JP3962138B2 - RC synthetic steel slab girder bridge - Google Patents
RC synthetic steel slab girder bridge Download PDFInfo
- Publication number
- JP3962138B2 JP3962138B2 JP33011097A JP33011097A JP3962138B2 JP 3962138 B2 JP3962138 B2 JP 3962138B2 JP 33011097 A JP33011097 A JP 33011097A JP 33011097 A JP33011097 A JP 33011097A JP 3962138 B2 JP3962138 B2 JP 3962138B2
- Authority
- JP
- Japan
- Prior art keywords
- floor slab
- girder
- deck plate
- steel slab
- girder bridge
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 15
- 239000010959 steel Substances 0.000 title claims description 15
- 239000002131 composite material Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 241000237503 Pectinidae Species 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 235000020637 scallop Nutrition 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は、桁と床版及び舗装部を主体とするRC合成鋼床版桁橋に関する。
【0002】
【従来の技術】
従来のRC合成床版橋は、桁と床版を工場で別々に製作し、現場で一体化させたものである。また、従来の鋼床版桁橋は、デッキプレートの下面に縦リブを取り付けたものであり、デッキプレートの上面がフラットになっている。
【0003】
【発明が解決しようとする課題】
上記のように、桁と床版を工場で別々に製作し、現場で一体化させる方式は、現場で桁と床版を一体化させる現場接合作業が欠かせないので、どうしても現場作業が多くなる一方、工場と違って良好でない作業環境下で作業しなければならない事態が生じ易い。
【0004】
また、デッキプレートの下面に縦リブを取り付ける場合は、複雑なスカーラップの製作が欠かせないのみならず、縦リブと横桁の交差部に応力が集中して疲労し易いという問題がある。
更に、フラットなデッキプレートの上面に打設したアスファルト舗装面にひび割れが生じ易いという問題もある。また、鋼材の熱伝導率が大きいことより路面が凍結し易く、また、騒音が発生し易いなどの問題がある。
【0005】
本発明は、かかる従来の問題を解消すべく創案されたものであって、その目的とするところは、上記の如き欠点のない新規なRC合成鋼床版桁橋を提供することにある。
【0006】
【課題を解決するための手段】
即ち、本願の請求項1に係る発明は、桁と床版及び舗装部を主体とするRC合成鋼床版桁橋であって、前記床版を、デッキプレートと、該デッキプレートの上面に溶接固定させた多数の縦リブにより形成すると共に、前記デッキプレートの下面に横リブおよび主桁を溶接固定させ、且つ、前記縦リブの上に前記縦リブと交差する方向に向けて配置した多数の鉄筋を固定し、その上にコンクリートを打設することによって前記コンクリートと鋼床版を合成させたことを特徴とするRC合成鋼床版桁橋である。
【0007】
【発明の実施の形態】
以下、図面により本発明の実施の形態を説明する。
図2に示すように、本発明のRC合成鋼床版桁橋1は、主として、床版2と、該床版2に結合させた左右一対の主桁3および床版2上に打設させた舗装部4から形成されている。
【0008】
このRC合成鋼床版桁橋1の片側は、図2に示すように、第1,第2,第3の3つのブロックA,B,Cから形成されており、特に、第2のブロックBは、図4に示すように、工場にて、予め、床版2と主桁3が一体的に結合されている。
この第2のブロックBの床版2は、図1に示すように、主として、デッキプレート5と、該デッキプレート5の上面に溶接固定させた多数の縦リブ6から形成されている。図では、縦リブ6の上に多数の主鉄筋7が固定されているが、この主鉄筋7は、所望により、縦リブ6上に現場で固定してもよい。更に、デッキプレート5の下面に横リブ8および主桁3が溶接固定されている。
【0009】
第1のブロックAおよび第3のブロックCの床版も第2のブロックBの床版2と同様に形成されている(図3及び図5参照)。
なお、図2に示すように、左右にある第3のブロックCは、連結ブロックDによって互いに連結されている。
ここで、縦リブとしては、横断面L字形のリブが望ましいが、例えば、平板、バルブ形、あるいはU形リブでもよい。
【0010】
また、主桁3は、図4に示すように、横断面コの字形でもよいが、図6に示すように、横断面I字形でもよい。
【0011】
【発明の効果】
上記のように、本発明は、床版が、デッキプレートと、該デッキプレートの上面に配設させた縦リブから形成されているので、複雑なスカーラップの製作がなくなり、製作コストをコストダウンできる。また、縦リブと横リブとの交差部がなくなり、応力集中に起因する疲労を回避することができる。
【0012】
また、桁と床版の一部を、予め、一体的に結合させることにより、現場で桁と床版を結合させる現場作業がなくなり、工期の短縮を計ることができる。
また、本発明にあっては、床版の剛性が大きくなるため、舗装部のひび割れを防ぐことができる。また、縦リブは、主桁の有効断面の一部分であり、また、死荷重に対してのデッキの補強材、床版の配力鉄筋、および主鉄筋の位置決めなどの役割を担っている。
【0013】
さらに、デッキプレートは、主桁のフランジ、床板用の型枠、および下側鉄筋筋の役目など担っている。
【図面の簡単な説明】
【図1】第2床版ブロックの一部断面を含む斜視図である。
【図2】本発明のかかるRC合成鋼床版桁橋の正面図である。
【図3】第1床版ブロックの斜視図である。
【図4】第2床版ブロックの斜視図である。
【図5】第3床版ブロックの他の例を示す斜視図である。
【図6】第2床版ブロックの斜視図である。
【符号の説明】
1 RC合成鋼床版桁橋 2 床版
3 桁 4 舗装部
5 デッキプレート 6 縦リブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an RC composite steel slab girder bridge mainly composed of a girder, a floor slab, and a pavement.
[0002]
[Prior art]
The conventional RC composite floor slab bridge is made by separately manufacturing girders and floor slabs at the factory and integrating them on site. Moreover, the conventional steel deck girder bridge has a vertical rib attached to the lower surface of the deck plate, and the upper surface of the deck plate is flat.
[0003]
[Problems to be solved by the invention]
As mentioned above, the method of manufacturing the girder and floor slab separately at the factory and integrating them at the site is indispensable to the on-site joining work that integrates the girder and the floor slab at the site. On the other hand, unlike a factory, a situation that requires working in an unfavorable working environment tends to occur.
[0004]
In addition, when the vertical rib is attached to the lower surface of the deck plate, it is not only indispensable to manufacture a complicated scar wrap, but also there is a problem that stress is concentrated at the intersection of the vertical rib and the cross beam and fatigue is easily caused.
Further, there is a problem that cracks are likely to occur on the asphalt pavement surface placed on the upper surface of the flat deck plate. Further, since the thermal conductivity of the steel material is large, there are problems that the road surface is easily frozen and noise is easily generated.
[0005]
The present invention was devised to solve such a conventional problem, and an object of the present invention is to provide a new RC composite steel slab girder bridge which does not have the above-mentioned drawbacks.
[0006]
[Means for Solving the Problems]
That is, the invention according to claim 1 of the present application is an RC composite steel slab girder bridge mainly composed of a girder, a floor slab, and a pavement. The floor slab is welded to a deck plate and an upper surface of the deck plate. and forming a plurality of longitudinal ribs were fixed, the lateral ribs and the main girder to the underside of the deck plate is welded, and a number of which are arranged in a direction crossing the longitudinal ribs on the longitudinal rib An RC composite steel slab girder bridge characterized in that the concrete and the steel slab are synthesized by fixing a reinforcing bar and placing concrete thereon.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 2, the RC synthetic steel floor slab bridge 1 of the present invention is mainly driven on a
[0008]
As shown in FIG. 2, one side of the RC composite steel slab girder bridge 1 is formed of three blocks A, B, and C, and in particular, the second block B As shown in FIG. 4, the
As shown in FIG. 1, the
[0009]
The floor slabs of the first block A and the third block C are formed in the same manner as the floor slab 2 of the second block B (see FIGS. 3 and 5).
As shown in FIG. 2, the third blocks C on the left and right are connected to each other by a connecting block D.
Here, as the vertical rib, a rib having an L-shaped cross section is desirable, but for example, a flat plate, a valve shape, or a U-shaped rib may be used.
[0010]
Further, the
[0011]
【The invention's effect】
As described above, according to the present invention, since the floor slab is formed of the deck plate and the vertical ribs disposed on the upper surface of the deck plate, the production of complicated scallops is eliminated and the production cost is reduced. it can. Moreover, the intersection part of a vertical rib and a horizontal rib is lose | eliminated, and the fatigue resulting from stress concentration can be avoided.
[0012]
In addition, by combining a part of the girder and the floor slab in advance, there is no field work for coupling the girder and the floor slab at the site, and the construction period can be shortened.
Moreover, in the present invention, since the rigidity of the floor slab is increased, it is possible to prevent cracking of the pavement. Further, the vertical rib is a part of the effective cross section of the main girder, and plays a role such as positioning of the reinforcing material of the deck against the dead load, the distribution reinforcing bar of the floor slab, and the main reinforcing bar.
[0013]
Furthermore, the deck plate is responsible for the main girder flange, the floor plate formwork, and the role of the lower rebar.
[Brief description of the drawings]
FIG. 1 is a perspective view including a partial cross section of a second floor slab block.
FIG. 2 is a front view of the RC composite steel slab girder bridge according to the present invention.
FIG. 3 is a perspective view of a first floor slab block.
FIG. 4 is a perspective view of a second floor slab block.
FIG. 5 is a perspective view showing another example of the third floor slab block.
FIG. 6 is a perspective view of a second floor slab block.
[Explanation of symbols]
1 RC composite steel
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33011097A JP3962138B2 (en) | 1997-12-01 | 1997-12-01 | RC synthetic steel slab girder bridge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33011097A JP3962138B2 (en) | 1997-12-01 | 1997-12-01 | RC synthetic steel slab girder bridge |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11158816A JPH11158816A (en) | 1999-06-15 |
JP3962138B2 true JP3962138B2 (en) | 2007-08-22 |
Family
ID=18228916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33011097A Expired - Lifetime JP3962138B2 (en) | 1997-12-01 | 1997-12-01 | RC synthetic steel slab girder bridge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3962138B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4143935B2 (en) * | 2006-09-08 | 2008-09-03 | 首都高速道路株式会社 | Vertical rib composite floor slab |
CN102433837B (en) * | 2011-12-26 | 2014-03-12 | 中铁大桥勘测设计院集团有限公司 | Orthogonal anisotropic plate integrated steel bridge deck of side box girder and longitudinal and transverse beam railway and construction method |
CN111576253A (en) * | 2020-05-20 | 2020-08-25 | 中铁六局集团有限公司 | Bridge deck pavement surface crack control method |
-
1997
- 1997-12-01 JP JP33011097A patent/JP3962138B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH11158816A (en) | 1999-06-15 |
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