JPS63156124A - Construction of basement - Google Patents
Construction of basementInfo
- Publication number
- JPS63156124A JPS63156124A JP61301475A JP30147586A JPS63156124A JP S63156124 A JPS63156124 A JP S63156124A JP 61301475 A JP61301475 A JP 61301475A JP 30147586 A JP30147586 A JP 30147586A JP S63156124 A JPS63156124 A JP S63156124A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- basement
- section
- foundation
- space
- 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 description 2
- 239000002689 soil Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 abstract description 8
- 239000004848 polyfunctional curative Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Residential Or Office Buildings (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は地下室の構築方法、より詳しくは既設の建造物
に支障を来すことなく、その地下に部屋を形成するよう
にした地下室の構築方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for constructing a basement, and more specifically, a method for constructing a basement in which a room is formed underground without interfering with an existing building. It is about the method.
一般に家屋等の建造物において、居室又は倉庫として地
下室を構築する場合は、あらかじめ地中を掘削し、建造
物の基礎と同時に地下室を形成し、そして上部建造物を
構築するという方法が採られている。Generally, when constructing a basement as a living room or storage in a building such as a house, the method used is to excavate the underground in advance, form the basement at the same time as the foundation of the building, and then construct the upper structure. There is.
ところで、近来既存建造物の増改築が盛んになり、その
場合、土地の有効利用及び日照権等の問題から地下室を
構築することが要望されている。Incidentally, in recent years, extensions and renovations of existing buildings have become popular, and in such cases, it is desired to construct basements in view of issues such as effective land use and sunlight rights.
しかしながら、既存建造物に地下室を構築する場合、該
既存建造物の基礎等を弱くしたり、変形させたりして悪
影響を与える場合が多く、そのため、地下室の構築は殆
んど実施されていない状況にある。However, when constructing a basement in an existing building, it often weakens or deforms the foundation of the existing building and has a negative impact, and for this reason, construction of basements is rarely implemented. It is in.
本発明は前記したような従来の問題点を解決するために
なされたものであって、その目的は、既存の建造物に支
障を来すことなく、この建造物の下に地下室を構築する
ようにした点にある。The present invention was made in order to solve the above-mentioned conventional problems, and its purpose is to construct a basement under an existing structure without disturbing the existing structure. That's what I did.
本発明は前記目的を達成するために、既存建造物の基礎
近傍に中空パイルを打設する工程と、前記パイルから地
中にセメントモルタル等の地盤硬化剤を注入固化して強
化区画を形成する工程と、前記強化区画内を排土して区
画空間を形成する工程と、前記区画空間の周囲及び底面
に壁体を敷設する工程とからなる地下室の構築方法を提
供せんとするものである。In order to achieve the above object, the present invention includes a step of driving a hollow pile near the foundation of an existing building, and injecting and hardening a ground hardening agent such as cement mortar into the ground from the pile to form a reinforced section. The purpose of the present invention is to provide a method for constructing a basement, which comprises the steps of: forming a partitioned space by removing soil from within the reinforced compartment; and constructing walls around and around the bottom of the partitioned space.
即ち本発明は、既設の建造物の床下に地盤硬化剤を注入
して改良地盤で囲まれた強化区画を形成してこれを土止
めとなし、この強化区画内を排出することによって地下
室となる区画空間を形成し、そしてこの区画空間の壁面
に平板状部材ないしはパネル敷設するものである。That is, in the present invention, a soil hardening agent is injected under the floor of an existing building to form a reinforced section surrounded by improved soil, which is used as an earth stop, and by draining the inside of this reinforced section, it becomes a basement. A partitioned space is formed, and a flat plate-like member or panel is laid on the wall surface of this partitioned space.
基礎の近傍に打設する中空パイルはモルタルや石膏ある
いは合成樹脂等の地盤硬化剤を地盤中に噴射するための
ものである。従ってこの中空パイルには多数の小孔が設
けられており、この小孔より地盤硬化剤を高圧力で噴射
するものである。好ましい態様においては、中空パイル
の周囲の地盤を攪拌羽根等により若干軟化させた状態で
地盤硬化剤を噴射することができる。Hollow piles placed near the foundation are used to inject a soil hardening agent such as mortar, gypsum, or synthetic resin into the ground. Therefore, this hollow pile is provided with a large number of small holes through which the soil hardening agent is injected under high pressure. In a preferred embodiment, the ground hardening agent can be injected while the ground around the hollow pile is slightly softened using stirring blades or the like.
中空パイルを打設する間隔としては、地盤硬化剤によっ
て強化された地盤が十分な土止めの役目をすることがで
きる間隔を設定する。この中空パイルは一列に配列され
ている場合が多いが、千鳥形に配列することもできる。The intervals at which the hollow piles are driven are set so that the ground strengthened with a soil hardening agent can act as a sufficient earth retainer. These hollow piles are often arranged in a single row, but they can also be arranged in a staggered pattern.
また、地盤の弱い所には特に密に配列するのが良い。It is also best to arrange them closely, especially in areas where the ground is weak.
更に、中空パイルは全数が同一径を有するものを必ずし
も必要とするものではなく、特に地盤の弱い部分に太い
ものを使用することもできる。Furthermore, it is not necessarily necessary that all the hollow piles have the same diameter, and thicker piles may be used especially in weak areas of the ground.
中空パイルの打設は、回転と押圧作用を与える形式のも
の、振動を利用して押し込む形式のもの、ドリル式に先
導する穴を明けながら押し込むもの等を使用することが
できる。For the installation of hollow piles, methods such as those that apply rotation and pressing action, those that use vibration to push in, and those that push in while drilling a leading hole can be used.
地盤硬化剤ないしは地盤改良剤は、地盤中に簡単に混合
してこれを硬化ないしは強化する作用を有するものであ
れば良く、通常はモルタル、硬化性の接着剤、石膏、水
ガラス等を使用することができる。The soil hardening agent or soil improvement agent may be anything that can be easily mixed into the ground and has the effect of hardening or strengthening it, and usually mortar, hardening adhesive, plaster, water glass, etc. are used. be able to.
また、中空パイルの打設位置は、土止め作用を必要とす
る部分であって、通常は基礎の内側であるが、外側であ
っても良い。Further, the hollow pile is placed in a part that requires earth retaining action, and is usually inside the foundation, but it may be outside.
以下第１図ないし第１０図に基づき本発明による地下室
の構築方法の一実施例を説明する。An embodiment of the method for constructing a basement according to the present invention will be described below with reference to FIGS. 1 to 10.
第１図において１は既存の建造物であって、地盤２に埋
設された基礎３上に建造されている。In FIG. 1, 1 is an existing building, which is built on a foundation 3 buried in the ground 2.
この既存の建造物１の下にはあらかじめ地下室４を構築
するため基礎３の近傍に地盤硬化剤を噴射するための孔
を明けたパイプからなる中空パイル５をある間隔をもっ
て打設するが、特に第２図に示すように地下室４を囲繞
するように間隔ｌを置いて多数本の中空パイル５が打設
される。Under this existing building 1, in order to construct a basement 4 in advance, hollow piles 5 consisting of pipes with holes for injecting a soil hardening agent are placed near the foundation 3 at certain intervals. As shown in FIG. 2, a large number of hollow piles 5 are placed at intervals l so as to surround the basement 4.
この中空パイル５は第３図及び第４図に示すように床板
６に穴７ （可能な限り小さい穴）を設け、この穴７か
ら地盤２中にハンマーあるいは打ち込み装置で打設する
。実際にはこの中空パイル５は径が１５〜２０１１程度
で長さ１００ｃｍでかつ周囲に多数の小孔８を有する単
位パイプを複数本連結して使用される。As shown in FIGS. 3 and 4, this hollow pile 5 is drilled into the ground 2 through a hole 7 (as small as possible) in the floor plate 6 using a hammer or a driving device. In reality, this hollow pile 5 is used by connecting a plurality of unit pipes each having a diameter of about 15 to 2011 mm, a length of 100 cm, and a large number of small holes 8 around the periphery.
このようにして地盤２中に打設された中空パイル５には
セメント注入車９から高圧ホース１０を介してモルタル
等の地盤硬化剤が圧入され、このモルタルは中空パイル
５の小孔８から地盤２中に噴出し、第１図に示すように
モルタルで硬化された改良地盤２゛に囲まれた強化区画
１１を形成して土止め及び止水作用をなす。A ground hardening agent such as mortar is injected into the hollow pile 5 cast into the ground 2 in this manner from a cement injection vehicle 9 via a high-pressure hose 10, and this mortar is poured into the ground through the small hole 8 of the hollow pile 5. As shown in Fig. 1, the reinforced section 11 surrounded by the improved ground 2'' hardened with mortar is formed to act as an earth retainer and water stopper.
そして、この強化区画ｌｌ内の地盤２を掘削排出するの
である。この排土の方法としては種々考えられるが、例
えば第５図に示されるように先ず竪穴１２を掘り、この
竪穴１２内にベルトコンベヤの如き排土装置１３を配置
し、然る後給水管１４から高圧水を噴射させ土砂をスラ
リー状にして排土装置１３から排土することができる。Then, the ground 2 within this reinforced section 11 is excavated and discharged. Various methods can be considered for this soil removal, but for example, as shown in FIG. The earth and sand can be made into a slurry by injecting high-pressure water from the soil removal device 13 and discharged from the earth removal device 13.
勿論人力による排土、又は小型のショベルローダ等を用
いて排土することもできる。Of course, the earth can be removed manually or by using a small shovel loader or the like.
このようにして地下室４を形成する区画空間が形成され
た後、第６図に示されるように、あらかじめ鋼板等の強
度部材により形成された平板状体からなるユニッ１−１
５を区画周囲１６及び区画底面１７に取付け、その各ユ
ニット１５の目地１８に防水セメント等の防水剤を注入
するとともに、第７図に示すようにその裏において改良
地盤２′にアンカー１９が打設され壁面が形成されるの
である。After the partitioned space forming the basement 4 is formed in this way, as shown in FIG.
5 is attached to the perimeter 16 of the compartment and the bottom surface 17 of the compartment, and a waterproofing agent such as waterproof cement is injected into the joints 18 of each unit 15, and an anchor 19 is driven into the improved ground 2' on the back side as shown in Fig. 7. A wall surface is formed.
実際の建造物においては建造物の周囲のばか第８図に示
されるように内部にも基礎３′が設けられている場合が
多いが、この基礎３′の下に地下室４を構築する場合、
第９図及び第１０図に示されるようにあらかじめ基礎３
′の両側に鋼製補強部材２０をボルト２１で取付は梁材
として構成したのち強化区画１１内の排土を行なう。な
お、この場合、鋼製補強部材１８の両端を地盤２に支持
された基礎３まで延在させて梁材として構成される。In actual buildings, a foundation 3' is often provided inside the building as shown in Figure 8, but when constructing a basement 4 under this foundation 3',
As shown in Figures 9 and 10, the foundation 3
Steel reinforcing members 20 are attached to both sides of the reinforcing section 11 with bolts 21 and constructed as beam members, and then the earth in the reinforcing section 11 is removed. In this case, both ends of the steel reinforcing member 18 are extended to the foundation 3 supported by the ground 2 to form a beam member.
以上の説明から明らかなように、本発明による地下室の
構築方法によれば、あらかじめ地下室を構築する区画の
外周にモルタル等の地盤硬化剤を注入して固化して土止
め及び止水を行なったのち、この強化区画内を排土して
区画空間を作り、この区画空間の周囲及び底面に壁体を
敷設するようにしたため、既存構造物に傾き又は破損等
の悪影響を与えることなく、しかも容易に地下室を構築
できるという効果がある。As is clear from the above explanation, according to the method of constructing a basement according to the present invention, a ground hardening agent such as mortar is injected in advance around the outer periphery of the section where the basement is to be constructed and solidified to prevent earth and water. Later, earth was removed from inside this reinforced section to create a sectioned space, and walls were laid around the perimeter and bottom of this sectioned space, so it was easy to do so without causing any adverse effects such as tilting or damage to the existing structure. This has the effect of allowing you to build a basement.
図は本発明による地°下室の構築方法の実施例を示すも
のであって、第１図は側面図、第２図はパイプ打設の説
明図、第３図は第１図のＡ部拡大図、第４図は第３図の
Ｂ部拡大図である。
第５図は地下室の排土方法の説明図、第６図及び第７図
は壁体の敷設方法説明図である。
第８図ないし第１０図は基礎を梁材として利用する場合
の説明図で、第８図は地下室と基礎との関係説明図、第
９図は基礎の傾視図、第１０図は第９図のＣ−Ｃ断面図
である。
１・・・建造物、２・・・地盤、２′・・・改良地盤、
３・・・基礎、４・・・地下室、５・・・中空パイル、
６・・・床板、７・・・穴、８・・・小孔、９・・・地
盤強化割注入車、１０・・・高圧ホース、ＩＩ・・・強
化区画、１２・・・竪穴、Ｉ３・・・排土装置、１４・
・・給水管、１５・・・ユニット、１６・・・区画周囲
、１７・・・区画底面、１８・・・目地、１９・・・ア
ンカー、２０・・・鋼製補強部材、２１・・・ボルト。The figures show an embodiment of the method for constructing a basement according to the present invention, in which Figure 1 is a side view, Figure 2 is an explanatory diagram of pipe installation, and Figure 3 is part A of Figure 1. The enlarged view, FIG. 4, is an enlarged view of part B in FIG. FIG. 5 is an explanatory diagram of a method for removing earth from a basement, and FIGS. 6 and 7 are explanatory diagrams of a method for laying walls. Figures 8 to 10 are explanatory diagrams when the foundation is used as a beam material, Figure 8 is an explanatory diagram of the relationship between the basement and the foundation, Figure 9 is a perspective view of the foundation, and Figure 10 is the It is a CC sectional view of the figure. 1... Building, 2... Ground, 2'... Improved ground,
3... Foundation, 4... Basement, 5... Hollow pile,
6... Floor plate, 7... Hole, 8... Small hole, 9... Ground reinforcement split injection vehicle, 10... High pressure hose, II... Reinforced section, 12... Vertical hole, I3 ...Earth removal equipment, 14.
... Water supply pipe, 15 ... Unit, 16 ... Compartment periphery, 17 ... Compartment bottom, 18 ... Joint, 19 ... Anchor, 20 ... Steel reinforcing member, 21 ... bolt.
Claims (1)
パイルから地中に地盤硬化剤を注入固化して強化区画を
形成し、前記強化区画内を排土して区画空間を形成し、
前記区画空間の周囲及び底面に壁体を敷設することを特
徴とする地下室の構築方法。Driving a hollow pile near the foundation of an existing building, injecting and solidifying a soil hardening agent into the ground from the hollow pile to form a reinforced section, and removing earth from within the reinforced section to form a section space,
A method of constructing a basement, comprising laying walls around the periphery and bottom of the divided space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61301475A JPS63156124A (en) | 1986-12-19 | 1986-12-19 | Construction of basement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61301475A JPS63156124A (en) | 1986-12-19 | 1986-12-19 | Construction of basement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63156124A true JPS63156124A (en) | 1988-06-29 |
Family
ID=17897345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61301475A Pending JPS63156124A (en) | 1986-12-19 | 1986-12-19 | Construction of basement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63156124A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020007817A (en) * | 2018-07-10 | 2020-01-16 | 鹿島建設株式会社 | Forming method of underground space, and repairing method of underground installation |
-
1986
- 1986-12-19 JP JP61301475A patent/JPS63156124A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020007817A (en) * | 2018-07-10 | 2020-01-16 | 鹿島建設株式会社 | Forming method of underground space, and repairing method of underground installation |
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