JP2673115B2 - Manhole bottom plate and method of installing the bottom plate - Google Patents
Manhole bottom plate and method of installing the bottom plateInfo
- Publication number
- JP2673115B2 JP2673115B2 JP7122602A JP12260295A JP2673115B2 JP 2673115 B2 JP2673115 B2 JP 2673115B2 JP 7122602 A JP7122602 A JP 7122602A JP 12260295 A JP12260295 A JP 12260295A JP 2673115 B2 JP2673115 B2 JP 2673115B2
- Authority
- JP
- Japan
- Prior art keywords
- height
- manhole
- bottom plate
- flat plate
- screw
- 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.)
- Expired - Fee Related
Links
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、マンホールの設置を容
易化できるマンホール底版と、この底版の設置方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole bottom slab capable of facilitating the installation of a manhole and a method of installing the bottom slab.
【０００２】[0002]
【従来の技術】図Ａはマンホールの配置状態を示す平面
図である。道路５０の道筋等に沿って設けられる下水路
５１の分岐点Ａおよび折曲路Ｂ部分には、マンホール５
３が設けられる。図Ｂは、このマンホール５３を示す側
断面図である。マンホール５３は、図示の如く組み立て
型が用いられる。底部には砕石等による基礎工事部５４
ａが設けられ、この上に底版５４ｂを水平状態で設置
し、この上に管取付壁５５、直壁５６、片斜壁５７、調
整ブロック５８、蓋部５９が順次重ねられ、マンホール
５３を形成する。2. Description of the Related Art FIG. A is a plan view showing the arrangement of manholes. The manhole 5 is provided at the branch point A and the bend B of the sewer 51 provided along the route of the road 50.
3 is provided. FIG. B is a side sectional view showing the manhole 53. As the manhole 53, an assembly type is used as illustrated. At the bottom part, there is a foundation construction part 54 made of crushed stone.
a is provided, the bottom plate 54b is installed in a horizontal state on this, and a pipe mounting wall 55, a straight wall 56, a sloping wall 57, an adjusting block 58, and a lid 59 are sequentially stacked on this to form a manhole 53. To do.
【０００３】マンホール５３の管取付壁５５には、下水
路５１を構成する配管（例えば所定径の直管）６０が接
続される。管取付壁５５は、所定高さを有し、側壁５５
ａに接続される直管６０部分同士をインバート６１にて
接続し、所定の流路を形成している。A pipe (for example, a straight pipe having a predetermined diameter) 60 forming the sewer 51 is connected to the pipe mounting wall 55 of the manhole 53. The pipe mounting wall 55 has a predetermined height, and the side wall 55
A portion of the straight pipe 60 connected to a is connected by an invert 61 to form a predetermined flow path.
【０００４】[0004]
【発明が解決しようとする課題】従来は、上記マンホー
ルを設置する際に、底版５４ｂの設置には非常に時間と
手間がかかっていた。底版５４ｂを設置するには、下部
の基礎工事部５４ａの上面を水平にしなければならない
前提がある。この基礎工事部５４ａは砕石で形成される
ので、沈下防止のために十分に転圧される必要がある
が、この転圧作業により上面が水平状態とならないこと
が多い。Conventionally, it took a very long time and labor to install the bottom plate 54b when installing the manhole. In order to install the bottom plate 54b, there is a premise that the upper surface of the lower foundation construction part 54a must be horizontal. Since the foundation work portion 54a is formed of crushed stone, it needs to be sufficiently compacted to prevent subsidence, but this compaction work often does not cause the upper surface to be horizontal.
【０００５】また、基礎工事部５４ａの上面が水平状態
であっても、底版５４ｂを設置した後に基礎工事部５４
ａの一部が沈下し底版５４ｂが傾くことがある。このよ
うな場合には、底版５４ｂを持ち上げ傾いた側の底版５
４ｂの下部に新たな砕石を投入する等の作業を行ってい
る。このように、従来のマンホール施工時には、底版５
４ｂを水平に設置するまでの作業に手間がかかるもので
あった。Further, even if the upper surface of the foundation construction section 54a is horizontal, the foundation construction section 54a is installed after the bottom slab 54b is installed.
A part of a may sink and the bottom slab 54b may tilt. In such a case, the bottom plate 54b is lifted and tilted.
Work such as adding new crushed stone to the lower part of 4b is underway. In this way, the bottom slab 5 is used during conventional manhole construction.
It took a lot of work to install the 4b horizontally.
【０００６】ところで、底版５４ｂが傾いたまま上部に
管取付壁５５を設置すると、この管取付壁５５も傾く問
題がある。やや傾いた状態で管取付壁５５から上のマン
ホール躯体を設置すると、経時的にこの傾きが増大し、
マンホール躯体が破壊される。また、接続されている配
管６０との接続位置も破壊されこの部分から汚水が地中
に流れ出し、地下水を汚染する。これは、特に地盤が弱
い場所や上部の道路５０上の車の振動が大きい箇所で発
生しやすい。By the way, if the pipe mounting wall 55 is installed on the upper part while the bottom plate 54b is inclined, there is a problem that the pipe mounting wall 55 is also inclined. If the manhole body above the pipe mounting wall 55 is installed in a slightly tilted state, this tilt increases with time,
The manhole body is destroyed. Further, the connection position with the connected pipe 60 is also destroyed, and sewage flows out into the ground from this portion and pollutes groundwater. This is likely to occur particularly in a place where the ground is weak or where the vehicle vibration on the upper road 50 is large.
【０００７】また、底版５４ｂの傾きが小さい場合で
も、この上に載る管取付壁５５が同様に傾くから、この
管取付壁５５に接続されている上流及び下流の配管６０
の取付け高さ位置が変わり、同時に上流−下流間の落差
が変化する問題がある。通常、この落差は２〜３ｃｍで
あり、底版５４ｂの傾きが大きい場合には、落差が逆転
し、流出入関係が逆とさえなりえる。Even if the bottom plate 54b has a small inclination, the pipe mounting wall 55 placed on the bottom plate 54b is also inclined, so that the upstream and downstream pipes 60 connected to the pipe mounting wall 55 are connected.
There is a problem that the mounting height position of is changed, and at the same time, the drop between the upstream side and the downstream side is changed. Usually, this head is 2 to 3 cm, and when the bottom plate 54b has a large inclination, the head may be reversed and the inflow / outflow relationship may be reversed.
【０００８】本発明は、上記課題を解決するためになさ
れたものであり、水平状態で設置することができるマン
ホール底版とこの底版の設置方法を提供して、マンホー
ルの設置を容易化できることを目的としている。The present invention has been made to solve the above problems, and an object of the present invention is to provide a manhole bottom slab that can be installed in a horizontal state and a method of installing the bottom slab to facilitate the installation of the manhole. I am trying.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明のマンホール底版は、水流の接続部に設けら
れる組み立て型のマンホールの底部に設けられる底版
（１）において、所定厚さを有する平板状に形成された
底版（１）と、前記底版の上面（１ａ）の縁部に形成さ
れ、下流の配管位置を示す基準指標溝（２ａ）と、該底
版の上面に複数個インサート成形されたネジ溝金具
（４）と、該ネジ溝金具に螺合され上面が平皿面（５
ａ）に形成され回転により各平皿面同士が水平となるよ
う高さ方向に突出量が調整自在なネジ（５）とからなる
高さ調整具（３ａ〜３ｃ）と、を具備し、前記複数の高
さ調整具のうち１つを前記底版の中央と前記基準指標溝
との直線上に設けたことを特徴としている。In order to achieve the above object, the manhole bottom slab of the present invention has a predetermined thickness in the bottom slab (1) provided at the bottom of an assembly type manhole provided at a water flow connection part. A flat plate-shaped bottom plate (1), a reference index groove (2a) which is formed at the edge of the top plate (1a) of the bottom plate and indicates a downstream piping position, and a plurality of insert moldings are formed on the top plate of the bottom plate. Screw groove fitting (4) and the upper surface of the screw groove fitting (4)
a) a height adjusting tool (3a to 3c) including a screw (5) whose protrusion amount is adjustable in the height direction so that each flat plate surface becomes horizontal when rotated. One of the height adjusting tools is provided on a straight line between the center of the bottom plate and the reference index groove.
【００１０】また、マンホール底版の設置方法は、前記
マンホールが設置される箇所の掘削位置底部にて砕石を
転圧して基礎工事部（５４ａ）を略水平状態に施工した
後、下流の配管位置に底版（１）上の基準指標溝（２
ａ）が一致する角度となるよう前記基礎工事部上に底版
（１）を設置した後、前記底版の上面（１ａ）に設けら
れた高さ調整具（３ａ〜３ｃ）のうち、前記基準指標溝
部分に位置する高さ調整具（３ａ）のネジ（５）を回転
させて該ネジの平皿面（５ａ）の上面位置を水準測量し
下流の配管位置上で予め設計された設計位置となるよう
高さ調整した後、前記１つの高さ調整具（３ａ）の平皿
面（５ａ）の高さ位置を基準として、他の高さ調整具の
平皿面が水平となるよう各高さ調整具のネジ（５）を回
転させて高さ調整した後、前記底版の上面に該高さ調整
具の平皿面同士を結ぶ面位置まで所定厚さのモルタル施
工で施工部（１５）を形成することにより、前記底版の
上面位置（１５ａ）を地面に対して水平状態でかつ、予
め設計された高さ位置に面一にすることを特徴としてい
る。Further, the manhole bottom slab is installed by crushing stones at the bottom of the excavation position where the manhole is installed to construct the foundation construction part (54a) in a substantially horizontal state, and then at the downstream piping position. Reference index groove (2) on the bottom plate (1)
After the bottom slab (1) is installed on the foundation construction part so that the angles a) are the same, the reference index among the height adjusting tools (3a to 3c) provided on the upper surface (1a) of the bottom slab. By rotating the screw (5) of the height adjuster (3a) located in the groove portion, the upper surface position of the flat plate surface (5a) of the screw is leveled, and the design position is designed in advance on the downstream piping position. After adjusting the heights, the height adjusting tools are adjusted so that the flat plate surfaces of the other height adjusting tools are horizontal with reference to the height position of the flat plate surface (5a) of the one height adjusting tool (3a). After adjusting the height by rotating the screw (5), the working portion (15) is formed on the upper surface of the bottom plate by mortar construction of a predetermined thickness up to the surface position connecting the flat plate surfaces of the height adjusting tool. Allows the upper surface position (15a) of the bottom plate to be in a horizontal state with respect to the ground and has a height designed in advance. It is characterized in that flush to the location.
【００１１】[0011]
【作用】上記底版１の上面１ａの複数箇所には、高さ位
置が調整自在な高さ調整具３ａ〜３ｃ）が設けられてお
り、各々ネジ回転で頂部の高さ位置が可変自在である。
そして、基礎工事部５４ａの状態が地面に対し厳密に水
平状態でなくとも、粗い水平状態とした後に、底版１の
基準指標溝２ａを下流の配管位置に向ければそのまま設
置することができる。底版１設置後には、作業者がこの
底版１上面１ａ位置にて基準指標溝２ａ部分の高さ調整
具３ａを設計位置に高さ調整した後、他の高さ調整具３
ｂ，３ｃを高さ調整具３ａと同一高さとなるようそれぞ
れの頂部同士間に水平器を載置して水平状態に調整し、
底版１の上面１ａにて各高さ調整具３ａ〜３ｃの平皿面
５ａの面位置までモルタルで施工部１５を施工すること
により、上面位置１５ａは厳密な水平状態にでき予め設
計された高さ位置にできる。この底版１の上面位置１５
ａには、管取付壁５５等のマンホールを構成する躯体が
地面に対し直角方向に積み重ねられる。The height adjusting tools 3a to 3c) having adjustable height positions are provided at a plurality of positions on the upper surface 1a of the bottom plate 1, and the height position of the top can be freely changed by screw rotation. .
Even if the foundation work portion 54a is not in a strictly horizontal state with respect to the ground, it can be installed as it is if the reference index groove 2a of the bottom slab 1 is directed to the downstream piping position after the rough horizontal state. After the bottom plate 1 is installed, an operator adjusts the height of the height adjusting tool 3a of the reference index groove 2a at the position of the top surface 1a of the bottom plate 1 to the designed position, and then the other height adjusting tools 3
Adjust b and 3c so that they are at the same height as the height adjuster 3a by placing a leveler between the tops of the height adjusters 3a,
By constructing the construction portion 15 with mortar up to the surface position of the flat plate surface 5a of each of the height adjusting tools 3a to 3c on the upper surface 1a of the bottom plate 1, the upper surface position 15a can be set in a strict horizontal state and the height is designed in advance. Can be in position. Top surface position 15 of this bottom plate 1
In a, the skeletons that form the manhole, such as the pipe mounting wall 55, are stacked in a direction perpendicular to the ground.
【００１２】[0012]
【実施例】図１は、本発明のマンホール底版を示す斜視
図である。この底版１は、コンクリート製で所定径及び
厚さを有する平板状に形成されている。上面１ａの縁部
には９０度間隔で計４か所に複数の指標溝２ａ、２ｂが
溝形成され、また中央部には、中央位置を示す指標溝２
ｃがそれぞれ溝形成されている。1 is a perspective view showing a manhole bottom slab of the present invention. The bottom slab 1 is made of concrete and formed in a flat plate shape having a predetermined diameter and thickness. A plurality of index grooves 2a and 2b are formed at a total of four positions at the edge of the upper surface 1a at 90-degree intervals, and the index groove 2 indicating the central position is formed in the central portion.
Grooves c are formed.
【００１３】指標溝２ａは、配管時の基準位置となる流
出位置であり、上部に載せられる管取付壁５５に接続さ
れる下流の配管の管径の芯位置である。また、指標溝２
ｂは、基準となる指標溝２ａと反対位置、及び指標溝２
ａと直交する位置の計３か所に設けられる。The index groove 2a is an outflow position serving as a reference position during piping, and is a core position of the pipe diameter of the downstream pipe connected to the pipe mounting wall 55 placed on the upper portion. Also, the index groove 2
b is a position opposite to the reference index groove 2a, and the index groove 2
It is provided at a total of three positions orthogonal to a.
【００１４】そして、底版１の上面１ａには、縁部から
所定長さ内方位置にそれぞれ高さ調整具３（３ａ〜３
ｃ）が設けられる。この高さ調整具３ａ〜３ｃは、中央
の指標溝２ｃを中心として等角度（図示の例では１２０
度毎３か所）に設けられるもので、うち、１か所は、基
準指標溝２ａ側部位置に設けられている。尚、この高さ
調整具３は、少なくとも３か所以上設けるようにする。Then, on the upper surface 1a of the bottom slab 1, height adjusting tools 3 (3a to 3a) are respectively located inward from the edges by a predetermined length.
c) is provided. The height adjusters 3a to 3c are arranged at an equal angle (120 in the illustrated example) about the central index groove 2c.
It is provided at three positions each time), and one of them is provided at the side position of the reference index groove 2a. The height adjuster 3 should be provided in at least three places.
【００１５】図２の部分断面図に示すように、高さ調整
具３は、底版１内に予めインサート成形されたネジ溝金
具４と、このネジ溝金具４に螺合する平皿ネジ５で構成
されており、ネジ５の回転により、頂部の平皿面５ａが
上下方向に移動する。ここで、平皿ネジ５が下方に移動
し、ネジ溝金具４内に全て収容された状態で平皿ネジ５
の平皿面５ａが底版１の上面１ａから突出しないため
に、この高さ調整具３が設けられた箇所には、それぞれ
所定深さの凹溝１ｂが形成され、ネジ溝金具４は、この
凹溝１ｂの下面から下方にインサートされる。平皿面５
ａには、回転用溝５ｂが溝形成されており、この回転用
溝５ｂにドライバ等の治具あるいは硬貨等を差し込み回
転させることができる。As shown in the partial sectional view of FIG. 2, the height adjuster 3 is composed of a thread groove metal fitting 4 which is insert-molded in advance in the bottom plate 1 and a flat plate screw 5 which is screwed into the screw groove metal fitting 4. The rotation of the screw 5 moves the top flat plate surface 5a in the vertical direction. Here, the flat plate screw 5 is moved downward and is completely accommodated in the thread groove fitting 4,
Since the flat plate surface 5a of the bottom plate 1 does not protrude from the upper surface 1a of the bottom slab 1, a recessed groove 1b having a predetermined depth is formed at each position where the height adjusting tool 3 is provided, and the screw groove fitting 4 is provided with the recessed groove 1b. It is inserted downward from the lower surface of the groove 1b. Flat plate surface 5
A groove 5b for rotation is formed in a, and a jig such as a driver or a coin can be inserted and rotated in the groove 5b for rotation.
【００１６】次に、上記構成の底版１を用いたマンホー
ルの設置について説明する。まず、設計に応じ所定深さ
まで掘られたマンホール坑の底部に砕石を投入し、転圧
をかけて基礎工事部５４ａを施工する。この基礎工事部
５４ａは、転圧後に上面がある程度水平であればよく、
厳密に水平状態とする必要はない。理由は後述する。ま
た、この基礎工事部５４ａの上面高さ位置は、設計時の
高さ位置よりも若干低めとする。Next, the installation of manholes using the bottom plate 1 having the above structure will be described. First, crushed stones are thrown into the bottom of a manhole pit dug to a predetermined depth according to the design, and a compaction is applied to construct a foundation construction section 54a. The foundation work portion 54a may have a flat upper surface after rolling,
It does not have to be exactly horizontal. The reason will be described later. Further, the height position of the upper surface of the foundation construction portion 54a is slightly lower than the height position at the time of design.
【００１７】次に、基礎工事部５４ａ上に、上記底版１
を設置する。このとき、下流の配管位置に前記基準とな
る指標溝２ａを向けて設置する。このとき、底版１の上
面１ａは設計時の高さ位置よりも若干低い位置となる。Next, the bottom slab 1 is placed on the foundation construction section 54a.
Is installed. At this time, the reference index groove 2a is installed at the downstream pipe position. At this time, the upper surface 1a of the bottom plate 1 is at a position slightly lower than the designed height position.
【００１８】次に、作業者は、底版１の上面１ａに乗
り、底版１に設けられた高さ調整具３ａ〜３ｃのうち、
基準となる高さ調整具３ａを調整して、この高さ調整具
３ａの平皿ネジ５の平皿面５ａを設計された高さ位置に
する。このとき、水準測量が行われる。この水準測量
は、地表位置（マンホール坑の側部）にはレベル水準器
と別の作業者が配置され、マンホール坑から外部に突出
する長さを有する目盛付測定尺（スタッフ）を用いて、
内部の作業者が平皿ネジ５の平皿面５ａ上部に載せて行
う。Next, the operator rides on the upper surface 1a of the bottom plate 1 and selects one of the height adjusters 3a to 3c provided on the bottom plate 1.
The height adjuster 3a serving as a reference is adjusted to bring the flat plate surface 5a of the flat plate screw 5 of the height adjuster 3a to the designed height position. At this time, leveling is performed. In this leveling, a worker is placed at the surface position (side of the manhole pit) and a worker different from the level, using a graduated scale (staff) with a length protruding from the manhole pit to the outside.
An operator inside puts it on the flat plate surface 5a of the flat plate screw 5 and performs it.
【００１９】これにより、高さ調整具３ａの平皿ネジ５
を回転させて平皿面５ａを所定量上昇させることによ
り、平皿面５ａの位置を設計した底版１の仮想上面位置
（レベル）にすることができる。即ち、前記若干低く設
置された底版１の上面１ａから突出する平皿面５ａの位
置が設計された底版１の上面位置である。As a result, the flat plate screw 5 of the height adjusting tool 3a
By rotating the flat plate surface 5a by a predetermined amount, the position of the flat plate surface 5a can be set to the virtual upper surface position (level) of the designed bottom plate 1. That is, the position of the flat plate surface 5a protruding from the upper surface 1a of the bottom plate 1 which is set slightly lower is the upper surface position of the designed bottom plate 1.
【００２０】次に、作業者は、図３に示すように、２つ
の高さ調整具３ａ−３ｂに渡り基準器１０を渡して水平
状態を測定する。これは、他の高さ調整具３ａ−３ｃ、
及び３ｂ−３ｃ間でも同様に行う。このとき、各平皿ネ
ジ５の平皿面５ａは平らに形成されており、各２つの平
皿ネジ５が配置された間隔に相当する長さを有する水平
器（水平測定器）１０を用いれば、この平皿面５ａ上に
載置することができる。Next, as shown in FIG. 3, the worker passes the reference device 10 over the two height adjusters 3a-3b to measure the horizontal state. This is another height adjustment tool 3a-3c,
And 3b-3c are similarly performed. At this time, the flat plate surface 5a of each flat plate screw 5 is formed flat, and if a level gauge (horizontal measuring device) 10 having a length corresponding to the interval where the two flat plate screws 5 are arranged is used, It can be placed on the flat plate surface 5a.
【００２１】尚、平皿ネジ５同士の長さに相当する平板
やアングル材を、この平皿ネジ５上に載置し、この上に
水平器１０を設置してもよい。この高さ調整具の調整
は、作業者が底版上に乗った状態のまま行えるため、底
版の水平調整の作業に係るマンホールの掘削径を拡げず
とも容易に行える。Alternatively, a flat plate or an angle member corresponding to the length of the flat plate screws 5 may be placed on the flat plate screws 5 and the leveler 10 may be installed thereon. Since the height adjustment tool can be adjusted while the operator is on the bottom slab, the height adjustment tool can be easily adjusted without expanding the excavation diameter of the manhole for horizontal adjustment of the bottom slab.
【００２２】ここで、高さ調整具３ａ−３ｂ間の水平測
定時には、既に基準位置が得られた高さ調整具３ａを除
く他方の高さ調整具３ｂを回転させ、この他方の高さ調
整具３ｂの平皿面５ａの高さ位置を高さ調整具３ａの平
皿面５ａの位置と水平状態にする。同様に、高さ調整具
３ａ−３ｃ間でも高さ調整具３ａ側を基準とし、他方の
高さ調整具３ｃ側の高さを合わせる。この後、確認とし
て３ｂ−３ｃ間の水平度を測定する。Here, at the time of horizontal measurement between the height adjusters 3a-3b, the other height adjuster 3b except the height adjuster 3a whose reference position has already been obtained is rotated to adjust the other height. The height position of the flat plate surface 5a of the tool 3b is made horizontal with the position of the flat plate surface 5a of the height adjusting tool 3a. Similarly, between the height adjusters 3a-3c, the height adjuster 3a side is used as a reference, and the height of the other height adjuster 3c is adjusted. After that, as a confirmation, the horizontality between 3b and 3c is measured.
【００２３】このように、高さ調整具３ａを基準として
３回に渡り水平器１０の位置を代えて水平状態を測定調
整を行った状態で全ての高さ調整具３の平皿面５ａは、
設置後の地面に対し水平な状態となる。そして、次に、
底版１の上面１ａ上をモルタル施工し、平皿面５ａがこ
の施工部１５の上面位置１５ａに一致するよう行う。こ
の施工位置１５ａは設計された底版１の上面位置とな
る。As described above, the flat plate surfaces 5a of all the height adjusting tools 3 are measured and adjusted in the horizontal state by changing the position of the leveler 10 three times with reference to the height adjusting tools 3a.
It will be horizontal to the ground after installation. And then,
Mortar is applied on the upper surface 1a of the bottom plate 1 so that the flat plate surface 5a coincides with the upper surface position 15a of the applied portion 15. The construction position 15a is the upper surface position of the designed bottom plate 1.
【００２４】これにより、図４の側面図に示すように、
底版１が一方に傾斜して設置された場合であっても、モ
ルタルの施工部１５の上面位置１５ａを水平状態とする
ことができるようになる。尚、図には、底版１の傾斜状
態の視認を容易化するためにこの底版１の傾斜角度を誇
張して図示してある。As a result, as shown in the side view of FIG.
Even when the slab 1 is installed so as to be inclined to one side, the upper surface position 15a of the mortar working portion 15 can be placed in a horizontal state. In addition, in order to facilitate visual recognition of the tilted state of the bottom slab 1, the tilt angle of the bottom slab 1 is exaggerated in the drawing.
【００２５】したがって、基礎工事部５４ａの水平度を
厳密に取らなくてもこの底版１を用いることにより、底
版１の上面１ａは常に地面に対し水平な状態とすること
ができる。この後、底版１の上部には、管取付壁５５が
設置される。この管取付壁５５は、図４に示すような予
め底面５５ａを有して成形されたものが設置できる。以
降、この管取付壁５５等のマンホールを構成する躯体
は、全て地面に対し直角に設置することができるように
なる。Therefore, by using this bottom slab 1 without requiring the levelness of the foundation construction portion 54a to be strictly regulated, the upper surface 1a of the bottom slab 1 can always be horizontal with respect to the ground. After this, the pipe mounting wall 55 is installed on the top of the bottom plate 1. The pipe mounting wall 55 can be installed by being molded in advance with a bottom surface 55a as shown in FIG. After that, all the skeletons constituting the manhole such as the pipe mounting wall 55 can be installed at right angles to the ground.
【００２６】ところで、モルタルの施工部１５が固化す
るには、２日程度の期間が必要であるが、本発明のマン
ホール用底版では、前記モルタルの施工部１５を施工し
た直後に管取付壁５５等の躯体を順次載せていくことが
できる。即ち、モルタルの施工部１５が固化しない状態
においても、底版１上の高さ調整具３ａ〜３ｂが管取付
壁５５の底面５５ａを支持するため、施工部１５に直接
この管取付壁５５の重量が負荷されることがない。尚、
施工部１５形成後に底版１の周囲は砂埋めされ、底版１
及び管取付壁５５等躯体は側部が固定される。By the way, it takes about two days for the mortar working portion 15 to solidify. In the manhole bottom plate of the present invention, the pipe mounting wall 55 is formed immediately after the mortar working portion 15 is worked. The skeletons such as etc. can be sequentially placed. That is, even when the mortar construction part 15 is not solidified, the height adjusters 3a to 3b on the bottom slab 1 support the bottom surface 55a of the pipe mounting wall 55, and therefore the weight of the pipe mounting wall 55 is directly attached to the construction part 15. Is not loaded. still,
The periphery of the bottom slab 1 is filled with sand after the construction portion 15 is formed.
The side portions of the body such as the pipe mounting wall 55 are fixed.
【００２７】また、上記実施例では、高さ調整具３を１
２０度づつ３か所に設けた構成としたが、他、直交する
十時型で４か所に設けることも考えられるが、水平を取
る最小個数は３個であり、これ以下であると上面１ａの
面全体の水平度がとれないことになるとともに、管取付
壁５５を支えられない。In the above embodiment, the height adjusting tool 3 is
Although the structure is provided in three places of 20 degrees each, it is also possible to provide it in four places in the cross-shaped 10 o'clock type, but the minimum number of horizontal is three, and if it is less than this, the top surface The levelness of the entire surface of 1a cannot be obtained, and the pipe mounting wall 55 cannot be supported.
【００２８】[0028]
【発明の効果】本発明のマンホール底版によれば、上面
にはネジ回転により高さ方向に突出量が調整自在な高さ
調整具が複数設けられ、また、下流の配管位置に対応す
る基準指標溝が設けられており、この基準指標溝を用い
て底版の設置角度が容易に得られ、基準指標溝部分の高
さ調整具の高さを基準として他の高さ調整具を同一高さ
に調整することにより、この高さ調整具の頂部を全て設
計位置にて水平状態にする作業を容易に行うことができ
る。高さ調整具は、上面が平皿面とされたネジでなり、
底版上でこのネジを回転させて各高さ調整具の平皿面の
位置を容易に調整でき、これにより、底版の上面位置の
水平度を容易に得ることができ、底版の上部位置に設け
られる管取付壁等のマンホールの躯体を全て下流の配管
位置を基準として地面に対し垂直状態にすることができ
る。According to the manhole bottom slab of the present invention, a plurality of height adjusting tools are provided on the upper surface so that the protrusion amount can be adjusted in the height direction by screw rotation, and the reference index corresponding to the downstream pipe position. A groove is provided, and the installation angle of the bottom slab can be easily obtained using this reference index groove, and other height adjustment tools can be set to the same height with the height of the height adjustment tool of the reference index groove as a reference. By adjusting the height adjustment tool, it is possible to easily perform the work of horizontally setting the entire top portion of the height adjustment tool at the design position. The height adjuster is a screw whose upper surface is a flat plate,
By rotating this screw on the bottom slab, the position of the flat plate surface of each height adjuster can be easily adjusted, so that the levelness of the top surface of the bottom slab can be easily obtained, and it is provided at the top position of the bottom slab. It is possible to make all the manhole structures such as the pipe mounting wall vertical to the ground with reference to the downstream pipe position.
【００２９】また、マンホール底版の設置方法によれ
ば、基礎工事部が厳密な水平状態でなくとも基準指標溝
を用いてマンホールを下流の配管位置に合わせて設置し
た後、基準指標溝部分の高さ調整具の高さ位置を設計位
置に調整した後、他の高さ調整具が同一高さ位置に調整
するだけで底版の上面を地面に対して水平化し、かつ底
版の上面位置を設計位置にできるようになる。これによ
り、基準工事部を粗い水平状態のままでも底版を設置す
る作業に移行でき、かつ、管取付壁等のマンホールの躯
体を全て地面に対し垂直状態にすることができるように
なり、作業を簡素化できるようになる。また、高さ調整
具は底版の上面に設けられ、かつ高さ調整具は頂部が平
皿面であるため、作業者が底版の上に乗った状態のま
ま、高さ調整具の調整とモルタルの施工部を形成できる
ようになる。同時に底版の設置時における水平調整の作
業はマンホールの掘削径を拡げずとも容易に行える。According to the method of installing the manhole bottom slab, even if the foundation construction section is not in a strictly horizontal state, the reference index groove is used to install the manhole in accordance with the downstream pipe position, and then the height of the reference index groove portion is increased. After adjusting the height position of the height adjustment tool to the design position, the other height adjustment tools can be adjusted to the same height position to level the top surface of the bottom slab with respect to the ground, and the top position of the bottom slab to the design position. You will be able to. As a result, it is possible to move to the work of installing the bottom slab even if the standard construction part is in a rough horizontal state, and it is possible to make all the manhole skeletons such as pipe mounting walls vertical to the ground. It can be simplified. Also, since the height adjuster is provided on the upper surface of the bottom slab and the top of the height adjuster is a flat plate surface, the height adjuster and the mortar can be adjusted while the operator is on the bottom slab. The construction part can be formed. At the same time, the horizontal adjustment work when installing the bottom slab can be easily performed without expanding the excavation diameter of the manhole.
【図１】本発明のマンホール底版を示す斜視図。FIG. 1 is a perspective view showing a manhole bottom slab of the present invention.
【図２】高さ調整具を示す部分断面図。FIG. 2 is a partial cross-sectional view showing a height adjuster.
【図３】水平測定状態を示す平面図。FIG. 3 is a plan view showing a horizontal measurement state.
【図４】底版の設置状態を示す側面図。FIG. 4 is a side view showing an installed state of the bottom slab.
【図５】マンホールの配置状態を示す平面図。FIG. 5 is a plan view showing an arrangement state of manholes.
【図６】同マンホールを示す側断面図。FIG. 6 is a side sectional view showing the manhole.
１…底版、１ａ…上面、２ａ〜２ｃ…指標溝、３（３ａ
〜３ｃ）…高さ調整具、４…ネジ溝金具、５…平皿ネ
ジ、５ａ…平皿面、５ｂ…回転用溝、１０…水平器、１
５…施工部、１５ａ…施工部の上面位置、５４ａ…基礎
工事部、５５…管取付壁、５５ａ…底面。1 ... Bottom plate, 1a ... Top surface, 2a-2c ... Index groove, 3 (3a
~ 3c) ... Height adjusting tool, 4 ... Screw groove metal fitting, 5 ... Flat plate screw, 5a ... Flat plate surface, 5b ... Rotating groove, 10 ... Leveler, 1
5 ... Construction part, 15a ... Top position of construction part, 54a ... Foundation construction part, 55 ... Pipe mounting wall, 55a ... Bottom surface.
Claims (2)
マンホールの底部に設けられる底版（１）において、 所定厚さを有する平板状に形成された底版（１）と、前記底版の上面（１ａ）の縁部に形成され、下流の配管
位置を示す基準指標溝（２ａ）と、 該底版の上面に複数個インサート成形されたネジ溝金具
（４）と、該ネジ溝金具に螺合され上面が平皿面（５
ａ）に形成され回転により各平皿面同士が水平となるよ
う高さ方向に突出量が調整自在なネジ（５）とからなる
高さ調整具（３ａ〜３ｃ）と、を具備し、前記複数の高さ調整具のうち１つを前記底版
の中央と前記基準指標溝との直線上に設けたことを特徴
とする マンホール底版。1. A bottom slab (1) provided at the bottom of an assembly-type manhole provided at a water flow connection part, wherein the bottom slab (1) is formed into a flat plate having a predetermined thickness, and an upper surface (1a ) of the bottom slab. ) Formed on the edge of the downstream pipe
Reference index groove (2a) indicating a position, and a plurality of screw groove fittings insert-molded on the upper surface of the bottom plate
(4) is screwed into the thread groove fitting, and the upper surface is a flat plate surface (5
It is formed in a) so that the flat plate surfaces become horizontal by rotation.
A height adjuster (3a to 3c) including a screw (5) whose protrusion amount is adjustable in the height direction, and one of the plurality of height adjusters is Bottom plate
It is provided on a straight line between the center of the and the reference index groove
And manhole bottom plate.
マンホールの底部に前記請求項１記載の底版（１）を設
けるマンホール底版の設置方法において、 前記マンホールが設置される箇所の掘削位置底部にて砕
石を転圧して基礎工事部（５４ａ）を略水平状態に施工
した後、下流の配管位置に底版（１）上の基準指標溝（２ａ）が
一致する角度となるよう前記基礎工事部上に 底版（１）
を設置した後、前記底版の上面（１ａ）に設けられた高さ調整具（３ａ
〜３ｃ）のうち、前記基準指標溝部分に位置する高さ調
整具（３ａ）のネジ（５）を回転させて該ネジの平皿面
（５ａ）の上面位置を水準測量し下流の配管位置上で予
め設計された設計位置となるよう高さ調整した後、 前記１つの高さ調整具（３ａ）の平皿面（５ａ）の高さ
位置を基準として、他の高さ調整具の平皿面が水平とな
るよう各高さ調整具のネジ（５）を回転させて高さ調整
した後、 前記底版の上面に該高さ調整具の平皿面同士を結ぶ面位
置まで所定厚さのモルタル施工で施工部（１５）を形成
することにより、 前記底版の上面位置（１５ａ）を地面に対して水平状態
でかつ、予め設計された高さ位置に面一にすることを 特
徴とするマンホール底版の設置方法。2. An assembled mold provided at a water flow connecting portion.
The bottom plate (1) according to claim 1 is provided at the bottom of the manhole.
In the method for installing a manhole bottom slab, the crushed stones are compacted at the bottom of the excavation position where the manhole is installed to construct the foundation construction part (54a) in a substantially horizontal state, and then the bottom slab (1) is installed at the downstream piping position. The upper reference index groove (2a)
Bottom plate (1) on the foundation construction section so that the angles are the same.
After installing the height adjustment tool (3a) provided on the upper surface (1a) of the bottom plate.
~ 3c), the height adjustment located in the reference index groove portion
Rotate the screw (5) of the aligning tool (3a) to rotate the flat plate surface of the screw.
Level the upper surface position of (5a) and make a preliminary measurement on the downstream piping position.
The height of the flat plate surface (5a) of the one height adjuster (3a) after the height is adjusted to the designed position
The flat plate surface of the other height adjustment tools should be horizontal with respect to the position.
Adjust the height by rotating the screw (5) of each height adjustment tool
After that, the surface position connecting the flat plate surfaces of the height adjusting tool to the upper surface of the bottom plate.
Form a construction part (15) by mortar construction with a predetermined thickness until installation
To make the top surface position (15a) of the bottom plate horizontal with respect to the ground.
A method of installing a manhole bottom slab, which is characterized by being flush with a predesigned height position .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7122602A JP2673115B2 (en) | 1995-05-22 | 1995-05-22 | Manhole bottom plate and method of installing the bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7122602A JP2673115B2 (en) | 1995-05-22 | 1995-05-22 | Manhole bottom plate and method of installing the bottom plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08311899A JPH08311899A (en) | 1996-11-26 |
| JP2673115B2 true JP2673115B2 (en) | 1997-11-05 |
Family
ID=14840006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7122602A Expired - Fee Related JP2673115B2 (en) | 1995-05-22 | 1995-05-22 | Manhole bottom plate and method of installing the bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2673115B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812158B (en) * | 2017-03-22 | 2018-10-23 | 杭州富阳新远新能源有限公司 | A kind of anti-blocking well lid of the rotation anti-theft that municipal public engineering uses |
| CN108915071A (en) * | 2017-03-22 | 2018-11-30 | 杭州富阳新远新能源有限公司 | A kind of odor-resistant anti-clogging well cover mechanism of municipal works |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6014144U (en) * | 1983-07-07 | 1985-01-30 | 江端商事株式会社 | Substrate for leveling the bottom of a manhole |
-
1995
- 1995-05-22 JP JP7122602A patent/JP2673115B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08311899A (en) | 1996-11-26 |
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