JPS6319341A - Formation of improved ground - Google Patents
Formation of improved groundInfo
- Publication number
- JPS6319341A JPS6319341A JP16412986A JP16412986A JPS6319341A JP S6319341 A JPS6319341 A JP S6319341A JP 16412986 A JP16412986 A JP 16412986A JP 16412986 A JP16412986 A JP 16412986A JP S6319341 A JPS6319341 A JP S6319341A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- improved ground
- improved
- space
- building
- 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
- 230000015572 biosynthetic process Effects 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 235000012255 calcium oxide Nutrition 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- 239000000701 coagulant Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000004848 polyfunctional curative Substances 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は建築物下に位置する改良地盤に対し、軟弱地盤
等においても、フレキシブル性を与え、クランクの発生
しない改良地盤作成方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for preparing an improved ground located under a building that gives flexibility even in soft ground and prevents the occurrence of cranks.
従来、軟弱地盤に建築物を建てるときには、パイル支持
によって行っていた。しかし、該パイル支持は作業期間
が長期にわたり、またそのコストも高いことからパイル
の代わりに地盤改良方法を採用する傾向にある。しかし
、この地盤改良方法は、土や土砂にセメント系硬化剤を
混合し、板状に硬化させて使用しているため、軟弱地盤
ではとかく不等沈下が発生し、この結果、建築物に傾き
を発生させたり、また改良したその地盤そのものにクラ
ックを与えたりする傾向にある。Traditionally, when building buildings on soft ground, pile support was used. However, since the pile support requires a long period of time and is expensive, there is a tendency to use soil improvement methods instead of piles. However, since this ground improvement method uses a cement-based hardener mixed with soil or earth and hardened into a plate shape, uneven settlement occurs on soft ground, and as a result, buildings tend to lean. It also tends to cause cracks in the improved ground itself.
本発明は、従来のこのような改良地盤方法において、建
築物を不等沈下により、傾斜させたりまた改良地盤その
ものにクラックを発生させないような改良地盤作成方法
を提供せんとするにある。The present invention aims to provide an improved soil preparation method that does not cause buildings to slope due to uneven settlement or cracks to occur in the improved soil itself, in the conventional improved soil methods.
前記本発明の口約を達成するために、本発明は建築物下
の改良地盤を構成する空間に骨格材を配し、硬化剤を混
入した土、土砂等を充填し硬化さ−せてなる改良地盤作
成方法を提供せんとするものであ妬。“
〔作 用〕
本発明は、このように改良地盤に骨格材を配し、ので、
改良地盤作成は従来の地盤作成と同様に除去した土又は
土砂等に硬化剤を混入し、改良地盤の深さに応じて骨格
材を複数層設置して充填硬化させることにより作成する
ことができる。In order to achieve the above-mentioned objectives of the present invention, the present invention arranges a framework material in the space constituting the improved ground under a building, and fills it with soil, earth and sand mixed with a hardening agent and hardens it. I'm jealous because it doesn't try to provide a method for creating improved ground. “[Function] The present invention arranges the framework material on the improved ground in this way, so that
Improving ground preparation can be done in the same way as conventional ground preparation by mixing a hardening agent into the removed soil or earth and sand, installing multiple layers of skeletal material depending on the depth of the improved ground, and filling and hardening it. .
〔実施例〕 −
本発明の詳細を更に図示した実施例にもとづき説明する
。第１図は本発明にかかる改良地盤作成方法を適用した
施工例を示し、図中１が建築物であり、２はこの建築物
１下に形成した改良地盤である。この改良地盤２は第２
図で示す如（、建築しようとする地面に一定の深さで改
良地盤２並びに建築物１の下部を位置づけする為の、空
間３を形成し、該空間３の内部に第１図で示した改良地
盤部分に相当する土又は土砂等を充填して改良地盤２を
作成する。この改良地盤２は、まず第２図で示した改良
地盤作成用空間３の中に前もって、編状鉄筋又はＦＲＰ
製、その他適宜な防サビ処理をされた材料若しくは、そ
の材料が防サビ効果の有する材料で作成した網状の骨格
材−たは適宜骨格としての強度を有する各種線、状材料
を交叉配置した骨格材４を一層または上下に間隔を開け
て多層に設置し、改良地盤２を作成する深さに対応して
セメント、生石灰、セメント系硬化剤、高分子凝固剤等
から選んだ地盤改良用硬化剤を混合した一層又は土砂を
充填して、硬化せしめ六ものである。[Example] - Details of the present invention will be explained based on further illustrated examples. FIG. 1 shows an example of construction to which the improved ground preparation method according to the present invention is applied. In the figure, 1 is a building, and 2 is the improved ground formed under this building 1. This improved ground 2 is the second
As shown in the figure, a space 3 is formed at a certain depth in the ground where the building is to be constructed, in order to position the improved ground 2 and the lower part of the building 1, and inside this space 3, the space 3 shown in Fig. 1 is formed. The improved ground 2 is created by filling soil or earth and sand corresponding to the improved ground part.This improved ground 2 is first made by placing braided reinforcing bars or FRP into the improved ground preparation space 3 shown in Fig. 2.
A net-shaped skeleton made of a material that has undergone appropriate rust-proofing treatment, or a material that has a rust-proofing effect, or a skeleton made of a cross-arrangement of various wires and shaped materials that have appropriate strength as a skeleton. A hardening agent for ground improvement selected from cement, quicklime, a cement-based hardening agent, a polymer coagulant, etc., depending on the depth at which the material 4 is installed in one layer or in multiple layers with spaces between the top and bottom to create the improved ground 2. It is made of a single layer of mixed material or filled with earth and sand and hardened.
このような改良稗盤２を用いることにより、その上部に
設置した建築物１はパイルを用いることなく、建築物の
下部を支持すると同時に、該地面に不等性下等が発生し
改良地盤２に不等ム応力がかかっても、改良地盤２中に
は骨格材４が有ることで、該地盤そのものにクランクが
発生することなく、またその位置を強固に保持すること
から、上部の建築物１の傾きをも防止するものである。By using such an improved gutter board 2, the building 1 installed on top of it can support the lower part of the building without using piles, and at the same time, it can prevent uneven bottoms etc. from occurring on the ground. Even if unequal stress is applied to the improved ground 2, the presence of the framework material 4 in the improved ground 2 prevents the ground itself from cranking and firmly maintains its position. This also prevents the inclination of 1.
第３図以下で示したものは、前記第１図で示した板状の
改良地盤２に対し、改良地盤２下面に単または複数の円
錐又は角錐状突出物５を形成した改良地盤の例を示して
いる。−第３図は複数のぐラミソド型突出物５を下面に
形成した例であり、前記改良地盤作成用空間３の底面に
ピラミッド状突出物５を形成する為の空間５′を作成し
、該ピラミッド状空間５′並びに、そのキ部の改良地盤
を作成する深さの空間に対し、前記骨格材４を第４図の
如く、単または複数層状に配して、硬化剤を混入した土
または土砂等を充填し、硬化させて改良地盤２を得るも
のである。第５図はこのビラきラド状突出物５が１つの
状態であるものを示している。What is shown in Fig. 3 and below is an example of an improved ground in which one or more conical or pyramidal protrusions 5 are formed on the lower surface of the improved ground 2 in contrast to the plate-shaped improved ground 2 shown in Fig. 1. It shows. - Fig. 3 is an example in which a plurality of pyramid-shaped protrusions 5 are formed on the bottom surface, and a space 5' for forming the pyramid-shaped protrusions 5 is created on the bottom surface of the improved ground preparation space 3. As shown in FIG. 4, the framework material 4 is arranged in single or multiple layers in the pyramid-shaped space 5' and the space deep enough to create the improved ground at the corner of the space, and is filled with soil mixed with a hardening agent or The improved ground 2 is obtained by filling with earth and sand and hardening it. FIG. 5 shows a state in which the rad-like protrusion 5 is in one state.
その作成方法並びに過程は前記のものと同様である。従
って、このようなピラミッド状突出物５を改良地盤２の
下面に形成しておくことにより、軟弱地盤に本改良地盤
を使用した場合において、該改良地盤２は横方向に移動
しようとするときに、横方向、即ち水平変動を抑制する
効果がある上に、上方からの荷重即ち建築物の荷重に対
し、地盤の支持面積が多くなり、前記水平変動の防止と
ともに、垂直沈降を、も防止し〜改良地盤２として一定
の位置において建築物を支持する特性を発揮するもので
ある。The preparation method and process are the same as those described above. Therefore, by forming such a pyramid-shaped protrusion 5 on the lower surface of the improved ground 2, when this improved ground is used on soft ground, the improved ground 2 is prevented from moving laterally. In addition to having the effect of suppressing lateral movement, that is, horizontal movement, the supporting area of the ground increases against the load from above, that is, the load of the building, and prevents not only horizontal movement but also vertical settlement. - It exhibits the property of supporting a building at a certain position as the improved ground 2.
以上の如く、本発明にかかる改良地盤作成方法は建築物
下の構成す夛空間に骨格材を配し、硬化剤を混入した土
、土砂等を卑填硬化させてなるものであるから、軟弱地
盤に本改良地盤を作成しても、不等性下等に際し、該改
良地盤が破損したり、または変位したりするともなく、
支持してなる建築物を初期の位置で保持し、傾けること
がないのである：As described above, the improved ground preparation method according to the present invention places a framework material in the space under the building and hardens soil, soil, etc. mixed with a hardening agent. Even if this improved ground is created on the ground, the improved ground will not be damaged or displaced due to unevenness, etc.
It keeps the supporting structure in its initial position and does not tilt:
第１図は本発明にかかる改良地盤作成方法を適用した建
築物設置状態の建築物、並びにその地盤の断面図、第２
図は改良地盤をイｙ成するための地盤へ形成した空間断
面説明図、第３図は他の改良地盤を作成する為の地盤作
成用空間断面説明図、第４図は他の改良地盤を設けた状
態の地盤断面説明図、第５図は更に他の改良地盤を実施
した状態の断面説明図である。
１：建築物、 ２：改良地盤、３：空間、
４：骨格材、
５：突出物、 ５′：空間。Fig. 1 is a cross-sectional view of a building installed in a building to which the improved ground preparation method according to the present invention is applied, and the ground;
The figure is an explanatory diagram of a spatial cross section formed on the ground to create an improved ground, Figure 3 is an explanatory diagram of a spatial cross section for creating the ground to create another improved ground, and Figure 4 is an explanatory diagram of a spatial cross section formed on the ground to create an improved ground. FIG. 5 is an explanatory diagram of a cross section of the ground in a state in which it has been provided, and FIG. 1: Building, 2: Improved ground, 3: Space,
4: Skeletal material, 5: Projection, 5': Space.
Claims (1)
、硬化剤を混入した土、土砂等を充填し硬化させてなる
改良地盤作成方法。 ２）骨格材として網状鉄筋を用いてなる特許請求の範囲
第１項記載の改良地盤作成方法。 ３）硬化剤としてセメント、生石灰、セメント系硬化剤
、高分子系凝固剤等の地盤改良用硬化剤を用いてなる特
許請求の範囲第１項記載の改良地盤作成方法。 ４）改良地盤下面が円錐又は角錐状突出物の単独のもの
又は集合したものである特許請求の範囲第１項記載の改
良地盤作成方法。[Scope of Claims] 1) A method for creating an improved ground by placing a skeleton material in the space constituting the improved ground under a building, filling it with soil, earth and sand mixed with a hardening agent, and hardening the space. 2) The improved ground preparation method according to claim 1, which uses reticulated reinforcing bars as the framework material. 3) The improved soil preparation method according to claim 1, which uses a hardening agent for ground improvement such as cement, quicklime, a cement-based hardening agent, or a polymer-based coagulant as a hardening agent. 4) The improved ground preparation method according to claim 1, wherein the lower surface of the improved ground is a conical or pyramidal protrusion, either singly or in a group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16412986A JPS6319341A (en) | 1986-07-12 | 1986-07-12 | Formation of improved ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16412986A JPS6319341A (en) | 1986-07-12 | 1986-07-12 | Formation of improved ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6319341A true JPS6319341A (en) | 1988-01-27 |
Family
ID=15787300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16412986A Pending JPS6319341A (en) | 1986-07-12 | 1986-07-12 | Formation of improved ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319341A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453838U (en) * | 1990-09-11 | 1992-05-08 | ||
| JP2010001718A (en) * | 2008-06-19 | 2010-01-07 | Kunio Okada | Shallow ground improving method |
| JP2010144371A (en) * | 2008-12-17 | 2010-07-01 | System Keisoku Kk | Foundation structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509214A (en) * | 1973-05-31 | 1975-01-30 | ||
| JPS5245120A (en) * | 1975-10-07 | 1977-04-09 | Iwami Kaihatsu Kk | Method of improving poor subsoil |
| JPS61122328A (en) * | 1984-11-16 | 1986-06-10 | Maikoma Seven:Kk | Method of installing top-shaped block |
-
1986
- 1986-07-12 JP JP16412986A patent/JPS6319341A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509214A (en) * | 1973-05-31 | 1975-01-30 | ||
| JPS5245120A (en) * | 1975-10-07 | 1977-04-09 | Iwami Kaihatsu Kk | Method of improving poor subsoil |
| JPS61122328A (en) * | 1984-11-16 | 1986-06-10 | Maikoma Seven:Kk | Method of installing top-shaped block |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453838U (en) * | 1990-09-11 | 1992-05-08 | ||
| JP2010001718A (en) * | 2008-06-19 | 2010-01-07 | Kunio Okada | Shallow ground improving method |
| JP2010144371A (en) * | 2008-12-17 | 2010-07-01 | System Keisoku Kk | Foundation structure |
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