JP2016199894A - Joint reinforcement structure for manhole peripheral wall - Google Patents

Joint reinforcement structure for manhole peripheral wall Download PDF

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JP2016199894A
JP2016199894A JP2015079761A JP2015079761A JP2016199894A JP 2016199894 A JP2016199894 A JP 2016199894A JP 2015079761 A JP2015079761 A JP 2015079761A JP 2015079761 A JP2015079761 A JP 2015079761A JP 2016199894 A JP2016199894 A JP 2016199894A
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peripheral
manhole
joint
seam
manhole peripheral
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大津賀 則男
Norio Otsuga
則男 大津賀
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株式会社サンリツ
Sanritsu Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a joint reinforcement structure for a manhole peripheral wall formed by joining annular structure parts or blocks, the joint reinforcement structure preventing dislocation of the parts and impairment of a manhole function due to earthquake or other forms of ground change.SOLUTION: A structure is for reinforcing a joint P of a manhole peripheral wall 1 configured by vertically connecting a plurality of annular structure parts 1a, 1a with a connection member 2. The manhole peripheral wall 1 has a plurality of the circular arc-form connection members 2 provided along the joint P almost over an entire circumference, at a location covering the joint P between the annular structure parts 1a, 1a piled vertically. Each of the connection members 2 is fixed with a fixture 3 on the manhole peripheral wall 1 from an inner peripheral side, at locations above and below the joint P.SELECTED DRAWING: Figure 1

Description

本発明は、地震等の地盤変化に対応するマンホール周壁の継目を補強する構造に関するものである。   The present invention relates to a structure for reinforcing a seam of a manhole peripheral wall corresponding to ground changes such as an earthquake.

マンホールは、コンクリート製の複数の環状構造物を上下につなぎ合わせたものや、多数のコンクリートブロックをレンガ構造のように積み上げたもの等、様々な種類のものがある。   There are various types of manholes, such as a structure in which a plurality of concrete annular structures are connected one above the other and a structure in which a large number of concrete blocks are stacked like a brick structure.

特開平6−57810号公報JP-A-6-57810

上記したマンホールは、各環状構造物同士の間、あるいは各ブロック同士の間を連結手段で連結している。しかしながら、地盤変化によって各環状構造物同士の位置が横方向にずれたときに、その環状構造物同士の隙間から地下水や土砂がマンホール内に流れ込み、マンホールが機能しなくなる問題があった。   The above-described manholes are connected between the annular structures or between the blocks by connecting means. However, when the positions of the annular structures are shifted laterally due to ground change, there is a problem that groundwater or earth and sand flows into the manhole from the gap between the annular structures, and the manhole does not function.

本発明は、上記課題を鑑みてなされたものであり、地震等の地盤変化に対して環状構造物やブロック等で分割構成されるマンホールの各部がずれることなく、マンホールの機能が損なわれないマンホール周壁の継目補強構造を提供することにある。   The present invention has been made in view of the above problems, and manholes that do not impair the function of the manhole without shifting each part of the manhole divided by an annular structure or a block with respect to ground changes such as earthquakes. It is in providing the joint reinforcement structure of a surrounding wall.

本発明のうち請求項1記載の発明は、複数の環状構造物を連結部材で上下に連結してマンホール周壁を構成するマンホール周壁の継目を補強する構造であって、上下に積み上げた各環状構造物同士の継目を跨ぐ箇所に、複数の円弧状をなす連結部材を継目に沿ってほぼ全周に配置するとともに、継目を挟んだ上側と下側のマンホール周壁に対して各連結部材の内周側から固定具で固定してあることを特徴とする。 The invention according to claim 1 of the present invention is a structure in which a plurality of annular structures are connected up and down with a connecting member to reinforce the joint of the manhole peripheral wall constituting the manhole peripheral wall, and each annular structure stacked up and down A plurality of arc-shaped connecting members are arranged almost entirely along the seam at locations where the joints between the objects are straddled, and the inner circumference of each connecting member with respect to the upper and lower manhole peripheral walls across the seam It is fixed from the side with a fixing tool.

本発明のうち請求項2記載の発明は、複数のブロックをレンガ壁のように積み上げてマンホール周壁を構成するマンホール周壁の継目を補強する構造であって、レンガ壁を構成する並列に隣接した各ブロック同士の内周側の継目に沿って当接する縦材と、並列に連続して配置する各ブロック列の内周側に当接する横材とを備えており、縦材は、マンホール周壁のほぼ全高に亘って設けてあり、継目の位置が一致する各ブロック列に配置してあり、横材は、縦材が上記継目に当接していないブロックが並ぶ各ブロック列に配置してあり、縦材と横材の交差する箇所に、横材の内周側からマンホール周壁に固定具で固定してあることを特徴とする。 Invention of Claim 2 is a structure which reinforces the joint of the manhole surrounding wall which piles up a some block like a brick wall, and comprises a manhole surrounding wall among this invention, Comprising: Each adjoining in parallel which comprises a brick wall It is provided with a vertical member that abuts along the seam on the inner peripheral side of the blocks, and a transverse member that abuts on the inner peripheral side of each block row arranged in parallel. It is provided over the entire height, arranged in each block row where the joint positions coincide with each other, and the cross member is arranged in each block row in which the blocks where the vertical members are not in contact with the joint are arranged. It is characterized in that it is fixed to the manhole peripheral wall from the inner peripheral side of the cross member with a fixing tool at a location where the cross member and the cross member intersect.

本発明のうち請求項3記載の発明は、連結部材と固定具との間と、連結部材と固定具との間のうちの少なくとも連結部材と固定具の間に弾性部材を介在してあることを特徴とする。   According to a third aspect of the present invention, an elastic member is interposed between at least the connecting member and the fixing tool between the connecting member and the fixing tool and between the connecting member and the fixing tool. It is characterized by.

本発明のうち請求項4記載の発明は、連結部材は、地表開口部から入れることのできる大きさに分割形成してあることを特徴とする。   The invention according to claim 4 of the present invention is characterized in that the connecting member is divided and formed into a size that can be inserted from the ground surface opening.

本発明のうち請求項5記載の発明は、連結部材とマンホール周壁との当接箇所を被覆する止水層を設けていることを特徴とする。   The invention according to claim 5 of the present invention is characterized in that a water stop layer is provided to cover a contact portion between the connecting member and the manhole peripheral wall.

本発明のうち請求項1記載の発明によれば、上下に隣接する各環状構造物同士の継目をマンホール周壁の内周側から覆うように、複数の円弧状をなす連結部材を配置する。さらに、マンホール周壁の内周側に各連結部材を固定具で固定することにより、各環状構造物同士が堅牢に連結され、地盤変化によってマンホール周壁に外圧が加わっても各環状構造物のズレを防いで耐震補強がなされる。これにより、各環状構造物間の隙間から地下水や土砂がマンホール内に入り込むことがなくなり、マンホールの機能が損なわれない。   According to invention of Claim 1 among this invention, the connection member which makes | forms several circular arc shape is arrange | positioned so that the joint of each cyclic structure adjacent to the upper and lower sides may be covered from the inner peripheral side of a manhole surrounding wall. Furthermore, by fixing each connecting member to the inner peripheral side of the manhole peripheral wall with a fixture, each annular structure is firmly connected to each other, and even if external pressure is applied to the manhole peripheral wall due to ground change, the displacement of each annular structure is prevented. Anti-seismic reinforcement is made. Thereby, groundwater and earth and sand do not enter the manhole from the gaps between the annular structures, and the function of the manhole is not impaired.

本発明のうち請求項2記載の発明によれば、レンガ壁は、任意の一段目のブロック列に対して上段に積み上げられる二段目のブロック列は、ブロックを横方向に半個分移動して積み上げられる。この基本構造をうけて、上記のレンガ壁構造のマンホール周壁を構成する各ブロック列のうち、任意の一段目のブロック列において、隣接する各ブロック同士の継目を跨ぐ状態で縦材を配置することにより、一段目、三段目、五段目・・・と一列とばしで縦材が各ブロック同士の継目位置に配置される。また、縦材が継目に配置されない二段目、四段目・・・のブロック列には、横材が配置されることで、マンホール周壁を構成するすべてのブロックのマンホール内周側に縦材と横材のいずれかが配置される。さらに、縦材と横材が重なる箇所に対し、横材のマンホール内周側から固定具を打ち込んでマンホール周壁に固定することにより、固定具で各横材が各縦材をマンホール周壁側に押圧し、固定具と、その固定具による各横材からの押圧力で各縦材が堅牢にマンホール周壁に固定される。これにより、レンガ壁のようにブロックを積み上げて形成されたマンホール周壁であっても、耐震補強を施工することができる。   According to the invention described in claim 2 of the present invention, the second block row stacked on the upper stage with respect to the arbitrary first block row moves the block by a half in the horizontal direction. Stacked. With this basic structure, out of each block row constituting the manhole peripheral wall of the above brick wall structure, in the first row of blocks, the vertical members are arranged in a state straddling the joints of the adjacent blocks. As a result, the vertical members are arranged at the joint positions between the blocks in the first row, the third row, the fifth row,. In addition, the vertical members are arranged on the inner peripheral side of the manholes of all the blocks constituting the manhole peripheral wall by arranging the horizontal members in the block rows of the second, fourth,. And a cross member are arranged. Furthermore, by fixing the fixture to the manhole peripheral wall from the inner side of the manhole on the side where the vertical member overlaps with the cross member, each cross member presses the vertical member against the manhole peripheral wall side with the fixture. The vertical members are firmly fixed to the peripheral wall of the manhole by the pressing force from the horizontal members by the fixing tool and the fixing tool. Thereby, even if it is a manhole surrounding wall formed by piling up a block like a brick wall, earthquake-proof reinforcement can be constructed.

本発明のうち請求項3記載の発明によれば、固定具と連結部材との間と、固定具とマンホール周壁との間のうち、少なくとも固定具と連結部材の間に弾性部材を介在することにより、連結部材によって隣接する各環状構造物同士が堅牢に連結される一方で、固定具と連結部材の間、さらには、連結部材と固定具の間に介在する弾性部材によって、マンホール周壁における固定具が固定された箇所に発生する応力が分散される。これにより、マンホール周壁側への衝撃の伝達が緩和されて、マンホールを長期的な稼働を可能とする。   According to the third aspect of the present invention, an elastic member is interposed between at least the fixing member and the connecting member between the fixing member and the connecting member and between the fixing member and the manhole peripheral wall. The adjacent annular structures are firmly connected to each other by the connecting member, and fixed on the peripheral wall of the manhole by the elastic member interposed between the fixing member and the connecting member, and further between the connecting member and the fixing member. The stress generated at the place where the tool is fixed is dispersed. Thereby, the transmission of the impact to the manhole peripheral wall side is eased, and the manhole can be operated for a long time.

本発明のうち請求項4記載の発明によれば、連結部材が地表開口部から入れることのできる大きさに分割形成してあることにより、新設のマンホールのほか、既設マンホール周壁の継目補強も容易に行うことができる。   According to the invention described in claim 4 of the present invention, since the connecting member is divided and formed in a size that can be inserted from the surface opening, it is easy to reinforce the seam of the existing manhole peripheral wall in addition to the newly installed manhole. Can be done.

本発明のうち請求項5記載の発明によれば、連結部材とマンホール周壁の当接箇所を止水層で被覆することにより、万一、上下に積み重ねられた各環状構造物間の継目から地下水がマンホール周壁の内周側に浸水した場合、連結部材とマンホール周壁の当接箇所に被覆された止水層が地下水を堰き止める。これにより、万一、各環状構造物間の継目から地下水が入り込んだ場合であっても、マンホール内への浸水を防ぐことができるようになる。   According to the invention described in claim 5 of the present invention, by covering the contact portion between the connecting member and the peripheral wall of the manhole with a water-stopping layer, the groundwater should be connected to the seam between the annular structures stacked one above the other. When the water enters the inner peripheral side of the manhole peripheral wall, the water stop layer covered at the contact portion between the connecting member and the manhole peripheral wall blocks the groundwater. Thereby, even if it is a case where groundwater enters from the joint between each annular structure, it becomes possible to prevent inundation into the manhole.

本実施によるマンホール周壁の継目補強構造の全体を示す(a)は、縦断面図であり、(b)は、(a)中A−A線断面図である。(A) which shows the whole joint reinforcement structure of the manhole surrounding wall by this implementation is a longitudinal cross-sectional view, (b) is an AA sectional view taken on the line in (a). (a)(b)は図1中Bを拡大し、本実施によるマンホール周壁の継目補強構造の要部を示す縦断面図である。(A) and (b) are the longitudinal cross-sectional views which expand the B in FIG. 1, and show the principal part of the joint reinforcement structure of the manhole surrounding wall by this implementation. 本実施によるマンホール周壁の継目補強構造の作動状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the operation state of the joint reinforcement structure of the manhole surrounding wall by this implementation. (a)〜(d)は本実施によるマンホール周壁の継目補強構造の施工手順を示す簡略化した縦断面斜視図である。(A)-(d) is the simplified longitudinal cross-sectional perspective view which shows the construction procedure of the joint reinforcement structure of the manhole surrounding wall by this implementation. 本発明の他の実施形態のマンホール周壁の継目補強構造を示す(a)は、縦断面図であり、(b)は、(a)中C−C線横断面図である。(A) which shows the joint reinforcement structure of the manhole surrounding wall of other embodiment of this invention is a longitudinal cross-sectional view, (b) is a CC cross-sectional view in (a). 本発明の他の実施形態のマンホール周壁の継目補強構造を示す縦断面図であり(a)は、縦断面図であり、(b)は、(a)中Dを拡大して示す要部縦断面図である。It is a longitudinal cross-sectional view which shows the joint reinforcement structure of the manhole surrounding wall of other embodiment of this invention, (a) is a longitudinal cross-sectional view, (b) is the principal part longitudinal section which expands and shows D in (a) FIG. 本発明の他の実施形態のマンホール周壁の継目補強構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the joint reinforcement structure of the manhole surrounding wall of other embodiment of this invention.

以下に、図面に基づいて本発明によるマンホール周壁の継目補強構造の実施形態について説明する。
ここで、本実施において対象となるマンホールについて説明する。
マンホールは、複数のコンクリート製の環状構造物1a,1aを上下に積層してマンホール周壁1を構成するものである。また、各々の環状構造物1a,1aは、それぞれの外径と内径がほぼ同一寸法に形成してあり、各環状構造物1a,1aを上下に積み重ねたときには、内周部がほぼ面一なマンホール周壁1を形成することになる。
そして、本実施によるマンホール周壁の継目補強構造は、上記のマンホール周壁1に施工するものであり、図1(a)(b)と図2(a)(b)のように、マンホール周壁1を形成する上下に積層した各環状構造物1a,1a同士の継目Pに設けるものであり、連結部材2と、固定具3と、弾性部材4とを備えている。
Below, based on drawing, embodiment of the joint reinforcement structure of the manhole surrounding wall by this invention is described.
Here, the manhole which becomes object in this implementation is demonstrated.
The manhole is formed by stacking a plurality of concrete annular structures 1a, 1a in the vertical direction to form the manhole peripheral wall 1. Each of the annular structures 1a and 1a has an outer diameter and an inner diameter that are substantially the same. When the annular structures 1a and 1a are stacked one above the other, the inner peripheral portion is substantially flush. The manhole peripheral wall 1 is formed.
And the joint reinforcement structure of the manhole surrounding wall by this implementation is constructed to said manhole surrounding wall 1, As shown in FIG. 1 (a) (b) and FIG. 2 (a) (b), the manhole surrounding wall 1 is made. It is provided at the joint P between the respective annular structures 1a, 1a stacked on the upper and lower sides, and includes a connecting member 2, a fixture 3, and an elastic member 4.

連結部材2は、ステンレス製の板材を曲げ加工してほぼ円弧状をなすものであり、本実施のものでは、二つの連結部材2,2を配置すると、マンホール周壁1の内周側にほぼ一致するリング状となる。また、連結部材2の外周縁部には、その周方向に間隔をあけて複数の箇所に被固定部5が設けてあり、被固定部5には、連結部材2を貫通する挿通孔6が設けてある。   The connecting member 2 is formed by bending a stainless steel plate to form a substantially arc shape. In this embodiment, when the two connecting members 2 and 2 are arranged, the connecting member 2 substantially coincides with the inner peripheral side of the manhole peripheral wall 1. It becomes a ring shape. The outer peripheral edge of the connecting member 2 is provided with fixed portions 5 at a plurality of locations at intervals in the circumferential direction, and the fixed portion 5 has insertion holes 6 that penetrate the connecting member 2. It is provided.

固定具3は、図2(a)(b)と図3のようにネジ部3aと、ネジ部3aの長手方向の一端側に設けてある鍔部3bとから構成している。また、弾性部材4は、本実施のものではゴム製でリング形状をなしている。そして、弾性部材4は、上記の弾性部材連結部材2をマンホール周壁1の内周側に固定したときに、マンホール周壁1と連結部材2との間と、固定具3の鍔部3bとマンホール周壁1との間のそれぞれに介在することになる。   As shown in FIGS. 2 (a) and 2 (b) and FIG. 3, the fixture 3 includes a screw portion 3a and a flange portion 3b provided on one end side in the longitudinal direction of the screw portion 3a. The elastic member 4 is made of rubber and has a ring shape in this embodiment. When the elastic member connecting member 2 is fixed to the inner peripheral side of the manhole peripheral wall 1, the elastic member 4 is between the manhole peripheral wall 1 and the connecting member 2, the flange 3 b of the fixture 3 and the manhole peripheral wall. 1 is interposed in each.

本実施によるマンホール周壁の継目補強構造は、上記の連結部材2と固定具3と弾性部材4を用いて構成するが、その施工手順について以下に説明する。
第一の手順として、図4(a)のようにマンホール周壁1を構成する各環状構造物1a,1a同士の継目Pに固定具用のネジ穴7を開ける。
第二の手順として、図4(b)のように二つの連結部材2,2を各環状構造物1a,1a同士の内周側の継目のほぼ全周に沿わせる。このときに、弾性部材4をマンホール周壁1と連結部材2の間に挟む。
さらに、各連結部材2,2の被固定部5の挿通孔6をマンホール周壁1に設けたネジ穴7と一致させ、被固定部5の挿通孔6とネジ穴7に弾性部材4を通した固定具3のネジ部3aを連通し、連結部材2をマンホール周壁1に仮固定する。
第三の手順として、図4(c)のように仮固定してある各固定具3を締め込み、連結部材2で隣接する各環状構造物1a,1a同士を強固に連結する。このときに、固定具3に取り付けてある弾性部材4は、マンホール周壁1と連結部材2の間、及び鍔部3bと連結部材2の間のそれぞれに介在することになる。
第四の手順として、図4(d)のように連結部材2の外周側に液状のブチルゴムやモルタルなどの止水剤を塗布する。上記の止水剤の養生工程を終えてマンホール周壁1と連結部材2との隙間に止水層9を形成したら、本実施によるマンホール周壁1の継目補強構造の施工が完了する。
The joint reinforcing structure of the manhole peripheral wall according to the present embodiment is configured using the connecting member 2, the fixture 3, and the elastic member 4, and the construction procedure will be described below.
As a first procedure, as shown in FIG. 4 (a), a screw hole 7 for a fixture is formed in the joint P between the annular structures 1a and 1a constituting the manhole peripheral wall 1.
As a second procedure, as shown in FIG. 4 (b), the two connecting members 2 and 2 are arranged along substantially the entire circumference of the seam on the inner circumferential side between the annular structures 1a and 1a. At this time, the elastic member 4 is sandwiched between the manhole peripheral wall 1 and the connecting member 2.
Further, the insertion hole 6 of the fixed portion 5 of each connecting member 2, 2 is made to coincide with the screw hole 7 provided in the manhole peripheral wall 1, and the elastic member 4 is passed through the insertion hole 6 and the screw hole 7 of the fixed portion 5. The threaded portion 3a of the fixture 3 is communicated, and the connecting member 2 is temporarily fixed to the manhole peripheral wall 1.
As a third procedure, the fixtures 3 temporarily fixed as shown in FIG. 4C are tightened, and the adjacent annular structures 1a, 1a are firmly connected by the connecting member 2. At this time, the elastic member 4 attached to the fixture 3 is interposed between the manhole peripheral wall 1 and the connecting member 2, and between the flange 3 b and the connecting member 2.
As a fourth procedure, a water-stopping agent such as liquid butyl rubber or mortar is applied to the outer peripheral side of the connecting member 2 as shown in FIG. If the water-stopping layer 9 is formed in the gap between the manhole peripheral wall 1 and the connecting member 2 after finishing the water-stopper curing step, the construction of the seam reinforcing structure of the manhole peripheral wall 1 according to this embodiment is completed.

上記のように本実施によるマンホール周壁の継目補強構造は、以下に示す作用・効果を奏するものである。
連結部材2は、隣接する環状構造物1a,1a同士の継目Pの内周側に沿って配置してあり、さらに、上記の継目Pを上下に挟むように連結部材2を固定具3で固定する。これにより、上下に積み重ねた各環状構造物1a,1aは、連結部材2で連結することにより、上下に連続的なマンホール周壁1を形成する。さらに、弾性部材4がマンホール周壁1と連結部材2の間、及び固定具3の鍔部3bと連結部材2の間のそれぞれに介在することにより、マンホール周壁1が受けた外圧によって、マンホール周壁1から固定具3に伝わる衝撃と、固定具3から連結部材2に伝わる衝撃を弾性部材4で吸収する。これにより、各環状構造物1a,1aに加わる外側からの衝撃を固定具3や連結部材2がそのまま受けることなく、衝撃を緩和できることから、マンホール周壁1の破損もしにくくなる。
As described above, the joint reinforcing structure of the manhole peripheral wall according to the present embodiment has the following functions and effects.
The connecting member 2 is disposed along the inner peripheral side of the joint P between the adjacent annular structures 1a, 1a, and further, the connecting member 2 is fixed by the fixture 3 so as to sandwich the above-described joint P vertically. To do. Thereby, each annular structure 1a, 1a stacked up and down is connected by the connecting member 2 to form a continuous manhole peripheral wall 1 up and down. Further, since the elastic member 4 is interposed between the manhole peripheral wall 1 and the connecting member 2 and between the flange 3b of the fixture 3 and the connecting member 2, the manhole peripheral wall 1 is caused by the external pressure received by the manhole peripheral wall 1. The elastic member 4 absorbs the shock transmitted from the fixing tool 3 to the fixing member 3 and the shock transmitted from the fixing tool 3 to the connecting member 2. Thereby, since the impact can be relieved without receiving the impact from the outside applied to each annular structure 1a, 1a as it is, the manhole peripheral wall 1 is hardly damaged.

次に、本発明の他の実施形態のマンホール周壁の継目補強構造について、図5(a)(b)に基づいて説明する。
本実施では、図5(a)のように、複数のコンクリート製のブロック22をレンガ壁のようにマンホール周壁21を形成したものであり、ブロック22列を構成している左右に隣接する各ブロック22間の縦方向の継目Pの上に、ブロック22列を構成するブロック22が積み上げられる。このような配置状態でブロック22列を交互に積み上げていくことになる。本実施では、最下段に配置するブロック22列に各ブロック22,22同士の継目Pに縦材23を沿わせており、上記の縦材23は、マンホール周壁21の高さとほぼ同一寸法の長尺なものを使用している。これにより、マンホール周壁21を形成するすべてのブロック22に縦材23が当接することになる。また、マンホール周壁21の内周側に沿わせた各縦材23のさらにマンホールの内周側には、横材24を配置する。横材24は、上記した縦材23が配置されない縦方向の継目Pのあるブロック列に配置される。これにより、縦材23と横材24は、マンホール周壁21を構成するすべてのブロック22に配置される。さらに、固定具3は、上記の各縦材23と各横材23が交差する箇所をそれぞれマンホール周壁21に固定するものである。このときに、固定具3をマンホール周壁21に固定したときに、固定具3の鍔部3bに係止した各横材24が各縦材23を引き寄せるので、各縦材23がマンホール周壁21に押し付けられる。
Next, the joint reinforcement structure of the manhole surrounding wall of other embodiment of this invention is demonstrated based on Fig.5 (a) (b).
In the present embodiment, as shown in FIG. 5 (a), a plurality of concrete blocks 22 are formed with manhole peripheral walls 21 like brick walls, and each block adjacent to the left and right constituting a row of blocks 22 is formed. On the longitudinal seam P between 22, the blocks 22 constituting the block 22 row are stacked. In such an arrangement, the 22 rows of blocks are alternately stacked. In this embodiment, the vertical member 23 is placed along the joint P between the blocks 22 and 22 in the row of the blocks 22 arranged at the bottom, and the vertical member 23 has a length substantially the same as the height of the manhole peripheral wall 21. Using a scale. Thereby, the vertical member 23 comes into contact with all the blocks 22 forming the manhole peripheral wall 21. In addition, a cross member 24 is disposed on the inner peripheral side of the manhole of each vertical member 23 along the inner peripheral side of the manhole peripheral wall 21. The cross member 24 is arranged in a block row having a vertical seam P in which the above-described vertical member 23 is not arranged. Thereby, the vertical member 23 and the horizontal member 24 are arranged in all the blocks 22 constituting the manhole peripheral wall 21. Furthermore, the fixing tool 3 fixes the location where each said vertical member 23 and each horizontal member 23 cross | intersect to the manhole surrounding wall 21, respectively. At this time, when the fixing tool 3 is fixed to the manhole peripheral wall 21, each cross member 24 locked to the flange 3 b of the fixing tool 3 draws each vertical member 23, so that each vertical member 23 contacts the manhole peripheral wall 21. Pressed.

上記のように形成したマンホール周壁21の継目補強構造は、以下に示すような作用・効果を奏するものである。
上記したように、縦材23と横材24が交差する箇所を固定具3でマンホール周壁21に固定したときに、各横材24が各縦材23をマンホール周壁21に押し付けるように押圧する。これにより、マンホール周壁21を構成する各ブロック22は、継目Pを跨ぐかたちで、すべての縦材23と横材24がマンホールの内周側からマンホール周壁21に押さえ付けられることになり、マンホール周壁21を形成する各ブロック22間の接合強度が確保される。これにより、マンホール周壁21の耐久性が向上することになる。
The joint reinforcing structure of the manhole peripheral wall 21 formed as described above has the following functions and effects.
As described above, when the portion where the vertical member 23 and the horizontal member 24 intersect each other is fixed to the manhole peripheral wall 21 with the fixture 3, each horizontal member 24 presses the vertical member 23 against the manhole peripheral wall 21. As a result, each of the blocks 22 constituting the manhole peripheral wall 21 is such that all the vertical members 23 and the cross members 24 are pressed against the manhole peripheral wall 21 from the inner peripheral side of the manhole so as to straddle the joint P. The bonding strength between the respective blocks 22 forming 21 is ensured. Thereby, the durability of the manhole peripheral wall 21 is improved.

本発明のマンホール周壁の継目補強構造は、特許請求の範囲に記載する範囲内であれば、上記した第一実施形態と第二実施形態に示す環状構造物1aやブロック22、連結部材2、固定具3、弾性部材4、縦材23等の各構成部品の形状や大きさ等に限定されない。
環状構造物1aは、上記実施形態では上下二つのものでマンホール周壁1を構成しているが、マンホールの規模によってその個数も替えることができ、さらに、実施形態で示した円形状のものの他、矩形のものでもよい。
If the joint reinforcement structure of the surrounding wall of the manhole of this invention is in the range described in a claim, the cyclic structure 1a shown in the above-mentioned 1st embodiment and 2nd embodiment, the block 22, the connection member 2, fixation It is not limited to the shape and size of each component such as the tool 3, the elastic member 4, and the vertical member 23.
In the above embodiment, the annular structure 1a is composed of two upper and lower manhole peripheral walls 1, but the number of manholes can be changed depending on the scale of the manhole, and in addition to the circular one shown in the embodiment, It may be rectangular.

連結部材2は、上記実施形態では、ほぼ垂直なマンホール周壁1,21に取り付けるものついて示したが、図6(a)のように、マンホール周壁1,21の上部が傾斜する斜壁タイプのマンホールに使用したものである。この連結部材2は、図6(b)のように、その断面形状がマンホール周壁1の垂直壁を構成すると斜壁の境界部に対応したほぼ「く」の字型をなしており、マンホール周壁1の垂直壁を形成する環状構造物1aと斜壁を形成する環状構造物1bの継目Pに沿わせることができる。また、180°の半円弧状のものを使用しているが、マンホールの地表開口部8から入れることのできる大きさであればよいから、120°や90°、60°の範囲をカバーするものでもよい。   In the above embodiment, the connecting member 2 is attached to the substantially vertical manhole peripheral walls 1 and 21, but as shown in FIG. 6A, the slant wall type manhole in which the upper portions of the manhole peripheral walls 1 and 21 are inclined. It is what was used for. As shown in FIG. 6 (b), the connecting member 2 has a substantially "<" shape corresponding to the boundary portion of the slant wall when the cross-sectional shape forms a vertical wall of the manhole peripheral wall 1, and the manhole peripheral wall It can be along the joint P of the annular structure 1a that forms one vertical wall and the annular structure 1b that forms the oblique wall. In addition, although a 180 ° semicircular arc shape is used, it may be of a size that can be inserted from the manhole surface opening 8 and covers a range of 120 °, 90 °, and 60 °. But you can.

縦材23は、マンホール周壁1の内周側から継目Pを覆うとともに、継目Pを挟んだ両側部に固定具3をそれぞれ挿通できる巾寸法を有するものが選択される。また、ブロック22をレンガ壁のように積み上げて形成するマンホール周壁21のうち、斜壁タイプのマンホール周壁21に縦材23を使用する場合、縦材23は、図7のように、垂直壁のみに取り付ければ充分な補強がなされるが、図示は省略するが、斜壁を構成する各ブロック22の内周側に縦材23を沿わせて固定することも可能である。固定具3は、マンホール周壁1,21と連結部材2や縦材23、横材24にそれぞれ係止するものであれば、上記実施形態のものに限定しない。弾性部材4は、マンホール周壁1,21と連結部材2の間、及び固定具3の鍔部3bと連結部材2との間を緩衝するものであればよく、上記実施形態で使用したゴム材の他、バネ材等の弾性を有するものであれば特に限定しない。   The vertical member 23 is selected so as to cover the joint P from the inner peripheral side of the manhole peripheral wall 1 and to have a width dimension that allows the fixture 3 to be inserted into both sides sandwiching the joint P. Further, among the manhole peripheral walls 21 formed by stacking the blocks 22 like brick walls, when the vertical member 23 is used for the inclined wall type manhole peripheral wall 21, the vertical member 23 is only a vertical wall as shown in FIG. Although sufficient reinforcement is made if it is attached to, the vertical member 23 can be fixed along the inner peripheral side of each block 22 constituting the inclined wall, although illustration is omitted. The fixture 3 is not limited to the above-described embodiment as long as the fixture 3 is engaged with the manhole peripheral walls 1 and 21 and the connecting member 2, the longitudinal member 23, and the transverse member 24, respectively. The elastic member 4 only needs to buffer between the manhole peripheral walls 1 and 21 and the connecting member 2 and between the flange 3b of the fixture 3 and the connecting member 2, and is made of the rubber material used in the above embodiment. In addition, it will not specifically limit if it has elasticity, such as a spring material.

1,21 マンホール周壁
1a,1b 環状構造物
2 連結部材
3 固定具
3a ネジ部
3b 鍔部
4 弾性部材
5 被固定部
6 挿通孔
7 ネジ穴
8 地表開口部
9 止水層
22 ブロック
23 縦材
24 横材
P 継目
1,21 Manhole peripheral wall 1a, 1b Annular structure 2 Connecting member
DESCRIPTION OF SYMBOLS 3 Fixing tool 3a Screw part 3b Eaves part 4 Elastic member 5 Fixed part 6 Insertion hole 7 Screw hole 8 Ground surface opening part 9 Water stop layer 22 Block 23 Vertical member 24 Cross member P Seam

Claims (5)

複数の環状構造物を連結部材で上下に連結してマンホール周壁を構成するマンホール周壁の継目を補強する構造であって、
上下に積み上げた各環状構造物同士の継目を跨ぐ箇所に、複数の円弧状をなす連結部材を継目に沿ってほぼ全周に配置するとともに、継目を挟んだ上側と下側のマンホール周壁に対して各連結部材の内周側から固定具で固定してあることを特徴とするマンホール周壁の継目補強構造。
It is a structure that reinforces the joint of the manhole peripheral wall constituting the manhole peripheral wall by connecting a plurality of annular structures up and down with a connecting member,
A plurality of arc-shaped connecting members are arranged almost entirely along the seam at a location straddling the seam between the annular structures stacked up and down, with respect to the upper and lower manhole peripheral walls across the seam. A manhole peripheral wall seam reinforcement structure, wherein the connecting member is fixed from the inner peripheral side of each connecting member with a fixture.
複数のブロックをレンガ壁のように積み上げてマンホール周壁を構成するマンホール周壁の継目を補強する構造であって、
レンガ壁を構成する並列に隣接した各ブロック同士の内周側の継目に沿って当接する縦材と、並列に連続して配置する各ブロック列の内周側に当接する横材とを備えており、縦材は、マンホール周壁のほぼ全高に亘って設けてあり、継目の位置が一致する各ブロック列に配置してあり、
横材は、縦材が上記継目に当接していないブロックが並ぶ各ブロック列に配置してあり、
縦材と横材の交差する箇所に、横材の内周側からマンホール周壁に固定具で固定してあることを特徴とするマンホール周壁の継目補強構造。
A structure in which a plurality of blocks are stacked like a brick wall to reinforce the seam of the manhole peripheral wall constituting the manhole peripheral wall,
A vertical member that abuts along the seam on the inner peripheral side of each block adjacent to each other that constitutes the brick wall, and a lateral member that abuts on the inner peripheral side of each row of blocks arranged in parallel. The vertical members are provided over almost the entire height of the peripheral wall of the manhole, and are arranged in each block row where the positions of the seams coincide with each other.
The cross member is arranged in each block row in which the blocks whose vertical members are not in contact with the seam are arranged,
A manhole peripheral wall seam reinforcement structure characterized in that it is fixed to the manhole peripheral wall from the inner peripheral side of the cross member by a fixture at the intersection of the vertical member and the cross member.
連結部材と固定具との間と、連結部材と固定具との間のうちの少なくとも連結部材と固定具の間に弾性部材を介在してあることを特徴とする請求項1記載のマンホール周壁の継目補強構造。   2. The manhole peripheral wall according to claim 1, wherein an elastic member is interposed between at least one of the connection member and the fixture and between the connection member and the fixture. Seam reinforcement structure. 連結部材は、地表開口部から入れることのできる大きさに分割形成してあることを特徴とする請求項1又は3記載のマンホール周壁の継目補強構造。   The joint reinforcing structure for a manhole peripheral wall according to claim 1 or 3, wherein the connecting member is divided and formed into a size that can be inserted from the surface opening. 連結部材とマンホール周壁との当接箇所を被覆する止水層を設けていることを特徴とする請求項1、3又は4記載のマンホール周壁の継目補強構造。   5. The manhole peripheral wall joint reinforcing structure according to claim 1, further comprising a water stop layer that covers a contact portion between the connecting member and the manhole peripheral wall.
JP2015079761A 2015-04-09 2015-04-09 Joint reinforcement structure for manhole peripheral wall Pending JP2016199894A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109425A (en) * 1976-12-13 1978-08-29 Carlessimo John J Circular type manholes
JPH0813523A (en) * 1994-06-23 1996-01-16 Kowa Kasei Kk Manhole joint
JP2005098068A (en) * 2003-09-03 2005-04-14 Norio Otsuga Manhole body and manhole connector
US20110008108A1 (en) * 2009-07-07 2011-01-13 Clevenger Clifford O Structure and method for manhole wall sealing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109425A (en) * 1976-12-13 1978-08-29 Carlessimo John J Circular type manholes
JPH0813523A (en) * 1994-06-23 1996-01-16 Kowa Kasei Kk Manhole joint
JP2005098068A (en) * 2003-09-03 2005-04-14 Norio Otsuga Manhole body and manhole connector
US20110008108A1 (en) * 2009-07-07 2011-01-13 Clevenger Clifford O Structure and method for manhole wall sealing

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