JPS6035507B2 - Shear reinforcement method for openings in reinforced concrete members - Google Patents
Shear reinforcement method for openings in reinforced concrete membersInfo
- Publication number
- JPS6035507B2 JPS6035507B2 JP11634378A JP11634378A JPS6035507B2 JP S6035507 B2 JPS6035507 B2 JP S6035507B2 JP 11634378 A JP11634378 A JP 11634378A JP 11634378 A JP11634378 A JP 11634378A JP S6035507 B2 JPS6035507 B2 JP S6035507B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforced concrete
- hole
- holes
- bolt
- concrete member
- 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
- 239000011150 reinforced concrete Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 9
- 230000002787 reinforcement Effects 0.000 title description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Description
【発明の詳細な説明】
本発明は建造物等の構造体の既に構築された鉄筋コンク
リート部材に設ける関口部のせん断補強方法に関するの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for shear reinforcing a gateway portion of a reinforced concrete member that has already been constructed in a structure such as a building.
一般に閉口部を有する部材が外力を受けると、関口部の
周辺では応力集中が起るものであり、例えば、円孔を持
つ弾性無限板が一様なせん断力を受ける場合には円孔緑
の斜張力は円孔から充分離れた位置の４倍に達するもの
である。Generally, when a member with a closed part is subjected to an external force, stress concentration occurs around the entrance part.For example, when an elastic infinite plate with a circular hole is subjected to a uniform shear force, the circular hole green The oblique tension reaches four times as much as at a position sufficiently far away from the circular hole.
このため、建造物の構造体において、鉄筋コンクリート
部材に設備配管用等の開口部である貫通孔を設ける場合
には、この貫通孔の位置を梁部材の場合にはせん断力の
特に小さいスパンの中央附近にするなどの配慮をすると
共に、コンクリートの打設前に予め鉄筋や鋼板等を用い
て開□部を形成する仮枠の周辺に斜張力に対する必要な
補強を施すのが普通である。しかしながら、鉄筋コンク
リート部材の構築後において、設備の変更等によって閉
口部の位置の変更、又は新たに関口部の必要が生じるこ
とがしばしばあるものである。本発明は、上記する既に
構築された鉄筋コンクリート部材に閉口部を設ける場合
に、この開口部のせん断補強を有効かつ容易確実に行う
ことが出来る方法を提供するものである。For this reason, in the structure of a building, when providing a through hole, which is an opening for equipment piping, etc., in a reinforced concrete member, the location of the through hole is at the center of the span where the shear force is particularly low in the case of a beam member. It is common practice to take necessary measures to ensure that the area is nearby, and to provide necessary reinforcement against diagonal tension around the temporary frame that forms the opening using reinforcing bars, steel plates, etc. before pouring concrete. However, after constructing a reinforced concrete member, it is often necessary to change the position of the closing part or to create a new entrance part due to changes in equipment or the like. The present invention provides a method that can effectively, easily and reliably perform shear reinforcement of an opening when a closing part is provided in the above-mentioned already constructed reinforced concrete member.
以下に本発明の鉄筋コンクリート部材に設ける開口部の
せん断補強方法を説明すると、本方法は第１図及び第２
図に例示するように、建造体の既に構築された鉄筋コン
クリート部材１の所要位置に、穿孔機によって下記する
補強鋼板３の中央孔４に合わせて貫通孔５を穿孔すると
共に該貫通孔６の周辺に補強鋼板３の周辺に設けたボル
ト孔６を合わせてボルト挿通孔７を穿孔し、ついで鉄筋
コンクリート部材１の両側に、上記補強鋼板３を、その
中央孔４とその周辺のボルト孔６を上記の貫通孔５とボ
ルト挿通孔７にそれぞれ合致させて当綾し、上記のボル
ト孔６とボルト挿通孔７を通じてＰＣ鋼榛８を挿通し、
このＰＣ鋼榛８を緊張定着して上記の補強鋼板３を鉄筋
コンクリート部材１の両側に締付け固着めしめることを
特徴とするものである。The shear reinforcement method for openings provided in reinforced concrete members according to the present invention will be explained below.
As illustrated in the figure, a through hole 5 is drilled at a predetermined position of the already constructed reinforced concrete member 1 of the building using a drilling machine in line with the center hole 4 of the reinforcing steel plate 3 as described below, and the periphery of the through hole 6 is drilled. Align the bolt holes 6 provided around the reinforcing steel plate 3 with the bolt holes 7, and then drill the bolt insertion holes 7 on both sides of the reinforced concrete member 1. The PC steel bar 8 is inserted through the bolt hole 6 and the bolt insertion hole 7, respectively.
This PC steel beam 8 is tension-fixed, and the above-mentioned reinforcing steel plates 3 are fastened and fixed to both sides of the reinforced concrete member 1.
なお図面において、２はコンクリート、９は鉄筋コンク
リート部村の主鉄筋を示している。又、第２図において
、１０は鉄筋コンクリート部材１の表面と補強鋼板３と
の間に施されたセメントペースト又はセメントモルタル
を示し、１ １はＰＣ鋼棒８の定着ナットを示している
。しかして、上記の鉄筋コンクリート部材１の貫通孔５
の穿孔において、貫通孔５の位置は当然せん断力のでき
るだけ４・さし、所に定められ、又、関口部はできるだ
け小さく定められるものである。本発明の方法は上記の
ように行われるもので、鉄筋コンクリート部材１におけ
る開□部において、穿孔された貫通孔５の洋側にＰＣ鋼
棒８によって締付けて一体に固着された補強鋼板３によ
って、貫通孔５により欠損されるコンクリート２の断面
積を補償されるので、該貫通孔５の部分の剛性を高め得
ると共にせん断力によって生ずる斜張力に対する所要抵
抗断面を充分保持できる。In the drawings, 2 indicates concrete and 9 indicates the main reinforcing bars of the reinforced concrete section. Further, in FIG. 2, 10 indicates cement paste or cement mortar applied between the surface of the reinforced concrete member 1 and the reinforcing steel plate 3, and 11 indicates a fixing nut for the PC steel rod 8. Therefore, the through hole 5 of the above-mentioned reinforced concrete member 1
In the drilling process, the position of the through hole 5 is naturally determined to be as far as possible from the shear force, and the entrance portion is determined to be as small as possible. The method of the present invention is carried out as described above, and in the opening □ of the reinforced concrete member 1, the reinforcing steel plate 3 is fixed integrally to the western side of the drilled through hole 5 by means of a PC steel rod 8. Since the cross-sectional area of the concrete 2 lost by the through-holes 5 is compensated for, the rigidity of the through-holes 5 can be increased, and the required cross-sectional area for resistance to diagonal tension caused by shearing force can be sufficiently maintained.
又補強鋼板３のＰＣ鋼棒による縦付け固着により、該補
強鋼板３と鉄筋コンクリート部材１の構造的の一体化が
確保されると共に貫通孔５の周辺部のコンクリートに圧
縮応力が付与されるので、この部のせん断力に対するコ
ンクリートの耐力を効果的に増強せしめ得るものである
。更に、本発明の方法は、予め補強鋼板３を作って置く
ことによって、容易迅速に施工できる利点を有する。Further, by vertically fixing the reinforcing steel plate 3 with the PC steel rod, the structural integration of the reinforcing steel plate 3 and the reinforced concrete member 1 is ensured, and compressive stress is applied to the concrete around the through hole 5. This can effectively increase the strength of the concrete against shear forces in this area. Furthermore, the method of the present invention has the advantage that the reinforcing steel plate 3 can be prepared in advance, so that construction can be carried out easily and quickly.
添付の図面は、本発明の方法の態様を実施例によって説
明するもので、第１図は、本発明を実施した開□部の正
面図、第２図は前図のＡ−Ａ線に沿う縦断面図である。
１・・・・・・鉄筋コンクリート部材、２…・・・コン
クリート、３・・・・・・補強鋼板、４・…・・中央孔
、５・・・・・・貫通孔、６・・・・・・ボルト孔、７
・・・・・・ボルト挿通孔、８…・・・ＰＣ鋼榛、９・
・…・主鉄筋、１０・・・・・・セメントペースト又は
セメントモルタル、１１……定着ナツト。第１図
第２図The accompanying drawings are for explaining aspects of the method of the present invention by way of examples, and FIG. 1 is a front view of an opening □ in which the present invention is implemented, and FIG. 2 is a view taken along line A-A in the previous figure. FIG. 1...Reinforced concrete member, 2...Concrete, 3...Reinforced steel plate, 4...Center hole, 5...Through hole, 6... ...Bolt hole, 7
...Bolt insertion hole, 8...PC steel bar, 9.
...Main reinforcing bar, 10...Cement paste or cement mortar, 11...Fixing nut. Figure 1 Figure 2
Claims (1)
要位置に、穿孔機によつて下記する補強鋼板の中央孔に
合わせて貫通孔を穿孔すると共に該貫通孔の周辺に補強
鋼板の周辺に設けたボルト孔に合わせてボルト貫通孔を
穿孔し、ついで鉄筋コンクリート部材の両側に、上記補
強鋼板を、その中央孔とその周辺のボルト孔を上記の貫
通孔とボルト貫通孔にそれぞれ合致させて当接し、上記
のボルト孔とボルト貫通孔を通じてＰＣ鋼棒を挿通し、
このＰＣ鋼棒を緊張定着して上記の補強鋼板を鉄筋コン
クリート部材の両側に締付け固着めしめることを特徴と
する鉄筋コンクリート部材の開口部に設けるせん断補強
方法。1. Use a drilling machine to drill through holes in the required positions of the already constructed reinforced concrete members of the structure in line with the center hole of the reinforcing steel plate as described below, and install bolts around the reinforcing steel plate around the through hole. Bolt through holes are drilled to match the holes, and then the reinforcing steel plates are brought into contact with both sides of the reinforced concrete member, with the center hole and the bolt holes around it aligned with the through holes and the bolt through holes, respectively. Insert the PC steel rod through the bolt hole and bolt through hole,
A shear reinforcing method for providing an opening in a reinforced concrete member, which comprises tightening and securing the reinforcing steel plates to both sides of the reinforced concrete member by tension-fixing the PC steel rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11634378A JPS6035507B2 (en) | 1978-09-21 | 1978-09-21 | Shear reinforcement method for openings in reinforced concrete members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11634378A JPS6035507B2 (en) | 1978-09-21 | 1978-09-21 | Shear reinforcement method for openings in reinforced concrete members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5542965A JPS5542965A (en) | 1980-03-26 |
| JPS6035507B2 true JPS6035507B2 (en) | 1985-08-15 |
Family
ID=14684591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11634378A Expired JPS6035507B2 (en) | 1978-09-21 | 1978-09-21 | Shear reinforcement method for openings in reinforced concrete members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6035507B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63112310U (en) * | 1987-01-16 | 1988-07-19 | ||
| JP2008261219A (en) * | 2008-06-27 | 2008-10-30 | Ohbayashi Corp | Member reinforcing structure and reinforcing method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4391798A (en) * | 1982-03-15 | 1983-07-05 | Colgate-Palmolive Company | Non-irritating dentifrice |
| JP4547875B2 (en) * | 2003-07-16 | 2010-09-22 | 株式会社大林組 | Concrete reinforcing structure and reinforcing method |
| JP6087077B2 (en) * | 2012-07-10 | 2017-03-01 | 大成建設株式会社 | Reinforced structure of concrete members |
| JP6210673B2 (en) * | 2012-11-06 | 2017-10-11 | 株式会社竹中工務店 | Reinforced structure of perforated beams |
-
1978
- 1978-09-21 JP JP11634378A patent/JPS6035507B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63112310U (en) * | 1987-01-16 | 1988-07-19 | ||
| JP2008261219A (en) * | 2008-06-27 | 2008-10-30 | Ohbayashi Corp | Member reinforcing structure and reinforcing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5542965A (en) | 1980-03-26 |
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