JPH06212648A - Foundation construction - Google Patents
Foundation constructionInfo
- Publication number
- JPH06212648A JPH06212648A JP5019622A JP1962293A JPH06212648A JP H06212648 A JPH06212648 A JP H06212648A JP 5019622 A JP5019622 A JP 5019622A JP 1962293 A JP1962293 A JP 1962293A JP H06212648 A JPH06212648 A JP H06212648A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- foundation
- ground
- concrete
- shaped body
- 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.)
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Links
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、基礎工法に関する。さ
らに詳しくは、木造家屋等の比較的低荷重の建屋の基礎
を施工する基礎工法の根切り工事に係る改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basic construction method. More specifically, the present invention relates to an improvement in root cutting work of a foundation construction method for constructing a foundation of a building having a relatively low load such as a wooden house.
【0002】[0002]
【従来の技術】従来、基礎工法としては、例えば、図4
〜図6に記載のものが知られている。2. Description of the Related Art Conventionally, as a basic construction method, for example, FIG.
~ The one described in Fig. 6 is known.
【0003】この従来の基礎工法は、まず、根切り工事
を施工する。即ち、図4(A)に示すように、やりかた
等に沿って地盤1に根切り溝2を掘溝してから、図4
(B)に示すように、根切り溝2の根切り底3に栗石
(割り栗石)4を敷き詰め(必要に応じて、砂,砂利等
が栗石4の間に詰め込まれる。)て打ち固めその上に捨
てコンクリート5を打設する。In this conventional basic construction method, root cutting work is first carried out. That is, as shown in FIG. 4 (A), the root-cutting groove 2 is dug in the ground 1 along the way, and then, as shown in FIG.
As shown in (B), the root cutting bottom 3 of the root cutting groove 2 is spread with crushed stones (cracked stones) 4 (sand, gravel, etc. are packed between the crushed stones 4 if necessary) and compacted. Discard concrete 5 on top.
【0004】このような根切り工事を施工した後には、
布基礎6を施工する。即ち、図4(C)に示すように、
捨てコンクリート5の上に布基礎6を強化するための鉄
筋7とT字形となる布基礎6のフーチング部6aのみを
造成するための仮枠8とを組立て、仮枠8の内部にコン
クリートを打設して、布基礎6のフーチング部6aを造
成する。而後、図4(D)に示すように、前記仮枠8を
取り除いて、布基礎6のフーチング部6aの上に布基礎
6の基礎ばり部6bのみを造成するための新たな仮枠9
を組立て、仮枠9の内部にコンクリートを打設して、布
基礎6の基礎ばり部6bを造成する。なお、布基礎6の
施工については、図5に示すように、フーチング部6
a,基礎ばり部6bを一体的に成形しブロック化した布
基礎6を捨てコンクリート5の上に載上することも行わ
れている。After performing such root cutting work,
The cloth foundation 6 is constructed. That is, as shown in FIG.
Reinforcing bars 7 for strengthening the cloth foundation 6 and a temporary frame 8 for forming only the footing portion 6a of the T-shaped cloth foundation 6 are assembled on the discarded concrete 5, and concrete is poured into the temporary frame 8. Then, the footing portion 6a of the cloth foundation 6 is formed. Then, as shown in FIG. 4 (D), the temporary frame 8 is removed, and a new temporary frame 9 for forming only the foundation flash portion 6b of the cloth foundation 6 on the footing portion 6a of the cloth foundation 6 is formed.
Is assembled and concrete is placed inside the temporary frame 9 to form the foundation flash portion 6b of the cloth foundation 6. As for the construction of the cloth foundation 6, as shown in FIG.
It is also practiced that the cloth foundation 6 formed by integrally molding the a and the foundation flash portion 6b into a block is discarded and placed on the concrete 5.
【0005】このような布基礎6を施工した後には、図
6に示すように、根切り溝2を掘溝した掘土を埋戻し
て、布基礎6のフーチング部6aを地盤1中に埋設し基
礎ばり部6bの上部のみを地盤1中から露出させるよう
にする。この埋戻しによって基礎の施工が完了すること
になるが、建家等の荷重Aに対しては布基礎6のフーチ
ング部6aの下面全体で地盤1の耐荷重力Bを受け、地
震等による横力Cで生ずる転倒力Dに対しては、布基礎
6のフーチング部6aの上下両面の一部で夫々地盤1の
摩擦,土圧からなる転倒抵抗力Eを受けることになる。After the cloth foundation 6 has been constructed, as shown in FIG. 6, the excavated soil in which the root cutting groove 2 is dug is backfilled, and the footing portion 6a of the cloth foundation 6 is buried in the ground 1. Only the upper portion of the foundation beam portion 6b is exposed from the ground 1. This backfilling completes the foundation construction, but for the load A of the building, etc., the load bearing force B of the ground 1 is received by the entire lower surface of the footing portion 6a of the cloth foundation 6, and the lateral force due to an earthquake or the like is applied. With respect to the falling force D generated by C, the upper and lower surfaces of the footing portion 6a of the cloth foundation 6 receive the falling resistance force E composed of friction of the ground 1 and earth pressure, respectively.
【0006】このような従来の基礎工法では、地震等に
よる横力Cで生ずる転倒力Dに対する転倒抵抗力Eを高
める手段として布基礎6のフーチング部6a上面側の地
盤1を厚くすることが行われていることから、根切り溝
2の深さHを深くしなければならないため、根切り溝2
を掘溝する掘土の量が多くなってしまったり、深くなっ
た根切り底3に対して周囲の土崩れを注意しながら栗石
4の敷き詰め,捨てコンクリート5の打設,仮枠8の組
立て等を行わなければならなくなり、工事全体が面倒に
なるという問題点を有している。さらに、根切り溝2の
深さHを深くしても、地盤1の土質によっては有効な転
倒抵抗力Eを得ることができないという問題点を有して
いる。In such a conventional foundation construction method, the ground 1 on the upper surface side of the footing portion 6a of the cloth foundation 6 is made thick as a means for increasing the fall resistance force E against the fall force D generated by the lateral force C caused by an earthquake or the like. Therefore, since the depth H of the root cutting groove 2 must be increased, the root cutting groove 2
The amount of excavated soil in the trench will be increased, and the gravel stones 4 will be spread over the deep root cutting bottom 3 while paying attention to the surrounding landslides, the concrete 5 will be discarded, and the temporary frame 8 will be assembled. However, there is a problem that the whole construction becomes troublesome. Further, even if the depth H of the root cutting groove 2 is increased, there is a problem that an effective fall resistance E cannot be obtained depending on the soil quality of the ground 1.
【0007】[0007]
【発明が解決しようとする課題】本発明は、前述の問題
点を考慮してなされたもので、地震等による横力で生ず
る転倒力に対する有効な転倒抵抗力が形成される基礎を
簡単な工事によって施工することのできる基礎工法を提
供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and a simple construction of a foundation on which an effective fall resistance against a fall force generated by a lateral force due to an earthquake or the like is formed. It is an object to provide a basic construction method that can be constructed by.
【0008】[0008]
【課題を解決するための手段】前述の課題を解決するた
め、本発明に係る基礎工法は、地盤に掘溝した根切り底
に栗石を敷き詰めて捨てコンクリートを打設する根切り
工事を施工してから、捨てコンクリートの上に布基礎を
施工する基礎工法において、布基礎の施工の前に布基礎
の下方となる地盤に立坑を削孔し立坑の内部にコンクリ
ートを打設して杭状体を造成することを特徴とする手段
を採用する。[Means for Solving the Problems] In order to solve the above-mentioned problems, the foundation construction method according to the present invention is a root cutting work in which root cutting bottoms dug in the ground are laid with crushed stones and waste concrete is placed. Then, in the foundation construction method of constructing a cloth foundation on abandoned concrete, a shaft is drilled in the ground below the cloth foundation and concrete is placed inside the shaft to construct a pile Is adopted.
【0009】[0009]
【作用】前述の手段によると、布基礎の下方から地盤に
杭状体が食込んだような基礎構造が形成されることか
ら、杭状体と地盤との広い面積での摩擦によりかなり高
い転倒抵抗力が形成されることになり、また、杭状体が
布基礎の下方となる地盤に立坑の削孔,コンクリートの
打設によって造成されることから、根切り溝の深さを深
くする必要性ががなくなりそのために特別に面倒な工事
が要求されるわけでもない。このため、地震等による横
力で生ずる転倒力に対する有効な転倒抵抗力が形成され
る基礎を簡単な工事によって施工することのできる基礎
工法を提供するという課題が解決される。[Operation] According to the above-mentioned means, since a foundation structure is formed in which the pile-like body digs into the ground from below the cloth foundation, a considerably high fall due to friction between the pile-like body and the ground. It is necessary to increase the depth of the root-cutting groove because a resistance force will be formed and the pile-like body will be constructed by drilling a vertical shaft and placing concrete in the ground below the cloth foundation. There is no need for special work because of the lack of flexibility. Therefore, the problem to be solved is to provide a foundation method capable of constructing a foundation in which an effective fall resistance against a fall force generated by a lateral force due to an earthquake or the like is formed by a simple construction.
【0010】[0010]
【実施例】以下、本発明に係る基礎工法の実施例を図面
に基いて説明する。Embodiments of the basic construction method according to the present invention will be described below with reference to the drawings.
【0011】図1,図2は、本発明に係る基礎工法の第
1実施例を示すものである。1 and 2 show a first embodiment of the basic construction method according to the present invention.
【0012】この実施例では、根切り工事の根切り溝2
の掘溝の際に杭状体10を造成する工法を示してある。In this embodiment, a root cutting groove 2 for root cutting work
The construction method of forming the pile-shaped body 10 at the time of the trench is shown.
【0013】この実施例は、まず、前述の従来例と同様
に地盤1に根切り溝2を掘溝する(図2(A)参照)。
次に、図2(B)に示すように、根切り底3からオーガ
11等で立坑12を削孔する。この立坑12は、建築し
ようとする建家の荷重,地震等による横力Cで生ずる転
倒力Dの分布等に対応して、根切り溝2の掘溝方向へ一
定間隔で削孔されたり布基礎6の角部となる部分に削孔
される。そして、削孔された立坑12に対しては直ちに
コンクリートが打設され、図2(C)に示すように、布
基礎6の下方となる地盤1に杭状体10が造成される。In this embodiment, first, similarly to the above-mentioned conventional example, the root cutting groove 2 is dug in the ground 1 (see FIG. 2A).
Next, as shown in FIG. 2B, the shaft 12 is drilled from the root cutting bottom 3 with an auger 11 or the like. This vertical shaft 12 is drilled or clothed at regular intervals in the digging groove direction of the root cutting groove 2 in accordance with the load of the building to be built, the distribution of the overturning force D generated by the lateral force C due to an earthquake, etc. Holes are drilled in the corner portions of the base 6. Then, concrete is immediately poured into the drilled vertical shaft 12, and as shown in FIG. 2C, the pile-shaped body 10 is formed on the ground 1 below the cloth foundation 6.
【0014】このように杭状体10を造成した後には、
図2(D)に示すように、杭状体10の周りの根切り溝
2の根切り底3に栗石4を敷き詰めて打ち固めその上に
捨てコンクリート5を打設し、前述の従来例のように捨
てコンクリート5の上に布基礎6を造成または載上する
ことになる。After forming the pile-shaped body 10 in this manner,
As shown in FIG. 2 (D), crushed stones 4 are spread on the root-cutting bottoms 3 of the root-cutting grooves 2 around the pile-shaped body 10 and compacted. Thus, the cloth foundation 6 is formed or placed on the discarded concrete 5.
【0015】このような実施例によると、根切り工事の
根切り溝2の掘溝と同時的に立坑12を削孔し、直ちに
立坑12にコンクリートを打設することにより杭状体1
0を造成するため、杭状体10の造成工事自体が簡単で
あると共に、根切り工事の進行に支障を及ぼすこともな
い。According to such an embodiment, the vertical shaft 12 is drilled at the same time as the root cutting groove 2 of the root cutting work, and concrete is immediately placed into the vertical shaft 12 to form the pile-shaped body 1.
Since 0 is created, the construction itself of the pile-shaped body 10 is simple and does not hinder the progress of root cutting work.
【0016】また、このような実施例によって施工され
た基礎構造は、図1に示すように、布基礎6のフーチン
グ部6aの下面の一部が柱形に下方へ延長され、布基礎
6の下方から地盤1に杭状体10が食込んだような格好
となる。このため、杭状体10の周面と地盤1とが広い
面積で当接することになり、地震等による横力Cで生ず
る転倒力Dに対して杭状体10の周面と地盤1との摩擦
によりかなり高い転倒抵抗力Eが形成されることにな
る。従って、前述の従来例のように転倒抵抗力Eを高め
るために布基礎6のフーチング部6aを地盤1中に深く
埋設する必要がなく、布基礎6のフーチング部6aの上
面が地盤1中から露出する程度に根切り溝2の深さHを
浅くすることができる。Further, in the foundation structure constructed according to such an embodiment, as shown in FIG. 1, a part of the lower surface of the footing portion 6a of the cloth foundation 6 is extended downward in a pillar shape, and It looks like the pile-shaped body 10 bites into the ground 1 from below. Therefore, the peripheral surface of the pile body 10 and the ground 1 come into contact with each other over a wide area, and the peripheral surface of the pile body 10 and the ground 1 against the overturning force D generated by the lateral force C due to an earthquake or the like. Due to the friction, a considerably high fall resistance force E is formed. Therefore, it is not necessary to deeply bury the footing portion 6a of the cloth foundation 6 in the ground 1 in order to increase the fall resistance E as in the above-described conventional example, and the upper surface of the footing portion 6a of the cloth foundation 6 is located in the ground 1 The depth H of the root cutting groove 2 can be made shallow to the extent of being exposed.
【0017】この結果、根切り溝2を掘溝する掘土の量
が少なくなり、浅い根切り底3に対して周囲の土崩れを
余り注意せずに栗石4の敷き詰め,捨てコンクリート5
の打設,仮枠8の組立て等を行うことができるため、工
事全体が面倒になることはない。As a result, the amount of soil excavated in the root-cutting groove 2 is reduced, and the gravel stones 4 are spread and the concrete 5 is discarded without paying attention to the surrounding landslide with respect to the shallow root-cutting bottom 3.
Since it is possible to perform the driving, the assembling of the temporary frame 8 and the like, the whole construction is not troublesome.
【0018】なお、根切り溝2の深さHを浅くするとい
うことは、布基礎6の基礎ばり部6bの背高を短くする
ことができるということであり、布基礎6を小型化し布
基礎6の施工コストを低減することを可能にする。Incidentally, making the depth H of the root cutting groove 2 shallow means that the height of the foundation flash portion 6b of the cloth foundation 6 can be shortened, and the cloth foundation 6 can be miniaturized. It is possible to reduce the construction cost of 6.
【0019】また、杭状体10の中心線Lと布基礎6の
基礎ばり部6bの中心線L’とを一致させておくと、耐
荷重性が良好となる。If the center line L of the pile-shaped body 10 and the center line L'of the foundation flash portion 6b of the cloth foundation 6 are made to coincide with each other, the load resistance becomes good.
【0020】図3は、本発明に係る基礎工法の第2実施
例を示すものである。FIG. 3 shows a second embodiment of the basic construction method according to the present invention.
【0021】この実施例では、根切り工事の前に杭状体
10を造成する工法を示してある。In this embodiment, a method of constructing the pile-shaped body 10 before the root cutting work is shown.
【0022】この実施例は、図3(A)に示すように、
根切り溝2を掘溝する前にオーガ11等で立坑12を削
孔し、図3(B)に示すように、立坑12に対して直ち
にコンクリートを打設して杭状体10を造成する。そし
て、図3(C)に示すように、杭状体10の造成の後に
根切り溝2を掘溝する。In this embodiment, as shown in FIG.
Before digging the root cutting groove 2, the vertical shaft 12 is drilled with an auger 11 or the like, and as shown in FIG. 3 (B), concrete is immediately poured into the vertical shaft 12 to form the pile-shaped body 10. . Then, as shown in FIG. 3C, the root-cutting groove 2 is formed after the formation of the pile-shaped body 10.
【0023】このような実施例によると、前述の第1実
施例と同様の作用,効果が奏されることに加えて、立坑
12,杭状体10を案内として根切り溝2を掘溝するこ
とができる利点が生ずる。According to such an embodiment, in addition to the same operation and effect as those of the first embodiment, the root cutting groove 2 is dug using the vertical shaft 12 and the pile-shaped body 10 as a guide. There are advantages that can be achieved.
【0024】以上、図示した実施例の外に、根切り工事
の終了後の布基礎6の施工の前に、捨てコンクリート
5,栗石4をの一部を破壊するようにして杭状体10を
造成することも可能である。As described above, in addition to the embodiment shown in the drawings, before the construction of the cloth foundation 6 after the completion of the root cutting work, the pile-shaped body 10 is formed by destroying a part of the discarded concrete 5 and the cobblestone 4. It is also possible to create.
【0025】[0025]
【発明の効果】以上のように本発明に係る基礎工法は、
杭状体,地盤の広い面積での摩擦により高い転倒抵抗力
が形成され、根切り溝の深さを深くする必要性ががなく
しかも特別に面倒な工事が要求されるわけでもないた
め、地震等による横力で生ずる転倒力に対する有効な転
倒抵抗力が形成される基礎を簡単な工事によって施工す
ることができる効果がある。As described above, the basic construction method according to the present invention is
Due to friction over a wide area of the piles and ground, high fall resistance is formed, there is no need to deepen the depth of the root cutting groove, and no particularly troublesome construction is required. There is an effect that a foundation on which an effective fall resistance against a fall force generated by a lateral force due to the above is formed can be constructed by a simple construction.
【0026】さらに、根切り溝の深さを浅くすることが
できるため、布基礎を小型化して布基礎の施工コストを
低減することができる効果がある。Further, since the depth of the root cutting groove can be made shallow, there is an effect that the cloth foundation can be downsized and the construction cost of the cloth foundation can be reduced.
【図1】本発明に係る基礎工法の第1実施例を示すもの
で、施工完了状態の断面図である。FIG. 1 is a cross-sectional view showing a first embodiment of a basic construction method according to the present invention, in a construction completed state.
【図2】図1の施工工程を示す各工程の断面図である。FIG. 2 is a cross-sectional view of each process showing the construction process of FIG.
【図3】本発明に係る基礎工法の第2実施例を示すもの
で、施工工程の断面図である。FIG. 3 shows a second embodiment of the basic construction method according to the present invention, and is a cross-sectional view of the construction process.
【図4】従来例を示す施工工程の断面図である。FIG. 4 is a sectional view of a construction process showing a conventional example.
【図5】他の従来例を示す施工工程の断面図である。FIG. 5 is a cross-sectional view of a construction process showing another conventional example.
【図6】図4,図5の従来例の施工完了状態の断面図で
ある。FIG. 6 is a sectional view of the conventional example of FIGS. 4 and 5 in a completed construction state.
1 地盤 2 根切り溝 3 根切り底 4 栗石 5 捨てコンクリート 6 布基礎 10 杭状体 12 立坑 1 Ground 2 Root Cutting Groove 3 Root Cutting Bottom 4 Kuriishi 5 Discarded Concrete 6 Cloth Foundation 10 Piles 12 Shafts
Claims (1)
めて捨てコンクリートを打設する根切り工事を施工して
から、捨てコンクリートの上に布基礎を施工する基礎工
法において、布基礎の施工の前に布基礎の下方となる地
盤に立坑を削孔し立坑の内部にコンクリートを打設して
杭状体を造成することを特徴とする基礎工法。1. A foundation construction method for constructing a cloth foundation on abandoned concrete after performing a root cutting construction in which crushed stones are laid on the root cutting bottom dug in the ground and waste concrete is placed. Before construction, a foundation method is characterized in that a vertical shaft is drilled in the ground below the fabric foundation and concrete is placed inside the vertical shaft to form a pile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5019622A JPH06212648A (en) | 1993-01-12 | 1993-01-12 | Foundation construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5019622A JPH06212648A (en) | 1993-01-12 | 1993-01-12 | Foundation construction |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06212648A true JPH06212648A (en) | 1994-08-02 |
Family
ID=12004295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5019622A Pending JPH06212648A (en) | 1993-01-12 | 1993-01-12 | Foundation construction |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06212648A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010106459A (en) * | 2008-10-28 | 2010-05-13 | Toyota Motor Corp | Pile foundation for building and building |
JP2022028575A (en) * | 2020-08-03 | 2022-02-16 | 一般社団法人住まい文化研究会 | Construction method of foundation and structure of foundation |
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1993
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---|---|---|---|---|
JPS4868609U (en) * | 1971-12-08 | 1973-08-31 | ||
JPS4892211U (en) * | 1972-02-05 | 1973-11-06 | ||
JPS555572U (en) * | 1978-06-28 | 1980-01-14 | ||
JPS5570855U (en) * | 1978-11-08 | 1980-05-15 | ||
JPH04231915A (en) * | 1990-06-20 | 1992-08-20 | Leslie A Novak | Portable chair being foldable |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010106459A (en) * | 2008-10-28 | 2010-05-13 | Toyota Motor Corp | Pile foundation for building and building |
JP2022028575A (en) * | 2020-08-03 | 2022-02-16 | 一般社団法人住まい文化研究会 | Construction method of foundation and structure of foundation |
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