JPH0790970A - Composite floor slab, execution method thereof and joint section of composite floor slab - Google Patents
Composite floor slab, execution method thereof and joint section of composite floor slabInfo
- Publication number
- JPH0790970A JPH0790970A JP17561594A JP17561594A JPH0790970A JP H0790970 A JPH0790970 A JP H0790970A JP 17561594 A JP17561594 A JP 17561594A JP 17561594 A JP17561594 A JP 17561594A JP H0790970 A JPH0790970 A JP H0790970A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- floor slab
- steel
- composite floor
- plate
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本願発明は、主構造を鋼製部材で
構成し、内部に充填材を充填した複合床版、その施工方
法、及び継手部に関するものであり、橋梁等に用いられ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite floor slab having a main structure made of a steel member and filled with a filler, a method of constructing the composite floor slab, and a joint portion, and is used for bridges and the like.
【０００２】[0002]
【従来の技術】橋梁等に用いられる床版の構造には、Ｒ
Ｃ床版、鋼床版、合成床版等がある。2. Description of the Related Art The structure of floor slabs used for bridges, etc.
There are C floor slab, steel floor slab, synthetic floor slab, and the like.
【０００３】ＲＣ床版は、図１２に示すように鉄筋１５
及びコンクリート１６により構成されており、圧縮に対
しては主としてコンクリート１６が抵抗し、引張に対し
ては鉄筋１５が抵抗している。The RC floor slab has a reinforcing bar 15 as shown in FIG.
And the concrete 16, the concrete 16 mainly resists compression, and the reinforcing bar 15 resists tension.
【０００４】鋼床版は、図１３に示すように各種鋼板を
組み合わせることにより構成されている。床版面を構成
する鋼板１７、縦リブ１８及び横リブ１９がそれぞれ溶
接され、所定の耐荷力を発揮している。The steel deck is constructed by combining various steel plates as shown in FIG. The steel plate 17, the vertical ribs 18, and the horizontal ribs 19 that form the floor slab are welded to each other to exhibit a predetermined load bearing force.
【０００５】合成床版は鋼材とコンクリートの長所を効
果的に利用した構造であり、様々な構造が開発されてい
る。図１４はその一例を示したものであり、底鋼板２０
とコンクリート２１がずれ止め２２により合成され、床
版上部には鉄筋２３が配筋されている。The synthetic floor slab is a structure that effectively utilizes the advantages of steel and concrete, and various structures have been developed. FIG. 14 shows an example of the bottom steel plate 20.
The concrete 21 is combined with the slip stopper 22, and the reinforcing bar 23 is arranged on the upper part of the floor slab.
【０００６】[0006]
【発明が解決しようとする課題】ＲＣ床版は、架設現場
において型枠を組み立てる必要があること、養生の期間
が長いこと等から現場工期が長くなる傾向にある。さら
に、ＲＣ床版の主構造であるコンクリートは繰り返し荷
重によりひび割れが生じ、床版としての機能が損なわれ
やすい形式である。その結果、床版の取り替え、補修の
時期が早くなるとともに、その工事が非常に困難であ
る。[Problems to be Solved by the Invention] RC floor slabs tend to have a longer construction period due to the need to assemble the formwork at the construction site and the long curing period. Furthermore, concrete, which is the main structure of RC floor slabs, is a type in which cracks are generated by repeated loading and the function of the floor slabs is easily impaired. As a result, replacement of floor slabs and repairs become earlier, and the construction work is extremely difficult.
【０００７】鋼床版は架設現場における工期が短くなる
という利点を有しているが、数多くの部材の組み合わせ
により構成されているため、工場における製作・組立の
加工度が非常に高く、経済的に不利になる傾向にある。[0007] The steel deck has the advantage that the construction period at the erection site can be shortened, but since it is composed of a combination of many members, the workability of manufacturing and assembling in the factory is very high, and it is economical. Tends to be at a disadvantage.
【０００８】合成床版は鋼材及びコンクリートの長所を
生かして耐荷力の向上を図っているが、ＲＣ床版同様、
主部材にコンクリートを使用しているため、架設現場に
おける工期が長くなること、床版の取り替え、補修の時
期が早くなること等の課題を残している。Synthetic floor slabs aim to improve load bearing capacity by taking advantage of the advantages of steel and concrete.
Since concrete is used for the main member, there are problems such as a longer construction period at the construction site, replacement of floor slabs, and earlier repairs.
【０００９】本願発明は、従来のＲＣ床版、合成床版の
課題である架設現場における工期の長期化、床版損傷頻
度の高さ、及び鋼床版の課題である工場における製作・
組立加工度の増大傾向を解決する複合床版の構造、及び
それに適した施工方法、継手部の構造を提供することを
目的としたものである。The invention of the present application is the problem of conventional RC floor slabs and composite floor slabs that the construction period is prolonged in the erection site, the frequency of floor slab damage is high, and the production of steel floor slabs in a factory is a problem.
An object of the present invention is to provide a structure of a composite floor slab that solves the tendency of increasing the degree of assembling, a construction method suitable for the structure, and a structure of a joint portion.
【００１０】[0010]
【課題を解決するための手段】本願発明の複合床版は、
主構造を底鋼板と、その上面に所要間隔で並列配置した
複数本の形鋼、及び隣接する形鋼間に架け渡した連結鋼
板とで構成し、底鋼板と連結鋼板との間に形成される中
空部に補強材または補剛材としての充填材を充填したも
のである。The composite floor slab of the present invention comprises:
The main structure is composed of a bottom steel plate, a plurality of shaped steel plates arranged in parallel on the upper surface at required intervals, and a connecting steel plate spanned between adjacent shaped steel plates, and is formed between the bottom steel plate and the connecting steel plate. The hollow part is filled with a filler as a reinforcing material or a stiffening material.
【００１１】底鋼板上に配置される形鋼としては、例え
ばＴ形鋼、Ｈ形鋼、溝形鋼等を用いることができ、通
常、工場等で形鋼の下縁または下フランジを溶接等によ
り底鋼板に接合する。As the shaped steel arranged on the bottom steel plate, for example, T-shaped steel, H-shaped steel, grooved steel and the like can be used. Usually, the lower edge or the lower flange of the shaped steel is welded at a factory or the like. To join the bottom steel plate.
【００１２】本願発明における充填材は主構造としての
機能を期待したものではなく、底鋼板や形鋼等の鋼材か
らなる主構造を中空部の内側から補強、補剛するために
用いている。The filler in the present invention is not expected to function as a main structure, and is used to reinforce and stiffen the main structure made of steel material such as bottom steel plate and shaped steel from the inside of the hollow portion.
【００１３】充填材の材料としては、コンクリート、発
泡コンクリート、軽量コンクリート、発泡スチロール等
の有機系発泡材等が使用可能であり、床版の取扱いの容
易さを考えた場合には軽量なものが望ましい。As the material of the filler, concrete, foamed concrete, lightweight concrete, organic foamed material such as styrene foam, etc. can be used, and in consideration of the ease of handling the floor slab, a lightweight material is desirable. .
【００１４】なお、複合床版の充填材の充填作業は、工
場で実施した後、現場に搬入する方法と、鋼殻のみを工
場で製作し、架設の後、現場で充填する方法とがある。The filling work of the filling material of the composite floor slab is carried out in a factory and then carried into the site, or a method in which only steel shells are manufactured in the factory and installed and then filled in the site. .
【００１５】本願の請求項２記載の発明である複合床版
の施工方法は、請求項１記載の複合床版を施工するに当
り、底鋼板と、その上面に所要間隔で並列配置した複数
本の形鋼と、隣接する形鋼間に架け渡した連結鋼板と
で、底鋼板と連結鋼板との間に中空部を形成した鋼殻を
所定位置に架設した後、中空部に超流動コンクリートを
充填することにより複合床版を施工するものである。In the method for constructing a composite floor slab according to claim 2 of the present application, when the composite floor slab according to claim 1 is constructed, a bottom steel plate and a plurality of steel plates arranged in parallel at a predetermined interval on the upper surface thereof are used. After the steel shell with a hollow part is erected at a predetermined position between the bottom steel plate and the connecting steel plate with the connecting steel plate bridged between the adjacent shaped steels, A composite floor slab is constructed by filling.
【００１６】ここで、超流動コンクリートとは、著しく
流動性が高くスランプフロー値が４０cm以上であるとと
もに、水平方向の移動に対しても十分な分離抵抗性を有
するコンクリートをいう。Here, the superfluid concrete is a concrete having extremely high fluidity, a slump flow value of 40 cm or more, and sufficient separation resistance against horizontal movement.
【００１７】従来、このような超流動コンクリートとし
ては、フライアッシュ微粉末、高炉スラグ微粉末等の混
和材を用い、さらに界面活性剤、高性能減水剤等の混和
剤を添加したものが種々開発されており、ハイパーフォ
ーマンスコンクリート、高流動性コンクリートとも呼ば
れている。Conventionally, as such super-fluid concrete, various admixtures such as fly ash fine powder and blast furnace slag fine powder are used, and further admixtures such as surfactants and high-performance water reducing agents are added. It is also known as hyper-performance concrete or high-fluidity concrete.
【００１８】また、骨材に軽量骨材を用いることにより
超流動軽量骨材コンクリートとすることも可能である。Further, it is possible to obtain a superfluid lightweight aggregate concrete by using the lightweight aggregate as the aggregate.
【００１９】本願の請求項３記載の発明である複合床版
の継手部は、請求項１記載の複合床版の形鋼に平行する
方向の継手部に関するものであり、隣り合う複合床版の
底鋼板どうしを、形鋼方向に連続する底鋼板用下側添接
板と底鋼板用上側添接板とで挟み込んで高力ボルト摩擦
接合により接合する。The joint portion of the composite floor slab according to claim 3 of the present application relates to the joint portion of the composite floor slab in the direction parallel to the section steel of the composite floor slab according to claim 1. The bottom steel plates are sandwiched between a bottom welding plate for the bottom steel plate and an upper welding plate for the bottom steel plate that are continuous in the direction of the shape steel, and are joined by high-strength bolt friction welding.
【００２０】底鋼板用上側添接板には上端にフランジ鋼
板を有する形鋼直角方向の仕切り鋼板が一体化されてお
り、この仕切り鋼板と形鋼に設けた縦リブ間を両面から
添接板を当てて高力ボルト摩擦接合する。A partition steel plate having a flanged steel plate at the upper end and a partition steel plate in the direction perpendicular to the shape steel plate is integrated with the upper attachment plate for the bottom steel plate. Apply high-strength bolts by friction.
【００２１】さらに、連結鋼板は形鋼及び仕切り鋼板の
フランジ上に溶接し、このように形成された鋼殻の底鋼
板と連結鋼板間の中空部に充填材を充填することで継手
部を形成する。Further, the joint steel plate is welded onto the flanges of the shaped steel and the partition steel plate, and the joint portion is formed by filling the filler in the hollow portion between the bottom steel plate and the joint steel plate of the steel shell thus formed. To do.
【００２２】本願の請求項４記載の継手部は、請求項３
記載の継手部において、さらに底鋼板用上側添接板に形
鋼方向の補剛材を一体化したものである。The joint part according to claim 4 of the present application is the same as claim 3.
In the joint portion described above, a stiffening member in the direction of the shaped steel is further integrated with the upper contact plate for the bottom steel plate.
【００２３】[0023]
【作用】本願発明の複合床版は、主構造を鋼板、形鋼等
の鋼製部材で構成し、従来の鋼床版に必要な縦リブ、横
リブ、その他の補剛材の機能を軽量コンクリート等の充
填材の充填効果で担っている。その結果、構成部材数を
削減することが可能となり、工場における製作・組立加
工度が低減できる。In the composite floor slab of the present invention, the main structure is composed of steel members such as steel plate and shaped steel, and the functions of vertical ribs, horizontal ribs and other stiffening materials required for the conventional steel floor slab are lightened. It is responsible for the filling effect of filling materials such as concrete. As a result, the number of constituent members can be reduced, and the manufacturing / assembling work degree in the factory can be reduced.
【００２４】一方、中空部の充填材は、工場製作時に充
填することも可能であり、その場合、架設現場において
は一部主桁との取り合い部分にコンクリート等を打設す
るだけでよく、架設現場における工期短縮が図れる。On the other hand, the filling material for the hollow portion can be filled at the time of manufacturing in a factory. In that case, at the erection site, it suffices to place concrete or the like at the part where the main girder is joined. The construction period can be shortened on site.
【００２５】さらに、本願発明では充填材としてコンク
リートを用いた場合においても、充填材を主部材として
期待しておらず、主構造を構成する鋼製部材の補強材ま
たは補剛材としてのみ考慮している。従って、繰り返し
荷重が作用したときにひび割れが生じても床版としての
機能が損なわれることはなく、鋼床版と同様、床版の耐
久性が長期にわたり十分に期待できる構造である。Further, in the present invention, even when concrete is used as the filler, the filler is not expected as the main member, and is considered only as a reinforcing material or stiffening material for the steel members constituting the main structure. ing. Therefore, even if cracks occur when a repeated load is applied, the function as a floor slab is not impaired, and the durability of the floor slab can be expected to be sufficiently long-term like the steel floor slab.
【００２６】次に、本願の請求項２記載の施工方法の作
用について述べると、請求項１記載の複合床版における
充填材の材料としては、普通コンクリート、発泡コンク
リート、軽量骨材コンクリート、あるいは有機系の発泡
材等が考えられるが、このうち発泡コンクリート及び有
機系の発泡材では、繰り返し荷重の作用による充填材の
磨耗や体積の減少により、特に連結鋼板と充填材との間
に空隙が生ずる場合が考えられ、大型トラックが頻繁に
通行するような厳しい条件の場合には適当でない場合が
ある。Next, the operation of the construction method according to claim 2 of the present application will be described. The material of the filler in the composite floor slab according to claim 1 is ordinary concrete, foam concrete, lightweight aggregate concrete, or organic material. Although foamed materials of the system are considered, among them, in the foamed concrete and the organic foamed material, a gap is generated especially between the connecting steel plate and the filler due to wear of the filler and decrease in volume due to repeated load action. In some cases, it may not be appropriate under severe conditions where large trucks pass frequently.
【００２７】従って、このような厳しい条件の場合に
は、普通コンクリートもしくは軽量骨材コンクリート等
を用いることとなる。その場合、コンクリートの充填を
工場で行って、現場に搬入・架設するとすると、充填作
業は容易に実施できるものの、充填材の単位体積重量は
普通コンクリートで約２．３５t/m3、軽量骨材コンクリ
ートで１．７〜１．９t/m3であり、鋼殻のみの場合と比
較して重量が３倍程度となり、運搬・架設等の取扱いが
困難である。Therefore, under such severe conditions, ordinary concrete or lightweight aggregate concrete is used. In that case, if the concrete is filled at the factory and carried in and erected on site, the filling work can be carried out easily, but the unit volume weight of the filling material is about 2.35 t / m 3 of ordinary concrete, which is a lightweight aggregate. The concrete is 1.7 to 1.9 t / m 3 , and the weight is about three times that of the case where only the steel shell is used, and handling such as transportation and installation is difficult.
【００２８】一方、鋼殻のみを搬入・架設し、現場でコ
ンクリートを充填する場合、鋼殻は連結鋼板により上面
が覆われているため、コンクリートは上面の一部に設け
られたコンクリート打設孔から流し込み、水平方向に移
動させて充填する必要がある。On the other hand, when only the steel shell is carried in and installed and the concrete is filled at the site, since the upper surface of the steel shell is covered with the connecting steel plate, the concrete is placed in the concrete pouring hole provided in a part of the upper surface. It is necessary to pour it from above and move it horizontally to fill it.
【００２９】しかし、通常のコンクリートでは流動性が
悪く、コンクリートを確実に充填することが困難であ
る。特に、連結鋼板の下面とコンクリートとの間に隙間
が生じ、充填材の本来の目的である鋼製部材に対する補
強もしくは補剛の目的を果たせなくなる。また、通常の
コンクリートでは打設に際して水平方向に移動させる
と、材料が分離し、品質が低下する。However, ordinary concrete has poor fluidity, and it is difficult to reliably fill the concrete. In particular, a gap is created between the lower surface of the connecting steel plate and the concrete, and the original purpose of the filler, that is, the purpose of reinforcing or stiffening the steel member, cannot be achieved. In addition, in the case of ordinary concrete, if it is moved horizontally during pouring, the material will separate and the quality will deteriorate.
【００３０】これに対し、請求項２記載の複合床版の施
工方法によれば、運搬や架設に際しては、鋼殻のみであ
るため、軽量で取扱いが容易であるとともに、鋼殻の架
設後、超流動コンクリートを充填することにより、確実
かつ容易な充填が可能であり、現場作業の省力化と工期
の短縮が可能となる。On the other hand, according to the method for constructing a composite floor slab of claim 2, since only the steel shell is used for transportation and installation, it is lightweight and easy to handle, and after installation of the steel shell, By filling with superfluid concrete, reliable and easy filling is possible, which enables labor saving on site work and shortens the construction period.
【００３１】次に、本願の請求項３、４記載の複合床版
の継手部の作用について述べると、請求項１記載の複合
床版を現場に搬入する際、トラック輸送の寸法制限等か
ら、床版の幅は通常約２．５ｍ以下に制限されてしまう
ため、形鋼方向の現場継手が必要となる。Next, the operation of the joint portion of the composite floor slab according to claims 3 and 4 of the present application will be described. When the composite floor slab according to claim 1 is carried into the site, due to dimensional restrictions of truck transportation, Since the width of the slab is usually limited to about 2.5 m or less, a field joint in the shape steel direction is required.
【００３２】このような形鋼方向の現場継手部の構造と
して、最も簡単なものは隣接するパネル間において形鋼
のフランジを突き合せ溶接あるいは高力ボルト摩擦接合
により接合するものであるが、その場合、継手部におけ
る形鋼直角方向の剛性及び強度が本体部と比較して極端
に小さくなる場合がある。The simplest structure of the field joint in the direction of the shaped steel is to join the flanges of the shaped steel between adjacent panels by butt welding or high-strength bolt friction welding. In this case, the rigidity and strength of the joint in the direction perpendicular to the shaped steel may be extremely smaller than that of the main body.
【００３３】このため、通行車両の輪荷重のような集中
荷重が作用した場合、継手部における形鋼直角方向への
荷重分散効果が期待できず、作用位置近傍の床版のみで
荷重を負担することにより、局部的な床版形鋼方向発生
モーメントが増加する。Therefore, when a concentrated load such as a wheel load of a passing vehicle acts, the effect of distributing the load in the direction perpendicular to the shaped steel at the joint cannot be expected, and the load is borne by only the floor slab near the working position. As a result, the local moment generated in the floor slab steel direction increases.
【００３４】また、形鋼直角方向に生じるモーメントに
より継手部が変形し、床版上の舗装が損傷するととも
に、繰り返し荷重の作用によっては継手部が損傷するこ
とも考えられる。It is also conceivable that the joint portion is deformed by the moment generated in the direction perpendicular to the shaped steel, the pavement on the floor slab is damaged, and the joint portion is damaged by the action of repeated load.
【００３５】これに対し、本願請求項３，４記載の継手
部によれば、複合床版の底鋼板及び形鋼直角方向に設け
られた仕切り鋼板を、摩擦接合により直接連結した上、
連結鋼板を形鋼間に架け渡すことができるとともに、形
鋼直角方向の仕切り鋼板は下部が添接板に結合されてお
り、添接板を介して底鋼板と結合されているため、形鋼
直角方向にも十分な剛性を有し、床版本体部と同等の形
鋼直角方向剛性及び強度を有する現場継手とすることが
できる。On the other hand, according to the joint portion described in claims 3 and 4, the bottom steel plate of the composite floor slab and the partition steel plate provided in the right-angled direction of the shaped steel are directly connected by friction welding.
The connecting steel plates can be bridged between the shape steels, and the partition steel plate in the direction perpendicular to the shape steels is connected to the bottom plate through the lower part of the partition steel plate. A field joint having sufficient rigidity in the right-angled direction and having rigidity and strength in the right-angled section steel equivalent to that of the floor slab body can be obtained.
【００３６】また、底鋼板に形鋼方向の補剛材を設ける
場合には、添接板に補剛材を設けることにより、接合部
にも本体部と同等の補剛効果が期待できる。Further, when the bottom steel plate is provided with a stiffening member in the direction of the shaped steel, by providing the stiffening member on the splicing plate, a stiffening effect equivalent to that of the main body portion can be expected at the joint portion.
【００３７】[0037]
【実施例】次に、図示した実施例について説明する。EXAMPLES Next, the illustrated examples will be described.
【００３８】図１は、本願発明の複合床版を橋梁の床版
に適用した場合の一実施例を示したものである。床版下
面全体に配置されている底鋼板１と底鋼板１の上面に並
列配置された形鋼２（本実施例ではＴ形鋼）が床版に必
要とされる耐荷力を発揮し、形鋼２上面を連結している
連結鋼板３は、床版上面を形成するとともに形鋼２の形
状保持の効果を担っている。FIG. 1 shows an embodiment in which the composite floor slab of the present invention is applied to a bridge floor slab. The bottom steel plate 1 arranged on the entire lower surface of the floor slab and the shaped steel 2 (T-shaped steel in this embodiment) arranged in parallel on the upper surface of the bottom steel sheet 1 exert the load-bearing force required for the floor slab, The connecting steel plate 3 connecting the upper surfaces of the steel 2 forms the upper surface of the floor slab and has an effect of retaining the shape of the shaped steel 2.
【００３９】さらに、底鋼板１、形鋼２及び連結鋼板３
によって形成される中空部内に充填した充填材４は、床
版上面を形成する連結鋼板３を支持するとともに形鋼２
の形状維持効果を果たしている。Further, the bottom steel plate 1, the shaped steel 2 and the connecting steel plate 3
The filling material 4 filled in the hollow portion formed by supporting the connecting steel plate 3 forming the upper surface of the floor slab and the shaped steel 2
The shape is maintained.
【００４０】充填材４の充填作業は工場で実施し、現場
へ搬入することにより、現場作業の工期短縮が図れる
が、鋼製のパネルのみを工場で製作し、架設の後、現場
で充填することも可能である。The filling work of the filling material 4 is carried out at the factory, and the work period can be shortened by carrying it to the site, but only the steel panel is manufactured at the factory, and after the installation, it is filled at the site. It is also possible.
【００４１】橋梁の主桁６と床版は、取付穴５を介して
接合されており、主桁６と底鋼板１との隙間には型枠７
を側面にあてがい無収縮モルタル８を充填することによ
り密着させている。The main girder 6 of the bridge and the floor slab are joined together via the mounting holes 5, and the form 7 is provided in the gap between the main girder 6 and the bottom steel plate 1.
Is applied to the side surface and filled with non-shrinkable mortar 8 so as to be in close contact.
【００４２】図２は、主桁６と床版の接合部の断面を示
したもので、主桁６に溶植したずれ止め９が接合機能を
果たしている。なお、型枠７は左右にスライド可能であ
り、主桁６上フランジの端部にゴム片１０を介して密着
している。FIG. 2 shows a cross section of the joint portion between the main girder 6 and the floor slab, and the slip stoppers 9 implanted in the main girder 6 fulfill the joining function. The form 7 is slidable to the left and right, and is in close contact with the end of the upper flange of the main girder 6 via a rubber piece 10.
【００４３】本願発明の複合床版は、工場製作してパネ
ル形状で架設現場に搬入した後、一体化するのが運搬上
も有利であるが、その際のパネル間継手の構造として、
比較的簡易なものを図３〜図５に示す。The composite floor slab of the present invention is advantageous in terms of transportation when it is manufactured in a factory and brought into a erection site in a panel shape, and then it is integrated. However, as a structure of the inter-panel joint at that time,
A relatively simple one is shown in FIGS.
【００４４】図３及び図４は、橋軸直角方向の継手（形
鋼に平行する方向の継手）の例を示したもので、図３は
形鋼２の上フランジ相互を溶接１１により一体化した場
合、図４は形鋼２の上フランジ相互をボルト１２により
一体化した場合である。3 and 4 show an example of a joint in the direction perpendicular to the bridge axis (joint parallel to the shaped steel). In FIG. 3, the upper flanges of the shaped steel 2 are integrated by welding 11. 4 shows the case where the upper flanges of the shaped steel 2 are integrated by the bolts 12.
【００４５】図５は、橋軸方向の継手（形鋼と直交する
方向の継手）の例を示したもので、橋軸方向は基本的に
橋梁の主桁６上で接合する。この例では底鋼板１に取り
付けたボルト１４により、充填材４の上面に設置した連
結板１３を締め付け、一体化している。FIG. 5 shows an example of a joint in the bridge axis direction (joint in the direction orthogonal to the section steel), and the bridge axis direction is basically joined on the main girder 6 of the bridge. In this example, the connecting plate 13 installed on the upper surface of the filling material 4 is fastened and integrated by the bolt 14 attached to the bottom steel plate 1.
【００４６】図６は、請求項２の複合床版の施工方法の
一実施例を示したものである。FIG. 6 shows an embodiment of the method for constructing the composite floor slab of claim 2.
【００４７】床版の下面全体に配置されている底鋼板１
と底鋼板１の上面に並列配置された形鋼２が床版に必要
とされる耐荷力を発揮し、形鋼２上面を連結している連
結鋼板３は、床版上面を形成するとともに、形鋼２の形
状保持の役割を担っている点、さらに底鋼板１、形鋼２
及び連結鋼板３によって形成される中空部内に充填した
充填材４が、床版上面を形成する連結鋼板３を支持する
とともに、形鋼２の形状維持効果を果たしている点は、
図１の場合と同様である。Bottom steel plate 1 arranged on the entire lower surface of the floor slab
And shaped steels 2 arranged in parallel on the upper surface of the bottom steel plate 1 exert the load-bearing force required for the floor slab, and the connecting steel plate 3 connecting the upper surfaces of the shaped steel 2 forms the floor slab upper surface, and The point that plays the role of maintaining the shape of the shaped steel 2, and further the bottom steel plate 1 and the shaped steel 2
And the point that the filler 4 filled in the hollow portion formed by the connecting steel plate 3 supports the connecting steel plate 3 forming the upper surface of the floor slab and achieves the shape maintaining effect of the shaped steel 2.
This is similar to the case of FIG.
【００４８】本実施例において、これらの鋼材からなる
鋼殻中空部は、形鋼２と、適当な間隔に設けられた鋼製
の仕切壁３１によって仕切られ、それぞれ独立する隔室
が形成されている。各隔室には連結鋼板３上に、１つの
コンクリート打設孔３２と１つもしくは複数の空気抜き
孔３３を設けている。In the present embodiment, the hollow portion of the steel shell made of these steel materials is partitioned by the shaped steel 2 and a steel partition wall 31 provided at an appropriate interval to form independent compartments. There is. In each compartment, one concrete pouring hole 32 and one or a plurality of air vent holes 33 are provided on the connecting steel plate 3.
【００４９】また、打設孔３２には、適当な高さに打設
孔３２の周辺部を嵩上げするカラー３４を設けている。
打設孔３２は、隔室の端部に、また、空気抜き孔３３は
打設孔３２から最も離れた端部に設けられる。あるい
は、打設孔３２を隔室の中心付近に設け、隔室の周辺部
に空気抜き孔３３を設ける場合もある。Further, the driving hole 32 is provided with a collar 34 for raising the peripheral portion of the driving hole 32 to an appropriate height.
The driving hole 32 is provided at the end of the compartment, and the air vent hole 33 is provided at the end farthest from the driving hole 32. Alternatively, the driving hole 32 may be provided near the center of the compartment and the air vent hole 33 may be provided in the peripheral portion of the compartment.
【００５０】工場で製作された鋼殻は、現場に搬入され
た後、桁６上に架設される。その後、打設孔３２から超
流動コンクリートを打設する。この際、超流動コンクリ
ートは打設孔３２付近から水平移動し、空気を押し出し
ながら中空部を充填する。充填の最後には打設孔３２に
設けたカラー３４にも超流動コンクリートを満たし、カ
ラーの高さ分増加したコンクリートの重量により、空気
抜き孔３３からオーバーフローさせて充填を完全なもの
とする。The steel shell produced in the factory is carried on site and then erected on the girder 6. After that, superfluid concrete is poured from the casting hole 32. At this time, the superfluid concrete horizontally moves from the vicinity of the pouring hole 32 and fills the hollow portion while pushing out air. At the end of the filling, the collar 34 provided in the casting hole 32 is also filled with the superfluid concrete, and the weight of the concrete increased by the height of the collar causes the concrete to overflow from the air vent hole 33 to complete the filling.
【００５１】超流動コンクリートが固まった後、カラー
３４等を撤去し、打設孔３２及び空気抜き孔３３の表面
を平坦に仕上げて、完成させる。After the superfluid concrete is hardened, the collar 34 and the like are removed, and the surfaces of the casting hole 32 and the air vent hole 33 are finished to be flat and completed.
【００５２】各隔室内の超流動コンクリートは連続して
打ち込む必要がある。また、超流動コンクリートと言え
ども余りに長い距離の横移動をさせると材料の分離が発
生する可能性がある。従って、仕切壁３１の位置は一度
に打設可能な超流動コンクリート量と、超流動コンクリ
ートの水平移動距離を考慮して決定する。Superfluid concrete in each compartment must be continuously poured. Further, even in the case of superfluid concrete, if the material is laterally moved for an excessively long distance, material separation may occur. Therefore, the position of the partition wall 31 is determined in consideration of the amount of superfluid concrete that can be cast at one time and the horizontal movement distance of the superfluid concrete.
【００５３】図７〜図９は、請求項３の複合床版の継手
部の一実施例における継手部（形鋼２と平行する方向の
現場継手）の鋼材配置を示したものである。FIG. 7 to FIG. 9 show the steel material arrangement of the joint portion (field joint in the direction parallel to the shaped steel 2) in one embodiment of the joint portion of the composite floor slab of claim 3.
【００５４】現場継手の施工手順としては、まず、接合
される複合床版ａ，ｂを桁上に設置する。現場継手部に
おける複合床版ａ，ｂの底鋼板１には、形鋼２方向に所
定の間隔に１列もしくは複数列のボルト孔４１を設けて
おく。また、形鋼２には、適当な間隔で縦リブ４２を設
け、この縦リブ４２には、適当な位置にボルト孔４３を
設けておく。As a construction procedure of the on-site joint, first, the composite floor slabs a and b to be joined are installed on the girder. The bottom steel plate 1 of the composite floor slabs a and b at the site joint is provided with one or more rows of bolt holes 41 at predetermined intervals in the direction of the shaped steel 2. Further, the shaped steel 2 is provided with vertical ribs 42 at appropriate intervals, and the vertical ribs 42 are provided with bolt holes 43 at appropriate positions.
【００５５】床版の底鋼板１は、上側添接板４４と下側
添接板４５及び高力ボルトにより摩擦接合される。底鋼
板用上側添接板４４には、形鋼方向に所定の間隔で１列
もしくは複数列のボルト孔４５を設けられ、ボルト孔４
６を有する形鋼直角方向の仕切り鋼板４７と、この仕切
り鋼板４７上のフランジ鋼板４８が一体化されている。The bottom steel plate 1 of the floor slab is frictionally joined by the upper attachment plate 44, the lower attachment plate 45 and the high-strength bolt. The upper attachment plate 44 for the bottom steel plate is provided with one or more rows of bolt holes 45 at predetermined intervals in the direction of the shaped steel.
A partition steel plate 47 having a shape steel 6 in the right-angled direction and a flange steel plate 48 on the partition steel plate 47 are integrated.
【００５６】仕切り鋼板４７の長さは隣り合う複合床版
ａ，ｂの形鋼２に設けられた縦リブ４２どうしの間隔
と、また、フランジ鋼板４８の長さは隣り合う複合床版
ａ，ｂに設けられた形鋼２の上フランジどうしの間隔と
概ね致する。The length of the partition steel plate 47 is the distance between the vertical ribs 42 provided on the shaped steels 2 of the adjacent composite floor slabs a and b, and the length of the flange steel plate 48 is the length of the adjacent composite slabs a and b. It almost coincides with the interval between the upper flanges of the shaped steel 2 provided in b.
【００５７】形鋼直角方向の仕切り鋼板４７と形鋼２に
設けられた縦リブ４２間は両面から当てた添接板４９と
高力ボルトにより摩擦接合する。次に、形鋼２及び仕切
り鋼板４７のフランジ鋼板４８上に連結鋼板３を現場溶
接して、床版の構成部材を連結する。その後、底鋼板１
と連結鋼板３の間の中空部に充填材が充填され、現場継
手が完成する。The partition steel plates 47 extending in the right angle direction of the shaped steel and the vertical ribs 42 provided on the shaped steel 2 are frictionally joined to a contact plate 49 applied from both sides with high-strength bolts. Next, the connecting steel plate 3 is field-welded on the shaped steel 2 and the flange steel plate 48 of the partition steel plate 47 to connect the constituent members of the floor slab. After that, bottom steel plate 1
The filler is filled in the hollow portion between the connection steel plate 3 and the connection steel plate 3, and the field joint is completed.
【００５８】底鋼板１に形鋼方向の補剛材が必要となる
場合には、図１０、図１１に示すように、上側添接板４
４に補剛材５０を溶接しておくことにより、床版本体部
と同等の補剛が可能となる。この例では補剛材としてＴ
形鋼を用いている。また、必要に応じて連結鋼板３にも
補剛材５１を結合しておく。When the bottom steel plate 1 requires a stiffening member in the direction of the shaped steel, as shown in FIGS.
By welding the stiffening member 50 to 4, it is possible to perform stiffening equivalent to that of the floor slab body. In this example, T is used as a stiffener.
Shaped steel is used. Further, the stiffening member 51 is also joined to the connecting steel plate 3 if necessary.
【００５９】[0059]
【発明の効果】 構成部材が少なく工場製作の合理化が図れる。[Effects of the Invention] The number of constituent members is small and the factory production can be rationalized.
【００６０】 鋼製部材の製作及び充填材の充填を工
場で行うことが可能であり、架設現場における作業の効
率化が図れる。It is possible to manufacture the steel member and fill the filling material in the factory, and it is possible to improve the efficiency of the work at the erection site.
【００６１】 充填材は主構造をなす構造部材として
考慮されていないため、繰り返し荷重による充填材のひ
び割れ等が生じても耐荷力の劣化はなく、耐久性が高
い。Since the filler is not considered as a structural member forming the main structure, even if the filler is cracked by repeated load, the load resistance does not deteriorate and the durability is high.
【００６２】 コンクリートの打設の際、型枠の組立
てや配筋作業が不要であるため、現場作業の省力化と工
期短縮が可能である。When pouring concrete, assembling of the formwork and arranging work are not required, so that it is possible to save labor in the field work and shorten the construction period.
【００６３】 請求項２の施工方法によれば、運搬・
架設する段階では重量が小さく、取扱いが容易であり、
超流動コンクリートを架設後に現場で打設することによ
り、確実かつ容易にコンクリートを充填することができ
る。According to the construction method of claim 2,
At the stage of erection, the weight is small and it is easy to handle,
By placing superfluid concrete on site after it has been erected, the concrete can be filled reliably and easily.
【００６４】 請求項３、４の継手部の構造を採用す
ることで、形鋼直角方向の剛性及び強度が、本体と同等
の現場継手が可能となる。また、形鋼直角方向の仕切り
鋼板等により充填区間を分割することも可能である。By adopting the structure of the joint portion according to claims 3 and 4, it is possible to realize a field joint having rigidity and strength in the direction perpendicular to the shaped steel that is equivalent to that of the main body. Further, it is also possible to divide the filling section by a partition steel plate or the like in the direction perpendicular to the shaped steel.
【図１】 請求項１の複合床版の一実施例を示す斜視図
である。FIG. 1 is a perspective view showing an embodiment of a composite floor slab of claim 1.
【図２】 請求項１の複合床版と橋梁主桁との接合構造
の一例を示す鉛直断面図である。FIG. 2 is a vertical cross-sectional view showing an example of a joint structure between the composite floor slab of claim 1 and a bridge main girder.
【図３】 請求項１の複合床版の橋軸直角方向の継手の
一例を示す斜視図である。FIG. 3 is a perspective view showing an example of a joint of the composite floor slab of claim 1 in a direction perpendicular to the bridge axis.
【図４】 請求項１の複合床版の橋軸直角方向の継手の
他の例を示す斜視図である。FIG. 4 is a perspective view showing another example of the joint of the composite floor slab of claim 1 in the direction perpendicular to the bridge axis.
【図５】 請求項１の複合床版の橋軸方向の継手の一例
を示す鉛直断面図である。FIG. 5 is a vertical sectional view showing an example of a joint in the bridge axis direction of the composite floor slab of claim 1.
【図６】 請求項２の複合床版の施工方法の一実施例に
おける施工方法の概要を示す斜視図である。FIG. 6 is a perspective view showing an outline of a construction method in an embodiment of the construction method of the composite floor slab of claim 2.
【図７】 請求項３の複合床版の継手部（橋軸直角方
向）の一実施例における継手部の鋼材配置を示す分解斜
視図である。FIG. 7 is an exploded perspective view showing a steel material arrangement of a joint portion in an embodiment of the joint portion (in the direction perpendicular to the bridge axis) of the composite floor slab of claim 3.
【図８】 図７の実施例に対応する橋軸方向の鉛直断面
図である。8 is a vertical cross-sectional view in the bridge axis direction corresponding to the embodiment of FIG.
【図９】 図８のＡ−Ａ断面図である。9 is a cross-sectional view taken along the line AA of FIG.
【図１０】 請求項４の複合床版の継手部の一実施例に
おける橋軸方向の鉛直断面図である。FIG. 10 is a vertical cross-sectional view in the bridge axis direction in an example of the joint portion of the composite floor slab of claim 4.
【図１１】 図１０のＢ−Ｂ断面図である。11 is a sectional view taken along line BB of FIG.
【図１２】 従来のＲＣ床版の一例を示す鉛直断面図で
ある。FIG. 12 is a vertical sectional view showing an example of a conventional RC floor slab.
【図１３】 従来の鋼床版の一例を示す鉛直断面図であ
る。FIG. 13 is a vertical cross-sectional view showing an example of a conventional steel deck.
【図１４】 従来の合成床版の一例を示す鉛直断面図で
ある。FIG. 14 is a vertical cross-sectional view showing an example of a conventional synthetic floor slab.
１…底鋼板、２…形鋼、３…連結鋼板、４…充填材、５
…取付穴、６…主桁、７…型枠、８…無収縮モルタル、
９…ずれ止め、１０…ゴム片、１１…溶接、１２…ボル
ト、１３…連結板、１４…ボルト、１５…鉄筋、１６…
コンクリート、１７…鋼板、１８…縦リブ、１９…横リ
ブ、２０…底鋼板、２１…コンクリート、２２…ずれ止
め、２３…鉄筋、３１…仕切壁、３２…打設孔、３３…
空気抜き孔、３４…カラー、ａ，ｂ…複合床版、４１…
ボルト孔、４２…縦リブ、４３…ボルト孔、４４…上側
添接板、４５…下側添接板、４６…ボルト孔、４７…仕
切り鋼板、４８…フランジ鋼板、４９…添接板、５０…
補剛材、５１…補剛材1 ... Bottom steel plate, 2 ... Shaped steel, 3 ... Connection steel plate, 4 ... Filler material, 5
… Mounting holes, 6… Main girder, 7… Form, 8… No shrinkage mortar,
9 ... Locking stopper, 10 ... Rubber piece, 11 ... Welding, 12 ... Bolt, 13 ... Connecting plate, 14 ... Bolt, 15 ... Reinforcing bar, 16 ...
Concrete, 17 ... Steel plate, 18 ... Vertical ribs, 19 ... Horizontal ribs, 20 ... Bottom steel plate, 21 ... Concrete, 22 ... Shift stopper, 23 ... Reinforcing bar, 31 ... Partition wall, 32 ... Casting hole, 33 ...
Air vent hole, 34 ... Collar, a, b ... Composite floor slab, 41 ...
Bolt hole, 42 ... Vertical rib, 43 ... Bolt hole, 44 ... Upper attachment plate, 45 ... Lower attachment plate, 46 ... Bolt hole, 47 ... Partition steel plate, 48 ... Flange steel plate, 49 ... Adhesion plate, 50 …
Stiffeners, 51 ... Stiffeners
Claims (4)
で並列配置した複数本の形鋼と、隣接する前記形鋼間に
架け渡した連結鋼板とで、前記底鋼板と連結鋼板との間
に中空部を形成し、前記中空部内に補強材または補剛材
としての充填材を充填したことを特徴とする複合床版。1. A bottom steel plate and a connection steel plate, comprising a bottom steel plate, a plurality of shape steels arranged in parallel on the upper surface of the bottom steel plate at required intervals, and a connection steel plate bridged between adjacent shape steels. A composite floor slab, wherein a hollow portion is formed between the hollow portions, and a filling material as a reinforcing material or a stiffening material is filled in the hollow portion.
で並列配置した複数本の形鋼と、隣接する前記形鋼間に
架け渡した連結鋼板とで、前記底鋼板と連結鋼板との間
に中空部を形成した鋼殻を所定位置に架設した後、前記
中空部に超流動コンクリートを充填することを特徴とす
る請求項１記載の複合床版の施工方法。2. A bottom steel plate and a connection steel plate, comprising a bottom steel plate, a plurality of shape steels arranged in parallel on the upper surface of the bottom steel plate at required intervals, and a connection steel plate bridged between the adjacent shape steels. The method for constructing a composite floor slab according to claim 1, wherein a steel shell having a hollow portion formed between is erected at a predetermined position, and then the hollow portion is filled with superfluid concrete.
行する方向の継手部であって、隣り合う複合床版の底鋼
板どうしを、前記形鋼方向に連続する底鋼板用下側添接
板と底鋼板用上側添接板とで挟み込んで高力ボルト摩擦
接合により接合し、前記底鋼板用上側添接板には上端に
フランジ鋼板を有する形鋼直角方向の仕切り鋼板が一体
化され、前記仕切り鋼板と前記形鋼に設けた縦リブ間を
両面から添接板を当てて高力ボルト摩擦接合し、前記形
鋼及び仕切り鋼板のフランジ上に連結鋼板を溶接し、前
記底鋼板と連結鋼板間の中空部に充填材を充填してなる
ことを特徴とする複合床版の継手部。3. A joint portion of a composite floor slab according to claim 1 in a direction parallel to the section steel, wherein bottom steel sheets of adjacent composite floor slabs are connected to each other in the section steel direction. It is sandwiched between the side attachment plate and the bottom steel plate upper attachment plate and joined by high-strength bolt friction welding, and the bottom steel plate upper attachment plate is integrally formed with a section steel plate with a flange steel plate at the upper end in the right angle direction. The partition steel plate and the vertical ribs provided on the shaped steel are applied with high-strength bolt friction welding by applying a splicing plate from both sides, and a connecting steel plate is welded on the flanges of the shaped steel and the partition steel plate, and the bottom is formed. A joint part for a composite floor slab, characterized in that a filler is filled in a hollow portion between the steel plate and the connecting steel plate.
を一体化してある請求項３記載の複合床版の継手部。4. The joint part for a composite floor slab according to claim 3, wherein a stiffening material in the direction of the shaped steel is integrated with the upper contact plate for the bottom steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17561594A JP3191569B2 (en) | 1993-07-28 | 1994-07-27 | Composite slab, method of construction, and joint of composite slab |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5-186486 | 1993-07-28 | ||
| JP18648693 | 1993-07-28 | ||
| JP17561594A JP3191569B2 (en) | 1993-07-28 | 1994-07-27 | Composite slab, method of construction, and joint of composite slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0790970A true JPH0790970A (en) | 1995-04-04 |
| JP3191569B2 JP3191569B2 (en) | 2001-07-23 |
Family
ID=26496828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17561594A Expired - Fee Related JP3191569B2 (en) | 1993-07-28 | 1994-07-27 | Composite slab, method of construction, and joint of composite slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3191569B2 (en) |
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| JPH11324199A (en) * | 1998-05-21 | 1999-11-26 | Sumitomo Metal Ind Ltd | Bottom steel plate connecting method for composite slab panel |
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| JP2001081724A (en) * | 1999-09-13 | 2001-03-27 | Nippon Steel Corp | Joint structure of composite floor slab |
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