JPH11350425A - Composite column base structure and its constructing method - Google Patents
Composite column base structure and its constructing methodInfo
- Publication number
- JPH11350425A JPH11350425A JP10163578A JP16357898A JPH11350425A JP H11350425 A JPH11350425 A JP H11350425A JP 10163578 A JP10163578 A JP 10163578A JP 16357898 A JP16357898 A JP 16357898A JP H11350425 A JPH11350425 A JP H11350425A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- steel shell
- bag
- filled
- column
- 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.)
- Withdrawn
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000004567 concrete Substances 0.000 claims abstract description 45
- 239000000945 filler Substances 0.000 claims abstract description 41
- 239000011381 foam concrete Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 13
- 239000004576 sand Substances 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000009415 formwork Methods 0.000 description 14
- 239000011150 reinforced concrete Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、橋梁用の橋脚や主
塔、あるいは他の構造物における支柱等として用いられ
る複合柱脚構造物およびその構築方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite column base structure used as a pier or main tower for a bridge, or a column in other structures, and a method of constructing the same.
【０００２】[0002]
【従来の技術】各種構造物の柱脚としては、従来から鉄
筋コンクリート構造、あるいは鋼管等を用いた鋼構造な
どが用いられている。2. Description of the Related Art Conventionally, a reinforced concrete structure or a steel structure using a steel pipe or the like has been used as a column base of various structures.
【０００３】鉄筋コンクリート構造は、一般的には経済
性に優れ、特に、柱脚の規模が大きい場合には多用され
る構造である。鉄筋コンクリート構造の柱脚を構築する
場合、基礎上に配筋される主筋に横筋を組み合わせて鉄
筋を施工し、これの外周に型枠を配置し、コンクリート
を打設する方法が採られている。また、柱脚の高さが高
い場合には、柱脚自体の重量増加により地震時の作用力
が増加するので、中空断面とするのが好ましい。中空断
面とする場合には、外周の型枠と共に内型枠を設置し、
コンクリートを打設する方法が採られている。[0003] A reinforced concrete structure is generally excellent in economical efficiency, and is a structure frequently used especially when the size of a column base is large. When a column base of a reinforced concrete structure is constructed, a method has been adopted in which a reinforcing bar is constructed by combining a horizontal bar with a main reinforcing bar arranged on a foundation, a formwork is arranged on the outer periphery of the reinforcing bar, and concrete is poured. When the height of the column base is high, the acting force at the time of an earthquake increases due to an increase in the weight of the column base itself. In the case of a hollow cross section, an inner formwork is installed together with the outer formwork,
The method of casting concrete is adopted.
【０００４】一方、施工性に優れ、経済的な柱脚構造物
として、特開平５−２６３４０４号公報に記載の柱脚構
造体がある。この構造体は、幅方向の両側に折曲形成さ
れたフランジに多数のボルト締結孔を設けた単位溝型鋼
枠を千鳥状に配設し、フランジ同士をボルト締結するこ
とで筒状の柱状体を構築し、この柱状体の内部にコンク
リートを充填して構成される。この構造によれば、機械
的強度が高く、耐候性に優れた柱脚を容易かつ低廉な費
用で構築することができるとされている。On the other hand, as a column base structure which is excellent in workability and is economical, there is a column base structure described in JP-A-5-263404. This structure is a cylindrical columnar body that is arranged in a zigzag with unit grooved steel frames provided with a number of bolt fastening holes in flanges that are bent at both sides in the width direction, and the flanges are bolted together. Is constructed, and concrete is filled inside the columnar body. According to this structure, a column base having high mechanical strength and excellent weather resistance can be easily and inexpensively constructed.
【０００５】また、この柱脚構造体では、前記柱状体の
内部へのコンクリート充填形態として、次の形態が示さ
れている。 柱状体内にコンクリートを中実状態で充填する。 柱状体内にコンクリートを円筒状に充填する（中空
状態）。 柱状体の中に中央鋼管柱を配置し、柱状体と中央鋼
管柱との間にコンクリートを充填する。[0005] In this column base structure, the following forms are shown as the form of filling concrete into the inside of the column. Fill the columnar body with solid concrete. The column is filled with concrete in a cylindrical shape (hollow state). A central steel column is placed in the column, and concrete is filled between the column and the central steel column.
【０００６】の充填形態は、特に経済性が要求される
と共に、比較的高さの低い柱状体において採用すると有
利であるとされている。の実施形態では、載荷力に比
べて柱状体が軽くなるので有利であり、かつ充填するコ
ンクリートの量が少なくて済み経済性が高いとされてい
る。の実施形態は、高い載荷力に加えて、曲げや捩じ
りに対する抵抗力が高く、また充填するコンクリートの
量が少なくて済み経済性が高いとされている。[0006] The filling form is particularly demanded in terms of economy, and is considered to be advantageous when employed in a column having a relatively low height. According to the embodiment, the columnar body is lighter than the loading force, which is advantageous, and the amount of concrete to be filled is small, and the economic efficiency is high. According to the embodiment, in addition to the high loading force, the resistance to bending and torsion is high, the amount of concrete to be filled is small, and the cost is high.
【０００７】[0007]
【発明が解決しようとする課題】前述した従来の鉄筋コ
ンクリート構造の場合、柱脚を構築するに際して、型枠
およびこれを支える支保工の設置が不可欠となる他、鉄
筋の組立作業、型枠の組立および解体等の手間がかか
り、多数の熟練労務者を必要とする。また、急速施工の
点においても著しく不利であり、建設コストの上昇も避
けられない。In the case of the above-mentioned conventional reinforced concrete structure, it is indispensable to install a formwork and a shoring for supporting the form when constructing the column base, as well as to assemble the reinforcing bar and assemble the formwork. In addition, it takes time and labor to disassemble, and requires a number of skilled workers. In addition, rapid construction is extremely disadvantageous, and an increase in construction costs is inevitable.
【０００８】一方、前述した特開平５−２６３４０４号
公報の柱脚構造体では、構成が簡単で、加工度も低く、
熟練工を必要とせずに、短い作業期間で柱脚を構築する
ことができるものの、次のような問題点を有している。 柱状体の内部に中実状態でコンクリートを充填する
場合、柱脚の自重が大きくなり、地震時の慣性力が大き
くなるため耐震性に劣る。 柱状体の内部に円筒状にコンクリートを充填する場
合、内型枠の施工が必要となり、工期が長くなると共
に、型枠・足場・支保工などの資材が必要となるため不
経済である。 柱状体の中に中央鋼管柱を配置し、柱状体と中央鋼
管柱との間にコンクリートを充填する場合、中央鋼管柱
の費用がかかり不経済である。さらには、コンクリート
の充填時には、充填圧により中央鋼管柱に円周方向の圧
縮力が作用するため、中央鋼管柱は座屈しやすく、これ
避けるためには中央鋼管柱の板厚を増大させる必要があ
り、さらなる工費上昇を招く。On the other hand, the above-mentioned column base structure disclosed in Japanese Patent Application Laid-Open No. 5-263404 has a simple structure and a low workability.
Although a column base can be constructed in a short work period without requiring a skilled worker, it has the following problems. When concrete is filled into a columnar body in a solid state, the weight of the column base increases, and the inertia force during an earthquake increases, resulting in poor seismic resistance. When concrete is cylindrically filled inside the columnar body, the construction of the inner formwork is required, and the construction period is lengthened, and it is uneconomical because materials such as the formwork, scaffolding and support work are required. When the central steel pipe column is arranged in the column and the concrete is filled between the column and the central steel pipe column, the cost of the central steel pipe column is expensive and uneconomical. In addition, when filling concrete, the filling pressure exerts a circumferential compressive force on the central steel column, so the central steel column is likely to buckle.To avoid this, it is necessary to increase the thickness of the central steel column. Yes, further raises construction costs.
【０００９】本発明は、前述のような問題点を解消すべ
くなされたものであり、その目的は、軽量で耐震性に優
れ、かつ施工が容易で施工期間が短くて済み、経済性の
高い鋼・コンクリート複合構造の柱脚構造物およびその
施工方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a light-weight, excellent earthquake-resistant, easy-to-install, short-installation period, and high economical efficiency. An object of the present invention is to provide a column-base structure having a steel-concrete composite structure and a method for constructing the column-base structure.
【００１０】[0010]
【課題を解決するための手段】本発明の複合柱脚構造物
は、基礎上に立設される柱状の鋼殻と、この鋼殻の内部
に鋼殻軸方向に沿って設置される柱状の袋と、この袋の
中に充填される軽量充填材と、この軽量充填材が充填さ
れた袋と鋼殻との間に形成される空間に充填されるコン
クリートとから構成されていることを特徴とする（請求
項１）。A composite column-base structure according to the present invention comprises a column-shaped steel shell erected on a foundation and a column-shaped steel shell installed inside the steel shell along the axial direction of the steel shell. It is characterized by comprising a bag, a lightweight filler filled in the bag, and concrete filled in a space formed between the bag filled with the lightweight filler and the steel shell. (Claim 1).
【００１１】前記複合柱脚構造物において、軽量充填材
には軽量コンクリート、砂、風砕スラグ等を用いること
ができるが、軽量充填材に気泡コンクリートを用いてよ
り軽量化を図る（請求項２）。In the composite column base structure, lightweight concrete, sand, blasted slag, or the like can be used as the lightweight filler, but the weight is further reduced by using cellular concrete as the lightweight filler. ).
【００１２】前記複合柱脚構造物において、幅を必要と
する場合には、幅広の鋼殻内に柱状の袋を複数配設する
ことができるが、幅広の柱脚構造物で剛性や強度を増大
させる場合には、請求項１または請求項２の複合柱脚構
造物を複数並列して立設し、これら複合柱脚構造物同士
を連結部材で連結して多柱式複合柱脚構造物を構成する
（請求項３）。In the above-mentioned composite column base structure, when a width is required, a plurality of columnar bags can be arranged in a wide steel shell, but rigidity and strength can be reduced by the wide column base structure. In the case of increasing the number of composite column base structures, a plurality of composite column base structures according to claim 1 or 2 are erected in parallel, and these composite column base structures are connected to each other by connecting members. (Claim 3).
【００１３】本発明の複合柱脚構造物の構築方法は、基
礎上に柱状の鋼殻を立設する工程と、この鋼殻の内部に
柱状の袋を鋼殻軸方向に沿って設置する工程と、この袋
の内部に軽量充填材を所定の高さまで充填する工程と、
この軽量充填材が充填された袋と鋼殻との間に形成され
る空間にコンクリートを軽量充填材の充填高さまで充填
する工程からなり、前記軽量充填材充填工程と前記コン
クリート充填工程を順次繰り返すことを特徴とする（請
求項４）。According to the method of constructing a composite column base structure of the present invention, a step of erecting a columnar steel shell on a foundation and a step of installing a columnar bag inside the steel shell along the axial direction of the steel shell. And a step of filling the interior of the bag with a lightweight filler to a predetermined height,
A step of filling concrete to a space formed between the bag filled with the lightweight filler and the steel shell to a filling height of the lightweight filler, and sequentially repeating the lightweight filler filling step and the concrete filling step (Chart 4).
【００１４】以上のような構成において、鋼殻とコンク
リートからなる複合柱脚構造物の中央部に軽量充填材に
よる柱が形成されるため、従来の鋼製柱状体内にコンク
リートを中実状態で充填させる場合と比較して、複合柱
脚構造物の軽量化が図られ、作用地震力の低減により耐
震性が向上する。軽量充填材に気泡コンクリートを使用
することにより、より軽量化が図られる。さらに軽量充
填材は柱状の袋に充填すればよいため、従来の中空断面
の鋼・コンクリート複合構造で内型枠や中央鋼管柱を用
いる場合と比較して、コストの低減が図られると共に、
型枠・支保工の組立・解体作業等の必要がなく、施工が
容易となり施工期間が短縮される。In the above structure, since a column made of a lightweight filler is formed at the center of the composite column base structure composed of steel shell and concrete, concrete is filled in a conventional steel columnar body in a solid state. In comparison with the case where the composite column base structure is used, the weight of the composite column base structure is reduced, and the seismic resistance is improved by reducing the acting seismic force. By using cellular concrete as a lightweight filler, further weight reduction can be achieved. Furthermore, since the lightweight filler only needs to be filled in the columnar bag, the cost can be reduced as compared with the case of using the inner formwork and the central steel pipe column in the conventional hollow-section steel-concrete composite structure,
There is no need to perform assembling and dismantling work for formwork and shoring, making construction easy and shortening the construction period.
【００１５】[0015]
【発明の実施の形態】以下、本発明を図示する実施の形
態に基づいて説明する。図１は本発明の複合柱脚構造物
を橋梁用の橋脚に適用した１例であり、図１(a) は柱脚
部分の水平断面図、図１(b) は柱脚構造物全体の縦断面
図である。図２は本発明の複合柱脚構造物の構築方法の
１例を工程順に示した縦断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 shows an example in which the composite column pier structure of the present invention is applied to a bridge pier. FIG. 1 (a) is a horizontal sectional view of a column pier portion, and FIG. 1 (b) is an entire column pier structure. It is a longitudinal cross-sectional view. FIG. 2 is a longitudinal sectional view showing one example of a method of constructing a composite column base structure according to the present invention in the order of steps.
【００１６】図１において、本発明の複合柱脚構造物１
は、円筒状の鋼殻２と、この鋼殻２の内部中央に鋼殻２
の全長に渡って設置される円筒状の袋３と、この袋３の
内部に充填される軽量充填材４と、軽量充填材４が充填
された袋３と鋼殻２との間に形成される空間に充填され
るコンクリート５とから構成されている。In FIG. 1, a composite column base structure 1 of the present invention is shown.
Is a cylindrical steel shell 2 and a steel shell 2
A cylindrical bag 3 installed over the entire length of the bag, a lightweight filler 4 filled in the bag 3, and a bag 3 formed between the bag 3 filled with the lightweight filler 4 and the steel shell 2. And the concrete 5 filled in the space.
【００１７】鋼殻２は、単位長さの鋼管を継ぎ足し溶接
やボルト等で接合して構築するか、円周方向等に複数に
分割された鋼枠を組み合わせ、鋼枠同士を溶接やボルト
等で接合して構築することができる。この鋼殻２は、鉄
筋コンクリート製の基礎６上に設置し、その下部をアン
カー金物などで固定する。The steel shell 2 is constructed by adding steel pipes of unit length and joining them by welding, bolts or the like, or combining steel frames divided into a plurality in the circumferential direction or the like, and welding the steel frames to each other by welding, bolts or the like. And can be constructed by joining. The steel shell 2 is installed on a reinforced concrete foundation 6 and the lower part thereof is fixed with anchor hardware or the like.
【００１８】円筒状の袋３は、軽量充填材の充填により
形が作られればよいため、剛性の低いものでよく、例え
ば充填材が漏出しないような織物等から形成することが
できる。また、袋３は下部に底部が一体的に設けられ、
上部が開口した袋であり、軽量充填材４を充填する際に
位置が移動しないように、下部を適宜の取付金具等で基
礎６上に位置決め固定するのが好ましい。また、袋３の
上部も、鋼殻２の上端に設けた支持板などに取付金具等
で位置決め固定し、軽量充填材４の充填に際し、袋３の
上部が落下しないようにする。The cylindrical bag 3 only needs to be formed by filling with a lightweight filler, so that it may have low rigidity, and can be formed of, for example, a woven fabric or the like from which the filler does not leak. In addition, the bag 3 is provided integrally with a bottom portion at a lower portion,
It is a bag whose upper part is open, and it is preferable that the lower part is positioned and fixed on the foundation 6 with a suitable fitting or the like so that the position does not move when the lightweight filler 4 is filled. In addition, the upper part of the bag 3 is also positioned and fixed to a support plate or the like provided at the upper end of the steel shell 2 with a mounting bracket or the like so that the upper part of the bag 3 does not drop when the lightweight filler 4 is filled.
【００１９】軽量充填材４は、コンクリートよりも比重
の小さい材料であり、軽量コンクリートや砂など、袋３
の形状を保持できる軽量のものであればよく、その材料
は限定されない。また、この軽量充填材４は、高い機械
的強度は要求されない。一例として気泡コンクリートを
軽量充填材４に使用すれば、著しく柱脚の軽量化が図ら
れる。別の例として、風砕スラグを軽量充填材４として
使用すれば、軽量化を図れると共に、極めて安価に柱脚
を構築することができる。The lightweight filler 4 is a material having a specific gravity smaller than that of concrete, such as lightweight concrete or sand.
Any material may be used as long as it can hold the shape described above, and the material is not limited. Further, the lightweight filler 4 does not require high mechanical strength. If cellular concrete is used as the lightweight filler 4 as an example, the weight of the column base can be significantly reduced. As another example, if the crushed slag is used as the lightweight filler 4, the weight can be reduced and the column pedestal can be constructed extremely inexpensively.
【００２０】以上のような構成において、次のような手
順で複合柱脚構造物１を構築する（図２参照）。 (1) 柱脚を支持する鉄筋コンクリート製の基礎６を構築
し、この基礎６の上に鋼管の継ぎ足しや分割した鋼枠の
組み合わせ等により鋼殻２を全長に渡って構築し、下部
を基礎６に固定する。 (2) 鋼殻２の内部中央に円筒状の袋３を設置し、下部を
基礎６上に固定し、上部を鋼殻２に支持させる。 (3) 円筒状の袋３の上部開口から軽量充填材４を投入
し、所定の高さまで充填する。 (4) 鋼殻２と袋３の間に形成された空間にコンクリート
５を投入し、軽量充填材４の充填高さまで充填する。 (5) 前記(3) の軽量充填材４の充填工程と前記(4) のコ
ンクリート５の充填工程を順次繰り返すことにより、鋼
殻２の上端まで軽量充填材４とコンクリート５を充填す
る。以上により、複合柱脚構造物１の構築が終了する。
なお、構築された複合柱脚構造物１の上部には上部工が
設置される。In the above configuration, the composite column base structure 1 is constructed in the following procedure (see FIG. 2). (1) A foundation 6 made of reinforced concrete for supporting a column base is constructed, and a steel shell 2 is constructed on the foundation 6 by adding steel pipes and combining divided steel frames over the entire length. Fixed to. (2) A cylindrical bag 3 is placed in the center of the inside of the steel shell 2, the lower part is fixed on the foundation 6, and the upper part is supported by the steel shell 2. (3) A lightweight filler 4 is charged from the upper opening of the cylindrical bag 3 and filled to a predetermined height. (4) Concrete 5 is put into the space formed between the steel shell 2 and the bag 3 and filled up to the filling height of the lightweight filler 4. (5) The lightweight filler 4 and the concrete 5 are filled up to the upper end of the steel shell 2 by sequentially repeating the step (3) of filling the lightweight filler 4 and the step (4) of filling the concrete 5. Thus, the construction of the composite column base structure 1 is completed.
In addition, a superstructure is installed on the upper part of the constructed composite column base structure 1.
【００２１】なお、以上の実施例では、円筒状の鋼殻２
と袋３の例を示したが、これに限定されることなく、鋼
殻２と袋３の形状を角筒状などとすることもできる。In the above embodiment, the cylindrical steel shell 2
Although the example of the bag 3 has been described, the shape of the steel shell 2 and the bag 3 may be square tube or the like without being limited thereto.
【００２２】軽量充填材４を充填する目的は、袋３の形
状保持であり、袋３の形状を保持しつつ鋼殻２と袋３の
間の空間にコンクリート５を充填することで、コンクリ
ート５の使用量を大幅に減少させることができる。結果
として、鋼殻２全体にコンクリート５を充填する場合に
比べて柱脚の自重を小さくできる。地震時の慣性力が小
さく、耐震性を向上させることができる。The purpose of filling the lightweight filler 4 is to maintain the shape of the bag 3. By filling the space between the steel shell 2 and the bag 3 with the concrete 5 while maintaining the shape of the bag 3, the concrete 5 is filled. Can be greatly reduced. As a result, the self-weight of the column base can be reduced as compared with the case where the concrete 5 is filled in the entire steel shell 2. The inertial force during an earthquake is small, and the earthquake resistance can be improved.
【００２３】鋼殻２全体にコンクリート５を充填する場
合には、柱脚水平断面の中央付近は作用モーメントに対
する抵抗力が小さいため、この部分のコンクリート５が
無駄であると共に、重量増加によって地震時の作用力が
増加する原因ともなる。このため、柱脚を中空断面とす
るのが望ましいが、コンクリート５を中空状態に充填す
るためには、内型枠や中央鋼管柱が必要となる。内型枠
を施工するには手間がかり、建設コストがかかり、また
中央鋼管柱の場合にも、コストの上昇を招くことは既に
述べた通りである。これに対して、本発明の複合柱脚構
造物は、内型枠や中央鋼管柱を用いることなく、軽量の
柱脚構造物を安価に短期間で構築することができる点で
優れている。When the entire steel shell 2 is filled with concrete 5, since the resistance to the acting moment is small near the center of the horizontal section of the column base, the concrete 5 in this part is wasted, and the weight increases during the earthquake. It also causes an increase in the action force. For this reason, it is desirable that the column base has a hollow cross section, but in order to fill the concrete 5 into a hollow state, an inner formwork and a central steel pipe column are required. As described above, it takes a lot of time and labor to construct the inner formwork, and the cost increases even in the case of the central steel pipe column. On the other hand, the composite column-base structure of the present invention is excellent in that a lightweight column-base structure can be constructed inexpensively in a short period of time without using an inner formwork or a central steel pipe column.
【００２４】図３は、角形断面の角筒状鋼殻１２を用
い、この内部に袋３を複数配設し、それぞれの袋３の内
部に軽量充填材４を充填すると共に、鋼殻１２と袋３の
間に形成される空間にコンクリート５を充填して複合柱
脚構造物１１を形成する例であり、橋脚の橋軸直角方向
の幅が広い場合などに適用される。この場合も、図２と
同様の施工方法で構築する。得られる効果は前述した複
合柱脚構造物１の場合と同じである。FIG. 3 shows a case in which a plurality of bags 3 are disposed inside a rectangular cylindrical steel shell 12 having a square cross section, and the inside of each bag 3 is filled with a lightweight filler 4. This is an example in which the space formed between the bags 3 is filled with the concrete 5 to form the composite column-base structure 11, and is applied when the width of the pier in the direction perpendicular to the bridge axis is wide. Also in this case, the construction is performed by the same construction method as that of FIG. The obtained effect is the same as that of the composite column structure 1 described above.
【００２５】図４は、２本の複合橋脚構造物１、１を橋
軸直角方向に間隔をおいて配置し、円筒状の鋼殻２、２
同士を連結部材２２で一体的に連結し、多柱式複合柱脚
構造物２１を形成する例である。多柱構造とすること
で、道路の幅から決まる橋軸直角方向の必要幅を確保し
ながら、剛性や強度を増加させることができる。FIG. 4 shows that two composite pier structures 1, 1 are arranged at an interval in the direction perpendicular to the bridge axis, and the cylindrical steel shells 2, 2 are arranged.
This is an example in which the members are integrally connected by a connecting member 22 to form a multi-post composite column base structure 21. With the multi-column structure, rigidity and strength can be increased while securing the required width in the direction perpendicular to the bridge axis determined by the width of the road.
【００２６】なお、以上は橋脚に適用した例を示した
が、これに限らず、斜張橋の主塔、その他の構造物の支
柱等にも本発明を適用できることはいうまでもない。Although the above description has been made of an example in which the present invention is applied to a bridge pier, the present invention is not limited to this, and it goes without saying that the present invention can be applied to a main tower of a cable-stayed bridge, a column of other structures, and the like.
【００２７】[0027]
【発明の効果】本発明は、基礎上に立設される柱状の鋼
殻の内部に柱状の袋を鋼殻軸方向に沿って設置し、この
袋の中に軽量充填材を充填した後、袋と鋼殻との間に形
成される空間に充填されるコンクリートを打設するよう
にしたため、次のような効果を奏することができる。 (1) 鋼殻とコンクリートからなる複合柱脚構造物の中央
部に軽量充填材による柱が形成されるため、従来の鋼製
柱状体内にコンクリートを中実状態で充填させる場合と
比較して、複合柱脚構造物の軽量化を図ることができ、
作用地震力を低減して耐震性を向上させることができ
る。 (2) 軽量充填材は柱状の袋に充填すればよいため、従来
の中空断面の鋼・コンクリート複合構造で内型枠や中央
鋼管柱を用いる場合と比較して、コストの低減を図るこ
とができ、また型枠・支保工の組立・解体作業等の必要
がなく、施工が容易となり、施工期間を短縮することが
できる。According to the present invention, a pillar-shaped bag is installed along the axial direction of a steel shell inside a pillar-shaped steel shell erected on a foundation, and a lightweight filler is filled in the bag. Since the concrete filled in the space formed between the bag and the steel shell is cast, the following effects can be obtained. (1) Since a column made of lightweight filler is formed at the center of the composite column base structure consisting of steel shell and concrete, compared to the case where concrete is filled in a conventional steel columnar body in a solid state, It is possible to reduce the weight of the composite column base structure,
The seismic force can be improved by reducing the acting seismic force. (2) Since the lightweight filler only needs to be filled in a columnar bag, cost can be reduced compared to the case of using a conventional steel-concrete composite structure with a hollow section and an inner formwork or a central steel pipe column. Also, there is no need for assembling and dismantling work of the formwork and the shoring work, so that the construction is easy and the construction period can be shortened.
【図１】本発明の複合柱脚構造物を橋梁用の橋脚に適用
した１例であり、(a) は柱脚部分の水平断面図、(b) は
柱脚構造物全体の縦断面図である。FIG. 1 is an example in which a composite column-base structure of the present invention is applied to a bridge pier, (a) is a horizontal cross-sectional view of a column-base portion, and (b) is a vertical cross-sectional view of the entire column-base structure. It is.
【図２】本発明の複合柱脚構造物の構築方法の１例を工
程順に示した縦断面図である。FIG. 2 is a longitudinal sectional view showing an example of a method of constructing a composite column base structure according to the present invention in the order of steps.
【図３】本発明の鋼殻内部に袋を複数配設した複合柱脚
構造物の１例を示す水平断面図である。FIG. 3 is a horizontal sectional view showing an example of a composite column base structure having a plurality of bags disposed inside a steel shell according to the present invention.
【図４】本発明の複合柱脚構造物間を連結部材で連結し
た多柱式複合柱脚構造物の１例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing one example of a multi-post composite column base structure in which the composite column base structures of the present invention are connected by a connecting member.
１…複合柱脚構造物 ２…鋼殻 ３…袋 ４…軽量充填材 ５…コンクリート ６…基礎 １１…複合柱脚構造物 １２…角筒状の鋼殻 ２１…多柱式複合柱脚構造物 ２２…連結部材 DESCRIPTION OF SYMBOLS 1 ... Composite column base structure 2 ... Steel shell 3 ... Bag 4 ... Lightweight filler 5 ... Concrete 6 ... Foundation 11 ... Composite column base structure 12 ... Square cylindrical steel shell 21 ... Multi-column composite column base structure 22 ... connecting member
Claims (4)
鋼殻の内部に鋼殻軸方向に沿って設置される柱状の袋
と、この袋の中に充填される軽量充填材と、この軽量充
填材が充填された袋と鋼殻との間に形成される空間に充
填されるコンクリートとから構成されていることを特徴
とする複合柱脚構造物。1. A pillar-shaped steel shell erected on a foundation, a pillar-shaped bag installed inside the steel shell along the axial direction of the steel shell, and a lightweight filler filled in the bag. And a concrete filled in a space formed between the bag filled with the lightweight filler and the steel shell.
とを特徴とする請求項１に記載の複合柱脚構造物。2. The composite column structure according to claim 1, wherein the lightweight filler is cellular concrete.
脚構造物を複数並列して立設し、これら複合柱脚構造物
同士を連結部材で連結してなることを特徴とする多柱式
複合柱脚構造物。3. A multi-column structure comprising a plurality of the column base structures according to claim 1 or 2 erected in parallel, and the composite column base structures are connected by a connecting member. Column type composite column base structure.
この鋼殻の内部に柱状の袋を鋼殻軸方向に沿って設置す
る工程と、この袋の内部に軽量充填材を所定の高さまで
充填する工程と、この軽量充填材が充填された袋と鋼殻
との間に形成される空間にコンクリートを軽量充填材の
充填高さまで充填する工程からなり、前記軽量充填材充
填工程と前記コンクリート充填工程を順次繰り返すこと
を特徴とする複合柱脚構造物の構築方法。4. A step of erecting a columnar steel shell on a foundation;
A step of installing a columnar bag inside the steel shell along the axial direction of the steel shell, a step of filling the inside of the bag with a lightweight filler to a predetermined height, and a bag filled with the lightweight filler. A step of filling concrete into a space defined between the steel shell and the filling height of the lightweight filler, wherein the lightweight filler filling step and the concrete filling step are sequentially repeated. How to build.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10163578A JPH11350425A (en) | 1998-06-11 | 1998-06-11 | Composite column base structure and its constructing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10163578A JPH11350425A (en) | 1998-06-11 | 1998-06-11 | Composite column base structure and its constructing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11350425A true JPH11350425A (en) | 1999-12-21 |
Family
ID=15776581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10163578A Withdrawn JPH11350425A (en) | 1998-06-11 | 1998-06-11 | Composite column base structure and its constructing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11350425A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146636A (en) * | 2006-10-31 | 2007-06-14 | Toyo Constr Co Ltd | Construction method of concrete structure |
| CN104018515A (en) * | 2014-06-13 | 2014-09-03 | 江苏省电力设计院 | Transmission line assembly type steel structure sandbox gravity type foundation in desert areas |
| CN104594186A (en) * | 2015-01-27 | 2015-05-06 | 清华大学 | Concrete structure reinforced by round FRP (fiber-reinforced plastic) confined concrete cores |
| CN106320165A (en) * | 2016-09-08 | 2017-01-11 | 重庆大学 | Prefabricated concrete-filled steel tube overlapped pier |
| CN106869158A (en) * | 2017-01-10 | 2017-06-20 | 中国电力技术装备有限公司郑州电力设计院 | A kind of transmission line of electricity assembled rubble core gravity foundation and its construction method |
| CN108547214A (en) * | 2018-04-18 | 2018-09-18 | 交通运输部公路科学研究所 | A kind of pre-constructed unit packaged type bridges anti-collision facility based on sand liquefaction damping |
| CN114164762A (en) * | 2021-09-28 | 2022-03-11 | 青岛市市政工程设计研究院有限责任公司 | Novel integral prefabricating process for paving bridge sidewalk |
-
1998
- 1998-06-11 JP JP10163578A patent/JPH11350425A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146636A (en) * | 2006-10-31 | 2007-06-14 | Toyo Constr Co Ltd | Construction method of concrete structure |
| CN104018515A (en) * | 2014-06-13 | 2014-09-03 | 江苏省电力设计院 | Transmission line assembly type steel structure sandbox gravity type foundation in desert areas |
| CN104594186A (en) * | 2015-01-27 | 2015-05-06 | 清华大学 | Concrete structure reinforced by round FRP (fiber-reinforced plastic) confined concrete cores |
| CN106320165A (en) * | 2016-09-08 | 2017-01-11 | 重庆大学 | Prefabricated concrete-filled steel tube overlapped pier |
| CN106869158A (en) * | 2017-01-10 | 2017-06-20 | 中国电力技术装备有限公司郑州电力设计院 | A kind of transmission line of electricity assembled rubble core gravity foundation and its construction method |
| CN108547214A (en) * | 2018-04-18 | 2018-09-18 | 交通运输部公路科学研究所 | A kind of pre-constructed unit packaged type bridges anti-collision facility based on sand liquefaction damping |
| CN108547214B (en) * | 2018-04-18 | 2019-08-09 | 交通运输部公路科学研究所 | A kind of pre-constructed unit packaged type bridges anti-collision facility based on sand liquefaction damping |
| CN114164762A (en) * | 2021-09-28 | 2022-03-11 | 青岛市市政工程设计研究院有限责任公司 | Novel integral prefabricating process for paving bridge sidewalk |
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