JP2007247249A - Simple foundation and simple foundation installation method - Google Patents

Simple foundation and simple foundation installation method Download PDF

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JP2007247249A
JP2007247249A JP2006071642A JP2006071642A JP2007247249A JP 2007247249 A JP2007247249 A JP 2007247249A JP 2006071642 A JP2006071642 A JP 2006071642A JP 2006071642 A JP2006071642 A JP 2006071642A JP 2007247249 A JP2007247249 A JP 2007247249A
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pile
pile member
outer diameter
ground
main body
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Masao Kono
正男 河野
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KONO KOGYO KK
KOUNO KOGYO KK
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KONO KOGYO KK
KOUNO KOGYO KK
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<P>PROBLEM TO BE SOLVED: To provide a simple foundation which has flexibility, and relatively facilitates driving of pile members, to thereby ensure fixture thereof to the ground, and to provide a simple foundation installation method. <P>SOLUTION: According to the structure of the simple foundation, a main body 1 which bears a structure S is provided with pile member penetration portions 13, and the pile members 2 are inserted into the ground via the pile member penetration portions 13. Herein at least the two pile members 2 combined together as one set are provided for each pile member penetration portion 13, and the pile member having a smaller outer diameter out of the combined pile members function to penetrate the interior of the pile member having the larger outer diameter, and the outer diameter of the pile member having the smaller outer diameter is smaller than the inner diameter of the pile member having the larger outer diameter, and the length of the former is longer than that of the latter. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本願発明は、構造物を地上に構築する際に用いる簡易基礎、及び簡易基礎の施工方法に関するものである。   The present invention relates to a simple foundation used when constructing a structure on the ground and a method for constructing the simple foundation.

米国特許第5039256号明細書US Pat. No. 5,039,256

従来、公園における遊具や東屋、フェンス、仮設住宅などの比較的簡易な構造物に用いられる基礎には、地中に埋め込まれたコンクリートブロックなどが用いられてきた。   Conventionally, concrete blocks or the like embedded in the ground have been used for foundations used for relatively simple structures such as playground equipment in parks, eastern buildings, fences, and temporary housing.

これは、地中に埋めるだけのものであるため、強度的に不安のあるものであった。しかし、一般の建築物のようにコンクリートを打設した強固な基礎を築くには、重機による地盤の掘り返しが必要になるなど、工事が大掛かりになってしまい、施工コストの面でも不利になる。   Since this was only buried in the ground, it was uneasy in strength. However, in order to build a solid foundation in which concrete is cast like a general building, it is necessary to dig up the ground with heavy machinery, and the construction becomes large, which is disadvantageous in terms of construction cost.

ここで、特許文献1に示されたような簡易的な基礎構造が提案されている。これは図10に示すようなものであって、円筒状体101と杭部材102とが組み合わされたものであり、円筒状体101の内部にコンクリートを現場で詰めて使用するものである。この円筒状体101には、ガイドパイプ103が貫通するように配位されたものであって、杭部材102をこのガイドパイプ103を貫通させた後に、打撃により地中へと打ち込まれる。この打ち込まれた杭部材102の地盤に対する固着力により、円筒状体101が地盤に固定される。そして、このように固定された円筒状体101が構造物を支持することができる。   Here, a simple basic structure as shown in Patent Document 1 has been proposed. This is a combination of the cylindrical body 101 and the pile member 102 as shown in FIG. 10, and is used by filling the inside of the cylindrical body 101 with concrete in the field. The cylindrical body 101 is arranged so that the guide pipe 103 penetrates, and after the pile member 102 has penetrated the guide pipe 103, it is driven into the ground by striking. The cylindrical body 101 is fixed to the ground by the fixing force of the driven pile member 102 to the ground. And the cylindrical body 101 fixed in this way can support a structure.

ここで、地盤が軟弱である場合に上記の基礎構造を用いるには、杭部材102の長さを長くしたり、杭部材102の本数を増やすことにより、地盤に対する固着力を確保する必要がある。しかしながら、長い杭部材102を用いる場合、杭部材102が撓みやすいために取り扱いが困難である。つまり、地中に一度に打ち込むために大きな打撃力が必要であり、しかも、地中で先端が折れ曲がらないようにしながら打撃するということは、実際には不可能に近い。   Here, in order to use the above-described foundation structure when the ground is soft, it is necessary to secure the fixing force to the ground by increasing the length of the pile members 102 or increasing the number of the pile members 102. . However, when using the long pile member 102, since the pile member 102 is easy to bend, handling is difficult. That is, a large striking force is required to drive into the ground at once, and it is practically impossible to hit the ground while the tip is not bent.

また杭部材102の本数を増やす場合は、それに対応して専用の円筒状体101を用いる必要がある。よって、地質の違いにそれぞれ対応できる形態の円筒状体101がそれぞれ必要となり、製造・販売・管理のいずれの場面においても煩雑となってしまい、汎用性が低いという問題がある。   Moreover, when increasing the number of the pile members 102, it is necessary to use the cylindrical body 101 for exclusive use corresponding to it. Therefore, each of the cylindrical bodies 101 in a form that can cope with the difference in geology is required, which is complicated in any of the production, sales, and management situations, and there is a problem that versatility is low.

本願発明はこのことに鑑み、汎用性のあるものであり、杭部材の打ち込みが比較的容易であり、地盤への固定を確実になすことができる、簡易基礎及び簡易基礎の施工方法を提供することを課題とする。   In view of this, the present invention is versatile, provides a simple foundation and a method for constructing a simple foundation, in which driving of pile members is relatively easy and can be reliably fixed to the ground. This is the issue.

上記課題を解決するために、本願の請求項1に記載の発明は、地中に少なくとも一部が埋め込まれたことにより、地上に構築される構造物Sを支持することのできる簡易基礎において、本体部材1と杭部材2とを備え、本体部材1は、構造物Sを支持する部分であって、表面に設けられた入口穴13aと出口穴13bとが組み合わされてなる杭部材貫通部13を少なくとも3箇所に備え、上記の杭部材貫通部13における入口穴13aと出口穴13bとの間には、杭部材2を配位可能な空間が設けられ、杭部材2は、基端側が打撃されることにより、上記杭部材貫通部13の入口穴13aと出口穴13bとの間を通り、先端側が地中へと差し込まれるものであって、上記杭部材貫通部13の1箇所当たりに複数の杭部材2が1組として用いられ、上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通するものとされ、上記1組の杭部材の組み合わせのうちで最も内側を貫通する杭部材には、管状体あるいは中実の棒状体が用いられており、その他の杭部材には管状体が用いられており、上記1組の杭部材の組み合わせのうち、相対的に外径の小さい杭部材は、相対的に外径の大きい杭部材の内径よりも外径が小さく、相対的に外径の大きい杭部材よりも長さが長いものとされており、本体部材1の入口穴13aの中心と出口穴13bの中心とを結ぶ線が、少なくとも、上記1組の杭部材の組み合わせのうちで最も外径の大きい杭部材21の外径寸法分の距離を保つようにして、上記杭部材貫通部13が設けられたことを特徴とする簡易基礎を提供する。   In order to solve the above problems, the invention according to claim 1 of the present application is based on a simple foundation capable of supporting the structure S constructed on the ground by being at least partially embedded in the ground. The main body member 1 and the pile member 2 are provided, and the main body member 1 is a portion that supports the structure S, and a pile member penetration portion 13 that is formed by combining an inlet hole 13a and an outlet hole 13b provided on the surface. Are provided in at least three places, and a space in which the pile member 2 can be arranged is provided between the inlet hole 13a and the outlet hole 13b in the above-described pile member penetrating portion 13, and the pile member 2 is hit on the base end side. By doing so, it passes between the entrance hole 13a and the exit hole 13b of the said pile member penetration part 13, and a front end side is inserted into the ground, Comprising: It is plural per one place of the said pile member penetration part 13. The pile member 2 is used as one set Among the combinations of the one set of pile members, one pile member having a relatively small outer diameter penetrates the inside of one pile member having a relatively large outer diameter. A tubular member or a solid rod-like member is used as the pile member penetrating the innermost side of the combination of the pile members, and a tubular member is used as the other pile member. Of the pile member combinations, a pile member having a relatively small outer diameter has a smaller outer diameter than a pile member having a relatively large outer diameter and is longer than a pile member having a relatively large outer diameter. The pile member 21 having the largest outer diameter is at least the line connecting the center of the inlet hole 13a and the center of the outlet hole 13b of the main body member 1 among the combinations of the one set of pile members. The pile member penetrating portion 13 is provided so as to maintain a distance corresponding to the outer diameter of the pile member. Providing a simplified basis, characterized in that was.

また、本願の請求項2に記載の発明は、上記本体部材1が、上記杭部材2を支持するための埋め込み部11と、埋め込み部11の上方に設けられた、構造物Sを支持するための蓋部12とを有し、埋め込み部11は、上方に開口部11aが設けられており、蓋部12は、少なくとも下面が平面とされ、かつ、この下面が上記開口部11aの開口面積よりも大きな面積を有し、上記の埋め込み部11と蓋部12とは、固定ボルト3の締結によって一体とされるものであり、この固定ボルト3を貫通させるために、埋め込み部11の底部には埋め込み部側貫通穴11bが、蓋部には蓋部側貫通穴12aが、各々設けられており、上記固定ボルト3が上記の各貫通穴11b,12aに通された状態であって、かつ、締結が未だされていない状態においては、蓋部12が埋め込み部11に対して水平方向に移動可能であることを特徴とする、請求項1に記載の簡易基礎を提供する。   In the invention according to claim 2 of the present application, the main body member 1 supports the embedded portion 11 for supporting the pile member 2 and the structure S provided above the embedded portion 11. And the embedded portion 11 is provided with an opening 11a at the upper side. The lid 12 has at least a flat bottom surface, and the bottom surface is larger than the opening area of the opening 11a. The embedded portion 11 and the lid portion 12 are integrated by fastening the fixing bolt 3, and in order to allow the fixing bolt 3 to pass therethrough, The embedded portion side through hole 11b is provided with the lid portion side through hole 12a in the lid portion, and the fixing bolt 3 is passed through the through holes 11b and 12a, and In a state that has not been concluded yet Te is characterized in that the cover portion 12 is horizontally movable with respect to the embedding portion 11, provides a simple basis for claim 1.

また、本願の請求項3に記載の発明は、少なくとも上記杭部材2のうちで、内部に別の杭部材2が貫通するものの先端に土止め部4が設けられたものであり、この土止め部4は、当該杭部材2が地中へ差し込まれる際に、その先端の少なくとも一部を閉ざして、内部に侵入する土を少なくするためのものであり、上記に加えてこの土止め部4は、当該杭部材2の先端から、上記別の杭部材2が突出することを許容するものであることを特徴とする、請求項1または2に記載の簡易基礎を提供する。   Further, the invention according to claim 3 of the present application is that at least one of the pile members 2 through which another pile member 2 penetrates is provided with a soil retaining portion 4 at the tip thereof. When the pile member 2 is inserted into the ground, the portion 4 is for closing at least a part of the tip of the pile member 2 and reducing the amount of soil entering the interior. Provides a simple foundation according to claim 1 or 2, which allows the other pile member 2 to protrude from the tip of the pile member 2.

また、本願の請求項4に記載の発明は、各杭部材2の基端側に、引き抜きのための工具あるいは治具を係合可能な引掛部2aが設けられたことを特徴とする、請求項1〜3のいずれかに記載の簡易基礎を提供する。   The invention according to claim 4 of the present application is characterized in that a hooking portion 2a capable of engaging with a tool or jig for pulling out is provided on the base end side of each pile member 2. Item 4. A simple basis according to any one of Items 1 to 3.

また、本願の請求項5記載の発明は、地上に構築される構造物Sを支持するために、本体部材1と杭部材2とを備えた簡易基礎を地盤に固定する、簡易基礎の施工方法において、本体部材1は、表面に設けられた入口穴13aと出口穴13bとが組み合わされてなる杭部材貫通部13を備え、外径の異なる複数の杭部材2が1組として用いられ、上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通するものとされ、本体部材1を地面に配位するか、あるいは上記入口穴13aが露出した状態で一部を地中に埋め込み、まず、上記1組の杭部材の組み合わせのうちで最も外径の大きい杭部材21を、本体部材内に貫通させ、先端側を地中へと打ち込み、その後、次いで外径の大きい杭部材22を、既に先端側が地中へと差し込まれた杭部材21の基端側から内部に貫通させ、先端側を当該杭部材21の先端側より突出するように、地中へと打ち込むことを特徴とする、簡易基礎の施工方法を提供する。   The invention according to claim 5 of the present application is a simple foundation construction method in which a simple foundation having a main body member 1 and a pile member 2 is fixed to the ground in order to support a structure S constructed on the ground. The main body member 1 includes a pile member penetrating portion 13 formed by combining an inlet hole 13a and an outlet hole 13b provided on the surface, and a plurality of pile members 2 having different outer diameters are used as one set. Among the combination of one set of pile members, one pile member having a relatively small outer diameter penetrates the inside of one pile member having a relatively large outer diameter. Coordinated to the ground or partially embedded in the ground with the entrance hole 13a exposed. First, the pile member 21 having the largest outer diameter among the combinations of the one set of pile members is used as the main body member. Pierce inside and drive the tip side into the ground, then The pile member 22 having a large outer diameter is penetrated into the inside from the proximal end side of the pile member 21 whose distal end side has already been inserted into the ground, and the distal end side protrudes from the distal end side of the pile member 21. Provide a simple foundation construction method characterized by driving in.

本願の請求項1に記載の発明は、杭部材貫通部13の1箇所当たりにおいて、複数の杭部材2が1組として用いられ、上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通するものとされ、上記1組の杭部材の組み合わせのうち、相対的に外径の小さい杭部材は、相対的に外径の大きい杭部材の内径よりも外径が小さく、相対的に外径の大きい杭部材よりも長さが長いものとされたことから、相対的に外径の小さい1本の杭部材と、相対的に外径の大きい1本の杭部材とが一部で重なり合うものとできる。そして、本体部材1に近い側に配位される杭部材2の方が多く重なり合うものとできるため、杭部材2の曲げ強度やせん断強度を、本体部材1に近い側の方をより大きくでき、従来のように一定の外径を有する杭を地中に差し込んだ場合に比べると、より効果的に本体部材1を支持することができ、これにより、構造物Sの耐震・耐風強度を向上させることができたものである。
また、鋼材の定尺寸法よりも短い杭部材2で十分に強度を負担可能であるため、杭部材2の製造及び運搬が容易である。また、杭部材2の本数を増加させることによって、軟弱な地盤にも対応できるため、従来のように、地質に応じて多種の本体部材1を用意する必要もなく、汎用性の高い簡易基礎が提供できたものである。
In the invention according to claim 1 of the present application, a plurality of pile members 2 is used as one set per one place of the pile member penetrating portion 13, and among the combinations of the one set of pile members, the One pile member having a small diameter penetrates the inside of one pile member having a relatively large outer diameter, and a pile having a relatively small outer diameter is selected from the combination of the one set of pile members. The member has a relatively small outer diameter because the outer diameter is smaller than the inner diameter of the pile member having a relatively large outer diameter and is longer than the pile member having a relatively large outer diameter. One pile member and one pile member having a relatively large outer diameter can be partially overlapped. And since the pile member 2 coordinated closer to the side closer to the main body member 1 can be overlapped more, the bending strength and shear strength of the pile member 2 can be made larger on the side closer to the main body member 1, Compared to the case where a pile having a constant outer diameter is inserted into the ground as in the past, the main body member 1 can be supported more effectively, thereby improving the earthquake resistance and wind resistance strength of the structure S. Was able to.
Moreover, since the pile member 2 shorter than the standard size of the steel material can sufficiently bear the strength, the pile member 2 can be easily manufactured and transported. Moreover, since it can respond also to a soft ground by increasing the number of the pile members 2, it is not necessary to prepare various main body members 1 according to the geology as in the past, and a simple and highly versatile foundation is provided. We were able to provide it.

また、請求項2に記載の発明は、上記の効果に加え、蓋部12が埋め込み部11に対して水平方向に移動可能であることから、簡易基礎が地盤に設置された後の状態でも、構造物Sの設置予定位置に合わせて蓋部12を水平移動させ、位置が揃ったところで固定ボルト3を締結し、埋め込み部11と蓋部12との位置関係を固定させることができる。このように、構造物Sに対しての位置合わせが容易であるため、構造物Sの側にも簡易基礎の側にも無理を与えることがなく、構造物Sの据付を容易になすことができたものである。   Further, in addition to the above effect, the invention according to claim 2 is capable of moving the lid portion 12 in the horizontal direction with respect to the embedded portion 11, so that even in a state after the simple foundation is installed on the ground, The lid 12 is horizontally moved in accordance with the planned installation position of the structure S, and the fixing bolt 3 is fastened when the positions are aligned, so that the positional relationship between the embedded portion 11 and the lid 12 can be fixed. Thus, since the alignment with respect to the structure S is easy, neither the structure S side nor the simple foundation side is unreasonable, and the structure S can be easily installed. It was made.

また、請求項3に記載の発明は、請求項1または2に記載の発明の効果に加え、少なくとも上記杭部材2のうちで、内部に別の杭部材2が貫通するものの先端に土止め部4が設けられたことから、杭部材2が管状体であっても、内部の空間に、別の杭部材2が貫通することの支障となる程度に土が入り込んでしまうことを防止できる。そのため、相対的に外径の大きい杭部材2の先端に至るまでは、相対的に外径の小さい杭部材2をほぼ無抵抗で差し込むことができる。加えて、途中までは相対的に外径の大きい杭部材2が相対的に外径の小さい杭部材2のガイドとなり得る。よって、実際に地盤の抵抗を受けつつ杭部材2を差し込むことになるのは、相対的に外径の大きい杭部材2の先端から地中に飛び出た区間のみであるため、従来のように長い杭部材の全体を単独で地中に差し込むものに比べ、はるかに容易に杭部材2を差し込むことができたものである。   Moreover, in addition to the effect of the invention of Claim 1 or 2, the invention of Claim 3 is the earth retaining part at the front-end | tip of what the other pile member 2 penetrates inside at least among the said pile members 2. Since 4 is provided, even if the pile member 2 is a tubular body, it is possible to prevent the soil from entering the internal space to the extent that the other pile member 2 is obstructed. Therefore, the pile member 2 having a relatively small outer diameter can be inserted almost without resistance until the tip of the pile member 2 having a relatively large outer diameter is reached. In addition, up to the middle, the pile member 2 having a relatively large outer diameter can serve as a guide for the pile member 2 having a relatively small outer diameter. Accordingly, the pile member 2 is actually inserted while receiving the resistance of the ground because it is only a section protruding from the tip of the pile member 2 having a relatively large outer diameter into the ground. Compared with what inserts the whole pile member in the ground independently, the pile member 2 could be inserted much more easily.

また、請求項4に記載の発明は、請求項1〜3のいずれかに記載の発明の効果に加え、引き抜きのための工具あるいは治具を係合可能な引掛部2aが設けられたことから、この引掛部2aに工具あるいは治具を係合させることにより、容易に地中から杭部材2を引き抜くことができる。よって、この簡易基礎を仮設構造物に用いる基礎に用いた場合であっても、撤去作業が容易とされたものである。   In addition to the effect of the invention described in any one of claims 1 to 3, the invention described in claim 4 is provided with a hook portion 2a capable of engaging with a tool or jig for extraction. The pile member 2 can be easily pulled out from the ground by engaging a tool or a jig with the hook portion 2a. Therefore, even if this simple foundation is used as a foundation used for a temporary structure, removal work is facilitated.

また、請求項5に記載の発明は、上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通するものとされ、本体部材1を地面に配位するか、あるいは上記入口穴13aが露出した状態で一部を地中に埋め込み、まず、上記1組の杭部材の組み合わせのうちで最も外径の大きい杭部材21を、本体部材内に貫通させ、先端側を地中へと打ち込み、その後、次いで外径の大きい杭部材22を、既に先端側が地中へと差し込まれた杭部材21の基端側から内部に貫通させ、先端側を当該杭部材21の先端側より突出するように、地中へと打ち込むことから、相対的に外径の小さい1本の杭部材と、相対的に外径の大きい1本の杭部材とが一部で重なり合うものとできる。そして、本体部材1に近い側に配位される杭部材2の方が多く重なり合うものとできるため、杭部材2の曲げ強度やせん断強度を、本体部材1に近い側の方をより大きくでき、従来のように一定の外径を有する杭を地中に差し込んだ場合に比べると、より効果的に本体部材1を支持することができ、これにより、構造物Sの耐震・耐風強度を向上させることができる簡易基礎の施工方法が提供できたものである。   Moreover, invention of Claim 5 is one pile member with a relatively small outer diameter among the combination of said 1 set of pile members, and is a pile member with a relatively large outer diameter. The main body member 1 is arranged on the ground, or a part of the main body member 1 is buried in the ground with the inlet hole 13a exposed. The pile member 21 having the largest outer diameter is penetrated into the main body member, the tip side is driven into the ground, and then the pile member 22 having the largest outer diameter is already inserted into the ground. 21 is penetrated from the base end side to the inside, and the tip end side is driven into the ground so as to protrude from the tip end side of the pile member 21, so that one pile member having a relatively small outer diameter, In particular, one pile member having a large outer diameter can partially overlap. And since the pile member 2 coordinated closer to the side closer to the main body member 1 can be overlapped more, the bending strength and shear strength of the pile member 2 can be made larger on the side closer to the main body member 1, Compared to the case where a pile having a constant outer diameter is inserted into the ground as in the past, the main body member 1 can be supported more effectively, thereby improving the earthquake resistance and wind resistance strength of the structure S. It was possible to provide a simple foundation construction method.

以下、図面に基づき本願発明の一実施例をとりあげて説明する。図1〜図3は本例の簡易基礎を示し、図4は本例の土止めキャップを示す。   An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show the simple foundation of this example, and FIG. 4 shows the earth retaining cap of this example.

なお、本願発明に係る特許請求の範囲及び以下の記載における、「先端」とは、本体部材1を基準として地中へ向かう方向における、本体部材1から遠い側の端部を指し、「基端」とはその逆の端部を示す。また、「外径」及び「内径」とは、断面寸法を指すものであり、円形断面の径寸法に限定されるものではない。   In the claims and the following description relating to the present invention, the “tip” refers to an end portion on the side farther from the main body member 1 in the direction toward the ground with respect to the main body member 1. "Indicates the opposite end. The “outer diameter” and “inner diameter” refer to cross-sectional dimensions, and are not limited to the circular cross-sectional diameter dimensions.

本願発明に係る簡易基礎は、図1及び図2に示すように、地中に少なくとも一部が埋め込まれたことにより、地上に構築される構造物Sを支持することのできる本体部材1と、この本体部材1を地盤に対して固定するために地中に差し込まれる、複数の杭部材2とを備えたものである。   As shown in FIGS. 1 and 2, the simple foundation according to the present invention includes a body member 1 that can support a structure S constructed on the ground by being at least partially embedded in the ground, The main body member 1 includes a plurality of pile members 2 inserted into the ground to fix the main body member 1 to the ground.

本体部材1は、金属や合成樹脂などからなるブロック状体である。この本体部材1は、下部が浅い地中に埋め込まれるものであり、上部が露出した状態となる場合があって、外気や雨水に触れるものであることから、耐候性及び耐腐食性に優れる材質とすることが望ましい。なお、コンクリート製とすることも可能であるが、重量が大きくなること、及び、誤って落下させた際に割れる恐れがあるため、あまり好ましくない。本例では、中空で略球形である鋼製ブロックとされており、表面には樹脂ライニングが施されている。表面処理は樹脂ライニングの他、亜鉛などのめっきや塗装によっても良い。   The main body member 1 is a block-shaped body made of metal, synthetic resin, or the like. The main body member 1 is embedded in a shallow ground, and the upper portion may be exposed, and is exposed to the outside air or rainwater. Therefore, the main body member 1 is excellent in weather resistance and corrosion resistance. Is desirable. Although it can be made of concrete, it is not preferable because it increases the weight and may break when it is accidentally dropped. In this example, the steel block is hollow and has a substantially spherical shape, and a resin lining is applied to the surface. In addition to resin lining, the surface treatment may be performed by plating or coating with zinc or the like.

本例の本体部材1は上記のように中空とされたことから、軽量であり強度面でも優れている。よって、車両や重機を用いずに人力で現場に搬入することも可能である。また、この本体部材1は、構造物Sの重量や大きさによって、構造物Sを支持できる最適な大きさのものを提供できる。   Since the main body member 1 of this example is hollow as described above, it is lightweight and excellent in strength. Therefore, it is also possible to carry in the site manually without using vehicles or heavy machinery. In addition, the main body member 1 can be provided with an optimal size that can support the structure S depending on the weight and size of the structure S.

この本体部材1の形態は、本例のような略球形の他、多面体、筒状体、紡錘形、弾丸形など、種々の形態にて実施することが可能である。ここで、その他の形態の例を図8及び図9に示す。図8に示すものは、側面を一周するようにリブ11cを設けたものであり、このリブ11cが地盤に対する固着力の一部を負担する。このリブ11cに限らず、本体部材1には種々の形態の凹凸を設けて良い。また、図9に示すものは、平面視が略四角形の略多面体とされたものである。このように本体部材1を略多面体とした場合は、平面状に形成された側面に入口穴13a及び出口穴13bを形成することが可能である。よって、入口穴13a及び出口穴13bを設ける際の位置決めが比較的容易であるという利点を有する。   The main body member 1 can be implemented in various forms such as a polyhedron, a cylindrical body, a spindle shape, and a bullet shape in addition to the substantially spherical shape as in this example. Here, examples of other forms are shown in FIGS. In the structure shown in FIG. 8, a rib 11c is provided so as to go around the side surface, and this rib 11c bears a part of the adhering force to the ground. Not only the rib 11c but also the body member 1 may be provided with various forms of irregularities. Further, what is shown in FIG. 9 is a substantially polyhedron having a substantially square shape in plan view. Thus, when the main body member 1 is a substantially polyhedron, the inlet hole 13a and the outlet hole 13b can be formed on the side surface formed in a planar shape. Therefore, it has the advantage that positioning at the time of providing the entrance hole 13a and the exit hole 13b is relatively easy.

本例の本体部材1は、図1及び図2に示すように、埋め込み部11と蓋部12との2つのパーツから構成されている。埋め込み部11は中空の略球状のものであって、後述するように杭部材2を配位可能な空間が内部に存在する。そして上方が水平方向に切り欠かれており、開口部11aが形成されている。この埋め込み部11は、使用時において少なくとも一部が地中に埋め込まれて杭部材2が支持される。   As shown in FIGS. 1 and 2, the main body member 1 of this example is composed of two parts, an embedded portion 11 and a lid portion 12. The embedded portion 11 is a hollow, substantially spherical shape, and has a space in which the pile member 2 can be coordinated as described later. And the upper part is notched in the horizontal direction, and the opening part 11a is formed. At the time of use, at least a part of the embedded portion 11 is embedded in the ground to support the pile member 2.

上記のように埋め込み部11は中空とされているため、杭部材2の配位されない部分にも空間が存在しているが、本体部材1をコンクリート製とした場合などでは、杭部材2が配位される部分のみに空間が設けられ、その他の部分は中実であっても良い。   Since the embedded portion 11 is hollow as described above, there is a space in the portion where the pile member 2 is not coordinated. However, when the main body member 1 is made of concrete, the pile member 2 is arranged. A space may be provided only in the portion that is positioned, and the other portion may be solid.

蓋部12は、埋め込み部11の上方に設けられたものであって、上記開口部11aを覆うことのできるものである。開口部11aを覆うため、蓋部12の少なくとも下面は平面とされている。本例では円板状体とされている。また、後述のように、埋め込み部11に対して蓋部12が水平方向に移動可能とされるため、この移動距離の分、上記開口部の開口面積11aよりもを大きな面積を有するものとされている。   The lid portion 12 is provided above the embedded portion 11 and can cover the opening portion 11a. In order to cover the opening 11a, at least the lower surface of the lid 12 is a flat surface. In this example, it is a disk-shaped body. Further, as will be described later, since the lid 12 is movable in the horizontal direction with respect to the embedded portion 11, the opening has an area larger than the opening area 11a of the opening by the amount of the moving distance. ing.

上記の埋め込み部11と蓋部12とは、図2に示すように、1本の固定ボルト3の締結によって一体とされる。よって、この固定ボルト3を貫通させるために、埋め込み部11の底部には埋め込み部側貫通穴11bが、蓋部12には固定支持部側貫通穴12aが、各々設けられている。本例では、いずれの貫通穴11b,12aも埋め込み部11と蓋部12の、平面視における略中央に設けられている。これらの貫通穴11b,12aは、後述のように固定ボルト3が傾斜することにより、蓋部12を水平方向にずらせることができるように、固定ボルト3の軸径よりもやや大きい穴径とされている。   As shown in FIG. 2, the embedded portion 11 and the lid portion 12 are integrated with each other by fastening one fixing bolt 3. Therefore, in order to allow the fixing bolt 3 to pass through, the embedded portion side through hole 11 b is provided in the bottom portion of the embedded portion 11, and the fixed support portion side through hole 12 a is provided in the lid portion 12. In this example, any of the through holes 11b and 12a is provided in the approximate center of the embedded portion 11 and the lid portion 12 in plan view. These through holes 11b and 12a have a slightly larger hole diameter than the axial diameter of the fixing bolt 3 so that the lid 12 can be displaced in the horizontal direction by tilting the fixing bolt 3 as described later. Has been.

なお本例では、構造物Sと本体部材1とを連結するための構造物連結金具5が蓋部12に取り付けられる。この取り付けは、構造物連結金具5に上記の固定ボルト3が通されることによってなされる。   In this example, the structure connecting metal fitting 5 for connecting the structure S and the main body member 1 is attached to the lid 12. This attachment is made by passing the fixing bolt 3 through the structure connecting fitting 5.

ここで、固定ボルト3が上記の各貫通穴11b,12aに通された状態であり、かつ、締結が未だされていない状態においては、固定ボルト3と上記の各貫通穴11b,12aとの遊び、及び、埋め込み部11の特に底部と蓋部12との距離に応じて、蓋部12が埋め込み部11に対して水平方向に移動可能な状態となる。よって、簡易基礎が地盤に設置された後の状態でも、構造物Sの設置予定位置に合わせて蓋部12を水平移動させ、位置が揃ったところで固定ボルト3を締結し、埋め込み部11と蓋部12との位置関係を固定させることができる。このように、構造物Sに対しての位置合わせが容易であるため、構造物Sの側にも簡易基礎の側にも無理を与えることがなく、構造物Sの据付を容易になすことができる。   Here, in a state where the fixing bolt 3 is passed through each of the through holes 11b and 12a and the fastening bolt 3 is not yet fastened, play between the fixing bolt 3 and each of the through holes 11b and 12a is performed. And, according to the distance between the bottom portion of the embedding portion 11 and the lid portion 12, the lid portion 12 can move in the horizontal direction with respect to the embedding portion 11. Therefore, even after the simple foundation is installed on the ground, the lid 12 is moved horizontally in accordance with the planned installation position of the structure S, and the fixing bolt 3 is fastened when the positions are aligned, and the embedded portion 11 and the lid The positional relationship with the part 12 can be fixed. Thus, since the alignment with respect to the structure S is easy, neither the structure S side nor the simple foundation side is unreasonable, and the structure S can be easily installed. it can.

埋め込み部11の表面には、貫通穴である入口穴13aと出口穴13bとが設けられている。上記のように、この入口穴13aと出口穴13bとの間に空間が存在するため、図2に示すように、杭部材2を入口穴13aから出口穴13bへと通すことができる。この入口穴13aと出口穴13bとの組み合わせにより杭部材貫通部13が構成されている。本例では、この杭部材貫通部13が4箇所に備えられている。つまり、本例の本体部材1においては杭部材2を4組取り付けることができる。なお、杭部材2を最低限3組使用すれば、本体部材1を地盤に対して固定することが可能であるから、杭部材貫通部13を少なくとも3箇所に備えたものであれば良い。   An inlet hole 13a and an outlet hole 13b, which are through holes, are provided on the surface of the embedded portion 11. As described above, since there is a space between the inlet hole 13a and the outlet hole 13b, the pile member 2 can be passed from the inlet hole 13a to the outlet hole 13b as shown in FIG. The pile member penetration part 13 is comprised by the combination of this entrance hole 13a and the exit hole 13b. In this example, this pile member penetration part 13 is provided in four places. That is, in the main body member 1 of this example, four sets of pile members 2 can be attached. If at least three sets of pile members 2 are used, the main body member 1 can be fixed to the ground. Therefore, it is sufficient if the pile member penetration portions 13 are provided at least at three locations.

本例における本体部材1では、上記のように、中空の略球状体の表面に入口穴13a及び出口穴13bが設けられたものであるため、入口穴13aと出口穴13bとの間には、杭部材2を入口穴13aから出口穴13bへとガイドするための部材は設けられていない。よって実際の施工の際において、杭部材2を入口穴13aと出口穴13bとの間に通すためには、図6に示すように、蓋部12を取り付けない状態の埋め込み部11のみをまず地盤に配位した状態とし、埋め込み部11の開口部11a越しに出口穴13bを目視確認できるようにしておき、入口穴13aから出口穴13bへと杭部材2を通す。   In the main body member 1 in this example, since the inlet hole 13a and the outlet hole 13b are provided on the surface of the hollow substantially spherical body as described above, between the inlet hole 13a and the outlet hole 13b, A member for guiding the pile member 2 from the inlet hole 13a to the outlet hole 13b is not provided. Therefore, in the actual construction, in order to pass the pile member 2 between the inlet hole 13a and the outlet hole 13b, as shown in FIG. 6, only the embedded part 11 without the cover part 12 attached is first grounded. The outlet hole 13b can be visually confirmed through the opening 11a of the embedded portion 11, and the pile member 2 is passed from the inlet hole 13a to the outlet hole 13b.

なお、特許文献1に記載の基礎構造にて用いられているものと同様に、本体部材1の入口穴13aと出口穴13bとの間に、各穴間の距離よりもやや長い寸法を有するガイドパイプを配位しておき、このガイドパイプの内部に杭部材2を通す構造としても良い。こうした場合、上記のような目視確認を要さずに、入口穴13aから出口穴13bへと杭部材2を通すことができる。   In addition, the guide which has a dimension a little longer than the distance between each hole between the entrance hole 13a of the main body member 1 and the exit hole 13b similarly to what is used with the basic structure of patent document 1 is shown. It is good also as a structure which coordinates a pipe and passes the pile member 2 inside this guide pipe. In such a case, the pile member 2 can be passed from the inlet hole 13a to the outlet hole 13b without the need for visual confirmation as described above.

また、本例における杭部材貫通部13の各々は、図3に示すように、入口穴13aの中心と出口穴13bの中心とを結ぶ線が、少なくとも、最も外径の大きい杭部材である、第1杭部材21の外径寸法分の距離を保つようにして、入口穴13aと出口穴13bとが形成されたことにより杭部材2同士が干渉しないものとされている。なお本例では、図2に示すように、本体部材1の中央縦方向に固定ボルト3が取り付けられるため、図3に示すように、この固定ボルト3にも干渉しないよう杭部材貫通部13が設けられる必要がある。   Moreover, as shown in FIG. 3, each of the pile member penetration part 13 in this example is a pile member with the largest outer diameter at least as a line connecting the center of the inlet hole 13a and the center of the outlet hole 13b. The pile members 2 do not interfere with each other because the entrance hole 13a and the exit hole 13b are formed so as to maintain a distance corresponding to the outer diameter of the first pile member 21. In this example, as shown in FIG. 2, the fixing bolt 3 is attached in the central longitudinal direction of the main body member 1, and therefore, as shown in FIG. 3, the pile member through-hole 13 is provided so as not to interfere with the fixing bolt 3. Need to be provided.

杭部材2は、基端側が打撃されることにより、上記の入口穴13aと出口穴13bとの間を通り、先端側が地中へと差し込まれるものである。本願発明では、杭部材貫通部13の1箇所当たりに複数の杭部材2が1組として用いられるものであるが、本例においては、第1杭部材21、第2杭部材22、第3杭部材23の3本が1組として用いられている。   When the pile member 2 is hit on the base end side, the pile member 2 passes between the inlet hole 13a and the outlet hole 13b, and the distal end side is inserted into the ground. In this invention, although the several pile member 2 is used as 1 set per 1 place of the pile member penetration part 13, in this example, the 1st pile member 21, the 2nd pile member 22, the 3rd pile Three members 23 are used as one set.

本例の杭部材2は、第1杭部材21〜第3杭部材23のいずれも直線状とされた管状体が用いられている。なお、上記杭部材の組み合わせのうちで最も内側を貫通する杭部材2(本例においては第3杭部材23)については管状体ではなく、中実の棒状体であっても良い。また、直線状のものに限られず、地中への差し込みが困難にならない程度に湾曲したものであっても良い。また、円形断面のものに限られず、四角形などの多角形断面を有するものであっても良い。また、側面に地盤との固着力を強めるための凹凸や、内部に土の侵入がなされない程度の貫通穴を設けたものであっても良い。また、本例の杭部材2には外径が一定である直管を用いたが、外径を変化させたテーパ管を用いても良い。   As the pile member 2 of this example, a tubular body in which all of the first pile member 21 to the third pile member 23 are linear is used. In addition, about the pile member 2 (3rd pile member 23 in this example) which penetrates innermost among the combination of the said pile member, a solid rod-shaped body may be sufficient instead of a tubular body. Moreover, it is not restricted to a linear thing, You may be curved so that it may not become difficult to insert in the ground. Moreover, it is not restricted to a circular cross section, and may have a polygonal cross section such as a quadrangle. Moreover, the unevenness | corrugation for strengthening the adhering force with the ground may be provided in the side surface, and the through-hole of the grade which does not allow soil to enter may be provided inside. Moreover, although the straight pipe with a constant outer diameter was used for the pile member 2 of this example, you may use the taper pipe which changed the outer diameter.

上記の杭部材2(第1杭部材21〜第3杭部材23)はいずれも、上記のように入口穴13a及び出口穴13bを通すものであるため、これらの穴径よりも小さい外径を有する。なお、上記のように本体部材1にガイドパイプが配位される場合にあっては、このガイドパイプの内径よりも小さい外径を有するものとされる。   Since the above-mentioned pile members 2 (the first pile member 21 to the third pile member 23) all pass through the inlet hole 13a and the outlet hole 13b as described above, the outer diameter is smaller than these hole diameters. Have. In addition, when a guide pipe is coordinated to the main body member 1 as mentioned above, it shall have an outer diameter smaller than the inner diameter of this guide pipe.

また、この杭部材2は、本例では炭素鋼、ステンレス鋼などからなる金属製の管状体が用いられたものとされているが、材質については、アルミニウム合金、銅合金、FRP、カーボンファイバー製のものなど、地中への差し込みの際の抵抗が負担できるものであれば、種々のものを選択できる。   In this example, the pile member 2 is made of a metal tubular body made of carbon steel, stainless steel, etc., and the material is aluminum alloy, copper alloy, FRP, carbon fiber. Various things can be selected as long as they can bear the resistance when inserted into the ground.

本例の杭部材2は、長さについては第1杭部材21が最も短く、第3杭部材23が最も長いものとされている。例えば、第1杭部材21を1m、第2杭部材22を2m、第3杭部材23を3mとする。また、外径については第2杭部材22が第1杭部材21の内径よりも小さく、かつ、第3杭部材23が第2杭部材22の内径よりも小さくされている。つまり、杭部材貫通部13の1箇所当たりにおける1組の杭部材の組み合わせのうち、相対的に外径の小さい杭部材は、相対的に外径の大きい杭部材の内径よりも外径が小さく、相対的に外径の大きい杭部材よりも長さが長いものとされている。   In the pile member 2 of this example, the first pile member 21 is the shortest and the third pile member 23 is the longest in length. For example, the first pile member 21 is 1 m, the second pile member 22 is 2 m, and the third pile member 23 is 3 m. Further, the outer diameter of the second pile member 22 is smaller than the inner diameter of the first pile member 21, and the third pile member 23 is smaller than the inner diameter of the second pile member 22. That is, among the combination of one set of pile members per one place of the pile member penetration portion 13, the pile member having a relatively small outer diameter has a smaller outer diameter than the inner diameter of the pile member having a relatively large outer diameter. The length is longer than the pile member having a relatively large outer diameter.

よって、上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通可能である。本例の杭部材2においては、図2に示すように、第2杭部材22が第1杭部材21の内部を貫通し、第3杭部材23が第2杭部材22の内部を貫通する。そしてこの貫通の際には、第1杭部材21の先端から第2杭部材22が突出し、第2杭部材22の先端から第3杭部材23が突出する。   Therefore, among the combinations of the one set of pile members, one pile member having a relatively small outer diameter can penetrate the inside of one pile member having a relatively large outer diameter. In the pile member 2 of this example, as shown in FIG. 2, the second pile member 22 penetrates the inside of the first pile member 21, and the third pile member 23 penetrates the inside of the second pile member 22. And in this penetration, the 2nd pile member 22 protrudes from the front-end | tip of the 1st pile member 21, and the 3rd pile member 23 protrudes from the front-end | tip of the 2nd pile member 22.

このように、上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材と、相対的に外径の大きい1本の杭部材とが一部で重なり合う。本例では、図2に示すように、第1杭部材21の全長分において第1杭部材21〜第3杭部材23の3本が重なり合い、第2杭部材22の第1杭部材21から突出した区間分において第2杭部材22と第3杭部材23の2本が重なり合う。このように、本体部材1に近い側に配位される杭部材2の方が多く重なり合うものとできるため、部分的に杭部材2の曲げ強度やせん断強度を大きくでき、杭部材2を地中に固定した際に本体部材1を確実に固定することができる。そして、従来においては、鋼材の定尺寸法(5.5m)を超えた、7m程度の特別な杭部材を必要とした場合があったが、本願発明に係る簡易基礎では、定尺寸法よりも短い杭部材2で、十分に強度を負担可能であり、そのため、杭部材2の製造及び運搬が容易である。また、杭部材2の本数を増加させることによって、軟弱な地盤にも対応できるため、従来のように、地質に応じて多種の本体部材1を用意する必要もなく、汎用性の高いものとできる。   Thus, among the combinations of the one set of pile members, one pile member having a relatively small outer diameter and one pile member having a relatively large outer diameter partially overlap each other. In this example, as shown in FIG. 2, the first pile member 21 to the third pile member 23 overlap in the entire length of the first pile member 21, and protrude from the first pile member 21 of the second pile member 22. Two pieces, the second pile member 22 and the third pile member 23, overlap each other in the section. In this way, since the pile members 2 arranged closer to the side closer to the main body member 1 can be overlapped more, the bending strength and shear strength of the pile members 2 can be partially increased, and the pile members 2 can be grounded. The main body member 1 can be reliably fixed when fixed to. And in the past, there was a case where a special pile member of about 7 m exceeding the standard size (5.5 m) of the steel material was required, but in the simple foundation according to the present invention, it was more than the standard size. The short pile member 2 can sufficiently bear the strength, and hence the pile member 2 can be easily manufactured and transported. Moreover, since it can respond also to a soft ground by increasing the number of the pile members 2, unlike the past, it is not necessary to prepare various main body members 1 according to the geology, and can be highly versatile. .

本例の杭部材2の基端側には引掛部2aが設けられている。この引掛部2aは、地中に差し込まれた状態にある杭部材2を地中から引き抜くための工具あるいは治具を係合可能とした部分である。本例においては、各杭部材2(第1杭部材21〜第3杭部材23)の基端に設けられた、径方向への貫通穴とされている。この引掛部2aは、図2に示すように、各杭部材2が地中に差し込まれた際においても、本体部材1から突出した状態で残しておくことが望ましい。この引掛部2aに工具あるいは治具を係合させることにより、容易に地中から杭部材2を引き抜くことができるため、本願発明に係る簡易基礎を仮設構造物に用いる基礎に用いた場合であっても、撤去作業が容易にできる。この引掛部2aは本例の貫通穴の他、杭部材2の側面に設けられた溝や突起など、種々の形態にて実施できる。   A hook portion 2a is provided on the base end side of the pile member 2 of this example. This hook part 2a is a part which can engage with a tool or jig for pulling out the pile member 2 in a state of being inserted into the ground from the ground. In this example, it is set as the through-hole to the radial direction provided in the base end of each pile member 2 (1st pile member 21-3rd pile member 23). As shown in FIG. 2, it is desirable that the hook portion 2 a be left protruding from the main body member 1 even when each pile member 2 is inserted into the ground. Since the pile member 2 can be easily pulled out from the ground by engaging a tool or a jig with the hook portion 2a, the simple foundation according to the present invention is used for a foundation used for a temporary structure. However, it can be removed easily. The hook portion 2a can be implemented in various forms such as a groove and a protrusion provided on the side surface of the pile member 2 in addition to the through hole of this example.

そして、杭部材2の先端には土止め部4が設けられる。本例では、杭部材2の先端に取り付け可能とされた土止めキャップ4として実施されている。この土止めキャップ4は、上記1組の杭部材の組み合わせにつき1つが用いられるもので、図4(A)に示すように、杭部材2の内部に一部が差し込まれる杭部材係合部分41と、杭部材2の先端よりも外側に露出する先端部分42とを備えたものである。   A soil retaining portion 4 is provided at the tip of the pile member 2. In this example, it is implemented as the earth retaining cap 4 that can be attached to the tip of the pile member 2. One earth retaining cap 4 is used for each combination of the above-mentioned one set of pile members. As shown in FIG. 4 (A), a pile member engaging portion 41 into which a part is inserted into the pile member 2. And the front-end | tip part 42 exposed outside the front-end | tip of the pile member 2 is provided.

先端部分42は、上記1組の杭部材の組み合わせのうちで最も外側に配位される杭部材2の内径よりも大きな外径を有する部分である。本例では、第1杭部材21の内径よりも大きな外径を有する略円錐状の部分である。   The tip portion 42 is a portion having an outer diameter larger than the inner diameter of the pile member 2 that is coordinated on the outermost side in the combination of the one set of pile members. In this example, it is a substantially conical portion having an outer diameter larger than the inner diameter of the first pile member 21.

杭部材係合部分41は、各杭部材2の内径と一致する外径を有する係合位置の各々にて、各杭部材2と係合し、これらの係合位置における外径が、杭部材係合部分41における基端側よりも同先端側の方が大きいものとされている。本例の土止めキャップ4では、図4(A)に示すように、先端側から順に第1部分41a、第2部分41b、第3部分41cの3つの部分が設けられており、基端側から先端側へと順次外径が拡大するようにして、同心の円筒状体が積み重ねられたような形態とされている。第1部分41aは第1杭部材21の先端が係合する部分であって、係合位置41dは第1部分41aの先端の位置(先端部分42との間の段差)と一致している。第2部分41bは第2杭部材22の先端が係合する部分であって、係合位置41eは第2部分41bの先端の位置(第1部分41aとの間の段差)と一致している。第3部分41cは第3杭部材23の先端が係合する部分であって、係合位置41fは第3部分41cの先端の位置(第2部分41bとの間の段差)と一致している。   The pile member engaging portion 41 is engaged with each pile member 2 at each of the engagement positions having an outer diameter that matches the inner diameter of each pile member 2, and the outer diameter at these engagement positions is the pile member. The distal end side of the engaging portion 41 is larger than the proximal end side. In the earth retaining cap 4 of this example, as shown in FIG. 4A, three parts of a first part 41a, a second part 41b, and a third part 41c are provided in order from the distal end side, and the proximal end side Concentric cylindrical bodies are stacked so that the outer diameter gradually increases from the tip to the tip side. The first portion 41a is a portion with which the tip of the first pile member 21 is engaged, and the engagement position 41d coincides with the position of the tip of the first portion 41a (step difference between the tip portion 42). The 2nd part 41b is a part which the front-end | tip of the 2nd pile member 22 engages, Comprising: The engaging position 41e corresponds with the position (step difference between the 1st part 41a) of the front-end | tip of the 2nd part 41b. . The 3rd part 41c is a part which the front-end | tip of the 3rd pile member 23 engages, Comprising: 41f of engagement positions correspond with the position (step difference between the 2nd parts 41b) of the front-end | tip of the 3rd part 41c. .

この土止めキャップ4は、まず、杭部材係合部分41の第1部分41aが第1杭部材21の先端と係合し、先端部分42が露出した状態で、第1杭部材21と共に地中へ差し込まれる(図6(A)参照)。そして次の段階で、第2杭部材22が第1杭部材21を貫通し、第2杭部材22の先端が第1杭部材21の先端から飛び出る際に、杭部材係合部分41の第2部分41bが第2杭部材22の先端と係合することで、土止めキャップ4が第2杭部材22の先端に乗り移る(図6(B)参照)。そして上記と同様にして、土止めキャップ4は第3杭部材23の先端に乗り移る(図2参照)。つまりこの土止めキャップ4は、上記1組の杭部材の組み合わせにおける各杭部材2が順次地中に差し込まれるに伴い、相対的に外径の大きい杭部材2の先端から、相対的に外径の小さい杭部材2の先端へと順次乗り移るものである。   First, the earth retaining cap 4 is formed in the ground together with the first pile member 21 with the first portion 41a of the pile member engaging portion 41 engaged with the tip of the first pile member 21 and the tip portion 42 exposed. (See FIG. 6A). And in the next stage, when the 2nd pile member 22 penetrates the 1st pile member 21, and the front-end | tip of the 2nd pile member 22 protrudes from the front-end | tip of the 1st pile member 21, the 2nd of the pile member engaging part 41 is carried out. The earth retaining cap 4 is transferred to the front end of the second pile member 22 by the portion 41b engaging with the front end of the second pile member 22 (see FIG. 6B). In the same manner as described above, the earth retaining cap 4 moves to the tip of the third pile member 23 (see FIG. 2). That is, the earth retaining cap 4 has a relatively outer diameter from the tip of the pile member 2 having a relatively large outer diameter as each pile member 2 in the combination of the one set of pile members is sequentially inserted into the ground. Of the pile member 2 having a small diameter.

上記のように、杭部材2において最も先端側に配位されるものの先端には常に土止めキャップ4が配位されることから、杭部材2が管状体であっても、内部の空間に土が入り込むことがない。そのため、相対的に外径の大きい杭部材2の先端に至るまでは、相対的に外径の小さい杭部材2に手を添えるだけで差し込むことができる。つまり、ほぼ無抵抗で差し込むことができる。よって、実際に地盤の抵抗を受けつつ杭部材2を差し込むことになるのは、相対的に外径の大きい杭部材2の先端から地中に飛び出た区間のみである。そのため、従来のように長い杭部材の全体を地中に差し込むものに比べ、はるかに容易に作業できる。   As described above, since the earth retaining cap 4 is always arranged at the tip of the pile member 2 that is arranged on the most distal side, even if the pile member 2 is a tubular body, the soil is placed in the internal space. Never get in. Therefore, until it reaches the tip of the pile member 2 having a relatively large outer diameter, the pile member 2 having a relatively small outer diameter can be inserted only by placing a hand. That is, it can be inserted with almost no resistance. Therefore, the pile member 2 is actually inserted while receiving the resistance of the ground only in a section protruding from the tip of the pile member 2 having a relatively large outer diameter into the ground. Therefore, compared with what inserts the whole long pile member in the ground like the past, it can work much more easily.

ここで、図7(A)に示すように、従来の杭部材102を地中に差し込むには、杭部材102を折り曲げないように真っ直ぐ打ち込むため、場合によっては打ち込み作業用の足場をわざわざ組む必要があった。一方、本願発明に係る簡易基礎では、図7(B)に示すように、まず短い第1杭部材21を地中に打ち込み、その後、図7(C)に示すように、長い第2杭部材22を打ち込むことができる。よって、各杭部材2の各々において地盤の抵抗を受けつつ差し込む長さを短くすることができるため、従来のように足場を組むことなく容易に施工できる。   Here, as shown in FIG. 7 (A), in order to insert the conventional pile member 102 into the ground, the pile member 102 is driven straight so as not to be bent. was there. On the other hand, in the simple foundation according to the present invention, as shown in FIG. 7 (B), first, a short first pile member 21 is first driven into the ground, and then, as shown in FIG. 7 (C), a long second pile member. 22 can be driven in. Therefore, since the length inserted while receiving the resistance of the ground in each pile member 2 can be shortened, it can be easily constructed without assembling a scaffold as in the prior art.

なお本例の土止めキャップ4では、図4(A)に示すように、杭部材係合部分41の第1部分41a、第2部分41b、第3部分41cの3つの部分の間に段差を有し、各部分における外径は一定とされているが、土止めキャップ4の形態はこれに限られるものではない。例えば図4(B)に示すように、杭部材係合部分41を基端側から先端側へと順次外径が拡大する円錐台状としても良い。この場合、第1杭部材21との係合位置41d、第2杭部材22との係合位置41e、第3杭部材23との係合位置41fは、図中に二点鎖線で示すように、各杭部材21〜23の内径と杭部材係合部分41の外径とが一致する位置となる。   In addition, in the earth retaining cap 4 of this example, as shown to FIG. 4 (A), a level | step difference is provided between three parts of the 1st part 41a of the pile member engaging part 41, the 2nd part 41b, and the 3rd part 41c. However, the shape of the earth retaining cap 4 is not limited to this. For example, as shown in FIG. 4B, the pile member engaging portion 41 may have a truncated cone shape in which the outer diameter sequentially increases from the proximal end side to the distal end side. In this case, the engagement position 41d with the first pile member 21, the engagement position 41e with the second pile member 22, and the engagement position 41f with the third pile member 23 are indicated by a two-dot chain line in the figure. The inner diameter of each of the pile members 21 to 23 and the outer diameter of the pile member engaging portion 41 coincide with each other.

また、上記の土止めキャップ4はいずれも、杭部材2の内部に杭部材係合部分41の一部を差し込むものであるが、これとは逆に、図4(C)に示すように、杭部材係合部分41に凹部43を形成しておき、杭部材2の先端をこの凹部43に差し込むものとしても良い。なお、図示した凹部43は、各杭部材2の外径に合わせて段状に内径が変化するものとしているが、一定の内径を有するものとしても良い。   Moreover, although all said earth retaining caps 4 insert a part of pile member engaging part 41 in the inside of the pile member 2, on the contrary, as shown in FIG.4 (C), It is good also as what forms the recessed part 43 in the pile member engaging part 41, and inserts the front-end | tip of the pile member 2 in this recessed part 43. FIG. In addition, although the illustrated recessed part 43 shall change an internal diameter in steps according to the outer diameter of each pile member 2, it is good also as what has a fixed internal diameter.

その他、杭部材係合部分41の表面に突起を形成しておき、この突起と杭部材2の内面とが係合するものとしても良く、種々の形態にて実施し得る。また、土止めキャップ4の先端部分42についても、本例のような略円錐状に限られず、多角推状、弾丸状など、種々の形態にて実施し得る。また、材質についても、合成樹脂、木材、金属などの種々の材質が採用できる。   In addition, a protrusion may be formed on the surface of the pile member engaging portion 41, and the protrusion and the inner surface of the pile member 2 may be engaged. Further, the tip end portion 42 of the earth retaining cap 4 is not limited to the substantially conical shape as in the present example, but can be implemented in various forms such as a polygonal shape and a bullet shape. In addition, various materials such as synthetic resin, wood, and metal can be employed.

また、土止め部4の実施形態は、上記の土止めキャップ4に限られたものではなく、杭部材2の先端部が絞られたものとされ、この絞られた先端部が土止め部4とされたものであっても良い。詳しくは、少なくとも杭部材2のうちで、内部に別の杭部材2が貫通するものの先端に土止め部4が設けられ、この土止め部4が、その先端の少なくとも一部を閉ざして、内部に侵入する土を少なくするために機能するものであれば良い。   In addition, the embodiment of the earth retaining portion 4 is not limited to the above earth retaining cap 4, and the tip end portion of the pile member 2 is restricted. It may be what was said. Specifically, at least one of the pile members 2 is provided with an earth retaining portion 4 at the tip of another pile member 2 penetrating inside, and this earth retaining portion 4 closes at least a part of the tip, As long as it functions to reduce the amount of soil that invades.

例えば、図5(A)に示すように、第1杭部材21の先端を、スリットや凹溝などの相対的に強度の小さい部分である弱め部44を設けた上で塑性変形させるなどして絞っておき、この第1杭部材21が単独で地中に差し込まれた状態では、先端が閉鎖されているために内部への土の侵入を防止することができ(図5(B)参照)、第1杭部材21の内部に第2杭部材22が貫通した際には、第1杭部材21の上記弱め部44が破壊されて先端が広がり、これにより、第2杭部材22が突き抜けることのできるものとする(図5(C)参照)。   For example, as shown in FIG. 5A, the tip of the first pile member 21 is plastically deformed after providing a weakened portion 44 that is a relatively low strength portion such as a slit or a groove. In the state where the first pile member 21 is inserted into the ground alone, it is possible to prevent the soil from entering the inside because the tip is closed (see FIG. 5 (B)). When the 2nd pile member 22 penetrates inside the 1st pile member 21, the above-mentioned weakening part 44 of the 1st pile member 21 is destroyed and the tip spreads, and, thereby, the 2nd pile member 22 penetrates. (See FIG. 5C).

つまり、この場合の土止め部4は、管状体が用いられた杭部材2の先端部が、地中への差し込みが行われる際に当該杭部材2の内部に土が侵入することを防止できる程度に閉鎖されたものであって、かつ、この杭部材2の先端から、別の杭部材2が突出することを許容するものとされている。なお、上記の閉鎖は完全閉鎖でなくても良く、上記の別の杭部材2が内部を通過するのに支障のない程度に土が侵入する程度の開口が存在していても良い。   That is, the earth retaining portion 4 in this case can prevent the soil from entering the inside of the pile member 2 when the tip portion of the pile member 2 using the tubular body is inserted into the ground. The pile member 2 is closed to the extent that another pile member 2 is allowed to protrude from the tip of the pile member 2. Note that the above-described closing may not be a complete closing, and there may be an opening that allows the soil to enter to such an extent that the other pile member 2 does not interfere with the passage through the inside.

なお、上記の例では、杭部材2の先端が広がることによって、別の杭部材2が突出できるように開放されるものとしたが、これに限られず、当初一体とされていた杭部材2の先端部分が、他の杭部材2が突き抜けることにより当該杭部材2から分離するものであっても良い。   In the above example, when the tip of the pile member 2 is widened, the pile member 2 is opened so that another pile member 2 can protrude. However, the present invention is not limited to this. The tip portion may be separated from the pile member 2 when the other pile member 2 penetrates.

そして、本例においては、図2に示すように、杭部材2の基端側に耐候キャップ6が被せられている。この耐候キャップ6は本願発明において必須のものではないが、これを用いることにより、基端部が地上に露出した状態にある場合の、杭部材2の腐食を防止することができる。よって、将来に簡易基礎を撤去する場合であっても、耐候キャップ6を取り外した上、杭部材2の引掛部2aに工具や治具を取り付けることにより、杭部材2を容易に引き抜くことができるため、仮設構造物の基礎として最適なものとできる。この耐候キャップ6は、杭部材2の基端部に嵌め込むものであっても良いし、本体部材1の入口穴13aにねじ込むものであっても良く、種々の取り付け方法を採用し得る。   And in this example, as shown in FIG. 2, the weatherproof cap 6 is covered on the base end side of the pile member 2. As shown in FIG. Although this weatherproof cap 6 is not essential in the present invention, the use of this weatherproof cap 6 can prevent the pile member 2 from being corroded when the base end is exposed to the ground. Therefore, even if it is a case where a simple foundation is removed in the future, the pile member 2 can be easily pulled out by removing the weather-resistant cap 6 and attaching a tool or a jig to the hook portion 2a of the pile member 2. Therefore, it can be made optimal as the basis of the temporary structure. The weatherproof cap 6 may be fitted into the base end portion of the pile member 2 or may be screwed into the inlet hole 13a of the main body member 1, and various attachment methods may be employed.

次に、本例の簡易基礎の施工方法について説明する。
まず、本体部材1の埋め込み部11に、下方から固定ボルト3を貫通させた状態とし、この状態の埋め込み部11を地面に配位するか、あるいは本体部材1の入口穴13aが露出した状態で埋め込み部11の一部を地中に埋め込む。そして、先端に土止めキャップ4を嵌め込んだ第1杭部材21を、本体部材1の入口穴13aから出口穴13bへと貫通させ、基端側を打撃することにより、第1杭部材21を先端側から地中へ打ち込み、図6(A)に示した状態とする。上記の打撃はハンマーなどを用いて人力で行っても良いし、エアハンマーなどの打撃機械を用いても良い。
Next, the construction method of the simple foundation of this example is demonstrated.
First, the fixing bolt 3 is passed through the embedded portion 11 of the main body member 1 from below, and the embedded portion 11 in this state is arranged on the ground, or the inlet hole 13a of the main body member 1 is exposed. A part of the embedding unit 11 is embedded in the ground. And the 1st pile member 21 which penetrated the 1st pile member 21 which inserted the earth retaining cap 4 in the front-end | tip from the entrance hole 13a of the main body member 1 to the exit hole 13b, and strikes a base end side is used. Driving from the tip side into the ground, the state shown in FIG. The hitting may be performed manually using a hammer or a hitting machine such as an air hammer.

上記のように第1杭部材21を地中に打ち込んだ後、第2杭部材22を上記第1杭部材21の内部に貫通させ、図6(B)に矢印で示したように、第2杭部材22の基端側を打撃することにより、先端側から地中へと打ち込む。この打ち込みは、第2杭部材22の基端側を第1杭部材21の基端側と略一致させるようにしてなされる。具体的には、図2に示すように、第1杭部材21の基端から第2杭部材22の引掛部2aが露出した程度の状態とされる。   After driving the first pile member 21 into the ground as described above, the second pile member 22 is penetrated into the inside of the first pile member 21, and the second pile member 22 as shown by the arrow in FIG. By striking the proximal end side of the pile member 22, the pile member 22 is driven into the ground from the distal end side. This driving is performed such that the proximal end side of the second pile member 22 is substantially coincident with the proximal end side of the first pile member 21. Specifically, as shown in FIG. 2, the hook 2 a of the second pile member 22 is exposed from the base end of the first pile member 21.

この際、当初第1杭部材21の先端に嵌め込まれていた土止めキャップ4は(図6(A)参照)、第2杭部材22の先端が第1杭部材21の先端よりも突出すると同時に、第2杭部材22の先端に乗り移る(図6(B)参照)。上記にも説明したように、この際においては、途中まで第2杭部材22を無抵抗で差し込むことができる。本例の杭部材2は、第1杭部材21が1m、第2杭部材22が2mとされており、第2杭部材22を実際に打撃する必要があるのは、第1杭部材21の先端側に突出する1m分だけである。加えて、途中までは第1杭部材21が第2杭部材22のガイドとなり得る。よって従来のように、例えば2mの杭を一度に地中に打ち込むことに比べると、はるかに容易に作業でき、地質の関係で長い杭部材2を用いる必要がある場合でも、単独で地中で打ち込む場合に比べてはるかに施工容易である。   At this time, the earth retaining cap 4 that was initially fitted to the tip of the first pile member 21 (see FIG. 6A) simultaneously with the tip of the second pile member 22 protruding beyond the tip of the first pile member 21. Transfer to the tip of the second pile member 22 (see FIG. 6B). As described above, in this case, the second pile member 22 can be inserted without resistance until halfway. In the pile member 2 of this example, the first pile member 21 is 1 m, the second pile member 22 is 2 m, and it is necessary to actually hit the second pile member 22 of the first pile member 21. It is only 1 m protruding to the tip side. In addition, the first pile member 21 can serve as a guide for the second pile member 22 until halfway. Therefore, as compared with the conventional case, for example, compared to driving a 2 m pile into the ground at a time, it is much easier to work, and even when it is necessary to use a long pile member 2 due to geology, It is much easier to construct than driving.

次に、既に地中に打ち込まれた第1杭部材21及び第2杭部材22の内部に第3杭部材23を配位し、上記と同じ要領でこの第3杭部材23を地中へと打ち込む。この際、土止めキャップ4はこの第3杭部材23の先端に乗り移る。   Next, the third pile member 23 is arranged inside the first pile member 21 and the second pile member 22 that have already been driven into the ground, and the third pile member 23 is brought into the ground in the same manner as described above. Type in. At this time, the earth retaining cap 4 is transferred to the tip of the third pile member 23.

上記のようにして本体部材1が地盤に固定される。その後、埋め込み部11の内部に突出した状態にある固定ボルト3に蓋部材12を通す。また、必要に応じて構造物連結金具5やその他の付属部品を取り付ける。本例では構造物連結金具5が、固定ボルト3により蓋部材12と共に取り付けられる。そして、固定ボルト3にナット3aをねじ込むことにより締結がなされ、埋め込み部11、蓋部12、構造物連結金具5、その他付属部品が固定される。なお、埋め込み部11と蓋部12との間には防水パッキンを挟んでも良い。また、この固定ボルト3の締結に先立ち、既に説明したようにして蓋部12を水平方向に移動させることにより構造物連結金具5と構造物Sの位置合わせが行われる。また、図6(A)に示すように、第1杭部材21のみが地中に打ち込まれた後であり、まだ第2杭部材22及び第3杭部材23が打ち込まれていない段階で、蓋部12を埋め込み部11に取り付けてしまっても良い。   The main body member 1 is fixed to the ground as described above. Thereafter, the lid member 12 is passed through the fixing bolt 3 that protrudes into the embedded portion 11. Moreover, the structure connection metal fitting 5 and other accessory parts are attached as needed. In this example, the structure connecting metal fitting 5 is attached together with the lid member 12 by the fixing bolt 3. Then, fastening is performed by screwing the nut 3a into the fixing bolt 3, and the embedded portion 11, the lid portion 12, the structure connecting metal fitting 5, and other accessory parts are fixed. A waterproof packing may be sandwiched between the embedded portion 11 and the lid portion 12. Prior to the fastening of the fixing bolt 3, the structure connecting bracket 5 and the structure S are aligned by moving the lid 12 in the horizontal direction as described above. Moreover, as shown in FIG. 6 (A), after only the first pile member 21 has been driven into the ground and the second pile member 22 and the third pile member 23 have not been driven yet, the lid The part 12 may be attached to the embedded part 11.

上記のようにして地盤に固定された本体部材1の上部は露出したままであっても良いし、土やコンクリートにより被覆されたものであっても良い。そして、上記のように固定された本体部材の蓋部12に対し、構造物Sを固定する。上記のように蓋部材12が埋め込み部材11に対して水平方向に移動可能とされたことにより、本体部材1と構造物Sの位置合わせを容易に行うことができるため、構造物Sにひずみを与えることなく設置可能である。   The upper part of the main body member 1 fixed to the ground as described above may remain exposed, or may be covered with soil or concrete. And the structure S is fixed with respect to the cover part 12 of the main body member fixed as mentioned above. Since the lid member 12 is movable in the horizontal direction with respect to the embedded member 11 as described above, the main body member 1 and the structure S can be easily aligned. Can be installed without giving.

本例の場合、各杭部材2の基端は略一致した状態とされており、本体部材1から近い順に、第1杭部材21〜第3杭部材23が三重に重なり合った部分と、第2杭部材22及び第3杭部材23が二重に重なり合った部分とが存在している。よって、杭部材2の曲げ強度やせん断強度を、本体部材1に近い側の方をより大きくでき、従来のように一定の外径を有する杭を地中に差し込んだ場合に比べると、より効果的に本体部材1を支持することができ、これにより、構造物Sの耐震・耐風強度を向上させることができる。   In the case of this example, the base end of each pile member 2 is made into the state substantially corresponded, the part where the 1st pile member 21-the 3rd pile member 23 overlapped triplely in order from the main body member 1, and 2nd. There is a portion where the pile member 22 and the third pile member 23 overlap each other. Therefore, the bending strength and shear strength of the pile member 2 can be increased on the side closer to the main body member 1, and more effective than a case where a pile having a constant outer diameter is inserted into the ground as in the past. Thus, the main body member 1 can be supported, and thereby the earthquake resistance and wind resistance strength of the structure S can be improved.

なお、上記の説明では、地中への差し込み後の各杭部材2の基端側を略一致させるものとしたが、杭部材2の差し込み方法はこれに限られるものではない。例えば、第2杭部材22あるいは第3杭部材23と外径をほぼ等しくした治具を第1杭部材21の基端側から挿入して打撃することにより、第2杭部材22あるいは第3杭部材の基端側を第1杭部材21の中間部分など、より先端寄りに配位し、その後に上記治具を引き抜くものとしても良い。こうすると、各杭部材2の重なり合う部分は小さくなるが、相対的に短い杭部材2であっても地中の奥深くまでの差し込みが可能となる。   In addition, in said description, although the base end side of each pile member 2 after insertion to underground was made to correspond substantially, the insertion method of the pile member 2 is not restricted to this. For example, the second pile member 22 or the third pile can be obtained by inserting and striking a jig whose outer diameter is substantially equal to that of the second pile member 22 or the third pile member 23 from the proximal end side of the first pile member 21. It is good also as what arrange | positions the base end side of a member near the front ends, such as the intermediate part of the 1st pile member 21, and pulls out the said jig | tool after that. If it carries out like this, although the part which each pile member 2 overlaps will become small, even if it is a relatively short pile member 2, it will be possible to insert deeply into the ground.

上記のように、本願発明に係る簡易基礎は、従来の簡易的な基礎に比べ、簡便でしかも強度の優れたものであるため、公園や緑地などの遊歩道、橋、ベンチ、遊具、東屋、フェンスなどあらゆる構造物の基礎に適用が可能である。また、撤去が容易であるため、仮設住宅などの仮設構造物などの用途にも最適である。   As described above, since the simple foundation according to the present invention is simple and superior in strength compared to the conventional simple foundation, it is a promenade such as a park or a green space, a bridge, a bench, a playground equipment, an arbor, a fence. It can be applied to the foundation of any structure. Moreover, since removal is easy, it is optimal also for uses, such as temporary structures, such as a temporary house.

本願発明の実施例に係る簡易基礎の斜視図であり、本体部材に第1杭部材のみを取り付けた場合を示す。It is a perspective view of the simple foundation which concerns on the Example of this invention, and shows the case where only a 1st pile member is attached to a main body member. 本願発明の実施例に係る簡易基礎を示す一部断面図である。It is a partial cross section figure which shows the simple foundation which concerns on the Example of this invention. 本願発明の実施例に係る簡易基礎を示す平面図である。It is a top view which shows the simple foundation based on the Example of this invention. 本願発明の実施例に係る土止めキャップを示す側面図であり、(A)は実施の一例、(B)及び(C)は他の例を示す。It is a side view which shows the earth retaining cap which concerns on the Example of this invention, (A) shows an example of implementation, (B) and (C) show another example. 本願発明に係る杭部材の他の形状を示すものであり、(A)は側面図、(B)は縦断面図、(C)は他の杭部材が内部を貫通した状態を示す縦断面図である。The other shape of the pile member which concerns on this invention is shown, (A) is a side view, (B) is a longitudinal cross-sectional view, (C) is a longitudinal cross-sectional view which shows the state which the other pile member penetrated the inside. It is. (A)(B)とも、本願発明の実施例に係る簡易基礎の施工要領を示す要部断面図である。(A) (B) is principal part sectional drawing which shows the construction point of the simple foundation based on the Example of this invention. (A)は従来の簡易基礎において杭部材を地中に差し込む様子を示す概略図であり、(B)及び(C)は本願発明の実施例に係る簡易基礎において杭部材を地中に差し込む様子を示す概略図である。(A) is a schematic diagram which shows a mode that a pile member is inserted in the ground in the conventional simple foundation, (B) And (C) is a mode that inserts a pile member in the ground in the simple foundation which concerns on the Example of this invention. FIG. 本願発明の他の実施例に係る簡易基礎の斜視図である。It is a perspective view of the simple foundation which concerns on the other Example of this invention. 本願発明の他の実施例に係る簡易基礎の斜視図である。It is a perspective view of the simple foundation which concerns on the other Example of this invention. 従来の簡易基礎の一例を示す説明図である。It is explanatory drawing which shows an example of the conventional simple foundation.

符号の説明Explanation of symbols

1 本体部材
11 埋め込み部
11a 開口部
11b 埋め込み部側貫通穴
12 蓋部
12a 蓋部側貫通穴
13 杭部材貫通部
13a 入口穴
13b 出口穴
2 杭部材
2a 引掛部
21 第1杭部材
22 第2杭部材
23 第3杭部材
3 固定ボルト
4 土止め部、土止めキャップ
S 構造物
DESCRIPTION OF SYMBOLS 1 Main body member 11 Embedded part 11a Opening part 11b Embedded part side through hole 12 Cover part 12a Cover part side through hole 13 Pile member through part 13a Inlet hole 13b Outlet hole 2 Pile member 2a Hook part 21 1st pile member 22 2nd pile Member 23 3rd pile member 3 Fixing bolt 4 Earth retaining part, Earth retaining cap S Structure

Claims (5)

地中に少なくとも一部が埋め込まれたことにより、地上に構築される構造物(S)を支持することのできる簡易基礎において、
本体部材(1)と杭部材(2)とを備え、
本体部材(1)は、構造物(S)を支持する部分であって、表面に設けられた入口穴(13a)と出口穴(13b)とが組み合わされてなる杭部材貫通部(13)を少なくとも3箇所に備え、
上記の杭部材貫通部(13)における入口穴(13a)と出口穴(13b)との間には、杭部材(2)を配位可能な空間が設けられ、
杭部材(2)は、基端側が打撃されることにより、上記杭部材貫通部(13)の入口穴(13a)と出口穴(13b)との間を通り、先端側が地中へと差し込まれるものであって、
上記杭部材貫通部(13)の1箇所当たりに複数の杭部材(2)が1組として用いられ、
上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通するものとされ、
上記1組の杭部材の組み合わせのうちで最も内側を貫通する杭部材には、管状体あるいは中実の棒状体が用いられており、その他の杭部材には管状体が用いられており、
上記1組の杭部材の組み合わせのうち、相対的に外径の小さい杭部材は、相対的に外径の大きい杭部材の内径よりも外径が小さく、相対的に外径の大きい杭部材よりも長さが長いものとされており、
本体部材(1)の入口穴(13a)の中心と出口穴(13b)の中心とを結ぶ線が、少なくとも、上記1組の杭部材の組み合わせのうちで最も外径の大きい杭部材(21)の外径寸法分の距離を保つようにして、上記杭部材貫通部(13)が設けられたことを特徴とする簡易基礎。
In a simple foundation capable of supporting the structure (S) constructed on the ground by being at least partially embedded in the ground,
A main body member (1) and a pile member (2),
The main body member (1) is a portion that supports the structure (S), and has a pile member penetrating portion (13) formed by combining an inlet hole (13a) and an outlet hole (13b) provided on the surface. In at least three places,
Between the entrance hole (13a) and the exit hole (13b) in the pile member penetration part (13), a space in which the pile member (2) can be coordinated is provided,
The pile member (2) is passed through between the inlet hole (13a) and the outlet hole (13b) of the pile member penetrating part (13) when the proximal end side is hit, and the distal end side is inserted into the ground. And
A plurality of pile members (2) are used as one set per one place of the pile member penetration portion (13),
Among the combination of the above-mentioned one set of pile members, one pile member having a relatively small outer diameter penetrates the inside of one pile member having a relatively large outer diameter,
The pile member penetrating the innermost of the one set of pile members is a tubular body or a solid rod-like body, and the other pile members are tubular bodies.
Of the combinations of the above-mentioned one set of pile members, a pile member having a relatively small outer diameter has a smaller outer diameter than a pile member having a relatively large outer diameter, and a pile member having a relatively large outer diameter. Is considered to be long,
The pile member (21) having the largest outer diameter among the combinations of the one set of pile members is a line connecting the center of the inlet hole (13a) and the center of the outlet hole (13b) of the main body member (1). A simple foundation characterized in that the pile member penetrating portion (13) is provided so as to keep the distance corresponding to the outer diameter dimension of the pile member.
上記本体部材(1)が、上記杭部材(2)を支持するための埋め込み部(11)と、
埋め込み部(11)の上方に設けられた、構造物(S)を支持するための蓋部(12)とを有し、
埋め込み部(11)は、上方に開口部(11a)が設けられており、
蓋部(12)は、少なくとも下面が平面とされ、かつ、この下面が上記開口部(11a)の開口面積よりも大きな面積を有し、
上記の埋め込み部(11)と蓋部(12)とは、固定ボルト(3)の締結によって一体とされるものであり、
この固定ボルト(3)を貫通させるために、埋め込み部(11)の底部には埋め込み部側貫通穴(11b)が、蓋部には蓋部側貫通穴(12a)が、各々設けられており、
上記固定ボルト(3)が上記の各貫通穴(11b,12a)に通された状態であって、かつ、締結が未だされていない状態においては、蓋部(12)が埋め込み部(11)に対して水平方向に移動可能であることを特徴とする、請求項1に記載の簡易基礎。
The main body member (1) has an embedded portion (11) for supporting the pile member (2);
A lid (12) for supporting the structure (S) provided above the embedded portion (11);
The embedded part (11) is provided with an opening (11a) above,
The lid (12) has at least a lower surface as a flat surface, and the lower surface has an area larger than the opening area of the opening (11a).
The embedded portion (11) and the lid portion (12) are integrated by fastening the fixing bolt (3),
In order to allow the fixing bolt (3) to pass through, a buried portion side through hole (11b) is provided in the bottom portion of the buried portion (11), and a lid portion side through hole (12a) is provided in the lid portion. ,
In a state where the fixing bolt (3) is passed through each of the through holes (11b, 12a) and is not yet fastened, the lid (12) is inserted into the embedded portion (11). 2. A simple foundation according to claim 1, characterized in that it can move horizontally.
少なくとも上記杭部材(2)のうちで、内部に別の杭部材(2)が貫通するものの先端に土止め部(4)が設けられたものであり、
この土止め部(4)は、当該杭部材(2)が地中へ差し込まれる際に、その先端の少なくとも一部を閉ざして、内部に侵入する土を少なくするためのものであり、
上記に加えてこの土止め部(4)は、当該杭部材(2)の先端から、上記別の杭部材(2)が突出することを許容するものであることを特徴とする、請求項1または2に記載の簡易基礎。
At least the pile member (2) is provided with the earth retaining portion (4) at the tip of the other pile member (2) penetrating inside,
This earth retaining part (4) is for closing the at least part of the tip when the pile member (2) is inserted into the ground to reduce the soil entering the interior,
In addition to the above, the earth retaining part (4) allows the other pile member (2) to protrude from the tip of the pile member (2). Or the simple foundation of 2.
各杭部材(2)の基端側に、引き抜きのための工具あるいは治具を係合可能な引掛部(2a)が設けられたことを特徴とする、請求項1〜3のいずれかに記載の簡易基礎。   The hook part (2a) which can engage with the tool or jig | tool for extraction at the base end side of each pile member (2) was provided. Simple basis. 地上に構築される構造物(S)を支持するために、本体部材(1)と杭部材(2)とを備えた簡易基礎を地盤に固定する、簡易基礎の施工方法において、
本体部材(1)は、表面に設けられた入口穴(13a)と出口穴(13b)とが組み合わされてなる杭部材貫通部(13)を備え、
外径の異なる複数の杭部材(2)が1組として用いられ、
上記1組の杭部材の組み合わせのうちで、相対的に外径の小さい1本の杭部材が、相対的に外径の大きい1本の杭部材の内部を貫通するものとされ、
本体部材(1)を地面に配位するか、あるいは上記入口穴(13a)が露出した状態で一部を地中に埋め込み、
まず、上記1組の杭部材の組み合わせのうちで最も外径の大きい杭部材(21)を、本体部材内に貫通させ、先端側を地中へと打ち込み、
その後、次いで外径の大きい杭部材(22)を、既に先端側が地中へと差し込まれた杭部材(21)の基端側から内部に貫通させ、先端側を当該杭部材(21)の先端側より突出するように、地中へと打ち込むことを特徴とする、簡易基礎の施工方法。
In order to support the structure (S) constructed on the ground, a simple foundation with a main body member (1) and a pile member (2) is fixed to the ground.
The main body member (1) includes a pile member penetrating portion (13) formed by combining an inlet hole (13a) and an outlet hole (13b) provided on the surface,
A plurality of pile members (2) having different outer diameters are used as one set,
Among the combination of the above-mentioned one set of pile members, one pile member having a relatively small outer diameter penetrates the inside of one pile member having a relatively large outer diameter,
Position the body member (1) on the ground, or embed a part in the ground with the entrance hole (13a) exposed,
First, the pile member (21) having the largest outer diameter among the combinations of the one set of pile members is penetrated into the main body member, and the tip side is driven into the ground.
Then, the pile member (22) with the next larger outer diameter is penetrated from the proximal end side of the pile member (21) whose distal end side is already inserted into the ground, and the distal end side is the distal end of the pile member (21). A simple foundation construction method characterized by driving into the ground so that it protrudes from the side.
JP2006071642A 2006-03-15 2006-03-15 Simple foundation and simple foundation installation method Pending JP2007247249A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103541349A (en) * 2012-07-10 2014-01-29 株式会社乐斯克日本 Foundation element and a complete structure produced therewith
JP2014031700A (en) * 2012-07-10 2014-02-20 Lasco Japan Co Ltd Base structure
JP2014047475A (en) * 2012-08-29 2014-03-17 Lasco Japan Co Ltd Method for constructing finished structure
JP2014125756A (en) * 2012-12-25 2014-07-07 Taisei Corp Foundation structure
JP7094587B1 (en) * 2021-09-24 2022-07-04 鴎 ▲トウ▼ Base member for general-purpose support type multi-pile fixing foundation, general-purpose support type multi-pile fixing foundation, and pedestal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103541349A (en) * 2012-07-10 2014-01-29 株式会社乐斯克日本 Foundation element and a complete structure produced therewith
JP2014031700A (en) * 2012-07-10 2014-02-20 Lasco Japan Co Ltd Base structure
JP2014047475A (en) * 2012-08-29 2014-03-17 Lasco Japan Co Ltd Method for constructing finished structure
JP2014125756A (en) * 2012-12-25 2014-07-07 Taisei Corp Foundation structure
JP7094587B1 (en) * 2021-09-24 2022-07-04 鴎 ▲トウ▼ Base member for general-purpose support type multi-pile fixing foundation, general-purpose support type multi-pile fixing foundation, and pedestal

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