JPH04315620A - Foundation structure for steel-framed building - Google Patents
Foundation structure for steel-framed buildingInfo
- Publication number
- JPH04315620A JPH04315620A JP8368991A JP8368991A JPH04315620A JP H04315620 A JPH04315620 A JP H04315620A JP 8368991 A JP8368991 A JP 8368991A JP 8368991 A JP8368991 A JP 8368991A JP H04315620 A JPH04315620 A JP H04315620A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- water
- underground
- foundation
- footing
- 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- Withdrawn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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000004567 concrete Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 10
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 238000009415 formwork Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、鉄骨造建築物の基礎構
造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the basic structure of steel-framed buildings.
【０００２】0002
【従来の技術】従来から鉄骨造建築物の基礎は、現場で
鉄筋、型枠を組んでこの型枠内にコンクリートを流し込
んで鉄筋コンクリート製の地中梁やフーチングとして造
成されるのが一般的である。この基礎構造は、鉄筋コン
クリート製の基礎であるため、ブレキャストの製品を設
置するには重量が大きく不可能であるために現場で造成
するしか方法がなかった。このため、基礎を造成するた
めに鉄筋工、型枠工など多くの職人が必要であるのみな
らず、基礎工事に長い工期がかかっていた。[Prior Art] Traditionally, the foundations of steel-framed buildings have generally been constructed as underground beams or footings made of reinforced concrete by assembling reinforcing bars and formwork on site and pouring concrete into the formwork. be. Since this foundation structure is made of reinforced concrete, it would be too heavy to install Brecast products, so the only option was to construct it on site. For this reason, not only did many craftsmen, such as reinforcing bars and formwork workers, be needed to create the foundation, but the foundation work also took a long time.
【０００３】この欠点を解消するため、例えば特公昭６
０−２６７２４号公報に示される様に地中梁を鉄骨にし
て短柱と直接連結させて基礎を造成する方法が提案され
ている。しかしながらこの方法では地中梁が鉄骨である
ために腐食するといった問題があるので、鉄骨地中梁と
短柱の全体を覆うようにコンクリートを打設しなければ
ならず、更にまた鉄骨地中梁とコンクリートを一体化す
るための補強筋も必要とするものであった。従って、従
来工法と比べて鉄筋組み立て作業を簡略化されただけで
あって、大きな効果を奏するものではなかった。また、
コンクリートではなく塗装のみによって鉄骨地中梁の防
食を行う場合には、超厚膜エポキシ塗装やポリエチライ
ニング等の特別な塗装が必要であり、コストがかかるた
めに実用化できなかった。[0003] In order to eliminate this drawback, for example,
As shown in Japanese Patent No. 0-26724, a method has been proposed in which underground beams are made of steel and directly connected to short columns to construct a foundation. However, this method has the problem of corrosion because the underground beams are made of steel, so it is necessary to pour concrete to cover the entirety of the steel underground beams and short columns. Reinforcement bars were also required to integrate the concrete and concrete. Therefore, compared to the conventional construction method, the reinforcing bar assembly work was only simplified, and no great effect was achieved. Also,
Corrosion protection for steel underground beams using only paint instead of concrete requires special paint such as ultra-thick epoxy paint or polyethylene lining, which is costly and has not been practical.
【０００４】0004
【発明が解決しようとする課題】本発明は、鉄骨造建築
物の基礎工事において多くの職人が必要であるといった
要請や長い工期がかかるといった要請を解消しようとす
るものであり、更に具体的に言えば、地中梁を鉄骨にし
た場合に、補強筋を入れてコンクリートを打設したり、
特別な塗装を施さなければならないといった要請を解消
しようとするものである。[Problems to be Solved by the Invention] The present invention aims to solve the need for a large number of craftsmen and for a long construction period in the foundation work of steel-framed buildings. In other words, when underground beams are made of steel, reinforcing bars are added and concrete is poured,
This is an attempt to eliminate the need to apply special coatings.
【０００５】[0005]
【課題を解決するための手段】本発明は、柱を連結する
地中梁が鉄骨である鉄骨造建築物の基礎に於いて、基礎
全体が遮水シートで覆われて周辺地盤と遮断されている
ことを特徴とする建築物の基礎構造である。以下、図面
を用いて本発明を説明する。[Means for Solving the Problems] The present invention provides a foundation for a steel frame building in which the underground beams connecting columns are steel frames, and the entire foundation is covered with a water-shielding sheet and isolated from the surrounding ground. It is the basic structure of a building that is characterized by The present invention will be explained below using the drawings.
【０００６】図１は本発明の基礎構造の断面図、図２は
本発明の基礎構造の斜視図である。図のように、地中に
設けたフーチング１の上に鋼製の柱２が立てられ、フー
チングに予め埋め込まれたアンカーボルト３とナット４
によって固定されている。この柱に、鉄骨の地中梁５が
ボルト６によって柱と連結されている。更に、この杭部
分を除いた基礎全体が遮水シート７によって覆われ、周
辺地盤８と遮断されている。なお、本発明では、このよ
うに杭を含まない基礎全体を基礎全体と称する。FIG. 1 is a sectional view of the basic structure of the present invention, and FIG. 2 is a perspective view of the basic structure of the present invention. As shown in the figure, a steel column 2 is erected on a footing 1 installed underground, and anchor bolts 3 and nuts 4 are embedded in the footing in advance.
Fixed by A steel underground beam 5 is connected to this column by bolts 6. Further, the entire foundation except for this pile portion is covered with a water-shielding sheet 7 and isolated from the surrounding ground 8. In addition, in this invention, the whole foundation which does not include a pile in this way is called the whole foundation.
【０００７】以下、施工順序に従って説明する。先ず、
杭打等を終了して根切りを行った後、根切り底面から側
面まで、基礎の全体を覆うように遮水シートを敷設する
。遮水シートはフーチングを造成する以前に敷設した方
が作業が行い易い。遮水シートの材質は一般的に土木用
に使われる塩化ビニル、合成ゴム、或いは粘土粒子を不
織布でサンドイッチ状に挟んだ構成のもの、等である。[0007] The construction order will be explained below. First of all,
After driving piles and cutting roots, lay a water-blocking sheet to cover the entire foundation from the bottom of the roots to the sides. It is easier to install the water-blocking sheet before constructing the footing. The material of the water-shielding sheet is generally vinyl chloride used for civil engineering, synthetic rubber, or a structure in which clay particles are sandwiched between non-woven fabrics.
【０００８】遮水シートの継ぎ目は接着剤や熱融着等に
よって隙間ができないように接着する。この遮水シート
によって柱および鉄骨地中梁は周辺地盤と遮断される。
従って、遮水シートの内側では地盤中の地下水の出入り
がなくなり、鋼材の腐食が極めて少なくなる。[0008] The seams of the water-shielding sheets are bonded using adhesive, heat sealing, or the like so that no gaps are left. This water-shielding sheet isolates the columns and steel underground beams from the surrounding ground. Therefore, underground water does not enter or exit the ground inside the water-shielding sheet, and corrosion of the steel material is extremely reduced.
【０００９】次に、墨出しをしてフーチングを造成する
。フーチングは現場でコンクリートを打設して造成する
方法が一般的であるが、重量が小さいものであればブレ
キャストのものをクレーン等で設置してもよい。また、
フーチングだけでは支持力が不足する場合は杭９を打設
してフーチングと接合させる。このフーチング内に上面
から突出するようにアンカーボルトを埋設しておく。Next, a footing is created by marking out. Footings are generally constructed by pouring concrete on site, but if they are light in weight, they may be pre-cast and installed using a crane or the like. Also,
If the footing alone does not have enough supporting capacity, piles 9 are driven and connected to the footing. An anchor bolt is buried in this footing so as to protrude from the top surface.
【００１０】フーチング上に立てる柱は鋼製で通常は角
鋼管や丸鋼管等である。柱の下端は耐圧板１０を溶接し
ておき、耐圧板には前記アンカーボルトを挿入するため
の孔を加工しておく。柱はフーチング上に立てられた後
、ナットによってアンカーボルトに固定する。このとき
耐圧板とフーチングの間にできる空隙はモルタル注入等
によって埋めることが必要である。The pillars erected on the footing are made of steel and are usually square steel pipes or round steel pipes. A pressure plate 10 is welded to the lower end of the column, and a hole for inserting the anchor bolt is formed in the pressure plate. After the columns are erected on the footings, they are secured to the anchor bolts with nuts. At this time, it is necessary to fill the gap created between the pressure plate and the footing by pouring mortar or the like.
【００１１】柱に接合する鉄骨地中梁はＨ型鋼等の鋼材
が使用できる。鉄骨地中梁は上部構造の鉄骨と同様に亜
鉛メッキ等の簡単な塗装が施されていればよい。鉄骨地
中梁と柱は上部構造と同様な接合方法で接合する。即ち
、柱内部にダイアフラム１１を溶接して補強してブラケ
ット１２を取り付け、鉄骨地中梁と添え板１３を介して
ボルト等で接合を行ったり、或いは柱に内ネジを有する
ボックス等を設けてスプリットティー等を介してボルト
接合によって鉄骨地中梁と接合する方法である。従って
、基礎の地中梁から上部の柱、梁１５まで一連の作業で
組み上げることができる。[0011] Steel materials such as H-shaped steel can be used for the steel underground beams to be connected to the columns. Steel underground beams only need to be simply painted, such as galvanized, in the same way as the steel frames of the superstructure. Steel underground beams and columns will be connected using the same method as the superstructure. That is, the diaphragm 11 is welded and reinforced inside the column, the bracket 12 is attached, and the steel frame underground beam and the splint plate 13 are connected with bolts, etc., or the column is provided with a box or the like having internal threads. This is a method of connecting steel underground beams by bolting via split tees, etc. Therefore, it is possible to assemble everything from the underground beam of the foundation to the upper column and beam 15 in a series of operations.
【００１２】最後に、遮水シートの上端部１４をベース
コンクリート等に埋め込んで、外部からの水の侵入がな
いようにする。このとき、遮水シートの内側は空洞でも
良いが、ＡＬＣパウダー等のアルカリ性を有する粒体１
３や腐食しない土砂等を入れて柱脚部や鉄骨地中梁の周
辺を埋めておけば鋼材の腐食に対して更に好ましい。Finally, the upper end 14 of the water-shielding sheet is embedded in base concrete or the like to prevent water from entering from outside. At this time, the inside of the water-blocking sheet may be hollow, but alkaline particles such as ALC powder 1
It is even better to prevent corrosion of steel materials by filling the area around the column bases and steel underground beams with 3 or non-corrosive earth and sand.
【００１３】[0013]
【実施例】本発明の一実施例を図１、および図２により
説明する。実施例の建築物は、建築面積約８７ｍ２ の
鉄骨造３階建の店舗であった。地盤は軟弱のために外径
２００ｍｍ、長さ１０ｍの鋼管杭を柱下に１本ずつ計６
本打設した。根切りして杭頭を露出させた後に全体にわ
たって遮水シートを敷設した。遮水シートは合成ゴム製
のものを用いて継ぎ目は接着剤によって接合した。杭頭
部はシートに開口部を設けて露出させた。この杭の上に
、鉄筋、型枠を組んで更に柱を接合するためのアンカー
を設置した後コンクリートを打設してフーチングを造成
した。[Embodiment] An embodiment of the present invention will be explained with reference to FIGS. 1 and 2. The building in this example was a three-story steel-frame store with a building area of approximately 87 m2. Because the ground is soft, a total of 6 steel pipe piles with an outer diameter of 200 mm and a length of 10 m were installed, one under each pillar.
The actual construction was completed. After cutting the roots and exposing the pile heads, a water-blocking sheet was laid over the entire area. The water-shielding sheet was made of synthetic rubber, and the seams were joined with adhesive. The pile head was exposed by making an opening in the sheet. On top of these piles, reinforcing bars and formwork were assembled, anchors were installed to connect the columns, and then concrete was poured to create the footing.
【００１４】次にクレーンを用いて柱を立て、柱脚はナ
ットで締め付けてアンカーボルトに固定した。柱の外径
は２５０ｍｍで柱脚部の地中梁との接合部は上部構造と
同じようにダイアフラムで補強してプラケットを取り付
けた構造とした。このブラケットに高さ６００ｍｍ、フ
ランジ幅２００ｍｍのＨ鋼を鉄骨地中梁として、添え板
を介してボルド接合した。尚、この鉄骨地中梁は上部の
梁と同じく簡単な亜鉛メッキを施しただけのものであり
、特別な塗装は行っていない。Next, a crane was used to erect the column, and the column base was tightened with nuts and fixed to anchor bolts. The outer diameter of the column is 250 mm, and the joint between the column base and the underground beam is reinforced with a diaphragm and a placket is attached, similar to the superstructure. A steel underground beam of H steel with a height of 600 mm and a flange width of 200 mm was bolted to this bracket via splints. This steel underground beam is simply galvanized like the upper beam, and no special coating is applied.
【００１５】この後、引き継いて上部の柱や梁の組み立
てまで、一連の作業として鉄骨を組み上げた。配管等は
鉄骨地中梁の下を通し、遮水シートに開口部を設けて外
に出した。次に、遮水シートの内側にＡＬＣパウダーを
ポンプによって投入し、柱の柱脚部や鉄骨地中梁の周囲
を埋めた。遮水シートの上端はベースコンクリートの中
に埋め込んだ。After this, we took over and assembled the steel frame as a series of tasks, including assembling the upper columns and beams. The pipes were routed under the underground steel beams and exposed through an opening in the water-blocking sheet. Next, ALC powder was pumped into the inside of the water-blocking sheet to fill in the bases of the columns and around the steel underground beams. The upper end of the water-shielding sheet was embedded in the base concrete.
【００１６】このようにして施工した本発明の基礎は、
従来の基礎工事に比べて約１週間の工期短縮となり、費
用の面でも約１割のコストダウンとなった。The basis of the present invention constructed in this way is:
Compared to conventional foundation construction, the construction time was shortened by about one week, and costs were also reduced by about 10%.
【００１７】[0017]
【発明の効果】本発明の基礎構造とすることによって、
■遮水シートで地下水の出入りを遮断することによって
基礎部分の鋼材を腐食するので、鉄骨地中梁および柱脚
は特別な塗装を施したり補強筋を入れてコンクリートで
周囲を固めたりする必要がなくなり、地中梁から上部ま
で一連の作業で鉄骨を組み上げることができるため、工
期の短縮ができる、■鉄筋工、型枠工等の技能を必要と
する職人が極めて少なくて済む、■地中梁が鉄骨のため
軽量であるので、建物重量が軽くなると共に、施工性が
良い、等の効果を奏する。[Effect of the invention] By using the basic structure of the present invention,
■ Blocking groundwater in and out with a water-blocking sheet will corrode the steel in the foundation, so underground steel beams and column bases must be specially painted, reinforced with reinforcement, and surrounded by concrete. Since the steel frame can be assembled in a series of operations from the underground beam to the upper part, the construction period can be shortened.■ Extremely fewer craftsmen are required for skills such as reinforcing bar work and form work.■ Underground construction Since the beams are made of steel, they are lightweight, which reduces the weight of the building and makes it easier to construct.
【図１】本発明の基礎構造の断面図。FIG. 1 is a sectional view of the basic structure of the present invention.
【図２】本発明の基礎構造の斜視図。FIG. 2 is a perspective view of the basic structure of the present invention.
１ フーチング ２ 柱 ３ アンカーボルト ４ ナット ５ 鉄骨地中梁 ６ 添え板 ７ 遮水シート ８ 地盤 ９ 杭 １０ ベースプレート １１ ダイアフラム １２ ブラケット １３ 添え板 １４ 遮水シートの上端部 １５ 梁 1 Footing 2 Pillar 3 Anchor bolt 4 Nut 5 Steel underground beams 6 Splicing plate 7 Waterproof sheet 8 Ground 9. Pile 10 Base plate 11 Diaphragm 12 Bracket 13 Additional plate 14 Upper end of water-blocking sheet 15 Beam
Claims (1)
造建築物の基礎に於いて、基礎全体が遮水シートで覆わ
れて周辺地盤と遮断されていることを特徴とする建築物
の基礎構造。[Claim 1] A building characterized in that, in the foundation of a steel-frame building in which the underground beams connecting the columns are steel frames, the entire foundation is covered with a water-shielding sheet and isolated from the surrounding ground. basic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8368991A JPH04315620A (en) | 1991-04-16 | 1991-04-16 | Foundation structure for steel-framed building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8368991A JPH04315620A (en) | 1991-04-16 | 1991-04-16 | Foundation structure for steel-framed building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04315620A true JPH04315620A (en) | 1992-11-06 |
Family
ID=13809461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8368991A Withdrawn JPH04315620A (en) | 1991-04-16 | 1991-04-16 | Foundation structure for steel-framed building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04315620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008038586A (en) * | 2006-07-12 | 2008-02-21 | Arcreate:Kk | Method of integrating joint part of pile, column and footing beam of steel frame structure |
| GB2445798A (en) * | 2007-01-20 | 2008-07-23 | Eugene Stirk | Foundations for small buildings such as conservatories, garages, porches and small extensions |
| JP2015001047A (en) * | 2013-06-13 | 2015-01-05 | 大成建設株式会社 | Unequal settlement countermeasure structure of construction |
-
1991
- 1991-04-16 JP JP8368991A patent/JPH04315620A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008038586A (en) * | 2006-07-12 | 2008-02-21 | Arcreate:Kk | Method of integrating joint part of pile, column and footing beam of steel frame structure |
| GB2445798A (en) * | 2007-01-20 | 2008-07-23 | Eugene Stirk | Foundations for small buildings such as conservatories, garages, porches and small extensions |
| JP2015001047A (en) * | 2013-06-13 | 2015-01-05 | 大成建設株式会社 | Unequal settlement countermeasure structure of construction |
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