JPH08134842A - Floor-slab reinforcing structure - Google Patents
Floor-slab reinforcing structureInfo
- Publication number
- JPH08134842A JPH08134842A JP27796894A JP27796894A JPH08134842A JP H08134842 A JPH08134842 A JP H08134842A JP 27796894 A JP27796894 A JP 27796894A JP 27796894 A JP27796894 A JP 27796894A JP H08134842 A JPH08134842 A JP H08134842A
- Authority
- JP
- Japan
- Prior art keywords
- floor slab
- concrete floor
- reinforced concrete
- reinforcing plate
- reinforcing
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、床版補強構造、更に詳
しくは、鉄筋コンクリート床版の補強構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor slab reinforcement structure, and more particularly to a reinforced concrete floor slab reinforcement structure.
【０００２】[0002]
【従来の技術】従来、鉄筋コンクリート床版下面の主桁
により直接支持されるハンチ部を除く平坦部分に鋼板を
当接し、該鋼板を主桁間にブラケットを介して連結した
補強横桁で支持し、前記ブラケット上面と補強横桁両端
部上面に前記ハンチ部に対して間隙を形成する切欠部を
設けたことを特徴とする鉄筋コンクリート床版の補強構
造が提案されている（特開平６−１０１２１２号公報、
参照）。2. Description of the Related Art Conventionally, a steel plate is brought into contact with a flat portion of the bottom surface of a reinforced concrete floor slab except a haunch portion directly supported by the main girder, and the steel plate is supported by a reinforcing cross girder connected to the main girder via a bracket. A reinforcing structure for a reinforced concrete floor slab has been proposed, which is characterized in that notches that form a gap with respect to the haunch are provided on the upper surface of the bracket and the upper surfaces of both ends of the reinforcing cross beam (Japanese Patent Laid-Open No. 6-101212). Bulletin,
reference).
【０００３】[0003]
【発明が解決しようとする課題】ところが、この鉄筋コ
ンクリート床版の補強構造は、鉄筋コンクリート床版下
面の平坦部分に当接させた鋼板を、主桁間にブラケット
を介して連結した補強横桁で支持する構造であるから、
鉄筋コンクリート床版の左右両側に張り出している張出
し部の補強には適用できない。However, this reinforcing structure for a reinforced concrete floor slab is supported by a reinforcing cross girder in which a steel plate abutted against the flat portion of the lower surface of the reinforced concrete floor slab is connected via a bracket between main girders. Because it has a structure that
It cannot be applied to the reinforcement of the overhangs that extend to the left and right of the reinforced concrete floor slab.
【０００４】また、この従来の鉄筋コンクリート床版の
補強構造は、工場で鋼板に補強横桁を溶接固定すると共
に、更に、橋軸方向に配した補強リブを補強横桁と鋼板
に溶接固定するため、溶接個所が非常に多い。また、こ
の工場で製作したパネルを取り付けるために現場でブラ
ケットを主桁に溶接しなければならず、現場での溶接作
業が多くなり、工事が長期化する恐れがある。In addition, in this conventional reinforced concrete floor slab reinforcement structure, the reinforcement girders are welded and fixed to the steel plate at the factory, and further the reinforcement ribs arranged in the bridge axis direction are welded and fixed to the reinforcement cross girder and the steel plate. , There are many welding points. In addition, the bracket must be welded to the main girder on the site to attach the panel manufactured in this factory, and the welding work on the site increases, which may result in a long construction.
【０００５】本発明は、係る従来の問題を解消するため
になされたものであり、その目的とするところは、構造
が簡単であるにもかかわらず、鉄筋コンクリート床版下
面の平坦部分の補強ばかりでなく、鉄筋コンクリート床
版の左右両端に張り出している張出し部の補強にも適用
可能であり、更に、現場での溶接作業を不要とし、工期
の短縮などを計ることができる床版補強構造を提供する
ことにある。The present invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to reinforce only the flat portion of the lower surface of the reinforced concrete floor slab, although the structure is simple. It can also be applied to the reinforcement of the overhanging parts that extend to the left and right ends of the reinforced concrete floor slab, and also provides a floor slab reinforcement structure that does not require on-site welding work and can shorten the construction period. Especially.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明の床版
補強構造は、主桁によって支持された鉄筋コンクリート
床版の下面に、鋼板と鋼板の下面に一定間隔で固定した
複数の横桁とからなる補強版を当接すると共に、該補強
版を、該補強版と前記主桁間に斜交いに配設した多数の
斜材で支持することを特徴とするものである。That is, the floor slab reinforcement structure of the present invention comprises a steel plate and a plurality of horizontal girders fixed to the lower surface of the steel plate at regular intervals on the lower surface of the reinforced concrete floor slab supported by the main girder. The reinforcing plate is abutted, and the reinforcing plate is supported by a large number of diagonal members obliquely arranged between the reinforcing plate and the main girder.
【０００７】[0007]
【作用】このように、主桁によって支持された鉄筋コン
クリート床版の下面に、鋼板と鋼板の下面に一定間隔で
固定した複数の横桁とからなる補強版を当接すると共
に、該補強版を、該補強版と前記主桁間に斜交いに配設
した多数の斜材で支持することにより、鉄筋コンクリー
ト床版下面の平坦部分を補強できるばかりでなく、鉄筋
コンクリート床版の左右両側に張り出している張出し部
の補強も可能である。また、補強版と主桁間に斜めに取
り付けた斜材は、ハイテンションボルトによって固定さ
れるので、現場での溶接作業が不要となり、工期の短縮
を計ることができる。In this way, a reinforcing plate composed of a steel plate and a plurality of cross girders fixed at regular intervals to the lower surface of the steel plate is brought into contact with the lower surface of the reinforced concrete floor slab supported by the main girder, and the reinforcing plate is By supporting with a large number of diagonal members diagonally arranged between the reinforcing plate and the main girder, not only the flat portion of the lower surface of the reinforced concrete floor slab can be reinforced, but also the right and left sides of the reinforced concrete floor slab are projected. Reinforcement of the overhanging part is also possible. Moreover, since the diagonal member obliquely attached between the reinforcing plate and the main girder is fixed by the high tension bolt, the welding work on site is not necessary, and the construction period can be shortened.
【０００８】[0008]
【実施例】以下、図面を参照しながら本発明の一実施例
を説明する。図１において、１は鉄筋コンクリート床版
であり、鉄筋コンクリート床版１は、橋軸方向に延びる
複数（図示の場合、２本）のＩ形断面の主桁２によって
支持されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a reinforced concrete floor slab, and the reinforced concrete floor slab 1 is supported by a plurality of (two in the illustrated case) I-shaped main girders 2 extending in the bridge axis direction.
【０００９】そして、隣接する２本の主桁２，２の間に
位置する床版１の下面３に補強版２０を当接させると共
に、補強版２０を、補強版２０と隣接する２本の主桁２
間にハ字状に配設させた２本の斜材３１で支持するよう
になっている。図２及び図３に示すように、補強版２０
は、鉄筋コンクリート床版１の下面３に当接する長方形
の鋼板２１と、鋼板２１の下面に一定間隔で溶接固定さ
せた逆Ｔ形断面の複数（図示の場合、３本）の横桁２２
と、横桁２２間に溶接固定させた複数（図示の場合、合
計４本）の縦材２３と、縦材２３と横桁のフランジ２４
間に溶接固定させた複数（図示の場合、合計８枚）の長
方形の補強板２５と、補強版２０の前後両端部に位置す
る横桁２２のフランジ２４と鋼板２１間に溶接固定させ
た台形状の複数（図示の場合、合計４枚）の補強板２６
とから構成されている。Then, the reinforcing plate 20 is brought into contact with the lower surface 3 of the floor slab 1 located between the two adjacent main girders 2 and 2, and the reinforcing plate 20 is provided between the two adjacent main girders 2. Main girder 2
It is configured to be supported by two diagonal members 31 arranged in a V shape between them. As shown in FIGS. 2 and 3, the reinforcing plate 20
Is a rectangular steel plate 21 that abuts the lower surface 3 of the reinforced concrete floor slab 1, and a plurality of (three in the case shown) transverse girders 22 of an inverted T-shaped section welded and fixed to the lower surface of the steel plate 21 at regular intervals.
And a plurality of vertical members 23 (a total of four in the case shown) welded between the cross beams 22, and the vertical members 23 and the flanges 24 of the cross beams.
A plurality of (in the illustrated case, a total of eight) rectangular reinforcing plates 25 fixed by welding between them, and a base fixed by welding between the steel plates 21 and the flanges 24 of the cross beams 22 located at the front and rear ends of the reinforcing plate 20. A plurality of shaped reinforcing plates 26 (a total of four in the illustrated case)
It consists of and.
【００１０】なお、長方形の補強板２５は、所望により
取り付けなくてもよい。更に、図１のように、各横桁２
２の下面には、ほぼ台形状の上部ガセット３２を２個、
溶接固定する。この上部ガセット３２及び上記補強版２
０は、図示しない工場内で製作する。図１に示すよう
に、補強版２０の幅Ｌ1 は、床版下面３の平坦部分４の
幅Ｌ2より、多少、広くなっており、鉄筋コンクリート
床版１のハンチ部５の一部を支持するようになってい
る。The rectangular reinforcing plate 25 may not be attached if desired. Furthermore, as shown in FIG.
On the lower surface of 2, two substantially trapezoidal upper gussets 32,
Fix by welding. The upper gusset 32 and the reinforcing plate 2
0 is manufactured in a factory (not shown). As shown in FIG. 1, the width L 1 of the reinforcing slab 20 is slightly larger than the width L 2 of the flat portion 4 of the bottom surface 3 of the floor slab, and supports a part of the haunch portion 5 of the reinforced concrete floor slab 1. It is supposed to do.
【００１１】更に、図１に示すように、主桁２の下部フ
ランジ６上には、補強版２０に固定された上部ブラケッ
ト３２に対向する下部ガセット３３を取り付け、この上
下両ガセット３２，３３間にコ字形断面の斜材３１を斜
め、すなわち、左右両側の斜材３１，３１の上端部の幅
Ｌ3 が下端部の幅Ｌ4 より狭くなるように取り付けてい
る。斜材３１と上下両ガセット３２，３３とは、ハイテ
ンションボルト３４によって固定されている。Further, as shown in FIG. 1, on the lower flange 6 of the main girder 2, a lower gusset 33 facing the upper bracket 32 fixed to the reinforcing plate 20 is attached, and between the upper and lower gussets 32, 33. The diagonal member 31 having a U-shaped cross-section is attached obliquely, that is, the width L 3 of the upper ends of the diagonal members 31, 31 on the left and right sides is smaller than the width L 4 of the lower end. The diagonal member 31 and the upper and lower gussets 32 and 33 are fixed by a high tension bolt 34.
【００１２】また、下部ブラケット３３は、ベースプレ
ート３５を介して主桁２の下部フランジ６の内側部分６
ａにハイテンションボルト３４によって固定されると共
に、ベースプレート３６を介して主桁２の側壁部７にハ
イテンションボルト３４によって固定されている。な
お、図１に示すように、既設の中間対傾構の下弦材８を
残すことにより、斜材３１からの反力に起因する主桁２
の『開き』を防止できる利点がある。The lower bracket 33 has an inner portion 6 of the lower flange 6 of the main girder 2 via a base plate 35.
It is fixed to a by the high tension bolt 34, and is fixed to the side wall portion 7 of the main girder 2 via the base plate 36 by the high tension bolt 34. In addition, as shown in FIG. 1, by leaving the lower chord member 8 of the existing intermediate pair tilt structure, the main girder 2 caused by the reaction force from the diagonal member 2
It has the advantage of preventing "opening".
【００１３】また、補強時に鉄筋コンクリート床板１の
下面３と鋼板２１との間の隙間には、鋼板２１の側面や
鋼板２１に設けた図示しない注入口などから充填材（セ
メントグラウト又はエポキシ系樹脂）を注入する。一
方、鉄筋コンクリート床版１の左右両側に張り出してい
る張出し部１０を補強する場合は、鉄筋コンクリート床
版１の張出し部１０の下面１３に補強版１２０を当接す
ると共に、この補強版１２０を、補強版１２０を構成す
る横桁１２２の下面に固定させた上部ガセット１３２と
主桁２の下部フランジ６の外側部分６ｂと主桁２の側壁
部７間に固定させた下部ガセット１３３との間に取り付
けた斜材１３１によって支持するようになっている。In addition, in the gap between the lower surface 3 of the reinforced concrete floorboard 1 and the steel plate 21 at the time of reinforcement, a filler (cement grout or epoxy resin) is introduced from the side surface of the steel plate 21 or an injection port (not shown) provided in the steel plate 21. Inject. On the other hand, in the case of reinforcing the overhanging portions 10 that extend to the left and right sides of the reinforced concrete floor slab 1, the reinforcing plate 120 is brought into contact with the lower surface 13 of the overhanging portion 10 of the reinforced concrete floor slab 1 and the reinforcing plate 120 is It was attached between the upper gusset 132 fixed to the lower surface of the horizontal girder 122 constituting the 120 and the lower gusset 133 fixed between the outer portion 6b of the lower flange 6 of the main girder 2 and the side wall portion 7 of the main girder 2. It is adapted to be supported by a diagonal member 131.
【００１４】なお、この補強版１２０は、床版下面中央
部の平坦部分を補強する補強版２０とほぼ同構造である
から詳細な説明を省略する。上記のように、主桁２によ
って支持された鉄筋コンクリート床版１の下面３（１
３）に、鋼板２１（１２１）と鋼板の下面に一定間隔で
固定した複数の横桁２２（１２２）とからなる補強版２
０（１２０）を当接すると共に、該補強版２０（１２
０）を、該補強版２０（１２０）と前記主桁２間に斜交
いに配設した多数の斜材３１（１３１）で支持したの
で、鉄筋コンクリート床版１の下面中央部の平坦部分４
を補強できるばかりでなく、鉄筋コンクリート床版１の
左右両側に張り出している張出し部１０も補強できる。Since the reinforcing plate 120 has substantially the same structure as the reinforcing plate 20 for reinforcing the flat portion in the center of the lower surface of the floor slab, detailed description thereof will be omitted. As described above, the lower surface 3 (1 of the reinforced concrete floor slab 1 supported by the main girder 2
3) A reinforcing plate 2 composed of a steel plate 21 (121) and a plurality of cross girders 22 (122) fixed to the lower surface of the steel plate at regular intervals.
0 (120) is abutted and the reinforcing plate 20 (12
0) was supported by a large number of diagonal members 31 (131) arranged in an oblique manner between the reinforcing plate 20 (120) and the main girder 2, so that the flat portion 4 at the center of the lower surface of the reinforced concrete floor slab 1
Not only can it be reinforced, but also the overhanging portions 10 that project to the left and right sides of the reinforced concrete floor slab 1 can be reinforced.
【００１５】また、補強版２０（１２０）と主桁２間に
斜めに取り付けた斜材３１（１３１）は、ハイテンショ
ンボルト３４によって固定されるので、現場での溶接作
業が不要となり、工期の短縮を計ることが可能になる。Further, since the diagonal member 31 (131) obliquely attached between the reinforcing plate 20 (120) and the main girder 2 is fixed by the high tension bolt 34, welding work at the site is unnecessary, and the construction period is reduced. It becomes possible to measure shortening.
【００１６】[0016]
【発明の効果】上記のように、本発明は、主桁によって
支持された鉄筋コンクリート床版の下面に、鋼板と鋼板
の下面に一定間隔で固定した複数の横桁とからなる補強
版を当接すると共に、該補強版を、該補強版と前記主桁
間に斜交いに配設した多数の斜材で支持したので、次の
ような、種々の優れた効果を奏することができる。As described above, according to the present invention, a reinforcing plate composed of a steel plate and a plurality of cross girders fixed to the lower surface of the steel plate at regular intervals is brought into contact with the lower surface of the reinforced concrete floor slab supported by the main girder. At the same time, since the reinforcing plate is supported by a large number of diagonal members obliquely arranged between the reinforcing plate and the main girder, the following various excellent effects can be achieved.
【００１７】すなわち、 鉄筋コンクリート床版下面の平坦部分を補強できる
ばかりでなく、鉄筋コンクリート床版の左右両側に張り
出した張出し部も補強可能である。 また、補強版と主桁間に斜めに取り付けた斜材は、
ハイテンションボルトによって固定されるので、現場で
の溶接作業が不要となり、工期の短縮を計ることが可能
になる。That is, not only can the flat portion of the lower surface of the reinforced concrete floor slab be reinforced, but also the overhanging portions that project to the left and right sides of the reinforced concrete floor slab can be reinforced. In addition, the diagonal material installed diagonally between the reinforcing plate and the main girder,
Since it is fixed with high tension bolts, welding work at the site is not required and the work period can be shortened.
【００１８】 鉄筋コンクリート床版上を走行する自
動車などの荷重が直接、斜材に伝達され易くなるので、
鉄筋コンクリート床版の負担を軽減でき、その損傷を防
止できる。 既存の下弦材を残すことにより、斜材からの反力に
よる主桁の『開き』を防止できる。Since the load of an automobile or the like running on a reinforced concrete floor slab is easily transmitted directly to the diagonal member,
The load on the reinforced concrete floor slab can be reduced and its damage can be prevented. By leaving the existing lower chord member, it is possible to prevent the main girder from "opening" due to the reaction force from the diagonal member.
【図１】本発明に係る床版補強構造を示す断面図であ
る。FIG. 1 is a cross-sectional view showing a floor slab reinforcing structure according to the present invention.
【図２】補強版の一部断面を含む平面図である。FIG. 2 is a plan view including a partial cross section of a reinforcing plate.
【図３】図２のIII −III 断面図である。3 is a sectional view taken along line III-III in FIG.
１ 鉄筋コンクリート床版 ２ 主桁 ３ 鉄筋コンクリート床版の下面 ２１ 鋼板 ２０，１２０ 補強版 ２２，１２２
横桁 ３１，１３１ 斜材1 Reinforced concrete floor slab 2 Main girder 3 Lower surface of reinforced concrete floor slab 21 Steel plate 20,120 Reinforcement slab 22,122
Cross girder 31,131 diagonal material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 裕二 東京都中央区築地５丁目６番４号 三井造 船株式会社内 (72)発明者 池谷 信貴 東京都中央区築地５丁目６番４号 三井造 船株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yuji Tanaka 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui Engineering & Shipbuilding Co., Ltd. (72) Inventor Nobutaka Iketani 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui Shipbuilding Co., Ltd.
Claims (4)
ト床版の下面に、鋼板と鋼板の下面に一定間隔で固定し
た複数の横桁とからなる補強版を当接すると共に、該補
強版を、該補強版と前記主桁間に斜交いに配設した多数
の斜材で支持することを特徴とする床版補強構造。1. A reinforcing plate composed of a steel plate and a plurality of cross girders fixed to the lower surface of the steel plate at regular intervals is brought into contact with the lower surface of the reinforced concrete floor slab supported by the main girder, and the reinforcing plate is reinforced with the reinforcing plate. A floor slab reinforcement structure characterized by being supported by a large number of diagonal members diagonally arranged between the plate and the main girders.
た２つの主桁と、この隣接した２つの主桁間に位置する
鉄筋コンクリート床版の下面に当接させた補強版との間
に斜材をハ字形に配設する請求項１記載の床版補強構
造。2. A diagonal member is provided between two adjacent main girders supporting the reinforced concrete floor slab and a reinforcing plate abutting the lower surface of the reinforced concrete floor slab located between the two adjacent main girders. The floor slab reinforcement structure according to claim 1, wherein the floor slab reinforcement structure is arranged in a letter shape.
出している張出し部の下面に、鋼板と鋼板の下面に一定
間隔で固定した複数の横桁とからなる補強版を当接する
と共に、該補強版を、該補強版と前記主桁間に斜交いに
配設した多数の斜材で支持することを特徴とする床版補
強構造。鉄筋コンクリート床版を3. A reinforcing plate composed of a steel plate and a plurality of cross girders fixed at regular intervals to the lower surface of the steel plate is brought into contact with the lower surfaces of the overhanging parts projecting to the left and right sides of the reinforced concrete floor slab, and the reinforcing plate is A floor slab reinforcement structure characterized by being supported by a large number of diagonal members obliquely arranged between the reinforcement plate and the main girder. Reinforced concrete floor slab
と、鉄筋コンクリート床版の下面に当接させた補強版と
にそれぞれブラケットを固定すると共に、これらのブラ
ケットに斜材をボルトで固定する請求項１記載の床版補
強構造。4. The main girder supporting the reinforced concrete floor slab and the reinforcing plate abutting on the lower surface of the reinforced concrete floor slab, and the diagonal members are bolted to these brackets. Floor slab reinforcement structure as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27796894A JP3047208B2 (en) | 1994-11-11 | 1994-11-11 | Floor slab reinforcement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27796894A JP3047208B2 (en) | 1994-11-11 | 1994-11-11 | Floor slab reinforcement structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08134842A true JPH08134842A (en) | 1996-05-28 |
| JP3047208B2 JP3047208B2 (en) | 2000-05-29 |
Family
ID=17590782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27796894A Expired - Lifetime JP3047208B2 (en) | 1994-11-11 | 1994-11-11 | Floor slab reinforcement structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3047208B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100463073B1 (en) * | 2002-09-17 | 2004-12-23 | 배석동 | Triangle Support Post of Bridge Deck Maintenance and Using Maintenance and Reinforce Method Thereof |
| CN110878522A (en) * | 2019-11-26 | 2020-03-13 | 湖北省路桥集团有限公司 | Main tower lower cross beam construction system and construction method |
| CN110886227A (en) * | 2019-12-03 | 2020-03-17 | 湖北省路桥集团有限公司 | Main tower cast-in-place lower cross beam support system and construction method |
-
1994
- 1994-11-11 JP JP27796894A patent/JP3047208B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100463073B1 (en) * | 2002-09-17 | 2004-12-23 | 배석동 | Triangle Support Post of Bridge Deck Maintenance and Using Maintenance and Reinforce Method Thereof |
| CN110878522A (en) * | 2019-11-26 | 2020-03-13 | 湖北省路桥集团有限公司 | Main tower lower cross beam construction system and construction method |
| CN110878522B (en) * | 2019-11-26 | 2021-03-16 | 湖北省路桥集团有限公司 | Main tower lower cross beam construction system and construction method |
| CN110886227A (en) * | 2019-12-03 | 2020-03-17 | 湖北省路桥集团有限公司 | Main tower cast-in-place lower cross beam support system and construction method |
| CN110886227B (en) * | 2019-12-03 | 2021-09-14 | 湖北省路桥集团有限公司 | Main tower cast-in-place lower cross beam support system and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3047208B2 (en) | 2000-05-29 |
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