JPH0527726B2 - - Google Patents
Info
- Publication number
- JPH0527726B2 JPH0527726B2 JP16538786A JP16538786A JPH0527726B2 JP H0527726 B2 JPH0527726 B2 JP H0527726B2 JP 16538786 A JP16538786 A JP 16538786A JP 16538786 A JP16538786 A JP 16538786A JP H0527726 B2 JPH0527726 B2 JP H0527726B2
- Authority
- JP
- Japan
- Prior art keywords
- pile
- piles
- ready
- figures
- diameter
- 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.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 claims description 14
- 239000004568 cement Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000008267 milk Substances 0.000 description 4
- 210000004080 milk Anatomy 0.000 description 4
- 235000013336 milk Nutrition 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Foundations (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は複数本の既製杭を集合させて、一体
として機能するようにした構造物基礎となる集合
杭の造成工法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for constructing a pile pile, which serves as the foundation of a structure, in which a plurality of ready-made piles are assembled to function as one.
最近、大型の構造物の建設においては大径の杭
が用いられることが多くなり、現場打ち杭に限ら
ず、大径の既製コンクリート杭や複合パイル等が
使用されている。
Recently, large diameter piles have been increasingly used in the construction of large structures, and not only cast-in-place piles but also large diameter ready-made concrete piles, composite piles, and the like are being used.
また、通常の杭の施行においては杭頭部の径の
2.0〜2.5倍の中心間隔をとることが要求されてお
り、従来、地中連続壁の一種として、場所打ちコ
ンクリートにより柱列杭工法が知られているが、
既製杭について、間隔をあけずに施工することは
行なわれていない。 In addition, in ordinary pile construction, the diameter of the pile head is
It is required to have a center spacing of 2.0 to 2.5 times, and conventionally, the column pile method using cast-in-place concrete has been known as a type of underground continuous wall.
Prefabricated piles are not constructed without spacing.
〔発明が解決しようとする問題点〕
しかし、大径の既製杭の施工では穿孔のための
掘削機、クレーンその他の設備が非常に大型のも
のとなり、杭の製造、運搬も困難になつてくる。
また、杭頭部にフーチングを設ける場合、フーチ
ングも非常に広い面積のものとなる。さらに杭断
面は製造上、施工上の制約等から、通常円形断面
となるが、敷地条件等の制約がある場合、あるい
は杭の方向性をもたせたい場合等、円形断面では
かえつて不経済となる場合がある。[Problems to be solved by the invention] However, when constructing large-diameter ready-made piles, the excavator, crane, and other equipment for drilling become extremely large, making it difficult to manufacture and transport the piles. .
Furthermore, when a footing is provided at the pile head, the footing also has a very large area. Furthermore, the cross section of the pile is usually circular due to manufacturing and construction constraints, but if there are restrictions such as site conditions or if you want the pile to have directionality, a circular cross section becomes uneconomical. There are cases.
この発明の集合杭の造成工法は複数本の既製杭
を集合させて施工することにより、大径杭の代わ
りに用いたり、並列させて方向性をもたせるなど
して、上述のような問題点の解決を図つたもので
ある。 The pile pile construction method of the present invention solves the above-mentioned problems by constructing a plurality of pre-fabricated piles in place of large-diameter piles or placing them in parallel to provide directionality. This is an attempt to solve the problem.
この発明によつて造成される集合杭１は複数本
の既製杭２に密に配し、単一の杭のように機能さ
せるものであり、地盤にオーバーラツプさせた複
数の掘削孔３を穿孔し、各掘削孔内にそれぞれ既
製杭２を杭頭を揃えた状態に建込み、各既製杭２
間の間〓にセメントミルク等の充填材４を充填硬
化させることにより、複数本の既製杭２を一体化
する。なお、既製杭２の材質は問わない。
The pile pile 1 constructed according to the present invention is arranged closely on a plurality of ready-made piles 2 to function like a single pile, and is made by drilling a plurality of overlapping excavated holes 3 in the ground. , erect the ready-made piles 2 in each excavated hole with their pile heads aligned, and
A plurality of ready-made piles 2 are integrated by filling and hardening a filler material 4 such as cement milk between the gaps. Note that the material of the ready-made pile 2 does not matter.
次に、図示した実施例について説明する。第１
図ａ，ｂは集合杭１の一例を示したもので、５本
の掘削孔３を地盤に十字状にオーバーラツプさせ
て穿孔し、それぞれに中空の鉄筋コンクリート製
の既製杭２を建込んで、先端および周辺を充填材
４としての硬化性の根固め液４ａおよび周辺固定
液４ｂで固めて一体化するものである。充填材４
としては通常セメントミルク等が使用される。根
固め液４についてはセメント量を多くしたり、あ
るいはモルタル等を使用する。なお、図中５は支
持層を示す。
Next, the illustrated embodiment will be described. 1st
Figures a and b show an example of a pile pile 1, in which five excavated holes 3 are bored in the ground in a criss-cross pattern, overlapping each other, and a hollow ready-made pile 2 made of reinforced concrete is erected in each hole. The surrounding area is solidified and integrated with a curable root hardening liquid 4a and a surrounding fixing liquid 4b as a filler 4. Filler 4
Usually, cement milk or the like is used. For the root hardening solution 4, increase the amount of cement or use mortar. Note that 5 in the figure indicates a support layer.
第２図ａ〜ｄは既製杭２の種々の配置例を示し
たものである。 FIGS. 2a to 2d show various examples of arrangement of ready-made piles 2. FIG.
第２図ａの例は４本の既製杭２を組み合わせた
集合杭１の例で、第１図ａ，ｂの実旋例のように
３連式（３軸）の穿孔機により十字状に５本の掘
削孔３を掘削し、中央を除く、周囲４本の掘削孔
３に既製杭２を建込んで一体化する場合である。
大径の既製杭に代わるものとして考えた場合、鉛
直方向の支持力は４本の既製杭２の合計で考える
こができ、また曲げモーメントに対しては断面剛
性が大きくなるため比較的有利な構造となる。 The example in Figure 2a is an example of a pile pile 1 that is a combination of four ready-made piles 2.As in the actual turning examples in Figures 1a and b, the example shown in Figure 2a is a pile pile 1 that is made by combining four ready-made piles 2. This is a case where five excavated holes 3 are excavated and ready-made piles 2 are erected and integrated into four surrounding excavated holes 3 excluding the center.
When considered as an alternative to large-diameter prefabricated piles, the vertical bearing capacity can be considered as the sum of the four prefabricated piles 2, and the cross-sectional rigidity against bending moments is large, making it relatively advantageous. It becomes a structure.
第２図ｂの例は７本の掘削孔３に７本の既製杭
２を建込み集合杭１とする場合である。 The example shown in FIG. 2b is a case where seven ready-made piles 2 are installed in seven excavated holes 3 to form a pile pile 1.
第２図ｃ，ｄはそれぞれ３本、５本の既製杭２
を並列させて建込み、一方向の断面性能を向上さ
せた集合杭１の例である。 Figure 2 c and d show three and five ready-made piles 2, respectively.
This is an example of a pile pile 1 that is built in parallel to improve cross-sectional performance in one direction.
第３図〜第５図はこの発明の集合杭１の施工手
順の一例を十字状の集合杭１について示したもの
で、次のようになる。 3 to 5 show an example of the construction procedure for the cross-shaped pile pile 1 of the present invention, and are as follows.
３連式の掘削機あるいは一軸のアースオーガ
ー等により、オーバーラツプさせた掘削孔３を
地盤に掘削する。なお、孔壁安定のため必要に
応じベントナイト泥水等を用いる。 Overlapping excavation holes 3 are excavated in the ground using a triple excavator or a single-shaft earth auger. Note that bentonite slurry or the like is used as necessary to stabilize the hole wall.
直角方向にも同様に掘削を行ない、支持層５
に達する先端部にはモルタルあるいはセメント
層を多くしたセメントミルク等の根固め液４ａ
を注入し、その上にセメントミルク等の周辺固
定液４ｂを充填する。 Excavation is performed in the same manner in the perpendicular direction, and the support layer 5 is
At the tip that reaches the top, apply mortar or a root hardening solution 4a such as cement milk with a large cement layer.
is injected, and a peripheral fixative 4b such as cement milk is filled thereon.
各掘削孔３にそれぞれ既製杭２を杭頭に高さ
が同一になるように揃えて建込み、先端および
周辺部を根固め液４ａおよび周辺固定液４ｂの
硬化にり固定し、集合杭１として一体化させ
る。なお、既製杭２の建込みを容易にするた
め、埋め込み杭工法等で行なわれるよう先端に
翼状の鉄板ピースを取り付け回転させながら建
込むこともできる。 Ready-made piles 2 are erected in each excavated hole 3 so that the pile caps and heights are the same, and the tips and surrounding areas are fixed with hardening of the root hardening liquid 4a and the surrounding fixing liquid 4b, and the set piles 1 to be integrated as one. In order to facilitate the erection of the ready-made piles 2, a wing-shaped iron plate piece may be attached to the tip and the piles may be rotated while being erected, as is done in the embedded pile method or the like.
第６図ａ，ｂは応用例を示したもので、例えば
第６図ａのような配置に対し、第６図ｂのように
５本の既製杭２を並列させて施工することによ
り、面内剛性の向上、地震時等の振動量の減少を
図り、もつて居住性の向上を図ることができる。 Figures 6a and 6b show application examples. For example, for the arrangement shown in Figure 6a, by constructing five ready-made piles 2 in parallel as shown in Figure 6b, the surface By improving internal rigidity and reducing the amount of vibration during earthquakes, etc., it is possible to improve livability.
第７図ｂは第７図ａの配置に対し、既製杭２を
箱状に連続させ、砂層における流動化に対する抵
抗力を上げ、もつて耐震性の向上を図つたもので
ある。 In contrast to the arrangement shown in FIG. 7a, FIG. 7b shows a structure in which ready-made piles 2 are arranged in a box-like manner to increase resistance to fluidization in the sand layer, thereby improving seismic resistance.
第８図ａ，ｂは狭い敷地の高度利用のための適
用例を示したもので、敷地いつぱいに地下室を有
する建物を建造する場合、大径の既製杭２′では
第８図ａに示すように既製杭２′の杭軸が内側に
寄らざるを得ず、杭スパンL0が小さくなり、上
部の柱軸との偏心量が大きくなるのに対し、第２
図ｃ，ｄのように既製杭２を並列させた集合杭１
を用いれば、第８図ｂに示すように、柱軸との偏
心量が小さくなり、杭スパンL1も大きくとるこ
とができ、力学的に有利となり、耐震性が向上す
る。 Figures 8a and 8b show an example of application for advanced utilization of a narrow site.When constructing a building with a basement that fills the site, large-diameter prefabricated piles 2' are used as shown in Figure 8a. In contrast, the pile axis of the ready-made pile 2' is forced to move inward, the pile span L 0 becomes small, and the eccentricity with respect to the upper column axis becomes large.
Collected piles 1 with ready-made piles 2 arranged in parallel as shown in Figures c and d
If this is used, as shown in Figure 8b, the amount of eccentricity with respect to the column axis will be reduced, and the pile span L1 can be increased, which will be mechanically advantageous and improve seismic resistance.
第９図ａ，ｂおよび第１０図ａ，ｂはフーチン
グ６との関係を示したもので、第９図ａに対し、
集合杭１を用いることにより、第９図ｂのように
フーチング６の幅Ｂを小さくすることができる。
同様に第１０図ａに対し、第１０図ｂに示すよに
フーチング６の横方向の長さＬを小さくすること
ができる。 Figures 9a, b and 10a, b show the relationship with the footing 6, and in contrast to Figure 9a,
By using the pile piles 1, the width B of the footing 6 can be reduced as shown in FIG. 9b.
Similarly, compared to FIG. 10a, the lateral length L of the footing 6 can be made smaller as shown in FIG. 10b.
また、第１１図ａのような杭配置について、施
工上のトラブルがあつた場合などにおいても、第
１１図ｂに示すように同じ径の既製杭２を組み合
わせた集合杭１を用いることにより、容易に対処
させることができる。 In addition, even if there is a problem during construction regarding the pile arrangement as shown in Figure 11a, by using a set of piles 1 that is a combination of ready-made piles 2 of the same diameter as shown in Figure 11b, It can be easily dealt with.
さらに、支持層５に傾斜がある場合、第１２図
ａのように大径の既製杭２′では支持層５への貫
入量ｌを大きくしなければならず、施工が困難と
なるのに対し、集合杭１では第１２図ｂのように
各既製杭２の先端をずらし、少ない貫入量l1、l2
で信頼性の高い施工が可能となる。 Furthermore, if the support layer 5 has an inclination, as shown in Figure 12a, with a ready-made pile 2' having a large diameter, the amount of penetration l into the support layer 5 must be increased, making construction difficult. , in the pile pile 1, the tip of each ready-made pile 2 is shifted as shown in Fig. 12b, and the penetration amount l 1 , l 2 is small.
This enables highly reliable construction.
〔発明の効果〕
大径の既製杭を使用する代わりに、例えば杭
頭を揃えてφ300mmの既製杭を組み合わせて所
要の支持力あるいは曲げ耐力を得る杭を造成す
ることができ、大量使用によるコストダウンを
図れるほか、掘削機、クレーン等もそれに応じ
た大きさのものを一種類用意すれば良く、施工
設備の簡素化、小型化が図れる。[Effect of the invention] Instead of using large-diameter ready-made piles, for example, by aligning the pile heads and combining ready-made piles with a diameter of 300 mm, it is possible to create a pile that has the required bearing capacity or bending capacity, reducing the cost due to mass use. In addition to being able to reduce the size of construction equipment, it is also possible to prepare one type of excavator, crane, etc. that corresponds to the size of the equipment, making it possible to simplify and downsize construction equipment.
並列させた既製杭により、連続壁のように使
用すれば水平力の処理や液状化対策として有効
である。また、壁式RC構造の支持杭として利
用した場合、力の流れがスムーズとなり、断面
を小さくすることができる。また集合杭に方向
性をもたせ、配置を工夫することによりねじれ
等に対しても有効で、偏心した建物や、傾斜
地、支持地盤が傾斜している場合等にも容易に
対処できる。 When used as a continuous wall with ready-made piles arranged in parallel, it is effective in handling horizontal forces and as a countermeasure against liquefaction. Furthermore, when used as a support pile for a wall-type RC structure, the flow of force becomes smoother and the cross section can be made smaller. In addition, by giving pile piles directionality and carefully arranging them, it is effective against torsion, etc., and can easily be used in cases where eccentric buildings, sloped land, or supporting ground is sloped.
杭頭の曲げモーメント処理も合理的に行な
え、基礎梁（地中梁）が大幅に小さくなる。ま
た、フーチングのへりあきが現状では杭径Ｄに
対し１，２Ｄ要求されているが、大径でないの
で、フーチングも小さくなる。 The bending moment of the pile head can be handled rationally, and the size of the foundation beam (underground beam) can be significantly reduced. Furthermore, although the edge clearance of the footing is currently required to be 1.2D relative to the pile diameter D, since the diameter is not large, the footing will also be small.
第１図ａ，ｂはそれぞれこの発明の工法によつ
て施工された集合杭の一例を示す横断面図と建断
面図、第２図ａ，ｂ，ｃ，ｄは種々の配置例を示
す平面図、第３図〜第５図は施工手順の一例を示
したもので、第３図ａ、第４図ａ、第５図ａは平
面図、第３図ｂ、第４図ｂ、第５図ｂは縦断面
図、第６図ａ，ｂおよび第７図ａ，ｂは杭の配置
転換の例を示す平面図、第８図ａ，ｂは敷地の高
度利用のための杭の配置転換の例を示す縦断面
図、第９図ａ，ｂはフーチングと杭配置の関係を
示す平面図、第１０図はフーチングと杭配置の関
係を示す縦断面図、第１１図ａ，ｂは増杭による
集合杭の例を示す平面図、第１２図ａ，ｂは傾斜
支持層への適用例を示す縦断面図である。
１……集合杭、２……既製杭、３……掘削孔、
４……充填材、４ａ……根固め液、４ｂ……周辺
固定液、５……支持層、６……フーチング。
Figures 1 a and b are cross-sectional views and construction cross-sectional views showing examples of pile piles constructed using the construction method of the present invention, respectively, and Figures 2 a, b, c, and d are plane views showing various arrangement examples. Figures 3 to 5 show an example of the construction procedure. Figures 3a, 4a, and 5a are plan views, and Figures 3b, 4b, Figure b is a vertical cross-sectional view, Figures 6 a, b and 7 a, b are plan views showing examples of relocation of piles, and Figure 8 a, b are rearrangement of piles for advanced use of the site. Figures 9a and b are plan views showing the relationship between footings and pile placement, Figure 10 is a vertical cross-sectional view showing the relationship between footings and pile placement, and Figures 11a and b are enlarged views. FIGS. 12a and 12b are a plan view showing an example of a set pile using piles, and a vertical cross-sectional view showing an example of application to an inclined support layer. 1...Collected piles, 2...Ready-made piles, 3...Drilled holes,
4... Filling material, 4a... Root hardening solution, 4b... Peripheral fixing solution, 5... Support layer, 6... Footing.
Claims (1)
穿孔し、各掘削孔内にそれぞれ既製杭を杭頭を揃
えた状態に建込み、各既製杭間の間〓に充填材を
充填硬化させることにより複数本の既製杭を一体
化することを特徴とする集合杭の造成工法。1. Drill multiple overlapping holes in the ground, place ready-made piles in each hole with their pile heads aligned, and fill and harden the space between each ready-made pile to create multiple holes. A construction method for pile piles characterized by integrating ready-made piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16538786A JPS6319340A (en) | 1986-07-14 | 1986-07-14 | Collecting pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16538786A JPS6319340A (en) | 1986-07-14 | 1986-07-14 | Collecting pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6319340A JPS6319340A (en) | 1988-01-27 |
| JPH0527726B2 true JPH0527726B2 (en) | 1993-04-22 |
Family
ID=15811422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16538786A Granted JPS6319340A (en) | 1986-07-14 | 1986-07-14 | Collecting pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319340A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134719A (en) * | 1986-11-25 | 1988-06-07 | Takenaka Komuten Co Ltd | Constructing method for pile-group-forming foundation pile |
| JPH0247420A (en) * | 1988-08-06 | 1990-02-16 | Kazuo Murazaki | Constructing method for foundation pile and its apparatus |
| JPH03234141A (en) * | 1990-02-08 | 1991-10-18 | Mitsubishi Electric Corp | Packet exchange |
| JPH05229860A (en) * | 1992-02-20 | 1993-09-07 | Matsushita Electric Works Ltd | Artificial marble having granite-tone pattern |
| JP2010236311A (en) * | 2009-03-31 | 2010-10-21 | Mitani Sekisan Co Ltd | Method for constructing pile foundation, and the pile foundation for use in the same |
-
1986
- 1986-07-14 JP JP16538786A patent/JPS6319340A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6319340A (en) | 1988-01-27 |
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