JPH0261225A - Low-rise construction of weak ground - Google Patents
Low-rise construction of weak groundInfo
- Publication number
- JPH0261225A JPH0261225A JP21330288A JP21330288A JPH0261225A JP H0261225 A JPH0261225 A JP H0261225A JP 21330288 A JP21330288 A JP 21330288A JP 21330288 A JP21330288 A JP 21330288A JP H0261225 A JPH0261225 A JP H0261225A
- Authority
- JP
- Japan
- Prior art keywords
- foundation
- double
- construction
- low
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011150 reinforced concrete Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000007596 consolidation process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004567 concrete Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は軟弱地盤上に建設される低層構築物の基礎の構
造に係り、とくに、構築物が鉄筋コンクリート造である
場合に、不等沈下を生じないように、その基礎を二重に
形成して軟弱地盤上に安定して建設することができる。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of the foundation of a low-rise structure constructed on soft ground, and in particular, when the structure is made of reinforced concrete, uneven settlement does not occur. By forming a double foundation, it can be stably constructed on soft ground.
軟弱地盤上の低層構築物の基礎に関するものである。It concerns the foundations of low-rise structures on soft ground.
［従来の技術］
最近、海岸等に近接して建築物を構築し、土地の有効利
用を図ることが多く行われるようになってきているが、
いわゆるウォーターフロントでは堅硬な地盤が得られる
ことは稀であり、鉄筋コンクリート造等の建築物では、
何よりもまず、軟弱地盤に対する基礎の構造が肝要であ
る。[Prior Art] Recently, it has become common to construct buildings close to the coast, etc., in order to make effective use of land.
It is rare to find solid ground on the so-called waterfront, and buildings made of reinforced concrete, etc.
First and foremost, the foundation structure for soft ground is essential.
従来の基礎構造では、低層のコンクリート造建築物でも
、堅固な支持地！！ＩＮまで長い支持杭による杭地業を
行って不等沈下を防止するか、短い摩擦杭によって沈下
を許容することが行われていた。Conventional foundation structures provide solid support even for low-rise concrete buildings! ! The practice was to either prevent uneven settlement by using long support piles up to the IN, or to allow settlement by using short friction piles.
一方、一般の鉄筋コンクリート造の構築物では。On the other hand, in general reinforced concrete structures.
地下室を有するものが多いことから、全面に重厚な底盤
を構築し、深い支持地盤で構築物の総荷重を支持し、地
中梁の上面に二重スラブを構成することが知られている
。Since many of these buildings have basements, it is known to construct a heavy base over the entire surface, support the total load of the structure with deep supporting soil, and construct a double slab on the top of the underground beam.
［発明が解決しようとする課題］
しかしながら、建築物においては一般に、基礎工事に要
する工費が建設費に占める割合が高く、ことに建設地の
地盤が軟弱である場合には、低層の軽微な建築物におい
てもその対策が大がかりとなって、上記の傾向に対する
課題はとくに水辺地域において大きい。[Problem to be solved by the invention] However, in general, the cost of foundation work for buildings accounts for a high proportion of the construction cost, and especially when the ground of the construction site is soft, it is difficult to construct a low-rise building. Countermeasures against this trend have become large-scale for physical goods, and the challenges to the above trends are particularly large in waterside areas.
その主要なものは、鉄筋コンクリート造の構築物はたと
え低層のものであっても、重量が大きく、一方において
は軟弱地盤が年月を経ると、積載荷重によって徐々に圧
密され、とくに、埋立地のような地域では沈下量が大き
く、シかも不均等に進行することであり、その対策が課
題となっていた。The main reasons are that reinforced concrete structures are heavy, even if they are low-rise, and on the other hand, soft ground gradually becomes compacted over time due to live loads, especially in places such as landfills. The amount of subsidence is large in such areas, and the sinking progresses unevenly, making countermeasures an issue.
［課題を解決するための手段］
本発明は、上述のような課題の解決を図ることを目的と
して開発されたものであって、構築物の基礎の上下の盤
を連結して剛性の高い二重基礎とし、二重基礎内に空室
を形成してこの空間をバラスト材の充填に利用・し、部
分的な対応を可能にすることを要旨としている。そして
本発明は、軟弱地盤上に建設される鉄筋コンクリート造
等の上部構築物の基礎において、構築物の基礎を二重基
礎に構成し、各柱通りの地中梁、それらの中間に設けら
れる小梁を上下に対応させ、二重基礎を壁体によって区
画して剛性を高め、各区画に形成したセルを群に形成し
て、それらの各セルまたは群ごとに、注水、排水可能な
給排水設備を設けてなることを特徴としている。[Means for Solving the Problems] The present invention was developed with the aim of solving the above-mentioned problems. The idea is to create a void within the double foundation and use this space to fill with ballast material, making it possible to partially respond to the problem. The present invention also provides a foundation for an upper structure such as a reinforced concrete structure built on soft ground, in which the foundation of the structure is constructed as a double foundation, and underground beams along each column and small beams installed between them are installed. The double foundation is divided by walls to increase its rigidity, and the cells formed in each division are formed into groups, and each cell or group is equipped with water supply and drainage equipment that can inject and drain water. It is characterized by the fact that
これによって、本発明の軟弱地盤上の低Ｎ構築物は、二
重基礎を有するものでありながら、内部に設けたセル内
にバラストとして水のような容易に得られる液体を利用
し、部分的に構築物の荷重を制御して、長期にわたる軟
弱地盤の圧密と、それに不可避な不等沈下に対応するこ
とができる鉄筋コンクリート造等の低層構築物を提供す
ることに成功したものである。As a result, although the low-N structure on soft ground of the present invention has a double foundation, it utilizes an easily obtained liquid such as water as ballast in the internal cells, and partially The present invention succeeded in providing a low-rise structure made of reinforced concrete that can control the load of the structure and cope with the long-term consolidation of soft ground and the uneven settlement that inevitably occurs.
［実施例］
本発明の軟弱地盤上の低層構築物として、鉄筋コンクリ
ート造の低層建築物の一実施例を図面に基づいて詳細に
説明する。第１図は第２図のＩ−■線に沿った建築物の
平面図、第２図は断面図であって１図中の１は建築物の
全体、２は柱５３は梁、４は地中梁、５は小梁、６は底
盤、７は二重スラブ、８は外壁、９は内壁である。[Example] As a low-rise structure on soft ground according to the present invention, an example of a low-rise building made of reinforced concrete will be described in detail based on the drawings. Figure 1 is a plan view of the building along line I-■ in Figure 2, and Figure 2 is a cross-sectional view, where 1 is the entire building, 2 is the pillar 53, and 4 is the beam. There are underground beams, 5 is a small beam, 6 is a base plate, 7 is a double slab, 8 is an outer wall, and 9 is an inner wall.
建築物１は地盤Ｇの地表近くに厚い底盤６を形成し、柱
２を建て、地中梁４の成を隔てて二重スラブ７を構築し
て二重基礎を形成しである。外周部の地中梁４の上方に
は外壁８を構築し、柱２に梁３を架設して、２〜３Ｎの
低層建築物１を構成しである。The building 1 is constructed by forming a thick base 6 near the surface of the ground G, erecting columns 2, and constructing a double slab 7 across the underground beam 4 to form a double foundation. An outer wall 8 is constructed above the underground beam 4 at the outer periphery, and beams 3 are constructed on the pillars 2 to constitute a low-rise building 1 of 2 to 3N.
本発明の建築物ｌの二重基礎は、軟弱地盤Ｇ上に半地下
式に構築され、地中梁４の位置と、これらの地中梁４の
中間に設けた小梁５の位置に、上下の構造体に剛結合し
て内壁９を設け、底盤６と二重スラブ７の間を多数のセ
ル１０の群に区画しである。各セル１０の内部には、所
定の重量設計に従って、海水等の入手容易な液体を注入
し、壁体９の下部には連通孔１１を開設し１区画形成と
沈下傾斜側への流動阻止のためには閉鎖し、区画相互間
の給排水用には通水させることが可能なように、適宜に
開閉可能にしておく。The double foundation of the building I of the present invention is constructed semi-underground on soft ground G, and the positions of the underground beams 4 and the small beams 5 provided between these underground beams 4 are as follows: An inner wall 9 is provided rigidly connected to the upper and lower structures, and the space between the bottom plate 6 and the double slab 7 is divided into a large number of groups of cells 10. Easily available liquid such as seawater is injected into the inside of each cell 10 according to a predetermined weight design, and a communication hole 11 is provided in the lower part of the wall 9 to form one compartment and prevent the flow toward the sinking slope side. It should be closed for public use, and openable and closed as needed to allow water to flow between compartments.
また、セル１０の１区画または地上の一部には機械室Ｍ
を設けて、各セル１ｏに達する給排水膜１１１２を配設
してあって、各セル１０は各室ごとにまたは群ごとに給
水または排水し、あるいは、連通孔１１を介して群ごと
に行うことができる。In addition, there is a machine room M in one section of the cell 10 or a part of the ground.
A water supply and drainage membrane 1112 is provided to reach each cell 1o, and each cell 10 can be supplied with water or drained separately for each chamber or for each group, or for each group via the communication hole 11. Can be done.
従って、各セル１０の周壁８および９は、壁体自体を防
水コンクリートで形成することとし、好ましくは、外壁
８には外防水を施すものとする。給排水設備１２は連通
孔１１を利用して配設するのがよい。Therefore, the peripheral walls 8 and 9 of each cell 10 are made of waterproof concrete, and preferably the outer wall 8 is waterproofed. The water supply and drainage equipment 12 is preferably installed using the communication hole 11.
［作 用］
本発明を鉄筋コンクリート造の低層建築物の基礎に適用
した場合の作用を、建築物の使用方法について説明する
。建築物１の二重基礎部分は、底′ｌＲ６と二重スラブ
７の間に多数の内壁９を有し、上下に結合されているか
ら、厚い版体としての剛性が大きくて部分変形がなく、
しかも中空のセル１０を含んでいるから、軟弱地盤Ｇの
水位によって浮力を生じ、軽量である。従って、軟弱地
盤Ｇに対して荷重が小さく、しかも均等分布を図った支
持が得られる。[Function] The function when the present invention is applied to the foundation of a low-rise building made of reinforced concrete will be explained with respect to the method of using the building. The double foundation part of the building 1 has a large number of inner walls 9 between the bottom 'lR6 and the double slab 7, which are connected vertically, so that the rigidity of the thick slab is high and there is no partial deformation. ,
In addition, since it includes hollow cells 10, it generates buoyancy depending on the water level of the soft ground G, and is lightweight. Therefore, the load on the soft ground G is small and evenly distributed support can be obtained.
ここで１機械室Ｍに傾斜計１３等の計測設備を装備し、
建築物１の上部構造の荷重１周囲の影響。Here, 1 machine room M is equipped with measurement equipment such as inclinometer 13,
Effect of load 1 surrounding the superstructure of building 1.
および主として支持地盤Ｇの不均一に基づいて生ずる建
築物１の沈下量を計測し、不等沈下の傾向を把握して、
沈下の少ない部分の区画に対して選定されたセル１０内
に、給排水設備１２によって。Then, measure the amount of settlement of the building 1 mainly due to the unevenness of the supporting ground G, understand the tendency of uneven settlement,
By means of water supply and drainage equipment 12 in cells 10 selected for sections with low settlement.
例えば、近傍の海水を利用して、水Ｗを注水し、その付
加の荷重によって圧密荷重を増大して進行させ、また、
沈下の大きい部分ではセル１０内の水Ｗを排水し、圧密
荷重を減少させることによって、建築物全体を均一に沈
下するように制御する。For example, by injecting water W using nearby seawater and increasing the consolidation load by the added load,
In areas where the settlement is large, the water W in the cells 10 is drained to reduce the consolidation load, thereby controlling the entire building to settle uniformly.
また、セル１０内の注水水位は、連通孔１１の作用によ
って、傾斜計に代えて、計測設［１３として利用するこ
とができる。Moreover, the water level in the cell 10 can be used as a measurement device [13] instead of an inclinometer due to the effect of the communication hole 11.
［発明の効果コ
上記のようにして、本発明は、軟弱地盤上に建設される
鉄筋コンクリート造等の上部構築物の基礎において、構
築物の基礎を二重基礎に構成し、各柱通りの地中梁、そ
れらの中間に設けられる小梁を上下に対応させ、二重基
礎を壁体によって区画して剛性を高め、各区画に形成し
たセルを群に形成して、それらの各セルまたは群ごとに
、注水、排水可能な給排水設備を設けたものであるから
、まず、軟弱地盤の基本的耐力に見合うように、鉄筋コ
ンクリート造等の低層構築物を、二重基礎部分に浮力を
有する構成を採用して全体の荷重を減少させてあり、し
かも、この二重基礎は剛性が高く、荷重が均等に分布さ
れて、地盤に対して偏心した荷重が生じない、また、計
測手段によって構築物を支持する地盤の挙動を監視する
ことによって、二重基礎内に構成したセルを給排水設備
によってバラストとして作用させることができるから。[Effects of the Invention] As described above, the present invention provides a foundation for an upper structure such as a reinforced concrete structure constructed on soft ground, in which the foundation of the structure is configured as a double foundation, and underground beams are installed along each column. , the small beams installed between them are made to correspond to the top and bottom, the double foundation is partitioned by walls to increase rigidity, the cells formed in each partition are formed into groups, and each cell or group is Since it is equipped with water supply and drainage equipment that can inject and drain water, firstly, a low-rise structure such as a reinforced concrete structure with a double foundation that has buoyancy is adopted to match the basic bearing capacity of the soft ground. In addition, this double foundation has high rigidity, and the load is evenly distributed so that no eccentric load is generated with respect to the ground. By monitoring the behavior, the cells constructed within the double foundation can be used as ballast by means of water supply and drainage equipment.
軟弱地盤、ことに水辺地域の地盤に、永年にわたって進
行する圧密に対して、適切かつ積極的な対処が可能であ
る。また、バラスト用の貯溜水は、消火用水として利用
を図ることができる。さらに。It is possible to appropriately and proactively deal with the long-term consolidation of soft ground, especially in waterside areas. Furthermore, the water stored for ballast can be used as water for fire extinguishing purposes. moreover.
二重基礎の構築自体には格別な技術、資材等を必要とし
ないばかりでなく、バラストの水等の液体は入手が容易
であり、構築物に対して十分堅固な支持層がどんなに深
くても、杭工事に要する工期が短縮され、その工費も不
要である効果が大きい。Not only does the construction of a double foundation itself not require special techniques or materials, but liquids such as ballast water are easily available, and no matter how deep the supporting layer is, The construction period required for pile construction is shortened and the construction cost is unnecessary, which has a great effect.
さらに、構築物自体による圧密が完了すれば、二重基礎
内のセルの空間は地下室として利用することができるな
ど、十分に所期の目的を達成して、軟弱地盤や水辺地域
での構築物の改善に画期的効果をもたらす発明というべ
きである。Furthermore, once the consolidation by the structure itself is completed, the cell space within the double foundation can be used as a basement, making it possible to fully achieve the intended purpose and improve structures on soft ground or waterside areas. It can be said that this is an invention that has a groundbreaking effect.
【図面の簡単な説明】
図面は本発明を採用して構築した鉄筋コンクリート造の
低層建築物の実施例を示す図面であって、第１図は第２
図のＩ−Ｉ線に沿った建築物の平面図、第２図は断面図
である。
１・・・建築物の全体、２・・・柱、３・・・梁、４・
・・地中梁、５・・・小梁、６・・・底盤、７・・・二
重スラブ、８・・・外壁、９・・・内壁、１０・・・セ
ル、区画、１１・・・連通孔、１２・・・給排水設備、
１３・・・計測設備、傾斜計、Ｍ・・・機械室、Ｗ・・
・貯水、水、Ｇ・・・地盤。
第１図[Brief Description of the Drawings] The drawings are drawings showing an example of a low-rise reinforced concrete building constructed using the present invention.
A plan view of the building taken along line I-I in the figure, and FIG. 2 is a sectional view. 1... Entire building, 2... Columns, 3... Beams, 4.
... Underground beam, 5... Small beam, 6... Bottom plate, 7... Double slab, 8... External wall, 9... Inner wall, 10... Cell, division, 11...・Communication hole, 12... Water supply and drainage equipment,
13...Measuring equipment, inclinometer, M...mechanical room, W...
・Water storage, water, G...ground. Figure 1
Claims (1)
上部構築物の基礎において、構築物の基礎を二重基礎に
構成し、各柱通りの地中梁、それらの中間に設けられる
小梁を上下に対応させ、二重基礎を壁体によって区画し
て剛性を高め、各区画に形成したセルを群に形成して、
それらの各セルまたは群ごとに、注水、排水可能な給排
水設備を設けてなることを特徴とする軟弱地盤上の低層
構築物。(1) For the foundation of an upper structure such as a reinforced concrete structure constructed on soft ground, the foundation of the structure is constructed as a double foundation, and the underground beams along each pillar and the small beams installed between them are placed above and below. The double foundation is divided by walls to increase rigidity, and the cells formed in each division are formed into groups.
A low-rise structure on soft ground, characterized in that each cell or group is provided with water supply and drainage equipment that can inject and drain water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21330288A JPH0261225A (en) | 1988-08-27 | 1988-08-27 | Low-rise construction of weak ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21330288A JPH0261225A (en) | 1988-08-27 | 1988-08-27 | Low-rise construction of weak ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0261225A true JPH0261225A (en) | 1990-03-01 |
Family
ID=16636879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21330288A Pending JPH0261225A (en) | 1988-08-27 | 1988-08-27 | Low-rise construction of weak ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0261225A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0434123A (en) * | 1990-05-31 | 1992-02-05 | Tokyu Constr Co Ltd | Foundation ground control method for building |
| JPH07504732A (en) * | 1992-03-16 | 1995-05-25 | ワーグナー スプレイ テック コーポレーション | Improved pulse width modulation controller for electric motor-driven piston paint pumps |
| JP2002227174A (en) * | 2001-02-01 | 2002-08-14 | Takenaka Komuten Co Ltd | Uneven settlement correcting method for soft bed landing float structure |
| JP2002227175A (en) * | 2001-02-01 | 2002-08-14 | Takenaka Komuten Co Ltd | Uneven settlement correcting method for soft bed landing float structure |
| JP2007014377A (en) * | 2005-07-05 | 2007-01-25 | Universal Shipbuilding Corp | Water supply system for emergency fire pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60506A (en) * | 1983-06-15 | 1985-01-05 | Mitsubishi Electric Corp | Diagnostic device of plant |
-
1988
- 1988-08-27 JP JP21330288A patent/JPH0261225A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60506A (en) * | 1983-06-15 | 1985-01-05 | Mitsubishi Electric Corp | Diagnostic device of plant |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0434123A (en) * | 1990-05-31 | 1992-02-05 | Tokyu Constr Co Ltd | Foundation ground control method for building |
| JPH07504732A (en) * | 1992-03-16 | 1995-05-25 | ワーグナー スプレイ テック コーポレーション | Improved pulse width modulation controller for electric motor-driven piston paint pumps |
| JP2002227174A (en) * | 2001-02-01 | 2002-08-14 | Takenaka Komuten Co Ltd | Uneven settlement correcting method for soft bed landing float structure |
| JP2002227175A (en) * | 2001-02-01 | 2002-08-14 | Takenaka Komuten Co Ltd | Uneven settlement correcting method for soft bed landing float structure |
| JP4676621B2 (en) * | 2001-02-01 | 2011-04-27 | 株式会社竹中工務店 | Method for correcting uneven settlement of soft-floating floating structures |
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| JP2007014377A (en) * | 2005-07-05 | 2007-01-25 | Universal Shipbuilding Corp | Water supply system for emergency fire pump |
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