JPS6242093B2 - - Google Patents
Info
- Publication number
- JPS6242093B2 JPS6242093B2 JP58092491A JP9249183A JPS6242093B2 JP S6242093 B2 JPS6242093 B2 JP S6242093B2 JP 58092491 A JP58092491 A JP 58092491A JP 9249183 A JP9249183 A JP 9249183A JP S6242093 B2 JPS6242093 B2 JP S6242093B2
- Authority
- JP
- Japan
- Prior art keywords
- insert member
- concrete
- insert
- manhole
- outer frame
- 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
Links
- 238000000034 method Methods 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000005056 compaction Methods 0.000 claims description 2
- 238000007790 scraping Methods 0.000 claims 1
- 238000009415 formwork Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
- E06C9/04—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted in the form of climbing irons or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Ladders (AREA)
Description
【発明の詳細な説明】
本発明はマンホールの人孔側壁塊にステツプを
取り付ける場合、該ステツプを取り付けるための
インサートの埋設固定方法に係り、上記インサー
トを安全、確実、強固に埋設固定することと、作
業性を向上させることを目的としたマンホールの
ステツプ取付用インサートの埋設固定方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of burying and fixing an insert for attaching a step to a manhole side wall mass of a manhole, and a method for embedding and fixing the insert safely, reliably, and firmly. This invention relates to a method for embedding and fixing an insert for installing a step in a manhole with the aim of improving workability.
一般にこの種のマンホール内壁には、作業員の
出入に供するステツプが固着されているが、従来
のステツプは、マンホールの成形時に一体的に埋
設して取り付ける方法と、成形後にマンホールの
壁に貫通された孔にステツプを後から取り付ける
方法との２方法が知られている。 Generally, a step is fixed to the inner wall of this type of manhole to allow workers to enter and exit, but conventional steps have two methods: one is to embed the step integrally when the manhole is formed, and the other is to pierce the manhole wall after forming. Two methods are known: one is to install the step later in the hole.
まず前者の方法は安全性において何ら問題は無
いが、ステツプを取り付ける部分の型枠が細かく
なり、組み立て作業に多大の時間を要し、コンク
リートを締め固めする際に振動を与えるので型枠
の接合部がズレ込み易くなり成形された製品のハ
ダ（肌）にはトロモレ、型枠の接合部のズレ跡
（目違い）が生じ、外観の体栽が悪くなる。 First of all, the former method does not pose any safety problems, but the formwork where the steps are attached is fine, it takes a lot of time to assemble, and it causes vibration when compacting the concrete, so the formwork cannot be connected properly. The molded parts tend to become misaligned, and the skin of the molded product will show tromole and marks of misalignment at the joints of the formwork, resulting in an unsightly appearance.
又後者は前者の外観と作業性を解決する為に考
えられた方法であるが、この方法はマンホールの
壁にステツプの脚部径より略大径の貫通孔を穿設
し、その貫通孔にステツプの脚部を直接挿入した
後マンホールの外側から、ボルト・ナツトを締め
付け、この締め付け部の周囲にモルタル等の充填
材を挿入するものである。 The latter is a method devised to solve the appearance and workability of the former, but this method involves drilling a through hole in the manhole wall with a diameter that is approximately larger than the diameter of the step leg, and After directly inserting the leg of the step, bolts and nuts are tightened from the outside of the manhole, and a filling material such as mortar is inserted around the tightened portion.
この方法は貫通孔の径がステツプの脚部径より
大であるため、ステツプ全体がぐらついて安全保
持の点で不充分であり、外側の充填材にはヒビが
発生し易く、マンホールの内外より漏水事故が起
き、これに起因して有害な酸性化が誘引され、こ
のためステツプが腐食して抜け出るという危険性
があつた。 In this method, the diameter of the through hole is larger than the diameter of the leg of the step, so the entire step becomes unstable and is insufficient in terms of safety.The outer filling material is prone to cracking, and the inside and outside of the manhole is prone to cracks. Water leaks occurred, which induced harmful acidification, which posed the risk of the steps corroding and breaking out.
この様に従来の方法は、安全性、確実性、強固
性及び作業性において種々の欠点が存在してい
た。 As described above, the conventional methods have various drawbacks in terms of safety, reliability, robustness, and workability.
本発明の目的は、上述した従来方法の欠点を解
消したもので、特に型枠として外枠のみを使用す
るロール転圧又は遠心力成形によるコンクリート
成形の際に役立つマンホールのステツプ取付用イ
ンサートの埋設固定方法を提供することにある。 The object of the present invention is to solve the above-mentioned drawbacks of the conventional methods, and to provide a method for burying inserts for installing steps in manholes, which is particularly useful when forming concrete by roll compaction or centrifugal force forming using only the outer frame as the formwork. The purpose is to provide a fixing method.
つぎに本発明の実施例を図面について説明する
と、まずマンホール１６ａ，１６ｂ形成用型枠と
して外枠１を形成し、この外枠１の所定位置には
小孔２を穿設しておき、補強部材３の略センター
には中央孔４を貫通状に形成しておく。ここで最
初の基礎工程により、外枠１の小孔２と補強部材
３の中央孔４とを連通状態となるよう位置決めし
て補強部材３を外枠１の表面１ａに熔接等の手段
で固着する。第４図以下の実施例では、補強部材
３を一個だけ図示しているが、ステツプ１９には
二本の脚部２０が存在するから、これに対応する
数のインサート部材８が当然のことながら必要と
なる訳で、このことより補強部材３も一対のもの
が必要となるが図面では便宜上その片方のみを示
したにすぎない。また一対のインサート部材８，
８はフラツトバー１２で相互に連結しておけば、
コンクリート形成時にインサート部材がより安定
保持される。 Next, an embodiment of the present invention will be explained with reference to the drawings. First, an outer frame 1 is formed as a formwork for forming manholes 16a and 16b, and small holes 2 are bored at predetermined positions in this outer frame 1. A central hole 4 is formed approximately at the center of the member 3 in a penetrating shape. Here, in the first basic step, the small hole 2 of the outer frame 1 and the center hole 4 of the reinforcing member 3 are positioned so as to be in communication with each other, and the reinforcing member 3 is fixed to the surface 1a of the outer frame 1 by means such as welding. do. Although only one reinforcing member 3 is shown in the embodiments shown in FIG. Therefore, a pair of reinforcing members 3 is also required, but only one of them is shown in the drawing for convenience. In addition, a pair of insert members 8,
8 are interconnected with flat bars 12,
The insert member is held more stably during concrete formation.
ついで差し込み工程により、補強部材３の中央
孔４の内周壁に形成した雌ネジ部５に差し込み部
材６の雄ネジ部７を螺合して前記中央孔４及び小
孔２を経由して差し込み部材６の先端部６ａを外
枠内側に位置せしめる。この差し込み部材６にお
ける補強部材３の手前側に突出する部分には、ス
パナ等で差し込み部材６を回動させる際に便利な
ようにナツト等を取り付けておくとよい。また補
強部材３と差し込み部材６間にはワツシヤー１３
を介挿する。 Next, in the insertion process, the male threaded part 7 of the insertion member 6 is screwed into the female threaded part 5 formed on the inner peripheral wall of the central hole 4 of the reinforcing member 3, and the insertion member is inserted through the central hole 4 and the small hole 2. The tip end 6a of 6 is positioned inside the outer frame. A nut or the like may be attached to a portion of the insert member 6 that protrudes toward the front side of the reinforcing member 3 so as to conveniently rotate the insert member 6 with a spanner or the like. Also, a washer 13 is installed between the reinforcing member 3 and the insert member 6.
Interpose.
つぎに上記差し込み工程で外枠内側に位置せし
められた差し込み部材６の先端部６ａには係合ネ
ジ部１４（雄ネジでも雌ネジでも良く、図では雌
ネジを例示している）が形成されているので、仮
り止め工程により筒状をなすインサート部材８を
前記差し込み部材６の先端部６ａより挿入し、こ
の状態で先端部６ａの係合ネジ部１４に栓部材９
の係合ネジ部１５を螺合してインサート部材８の
先端開口部８ａにコンクリートが侵入しないよう
栓部材９にて閉塞し、インサート部材８を外枠内
側の所定位置に安定保持せしめる。なお上記栓部
材の先端表面はアール形状にすることが好まし
く、その場合にはロールによる転圧力が栓部材に
かかつた際その圧力を分散しうるので、栓部材や
インサート部材に破損事故が起らない効果があ
る。 Next, an engagement threaded portion 14 (male thread or female thread may be used, and a female thread is illustrated in the figure) is formed on the tip 6a of the insertion member 6 positioned inside the outer frame in the above insertion process. Therefore, the cylindrical insert member 8 is inserted from the tip 6a of the insertion member 6 in the temporary fixing step, and in this state, the plug member 9 is inserted into the engagement threaded portion 14 of the tip 6a.
The engaging screw portion 15 is screwed together and the tip opening 8a of the insert member 8 is closed with a plug member 9 to prevent concrete from entering, thereby stably holding the insert member 8 at a predetermined position inside the outer frame. It is preferable that the tip surface of the plug member is rounded. In this case, when rolling force from the roll is applied to the plug member, the pressure can be dispersed, thereby preventing damage to the plug member or insert member. It has a negative effect.
この状態で外枠内にコンクリートを充填した
後、コンクリートが完全固化しないうちに差し込
み部材６と栓部材９及び補強部材３との螺合状態
を解除し、この状態で差し込み部材６又は別個の
ノツクピン１０を用いて栓部材９をインサート部
材の内側より叩打してマンホール１６ａ，１６ｂ
内部と栓部材９間のコンクリートに位置特定のた
めのマークとなるヒビ割れ１１を形成して叩打工
程を完了する。ここでノツクピン１０により叩打
する場合には、第５図に示すように差し込み部材
６の中央に貫通孔１７を形成しておくと都合が良
い。 After filling the outer frame with concrete in this state, the screwing state between the insert member 6, the plug member 9, and the reinforcing member 3 is released before the concrete completely solidifies, and in this state, the insert member 6 or a separate knock pin is removed. 10, tap the plug member 9 from the inside of the insert member to open the manholes 16a, 16b.
A crack 11 is formed in the concrete between the inside and the plug member 9 to serve as a mark for specifying the position, and the pounding process is completed. When tapping with the dowel pin 10, it is convenient to form a through hole 17 in the center of the insert member 6 as shown in FIG.
ついで抜去工程により前記ヒビ割れ部分のコン
クリートを適当な治具を用いて掻爬して栓部材９
の先端を覗かせ、この栓部材の先端に適宜設けた
カギ部１８を利用する等して栓部材をマンホール
１６ａ，１６ｂの内部方向に引き抜き、脱型工程
によりマンホールから外枠１を取り外すものであ
る。 Then, in a removal step, the concrete in the cracked portion is curetted using an appropriate jig, and the plug member 9 is removed.
The outer frame 1 is removed from the manhole through a demolding process by letting the tip of the plug member peek out and pulling the plug member toward the inside of the manholes 16a, 16b using a key part 18 appropriately provided at the end of the plug member. be.
本発明は上記の方法によりインサート部材をコ
ンクリート内に埋設固定するので、ステツプ１９
の脚部２０をモルタル、またはミルク性セメント
等からなる充填材２２と共にインサート部材８内
に挿入させると、インサート部材内に予め設けて
ある抜け止め板２１が脚部２０の凹欠段部と係合
して一度挿入したステツプがインサート部材より
抜出することがなく、さらにインサート部材内に
隙き間なく詰められた充填材２２は一部がインサ
ート部材からオーバーフローするので、その外観
よよりインサート部材内の充填材の状況が確認で
き、ステツプ１９の脚部２０とインサート部材８
との完壁な固定が可能となる。ステツプの脚部を
インサート部材内に挿入した後は、脚部とインサ
ート部材間の入口部隙間に必要に応じてコーキン
グ材２３を充填して両者の結合を一層強固にす
る。 Since the present invention embeds and fixes the insert member in concrete by the above method, Step 19
When the leg part 20 of the holder is inserted into the insert member 8 together with the filler 22 made of mortar or milk-based cement, the retaining plate 21 provided in advance in the insert member engages with the recessed notch part of the leg part 20. In addition, once inserted, the step does not come out from the insert member, and furthermore, part of the filler 22 packed tightly into the insert member overflows from the insert member, so that the appearance of the step is better than that of the insert member. The condition of the filler inside can be confirmed, and the legs 20 of step 19 and the insert member 8 can be checked.
Perfect fixation is possible. After the leg of the step is inserted into the insert member, the entrance gap between the leg and the insert member is filled with caulking material 23 as necessary to further strengthen the connection between the two.
さらに差し込み部材６には必要に応じて貫通孔
１７が形成されるが、これはノツクピン１０の挿
通に利用することのほか抜去工程の際、インサー
ト部材内の圧力が低下して差し込み部材の引き抜
きが困難になるのを防止するために設けられるも
のであり、また差し込み部材６を引き抜き容易に
するためテーパー付きのものにすることも考えら
れる。 Furthermore, a through hole 17 is formed in the insert member 6 as necessary, but this hole is used not only for inserting the dowel pin 10 but also for reducing the pressure inside the insert member during the removal process and preventing the insert member from being pulled out. This is provided to prevent this from becoming difficult, and it is also conceivable that the insert member 6 be tapered to make it easier to pull out.
以上詳細に説明たように、本発明によるマンホ
ールのステツプ取付用インサートの埋設固定方法
は、インサート部材をマンホールの人孔側壁塊内
の所定位置に安全・確実・強固に埋設することが
でき、その作業性も著しく良好であり、このイン
サート部材に挿入されるステツプは極めて安定し
た状態で保持固定されるため、作業員の転落事故
を防止することができる等のすぐれた効果を具有
する。 As explained in detail above, the method of burying and fixing an insert for installing a step in a manhole according to the present invention allows the insert member to be safely, reliably, and firmly buried in a predetermined position within the manhole side wall mass of the manhole. Workability is also very good, and the step inserted into this insert member is held and fixed in an extremely stable state, so it has excellent effects such as being able to prevent workers from falling accidents.
第１図は本発明によりステツプを取り付けたマ
ンホールの縦断面図、第２図はステツプの平面
図、第３図Ａはインサート部材の正面図、Ｂは同
縦断面図、第４図はインサート部材内にステツプ
の脚部を挿入した状態の説明図、第５図はインサ
ート部材とワツシヤーと差し込み部材及び栓部材
との分解斜視図、第６図はノツクピンの斜視図、
第７図は補強部材の斜視図、第８図は本発明の抜
去工程直前の状態の横断面図である。
１……外枠、１ａ……表面、２……小孔、３…
…補強部材、４……中央孔、５……雌ネジ部、６
……差し込み部材、６ａ……先端部、７……雄ネ
ジ部、８……インサート部材、８ａ……先端開口
部、９……栓部材、１０……ノツクピン、１１…
…ヒビ割れ、１６ａ，１６ｂ……マンホール。
Fig. 1 is a longitudinal sectional view of a manhole equipped with a step according to the present invention, Fig. 2 is a plan view of the step, Fig. 3 A is a front view of the insert member, B is a longitudinal sectional view thereof, and Fig. 4 is the insert member. FIG. 5 is an exploded perspective view of the insert member, washer, insertion member, and plug member; FIG. 6 is a perspective view of the dowel pin;
FIG. 7 is a perspective view of the reinforcing member, and FIG. 8 is a cross-sectional view of the reinforcing member immediately before the removal step of the present invention. 1...Outer frame, 1a...Surface, 2...Small hole, 3...
...Reinforcement member, 4...Central hole, 5...Female screw part, 6
...Insert member, 6a...Tip part, 7...Male thread part, 8...Insert member, 8a...Tip opening, 9...Plug member, 10...Knock pin, 11...
...Cracks, 16a, 16b...manholes.
Claims (1)
トを充填し、該コンクリート充填時にステツプの
脚部を係止するためのインサートをコンクリート
内に埋設する埋設固定方法において、 外枠の所定位置に穿設した小孔と補強部材の中
央孔とが連通状態となるよう位置決めして該補強
部材を外枠の表面に固着する基礎工程と、 前記補強部材の中央孔の内周壁に形成した雌ネ
ジ部に差し込み部材の雄ネジ部を螺合することに
より、前記中央孔及び小孔を経由して差し込み部
材の先端部を外枠内側に位置せしめる差し込み工
程と、 筒状をなすインサート部材を前記差し込み部材
の先端部より挿入し、該先端部に栓部材を螺合す
ることによりインサート部材の先端開口部を閉塞
してインサート部材を外枠内側の所定位置に安定
保持せしめる仮り止め工程と、 外枠内側にコンクリートを充填した後、このコ
ンクリートが完全固化しないうちに前記差し込み
部材と栓部材及び補強部材との螺合状態を解除
し、この状態で差し込み部材又は別個のノツクピ
ンを用いて栓部材をインサート部材の内側より叩
打してマンホール内部と栓部材間のコンクリート
にヒビ割れを形成する叩打工程と、 前記ヒビ割れ部分のコンクリートを掻爬して栓
部材を覗かせるとともに、該栓部材をマンホール
内部方向に引き抜く抜去工程と、 完成したマンホールより外枠を取り外す脱型工
程とよりなるマンホールのステツプ取付用インサ
ートの埋設固定方法。[Scope of Claims] 1. An embedding fixing method in which concrete is filled by roll compaction or centrifugal force forming, and inserts for locking the legs of the step are buried in the concrete during the filling of the concrete, comprising: a basic step of fixing the reinforcing member to the surface of the outer frame by positioning the small hole drilled at the position so that the central hole of the reinforcing member communicates with the central hole of the reinforcing member; An insertion step of positioning the tip of the insert member inside the outer frame via the central hole and the small hole by screwing the male threaded portion of the insert member into the female threaded portion, and inserting the cylindrical insert member. a temporarily fixing step of inserting the insert member from the tip thereof and screwing a plug member to the tip to close the tip opening of the insert member to stably hold the insert member at a predetermined position inside the outer frame; After filling the inside of the outer frame with concrete, the screwing state between the insert member, the plug member, and the reinforcing member is released before the concrete completely hardens, and in this state, the plug member is removed using the insert member or a separate dowel pin. a hammering step of forming a crack in the concrete between the inside of the manhole and the plug member by hitting it from the inside of the insert member, and scraping the concrete in the cracked part to expose the plug member, and inserting the plug member inside the manhole. A method for burying and fixing an insert for installing a step in a manhole, which comprises a removal process of pulling it out in the direction of the manhole, and a demolding process of removing the outer frame from the completed manhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58092491A JPS59220532A (en) | 1983-05-27 | 1983-05-27 | Inlaying fixation of insert for fitting step of manhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58092491A JPS59220532A (en) | 1983-05-27 | 1983-05-27 | Inlaying fixation of insert for fitting step of manhole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59220532A JPS59220532A (en) | 1984-12-12 |
| JPS6242093B2 true JPS6242093B2 (en) | 1987-09-07 |
Family
ID=14055763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58092491A Granted JPS59220532A (en) | 1983-05-27 | 1983-05-27 | Inlaying fixation of insert for fitting step of manhole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59220532A (en) |
-
1983
- 1983-05-27 JP JP58092491A patent/JPS59220532A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59220532A (en) | 1984-12-12 |
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