４の上面４ａを基準にして受枠本体１の内側（受枠
本体１の中心側）に向かって４０°以上，９０°未満、
好ましくは４５°以上，５０°以下に形成されている。The bottom surface of the flange 4 (the surface opposite to the upper surface 4a)
4b has a slight trailing edge at the upper end, and is 40 ° or more and less than 90 ° toward the inside of the receiving frame main body 1 (center side of the receiving frame main body 1) with reference to the upper surface 4a of the flange 4.
It is preferably formed at 45 ° or more and 50 ° or less.
【００１５】フランジ４の底面４ｂの角度を上述のよう
に形成すると、受枠本体１の周囲に充填材ニを充填する
ときのローラの転圧がフランジ４の下方にも及び、フラ
ンジ４の下方に充填材ニが充填されないという不都合を
防止することができる。When the angle of the bottom surface 4b of the flange 4 is formed as described above, the rolling pressure of the roller when filling the periphery of the receiving frame main body 1 with the filling material is also below the flange 4 and below the flange 4. It is possible to prevent the inconvenience that the filler D is not filled.
【００１６】特に、底面４ｂの傾斜角度が４５°以上，
５０°以下の範囲のときは、フランジ４の肉厚をそれほ
ど大きくしなくともフランジ４の下方に転圧が及ぶので
好ましい。Particularly, the inclination angle of the bottom surface 4b is 45 ° or more,
In the range of 50 ° or less, rolling pressure is exerted below the flange 4 without increasing the wall thickness of the flange 4, which is preferable.
【００１７】また、底面４ｂの傾斜角度が９０°に近づ
くと、フランジ４の下方における充填材ニに対する転圧
の及ぶ割合は増加するが、フランジ４が筒部２と一体化
する割合が大きくなる。他方、底面４ｂの傾斜角度が４
０°に近づくと、フランジ４の肉厚をそれほど増加させ
ないが、フランジ４の下方における充填材ニに対する転
圧が減少する。Further, when the inclination angle of the bottom surface 4b approaches 90 °, the ratio of the rolling pressure applied to the filler D below the flange 4 increases, but the ratio of the flange 4 integrated with the tubular portion 2 increases. . On the other hand, the inclination angle of the bottom surface 4b is 4
When approaching 0 °, the wall thickness of the flange 4 is not increased so much, but the rolling pressure on the filler D below the flange 4 is reduced.
【００１８】いずれにしても、フランジ４の底面４ｂの
傾斜角度は、４０°未満であると、フランジ４の下方に
おける充填材ニに対する転圧が不足して、フランジ４の
下方に充填材ニが充填されない不都合が生じやすくな
る。また、その傾斜角度が９０°以上であると、充填材
ニに対する転圧の問題は解決するが、受枠本体１のコス
ト及び重量が増加してしまうので、その傾斜角度は上述
の範囲に決められる。In any case, if the inclination angle of the bottom surface 4b of the flange 4 is less than 40 °, the compaction pressure against the filling material D below the flange 4 is insufficient, and the filling material D is below the flange 4. Inconvenience of not being filled is likely to occur. Further, when the inclination angle is 90 ° or more, the problem of rolling pressure on the filler D is solved, but the cost and weight of the receiving frame body 1 increase, so the inclination angle is determined within the above range. .
【００１９】[0019]
【実施例】図３において、θを４５°とし、すなわち、
底面４ｂの傾斜角度を４５°とし、充填材２を図示しな
いローラを用いて４．２ｋｇｆ／ｃｍ2 で転圧した。こ
のとき、フランジ４の外周真下５ｃｍの地点における転
圧は２．０ｋｇｆ／ｃｍ2であり、底面４ｂと筒部２と
の接続点（路面ロから約５ｃｍ下方の地点）における転
圧は、０．６４ｋｇｆ／ｃｍ2 であった。これによりフ
ランジ４の下方にも十分に転圧が及ぶことが確認され
た。EXAMPLE In FIG. 3, θ is set to 45 °, that is,
The bottom surface 4b was inclined at an angle of 45 °, and the filler 2 was rolled at 4.2 kgf / cm 2 by using a roller (not shown). At this time, the rolling pressure at a point 5 cm directly below the outer circumference of the flange 4 is 2.0 kgf / cm 2 , and the rolling pressure at the connection point between the bottom surface 4b and the tubular portion 2 (a point about 5 cm below the road surface B) is 0. It was 0.64 kgf / cm 2 . As a result, it was confirmed that the rolling pressure was sufficiently exerted even under the flange 4.
【００２０】[0020]
【発明の効果】本発明に係る蓋の受枠は、フランジの底
面が、そのフランジの上面を基準にして受枠本体の内側
方向に４０°以上，９０°未満、好ましくは４５°以
上，５０°以下の角度に形成されているので、フランジ
の下方においても充填材に転圧を与えることができ、フ
ランジの下方に隙間が生じる不都合を効果的に防止する
ことができる。In the receiving frame of the lid according to the present invention, the bottom surface of the flange is 40 ° or more and less than 90 °, preferably 45 ° or more and 50 ° or less in the inner direction of the receiving frame main body with reference to the upper surface of the flange. Since it is formed at an angle of, it is possible to apply a compaction pressure to the filling material even under the flange, and it is possible to effectively prevent the inconvenience of forming a gap under the flange.
【図１】本発明の一実施の形態に係る蓋の受枠の平面図
である。FIG. 1 is a plan view of a receiving frame of a lid according to an embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図２のａ部の拡大図である。FIG. 3 is an enlarged view of part a of FIG.
１ 受枠本体 ２ 下部フランジ ２′ 筒部 ３ 受部 ４ フランジ ４ａ 上面 ４ｂ 底面 イ 躯体 ロ 路面（地面） ハ 地下構造物用蓋（蓋） ニ 充填材 1 Receiving frame main body 2 Lower flange 2'Cylinder part 3 Receiving part 4 Flange 4a Upper surface 4b Bottom surface a Body R Road surface (ground) c Underground structure lid (lid) d Filling material
Claims (1)
周囲にフランジを有する地下構造物用蓋の受枠におい
て、 前記フランジの底面は、そのフランジの上面を基準にし
て前記受枠本体の内側方向に４０°以上，９０°未満の
角度に形成されていることを特徴とする地下構造物用蓋
の受枠。1. A receiving frame for an underground structure lid having a flange around a receiving frame body to which the underground structure lid is fitted, wherein a bottom surface of the flange is based on an upper surface of the flange. A receiving frame for a lid for an underground structure, which is formed at an angle of 40 ° or more and less than 90 ° inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7282448A JPH0995963A (en) | 1995-10-04 | 1995-10-04 | Receiving frame of cover for underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7282448A JPH0995963A (en) | 1995-10-04 | 1995-10-04 | Receiving frame of cover for underground structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0995963A true JPH0995963A (en) | 1997-04-08 |
Family
ID=17652563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7282448A Pending JPH0995963A (en) | 1995-10-04 | 1995-10-04 | Receiving frame of cover for underground structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0995963A (en) |
-
1995
- 1995-10-04 JP JP7282448A patent/JPH0995963A/en active Pending
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Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040727 |
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