JPS6363816A - Improving work of surface soil of ground for building - Google Patents

Improving work of surface soil of ground for building

Info

Publication number
JPS6363816A
JPS6363816A JP20753686A JP20753686A JPS6363816A JP S6363816 A JPS6363816 A JP S6363816A JP 20753686 A JP20753686 A JP 20753686A JP 20753686 A JP20753686 A JP 20753686A JP S6363816 A JPS6363816 A JP S6363816A
Authority
JP
Japan
Prior art keywords
ground
excavated
soil
building
foundation
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
Application number
JP20753686A
Other languages
Japanese (ja)
Other versions
JPH0639780B2 (en
Inventor
Takahiro Yugawa
湯川 宝裕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui House Ltd
Original Assignee
Sekisui House Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekisui House Ltd filed Critical Sekisui House Ltd
Priority to JP61207536A priority Critical patent/JPH0639780B2/en
Publication of JPS6363816A publication Critical patent/JPS6363816A/en
Publication of JPH0639780B2 publication Critical patent/JPH0639780B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the cost of construction work by improving only the ground where foundation is formed. CONSTITUTION:The ground where foundation is to be formed is excavated to an adequate depth, and the excavated soil 9 is mixed with a solidifying agent 11 with stirring and temporarily compacted for level regulation. The soil is then completely compacted to form the ground for building. The amount of solidifying agent to be used can thus be reduced and the construction period can also be shortened.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、軟弱地盤に起因する軽量建物の不等沈下また
はコンクリート基礎の破壊防止を目的とする建物用表土
改良工法に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a building topsoil improvement method for preventing uneven settlement of lightweight buildings or destruction of concrete foundations due to soft ground.

(従来の技術) 軟弱地盤上に住宅等の建物を築造する場合、この軟弱地
盤に固化材を添加すること等により予め地盤を改良し、
軟弱地盤に起因する軽量建物の不等沈下またはコンクリ
ート基礎の破壊を防止していた。そして、従来、地盤の
改良は、建物が建てられる敷地全範囲を対象として行わ
れていた。
(Prior art) When constructing a building such as a house on soft ground, the ground is improved in advance by adding a solidifying material to the soft ground, etc.
This prevented uneven settlement of lightweight buildings or destruction of concrete foundations due to soft ground. Conventionally, ground improvement has been carried out over the entire site on which a building is to be built.

(発明が解決しようとする問題点) しかしながら、軽量建物の不等沈下またはコンクリート
基礎の破壊を防止するために地盤の強度が必要な所は基
礎が配置される所であり、他の位置については必ずしも
固化材を添加する等の大がかりな地盤改良が必要でない
。よって、従来のように敷地全範囲にわたって地盤の改
良を行うと、固化材等の材料が多(いるとともに、施工
時間がかかるため施工コストが高くなるという問題があ
った。
(Problem to be Solved by the Invention) However, in order to prevent uneven settlement of lightweight buildings or destruction of concrete foundations, the strength of the ground is required only where the foundation is placed; Large-scale ground improvement such as adding solidification material is not necessarily necessary. Therefore, if the ground is improved over the entire area of the site as in the past, there is a problem in that it requires a large amount of materials such as solidifying materials, and the construction cost increases due to the long construction time.

(問題点を解決するための手段) 本発明の建物用地盤表土改良工法は、改良を目的とする
現状地盤において、基礎が敷設される所のみを適当な深
さに掘削し、この掘削した堀削土に固化材を散布して両
者を攪拌した後に仮転圧を行って、堀削土と固化材とが
攪拌された混合土と現状地盤とのレベル調整を行った後
、本転圧を行うことにより建築用地盤を構成するもので
ある。
(Means for Solving Problems) The method for improving ground and topsoil for buildings of the present invention involves excavating only the area where the foundation is to be laid to an appropriate depth in the existing ground for the purpose of improvement, and then using the excavated trench. After spreading the solidification material on the excavated soil and stirring both, preliminary compaction is performed to adjust the level between the mixed soil in which the excavated soil and solidification material have been stirred and the current ground, and then the main compaction is carried out. By doing so, the ground for construction is constructed.

(作用) 改良を目的とする現状地盤の基礎が配置される所のみを
改良し、この地盤上に住宅等の建物を築造可能にする。
(Operation) To improve only the part of the current ground where the foundation will be placed for the purpose of improvement, and to make it possible to construct houses and other buildings on this ground.

(実施例) 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第1図乃至第8図は建物用地盤の改良を行う工程を示し
、図中同じ物には同符号を付している。
1 to 8 show the process of improving the ground for buildings, and the same parts in the figures are given the same reference numerals.

まず、第1図に示すように、基礎が敷設される部分を地
縄、白線2等によって現状地盤1上に明示する。この明
示した部分が現状地盤1の改良を行う改良部分3となる
。また、改良部分3の改良幅3aは基礎の幅よりも広く
なるように余裕を持たせて設定するのが好ましい。図中
の符号5は遣方であって、この遣方5は改良幅3a等を
考慮し、建物が建てられる位置から通常よりも離して設
けられている。この遣方5は、改良部分30ベース底7
の上にコンクリート基礎を形成するとき、コンクリート
基礎のセンター合わせをしたりする水系を張りわたすた
めのものである。
First, as shown in Figure 1, the area where the foundation will be laid is clearly marked on the current ground 1 using ground ropes, white lines 2, etc. This clearly defined area will be the improved area 3 where the current ground 1 will be improved. Further, it is preferable that the improved width 3a of the improved portion 3 is set to be wider than the width of the foundation. The reference numeral 5 in the figure is a construction, and this construction 5 is provided at a distance from the position where the building is to be constructed, taking into account the improvement width 3a and the like. This method 5 is the improved part 30 base bottom 7
When a concrete foundation is formed on top of the concrete foundation, it is used to align the center of the concrete foundation and to span the water system.

次に、第2図および第3図に示すように、掘削機6によ
って改良部分3を基礎が設けられる深さいわゆるベース
底7まで掘削する。その後、レベル測定具8等を用いて
レベル測定を行い、堀削深さの確認をする。図中の符号
9は掘削機6によって現状地盤1上に積まれた堀削土で
ある。
Next, as shown in FIGS. 2 and 3, the improved part 3 is excavated by an excavator 6 to the depth at which the foundation is to be provided, the so-called base bottom 7. Thereafter, the level is measured using a level measuring tool 8 or the like to confirm the excavation depth. Reference numeral 9 in the figure indicates excavated soil piled on the current ground 1 by the excavator 6.

さらに、ベース底7を掘削機6によって改良幅3aを維
持して堀削する。ここで堀削された深さは改良厚3bと
なる。この改良厚3bをレベル測定具8等を用いて確認
した後、これら掘削された堀削土9がベース底7の高さ
と略等しい高さまで充填された堀削土10に地盤安定処
理剤、セメント等の固化十111を添加する(第4図参
照)。
Furthermore, the base bottom 7 is excavated by the excavator 6 while maintaining the improved width 3a. The depth excavated here is the improved thickness 3b. After confirming this improved thickness 3b using a level measuring tool 8 or the like, the excavated excavated soil 9 is filled into the excavated soil 10 to a height approximately equal to the height of the base bottom 7, and a ground stabilizing agent and cement are added to the excavated excavated soil 9. (See Figure 4).

そして、これら堀削土10と固化材11とを十分に混合
攪拌した後、この攪拌されてなる混合土12を、例えば
前記掘削機6の掘削バケソ)6a等によって仮転圧する
(第5図参照)、なお、堀削土10と固化材11とを混
合攪拌するとき、必要に応じて水を適量散布する。
After thoroughly mixing and stirring the excavated soil 10 and the solidifying material 11, the mixed soil 12 thus stirred is temporarily compacted by, for example, the excavator 6a of the excavator 6 (see FIG. 5). ), when mixing and stirring the excavated soil 10 and the solidification material 11, an appropriate amount of water is sprinkled as necessary.

仮転圧が終了後、混合±12と現状地盤lとのレベルを
測定し、レベル差が大きい所もしくは混合ムラがある所
などは作業者によって修正する(第6図参照)。
After the preliminary compaction is completed, the level between the mixture ±12 and the current ground level 1 is measured, and areas where there is a large level difference or where there is uneven mixing are corrected by the operator (see Figure 6).

さらに、この混合土12をラン713、ローラ14等に
よって本転圧を行う(第7図および第8図参照)。
Further, this mixed soil 12 is subjected to main compaction using a run 713, rollers 14, etc. (see FIGS. 7 and 8).

転圧終了後レベルの再確認をし、水を散布して含水比を
調整する。この水の散布は、固化材11が100kg/
m以上混合されていれば必要がない。
After compaction is completed, recheck the level and adjust the water content ratio by spraying water. The solidifying material 11 is 100kg/spraying of this water.
It is not necessary if m or more are mixed.

そして、適当な養生期間をとることにより地盤の改良は
完了する。
After a suitable curing period, the ground improvement is completed.

上記のように改良した地盤上に基礎を敷設する。The foundation will be laid on the ground that has been improved as described above.

(発明の効果) 以上述べたように、本発明の建物用地盤表土改良工法に
よれば、基礎を配置する所のみ地盤改良を行うため、従
来に比べ同化材等の材料の使用量を減少できるとともに
、施工時間を短縮することができ、施工コストの低減化
を図ることができる。
(Effects of the invention) As described above, according to the ground and topsoil improvement method for buildings of the present invention, the ground is improved only where the foundation will be placed, so the amount of materials used such as assimilated materials can be reduced compared to the conventional method. At the same time, construction time can be shortened and construction costs can be reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図乃至第8図は本発明の建物用地盤表土改良工法を
示す工程図である。
FIGS. 1 to 8 are process charts showing the ground surface soil improvement method for buildings according to the present invention.

Claims (1)

【特許請求の範囲】[Claims] 1)改良を目的とする現状地盤において、基礎が敷設さ
れる所のみを適当な深さに掘削し、この掘削した堀削土
に固化材を散布して両者を攪拌した後に仮転圧を行って
、堀削土と固化材とが攪拌された混合土と現状地盤との
レベル調整を行った後、本転圧を行うことにより建築用
地盤を構成することを特徴とする建物用地盤表土改良工
法。
1) In the current ground for the purpose of improvement, excavate to an appropriate depth only where the foundation will be laid, sprinkle solidification material on the excavated excavated soil, stir both, and then perform temporary compaction. A ground surface soil improvement for a building, characterized in that, after adjusting the level of the mixed soil in which excavated soil and a solidification material are stirred and the current ground, the ground for construction is formed by performing main compaction. Construction method.
JP61207536A 1986-09-03 1986-09-03 Ground improvement method for buildings Expired - Fee Related JPH0639780B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61207536A JPH0639780B2 (en) 1986-09-03 1986-09-03 Ground improvement method for buildings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61207536A JPH0639780B2 (en) 1986-09-03 1986-09-03 Ground improvement method for buildings

Publications (2)

Publication Number Publication Date
JPS6363816A true JPS6363816A (en) 1988-03-22
JPH0639780B2 JPH0639780B2 (en) 1994-05-25

Family

ID=16541351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61207536A Expired - Fee Related JPH0639780B2 (en) 1986-09-03 1986-09-03 Ground improvement method for buildings

Country Status (1)

Country Link
JP (1) JPH0639780B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05256511A (en) * 1992-03-11 1993-10-05 Rinnai Corp Hot water feeder
JPH06313314A (en) * 1993-04-30 1994-11-08 Tone Chika Gijutsu Kk Foundation ground improving construction method for low storied building
JP2008115617A (en) * 2006-11-06 2008-05-22 Wasc Kiso Jiban Kenkyusho:Kk Quality confirmation method for improved ground and quality confirmation instrument
JP2008231827A (en) * 2007-03-22 2008-10-02 Kajima Corp Reinforced concrete block wall body and its construction method
JP2010024698A (en) * 2008-07-18 2010-02-04 Toyo Sutabi:Kk Bucket with rolling plate for improving intermediate ground

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5496207A (en) * 1978-01-14 1979-07-30 Sekisui House Kk Method of improving surface soil of ground for building
JPS59106627A (en) * 1982-12-08 1984-06-20 Misawa Homes Co Ltd Construction work of foundation structure
JPS59187921A (en) * 1983-04-11 1984-10-25 Chiyoda Kenki Kk Improvement work of ground for low story housing and machine therefor
JPS6037324A (en) * 1983-08-08 1985-02-26 Hidesuke Ito Ground improvement work
JPS60230423A (en) * 1984-04-27 1985-11-15 Natl House Ind Co Ltd Ground improving method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5496207A (en) * 1978-01-14 1979-07-30 Sekisui House Kk Method of improving surface soil of ground for building
JPS59106627A (en) * 1982-12-08 1984-06-20 Misawa Homes Co Ltd Construction work of foundation structure
JPS59187921A (en) * 1983-04-11 1984-10-25 Chiyoda Kenki Kk Improvement work of ground for low story housing and machine therefor
JPS6037324A (en) * 1983-08-08 1985-02-26 Hidesuke Ito Ground improvement work
JPS60230423A (en) * 1984-04-27 1985-11-15 Natl House Ind Co Ltd Ground improving method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05256511A (en) * 1992-03-11 1993-10-05 Rinnai Corp Hot water feeder
JPH06313314A (en) * 1993-04-30 1994-11-08 Tone Chika Gijutsu Kk Foundation ground improving construction method for low storied building
JP2008115617A (en) * 2006-11-06 2008-05-22 Wasc Kiso Jiban Kenkyusho:Kk Quality confirmation method for improved ground and quality confirmation instrument
JP2008231827A (en) * 2007-03-22 2008-10-02 Kajima Corp Reinforced concrete block wall body and its construction method
JP2010024698A (en) * 2008-07-18 2010-02-04 Toyo Sutabi:Kk Bucket with rolling plate for improving intermediate ground

Also Published As

Publication number Publication date
JPH0639780B2 (en) 1994-05-25

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