JPH07102579A - Precast-concrete footing structure - Google Patents

Precast-concrete footing structure

Info

Publication number
JPH07102579A
JPH07102579A JP27743093A JP27743093A JPH07102579A JP H07102579 A JPH07102579 A JP H07102579A JP 27743093 A JP27743093 A JP 27743093A JP 27743093 A JP27743093 A JP 27743093A JP H07102579 A JPH07102579 A JP H07102579A
Authority
JP
Japan
Prior art keywords
footings
concrete
reinforcing bar
foundation
precast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP27743093A
Other languages
Japanese (ja)
Other versions
JP2988814B2 (en
Inventor
Akira Kishi
明 岸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Misawa Homes Co Ltd
Original Assignee
Misawa Homes Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Misawa Homes Co Ltd filed Critical Misawa Homes Co Ltd
Priority to JP5277430A priority Critical patent/JP2988814B2/en
Publication of JPH07102579A publication Critical patent/JPH07102579A/en
Application granted granted Critical
Publication of JP2988814B2 publication Critical patent/JP2988814B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To improve workability by building precast-concrete footings among a plurality of precast-concrete base disks installed into a continuous trenching section and hanging reinforcing bars separated from a ground surface at a specified space from the precast-concrete footings. CONSTITUTION:Concrete subslab 22 is placed at the corner sections and specified positions of a trenching section 20 prepared by continuously excavating a ground 100. PC baseplates 30 are put on the concrete subslab 22 while being adjusted so that top faces are levelled in specified height. PC continuous footings 10 are hung up by a crane, etc., and the suspension sections 44 of reinforcing bars 40 are inserted and fixed into the horizontal holes 16 of the footings 10 and hung down. When the footings 10 are constructed among the base disks 30, the footings 10 are separated from a ground surface at specified distances because the length of the suspension sections 44 is set previously, and fixed covering depth is ensured. The adjacent footings 10 are bonded, and concrete is placed to the lower sections of the adjacent footings 10 as footings. Accordingly, the arrangement operation of the reinforcing bars can be simplified, and covering-depth adjustment operation can be omitted.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、建築物の地盤に構築さ
れるプレキャストコンクリート基礎構造に関し、特に建
築現場でのフーティング部における補強鉄筋の配筋作業
を簡略化できるプレキャストコンクリート基礎構造に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete foundation structure constructed on the ground of a building, and more particularly to a precast concrete foundation structure capable of simplifying the reinforcing bar reinforcement work in a footing section at a construction site.

【0002】[0002]

【従来の技術】建築物を安定した状態で構築するために
は、まず地盤に基礎部を安定かつ的確に構築する必要が
ある。従来、住宅用の基礎部は次のようにして構築され
ていた。すなわち、まず建物構築部分に連続して根切り
して根切り部を形成し、この根切り部に玉砂利を敷いて
型枠を組み、支持手段を介してこの型枠を立設支持させ
る。そして、この型枠内にコンクリートを打設し、養生
して固化させた後、型枠を取り外し表面をモルタル処理
する。こうして基礎部が構築されていた。
2. Description of the Related Art In order to construct a building in a stable state, it is first necessary to construct a foundation portion on the ground in a stable and appropriate manner. Conventionally, the foundation part for a house was constructed as follows. That is, first, a root cutting portion is formed by continuously cutting a root in a building construction portion, a gravel is laid on the root cutting portion to form a mold, and the mold is erected and supported by a supporting means. Then, concrete is poured into the mold, cured and solidified, then the mold is removed and the surface is mortared. The foundation was thus constructed.

【0003】しかし、上記従来の基礎構築作業におい
て、型枠を根切り部に沿って連続して立設する作業は、
手間のかかるもので工期の長期化につながり、コストを
上昇させるものであった。また、コンクリートを養生す
る作業も、数日を必要とするもので工期を長引かせる原
因となっており、さらに、型枠の取り外しやモルタル処
理も手間のかかる作業であった。
However, in the above-mentioned conventional foundation construction work, the work of continuously erecting the formwork along the root cutting part is
It was time consuming and led to a longer construction period and increased costs. Also, the work of curing the concrete requires several days, which is a cause of prolonging the construction period, and further, the removal of the formwork and the mortar treatment are labor-intensive works.

【0004】[0004]

【発明が解決しようとする課題】そこで、建築現場にお
ける基礎部構築作業をより簡略化かつ迅速化するため
に、工場段階において予め製造されたプレキャストコン
クリート(以下PCという)基礎を根切り部に設置する
構築形式が考えられた。この構築形式の一例を図3に示
す。
Therefore, in order to further simplify and speed up the work for constructing the foundation at the construction site, a precast concrete (hereinafter referred to as PC) foundation manufactured in advance at the factory stage is installed at the root cutting portion. The construction form to do was considered. An example of this construction format is shown in FIG.

【0005】同図において、根切り部120のコーナー
部および所定位置にPC底盤130が、高さのレベル調
整が行われて捨てコンクリート122にて固定されてい
る。そして、このPC底盤130間にPC基礎110が
掛け渡されている。PC基礎110は、ほぼ直方体形状
をなし、端部には断面コ字状の凹部112または軸と直
角方向に突出する凸部114が形成されて、PC基礎1
10同士を直角に接合するときには、凹部112と凸部
114とを対向させて接合するようになっている。ま
た、PC基礎110の下には、フーティング部の補強鉄
筋124がスペーサ140を介して地面から所定間隔離
され、いわゆるかぶり厚を確保して、所定位置に設置さ
れている。
In the same figure, the PC bottom board 130 is fixed to the corner portion of the root cutting portion 120 and a predetermined position with the waste concrete 122 after the height level is adjusted. The PC foundation 110 is hung between the PC bottom plates 130. The PC foundation 110 has a substantially rectangular parallelepiped shape, and a concave portion 112 having a U-shaped cross section or a convex portion 114 projecting in a direction perpendicular to the axis is formed at an end thereof.
When 10 pieces are joined at a right angle, the concave portion 112 and the convex portion 114 are made to face each other and are joined. Further, under the PC foundation 110, the reinforcing reinforcing bar 124 of the footing portion is separated from the ground for a predetermined period of time through the spacer 140, and a so-called cover thickness is secured, and it is installed at a predetermined position.

【0006】しかし、このようなPC底盤130間にP
C基礎110を掛け渡す形式の基礎構造において、スペ
ーサ140を介して補強鉄筋124を地面から所定間隔
離してかぶり厚を確保し、所定位置に設置するという作
業は、根切り部120内の狭い空間で行うため手間のか
かる作業となっていた。
However, there is a gap between the PC bottom plates 130.
In the basic structure of the type in which the C foundation 110 is bridged, the work of isolating the reinforcing bar 124 from the ground for a predetermined time via the spacer 140 to secure the cover thickness and installing it at a predetermined position is a narrow space in the root cutting part 120. It was a laborious task because it was done in.

【0007】本発明は、前記従来の問題点に鑑みてなさ
れたもので、その目的は、建築現場で、必要なかぶり厚
を確保してフーティング部の補強鉄筋を設置する作業を
簡略化できるプレキャストコンクリート基礎構造を提供
することにある。
The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to simplify the work of installing a reinforcing bar of a footing portion while securing a necessary cover thickness at a construction site. To provide a precast concrete foundation structure.

【0008】[0008]

【課題を解決するための手段】前記目的を達成するため
に、請求項1記載の発明は、建物構築領域で地盤を連続
的に掘削して形成された根切り部内で、所定位置に設置
される複数のプレキャストコンクリート底盤と、このプ
レキャストコンクリート底盤間に架設されるプレキャス
トコンクリート基礎と、このプレキャストコンクリート
基礎の下に地面から所定間隔離して設置され、かつ、フ
ーティング部を補強する補強鉄筋と、を含み、前記補強
鉄筋は、前記プレキャストコンクリート基礎から吊り下
げられて設置されることを特徴とする。
In order to achieve the above object, the invention according to claim 1 is installed at a predetermined position in a root cutting portion formed by continuously excavating the ground in a building construction area. A plurality of precast concrete baseboards, a precast concrete foundation installed between the precast concrete baseboards, and a reinforcing bar that is installed under the precast concrete foundation for a predetermined distance from the ground, and that reinforces the footing part, And the reinforcing bar is installed by being hung from the precast concrete foundation.

【0009】また、請求項2記載の発明は、請求項1に
おいて、前記補強鉄筋は、前記プレキャストコンクリー
ト基礎からの吊り下げ長さを設定することで前記地面か
らの間隔が予め設定されることを特徴とする。
The invention according to claim 2 is that in claim 1, the distance between the reinforcing bar and the ground is preset by setting a suspension length from the precast concrete foundation. Characterize.

【0010】[0010]

【作用】請求項1記載の発明によれば、建物構築領域で
地盤を例えば布掘りして根切り部を形成し、この根切り
部に所定間隔を置いて複数のPC底盤を設置し、このP
C底盤間にPC基礎を架設して、PC基礎からフーティ
ング部補強用の補強鉄筋を吊り下げておく。
According to the first aspect of the present invention, for example, the ground is dug in the building construction area to form a root cutting portion, and a plurality of PC bottom boards are installed at predetermined intervals in the root cutting portion. P
The PC foundation is installed between the C bottom boards, and the reinforcing bar for reinforcing the footing portion is hung from the PC foundation.

【0011】そして、PC基礎の下部にコンクリートを
打設してフーティング部を形成すると、補強鉄筋を内蔵
することとなって強固なフーティング部が形成される。
When concrete is poured into the lower part of the PC foundation to form the footing portion, reinforcing reinforcing bars are built in, and a strong footing portion is formed.

【0012】また、補強鉄筋はPC基礎から吊り下げる
だけなので、スペーサ設置のための作業が不要となり、
補強鉄筋を設置する作業も簡単なものとなって作業者の
負担を減らすことができる。
Further, since the reinforcing rebar is simply hung from the PC foundation, the work for installing the spacer becomes unnecessary,
The work of installing the reinforcing bars can be simplified and the burden on the operator can be reduced.

【0013】これに加えて、請求項2記載の発明によれ
ば、補強鉄筋は地面からの間隔が予め設定できるので、
建築現場で必要なかぶり厚を確保できるよう調整する作
業を省略することができる。
In addition to this, according to the second aspect of the invention, since the distance between the reinforcing bar and the ground can be set in advance,
It is possible to omit the work of adjusting so that the required cover thickness can be secured at the construction site.

【0014】[0014]

【実施例】以下、本発明の実施例について、図面を参照
して説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0015】図1は、本実施例に係る基礎構造の全体斜
視図である。図1において、PC布基礎10が、根切り
部20に設置されたPC底盤30間に架設されている。
FIG. 1 is an overall perspective view of the basic structure according to this embodiment. In FIG. 1, the PC cloth foundation 10 is installed between the PC bottom boards 30 installed in the root cutting part 20.

【0016】根切り部20は、地盤100を布掘りして
形成されており、この根切り部20のコーナー部および
所定位置にPC底盤30が設置されている。
The root cutting portion 20 is formed by digging the ground 100, and the PC bottom board 30 is installed at a corner portion and a predetermined position of the root cutting portion 20.

【0017】このPC底盤30は、補強鉄筋(図示せ
ず)を内部に有して強化されたコンクリート板であるた
め、建築現場で補強鉄筋をこのPC底盤30上に配設す
る作業を省略できる。また、このPC底盤30は、上面
が滑らかな平面となっており、PC布基礎10を架設す
るときにこの上面に位置合わせのための墨出しを行える
ようになっている。
Since this PC bottom plate 30 is a reinforced concrete plate having reinforcing reinforcing bars (not shown) inside, the work of disposing the reinforcing reinforcing bars on this PC bottom plate 30 can be omitted at the construction site. . Further, the PC bottom board 30 has a smooth upper surface, and when the PC cloth foundation 10 is erected, marking can be performed on the upper surface for alignment.

【0018】次に、PC底盤30間に架設されるPC布
基礎10について説明する。このPC布基礎10は、上
端面に建物を載置して支持するもので、所定の厚さで直
方体形状に形成され、内部に図示しない補強用の鉄筋が
埋設されてコンクリートにて構成され、予め工場で表面
処理がなされた状態となっている。
Next, the PC cloth foundation 10 installed between the PC bottom boards 30 will be described. This PC cloth foundation 10 is for supporting a building by mounting it on the upper end surface, is formed in a rectangular parallelepiped shape with a predetermined thickness, and is constructed of concrete with reinforcing reinforcing bars (not shown) embedded therein. It is in a state of being surface-treated in advance at the factory.

【0019】また、このPC布基礎10には二種類があ
り、両端部に他のPC布基礎10との結合を行うために
肉厚を厚くし横断面コ字状の凹部12が形成されたもの
と、一方の端部に該凹部12が形成され、他方の端部に
は他のPC布基礎10と直角に接合するため、軸に直角
に突出する凸部14が形成されたものとがある。
There are two types of the PC cloth base 10, and the recesses 12 having a U-shaped cross section are formed at both ends so as to be joined with other PC cloth bases 10. The one having the concave portion 12 formed at one end and the one having the convex portion 14 projecting at a right angle to the shaft for joining at a right angle to the other PC cloth foundation 10 at the other end. is there.

【0020】そして、PC布基礎10同士を直線状に接
合するときには、それぞれの凹部12を対向させて設置
し、この凹部12の内部に鉄筋を配設してコンクリート
を打設し、連結部の強化を図るようになっている。
When the PC cloth foundations 10 are to be joined in a straight line, the recesses 12 are installed so as to face each other, and the reinforcing bars are placed inside the recesses 12 to pour concrete and connect the connecting parts. It is designed to be strengthened.

【0021】または、PC布基礎10同士を直角に接合
するときには、一方のPC布基礎10の凹部12と他方
のPC布基礎10の凸部14とを対向させて設置して、
凹部12の内部に鉄筋を配設してコンクリートを打設し
て連結するようになっている。
Alternatively, when the PC cloth foundations 10 are joined at a right angle, the concave portion 12 of one PC cloth foundation 10 and the convex portion 14 of the other PC cloth foundation 10 are placed so as to face each other.
Reinforcing bars are arranged inside the recess 12 and concrete is poured and connected.

【0022】また、このPC布基礎10の下端部には、
補強鉄筋40を吊り下げるための横穴16が形成されて
いる。この横穴16は、PC布基礎10の一方の側面か
ら他方の側面に貫通する穴で、補強鉄筋40に設けられ
た吊下部44を挿入できるようになっている。また、図
1において、この横穴16は吊下部44に対応する位置
に設けられているが、吊下部44より多い個数の横穴1
6を設けておき、補強鉄筋40を吊り下げるときに最も
適当な位置の横穴16を選択して使用しても良い。
At the lower end of the PC cloth foundation 10,
A lateral hole 16 for suspending the reinforcing bar 40 is formed. The lateral hole 16 is a hole penetrating from one side surface of the PC cloth foundation 10 to the other side surface thereof, and the hanging portion 44 provided in the reinforcing bar 40 can be inserted therein. Further, in FIG. 1, the horizontal hole 16 is provided at a position corresponding to the hanging portion 44, but a larger number of horizontal holes 1 than the hanging portion 44 is provided.
6 may be provided and the lateral hole 16 at the most suitable position may be selected and used when suspending the reinforcing bar 40.

【0023】次に、補強鉄筋40について図2に基づい
て説明する。
Next, the reinforcing bar 40 will be described with reference to FIG.

【0024】補強鉄筋40は、PC布基礎10の下部に
コンクリートを打設して構築されるフーティングに内蔵
されて、このフーティングを強化するもので、PC布基
礎10の長手方向に平行に延びる一対の用心筋40a
と、この用心筋40aと直角に設けられる複数のベース
40bとを有してなる。また、用心筋40aは、図1に
示すようにPC底盤30、30間に配置される長さとな
っている。
The reinforcing reinforcing bar 40 is built in a footing constructed by placing concrete on the lower portion of the PC cloth foundation 10 to reinforce the footing, and is parallel to the longitudinal direction of the PC cloth foundation 10. A pair of extended myocardium 40a
And a plurality of bases 40b provided at right angles to the myocardium 40a. Further, the myocardium 40a has a length arranged between the PC bottom plates 30 as shown in FIG.

【0025】そして、この補強鉄筋40は、PC布基礎
10の横穴16から吊下部44によって吊り下げられて
いる。
The reinforcing reinforcing bar 40 is suspended from the lateral hole 16 of the PC cloth foundation 10 by a suspending portion 44.

【0026】吊下部44は、一方の用心筋40aに設け
られた挿通部44aと、他方の用心筋40aに設けられ
た結合部44bとを有する。
The suspension part 44 has an insertion portion 44a provided on one of the myocardial muscles 40a and a connecting portion 44b provided on the other myocardial muscle 40a.

【0027】挿通部44aは、用心筋40aから直立し
所定長さで用心筋40aと直角方向に屈曲してなる棒状
部材であり、PC布基礎10の横穴16に挿入し、先端
部をPC布基礎10の側面から突出させられるようにな
っている(図1参照)。そして、この挿通部44aは、
補強鉄筋40を吊り下げても屈曲した角度がほぼ直角の
まま保たれる程度の強度を有する鉄筋や針金等で構成さ
れている。
The insertion portion 44a is a rod-shaped member which stands upright from the myocardium 40a and is bent at a predetermined length in a direction perpendicular to the myocardium 40a. The insertion portion 44a is inserted into the lateral hole 16 of the PC cloth foundation 10 and the tip thereof is PC cloth. The base 10 can be projected from the side surface (see FIG. 1). And this insertion part 44a is
The reinforcing bar 40 is composed of a reinforcing bar, wire, or the like having a strength such that the bent angle is maintained at a substantially right angle even when the reinforcing bar 40 is suspended.

【0028】ここで、挿通部44aの直立した部分の長
さを予め設定しておくことで、補強鉄筋40がPC布基
礎10の横穴16から吊り下げられる距離が決定され、
補強鉄筋40と地面との間隔が決まり、所定のかぶり厚
を確保できる。
By previously setting the length of the upright portion of the insertion portion 44a, the distance at which the reinforcing bar 40 is suspended from the lateral hole 16 of the PC cloth foundation 10 is determined,
The distance between the reinforcing bar 40 and the ground is determined, and a predetermined cover thickness can be secured.

【0029】また、結合部44bは、PC布基礎10か
ら突出した挿通部44aの先端部に巻き付けて、挿通部
44aが横穴16から抜け難くするとともに、補強鉄筋
40を吊り下げて、この補強鉄筋40をしっかりと吊り
下げられるようになっている。そして、この結合部44
bは、挿通部44aに巻き付けるためには、手で曲げら
れる程度の針金等からなることが好ましい。
The connecting portion 44b is wound around the tip of the insertion portion 44a protruding from the PC cloth foundation 10 to prevent the insertion portion 44a from coming off the lateral hole 16, and the reinforcing reinforcing bar 40 is hung so that the reinforcing reinforcing bar 40 is suspended. 40 can be firmly hung. Then, this connecting portion 44
It is preferable that b is made of wire or the like that can be bent by hand to be wound around the insertion portion 44a.

【0030】本実施例は、上記のように構成されてお
り、以下この基礎の施工方法について説明する。
The present embodiment is constructed as described above, and the construction method of this foundation will be described below.

【0031】まず、図1に示すように、地盤100を布
掘りして根切り部20を形成し、この根切り部20のコ
ーナー部および所定位置にPC底盤30を設置する。
First, as shown in FIG. 1, the ground 100 is dug to form a root cutting portion 20, and a PC bottom board 30 is installed at a corner portion of the root cutting portion 20 and a predetermined position.

【0032】ここで、このPC底盤30を根切り部20
に設置するときには、このPC底盤30の設置位置に捨
てコンクリート22の山を載置し、この捨てコンクリー
ト22の山を潰すようにしてPC底盤30を載置する。
そして、このPC底盤30を掛矢等で叩いて所定の高さ
で上面が水平になるよう調整作業を行う。なお、この作
業は、水糸や水準器やレーザー光線による水準装置等を
用いて水平レベルおよび高さを確認しながら行う。こう
して全てのPC底盤30を所定の同じ高さで水平に設置
する。
Here, the PC bottom plate 30 is attached to the root cutting portion 20.
At the time of installation, the pile of waste concrete 22 is placed at the installation position of the PC bottom board 30, and the PC bottom board 30 is placed so as to crush the pile of the waste concrete 22.
Then, the PC bottom board 30 is hit with a hanging arrow or the like to perform an adjusting operation so that the upper surface becomes horizontal at a predetermined height. This work is performed while checking the horizontal level and height using a water thread, a level, or a leveling device using a laser beam. In this way, all the PC bottom boards 30 are horizontally installed at the same predetermined height.

【0033】次に、クレーン等でPC布基礎10を吊り
上げて、このPC布基礎10の横穴16に補強鉄筋40
の挿通部44aを挿通してその先端部を突出させ、結合
部44bを該先端部に巻き付けて、挿通部44aが横穴
16から抜けないようにするとともに、補強鉄筋40を
しっかりと吊り下げる。これだけの簡単な作業で補強鉄
筋40の取り付けが完了する。
Next, the PC cloth foundation 10 is lifted by a crane or the like, and the reinforcing bar 40 is reinforced in the lateral hole 16 of the PC cloth foundation 10.
The insertion portion 44a is inserted and the tip portion thereof is projected, and the coupling portion 44b is wound around the tip portion to prevent the insertion portion 44a from coming off the lateral hole 16, and the reinforcing bar 40 is firmly suspended. The attachment of the reinforcing bar 40 is completed by such a simple operation.

【0034】そして、クレーンで吊り下げられたPC布
基礎10をPC底盤30間に架設する。このとき、前述
したように、既にPC底盤30は所定の高さで水平に設
置されているので、PC布基礎10は、ただPC底盤3
0間に掛け渡して設置するだけで所定の高さで水平にな
る。したがって、PC底盤30の上面にPC布基礎10
の設置位置の墨出しを行い、設置位置だけを確認しなが
ら載置するだけでこのPC布基礎10の設置作業は完了
する。
Then, the PC cloth foundation 10 suspended by the crane is installed between the PC bottom boards 30. At this time, as described above, since the PC bottom plate 30 is already installed horizontally at a predetermined height, the PC cloth foundation 10 is simply the PC bottom plate 3.
It will be horizontal at a predetermined height simply by setting it over 0. Therefore, the PC cloth foundation 10 is placed on the upper surface of the PC bottom board 30.
The installation work of the PC cloth foundation 10 is completed only by marking out the installation position of the PC cloth and placing it while checking only the installation position.

【0035】また、PC布基礎10に下に吊り下げられ
た補強鉄筋40は、挿通部44aの直立長さが予め設定
されることで、地面から所定の距離を離して吊り下がる
ようになって所定のかぶり厚が確保される。したがっ
て、補強鉄筋40の設置作業が簡略化されるとともに、
かぶり厚の調整作業が省略される。
Further, the reinforcing bar 40 hung below the PC cloth foundation 10 can be hung at a predetermined distance from the ground by setting the upright length of the insertion portion 44a in advance. A predetermined cover thickness is secured. Therefore, the installation work of the reinforcing bar 40 is simplified, and
The work of adjusting the cover thickness is omitted.

【0036】そして、隣接するPC布基礎10同士を図
示しない治具にて結合し、このPC布基礎10の下部に
コンクリートを打設してフーティングを形成して建物の
基礎が構築される。このように、本実施例によれば、補
強鉄筋40の取り付け作業が簡単に行えるので作業者の
負担が軽減される。
Then, the adjacent PC cloth foundations 10 are joined together by a jig (not shown), concrete is placed under the PC cloth foundations 10 to form footings, and a building foundation is constructed. As described above, according to the present embodiment, since the work of attaching the reinforcing bar 40 can be easily performed, the burden on the worker is reduced.

【0037】なお、本発明は、上記実施例に限定される
ものではなく、発明の要旨の範囲内で種々の変形が可能
である。例えば、挿通部44aが補強鉄筋40を吊り下
げるのに十分な強度を有していれば、結合部44bは必
ずしも必要ではなく、挿通部44aの抜け止めとしてこ
の挿通部44aの先端部に軸と直交方向に穴を形成し
て、この穴にピンを挿通する構成であっても良い。
The present invention is not limited to the above embodiment, but various modifications can be made within the scope of the invention. For example, if the insertion portion 44a has sufficient strength to suspend the reinforcing bar 40, the coupling portion 44b is not always necessary, and a shaft is attached to the tip of the insertion portion 44a to prevent the insertion portion 44a from coming off. A configuration may be adopted in which a hole is formed in the orthogonal direction and the pin is inserted into this hole.

【0038】また、補強鉄筋40は上記実施例に示すよ
うな挿通部44a結合部44bを有する構成に限定され
ず、単に、補強鉄筋40を鉄線等で吊り下げる構成であ
っても良い。
Further, the reinforcing bar 40 is not limited to the structure having the insertion part 44a and the connecting part 44b as shown in the above-mentioned embodiment, but the reinforcing bar 40 may be simply suspended by a wire or the like.

【0039】[0039]

【発明の効果】以上説明したように、請求項1記載の発
明によれば、フーティング部に内蔵する補強鉄筋はPC
基礎から吊り下げられるだけなので、この補強鉄筋を設
置する作業を簡略化できるという効果がある。
As described above, according to the first aspect of the present invention, the reinforcing bar built in the footing portion is made of PC.
Since it is only suspended from the foundation, there is an effect that the work of installing this reinforcing bar can be simplified.

【0040】これに加えて、請求項2記載の発明によれ
ば、補強鉄筋は地面からの間隔が予め設定できるので、
建築現場で必要なかぶり厚を確保できるよう調整する作
業を省略できるという効果がある。
In addition to this, according to the second aspect of the invention, since the distance between the reinforcing bar and the ground can be set in advance,
This has the effect of omitting the work of adjusting to ensure the required cover thickness at the construction site.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例に係る基礎構造の全体斜視図で
ある。
FIG. 1 is an overall perspective view of a basic structure according to an embodiment of the present invention.

【図2】フーティングに内蔵される補強鉄筋を示す斜視
図である。
FIG. 2 is a perspective view showing a reinforcing bar included in a footing.

【図3】従来の基礎構築形式を示す斜視図である。FIG. 3 is a perspective view showing a conventional foundation construction form.

【符号の説明】[Explanation of symbols]

10 PC布基礎 20 根切り部 22 捨てコンクリート 30 PC底盤 40 補強鉄筋 10 PC cloth foundation 20 Root cutting part 22 Discarded concrete 30 PC bottom plate 40 Reinforcing bar

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 建物構築領域で地盤を連続的に掘削して
形成された根切り部内で、所定位置に設置される複数の
プレキャストコンクリート底盤と、 このプレキャストコンクリート底盤間に架設されるプレ
キャストコンクリート基礎と、 このプレキャストコンクリート基礎の下に地面から所定
間隔離して設置され、かつ、フーティング部を補強する
補強鉄筋と、を含み、 前記補強鉄筋は、前記プレキャストコンクリート基礎か
ら吊り下げられて設置されることを特徴とするプレキャ
ストコンクリート基礎構造。
1. A plurality of precast concrete bottom plates installed at predetermined positions in a root cutting part formed by continuously excavating the ground in a building construction area, and a precast concrete foundation installed between the precast concrete bottom plates. And a reinforcing bar that is installed below the precast concrete foundation for a predetermined distance from the ground and that reinforces the footing portion, and the reinforcing bar is installed by being suspended from the precast concrete foundation. A precast concrete foundation structure characterized by this.
【請求項2】 請求項1において、 前記補強鉄筋は、前記プレキャストコンクリート基礎か
らの吊り下げ長さを設定することで前記地面からの間隔
が予め設定されることを特徴とするプレキャストコンク
リート基礎構造。
2. The precast concrete foundation structure according to claim 1, wherein a distance from the ground is set in advance by setting a suspension length of the reinforcing bar from the precast concrete foundation.
JP5277430A 1993-10-07 1993-10-07 Precast concrete foundation structure Expired - Fee Related JP2988814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5277430A JP2988814B2 (en) 1993-10-07 1993-10-07 Precast concrete foundation structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5277430A JP2988814B2 (en) 1993-10-07 1993-10-07 Precast concrete foundation structure

Publications (2)

Publication Number Publication Date
JPH07102579A true JPH07102579A (en) 1995-04-18
JP2988814B2 JP2988814B2 (en) 1999-12-13

Family

ID=17583457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5277430A Expired - Fee Related JP2988814B2 (en) 1993-10-07 1993-10-07 Precast concrete foundation structure

Country Status (1)

Country Link
JP (1) JP2988814B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015063791A (en) * 2013-09-24 2015-04-09 ミサワホーム株式会社 Construction method of foundation for building
CN104631484A (en) * 2013-11-14 2015-05-20 中国人民解放军军械工程学院 Quick self-adaptive road pile foundation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015063791A (en) * 2013-09-24 2015-04-09 ミサワホーム株式会社 Construction method of foundation for building
CN104631484A (en) * 2013-11-14 2015-05-20 中国人民解放军军械工程学院 Quick self-adaptive road pile foundation
CN104631484B (en) * 2013-11-14 2016-08-17 中国人民解放军军械工程学院 Quick self-adapted road pile foundation

Also Published As

Publication number Publication date
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