JPH07224439A - Side lump of manhole - Google Patents

Side lump of manhole

Info

Publication number
JPH07224439A
JPH07224439A JP6039222A JP3922294A JPH07224439A JP H07224439 A JPH07224439 A JP H07224439A JP 6039222 A JP6039222 A JP 6039222A JP 3922294 A JP3922294 A JP 3922294A JP H07224439 A JPH07224439 A JP H07224439A
Authority
JP
Japan
Prior art keywords
wall
manhole
straight
embedded
bulging
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
Application number
JP6039222A
Other languages
Japanese (ja)
Inventor
Gensaku Seki
源作 関
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OUME CONCRETE KOGYO KK
Original Assignee
OUME CONCRETE KOGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OUME CONCRETE KOGYO KK filed Critical OUME CONCRETE KOGYO KK
Priority to JP6039222A priority Critical patent/JPH07224439A/en
Publication of JPH07224439A publication Critical patent/JPH07224439A/en
Pending legal-status Critical Current

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  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE:To enhance the safety through increase in the mounting strength of a footing tool, perform location safety when a manhole is assembled, and enhance the working effectiveness. CONSTITUTION:Side lumps 12, 32, 42, 50 of a manhole are configured so that cylindrical wall parts 14, 33, 43, 53 whose tops and bottoms are left open have certain wall thickness W11, W51, and a footing tool 18 is embedded inside of these wall parts 14, 33, 43, 53. As swelling out ring-shapedly upper flanges 15, 44, 55 and lower flanges 16, 45, 56 are formed at the peripheries of the tops and bottoms of the wall parts 14, 33, 43, 53. At the outside surfaces of these wall parts 14, 33, 43, 53, swell-out parts 20, 34, 46, 60 are formed while connections are made between the upper and lower flanges. When side lumps 12, 32, 42, 50 are molded, the embedded side end part 18C of the footing tool 18 is extended outward from the wall parts 14, 33, 43, 53 and embedded in the swellout parts 20, 34, 46, 60.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、下水道等に用いられる
マンホールの側塊に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side block of a manhole used for sewers and the like.

【０００２】[0002]

【従来の技術】従来、下水道等に用いられ、人が出入り
するマンホールの側塊は、図１１ないし図１２に示すよ
うに中空円筒状の直壁２を多数組み立てて構成される。
コンクリート製の直壁２は、図１１に示すように、円筒
状壁部４と、壁部４の上下端外周側にそれぞれ膨出して
環状に形成される上鍔部５と下鍔部６とを型枠により一
体に成型して形成される。直壁２の成型時、これら壁部
４、上鍔部５および下鍔部６の内部には補強用の鉄筋７
が規格に応じて所定本数埋め込まれるとともに、壁部４
の内側には、足掛け具８が上下に所定の間隔を隔てて設
けられる。直壁２は、規格に準じて所定の内径Ｒ１、壁
厚さＷ１、高さＨ１がそれぞれ決められる（例えば、Ｊ
ＩＳ規格に応じてＲ１＝９００mm、Ｗ１＝６０mm、Ｈ１
＝６００mm）。上鍔部５と下鍔部６はそれぞれ開口側端
面が平坦に形成され、壁部４の内径Ｒ１に応じて所定の
径方向幅Ｗ２（例えば、Ｗ２＝１５０mm）および所定の
高さＨ２（Ｈ２＝５０mm）を有している。2. Description of the Related Art Conventionally, a side mass of a manhole used for sewerage and the like and in which a person enters and leaves is constructed by assembling a large number of hollow cylindrical straight walls 2 as shown in FIGS.
As shown in FIG. 11, the straight wall 2 made of concrete includes a cylindrical wall portion 4, an upper collar portion 5 and a lower collar portion 6 which are formed in an annular shape by bulging to the outer peripheral sides of the upper and lower ends of the wall portion 4, respectively. Is integrally formed by a mold. During molding of the straight wall 2, reinforcing bars 7 are provided inside the wall portion 4, the upper collar portion 5 and the lower collar portion 6.
Is embedded in a predetermined number according to the standard, and the wall 4
On the inner side of the, footrests 8 are provided vertically with a predetermined interval. The straight wall 2 has a predetermined inner diameter R1, wall thickness W1, and height H1 that are determined according to the standard (for example, J
R1 = 900mm, W1 = 60mm, H1 according to IS standard
= 600 mm). The upper flange portion 5 and the lower collar portion 6 each have a flat end surface on the opening side, and have a predetermined radial width W2 (for example, W2 = 150 mm) and a predetermined height H2 (H2) depending on the inner diameter R1 of the wall portion 4. = 50 mm).

【０００３】足掛け具８は、図１２に示すように、丸棒
状金具をコ字状に折曲して形成される。足掛け具８は、
足掛け部８Ａとこの足掛け部８Ａの両端から延設された
一対の支持部８Ｂとからなる。足掛け部８Ａは、平坦に
形成された上面に滑り止め溝９が刻設されている。足掛
け部８Ａおよび支持部８Ｂは、規格に準じてサイズが決
定される。足掛け具８は、例えば、４０ＳＷタイプで
は、足掛け部８Ａの長さおよび支持部８Ｂの長さがそれ
ぞれ４００mm、２５０mm、直径は、２２mmである。足掛
け具８は、直壁２の成型時、足掛け部８Ａが直壁２の中
心側に向かって水平に所定寸法Ｓ１（例えばＳ１＝１６
０mm）突出し、支持部８Ｂが鉄筋７の間をぬって壁部４
内に納められ埋設されるようになっている。この規格に
応じた足掛け具８のサイズでは、足掛け具８の支持部終
端８Ｃを壁部４（Ｗ１＝６０mm）内に埋設すると、足掛
け部８Ａが所定寸法Ｓ１以上直壁２の中心側に突出し、
取り付け強度を確保することができない。一方、足掛け
部８Ａを直壁２の中心側に向かって所定寸法Ｓ１分だけ
突出させて埋設しようとすると、支持部８Ｂの終端部８
Ｃが壁部４から外方へ突出してしまう。このため、従来
の側塊では、支持部８Ｂの終端部８Ｃを予めカットし、
カットされた終端部８Ｄが壁部４内に納まるように足掛
け具８を埋設している。ところが、マンホールの深度が
深くなるに従い、安全性を考慮して足掛け具８の取り付
けには強度が要求される。しかしながら、支持部８Ａを
カットした足掛け具８では、壁部４内でコンクリートと
の接合面積が限られるので、強度の上から不安がある。
このため、足掛け具８の強度が要求される際には、予め
カットされた終端部８Ｄに補強金具をそれぞれ溶接し、
成型時に足掛け金具８を埋設した際、コンクリートとの
接合面を増大させるようにしている。As shown in FIG. 12, the footrest 8 is formed by bending a round bar-shaped metal fitting into a U-shape. Foot hanger 8
The footrest portion 8A and a pair of support portions 8B extending from both ends of the footrest portion 8A. The footrest 8A has an anti-slip groove 9 engraved on a flat upper surface. The sizes of the footrest portion 8A and the support portion 8B are determined according to the standard. For example, in the 40 SW type of the footrest 8, the length of the footrest 8A and the length of the support 8B are 400 mm and 250 mm, respectively, and the diameter is 22 mm. When the straight wall 2 is molded, the foot hanger 8 has a leg hanger 8A that horizontally extends toward the center of the straight wall 2 by a predetermined dimension S1 (for example, S1 = 16).
0 mm) and the supporting portion 8B penetrates the space between the reinforcing bars 7 and the wall portion 4
It is housed inside and buried. In the size of the foot hanger 8 according to this standard, when the support end 8C of the foot hanger 8 is embedded in the wall portion 4 (W1 = 60 mm), the foot hanger portion 8A projects beyond the predetermined dimension S1 toward the center of the straight wall 2. ,
Installation strength cannot be secured. On the other hand, when the footrest 8A is projected toward the center of the straight wall 2 by a predetermined dimension S1 and is to be embedded, the terminal end 8 of the support 8B.
C projects outward from the wall portion 4. Therefore, in the conventional side block, the end portion 8C of the support portion 8B is cut in advance,
The footrest 8 is embedded so that the cut end portion 8D fits inside the wall portion 4. However, as the depth of the manhole becomes deeper, strength is required for attaching the footrest 8 in consideration of safety. However, in the leg hanger 8 with the support portion 8A cut, the joint area with the concrete in the wall portion 4 is limited, so there is concern about the strength.
For this reason, when the strength of the leg hanger 8 is required, reinforcing metal fittings are respectively welded to the precut end portions 8D,
When the footrest fitting 8 is buried during molding, the joint surface with concrete is increased.

【０００４】マンホールの側塊の組込み時には、成型さ
れた直壁２をマンホール用に掘削された地盤の孔内にク
レーンにより一個づつ吊り降ろして直壁２の周方向の位
置決めを行い、足掛け具８が上下方向に一列に揃うよう
に組み立てて行く。直壁２の位置決めは、直壁２内の足
掛け具８を確認しながら行わなければならないので、直
壁２内に作業員が入り、目視により位置決めを行ってい
る。上記工程を繰り返し、直壁２を一段づつ積み上げて
側塊を組み立てていた。At the time of assembling the side mass of the manhole, the molded straight walls 2 are hung one by one in the holes of the ground excavated for the manhole by a crane to position the straight walls 2 in the circumferential direction, and the foot hanger 8 Assemble so that they line up in the vertical direction. Since the positioning of the straight wall 2 must be performed while checking the leg hanger 8 in the straight wall 2, an operator enters the straight wall 2 and positions it visually. The above process was repeated and the straight walls 2 were stacked one by one to assemble side blocks.

【０００５】[0005]

【発明が解決しようとする課題】上記従来のマンホール
の側塊では、足掛け具８の取り付け強度を向上させるた
め、規格に応じて製造された足掛け具８の支持部８Ｂを
カットして用いる場合、補助金具を溶接しなければなら
ず、手間がかかるという問題がある。しかも溶接される
補助金具は、壁部４のコンクリートが薄肉化して強度が
損なわれることのない形状が要求される。一方、足掛け
具８そのものは、支持部８Ａが所定寸法コンクリート内
に埋設されてさえいれば、規格通りの強度ないし安全基
準を満たすものであるため、取り付け強度を向上させる
目的で規格に応じて製造された足掛け具８を取り付ける
と、壁部全体を厚肉化しなければならずコストアップを
招き、作業効率が低下してしまうという問題がある。In the above-mentioned conventional manhole side block, in order to improve the attachment strength of the foot hanger 8, when the supporting portion 8B of the foot hanger 8 manufactured according to the standard is cut and used, There is a problem that it takes time and effort to weld the auxiliary metal fittings. Moreover, the auxiliary metal member to be welded is required to have a shape that does not impair the strength of the concrete of the wall portion 4 by thinning it. On the other hand, the foot hanger 8 itself satisfies the strength or safety standard according to the standard as long as the support portion 8A is embedded in the concrete of a predetermined size, and therefore is manufactured according to the standard for the purpose of improving the mounting strength. If the attached leg hanger 8 is attached, there is a problem that the wall portion as a whole must be made thicker, resulting in an increase in cost and a reduction in work efficiency.

【０００６】また、従来のマンホールの側塊では、円筒
状直壁２の位置決め時、直壁２の内部に作業員が入り、
直壁２内の足掛け具８の位置を確認しながら位置決めを
行い、一段づつ積み上げて側塊を組み立てるようにして
いたので、安全上好ましくなく、しかも位置決め作業に
時間がかかるという問題がある。In the conventional manhole side block, when the cylindrical straight wall 2 is positioned, a worker enters the straight wall 2 and
Positioning is performed while confirming the position of the leg hanger 8 in the straight wall 2, and the side blocks are assembled by stacking them one by one, which is not preferable for safety, and there is a problem that the positioning operation takes time.

【０００７】本発明は上記欠点を除くためになされたも
ので、足掛け具の取り付け強度を向上させ安全性の高い
マンホールの側塊を提供することを目的とするものであ
る。さらに、マンホール組立時の位置決めを外部から行
うことができ、安全に作業を行うことができるとともに
作業効率を向上させることができるマンホールの側塊を
提供することを目的とするものである。The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide a side block of a manhole with improved mounting strength of a footrest and high safety. Further, it is another object of the present invention to provide a side mass of a manhole, which can be positioned from the outside when assembling the manhole, can perform work safely, and can improve work efficiency.

【０００８】[0008]

【課題を解決するための手段】本発明に係るマンホール
の側塊は、上下が開口して所定の肉厚を有し内側に足掛
け具を埋設した筒状壁部と、この筒状壁部の上下端外周
側にそれぞれ環状に膨出して形成された上下各鍔部とを
備えて成型されたマンホールの側塊であって、上記筒状
壁部の外面に膨出部を形成し、上記足掛け具の埋設側端
部を上記筒状壁部より外方に延出させ上記膨出部内に埋
設して成型するようにしたものである。A side wall of a manhole according to the present invention comprises a tubular wall portion having upper and lower openings, a predetermined wall thickness, and a footrest embedded therein, and a tubular wall portion of the tubular wall portion. A side mass of a manhole molded with upper and lower collars formed by bulging in an annular shape on the outer circumference of the upper and lower ends, respectively, and forming a bulge on the outer surface of the cylindrical wall portion, the footrest The embedding side end portion of the tool is extended outward from the tubular wall portion, embedded in the bulging portion, and molded.

【０００９】[0009]

【作用】本発明に係るマンホールの側塊は、筒状壁部の
足掛け具側外面に膨出部が形成されるので、側塊の成型
時、足掛け具の埋設側端部が筒状壁部より外方に突出し
ても足掛け具の突出端部を膨出部内に埋設して成型する
ことができ、足掛け具を規格を満たす強度を確保して取
り付けることができる。また、膨出部が壁部の外周面に
足掛け具の位置に応じて形成されるので、側塊の組立
時、外部から位置決めを行うことができる。In the side mass of the manhole according to the present invention, since the bulging portion is formed on the outer surface of the tubular wall portion on the side of the foot hanger, when the side mass is molded, the embedded side end of the foot hanger has the cylindrical wall portion. Even if it projects further outward, the projecting end of the foot hanger can be embedded and molded in the bulging portion, and the foot hanger can be attached while ensuring the strength satisfying the standard. Further, since the bulging portion is formed on the outer peripheral surface of the wall portion in accordance with the position of the footrest, it is possible to perform positioning from the outside when assembling the side mass.

【００１０】[0010]

【実施例】以下、図面に基づいて本発明を説明する。図
１は本発明の一実施例に係るマンホールの側塊を構成す
る直壁を示す平面図、図２は図１のII-II 線に沿った縦
断面図、図３は図１に示す直壁の変形例を示す縦断面
図、図４ないし図５はそれぞれ、足掛け具を示す平面図
およびV-V 線断面図、図６ないし図７はそれぞれ、図１
に示す直壁の変形例を示す平面図および正面図、図８は
本発明の他の実施例にかかるマンホールの側塊を構成す
る片斜壁を示す平面図、図９は図８のIX-IX 線に沿った
縦断面図、図１０は本発明に係る側塊の組み立て状態を
示す説明図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 is a plan view showing a straight wall forming a side block of a manhole according to an embodiment of the present invention, FIG. 2 is a vertical sectional view taken along line II-II of FIG. 1, and FIG. 4 is a vertical sectional view showing a modified example of the wall, FIGS. 4 to 5 are plan views showing the footrest, and VV line sectional views are shown in FIGS. 6 to 7, respectively.
FIG. 8 is a plan view and a front view showing a modification of the straight wall shown in FIG. 8, FIG. 8 is a plan view showing a sloping wall forming a side block of a manhole according to another embodiment of the present invention, and FIG. FIG. 10 is a longitudinal sectional view taken along the line IX, and FIG. 10 is an explanatory view showing the assembled state of the side block according to the present invention.

【００１１】マンホールの側塊は、図１に示すような直
壁を多数積み上げ、積み上げられた直壁の最上部に図８
に示すような入口側となる片斜壁を載置して構成される
（図１０参照）。まず最初に、図１に示す直壁１２につ
いて説明する。直壁１２は、型枠（図示せず）にコンク
リートを流し込んで成型される。内部が中空の直壁１２
は、図１ないし図２に示すように、円筒状の壁部１４
と、壁部１４の上下端外周側にそれぞれ環状に膨出して
形成される上鍔部１５と下鍔部１６とを備えている。直
壁１２の成型時、これら壁部１４、上鍔部１５および下
鍔部１６の内部には、図２に示すように、補強用の鉄筋
１７が規格に応じて所定本数埋め込まれるとともに、壁
部１４の内側には、足掛け具１８が上下端からそれぞれ
所定の上下位置に設けられる（上下端から足掛け具１８
までの距離をそれぞれＤ１、Ｄ２とすると、本実施例で
はＤ１＝Ｄ２＝１５０mm）。各足掛け具１８は、上下に
所定の距離Ｄ３（Ｄ３＝Ｄ１＋Ｄ２＝３００mm）を隔て
て設けられる。直壁１２は、規格に準じて所定の内径Ｒ
１１、壁厚さＷ１１、高さＨ１１が決定される（例え
ば、本実施例ではＪＩＳ規格に応じてＲ１１＝９００m
m、Ｗ１１＝６０mm、Ｈ１１＝６００mm）。上鍔部１５
と下鍔部１６は互いに同一の外径を有し、それぞれ上下
側端面１５Ａ、１６Ａが平坦に形成され、壁部１４の内
径Ｒ１１に応じて所定の径方向幅Ｗ１２（Ｗ１２＝１５
０mm）および所定の高さＨ１２（Ｈ１２＝５０mm）を有
している。上鍔部１５と下鍔部１６の外周面１５Ｂ、１
６Ｂは、壁部１４の外周面１４Ａと所定の角度α（α＝
１２０°）で傾斜してそれぞれ接続される。The side block of the manhole is formed by stacking a large number of straight walls as shown in FIG. 1 on the uppermost part of the stacked straight walls.
It is configured by mounting a sloping wall on the inlet side as shown in (see FIG. 10). First, the straight wall 12 shown in FIG. 1 will be described. The straight wall 12 is molded by pouring concrete into a mold (not shown). Straight wall 12 with a hollow interior
Is a cylindrical wall 14 as shown in FIGS.
And an upper flange portion 15 and a lower flange portion 16 which are formed to bulge in an annular shape on the outer peripheral sides of the upper and lower ends of the wall portion 14, respectively. During molding of the straight wall 12, as shown in FIG. 2, reinforcing bars 17 for reinforcement are embedded in the wall portion 14, the upper flange portion 15 and the lower flange portion 16 according to the standard, and On the inside of the portion 14, a foot hanger 18 is provided at predetermined vertical positions from the upper and lower ends (from the upper and lower ends to the foot hanger 18
In the present embodiment, D1 = D2 = 150 mm, where D1 and D2 are the distances to the respective points. Each leg hanger 18 is provided vertically with a predetermined distance D3 (D3 = D1 + D2 = 300 mm). The straight wall 12 has a predetermined inner diameter R according to the standard.
11, wall thickness W11, and height H11 are determined (for example, in this embodiment, R11 = 900 m according to JIS standard).
m, W11 = 60 mm, H11 = 600 mm). Upper collar part 15
And the lower flange portion 16 have the same outer diameter, the upper and lower end surfaces 15A and 16A are formed flat, and a predetermined radial width W12 (W12 = 15) according to the inner diameter R11 of the wall portion 14.
0 mm) and a predetermined height H12 (H12 = 50 mm). Outer peripheral surfaces 15B of the upper and lower collar portions 15 and 16 are 1
6B is a predetermined angle α (α = α) with the outer peripheral surface 14A of the wall portion 14.
They are connected at an angle of 120 °).

【００１２】足掛け具１８は、図４および図５に示すよ
うに、丸棒状金具をコ字状に折曲して形成され、足掛け
部１８Ａとこの足掛け部１８Ａの両端から延設された一
対の支持部１８Ｂとから構成される。足掛け部１８Ａに
は、上面に滑り止め溝が刻設されたカバー１９が覆着さ
れる。各支持部１８Ｂの先端１８Ｃは上方に折り曲げら
れる。足掛け部１８Ａおよび支持部１８Ｂは、規格に応
じてサイズが決定される。足掛け具１８は、本実施例で
は、ＪＩＳ規格の４０ＳＷタイプを示し、金具の直径Ｒ
１２、足掛け部１８Ａの長さＬ１ｌおよび支持部１８Ｂ
の水平長さＬ１２がそれぞれ予め定められている（例え
ば、本実施例ではＪＩＳ規格に応じてＲ１２＝２２mm、
Ｌ１１＝４００mm、Ｌ１２＝２５０mm）。足掛け具１８
は、直壁２の成型時、図２に示すように、足掛け部１８
Ａが直壁１２の中心側に向かって水平に所定寸法Ｓ２
（例えばＳ２＝１６０mm）突出して埋設されるようにな
っている。このＪＩＳ規格に準じた足掛け具１８は、支
持部１８Ｂのうち埋設部Ｅ（６０mm＜Ｅ＜（Ｌ１２−Ｓ
２）mm）がコンクリート壁内に埋設された場合、所定の
取り付け強度および安全基準を満たすものである。As shown in FIGS. 4 and 5, the footrest 18 is formed by bending a round bar-shaped metal fitting into a U-shape, and has a footrest 18A and a pair of legs extending from both ends of the footrest 18A. It is composed of a support portion 18B. A cover 19 having an anti-slip groove formed on its upper surface is attached to the footrest portion 18A. The tip 18C of each support 18B is bent upward. The sizes of the footrest portion 18A and the support portion 18B are determined according to the standard. In this embodiment, the leg hanger 18 is a JIS standard 40SW type, and has a metal fitting diameter R.
12, the length L1l of the footrest 18A and the support 18B
Has a predetermined horizontal length L12 (for example, in this embodiment, R12 = 22 mm according to JIS standard,
L11 = 400 mm, L12 = 250 mm). Foot rest 18
When molding the straight wall 2, as shown in FIG.
A is a predetermined dimension S2 horizontally toward the center of the straight wall 12.
(For example, S2 = 160 mm) is projected and embedded. The footrest 18 conforming to this JIS standard has a buried portion E (60 mm <E <(L12-S
When 2) mm) is embedded in a concrete wall, it meets the specified mounting strength and safety standards.

【００１３】ところで、壁部１４の外周面１４Ａには、
図１および図２に示すように、膨出部２０が形成され
る。足掛け具１８は膨出部２０の部位に対応した壁部１
４の内側に設けられるようになっている。膨出部２０
は、上鍔部１５と下鍔部１６とを接続し、周方向に沿っ
て所定寸法（膨出部２０の外周面２０Ａのなす円弧）Ｃ
１を有している。膨出部２０の外周面２０Ａは上鍔部１
５と下鍔部１６の外周面１５Ｂ、１６Ｂと一致して形成
されるとともに、壁部１４の外周面１４Ａと傾斜面２０
Ｂにより接続される。膨出部２０は、外周面２０Ａの円
弧Ｃ１両端を結ぶ線分の長さをＷ１３とすると、線分の
長さＷ１３が、支持部１８Ｂの両端部１８Ｃ、１８Ｃ間
の距離（足掛け部１８Ａの長さ）Ｌ１１より長寸となる
ように、周方向の所定寸法Ｃ１が決定される。膨出部２
０は、直壁１２の成型時、壁部１４および上・下鍔部１
５、１６とともに図示しない型枠により一体に成型さ
れ、足掛け具１８が壁部１４内側の所定位置に取り付け
られる際、内部に支持部１８Ｂの両端部１８Ｃ、１８Ｃ
を納めるようになっている。このため、足掛け具１８
は、支持部１８Ｂの埋設部Ｅが壁部１４と膨出部２０と
で画成されるコンクリート内に埋め込まれて直壁１２に
取り付けられる。By the way, on the outer peripheral surface 14A of the wall portion 14,
As shown in FIGS. 1 and 2, the bulging portion 20 is formed. The leg hanger 18 is the wall portion 1 corresponding to the region of the bulging portion 20.
4 is provided inside. Bulge 20
Is a predetermined dimension (an arc formed by the outer peripheral surface 20A of the bulging portion 20) C that connects the upper collar portion 15 and the lower collar portion 16 and is arranged in the circumferential direction.
Have one. The outer peripheral surface 20A of the bulging portion 20 is the upper collar portion 1
5 and the outer peripheral surfaces 15B, 16B of the lower collar portion 16 and the outer peripheral surface 14A of the wall portion 14 and the inclined surface 20.
Connected by B. In the bulging portion 20, if the length of a line segment connecting both ends of the arc C1 of the outer peripheral surface 20A is W13, the length W13 of the line segment is the distance between the both end portions 18C, 18C of the support portion 18B (of the footrest portion 18A). The predetermined dimension C1 in the circumferential direction is determined to be longer than the length L11. Bulge 2
0 is the wall portion 14 and the upper and lower collar portions 1 when the straight wall 12 is molded.
5, 16 are integrally molded with a mold frame (not shown), and when the footrest 18 is attached to a predetermined position inside the wall portion 14, both end portions 18C, 18C of the support portion 18B are internally provided.
Is to be paid. Therefore, the footrest 18
The embedded portion E of the support portion 18B is embedded in the concrete defined by the wall portion 14 and the bulging portion 20 and attached to the straight wall 12.

【００１４】次に、上記実施例にかかるマンホールの側
塊の作用について説明する。直壁１２は、型枠にコンク
リートを流し込んで成型する際、壁部１４、上・下鍔部
１５、１６、鉄筋１７および膨出部２０が一体に成型さ
れるとともに、足掛け具１８が壁部１４内側の所定位置
に取り付けられる。足掛け具１８は、足掛け部１８Ａが
直壁１２の中心側に向かって水平に所定寸法Ｓ２突出
し、支持部１８Ｂが鉄筋１７の間をぬって壁部１４を貫
通し、支持部１８Ｂの両端部１８Ｃ、１８Ｃが膨出部２
０内に納められ、支持部１８Ｂの埋設部Ｅは壁部１４か
ら膨出部２０にかけてコンクリート内に埋め込まれる。
このため、足掛け具１８は、規格を満たす強度を確保す
ることができる。Next, the operation of the side mass of the manhole according to the above embodiment will be described. When the straight wall 12 is cast by pouring concrete into the formwork, the wall portion 14, the upper and lower brim portions 15, 16, the reinforcing bar 17 and the bulging portion 20 are integrally molded, and the leg hanger 18 is the wall portion. It is attached at a predetermined position inside 14. In the footrest 18, the footrest 18A horizontally projects toward the center of the straight wall 12 by a predetermined dimension S2, the support 18B penetrates the space between the rebars 17 and penetrates the wall 14, and both ends 18C of the support 18B. , 18C is the bulge 2
0, and the embedded portion E of the support portion 18B is embedded in concrete from the wall portion 14 to the bulging portion 20.
Therefore, the leg hanger 18 can ensure the strength satisfying the standard.

【００１５】また、上記実施例にかかるマンホールの側
塊の組込み時には、成型された直壁１２をマンホール用
に掘削された地盤の孔内にクレーンにより１個ずつ吊り
降ろして行く。このとき、下側の直壁１２に上側の直壁
１２を吊り下ろして、直壁１２の外側から目視により下
側の直壁１２の膨出部２０に上側の直壁１２の膨出部２
０を合致させて周方向の位置決めを行うと、足掛け具８
は上下方向に揃えられる。このため、直壁２内に作業員
が入らなくても外部から目視により位置決めを行うこと
ができる。上記工程を繰り返し、直壁２を一段づつ積み
上げて側塊を組み立て、地盤と側塊との間の空隙に埋戻
しを行い、マンホールの組立が完了する。In addition, when the side mass of the manhole according to the above-mentioned embodiment is assembled, the molded straight walls 12 are hung one by one into the holes of the ground excavated for the manhole by a crane. At this time, the upper straight wall 12 is hung on the lower straight wall 12, and the bulging portion 2 of the upper straight wall 12 is visually observable from the outside of the straight wall 12 to the bulging portion 2 of the lower straight wall 12.
When 0 is matched and positioning is performed in the circumferential direction, the footrest 8
Are aligned vertically. For this reason, the positioning can be visually performed from the outside even if the worker does not enter the straight wall 2. By repeating the above steps, the straight walls 2 are stacked one by one to assemble a side block, and backfilling is performed in the gap between the ground and the side block to complete the manhole assembly.

【００１６】図３は、上記実施例にかかるマンホールの
側塊を構成する直壁１２の変形例を示すもので、上記実
施例と同一の符号は、同一または相当部分を示す。直壁
３２は、図３に示すように、直壁１２と高さＨ３１（Ｈ
３１＝３００mm）が異なる点、足掛け具１８が直壁３２
の上下端から所定の位置（上下端からの距離Ｄ１＝Ｄ２
＝１５０mm）に１ヶ所設けられる点を除き、ほぼ同一の
構成である。すなわち、直壁３２は、円筒状壁部３３の
外周面３３Ａに膨出部３４が形成される。この膨出部３
２の部位に対応して足掛け具１８が壁部３３の内側に設
けられる。膨出部３４は、上鍔部１５と下鍔部１６とを
接続し、周方向に沿って所定の寸法（図示せず）を有し
ている。膨出部３４の外周面３４Ａは上下の各鍔部外周
面１５Ｂ、１６Ｂと一致して形成され、壁部３３の外周
面３３Ａと傾斜面３４Ｂにより接続される。膨出部３４
は、外周面３４Ａの円弧両端を結ぶ線分の長さをＷ１３
とすると、線分の長さＷ１３が、支持部１８Ｂの両端部
１８Ｃ、１８Ｃ間の距離（足掛け部１８Ａの長さ）Ｌ１
１より長寸となるように、周方向の所定寸法が決定され
る。膨出部３４は、上記実施例と同様に、直壁３２の成
型時、内部に支持部１８Ｂの両端部１８Ｃ、１８Ｃを納
めるようになっている。このため、足掛け具１８は、支
持部１８Ｂの埋設部Ｅがコンクリート内に埋め込まれて
直壁３２に取り付けられる。従って、足掛け具１８は、
規格を満たす強度を確保して直壁３２に取り付けられる
とともに、側塊組立時には、外部から膨出部３４により
位置決めすることができる。FIG. 3 shows a modification of the straight wall 12 constituting the side block of the manhole according to the above embodiment, and the same reference numerals as those in the above embodiment indicate the same or corresponding portions. As shown in FIG. 3, the straight wall 32 has a height H31 (H
31 = 300 mm), the leg hanger 18 is a straight wall 32
A predetermined position from the upper and lower ends (distance D1 = D2 from the upper and lower ends)
(= 150 mm), it has almost the same configuration except that it is provided in one place. That is, in the straight wall 32, the bulging portion 34 is formed on the outer peripheral surface 33A of the cylindrical wall portion 33. This bulge 3
The foot hanger 18 is provided inside the wall portion 33 corresponding to the portion of No. 2. The bulging portion 34 connects the upper flange portion 15 and the lower flange portion 16 and has a predetermined dimension (not shown) along the circumferential direction. The outer peripheral surface 34A of the bulging portion 34 is formed so as to coincide with the upper and lower outer peripheral surfaces 15B and 16B of the flange portions, and is connected to the outer peripheral surface 33A of the wall portion 33 by the inclined surface 34B. Bulge 34
Is the length of the line segment connecting the arcuate ends of the outer peripheral surface 34A to W13.
Then, the length W13 of the line segment is the distance L1 between the both end portions 18C and 18C of the support portion 18B (the length of the footrest portion 18A) L1.
The predetermined dimension in the circumferential direction is determined so as to be longer than 1. Similar to the above-described embodiment, the bulging portion 34 is adapted to house both end portions 18C and 18C of the support portion 18B when the straight wall 32 is molded. Therefore, the footrest 18 is attached to the straight wall 32 with the embedded portion E of the support portion 18B embedded in concrete. Therefore, the footrest 18 is
It can be attached to the straight wall 32 while ensuring the strength satisfying the standard, and can be positioned from the outside by the bulging portion 34 during side block assembly.

【００１７】なお、図６および図７は、上記実施例にか
かるマンホールの側塊を構成する直壁１２の変形例を示
すもので、直壁４２は、図６に示すように、筒状壁部４
３が楕円状に形成されている。上鍔部４４と下鍔部４５
は筒状壁部４３の上下に互いに同一の外周を有し、全周
にわたり外方に膨出している。膨出部４６は上鍔部４４
と下鍔部４５と接続しかつ上鍔部４４と下鍔部４５の外
周面４４Ａ、４５Ａに一致して形成され、この膨出部４
６内に足掛け具１８の支持部１８Ｂが埋設されるように
なっている。従って、足掛け具１８を規格を満たす強度
を確保して直壁４２に取り付けることができる。6 and 7 show a modified example of the straight wall 12 which constitutes the side mass of the manhole according to the above embodiment, and the straight wall 42 is a cylindrical wall as shown in FIG. Part 4
3 is formed in an elliptical shape. Upper collar portion 44 and lower collar portion 45
Have the same outer circumference above and below the cylindrical wall portion 43, and bulge outward over the entire circumference. The bulging portion 46 is the upper collar portion 44.
Is formed so as to be connected to the lower collar portion 45 and to match the outer peripheral surfaces 44A and 45A of the upper collar portion 44 and the lower collar portion 45.
The support portion 18B of the footrest 18 is embedded in the interior of the footrest 6. Therefore, the leg hanger 18 can be attached to the straight wall 42 while ensuring the strength satisfying the standard.

【００１８】次に、本発明の他の実施例にかかるマンホ
ールの側塊について、図８および図９に基づいて説明す
る。なお、上記実施例および変形例と同一の符号は、同
一または相当部分を示す。このマンホールの側塊を構成
する片斜壁５０は、筒状の壁部５１が垂直に立ち上がっ
た直壁状壁部５２と、この直壁状部５２と連続し下方に
ゆくに従い拡径する斜壁状部５３とからなっている。片
斜壁５０は、壁部５１の上下端外周側にそれぞれ上鍔部
５５と下鍔部５６とが環状に膨出して形成される。片斜
壁５０の壁部５１、上鍔部５５および下鍔部５６の内部
には補強用の鉄筋５７が規格に応じて所定本数埋め込ま
れる。壁部５１の直壁状壁部５２側の内側には、足掛け
具１８が上下端からそれぞれ所定の位置に設けられ（上
下端から足掛け具１８までの距離はそれぞれＤ１、Ｄ
２）、各足掛け具１８は、所定の距離Ｄ３（Ｄ３＝Ｄ１
＋Ｄ２）を隔てて設けられる。片斜壁５０は、規格に応
じて上部開口側内径Ｒ５１、下部開口側内径Ｒ５２、壁
厚さＷ５１、高さＨ５１が決定される（例えば、本実施
例ではＪＩＳ規格に応じてＲ５１＝６００mm、Ｒ５２＝
９００mm、Ｗ５１＝６０mm、Ｈ５１＝６００mm）。上鍔
部５５と下鍔部５６は、それぞれ外径Ｒ５５、Ｒ５６を
異ならせて形成される（本実施例では、Ｒ５５＝１１０
０mm、Ｒ５６＝１２００mm）。上鍔部５５と下鍔部５６
は、それぞれ上下側端面５５Ａ、５６Ａが平坦に形成さ
れ、所定の径方向幅Ｗ５２、Ｗ５３（Ｗ５２＝２５０m
m、Ｗ５３＝１５０mm）および上下方向に所定の高さＨ
５２、Ｈ５３（Ｈ５２＝６０mm、Ｈ５３＝５０mm）を有
している。このため、上鍔部５５の直壁状壁部５２側は
下方の下鍔部５６より外方に突出している。上鍔部５５
と下鍔部５６の外周面５５Ｂ、５６Ｂはそれぞれ、壁部
５１の外周面５１Ａと傾斜して接続される。Next, a side block of a manhole according to another embodiment of the present invention will be described with reference to FIGS. 8 and 9. The same reference numerals as those used in the above-described embodiments and modifications indicate the same or corresponding parts. The sloping wall 50 forming the side block of the manhole includes a straight wall-shaped wall portion 52 in which a cylindrical wall portion 51 rises vertically, and a slanted wall that is continuous with the straight wall-shaped portion 52 and expands downward. It is composed of a wall-shaped portion 53. The sloping wall 50 is formed by bulging annularly an upper collar portion 55 and a lower collar portion 56 on the outer peripheral side of the upper and lower ends of the wall portion 51. A predetermined number of reinforcing bars 57 are embedded in the wall portion 51, the upper flange portion 55, and the lower flange portion 56 of the one-sided inclined wall 50 according to the standard. Inside the wall portion 51 on the side of the straight wall-shaped wall portion 52, the foot hanger 18 is provided at a predetermined position from the upper and lower ends (the distances from the upper and lower ends to the foot hanger 18 are D1 and D, respectively).
2) Each leg hanger 18 has a predetermined distance D3 (D3 = D1).
+ D2) are provided separately. For the sloping wall 50, an upper opening side inner diameter R51, a lower opening side inner diameter R52, a wall thickness W51, and a height H51 are determined according to the standard (for example, in the present embodiment, R51 = 600 mm according to the JIS standard, R52 =
900mm, W51 = 60mm, H51 = 600mm). The upper collar portion 55 and the lower collar portion 56 are formed with different outer diameters R55 and R56, respectively (in this embodiment, R55 = 110).
0 mm, R56 = 1200 mm). Upper collar portion 55 and lower collar portion 56
Have upper and lower end surfaces 55A and 56A formed flat and have predetermined radial widths W52 and W53 (W52 = 250 m).
m, W53 = 150 mm) and a predetermined height H in the vertical direction
52 and H53 (H52 = 60 mm, H53 = 50 mm). Therefore, the straight wall-shaped wall portion 52 side of the upper collar portion 55 projects outward from the lower lower collar portion 56. Upper collar part 55
And outer peripheral surfaces 55B and 56B of the lower collar portion 56 are connected to the outer peripheral surface 51A of the wall portion 51 at an angle.

【００１９】ところで、壁部５１の外周面５１Ａには、
図８および図９に示すように、膨出部６０が形成され
る。足掛け具１８は膨出部６０の部位に対応して壁部５
１の内側に設けられるようになっている。膨出部６０
は、直壁状壁部５２側の下鍔部５６から立ち上がり、下
鍔部５６の外周面５６Ｂに一致して形成されるととも
に、上鍔部５６と下鍔部５６とを接続し、周方向に沿っ
て所定寸法Ｃ２（Ｃ２は膨出部６０の外周面６０Ａのな
す円弧）を有している。膨出部６０は、壁部５１の外周
面５１Ａと傾斜面６０Ｂにより接続される。膨出部６０
は、図８に示すように、外周面６０Ａの円弧Ｃ２両端を
結ぶ線分の長さをＷ１３とすると、線分の長さＷ１３
が、支持部１８Ｂの両端部１８Ｃ、１８Ｃ間の距離（足
掛け部１８Ａの長さ）Ｌ１１より長寸となるように、周
方向の所定寸法Ｃ２が決定される。膨出部６０は、片斜
壁５０の成型時、壁部５１および上・下鍔部５５、５６
とともに図示しない型枠により一体に成型され、足掛け
具１８が壁部５１の所定位置に取り付けられる際、内部
に支持部１８Ｂの両端部１８Ｃ、１８Ｃを納めるように
なっている。このため、足掛け具１８は、支持部１８Ｂ
の埋設部Ｅが壁部５１と膨出部６０とで画成されるコン
クリート内に埋め込まれて片斜壁５０に取り付けられ
る。足掛け具１８は、片斜壁５０の成型時、足掛け部１
８Ａが片斜壁５０の中心側に向かって水平に所定寸法Ｓ
２（例えばＳ２＝１６０mm）突出して埋設されるように
なっており、支持部１８Ｂのうち埋設部Ｅ（６０mm＜Ｅ
＜（Ｌ１２−Ｓ２）mm）がコンクリート壁内に埋設され
た場合、所定の取り付け強度および安全基準を満たすも
のである。By the way, on the outer peripheral surface 51A of the wall portion 51,
As shown in FIGS. 8 and 9, the bulging portion 60 is formed. The leg hanger 18 corresponds to the portion of the bulging portion 60 and is attached to the wall portion 5
It is designed to be provided inside 1. Bulge 60
Is formed so as to rise from the lower flange portion 56 side of the straight wall-shaped wall portion 52 and to coincide with the outer peripheral surface 56B of the lower flange portion 56, connect the upper flange portion 56 and the lower flange portion 56, and Has a predetermined dimension C2 (C2 is an arc formed by the outer peripheral surface 60A of the bulging portion 60). The bulging portion 60 is connected to the outer peripheral surface 51A of the wall portion 51 by the inclined surface 60B. Bulge 60
As shown in FIG. 8, assuming that the length of a line segment connecting both ends of the arc C2 of the outer peripheral surface 60A is W13, the length W13 of the line segment is
However, the predetermined circumferential dimension C2 is determined so as to be longer than the distance (length of the footrest portion 18A) L11 between the both end portions 18C and 18C of the support portion 18B. The bulging portion 60 is provided with the wall portion 51 and the upper and lower flange portions 55 and 56 when the unilateral wall 50 is molded.
At the same time, it is integrally molded by a mold (not shown) so that both ends 18C, 18C of the support 18B can be housed inside when the footrest 18 is attached to a predetermined position of the wall 51. Therefore, the leg hanger 18 has a support portion 18B.
The embedded portion E is embedded in the concrete defined by the wall portion 51 and the bulging portion 60 and attached to the sloping wall 50. The footrest 18 is used when the sloping wall 50 is molded.
8A has a predetermined dimension S horizontally toward the center of the sloping wall 50.
2 (for example, S2 = 160 mm) is projected and embedded, and the embedded portion E (60 mm <E
When <(L12-S2) mm) is embedded in the concrete wall, it meets the predetermined mounting strength and safety standards.

【００２０】次に、上記実施例にかかるマンホールの側
塊の作用について説明する。片斜壁５０は、型枠にコン
クリートを流し込んで成型する際、壁部５１、上・下鍔
部５５、５６、鉄筋５７および膨出部６０が一体に成型
されるとともに、足掛け具１８が壁部５１内側の所定位
置に取り付けられる。足掛け具１８は、足掛け部１８Ａ
が片斜壁５０の中心側に向かって水平に所定寸法Ｓ２突
出するとともに、支持部１８Ｂが鉄筋５７の間をぬって
壁部５１を貫通し、支持部１８Ｂの両端部１８Ｃ、１８
Ｃが膨出部６０内に納められ、支持部１８Ｂの埋設部Ｅ
は壁部５１から膨出部６０にかけてコンクリート内に埋
め込まれる。このため、足掛け具１８は、規格を満たす
強度を確保することができる。Next, the operation of the side mass of the manhole according to the above embodiment will be described. When the concrete is poured into the formwork to form the sloping wall 50, the wall portion 51, the upper and lower flange portions 55 and 56, the reinforcing bar 57, and the bulging portion 60 are integrally formed, and the leg hanger 18 is attached to the wall. It is attached at a predetermined position inside the portion 51. The foot rest 18 is a foot rest 18A.
While protruding horizontally toward the center side of the sloping wall 50 by a predetermined dimension S2, the supporting portion 18B penetrates the wall portion 51 through the space between the reinforcing bars 57, and both end portions 18C, 18 of the supporting portion 18B.
C is housed in the bulging portion 60, and the embedded portion E of the support portion 18B
Is embedded in the concrete from the wall portion 51 to the bulging portion 60. Therefore, the leg hanger 18 can ensure the strength satisfying the standard.

【００２１】なお、上記各実施例および変形例に係るマ
ンホールの側塊では、膨出部を上鍔部と下鍔部とを接続
して形成しているがこれに限られるものではなく、膨出
部を足掛け具１８の支持部１８Ｂが突出する部位近傍に
限定しかつ所定の強度を確保できる範囲で分割して形成
し、重量の軽減を図るようにしてもよいのはもちろんで
ある。In the side mass of the manhole according to each of the above embodiments and modifications, the bulging portion is formed by connecting the upper flange portion and the lower collar portion, but the invention is not limited to this. It is needless to say that the projecting portion is limited to the vicinity of the portion where the supporting portion 18B of the footrest 18 projects and is divided and formed within a range in which a predetermined strength can be secured to reduce the weight.

【００２２】[0022]

【発明の効果】以上述べたように本発明によれば、筒状
壁部の外面に膨出部を形成し、足掛け具の埋設側端部を
筒状壁部より外方に延出させて膨出部内に埋設して成型
したことにより、足掛け具の取り付け強度を向上させる
ことができるので、保守作業の安全性を高めることがで
きる。さらに、本発明によれば、マンホール組立時の位
置決めを外部から容易に行うことができるので、組み立
て作業を安全に行うことができるとともに、作業効率を
向上させることができる。As described above, according to the present invention, the bulging portion is formed on the outer surface of the tubular wall portion, and the embedded side end portion of the foot hanger is extended outward from the tubular wall portion. By embedding and molding in the bulging portion, the attachment strength of the foot hanger can be improved, and therefore the safety of maintenance work can be improved. Further, according to the present invention, since the positioning at the time of assembling the manhole can be easily performed from the outside, the assembling work can be performed safely, and the work efficiency can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例に係るマンホールの側塊を構
成する直壁を示す平面図である。FIG. 1 is a plan view showing a straight wall forming a side block of a manhole according to an embodiment of the present invention.

【図２】図１の直壁のII-II 線に沿った縦断面図であ
る。FIG. 2 is a vertical sectional view taken along line II-II of the straight wall in FIG.

【図３】図１の直壁の変形例を示す縦断面図である。FIG. 3 is a vertical cross-sectional view showing a modification of the straight wall of FIG.

【図４】足掛け具を示す平面図である。FIG. 4 is a plan view showing a footrest.

【図５】図４の足掛け具のV-V 線断面図である。5 is a sectional view taken along line VV of the footrest of FIG.

【図６】直壁の変形例を示す平面図である。FIG. 6 is a plan view showing a modified example of a straight wall.

【図７】図６の直壁の正面図である。FIG. 7 is a front view of the straight wall of FIG.

【図８】本発明の他の実施例にかかるマンホールの側塊
を構成する片斜壁を示す平面図である。FIG. 8 is a plan view showing a sloping wall forming a side block of a manhole according to another embodiment of the present invention.

【図９】図８の片斜壁のIX-IX 線に沿った縦断面図であ
る。9 is a vertical sectional view taken along line IX-IX of the sloping wall in FIG.

【図１０】本発明にかかるマンホールの側塊の組み立て
状態を示す説明図である。FIG. 10 is an explanatory diagram showing an assembled state of a side block of a manhole according to the present invention.

【図１１】従来の直壁を示す縦断面図である。FIG. 11 is a vertical cross-sectional view showing a conventional straight wall.

【図１２】従来の直壁を示す平面図である。FIG. 12 is a plan view showing a conventional straight wall.

【符号の説明】[Explanation of symbols]

１２、３２、４２ 直壁（側塊） １４、３３、４３、５３ 筒状壁部 １５、４４、５５ 上鍔部 １６、４５、５６ 下鍔部 １８ 足掛け具 １８Ｃ 足掛け具の埋設側端部 ２０、３４、４６、６０ 膨出部 ５０ 片斜壁（側塊） Ｗ１１、Ｗ５１ 壁部の肉厚 12, 32, 42 Straight wall (side mass) 14, 33, 43, 53 Cylindrical wall portion 15, 44, 55 Upper collar portion 16, 45, 56 Lower collar portion 18 Foot fitting 18C Embedded side end portion of foot fitting 20 , 34, 46, 60 Bulging part 50 Uni-sloping wall (side mass) W11, W51 Wall thickness

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】 上下が開口して所定の肉厚を有し内側に
足掛け具を埋設した筒状壁部と、この筒状壁部の上下端
外周側にそれぞれ環状に膨出して形成された上下各鍔部
とを備えて成型されたマンホールの側塊において、上記
筒状壁部の外面に膨出部を形成し、上記足掛け具の埋設
側端部を上記筒状壁部より外方に延出させ上記膨出部内
に埋設して成型したことを特徴とするマンホールの側
塊。1. A cylindrical wall portion which is opened at the upper and lower sides and has a predetermined wall thickness and in which footrests are embedded, and a cylindrical wall portion which is bulged in an annular shape on the outer peripheral side of the upper and lower ends of the cylindrical wall portion. In a side mass of a manhole molded with upper and lower flanges, a bulge portion is formed on the outer surface of the tubular wall portion, and the embedded side end of the leg hanger is outward from the tubular wall portion. A side mass of a manhole, which is formed by extending and embedding it in the bulging portion. 【請求項２】 膨出部は、上鍔部と下鍔部とを接続して
形成されることを特徴とする請求項１に記載のマンホー
ルの側塊。2. The side block of the manhole according to claim 1, wherein the bulging portion is formed by connecting the upper flange portion and the lower collar portion. 【請求項３】 側塊は、筒状壁部が断面円形状直壁であ
ることを特徴とする請求項１ないし２に記載のマンホー
ルの側塊。3. The side block of the manhole according to claim 1, wherein the side wall has a cylindrical wall portion having a straight wall with a circular cross section. 【請求項４】 側塊は、筒状壁部が断面楕円形状直壁で
あることを特徴とする請求項１ないし２に記載のマンホ
ールの側塊。4. The side block of a manhole according to claim 1, wherein the side wall has a cylindrical wall portion having a straight wall with an elliptical cross section. 【請求項５】 上鍔部と下鍔部は互いに同一の外径を有
し、膨出部が上鍔部と下鍔部との外周面に一致して形成
されることを特徴とする請求項３または４に記載のマン
ホールの側塊。5. The upper collar portion and the lower collar portion have the same outer diameter, and the bulging portion is formed so as to coincide with the outer peripheral surfaces of the upper collar portion and the lower collar portion. The side mass of the manhole according to Item 3 or 4. 【請求項６】 側塊は、筒状壁部が垂直に立ち上がる直
壁状部と下方にゆくに従い拡径する斜壁状部とを有する
片斜壁であることを特徴とする請求項１ないし２に記載
のマンホールの側塊。6. The side mass is a unilateral wall having a straight wall-shaped portion in which a tubular wall portion stands upright and a sloping wall-shaped portion whose diameter increases as it goes downward. Side mass of the manhole described in 2. 【請求項７】 上鍔部は下鍔部より外方に突出するとと
もに、膨出部が片斜壁の直壁状部側の下鍔部から立ち上
がり、下鍔部の外周面に一致して形成されることを特徴
とする請求項６に記載のマンホールの側塊。7. The upper collar portion projects outwardly from the lower collar portion, and the bulging portion rises from the lower collar portion on the straight wall-shaped portion of the sloping wall and conforms to the outer peripheral surface of the lower collar portion. The side mass of the manhole according to claim 6, which is formed.
JP6039222A 1994-02-14 1994-02-14 Side lump of manhole Pending JPH07224439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6039222A JPH07224439A (en) 1994-02-14 1994-02-14 Side lump of manhole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6039222A JPH07224439A (en) 1994-02-14 1994-02-14 Side lump of manhole

Publications (1)

Publication Number Publication Date
JPH07224439A true JPH07224439A (en) 1995-08-22

Family

ID=12547114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6039222A Pending JPH07224439A (en) 1994-02-14 1994-02-14 Side lump of manhole

Country Status (1)

Country Link
JP (1) JPH07224439A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101672029B1 (en) * 2015-08-14 2016-11-02 정성옥 Manhole coupler, manhole waterproof structure and construction method usibg this

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616657B2 (en) * 1978-02-24 1981-04-17
JPS5951849B2 (en) * 1980-11-28 1984-12-17 ロ−ヌ−プ−ラン・アンデュストリ Method for producing catalysts based on oxides of molybdenum and oxides of other metals
JPS6027159B2 (en) * 1976-12-08 1985-06-27 株式会社東芝 Lightning arrester

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027159B2 (en) * 1976-12-08 1985-06-27 株式会社東芝 Lightning arrester
JPS5616657B2 (en) * 1978-02-24 1981-04-17
JPS5951849B2 (en) * 1980-11-28 1984-12-17 ロ−ヌ−プ−ラン・アンデュストリ Method for producing catalysts based on oxides of molybdenum and oxides of other metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101672029B1 (en) * 2015-08-14 2016-11-02 정성옥 Manhole coupler, manhole waterproof structure and construction method usibg this

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