JPH10212732A - Flexible joint for manhole structure and manhole structure - Google Patents
Flexible joint for manhole structure and manhole structureInfo
- Publication number
- JPH10212732A JPH10212732A JP9018567A JP1856797A JPH10212732A JP H10212732 A JPH10212732 A JP H10212732A JP 9018567 A JP9018567 A JP 9018567A JP 1856797 A JP1856797 A JP 1856797A JP H10212732 A JPH10212732 A JP H10212732A
- Authority
- JP
- Japan
- Prior art keywords
- flexible joint
- manhole structure
- cylindrical body
- joint
- spring constant
- 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.)
- Withdrawn
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、筒体、特にコンク
リート製の筒体を積み重ねて構成されるマンホール構造
体において、前記筒体の接合部に装着され、地震等によ
り前記筒体をずらす力が作用しても筒体の端部の破損、
装着部のはずれ等の発生を防止する可撓性継手、ならび
にこのような可撓性継手を装着したマンホール構造体に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole structure formed by stacking cylinders, particularly concrete cylinders, mounted on a joint of the cylinders and displacing the cylinders by an earthquake or the like. Damages the end of the cylinder,
The present invention relates to a flexible joint for preventing occurrence of detachment of a mounting portion, and a manhole structure equipped with such a flexible joint.
【0002】[0002]
【従来の技術】図11には従来のマンホールの構造を例
示した。コンクリート製の筒体1は垂直方向に積み重ね
られ、最下段の筒体1には水平方向に敷設される地中埋
設管21との接続開口部22が設けられている。各筒体
の上下端部は嵌合可能な形状を有しており、接合部3を
形成する。各端部はこのまま、もしくは端面に接着剤や
公知技術のシール材を使用して接続され接合部3が形成
される。2. Description of the Related Art FIG. 11 illustrates a conventional manhole structure. The concrete cylinders 1 are vertically stacked, and the lowermost cylinder 1 is provided with a connection opening 22 with an underground pipe 21 laid horizontally. The upper and lower ends of each cylindrical body have a shape that can be fitted, and form a joint 3. Each end is connected as it is or with an end face using an adhesive or a sealing material of a known technique to form a joint 3.
【0003】上下水道通路、或いは送電線、電話線等を
収容した地下構造物の保守、点検用のマンホール構造体
には、周囲よりの漏水防止手段を欠かすことができず、
また、地震、地滑り等が起こった場合にマンホール構造
体を構成するコンクリート製等の筒体がずれたり、筒体
や装着部が破損したりするとやはり漏水の原因となるた
め、ずれ、破損を防止することが必要である。[0003] Manhole structures for maintenance and inspection of underground structures accommodating water and sewage passages or transmission lines, telephone lines, etc., are indispensable to have means for preventing water leakage from the surroundings.
In addition, when an earthquake, landslide, etc. occurs, the cylinders made of concrete, etc. that make up the manhole structure are displaced, or the cylinders and mounting parts are damaged, which also causes water leakage, preventing displacement and damage. It is necessary to.
【0004】漏水防止手段としては特開平7−9087
0号公報、特開平7−150581号公報、特開平−2
47564号公報に開示されたシール材が知られてお
り、また筒体のずれを防止する技術として実開昭56−
154447号公報が、さらに、ずれ防止とともにシー
ルを行う技術として実公昭62−5091号公報記載の
技術が知られている。As means for preventing water leakage, Japanese Unexamined Patent Publication No. 7-9087
0, JP-A-7-150581, JP-A-215081
A sealing material disclosed in Japanese Patent No. 47564 is known, and a technique for preventing displacement of a cylindrical body has been proposed.
Japanese Unexamined Patent Publication (Kokai) No. Sho 62-5091 discloses a technique for preventing slippage and sealing.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、特開平
7−90870号公報、特開平7−150581号公
報、特開平−247564号公報にそれぞれ開示された
シール材は、地震などにより筒体をずらす力が作用した
場合に筒体端部の破損、はずれを防止することができな
い。However, the sealing materials disclosed in JP-A-7-90870, JP-A-7-150581 and JP-A-247564, respectively, have a force for displacing the cylinder due to an earthquake or the like. However, it is not possible to prevent the end portion of the cylindrical body from being damaged or detached.
【0006】実開昭56−154447号公報記載の技
術は、ずれ防止効果はあるものの外力の作用を吸収する
効果はなく、地震時に発生するような強い外力を受けた
場合には、この部材もしくは筒体のいずれかが破壊さ
れ、結果的に漏水が生じる。The technique described in Japanese Utility Model Application Laid-Open No. 56-15447 has an effect of preventing slippage, but has no effect of absorbing the action of an external force. Either of the cylinders is destroyed, resulting in water leakage.
【0007】また、実公昭62−5091号公報記載の
技術もわずかな外力で筒体のはずれは生じず、シール効
果も優れているが、前述の技術同様に大きな外力が作用
すると筒体が破損するおそれが高いものである。さら
に、この技術は筒体の端部形状が限定され、既成の筒体
に適用できるものではなく、施工時においてもナットを
閉める工数等が必要であり、コスト的に高くつく技術で
ある。The technique described in Japanese Utility Model Publication No. Sho 62-5091 does not cause the cylinder to be dislodged by a small external force and has an excellent sealing effect. However, the cylinder is damaged when a large external force acts as in the above-mentioned technique. It is highly likely to occur. Further, this technique is limited in the shape of the end portion of the cylindrical body and cannot be applied to an existing cylindrical body. It requires a man-hour for closing a nut even during construction, and is a technique that is costly.
【0008】本発明の目的は、積み重ねられたコンクリ
ート製等の筒体に強い水平方向の外力が作用して筒体の
接合部に相対移動が生じても接合部分における部材や筒
体端部の破損が生じにくく、隣接する筒体がずれても漏
水を生じ難く、かつ簡便な方法にて施工可能なマンホー
ル構造体用可撓性継手並びに漏水の生じ難いマンホール
構造体を提供することにある。[0008] An object of the present invention is to provide a structure in which members and end portions of a cylindrical portion are joined even if a strong horizontal external force acts on the stacked cylindrical members made of concrete or the like to cause relative movement at the joint portion. An object of the present invention is to provide a flexible joint for a manhole structure which is hardly damaged, does not easily leak water even if adjacent cylinders are displaced, and can be constructed by a simple method, and a manhole structure which hardly causes water leakage.
【0009】[0009]
【課題を解決するための手段】本願請求項1に記載の発
明は、コンクリート製等の筒体を積み重ねて構成される
マンホール構造体において、前記筒体の接合部において
上下の筒体の間に装着される可撓性継手であって、上部
の前記筒体の下端部との第1接当面と下部の前記筒体の
上端部との第2接当面を備え、水平方向に剪断変形可能
であり、縦ばね定数/剪断ばね定数比が5以上であるマ
ンホール構造体用可撓性継手に関するものである。縦ば
ね定数/剪断ばね定数比が5以下では横方向の変形を十
分許容すると縦方向の荷重による沈下が大きくなり、本
発明の目的が十分に達成できない。縦ばね定数/剪断ば
ね定数比の上限は特に限定されるものではなく、例えば
後述する金属板とゴム状弾性体を積層しその繰り返しを
多くするとこの比は実質上いくらでも高くすることがで
きる。ただし、マンホールに於ける筒体の積み重ねの高
さ、筒体個々の高さを考慮するとこの比は30以下程度
であることがコスト的にも好ましい。According to a first aspect of the present invention, there is provided a manhole structure formed by stacking cylinders made of concrete or the like, wherein a joint portion between the cylinders is provided between upper and lower cylinders. A flexible joint to be mounted, comprising a first contact surface with a lower end of the upper cylinder and a second contact surface with an upper end of the lower cylinder, and capable of being sheared in a horizontal direction. The present invention relates to a flexible joint for a manhole structure having a ratio of longitudinal spring constant / shear spring constant of 5 or more. If the ratio of the vertical spring constant / shear spring constant is 5 or less, if the deformation in the horizontal direction is sufficiently allowed, the settlement due to the load in the vertical direction becomes large, and the object of the present invention cannot be sufficiently achieved. The upper limit of the longitudinal spring constant / shear spring constant ratio is not particularly limited. For example, if a metal plate described later and a rubber-like elastic body are laminated and the number of repetitions thereof is increased, this ratio can be substantially increased. However, considering the stacking height of the cylinders in the manhole and the height of the individual cylinders, this ratio is preferably about 30 or less in terms of cost.
【0010】ここで縦ばね定数並びに剪断ばね定数は、
建築用免振ゴムの縦ばね定数、横ばね定数等と同様に測
定され、例えば横剛性試験機を使用し、実際の使用状況
に近い条件で測定される数値である。Here, the longitudinal spring constant and the shear spring constant are:
It is a value measured in the same manner as the vertical spring constant, the horizontal spring constant, and the like of the vibration-isolating rubber for a building, and is measured under conditions close to actual use using, for example, a lateral rigidity tester.
【0011】剪断変形可能である可撓性継手を筒体の接
合部に装着することにより地震などによる水平方向の力
を受けて筒体が相対移動しても本発明の可撓性継手の剪
断変形によりその変形が吸収される結果、筒体や接続部
の破壊、それに伴う漏水を防止することが可能となる。[0011] By mounting a flexible joint capable of shearing deformation at the joint of the cylindrical body, the shearing of the flexible joint of the present invention can be performed even if the cylindrical body relatively moves under horizontal force due to an earthquake or the like. As a result of the deformation being absorbed by the deformation, it is possible to prevent breakage of the cylindrical body and the connecting portion and the accompanying water leakage.
【0012】コンクリート製筒体を積み重ねて構成され
るマンホール構造体は、筒体が複数段積み重ねられた構
成が一般的な設計であり、下層における接合部に負荷さ
れる荷重は、筒体の自重及び大型トラック等の車両重量
を合わせて約30t程度が想定される。このような荷重
が負荷されたときに大きな圧縮変形をすればマンホール
が地面より沈下して道路に凹部生じ、好ましくない。従
って、マンホール構造に使用する可撓性継手は縦方向の
剛性、即ち縦ばね定数が高いものであることが望まし
い。一方、水平方向の剛性、即ち剪断ばね定数を小さく
することにより筒体の水平方向の相対移動による変形が
許容される。縦ばね定数/剪断ばね定数の比が5以上で
あることが上記要求を満足する。A manhole structure constituted by stacking concrete cylinders is generally designed to have a structure in which cylinders are stacked in a plurality of stages, and the load applied to the joint in the lower layer is the weight of the cylinder itself. It is assumed that the total weight of the vehicle such as a large truck and the like is about 30 t. If a large compressive deformation occurs when such a load is applied, the manhole sinks below the ground and a recess is formed on the road, which is not preferable. Therefore, it is desirable that the flexible joint used in the manhole structure has high rigidity in the longitudinal direction, that is, a high longitudinal spring constant. On the other hand, by reducing the horizontal rigidity, that is, the shear spring constant, deformation of the cylindrical body due to relative horizontal movement is allowed. The above requirement is satisfied when the ratio of longitudinal spring constant / shear spring constant is 5 or more.
【0013】地震に於ける路面と埋設管敷設層との水平
方向のずれは、数百mmに及ぶ大きなものであると予想
される。一方、一般にゴム状弾性体と称されるものは4
00%以上の剪断変形を許容するものであり、ゴム状弾
性体の種類の選択、必要に応じて使用する高合成材料の
種類や形状の選択・設計、並びに特に剪断変形可能部分
の形状を含めた可撓性継手全体の形状の設計、等を適切
に実施することにより、上述の路面と埋設管の間のずれ
を筒体や接合部の破損を起こすことなく許容することが
できる。The horizontal displacement between the road surface and the buried pipe laying layer during an earthquake is expected to be as large as several hundred mm. On the other hand, what is generally called a rubber-like elastic body is 4
A shear deformation of at least 00% is permitted, including the selection of the type of rubber-like elastic body, the selection and design of the type and shape of the high-synthetic material to be used as necessary, and the shape of the shear-deformable portion in particular. By appropriately designing the shape of the flexible joint as a whole, etc., the above-described displacement between the road surface and the buried pipe can be tolerated without causing damage to the cylindrical body and the joint.
【0014】本発明の可撓性継手は上部の前記筒体の下
端部との第1接当面と下部の前記筒体の上端部との第2
接当面を備えた剪断変形可能な挟着部を備えたものであ
ることが好ましく、このような構成とすることにより、
既成の筒体の端面に嵌合部が形成されている場合、可撓
性継手の第1、第2の接当面の形状が筒体の嵌合部の形
状に一致することになって、可撓性継手にも嵌合部が形
成され、筒体と嵌合状態で装着するが可能となる。ま
た、筒体の端面が平坦である場合には筒体端部側面に及
ぶ第1、第2の接当面を形成して鍔状部とすることによ
り、やはり嵌合状態にて装着可能となる。The flexible joint according to the present invention has a second contact surface between a first contact surface of the upper cylinder with the lower end thereof and an upper end of the lower cylinder.
It is preferable to include a shear-deformable holding portion having a contact surface, and by adopting such a configuration,
When the fitting portion is formed on the end face of the existing tubular body, the shape of the first and second contact surfaces of the flexible joint matches the shape of the fitting portion of the tubular body, A fitting portion is also formed on the flexible joint so that the flexible joint can be mounted in a fitted state with the cylindrical body. When the end surface of the cylindrical body is flat, the first and second contact surfaces extending to the side surface of the end of the cylindrical body are formed into a flange-like portion, so that the cylindrical body can be mounted in a fitted state. .
【0015】接続される筒体の上端部、下端部と本件発
明の可撓性継手は、筒体を相対移動させる力を受けた場
合に接続が外れることのないように装着されていれば特
に装着方法に限定はなく、接着剤を使用して接着されて
もよいが、上述のように既成のコンクリート製の筒体の
端部の嵌合形状をそのまま利用した嵌合部、筒体の端部
を収容する鍔状体、またはこれらの双方が可撓性継手に
備えられていることが好ましく、剪断変形時の筒体と可
撓性継手が外れるのを防止する効果を有する。嵌合と接
着剤の使用を併せて行えばなお確実な効果が期待でき
る。The upper end and the lower end of the cylinder to be connected and the flexible joint of the present invention are particularly provided that they are mounted so as not to be disconnected when subjected to a force for relatively moving the cylinder. The mounting method is not limited, and may be bonded using an adhesive. However, as described above, the fitting portion using the fitting shape of the end portion of the existing concrete tubular body, the end of the tubular body is used. It is preferable that the flexible joint is provided with a flange-shaped body for housing the portion or both of them, and has an effect of preventing the tubular body and the flexible joint from being detached during shear deformation. If the fitting and the use of the adhesive are performed together, a certain effect can be expected.
【0016】本願発明の可撓性継手の前記挟着部は、前
記第1接当面と第2接当面に沿って配設された少なくと
も1つの高剛性材料、好ましくは金属材料、繊維材料、
樹脂材料から選択される1種以上の材料を少なくとも1
つ含むものであることが好ましく、特に前記高剛性材料
は層状にて1層以上配設されることが好ましい。このよ
うに剪断変形方向に沿って高剛性材料含有層を配設した
可撓性継手は剪断ばね定数を低く維持したまま縦ばね定
数を高くする作用効果を有する。特に、高剛性材料を板
状等に形成し、ゴム状弾性体の層を挟んで積層すること
により剪断ばね定数を余り変化させることなく縦ばね定
数を大幅に高くすることができる。[0016] The holding portion of the flexible joint according to the present invention includes at least one high-rigidity material, preferably a metal material, a fiber material, provided along the first contact surface and the second contact surface.
At least one material selected from resin materials
Preferably, one or more layers of the high-rigidity material are provided in a layered form. Thus, the flexible joint in which the high-rigidity material-containing layer is disposed along the shear deformation direction has the effect of increasing the longitudinal spring constant while keeping the shear spring constant low. In particular, by forming a high-rigidity material in a plate shape or the like and laminating with a rubber-like elastic body interposed therebetween, the longitudinal spring constant can be significantly increased without significantly changing the shear spring constant.
【0017】本発明は上述の可撓性継手を装着したマン
ホール構造にも関するものであり、前記可撓性継手と筒
体と接着、嵌合もしくはその双方により装着される。ま
た、可撓性継手は全ての接合部に装着されてもよく、必
要な部分、特に下層の筒体の接合にのみ使用してもよ
い。なお、全ての接合部に可撓性継手を装着する場合に
は、全てが同じ構造の可撓性継手を装着する必要はな
く、下層ほど縦ばね定数/剪断ばね定数の大きい可撓性
継手を使用することが望ましい。The present invention also relates to a manhole structure equipped with the above-described flexible joint, which is attached to the flexible joint and the cylinder by bonding, fitting, or both. Further, the flexible joint may be attached to all joints, or may be used only for necessary parts, particularly for joining a lower cylinder. When attaching flexible joints to all joints, it is not necessary to attach flexible joints all having the same structure, and a flexible joint having a larger vertical spring constant / shear spring constant in a lower layer is required. It is desirable to use.
【0018】[0018]
【発明の実施の形態】本発明の実施の形態について説明
する。 (1)形状並びに構造について 本発明のマンホール構造体は図1に示したように接合部
3に可撓性継手5が使用されている。この図においては
本発明の可撓性継手5を全ての接合部に使用した例を示
した。Embodiments of the present invention will be described. (1) Shape and Structure In the manhole structure of the present invention, a flexible joint 5 is used for the joint 3 as shown in FIG. This figure shows an example in which the flexible joint 5 of the present invention is used for all joints.
【0019】次に可撓性継手の構成について具体的に説
明する。図2には可撓性継手5を装着した接合部の断面
を拡大して示した。この可撓性継手は可撓性継手5はゴ
ム状弾性体のみを使用した例であり、上部に位置する前
記筒体1の下端面との第1接当面7と下部に位置する前
記筒体1の上端面との第2接当面9を備え、xの厚さの
剪断変形可能部分を有する挟着部11、及び前記筒体1
の上端部と下端部に嵌合する嵌合部13(凹部)、15
(凸部)を備えている。嵌合部13、15の形状は既成
の筒体の嵌合形状をそのまま利用したものであり、本発
明の可撓性継手5を使用するために筒体の形状を変更す
る必要はない。Next, the structure of the flexible joint will be specifically described. FIG. 2 is an enlarged cross-sectional view of a joint where the flexible joint 5 is mounted. This flexible joint is an example in which the flexible joint 5 uses only a rubber-like elastic body, and the first contact surface 7 with the lower end surface of the cylindrical body 1 located on the upper side and the cylindrical body located on the lower side. A holding portion 11 having a second contact surface 9 with the upper end surface of the holding member 1 and having a shear-deformable portion having a thickness of x;
Fitting portions 13 (concave portions), 15 fitted to the upper end and lower end of the
(Projections). The shapes of the fitting portions 13 and 15 use the fitting shape of the existing cylindrical body as it is, and there is no need to change the shape of the cylindrical body in order to use the flexible joint 5 of the present invention.
【0020】図3に示した可撓性継手5は図2の形状に
加えて鍔状部17が設けられたものであり、前記鍔状部
17は上下の筒体の端部の内面または外面の少なくとも
一面に接するように形成される。また、前記鍔状部17
はそれぞれの周全体にわたって形成されたものであって
も部分的に設けられたものであってもよい。The flexible joint 5 shown in FIG. 3 is provided with a flange 17 in addition to the shape shown in FIG. 2, and the flange 17 is provided on the inner surface or the outer surface of the end of the upper and lower cylinders. Is formed so as to contact at least one surface thereof. In addition, the collar 17
May be formed over the entire circumference or may be partially provided.
【0021】本発明の可撓性継手5の前記挟着部11
は、筒体1の端面に沿って周方向に高剛性材料を複合さ
せた構造を有するものが好ましく、長繊維、織布、不織
布、板状体の高剛性材料が使用できる。これらの高剛性
材料は周方向すべてに設けられていても、部分的に設け
られていても良い。全周に使用すると、コストが高くな
ったり、特に鋼材を使用すると可撓性継手5の重量が増
加し、取り扱いが困難となる場合もある。The clamping portion 11 of the flexible joint 5 of the present invention
It is preferable that the high-rigidity material has a structure in which a high-rigidity material is compounded in the circumferential direction along the end surface of the cylindrical body 1, and a high-rigidity material such as a long fiber, a woven fabric, a nonwoven fabric, or a plate-like material can be used. These high-rigidity materials may be provided in all circumferential directions, or may be provided partially. When used over the entire circumference, the cost may be high, and when a steel material is used, the weight of the flexible joint 5 may increase, and handling may be difficult.
【0022】図4には筒体1の内周面と外周面に接する
鍔状部17を有し、かつ挟着部11に繊維材料18を高
剛性材料として使用し、層状に形成した例の断面を示し
た。また、図5aには鋼板19を高剛性材料として使用
し、筒体1に形成されている凹凸に沿った断面形状に加
工して弾性材料と一体化された例を、図5bには鋼板1
9aが筒体端面から内周面へと沿う形状のものと、筒体
端面から外周面へと沿う形状の鋼板19bの2種が使用
された例を、それぞれ断面にて示した。鋼板は図5a、
図5bに示した2層以外にさらに1層以上を剪断変形を
阻害しない状況となるように設けてもよい。繊維材料1
8の層、鋼板19、19a、19bの層のいずれの存在
も挟着部11の剪断変形を許容しつつ、筒体端部との嵌
合を強化する作用や、縦剛性を高める作用、並びに筒体
1が水平方向の力によってずれて外れることを防止する
作用を有する。図4においては、繊維材料18の層は中
央部に設けられているが、これを図5の鋼板のような薄
い繊維層として間隔を置いて形成する構成としてもよ
く、一部が図5bの鋼板19a、19bのように鍔状部
17に延設されてもよい。鍔状部17において筒体端部
側面に沿うように構成された鋼板19は図6に示したよ
うに、筒体1のはずれが防止できる作用を奏すれば、周
上に部分的に設けられていてもよい。上述の、高剛性材
料を複合化し、縦剛性を高めた可撓性継手は、マンホー
ル構造体中でも特に縦荷重の大きい下層の接合部に使用
することが好ましい。FIG. 4 shows an example in which the tubular body 1 has a flange-shaped portion 17 in contact with the inner and outer peripheral surfaces thereof, and the sandwiching portion 11 is formed in a layer shape by using a fibrous material 18 as a highly rigid material. The cross section is shown. FIG. 5A shows an example in which the steel plate 19 is used as a highly rigid material and is processed into a cross-sectional shape along the irregularities formed in the cylindrical body 1 and integrated with the elastic material.
9A is a cross-sectional view showing an example in which two types of steel plates 19b having a shape extending from the end surface of the cylinder to the inner peripheral surface and a steel plate 19b extending from the end surface of the cylinder to the outer peripheral surface are used. The steel plate is shown in FIG.
In addition to the two layers shown in FIG. 5B, one or more layers may be provided so as not to hinder the shear deformation. Fiber material 1
8 and the steel plates 19, 19a and 19b allow the sandwiching portion 11 to be sheared while strengthening the fitting with the end of the cylindrical body, and the effect of increasing the longitudinal rigidity. It has the function of preventing the cylinder 1 from being displaced and dislodged by a horizontal force. In FIG. 4, the layer of the fiber material 18 is provided at the center, but it may be formed as a thin fiber layer such as the steel sheet of FIG. 5 at intervals, and a part of FIG. It may be extended to the flange 17 like steel plates 19a and 19b. As shown in FIG. 6, the steel plate 19 configured along the side surface of the end of the cylindrical body in the flange portion 17 is partially provided on the periphery if it has an action of preventing the cylindrical body 1 from coming off. May be. The above-described flexible joint obtained by compounding a high-rigidity material to increase the vertical rigidity is preferably used for a lower layer joint having a particularly large vertical load even in a manhole structure.
【0023】図7a、図7bには別の端部構造を有する
コンクリート製の筒体に適用された本発明の可撓性継手
5の例を示した。なお、図7aの高剛性材料である鋼板
19は、図6のy−y断面の構造を示したものである。FIGS. 7A and 7B show an example of the flexible joint 5 of the present invention applied to a concrete cylinder having another end structure. In addition, the steel plate 19 which is a high-rigidity material in FIG. 7A shows the structure of the yy section in FIG.
【0024】本発明の可撓性継手の第1接当面7と第2
接当面9には、それぞれ少なくとも1つの凸条20が備
えられていることが好ましく、その例は、図7bにおい
て示されている。この図においては、凸条20は点線で
記載されているが、実際に装着した場合には圧縮されて
筒体端面形状に沿う形状となる。この凸条20は、周方
向に連続して設けられていることが好ましく、可撓性が
大きく、コンクリート製等の筒体1の端面の粗さ(小さ
な凹凸)に応じて変形してシール効果を高める作用を有
するものである。この凸条20もゴム状弾性体にて形成
されていることが好ましい。The first joint surface 7 and the second joint surface 7 of the flexible joint of the present invention
The abutment surfaces 9 are preferably each provided with at least one ridge 20, examples of which are shown in FIG. 7b. In this figure, the ridges 20 are indicated by dotted lines, but when they are actually mounted, they are compressed to have a shape that follows the shape of the cylindrical body end surface. The ridges 20 are preferably provided continuously in the circumferential direction, have high flexibility, and are deformed in accordance with the roughness (small irregularities) of the end surface of the cylindrical body 1 made of concrete or the like to provide a sealing effect. Has the effect of increasing the It is preferable that the ridge 20 is also formed of a rubber-like elastic body.
【0025】別の実施形態として第2接当面を形成する
前記挟着部11の嵌合部13、15、鍔状部17の少な
くとも一部は高硬度ゴム材料により形成された構成を有
していてもよい。図8に図3に示したものと同じ形状の
可撓性継手5の一部を高硬度ゴム材料6とした例を示し
た。かかる構成も嵌合部15の強度を高めてより大きな
剪断歪みを許容するものである。なお、高硬度ゴム材料
6は大きな剪断歪みを許容する目的のためには、図8の
ように筒体端部の凹部に嵌合する嵌合部に使用すること
が特に好ましい。As another embodiment, at least a part of the fitting portions 13, 15 and the flange portion 17 of the holding portion 11 forming the second contact surface has a configuration formed of a high hardness rubber material. You may. FIG. 8 shows an example in which a part of the flexible joint 5 having the same shape as that shown in FIG. This configuration also increases the strength of the fitting portion 15 to allow a larger shear strain. It is particularly preferable to use the high hardness rubber material 6 in a fitting portion that fits into a concave portion at the end of the cylindrical body as shown in FIG. 8 for the purpose of allowing a large shear strain.
【0026】(別実施形態)上述の実施形態では、前記
挟着部11が横方向に高剛性材料が層状に設けられた例
を示したが、図9及び図10に示すように、挟着部11
が、その内部に高剛性材料よりなる補強用の棒状体Pを
縦姿勢で複数本配設したものであってもよい。(Alternative Embodiment) In the above-described embodiment, an example is shown in which the holding portion 11 is provided with a layer of high-rigidity material in the lateral direction. However, as shown in FIGS. Part 11
However, a plurality of reinforcing rods P made of a high-rigidity material may be provided in the inside thereof in a vertical posture.
【0027】かかる構成によると、棒状体Pが傾斜する
ことにより挟着部11を水平方向に剪断変形可能にしな
がらも、上方からの荷重に対して棒状体Pが補強材とし
て作用し、縦方向の圧縮変形を少なくすることができ
る。従って、図9及び図10に示すように、使用状態で
棒状体Pの両端部が上方の筒体1と接していることが望
ましいが、上方からの荷重が過大になったときにのみ補
強材として作用するように、使用状態で棒状体Pの両端
部が筒体1と接しないように構成してもよい。また、棒
状体Pを挟着部11に対して遊嵌状態としてもよく、そ
れにより、棒状体Pが傾斜する際の拘束力を小さくして
水平方向の剪断変形をより容易にすることができる。ま
た、棒状体Pが傾斜する際の拘束力をより確実に小さく
するために、棒状体Pの周囲に小空間を設けてもよい。According to such a configuration, the bar-shaped body P acts as a reinforcing material against a load from above, while the holding part 11 can be sheared and deformed in the horizontal direction due to the inclination of the bar-shaped body P. Can reduce compression deformation. Therefore, as shown in FIGS. 9 and 10, it is desirable that both ends of the rod-shaped body P are in contact with the upper cylindrical body 1 in a use state, but the reinforcing member is only used when the load from above becomes excessive. It may be configured such that both ends of the rod-shaped body P do not come into contact with the cylindrical body 1 in the use state so as to function as. Further, the rod-shaped body P may be in a loosely fitted state with respect to the holding portion 11, whereby the restraining force when the rod-shaped body P is inclined can be reduced, and the horizontal shear deformation can be more easily performed. . Further, a small space may be provided around the rod P in order to more reliably reduce the restraining force when the rod P is inclined.
【0028】更に、棒状体Pは下部の筒体1に剛接合さ
れてもよく、その場合、棒状体Pとしてバネ鋼等の弾性
体を用いることにより、挟着部11が水平方向の剪断変
形する際、曲がった棒状体Pの弾性復元力により、剪断
変形の復元力を向上させることが可能になる。但し、こ
の場合は、挟着部11の剪断変形をあまり規制しない程
度に、棒状体Pを細くする等するのが好ましい。Further, the rod-shaped body P may be rigidly connected to the lower cylindrical body 1. In this case, the elastic body such as spring steel is used as the rod-shaped body P, so that the holding portion 11 is subjected to horizontal shear deformation. At this time, the elastic restoring force of the bent rod-shaped body P can improve the restoring force of shear deformation. However, in this case, it is preferable to make the rod-shaped body P thinner or the like so that the shearing deformation of the sandwiching portion 11 is not so much restricted.
【0029】(2)材料、製法等について 本発明の可撓性継手はゴム状弾性体のみで構成されたも
のであってもよいが、ゴム状弾性体に対して高剛性材
料、高硬度ゴム材料より選ばれる少なくとも1種以上が
複合された構造を有することが好ましく、特に前述のよ
うに高剛性材料、高硬度ゴム材料を層状にしてゴム状弾
性体と積層された構造を有することが好ましい。(2) Material, manufacturing method, etc. The flexible joint of the present invention may be composed of only a rubber-like elastic body, but a high-rigidity material and a high-hardness rubber are used for the rubber-like elastic body. It is preferable to have a structure in which at least one or more materials selected from the materials are combined, and it is particularly preferable to have a structure in which a high-rigidity material and a high-hardness rubber material are layered and laminated with a rubber-like elastic body as described above. .
【0030】ここにいうゴム状弾性体とはJIS−A硬
度計にて測定した硬度が40〜90の材料であり、熱可
塑性エラストマー、熱硬化性エラストマーのいずれであ
ってもよいが、圧縮永久歪みが小さくあるべきであると
いう要請を考慮すると架橋した分子構造を有する熱硬化
性エラストマーが好ましい材料である。The rubbery elastic material mentioned here is a material having a hardness of 40 to 90 as measured by a JIS-A hardness meter, and may be either a thermoplastic elastomer or a thermosetting elastomer. Considering the requirement that the strain should be small, a thermosetting elastomer having a crosslinked molecular structure is a preferred material.
【0031】このような熱硬化性エラストマーとして
は、当業者に周知であるゴム材料の使用が好ましく、ポ
リクロロプレンゴム、ポリイソプレンゴム、EPDM、
ポリブタジエンゴム、NBR、SBRなどの合成ゴムや
天然ゴムより必要に応じて1種以上が選択して使用され
る。これらのゴム材料は、当業者に周知の方法で加工さ
れ、射出成形法、トランスファー成形法、圧縮成形法な
どにより最終形状に成形される。As such a thermosetting elastomer, it is preferable to use a rubber material known to those skilled in the art, such as polychloroprene rubber, polyisoprene rubber, EPDM,
One or more kinds are selected and used from a synthetic rubber such as polybutadiene rubber, NBR and SBR and a natural rubber as needed. These rubber materials are processed by a method known to those skilled in the art, and are formed into a final shape by an injection molding method, a transfer molding method, a compression molding method, or the like.
【0032】高硬度ゴム材料は、JIS−A硬度にて9
0以上のゴム材料であり、上述の熱硬化性エラストマー
に例示した合成ゴム、天然ゴムより選択される材料を使
用し、特に架橋密度を高くしたり充填材を多く配合する
ことにより高硬度材料とされる。高硬度ゴム材料とゴム
状弾性体とは、いわゆる加硫接着により一体化されるこ
とが好ましく、強固な接着を得るためには、ゴム状弾性
体と高硬度ゴム材料とは同じ原料ゴムを使用することが
特に好ましい態様である。The high hardness rubber material has a JIS-A hardness of 9
0 or more rubber material, using a material selected from the synthetic rubbers and natural rubbers exemplified as the above-described thermosetting elastomers, and in particular, by increasing the crosslink density or compounding a large amount of fillers, to obtain a high-hardness material. Is done. The high-hardness rubber material and the rubber-like elastic material are preferably integrated by so-called vulcanization bonding, and in order to obtain strong adhesion, the same raw rubber is used for the rubber-like elastic material and the high-hardness rubber material. Is a particularly preferred embodiment.
【0033】高剛性材料として例示される繊維材料とし
ては、具体的にナイロン、ポリエステル、ポリアラミ
ド、レーヨン等の有機繊維、ガラス繊維等の鉱物繊維、
スチールコード等の金属繊維、その他カーボン繊維等が
挙げられる。これらの繊維材料は織布、不織布、スライ
バー、トウシート、撚り合わせた繊維を整列させた形状
にて使用される。これらの繊維はそのままで、もしくは
ゴムとの接着性を向上させる、反応性試薬や樹脂材料を
用いた予備処理を行い、必要に応じて当業者の言うトッ
ピング処理を行い、その後ゴム状弾性体を形成する材料
などと一体に成形される。Specific examples of the fiber material exemplified as the high rigidity material include organic fibers such as nylon, polyester, polyaramid and rayon, mineral fibers such as glass fiber, and the like.
Examples thereof include metal fibers such as steel cords and other carbon fibers. These fiber materials are used in a form in which woven fabric, nonwoven fabric, sliver, tow sheet, and twisted fiber are arranged. These fibers are used as they are, or are subjected to a pretreatment using a reactive reagent or a resin material to improve the adhesiveness with rubber, and if necessary, are subjected to a topping treatment referred to by those skilled in the art. It is molded integrally with the material to be formed.
【0034】また、高剛性材料として例示される金属材
料としては、先に説明した鋼板のほかに、SUS、真
鍮、アルミニウムなどが例示でき、必要に応じて当業者
に周知の前処理、即ち、ブラスト処理、プライマー処
理、加硫接着用の接着剤処理を行って前述のゴム材料と
一体にして可撓性継手として成形される。Examples of the metal material exemplified as the high rigidity material include SUS, brass, aluminum and the like in addition to the steel plate described above. If necessary, a pretreatment well known to those skilled in the art, that is, A blast treatment, a primer treatment, and an adhesive treatment for vulcanization bonding are performed, and the resultant is integrated with the rubber material to be molded as a flexible joint.
【0035】高剛性材料として例示される樹脂材料とし
ては、ナイロン類、PET等のポリエステル樹脂類、A
BS、ノリル樹脂等いわゆるエンジニアリングプラスチ
ックが剛性が高く好ましい材料である。さらにスーパー
エンジニアリングプラスチックと称される樹脂材料も好
ましい。前述の高弾性率ゴム材料も好ましく、未加硫の
状態でシート状に成形し、これを未加硫状態のゴム状弾
性体と積層した後加硫することにより積層状態としても
よい。Examples of the resin material exemplified as the highly rigid material include nylons, polyester resins such as PET, and A
So-called engineering plastics such as BS and Noryl resin are preferable materials having high rigidity. Further, a resin material called super engineering plastic is also preferable. The above-described high elastic modulus rubber material is also preferable. The rubber material may be formed into a sheet shape in an unvulcanized state, laminated with an unvulcanized rubber-like elastic body, and then vulcanized to form a laminated state.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の可撓性継手を装着して積み重ねたマン
ホール構造体の断面構造を例示した図FIG. 1 is a diagram illustrating a cross-sectional structure of a manhole structure mounted with a flexible joint of the present invention mounted thereon.
【図2】ゴム状弾性体のみで構成された可撓性継手の断
面構造を例示した図FIG. 2 is a diagram illustrating a cross-sectional structure of a flexible joint composed of only a rubber-like elastic body;
【図3】ゴム状弾性体のみで構成され、鍔状部を備えた
可撓性継手の断面構造を例示した図FIG. 3 is a view exemplifying a cross-sectional structure of a flexible joint which is constituted only of a rubber-like elastic body and has a flange portion.
【図4】挟着部の中央に、筒体端面に沿うように配設さ
れた繊維材料の層を備えた可撓性継手の例の断面を示し
た図FIG. 4 is a diagram showing a cross section of an example of a flexible joint including a layer of a fiber material disposed along the end surface of a tubular body in the center of a holding portion.
【図5】鋼板を高剛性材料とし、挟着部に、上下の筒体
端面に沿うようにそれぞれ配設された可撓性継手の例の
断面を示した図FIG. 5 is a diagram showing a cross section of an example of a flexible joint in which a steel plate is made of a high-rigidity material, and which is disposed on a sandwiching portion along the upper and lower cylindrical body end surfaces.
【図6】高剛性材料として鋼板を使用し、これを断面円
形の筒体の周上に部分的に設けた例を示した図FIG. 6 is a diagram showing an example in which a steel plate is used as a high-rigidity material and the steel plate is partially provided on the circumference of a cylindrical body having a circular cross section.
【図7】嵌合がそれぞれ(a)平坦な端面、(b)段差
状の端部構造にて行われる筒体に装着した可撓性継手の
例を示した図。(a)においては、鋼板が設けられてい
る。FIG. 7 is a diagram showing an example of a flexible joint attached to a cylindrical body in which fitting is performed with (a) a flat end face and (b) a stepped end structure. In (a), a steel plate is provided.
【図8】図3の可撓性継手の一部に高弾性ゴム材料を使
用した可撓性継手の断面構造を例示した図FIG. 8 is a diagram illustrating a cross-sectional structure of a flexible joint using a highly elastic rubber material for a part of the flexible joint of FIG. 3;
【図9】垂直方向に棒状体を立設した可撓性継手を装着
した接合部の断面を例示した図FIG. 9 is a diagram exemplifying a cross section of a joint where a flexible joint having a vertically extending rod-like body is mounted.
【図10】垂直方向に棒状体を立設した可撓性継手の棒
状体の配設状況を例示した図FIG. 10 is a view exemplifying a disposition state of a rod-shaped body of a flexible joint in which the rod-shaped body is erected in a vertical direction.
【図11】コンクリート製の筒体を積み重ねて構成した
従来のマンホール構造体の断面構造を例示した図FIG. 11 illustrates a cross-sectional structure of a conventional manhole structure formed by stacking concrete cylinders.
1 筒体 5 可撓性継手 7 第1接当面 9 第2接当面 11 挟着部 13 嵌合部(凹部) 15 嵌合部(凸部) DESCRIPTION OF SYMBOLS 1 Cylindrical body 5 Flexible joint 7 1st contact surface 9 2nd contact surface 11 Nipping part 13 Fitting part (depression) 15 Fitting part (convex part)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 辰巳 法彦 東京都新宿区天神町10番地 安村ビル2階 東洋ゴム工販株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Norihiko Tatsumi 10th Tenjincho, Shinjuku-ku, Tokyo Yasumura Building 2F Toyo Tire & Rubber Co., Ltd.
Claims (3)
構造体において、前記筒体の接合部に装着される可撓性
継手であって、 上部の前記筒体の下端部との第1接当面と下部の前記筒
体の上端部との第2接当面を備え、装着状態にて水平方
向に剪断変形可能であり、縦ばね定数/剪断ばね定数比
が5以上であるマンホール構造体用可撓性継手。1. A manhole structure formed by stacking cylindrical bodies, a flexible joint attached to a joint of the cylindrical bodies, wherein a first contact surface with a lower end of the upper cylindrical body. And a second abutment surface between the lower end and the upper end of the cylindrical body, which can be sheared horizontally in the mounted state, and has a ratio of longitudinal spring constant / shear spring constant of 5 or more. Sex fittings.
当面に沿って配設された、金属材料、繊維材料、樹脂材
料から選択される1種以上の高剛性材料を少なくとも1
つ含むものである請求項1に記載のマンホール構造体用
可撓性継手。2. The holding portion includes at least one or more highly rigid materials selected from a metal material, a fiber material, and a resin material disposed along the first contact surface and the second contact surface. 1
The flexible joint for a manhole structure according to claim 1, wherein the flexible joint includes one.
体用可撓性継手を装着したマンホール構造体。3. A manhole structure to which the flexible joint for manhole structure according to claim 1 is attached.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9018567A JPH10212732A (en) | 1997-01-31 | 1997-01-31 | Flexible joint for manhole structure and manhole structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9018567A JPH10212732A (en) | 1997-01-31 | 1997-01-31 | Flexible joint for manhole structure and manhole structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10212732A true JPH10212732A (en) | 1998-08-11 |
Family
ID=11975213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9018567A Withdrawn JPH10212732A (en) | 1997-01-31 | 1997-01-31 | Flexible joint for manhole structure and manhole structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10212732A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002356865A (en) * | 2001-05-30 | 2002-12-13 | Hakko Co Ltd | Manhole construction method and its structure |
JP2003074748A (en) * | 2001-09-03 | 2003-03-12 | Sekisui Chem Co Ltd | Vertical pipe connection part structure |
-
1997
- 1997-01-31 JP JP9018567A patent/JPH10212732A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002356865A (en) * | 2001-05-30 | 2002-12-13 | Hakko Co Ltd | Manhole construction method and its structure |
JP2003074748A (en) * | 2001-09-03 | 2003-03-12 | Sekisui Chem Co Ltd | Vertical pipe connection part structure |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5373274B2 (en) | Anti-vibration structure | |
US7232160B2 (en) | Pipe clamp inner seal | |
US6196763B1 (en) | Connection system for hoses, expansion joints and actuators | |
JP4330771B2 (en) | Flexible joint, joint structure using the same, and construction method of submerged tunnel | |
JP4000224B2 (en) | Liquid leakage prevention structure and flexible joint used therefor | |
JPH10212732A (en) | Flexible joint for manhole structure and manhole structure | |
US6945567B2 (en) | Flexible pipe connecting unit | |
JP2007100348A (en) | Rubber water sealing plate for high pressure | |
JP4791756B2 (en) | Flexible joint | |
CN211259911U (en) | Petroleum pipeline sealing device | |
US4240653A (en) | Flexible expansion joint | |
JPH1150482A (en) | Manhole structural body flexible joint and manhole structural body | |
JPH111932A (en) | Manhole structure, and sliding joint therefor | |
JPH1122883A (en) | Deflective joint propelling pipe | |
JP2000346038A (en) | Elastic washer for structure | |
JP3392174B2 (en) | Gasket-integrated flange joint | |
JP3626541B2 (en) | Packing used for pipe joints | |
JP4160151B2 (en) | Expansion joint for underground burial | |
JPS5922390Y2 (en) | High pressure flexible hume pipe | |
JP4837472B2 (en) | Pipe joint structure | |
JP3622907B2 (en) | Flexible joint and joint structure using it | |
JP2001205707A (en) | Flanged fiber reinforced resin pipe | |
JP3062801B2 (en) | Flexible fume tube | |
JP2791758B2 (en) | Box culvert connection method and flexible connector used in the method | |
JP2597593B2 (en) | Flexible material for joints |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20040406 |