JPH10183660A - Foundation structure of building - Google Patents
Foundation structure of buildingInfo
- Publication number
- JPH10183660A JPH10183660A JP35505696A JP35505696A JPH10183660A JP H10183660 A JPH10183660 A JP H10183660A JP 35505696 A JP35505696 A JP 35505696A JP 35505696 A JP35505696 A JP 35505696A JP H10183660 A JPH10183660 A JP H10183660A
- Authority
- JP
- Japan
- Prior art keywords
- building
- recesses
- ground
- foundation
- improved ground
- 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
Landscapes
- Foundations (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は建造物の基礎構造に
関し、詳しくは地震時に有効に対処可能な建造物の基礎
構造に関するものである。The present invention relates to a foundation structure of a building, and more particularly to a foundation structure of a building that can effectively cope with an earthquake.
【０００２】[0002]
【従来の技術】従来の建造物の基礎構造は、軟弱地盤上
に建てる場合、地盤を固化材等で固めて地盤改良を行
い、この改良地盤上に建造物の基礎の施工をしている。2. Description of the Related Art Conventionally, when a foundation of a building is built on soft ground, the ground is hardened with a solidifying material or the like to improve the ground, and the foundation of the building is constructed on the improved ground.
【０００３】[0003]
【発明が解決しようとする課題】近年、埋め立て地等、
軟弱地盤上の造成地が増えているが、軟弱地盤上に建て
られた家屋は硬い地盤上に建てられたものに比べ、大き
な地震で沈下したり傾いたりする可能性が非常に大きい
のである。In recent years, landfills and the like,
Although more land is being built on soft ground, houses built on soft ground are much more likely to sink or tilt due to large earthquakes than those built on hard ground.
【０００４】そして、地盤調査結果に基づき、基礎の補
強工事も行われているが、それは平常時の地耐力の向上
を主目的としており、耐震性まで考慮した場合は基礎に
かかる費用が莫大になり、上に建てられる家屋の建設費
用とのバランスが取れないことが多い。[0004] Based on the results of the ground survey, foundation reinforcement work is also being carried out. The main purpose is to improve the ground strength in normal times, and the cost of the foundation is enormous when considering earthquake resistance. In many cases, it is not possible to balance the cost of building a house to be built on it.
【０００５】しかし、大きな地震の時、もしも基礎が折
れるような不同沈下が発生すれば、当然ながら家屋の方
にも亀裂や歪み等の現象が生じる。このように、基礎が
折れるような事態に至る可能性を少なくするには、基礎
の剛性を高め強固にしなければならない。そこで、基礎
下の地盤を、セメント系の固化材で固める地盤改良を行
っているが、地盤改良をすることで、それ自体にも耐震
性に対する向上はあるものの、地震の規模次第では、や
はり、家屋が沈下したり、傾くことも十分に考えられ
る。[0005] However, in the case of a large earthquake, if uneven settlement such as breakage of the foundation occurs, naturally cracks and distortions also occur in the house. Thus, in order to reduce the possibility that the foundation will break, it is necessary to increase the rigidity of the foundation. Therefore, the ground under the foundation has been improved by solidifying it with cement-based solidifying material.Although the ground improvement has its own seismic resistance, depending on the magnitude of the earthquake, It is quite possible for houses to sink or tilt.
【０００６】そして、家屋が一旦沈下したり傾いた場
合、修正するのが著しく困難であり、一般的には基礎の
下を部分的に掘り下げ、鋼管杭やコンクリートでジャッ
キの反力を設け、ジャッキを設置して持ち上げる方法で
修正するか、又はジャッキの代わりに耐圧用グラウトジ
ャケットを設置して、グラウト注入による圧力で家屋を
持ち上げ修正しなければならないが、何れにしても、家
屋の床下は狭くて作業がしづらい上、改良地盤は固くて
容易に掘ることができない。又、床下での作業が困難な
時は、床や壁の一部を壊して大掛かりな作業となってい
たのである。[0006] Once the house sinks or tilts, it is extremely difficult to correct it. Generally, a part of the house is dug down under the foundation, and the reaction force of the jack is provided with a steel pipe pile or concrete to provide a jack. Must be fixed by installing and lifting, or by installing a pressure-resistant grout jacket instead of a jack, and the house must be lifted and corrected by the pressure caused by grouting, but in any case, the underfloor of the house is narrow. In addition, the work is difficult and the improved ground is hard and cannot be dug easily. Also, when it was difficult to work under the floor, the floor and a part of the wall were broken and the work was extensive.
【０００７】上記点より本発明は、大きな地震等で改良
地盤上に建造された家屋等が沈下したり、傾いたりして
も簡単に修正することが可能な建造物の基礎構造を提供
しようとするものである。In view of the above, the present invention aims to provide a foundation structure of a building which can be easily corrected even if a house or the like built on the improved ground sinks or tilts due to a large earthquake or the like. Is what you do.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
本発明は、布基礎の下面と接触する改良地盤の上面の要
所にジャッキ挿入用の凹部が設けられ、凹部は布基礎の
下面より建造物の外側に延長し、この凹部に砂、砕石等
の充填物が装填されていることを特徴とするものであ
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a concave portion for jack insertion is provided at a key point on the upper surface of the improved ground in contact with the lower surface of the cloth foundation. The present invention is characterized in that it extends to the outside of the building, and the recess is filled with a filler such as sand or crushed stone.
【０００９】上記構成を有する本発明は、地震で建造物
が沈下したり、傾いた場合はスコップ等で地表より掘り
下げ、改良地盤の凹部に装填されている砂、砕石等の充
填物をスコップ等で掘り出せば、凹部は空となり、ジャ
ッキを凹部内に設置することができる。砂、砕石等の充
填物の掘り出し作業、及びジャッキの設置作業に際して
は、凹部が布基礎の下面より建造物の外側に延長してい
るため、建造物の外部より容易に行うことができる。
又、充填物の掘り出し作業に於いては、砂、砕石等の充
填物は固化を受けていないので簡単に掘り出しが可能で
ある。According to the present invention having the above-described structure, when a building subsides or tilts due to an earthquake, the building is dug down from the surface of the ground with a scoop or the like, and the filler such as sand and crushed stone loaded in the concave portion of the improved ground is scooped. If it is dug out, the recess becomes empty and the jack can be installed in the recess. When digging a filler such as sand, crushed stone, or the like, and installing a jack, the concave portion extends from the lower surface of the cloth foundation to the outside of the building, so that it can be easily performed from outside the building.
In the work of excavating the filler, the filler such as sand and crushed stone is not solidified, so that it can be easily excavated.
【００１０】又、ジャッキの設置は凹部の底部となる改
良地盤は固く、十分にジャッキ反力となり得るため、こ
のジャッキにより布基礎の下面より沈下したり、傾いた
りしている基礎を押し上げ建造物を修正できる。In addition, when the jack is installed, the improved ground which is the bottom of the concave portion is hard and the jack can be sufficiently reacted with the jack. Therefore, the jack pushes up the foundation which is sunk or inclined from the lower surface of the cloth foundation. Can be modified.
【００１１】[0011]
【発明の実施の形態】以下、本発明の一実施の形態を図
面に基づき説明する。図１は本発明建造物の基礎構造の
一実施の形態を示す正面図、図２は同上の部分拡大斜視
図、図３は同上のジャッキ使用時の断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the foundation structure of the building of the present invention, FIG. 2 is a partially enlarged perspective view of the same, and FIG. 3 is a cross-sectional view when the jack is used.
【００１２】而して、図中１は改良地盤でありセメント
系の固化材で固められている。セメント系固化材の添加
量は、８０〜１５０ｋｇｆ／ｍ3程度で土の状態に合わ
せ調節する。改良地盤の固さは、一軸圧縮強度ｑｕ＝
２．０〜３．０ｋｇｆ／ｃｍ2程度変形係数Ｅ＝１，５
００〜５，０００ｔｆ／ｍ2程度とする。[0012] In the figure, reference numeral 1 denotes an improved ground, which is solidified with a cement-based solidifying material. The addition amount of the cement-based solidifying material is adjusted to about 80 to 150 kgf / m 3 according to the state of the soil. The hardness of the improved ground is determined by the uniaxial compressive strength qu =
2.0 to 3.0 kgf / cm 2 Deformation coefficient E = 1,5
It is set to about 00 to 5,000 tf / m 2 .
【００１３】２は改良地盤１上に施工された布基礎であ
る。３は改良地盤１と布基礎２の下面と接触する改良地
盤１の要所に設けたジャッキ挿入用凹部であり、凹部３
は布基礎２の長手方向に間隔を於いて設けられる。凹部
３は地盤の改良時、地盤が硬化する前であれば、スコッ
プ等で簡単に掘ることができる。Reference numeral 2 denotes a cloth foundation constructed on the improved ground 1. Reference numeral 3 denotes a jack insertion recess provided at a key point of the improved ground 1 which comes into contact with the lower surface of the improved ground 1 and the cloth foundation 2.
Are provided at intervals in the longitudinal direction of the fabric base 2. The concave portion 3 can be easily dug with a scoop or the like if the ground is not cured when the ground is improved.
【００１４】凹部３は布基礎２の下面より建造物４の外
側に延長し、その長さは約５０ｃｍ、深さ約３０ｃｍ
、幅２０ｃｍ程度の大きさとする。そして、凹部３内
に砂、砕石等の充填物５が装填され、地耐力の低下に影
響がでないようになっている。尚、図中６はジャッキ、
７は地表である。The recess 3 extends from the lower surface of the fabric base 2 to the outside of the building 4 and has a length of about 50 cm and a depth of about 30 cm.
And a width of about 20 cm. Then, a filler 5 such as sand, crushed stone, or the like is loaded in the concave portion 3 so that there is no influence on a decrease in ground bearing capacity. 6 is a jack,
7 is the ground surface.
【００１５】[0015]
【発明の効果】本発明に依れば、建造物が大きな地震等
で沈下したり、傾いたりしても凹部内の充填物を掘り出
し、凹部にジャッキを設置して建造物を持ち上げ、修正
が可能である。又、ジャッキの設置に際しては建造物の
外部から凹部に設置可能で、改良地盤は固く十分にジャ
ッキ反力となり得るため、鋼管杭やコンクリート等の反
力を必要としないので、床下の狭い場所での困難な作業
がなくなるものである。このように、本発明は基礎の施
工時にあらかじめ地震等に対処し得るように準備してあ
るため、従来のように建造物が沈下したり傾いたりした
後で対処しなければならなかった困難さに比べ非常に簡
単に建造物の沈下や傾斜の修正を行うことができる有用
な発明である。According to the present invention, even if the building sinks or tilts due to a large earthquake or the like, the filler in the recess is dug out, the jack is installed in the recess, and the building is lifted. It is possible. In addition, when installing the jack, it can be installed in the recess from the outside of the building, and the improved ground can be firmly and sufficiently reacted with the jack, so there is no need for the reaction force of steel pipe piles, concrete, etc. This eliminates difficult tasks. As described above, since the present invention is prepared so as to be able to cope with an earthquake or the like at the time of foundation construction, difficulties that had to be dealt with after a building has settled down or tilted as in the prior art. This is a useful invention that makes it possible to very easily correct the settlement and inclination of a building as compared with the invention.
【図１】本発明建造物の基礎構造の一実施の形態を示す
正面図である。FIG. 1 is a front view showing an embodiment of a foundation structure of a building according to the present invention.
【図２】本発明建造物の基礎構造の一実施の形態を示す
部分拡大斜視図である。FIG. 2 is a partially enlarged perspective view showing an embodiment of the foundation structure of the building of the present invention.
【図３】本発明建造物の基礎構造のジャッキ使用時の断
面図である。FIG. 3 is a cross-sectional view of the foundation structure of the building of the present invention when a jack is used.
１ 改良地盤 ２ 布基礎 ３ 凹部 ４ 建造物 ５ 充填物 ６ ジャッキ ７ 地表 DESCRIPTION OF SYMBOLS 1 Improved ground 2 Cloth foundation 3 Depression 4 Building 5 Filling 6 Jack 7 Ground surface
Claims (1)
の要所にジャッキ挿入用の凹部が設けられ、凹部は布基
礎の下面より建造物の外側に延長し、この凹部に砂、砕
石等の充填物が装填されていることを特徴とする建造物
の基礎構造。A concave portion for jack insertion is provided at a key point on the upper surface of the improved ground in contact with the lower surface of the cloth foundation, and the concave portion extends from the lower surface of the cloth foundation to the outside of the building. The basic structure of a building characterized by being loaded with a filler such as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35505696A JP3767710B2 (en) | 1996-12-20 | 1996-12-20 | Foundation structure of the building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35505696A JP3767710B2 (en) | 1996-12-20 | 1996-12-20 | Foundation structure of the building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10183660A true JPH10183660A (en) | 1998-07-14 |
| JP3767710B2 JP3767710B2 (en) | 2006-04-19 |
Family
ID=18441682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35505696A Expired - Lifetime JP3767710B2 (en) | 1996-12-20 | 1996-12-20 | Foundation structure of the building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3767710B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007154525A (en) * | 2005-12-06 | 2007-06-21 | Sumitomo Forestry Co Ltd | Settlement correcting foundation structure |
| JP2007327309A (en) * | 2006-06-07 | 2007-12-20 | Takahashi Kanri:Kk | Uneven settlement correction construction method by steel plate footing system |
| CN108952753A (en) * | 2018-06-11 | 2018-12-07 | 长安大学 | Automatic adjustably crack area tunnel adjustment of route alignment and gradient structure and its construction method |
| CN113774955A (en) * | 2021-10-25 | 2021-12-10 | 中国电建集团贵州工程有限公司 | Method for preventing uneven settlement in subsidence area and fan foundation structure thereof |
-
1996
- 1996-12-20 JP JP35505696A patent/JP3767710B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007154525A (en) * | 2005-12-06 | 2007-06-21 | Sumitomo Forestry Co Ltd | Settlement correcting foundation structure |
| JP2007327309A (en) * | 2006-06-07 | 2007-12-20 | Takahashi Kanri:Kk | Uneven settlement correction construction method by steel plate footing system |
| CN108952753A (en) * | 2018-06-11 | 2018-12-07 | 长安大学 | Automatic adjustably crack area tunnel adjustment of route alignment and gradient structure and its construction method |
| CN108952753B (en) * | 2018-06-11 | 2023-09-29 | 长安大学 | Automatic adjustable ground crack region tunnel line and slope adjusting structure and construction method thereof |
| CN113774955A (en) * | 2021-10-25 | 2021-12-10 | 中国电建集团贵州工程有限公司 | Method for preventing uneven settlement in subsidence area and fan foundation structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3767710B2 (en) | 2006-04-19 |
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