JPS637418A - Pile body capable of reducing negative peripheral frictional force - Google Patents
Pile body capable of reducing negative peripheral frictional forceInfo
- Publication number
- JPS637418A JPS637418A JP15107786A JP15107786A JPS637418A JP S637418 A JPS637418 A JP S637418A JP 15107786 A JP15107786 A JP 15107786A JP 15107786 A JP15107786 A JP 15107786A JP S637418 A JPS637418 A JP S637418A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- piles
- frictional force
- peripheral frictional
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 title abstract 3
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
構築物等の構築の際に打設した杭が後日地盤の自重とか
他の荷重によって圧密されることにより地盤が沈下し、
杭に対して下向きの周面摩擦力を与え杭を引き下げるよ
うな作用をする杭の負の周面摩擦力を低減させることが
できるようにした杭本体の発明である。[Detailed Description of the Invention] [Industrial Application Field] Piles driven during the construction of a structure, etc. are later consolidated by the ground's own weight or other loads, resulting in the ground sinking.
This is an invention of a pile main body that can reduce the negative circumferential friction force of a pile that applies a downward circumferential surface friction force to the pile and acts to pull down the pile.
従来、圧密層、シルト層等で杭に負の周面摩擦力が働く
ように地盤においては杭の本数を増加して防止していた
ものである。Conventionally, this has been prevented by increasing the number of piles in the ground so that negative circumferential frictional force acts on the piles due to consolidation layers, silt layers, etc.
従って杭の本体に対する資材費増加、打設作業の増加等
の欠点があったものである。Therefore, there were disadvantages such as increased material costs for the pile body and increased driving work.
圧密層、シルト層にて杭に対し負の周面摩擦力がおきる
という問題点を解決しようとする発明である。This invention attempts to solve the problem that negative circumferential frictional force is generated against the pile in the consolidated layer and the silt layer.
打設する杭において、打設地盤の圧密層区間に位置する
杭の外周に合成樹脂フィルムを巻き付け接着剤にて固定
被覆し、圧密層、シルト層にて生ずる杭に対する負の周
面摩擦力を低減した杭本体の発明である。For piles to be driven, a synthetic resin film is wrapped around the outer periphery of the pile located in the consolidated layer section of the driving ground and fixed and coated with adhesive to reduce the negative circumferential friction force against the pile that occurs in the consolidated layer and silt layer. This is an invention of a reduced pile body.
打設地盤のポーリング資料により圧密層区間を判定して
杭を打設した時に圧′密層区間に位置する杭の外周に合
成樹脂フィルムを巻き付け接着剤にて固定被覆し、該杭
を所定地盤の砂層、砂礫層等の安定地盤まで打設するも
のである。When the consolidated layer section is determined based on polling data of the driving ground and the pile is driven, a synthetic resin film is wrapped around the outer periphery of the pile located in the compacted layer section, fixed and covered with adhesive, and the pile is placed in the specified ground. The concrete is poured into stable ground such as a sand layer or gravel layer.
試験の結果を第３図、第４図にて比較して見ると未処理
の杭と合成樹脂フィルムを被覆した摩擦抵抗値は約第１
の値であって、杭の支持力の計算よりして杭の本数を減
らし杭等の節減を図ることができる。Comparing the test results in Figures 3 and 4, the frictional resistance values for untreated piles and those coated with synthetic resin film are approximately 1st.
By calculating the bearing capacity of piles, it is possible to reduce the number of piles and save on piles, etc.
打設する杭（１）において、打設地盤の圧密層、シルト
層区間（２）に位置する杭（１）外周にポリエチレンフ
ィルム（３）を巻き付け接着剤にて固定被覆して成るも
のである。In the pile (1) to be driven, a polyethylene film (3) is wrapped around the outer periphery of the pile (1) located in the consolidated layer and silt layer section (2) of the driving ground and fixed and covered with adhesive. .
該杭（１）を所定地盤（４）に打設するものである。The pile (1) is driven into a predetermined ground (4).
第３図及び第４図に示すように未処理の杭と合成樹脂フ
ィルムを被覆した杭とは摩擦抵抗値は約Ｚの値である。As shown in FIGS. 3 and 4, the frictional resistance value of the untreated pile and the pile coated with a synthetic resin film is approximately Z.
従って杭の支持力の計算よシして杭本数の節減に継がる
等の効果を有する。Therefore, it has the effect of reducing the number of piles by calculating the bearing capacity of the piles.
第１図は杭の正面図、第２図は杭を打設した地盤の断面
図、第３図及び第４図は本発明の杭及び未処理の杭の抵
抗力と変位置のグラフ図である。
ｔ（α量（糟ｍ）
０、細−拘エチレンフィルム内を触１台臭隻位１（１）
焦票ｆｌＩ室賊祐泉Figure 1 is a front view of the pile, Figure 2 is a cross-sectional view of the ground where the pile is driven, and Figures 3 and 4 are graphs of the resistance force and displacement of the pile of the present invention and untreated piles. be. t (amount (m)) 0, touching the inside of the finely bound ethylene film 1 unit odor level 1 (1)
Claims (1)
置する杭の外周に合成樹脂フィルムを巻き付け接着剤に
て固定被覆して成る負の周面摩擦力を低減する杭本体。(1) A pile main body that reduces negative circumferential frictional force by wrapping a synthetic resin film around the outer periphery of the pile located in the consolidated layer section of the driving ground and fixing it with adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15107786A JPS637418A (en) | 1986-06-27 | 1986-06-27 | Pile body capable of reducing negative peripheral frictional force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15107786A JPS637418A (en) | 1986-06-27 | 1986-06-27 | Pile body capable of reducing negative peripheral frictional force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS637418A true JPS637418A (en) | 1988-01-13 |
Family
ID=15510807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15107786A Pending JPS637418A (en) | 1986-06-27 | 1986-06-27 | Pile body capable of reducing negative peripheral frictional force |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS637418A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5664021A (en) * | 1979-10-26 | 1981-06-01 | Sumika Doken Sekkei:Kk | Elimination of negative friction exerting on support pile |
-
1986
- 1986-06-27 JP JP15107786A patent/JPS637418A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5664021A (en) * | 1979-10-26 | 1981-06-01 | Sumika Doken Sekkei:Kk | Elimination of negative friction exerting on support pile |
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