JPH01207530A - Vibration-proof pile and construction of vibration-proof pile - Google Patents
Vibration-proof pile and construction of vibration-proof pileInfo
- Publication number
- JPH01207530A JPH01207530A JP3238288A JP3238288A JPH01207530A JP H01207530 A JPH01207530 A JP H01207530A JP 3238288 A JP3238288 A JP 3238288A JP 3238288 A JP3238288 A JP 3238288A JP H01207530 A JPH01207530 A JP H01207530A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- seismic isolation
- elastic cushion
- cushion member
- vibration
- 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
Links
- 238000010276 construction Methods 0.000 title abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 239000002689 soil Substances 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Foundations (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、既成杭に免震ユニットを一体に組付けた免震
杭およびこの免震杭の施工方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a seismic isolation pile in which a seismic isolation unit is integrally assembled to a prefabricated pile, and a method for constructing this seismic isolation pile.
〔従来の技術］
従来の免震建造物は、抗地業の上に下部基礎スラブを載
せ、この下部基礎スラブ上に免震装置を介して建物の基
礎スラブを載せる工法を行っており、免震装置は現場の
地盤の特性、建造物の規模に応じてその都度設計製作し
ている。[Conventional technology] Conventional seismic isolation buildings are constructed using a construction method in which a lower foundation slab is placed on top of the earth resisting work, and the foundation slab of the building is placed on top of this lower foundation slab via a seismic isolation device. Seismic devices are designed and manufactured on a case-by-case basis depending on the characteristics of the ground at the site and the scale of the building.
Ｃ発明が解決しようとする課題〕
上記従来の免震建造物によると、その都度免震装置の設
計製作が必要であり、かつ基礎スラブが二重になって建
物の基礎スラブの高さが高くなる。Problems to be solved by invention C] According to the above-mentioned conventional seismic isolation building, it is necessary to design and manufacture a seismic isolation device each time, and the height of the foundation slab of the building is high because the foundation slab is doubled. Become.
従って工費が嵩み工期が延長するという問題があり、こ
の問題の改善が課題となっていた。Therefore, there was a problem that the construction cost would increase and the construction period would be extended, and improvement of this problem was an issue.
本発明は上記課題に対処すべくなされたものであって、
免震装置をユニット化して既成杭に組付け、工費の低減
、工期の短縮、基礎スラブの高さの低下をはかった免震
杭およびこの免震杭の施工方法を提供することを目的と
している。The present invention has been made to address the above problems, and includes:
The purpose of this project is to provide a seismic isolation pile that reduces construction costs, shortens the construction period, and lowers the height of the foundation slab by unitizing a seismic isolation device and assembling it onto an existing pile, as well as a method for constructing this seismic isolation pile. .
本発明は前記目的を達成するため、既成杭の柱頭部に鋼
棒ダンパー部材と弾性クッション部材から成る免震ユニ
ットを組付けて免震杭を構成し、この免震杭は既成杭を
杭打ちし、杭頭部に鋼棒ダンパー部材と弾性クンジョン
部材から成る免震ユニットを組付け、上記免震ユニット
の外周を保護部材で囲み、上記保護部材の外周に弾性ク
ッション部材を介在して覆土を施し、前記免震ユニット
上に基礎スラブを打設する施工方法を特徴としている。In order to achieve the above object, the present invention constructs a seismic isolation pile by assembling a seismic isolation unit consisting of a steel rod damper member and an elastic cushion member to the column head of a prefabricated pile, and this seismic isolation pile is made by driving the prefabricated pile into a pile. Then, a seismic isolation unit consisting of a steel rod damper member and an elastic cushion member is assembled to the pile head, the outer periphery of the seismic isolation unit is surrounded by a protective member, and the outer periphery of the protective member is covered with soil with an elastic cushion member interposed. The present invention is characterized by a construction method in which a foundation slab is placed on top of the seismic isolation unit.
〔作 用］
免震杭は、既成杭の杭頭部に直接鋼棒ダンパー部材と弾
性クッション部材から成る免震ユニットを組付けるもの
であるから免震ユニットを半数成品化することができ、
また建物の基礎スラブは免震構造を設けない場合と同様
、単一の基礎スラブですみ、建造工事費の低減、工期の
短縮および基礎スラブの高さの低下が可能となる。[Function] Since seismic isolation piles are made by assembling a seismic isolation unit consisting of a steel rod damper member and an elastic cushion member directly onto the pile head of a prefabricated pile, the seismic isolation unit can be manufactured in half.
In addition, a single foundation slab is required for the building as in the case without a seismic isolation structure, making it possible to reduce construction costs, shorten the construction period, and lower the height of the foundation slab.
〔実施例］ 以下本発明を図示の実施例に基いて説明する。〔Example] The present invention will be explained below based on illustrated embodiments.
第１図は本発明に係る免震杭の施工後の状態を示し、免
震杭１は、中空コンクリ−１−抗等の既成杭２の柱頭部
に免震ユニット３を組付けたもので、免震ユニント３は
柱頭中心部に組付けた柱鉄筋状の鋼棒ダンパー部材４と
、この鋼棒ダンパー部材４の外周に組付けた積層ゴム等
の弾性クッション部材５とから構成される。Figure 1 shows the state of the seismic isolation pile according to the present invention after construction, and the seismic isolation pile 1 is a structure in which a seismic isolation unit 3 is assembled to the column head of a prefabricated pile 2 such as a hollow concrete shaft. The seismic isolation unit 3 is composed of a steel rod damper member 4 in the form of column reinforcing bars attached to the center of the column head, and an elastic cushion member 5 such as laminated rubber attached to the outer periphery of the steel rod damper member 4.
上記免震杭１の施工方法は第２図乃至第５図に示すよう
に、まず所定場所に中空コンクリート杭等の既成杭２を
打設する。（第２図）。As shown in FIGS. 2 to 5, the method for constructing the seismic isolation pile 1 is to first drive a prefabricated pile 2 such as a hollow concrete pile into a predetermined location. (Figure 2).
抗頭の中空部に柱鉄筋状の鋼棒ダンパー部材４を、抗頭
より所定長さ延出して組込み、中詰めコンクリート６を
打って固定する（第３図）。A steel rod damper member 4 in the form of column reinforcing bars is installed in the hollow part of the shaft, extending a predetermined length from the shaft, and is fixed by pouring concrete filling 6 (FIG. 3).
抗頭の鋼棒ダンパー部材４の外周に積層ゴム等の弾性ク
ッション部材５を組付ける（第４図）。An elastic cushion member 5 such as laminated rubber is attached to the outer periphery of the steel rod damper member 4 of the head (FIG. 4).
弾性クッション部材５は杭径よりやや大径の上下のプレ
ート７．８間に杭径とばぼ同径の円環状積層ゴム材等を
挟んだもので、上プレート７の上面にはアンカー９が植
設されている。なお弾性クッション部材５は円環状に一
体形成したものでなく分割したものを鋼棒ダンパー部材
４の周囲に並べてもよい。The elastic cushion member 5 is made by sandwiching an annular laminated rubber material or the like having the same diameter as the pile diameter between upper and lower plates 7 and 8 having a diameter slightly larger than the pile diameter, and an anchor 9 on the upper surface of the upper plate 7. It is planted. Note that the elastic cushion member 5 is not integrally formed in an annular shape, but may be divided and arranged around the steel rod damper member 4.
鋼棒ダンパー部材４と弾性クッション部材５とから成る
免震ユニット３の外周を鋼板等の保護部材ｌＯで囲み、
次いで保護部材１０の外周に弾性クッション部材１１を
介在して免震ユニット３のほぼ上面まで覆土１２を施し
、この後免震ユニット３上に建物の基礎スラブ１３を打
設する（第５図）。The outer periphery of the seismic isolation unit 3 consisting of the steel rod damper member 4 and the elastic cushion member 5 is surrounded by a protective member lO such as a steel plate,
Next, a covering soil 12 is applied to the outer periphery of the protection member 10 with an elastic cushion member 11 interposed therebetween, almost up to the upper surface of the seismic isolation unit 3, and then a foundation slab 13 of the building is placed on the seismic isolation unit 3 (FIG. 5).
紙上の免震杭を用いた施工によると、縦方向の地震動は
主として積層ゴム等の弾性クッション部材５の弾性によ
って吸収され、横方向の地震動は鋼棒ダンパー部材４の
縦方向鋼棒の靭性および弾性クッション部材５の積層面
間の摩擦によって吸収されて基礎スラブ１３と一体の建
造物は免震され、また免震ユニット３とその周囲の地面
との相対変位は保護部材１０外周の弾性クッション部材
１１によって吸収される。According to the construction using seismic isolation piles on paper, the longitudinal seismic motion is mainly absorbed by the elasticity of the elastic cushion member 5 such as laminated rubber, and the lateral seismic motion is absorbed by the toughness of the longitudinal steel rod of the steel rod damper member 4. The building integrated with the foundation slab 13 is absorbed by the friction between the laminated surfaces of the elastic cushion member 5, and the relative displacement between the seismic isolation unit 3 and the ground around it is absorbed by the elastic cushion member on the outer periphery of the protection member 10. Absorbed by 11.
以上説明したように本発明は、既成杭の柱頭部に鋼棒ダ
ンパー部材と弾性クッション部（オから成る免震ユニッ
トを組付けて免震杭を構成するものであるから、杭径、
抗耐力、要求ハネ定数に応じた各種容Ｖの免震ユニント
を半数成品化して既成杭と３．■合せることによって、
建物の特性に適合した免震杭を低価格で提供でき、また
この免震杭は、既成杭を杭打ちし、杭頭部に鋼棒ダンパ
ー部材と弾性クンジョン部材から成る免震ユニッ１−を
組付け、上記免震ユニットの外周を保護部材で囲み、上
記保護部材の外周に弾性クッション部材を介在して覆土
を施し、前記免震ユニット上に基礎スラブを打設して施
工するから、基礎スラブは免震構造を設けない場合と同
様、単一の基礎スラブですみ、建造工事費の低減、工期
の短縮および基礎スラブの高さの低下が可能となり、免
震構造物の普及が実現される等の効果が得られる。As explained above, the present invention constitutes a seismic isolation pile by assembling a seismic isolation unit consisting of a steel rod damper member and an elastic cushion portion (O) to the column head of an existing pile.
3. Seismic isolation units of various sizes V according to the resistance strength and required spring constant are manufactured in half and used as ready-made piles. ■By combining
We can provide seismic isolation piles that match the characteristics of the building at a low price, and these seismic isolation piles are made by driving existing piles and installing a seismic isolation unit 1-1 consisting of a steel rod damper member and an elastic cushion member on the pile head. Assembling, the outer periphery of the seismic isolation unit is surrounded by a protection member, the outer periphery of the protection member is covered with earth with an elastic cushion member interposed, and a foundation slab is poured on the seismic isolation unit. As with the case where no base isolation structure is provided, only a single foundation slab is required, making it possible to reduce construction costs, shorten the construction period, and lower the height of the foundation slab, making it possible to popularize base isolation structures. Effects such as
また本発明の免震杭の施工は小規模工事ですむから、軽
量の精密機械等の基礎工事にも好適である。Furthermore, since the construction of the seismic isolation pile of the present invention requires only small-scale construction, it is also suitable for foundation construction of lightweight precision machinery, etc.
図面は本発明の一実施例を示し、第１図は本発明に係る
免震杭の施工後の状態を示した縦断面図、第２図乃至第
５図は同免震抗の施工方法を順を追って示した縦断面図
である。
１・・・免震杭、２・・・既成杭、３・・・免震ユニッ
ト４・・・鋼棒ダンパー部材、５・・・弾性クッション
部１０・・・保護部材、１１・・・弾性クッション部材
１３・・・基礎スラブ。The drawings show one embodiment of the present invention, and Fig. 1 is a longitudinal sectional view showing the state of the seismic isolation pile after construction, and Figs. 2 to 5 show the construction method of the seismic isolation pile. It is a longitudinal cross-sectional view shown sequentially. DESCRIPTION OF SYMBOLS 1... Seismic isolation pile, 2... Ready-made pile, 3... Seismic isolation unit 4... Steel bar damper member, 5... Elastic cushion part 10... Protection member, 11... Elasticity Cushion member 13...foundation slab.
Claims (2)
ョン部材から成る免震ユニットを組付けて成ることを特
徴とする免震杭。(1) A seismic isolation pile characterized in that a seismic isolation unit consisting of a steel rod damper member and an elastic cushion member is assembled to the pile head of a prefabricated pile.
弾性クッション部材から成る免震ユニットを組付け、上
記免震ユニットの外周を保護部材で囲み、上記保護部材
の外周に弾性クッション部材を介在して覆土を施し、前
記免震ユニット上に基礎スラブを打設することを特徴と
する免震杭の施工方法。(2) Driving a prefabricated pile, assembling a seismic isolation unit consisting of a steel rod damper member and an elastic cushion member on the pile head, surrounding the outer periphery of the seismic isolation unit with a protection member, and enclosing the outer periphery of the protection member with an elastic A method for constructing a seismic isolation pile, comprising: applying soil covering with a cushion member interposed therebetween, and driving a foundation slab onto the seismic isolation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63032382A JPH0625418B2 (en) | 1988-02-15 | 1988-02-15 | Seismic isolation pile and construction method of seismic isolation pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63032382A JPH0625418B2 (en) | 1988-02-15 | 1988-02-15 | Seismic isolation pile and construction method of seismic isolation pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01207530A true JPH01207530A (en) | 1989-08-21 |
| JPH0625418B2 JPH0625418B2 (en) | 1994-04-06 |
Family
ID=12357403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63032382A Expired - Lifetime JPH0625418B2 (en) | 1988-02-15 | 1988-02-15 | Seismic isolation pile and construction method of seismic isolation pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625418B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207676A (en) * | 2000-01-28 | 2001-08-03 | Fujita Corp | Damping structure for building |
| JP2003096795A (en) * | 2001-09-26 | 2003-04-03 | Daiwa House Ind Co Ltd | Base isolated building provided with pile |
| CN103174161A (en) * | 2013-03-18 | 2013-06-26 | 中天建设集团有限公司 | Anti-shock buttress based on rubber concrete |
| CN116290131A (en) * | 2023-04-04 | 2023-06-23 | 中铁西北科学研究院有限公司 | IGB shock insulation damper for lateral displacement of anti-slide pile self-adaptive pile in high-intensity area |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703022B (en) * | 2017-01-10 | 2019-07-09 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of uplift pile and its construction method of belt surface elasticity scale |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107117A (en) * | 1985-11-01 | 1987-05-18 | Ohbayashigumi Ltd | Connection structure of pile head and floor slab |
-
1988
- 1988-02-15 JP JP63032382A patent/JPH0625418B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107117A (en) * | 1985-11-01 | 1987-05-18 | Ohbayashigumi Ltd | Connection structure of pile head and floor slab |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207676A (en) * | 2000-01-28 | 2001-08-03 | Fujita Corp | Damping structure for building |
| JP2003096795A (en) * | 2001-09-26 | 2003-04-03 | Daiwa House Ind Co Ltd | Base isolated building provided with pile |
| CN103174161A (en) * | 2013-03-18 | 2013-06-26 | 中天建设集团有限公司 | Anti-shock buttress based on rubber concrete |
| CN116290131A (en) * | 2023-04-04 | 2023-06-23 | 中铁西北科学研究院有限公司 | IGB shock insulation damper for lateral displacement of anti-slide pile self-adaptive pile in high-intensity area |
| CN116290131B (en) * | 2023-04-04 | 2023-09-19 | 中铁西北科学研究院有限公司 | IGB shock insulation damper for lateral displacement of anti-slide pile self-adaptive pile in high-intensity area |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0625418B2 (en) | 1994-04-06 |
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