JP3702438B2 - Structure of resistance to ground lateral flow pressure of structure foundation - Google Patents
Structure of resistance to ground lateral flow pressure of structure foundation Download PDFInfo
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- JP3702438B2 JP3702438B2 JP26547196A JP26547196A JP3702438B2 JP 3702438 B2 JP3702438 B2 JP 3702438B2 JP 26547196 A JP26547196 A JP 26547196A JP 26547196 A JP26547196 A JP 26547196A JP 3702438 B2 JP3702438 B2 JP 3702438B2
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- ground
- lateral flow
- structure foundation
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Description
【０００１】
【発明の属する技術分野】
本発明は、構造物基礎の地盤側方流動圧に対する抵抗構造に関するものである
。
【０００２】
【発明が解決しようとする課題】
地震により地盤に液状化が発生すると、護岸などの水際線の構造物が海側に移動し、背面土もそれに引きつられて水平に移動したり、地層の傾斜に起因して地盤が水平に移動する、いわゆる地盤の側方流動現象が生じる。そのため、この側方流動圧に抵抗できる構造物の基礎構造が希求されている。従来は、基礎杭を増設したり、構造物基礎の周囲を地下連続壁等で取り巻く方法が採用されている。
しかしこれらの方法は、いずれも多大な工費を必要とし、また工期に長期間を要する欠点がある。
【０００３】
【発明の目的】
本発明は、上記のような問題点を解決するためになされたもので、地盤の側方流動圧に十分抵抗でき、しかも工費の削減と工期の短縮化が図れる構造物基礎の地盤側方流動圧に対する抵抗構造を提供することを目的とする。
【０００４】
【課題を解決するための手段】
上記課題を解決するための手段として、本発明は、地盤の液状化により発生する地盤の側方流動に抵抗可能な構造物基礎において、前記側方流動が予想される地盤中の前記構造物基礎の上流側地盤に、非液状化地盤層まで根入れを行って控杭を構築し、この控杭と前記構造物基礎とを連結材で連結して構成したことを特徴とする、構造物基礎の地盤側方流動圧に対する抵抗構造を提供する。
【０００５】
また、地盤の液状化により発生する地盤の側方流動に抵抗可能な構造物基礎において、前記側方流動が予想される地盤中の前記構造物基礎の上流側及び下流側地盤に、非液状化地盤層まで根入れを行って控杭を構築し、これらの控杭と前記構造物基礎とを連結材で連結して構成したことを特徴とする、構造物基礎の地盤側方流動圧に対する抵抗構造を提供する。
【０００６】
さらに、上記構造物基礎の地盤側方流動圧に対する抵抗構造において、前記連結材にタイロッドを用いたことを特徴とする、構造物基礎の地盤側方流動圧に対する抵抗構造を提供する。
【０００７】
【発明の実施の形態】
以下、図面を参照しながら、本発明の一実施の形態について説明する。
＜イ＞控杭の構築
図１、２に示すように、地震時の地盤液状化により発生する地盤の側方流動が予想される地盤中であって、構造物基礎１の上流側地盤Ａ及び下流側地盤Ｂに、非液状化地盤層Ｃまで根入れを行って控杭２を構築する。
【０００８】
構造物基礎１は、例えば、橋脚等のフ−チング１１の底部に複数の基礎杭１２を構築した構造物とし、控杭２は、この構造物基礎１から所定の間隔をおいて上流側地盤Ａと下流側地盤Ｂに所要数構築する。
【０００９】
地盤の側方流動方向は、構造物基礎１の近傍に存在する護岸に向かう方向、または地層が傾斜している場合はその傾斜方向となる。
【００１０】
＜ロ＞連結材
控杭２と構造物基礎１との上部間は、タイロッドなどの連結材３で水平方向に連結する。また、側方流動方向が特定の向きに予想し難い場合には、連結材４のように斜め方向の連結材も加えて連結する。
【００１１】
これによって、構造物基礎１が控杭２群に係留された状態となるため、構造物基礎１に作用する側方流動圧に十分抵抗することが可能となる。なお、側方流動方向が特定できる場合には、控杭２は上流側地盤Ａにのみ構築する構造であってもよい。
【００１２】
【発明の効果】
本発明は以上説明したように、構造物基礎の周囲に控杭を構築し、この控杭と構造物基礎とを連結材で連結することによって、地盤の側方流動圧に十分抵抗することができる。しかも簡単な構造であるため、コストの低減と工期の短縮を図ることも可能となる。
【図面の簡単な説明】
【図１】 本発明の一実施の形態の平面図
【図２】 本発明の一実施の形態の側面図[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for resistance to ground lateral flow pressure of a structure foundation.
[0002]
[Problems to be solved by the invention]
When liquefaction occurs in the ground due to an earthquake, the structure of the coastline such as the revetment moves to the sea side, and the back soil also moves horizontally, and the ground moves horizontally due to the slope of the stratum. The so-called lateral flow phenomenon of the ground occurs. Therefore, there is a demand for a basic structure of a structure that can resist this lateral flow pressure. Conventionally, a method has been adopted in which foundation piles are added or the structure foundation is surrounded by a continuous underground wall or the like.
However, each of these methods has a drawback that it requires a large construction cost and requires a long period of time.
[0003]
OBJECT OF THE INVENTION
The present invention was made in order to solve the above-described problems, and can sufficiently resist the lateral flow pressure of the ground, and the ground lateral flow of the structure foundation can reduce the construction cost and the construction period. An object is to provide a resistance structure against pressure.
[0004]
[Means for Solving the Problems]
As a means for solving the above problems, the present invention provides a structure foundation capable of resisting lateral flow of the ground caused by liquefaction of the ground, and the structure foundation in the ground where the lateral flow is expected. A structure foundation characterized in that a holding pile is constructed by piercing the non-liquefied ground layer in the upstream side of the foundation, and the holding pile is connected to the structure foundation with a connecting material. Provides resistance to ground side fluid pressure.
[0005]
Further, in the structure foundation that can resist the lateral flow of the ground generated by the liquefaction of the ground, non-liquefaction is applied to the upstream and downstream ground of the structure foundation in the ground where the lateral flow is expected. The resistance to the ground lateral flow pressure of the structure foundation characterized in that the holding piles are constructed by piercing to the ground layer, and these holding piles and the structure foundation are connected by a connecting material. Provide structure.
[0006]
Furthermore, in the resistance structure with respect to the ground side fluid pressure of the structure foundation, a resistance structure against the ground side fluid pressure of the structure foundation is provided, wherein a tie rod is used as the connecting member.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<I> Construction of the holding pile As shown in FIGS. 1 and 2, in the ground where the lateral flow of the ground caused by ground liquefaction at the time of the earthquake is expected, the upstream ground A of the structure foundation 1 and The
[0008]
The structure foundation 1 is, for example, a structure in which a plurality of
[0009]
The lateral flow direction of the ground is the direction toward the revetment existing in the vicinity of the structure foundation 1 or, if the formation is inclined, the direction of inclination.
[0010]
<B> The upper portion of the connecting
[0011]
As a result, the structure foundation 1 is moored to the
[0012]
【The invention's effect】
As described above, the present invention can sufficiently resist the lateral flow pressure of the ground by constructing a holding pile around the structure foundation and connecting the holding pile and the structure foundation with a connecting material. it can. In addition, since the structure is simple, it is possible to reduce costs and shorten the construction period.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment of the present invention. FIG. 2 is a side view of an embodiment of the present invention.
Claims (3)
前記側方流動が予想される地盤中の前記構造物基礎の上流側地盤に、非液状化地盤層まで根入れを行って控杭を構築し、
この控杭と前記構造物基礎とを連結材で連結して構成したことを特徴とする、
構造物基礎の地盤側方流動圧に対する抵抗構造。In the structure foundation that can resist the lateral flow of the ground caused by liquefaction of the ground,
In the upstream ground of the structure foundation in the ground where the lateral flow is expected, a non-liquefied ground layer is embedded to construct a holding pile,
The holding pile and the structure foundation are connected by a connecting material,
Resistance structure against ground lateral flow pressure of structure foundation.
前記側方流動が予想される地盤中の前記構造物基礎の上流側及び下流側地盤に、非液状化地盤層まで根入れを行って控杭を構築し、
これらの控杭と前記構造物基礎とを連結材で連結して構成したことを特徴とする、
構造物基礎の地盤側方流動圧に対する抵抗構造。In the structure foundation that can resist the lateral flow of the ground caused by liquefaction of the ground,
In the upstream and downstream ground of the structure foundation in the ground where the lateral flow is expected, a holding pile is constructed by rooting to the non-liquefied ground layer,
These holding piles and the structure foundation are connected and connected with a connecting material.
Resistance structure against ground lateral flow pressure of structure foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26547196A JP3702438B2 (en) | 1996-09-13 | 1996-09-13 | Structure of resistance to ground lateral flow pressure of structure foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26547196A JP3702438B2 (en) | 1996-09-13 | 1996-09-13 | Structure of resistance to ground lateral flow pressure of structure foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1088587A JPH1088587A (en) | 1998-04-07 |
| JP3702438B2 true JP3702438B2 (en) | 2005-10-05 |
Family
ID=17417637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26547196A Expired - Fee Related JP3702438B2 (en) | 1996-09-13 | 1996-09-13 | Structure of resistance to ground lateral flow pressure of structure foundation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3702438B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995666A (en) * | 2011-09-13 | 2013-03-27 | 上海市基础工程有限公司 | Construction method for reducing effect of vibration on peripheral buildings (structures) |
| JP2016017394A (en) * | 2014-07-11 | 2016-02-01 | 株式会社ドーコン | Displacement suppressor and installation method for the same |
| CN110512636B (en) * | 2019-08-30 | 2021-03-09 | 东南大学 | A composite isolation foundation of double-layer staggered long and short piles suitable for strong earthquakes |
| JP7226725B1 (en) * | 2022-01-26 | 2023-02-21 | 国立大学法人神戸大学 | Diagonal support pile type sheet pile quay |
-
1996
- 1996-09-13 JP JP26547196A patent/JP3702438B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1088587A (en) | 1998-04-07 |
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