JPH10121489A - Building structure utilizing pile as pillar - Google Patents
Building structure utilizing pile as pillarInfo
- Publication number
- JPH10121489A JPH10121489A JP27511696A JP27511696A JPH10121489A JP H10121489 A JPH10121489 A JP H10121489A JP 27511696 A JP27511696 A JP 27511696A JP 27511696 A JP27511696 A JP 27511696A JP H10121489 A JPH10121489 A JP H10121489A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- building structure
- pile
- pillar
- surface layer
- 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
- Foundations (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は杭をそのまま柱と
して利用した建築構造物に関するものであり、特に、低
層の店舗や倉庫等に適した建築構造物に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building structure using a pile as a pillar as it is, and more particularly to a building structure suitable for a low-rise store or warehouse.
【０００２】[0002]
【従来の技術】従来の此種建築構造物として、地中に打
ち込んだコンクリート杭の地上立上がり部にフラットス
ラブを支持させるとともに、基礎（基礎フーチング）を
設けないこととした手段が提案されている（特開平６−
８１３４２号）。2. Description of the Related Art As a conventional building structure of this type, means has been proposed in which a flat slab is supported on a rising portion of a concrete pile driven into the ground and a foundation (foundation footing) is not provided. (Japanese Unexamined Patent Publication No.
No. 81342).
【０００３】[0003]
【発明が解決しようとする課題】上掲の手段によれば基
礎フーチングは不要となるが、杭と杭とを繋ぐ地中梁は
建築構造物の所要強度を確保する上で必要不可欠であ
る。然し乍ら、該地中梁は地盤内に埋設するものである
ので、施工が煩雑で相当の工期を必要とする。According to the above-mentioned means, the foundation footing is not required, but the underground beams connecting the piles are indispensable for securing the required strength of the building structure. However, since the underground beam is buried in the ground, the construction is complicated and requires a considerable construction period.
【０００４】そこで、此種建築構造物の所要強度を確保
しつつ、工期短縮を図るために解決すべき技術的課題が
生じてくるのであり、本発明は該課題を解決することを
目的とする。[0004] Therefore, there arises a technical problem to be solved in order to shorten the construction period while securing the required strength of this kind of building structure, and the present invention aims to solve the problem. .
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
するために提案されたものであり、杭の下部を地盤中に
位置させるとともに、該杭の上部を地上に突出させて柱
と成し、且つ、前記地盤の表層を地盤改良した杭を柱に
利用した建築構造物を提供するものである。SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems, and has a structure in which a lower portion of a pile is located in the ground and an upper portion of the pile is projected above the ground to form a pillar. In addition, the present invention provides a building structure using, as pillars, piles obtained by improving the surface layer of the ground.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態を図１
乃至図４に従って詳述する。図１は敷地１に建築構造物
２の骨組を構築した状態を示し、地盤３には掘削孔４，
４…がアースオーガ等の掘削具にて掘削され、その先端
は支持層３ａまで達している。そして、該掘削孔４，４
…内にセメントミルク５を充填するとともに、杭６，６
…を埋め込む。該杭６，６…はＰＨＣパイル、ＰＲＣパ
イル、鋼管巻ＰＣパイル等のコンクリート杭の他、鋼管
やＨ形鋼等を用いても良く、特にその種類、材質は限定
されない。また、杭６の埋め込みに代え、杭６を打ち込
んでも良い。FIG. 1 is a block diagram showing an embodiment of the present invention.
4 to FIG. FIG. 1 shows a state in which a frame of a building structure 2 has been constructed on a site 1, and excavation holes 4,
4 are excavated with an excavator such as an earth auger, and the tip of the excavator reaches the support layer 3a. And the drilling holes 4, 4
… With cement milk 5 inside,
Embed ... The piles 6, 6,... May be concrete piles such as PHC piles, PRC piles, steel pipe wound PC piles, steel pipes, H-section steels, etc., and the types and materials thereof are not particularly limited. Further, instead of embedding the pile 6, the pile 6 may be driven.
【０００７】而して、該杭６，６…はその全長が地中に
埋設されるのではなく、上部が地上に突出してその天端
は建築構造物２の天井高さまで達することにより、該建
築構造物２の柱７，７…を形成している。このように建
築構造物の基礎となる杭をそのまま柱として利用した場
合、その杭（柱）が建築構造物の自重や地震による水平
力等に対して所要強度を確保できるかが問題となる。The piles 6, 6,... Are not buried in the whole length, but project upward from the ground and reach the ceiling to the ceiling height of the building structure 2. The pillars 7 of the building structure 2 are formed. In this way, when a pile serving as a foundation of a building structure is used as a column as it is, there is a problem whether the pile (column) can secure required strength against the weight of the building structure, horizontal force due to an earthquake, and the like.
【０００８】そこで、発明者は図２に示すモデルを用い
て外力による杭変形の解析を行った。具体的には、杭の
モデルとして線材Ｌを考え、該線材Ｌの全長を１３００
０mmとするとともに、地中へ９０００mm打ち込み、地上
に４０００mm突出させることとした。また、該線材Ｌの
先端（下端）をピン支持するとともに、地中に埋設され
た部分には、杭が地盤から受ける弾性復原力に相当する
ものとして、合計９個のバネｋ1 ，ｋ2 …ｋ9 を１００
０mm間隔で水平に接続した。更に、線材Ｌの天端に外力
として軸力Ｐ及び水平力Ｈを加えた。Therefore, the inventor analyzed pile deformation due to external force using the model shown in FIG. Specifically, the wire L is considered as a model of the pile, and the total length of the wire L is 1300.
It was set to 0 mm, and 9000 mm was driven into the ground to protrude 4000 mm above the ground. The tip (lower end) of the wire L is supported by a pin, and a portion buried in the ground has a total of nine springs k 1 , k 2 corresponding to the elastic restoring force received from the ground by the pile. … K 9 is 100
They were connected horizontally at 0 mm intervals. Further, an axial force P and a horizontal force H were applied to the top end of the wire L as external forces.
【０００９】そして、そのケーススタディ結果より、前
記バネｋ1 ，ｋ2 …ｋ9 のうち線材Ｌの変形モードを支
配する度合が最も大きいものは最上部のバネｋ1 であ
り、残りのバネｋ2 〜ｋ9 は影響度が小さいことが判明
した。即ち、これらのバネｋ1，ｋ2 …ｋ9 のバネ定数
を種々の大きさに設定して線材Ｌの変形モードがどのよ
うに変化するかを調べたところ、バネｋ1 のバネ定数が
変わると線材Ｌの変形モードも大きく変化するが、その
他のバネｋ2 〜ｋ9 のバネ定数が変わっただけでは線材
Ｌの変形モードにそれほど大きな変化は見られなかった
のである。From the results of the case study, the spring k 1 , k 2 ... K 9 , which has the highest degree of controlling the deformation mode of the wire L, is the uppermost spring k 1 and the remaining springs k 1 , k 2. 2 ~k 9 was found to influence the degree is small. That is, when the spring constants of these springs k 1 , k 2 ... K 9 are set to various sizes, and how the deformation mode of the wire L changes is examined, the spring constant of the spring k 1 changes. the wire L is also changed greatly deformed mode, other only has changed the spring constant of the spring k 2 to k 9 are so large change in the deformation mode of the wire L is was not observed.
【００１０】このことは実際の杭を柱に利用した建築構
造物に於いて、表層（地表から深さ１ｍ程度）の地盤特
性についてのみ、精度良く評価することができれば、柱
となる部分の変形量を制御できることを意味し、その結
果、該建築構造物の所要強度も充分に確保できることに
なる。ところで、地盤のボーリングデータから各深さ毎
のバネ定数を定め、前述した解析モデルに当て嵌めよう
としても、通常ボーリングデータ自体のばらつきが大き
いので信頼の置ける評価は望めない。しかし、評価の対
象が表層だけであれば斯かる問題も解消する。[0010] This means that in a building structure using actual piles as pillars, if only the ground characteristics of the surface layer (about 1 m deep from the surface of the ground) can be accurately evaluated, the deformation of the pillar portions This means that the amount can be controlled, and as a result, the required strength of the building structure can be sufficiently secured. By the way, even if the spring constant for each depth is determined from the boring data of the ground and is applied to the above-described analysis model, reliable evaluation cannot be expected because the variation of the boring data itself is large. However, if the evaluation target is only the surface layer, such a problem is also solved.
【００１１】即ち、図１に示す如く、地盤３の表層３ｂ
に地表から固化剤を注入することにより地盤改良する。
この地盤改良部８の深さは大略１ｍ程度であるが、建築
構造物２の高さや柱７，７…に加わる荷重並びに固化剤
の物性（硬度等）等に応じて増減させる。また、敷地１
の全面を地盤改良するのがベストであるが、図３のよう
に杭６，６…間を縦横に結ぶ格子状に形成すれば経済的
であり、且つ、地中梁と同様の作用を奏するので機能的
にも優れている。更に、図４の如く杭６，６…の周縁を
囲繞するように形成しても良い。That is, as shown in FIG. 1, the surface layer 3b of the ground 3
The ground is improved by injecting a solidifying agent from the ground surface.
The depth of the ground improvement portion 8 is approximately 1 m, but is increased or decreased according to the height of the building structure 2, the load applied to the columns 7, and the physical properties (hardness and the like) of the solidifying agent. Site 1
It is best to improve the ground over the entire surface, but it is economical if it is formed in a grid shape connecting the piles 6, 6 ... vertically and horizontally as shown in Fig. 3, and it has the same effect as an underground beam. It is also functionally excellent. Further, as shown in FIG. 4, the piles 6 may be formed so as to surround the periphery thereof.
【００１２】このように表層３ｂを人為的に改良するこ
とにより、該表層３ｂの剛性を高めつつその地盤特性を
精度良く評価することができる。斯くして、柱７，７…
の変形量が制御可能になり、従って、地中梁が無くても
建築構造物２の所要強度を充分に確保することができ
る。As described above, by artificially improving the surface layer 3b, the rigidity of the surface layer 3b can be increased and the ground characteristics thereof can be accurately evaluated. Thus, pillars 7, 7 ...
Can be controlled, and therefore the required strength of the building structure 2 can be sufficiently secured even without the underground beam.
【００１３】然る後に図１に示す如く、土間コンクリー
ト９を打設するとともに、柱７，７…の天端上に桁１
０，１０…を架設する。更に折板葺屋根１１を被せる等
して、建築構造物２を完成させる。Then, as shown in FIG. 1, a concrete slab 9 is cast and a girder 1 is placed on the top of the columns 7, 7,.
0, 10 ... are installed. Further, the architectural structure 2 is completed by, for example, covering the folded roof 11.
【００１４】尚、本発明は、本発明の精神を逸脱しない
限り種々の改変を為すことができ、そして、本発明が該
改変されたものに及ぶことは当然である。The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
【００１５】[0015]
【発明の効果】以上説明したように、本発明は地盤の表
層を地盤改良することにより、該表層の剛性を高めつつ
その地盤特性を精度良く評価することができるので、杭
上部の柱として利用する部分に於ける変形量が制御可能
となる。しかも評価対象が表層のみであり、表層だけを
地盤改良すれば良いので設計及び施工が容易である。As described above, according to the present invention, by improving the surface layer of the ground, the characteristics of the ground can be accurately evaluated while increasing the rigidity of the surface layer. It becomes possible to control the amount of deformation in the portion where the deformation occurs. In addition, since the evaluation target is only the surface layer, and only the surface layer needs to be improved, the design and construction are easy.
【００１６】斯くして、地中梁が無くても杭を柱に利用
した建築構造物の所要強度を充分に確保することがで
き、工期の大幅な短縮ができるとともに工費削減にも寄
与する等、正に種々の効果を奏する発明である。Thus, even if there is no underground beam, the required strength of a building structure using a pile as a pillar can be sufficiently secured, and the construction period can be significantly shortened and the construction cost can be reduced. It is an invention which has various effects.
【図１】本発明の一実施の形態を示し、杭を柱に利用し
た建築構造物の斜視図。FIG. 1 shows an embodiment of the present invention, and is a perspective view of a building structure using a pile as a pillar.
【図２】外力による杭の変形を調べる解析モデルの解説
図。FIG. 2 is an explanatory diagram of an analysis model for examining a deformation of a pile due to an external force.
【図３】地盤改良の一例を示す平面図。FIG. 3 is a plan view showing an example of ground improvement.
【図４】地盤改良の他の例を示す平面図。FIG. 4 is a plan view showing another example of ground improvement.
２ 建築構造物 ３ 地盤 ３ｂ 表層 ６ 杭 ７ 柱 ８ 地盤改良部 2 building structure 3 ground 3b surface layer 6 pile 7 pillar 8 ground improvement section
Claims (1)
に、該杭の上部を地上に突出させて柱と成し、且つ、前
記地盤の表層を地盤改良したことを特徴とする杭を柱に
利用した建築構造物。1. A pile comprising: a lower portion of a pile positioned in the ground, an upper portion of the pile protruding above the ground to form a pillar, and a surface layer of the ground is improved in ground. The building structure used.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08275116A JP3098719B2 (en) | 1996-10-17 | 1996-10-17 | Building structures using piles as pillars |
| CN97122741A CN1186140A (en) | 1996-10-17 | 1997-10-15 | Building structure whose piles are partly used for columns |
| IDP973452A ID18595A (en) | 1996-10-17 | 1997-10-16 | BUILDING STRUCTURE WHICH IS USED AS PART FOR COLUMNS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08275116A JP3098719B2 (en) | 1996-10-17 | 1996-10-17 | Building structures using piles as pillars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10121489A true JPH10121489A (en) | 1998-05-12 |
| JP3098719B2 JP3098719B2 (en) | 2000-10-16 |
Family
ID=17550950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08275116A Expired - Fee Related JP3098719B2 (en) | 1996-10-17 | 1996-10-17 | Building structures using piles as pillars |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3098719B2 (en) |
| CN (1) | CN1186140A (en) |
| ID (1) | ID18595A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003119798A (en) * | 2001-10-19 | 2003-04-23 | Tenox Corp | Earthen floor concrete and its construction method |
| JP2011043029A (en) * | 2009-08-24 | 2011-03-03 | Kumagai Gumi Co Ltd | Building |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948547B (en) * | 2017-04-26 | 2022-11-25 | 黑龙江施耐达建筑技术有限公司 | Large-span assembled opening type building bottom plate I-beam mounting support and mounting assembly |
| CN108457268B (en) * | 2018-04-28 | 2023-12-26 | 中交一航局第一工程有限公司 | Steel pile water butt joint limiter and use method thereof |
| CN109914431A (en) * | 2019-04-08 | 2019-06-21 | 中国铁建大桥工程局集团有限公司 | A kind of novel prefabrication cast-in-place combination Row Piles Supporting Structure |
| CN112282047B (en) * | 2020-10-21 | 2022-04-01 | 吉林建筑大学 | Connecting structure and connecting method for assembled composite floor slab and composite wallboard |
-
1996
- 1996-10-17 JP JP08275116A patent/JP3098719B2/en not_active Expired - Fee Related
-
1997
- 1997-10-15 CN CN97122741A patent/CN1186140A/en active Pending
- 1997-10-16 ID IDP973452A patent/ID18595A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003119798A (en) * | 2001-10-19 | 2003-04-23 | Tenox Corp | Earthen floor concrete and its construction method |
| JP2011043029A (en) * | 2009-08-24 | 2011-03-03 | Kumagai Gumi Co Ltd | Building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3098719B2 (en) | 2000-10-16 |
| CN1186140A (en) | 1998-07-01 |
| ID18595A (en) | 1998-04-23 |
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