JPS62288269A - Method for extending underground stair of building - Google Patents
Method for extending underground stair of buildingInfo
- Publication number
- JPS62288269A JPS62288269A JP61129232A JP12923286A JPS62288269A JP S62288269 A JPS62288269 A JP S62288269A JP 61129232 A JP61129232 A JP 61129232A JP 12923286 A JP12923286 A JP 12923286A JP S62288269 A JPS62288269 A JP S62288269A
- Authority
- JP
- Japan
- Prior art keywords
- floor
- basement
- building
- underground
- cast
- 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
- 238000000034 method Methods 0.000 title claims description 18
- 238000010276 construction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 9
- 238000009412 basement excavation Methods 0.000 description 8
- 239000004576 sand Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
〈産業上の利用分野〉
本発明は建築物の地下階増築方法、特に既設の建築物に
損傷を与えることなく地下階の増築を行なう方法に関す
るものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention provides a method for extending a basement floor of a building, particularly a method for extending a basement floor without damaging an existing building. It is related to.
〈従来の技術〉
近年、市街地では土地の有効利用を図るために複数階を
有する建築物が増大している。このような建築物でも、
各種理由によって地下階の増築が必要となる場合が多々
ある。その事例としては地下駐車場における駐車スペー
スの拡張、省エネルギ一対策としての蓄熱槽等の設備の
増設、インテリジェントビル化やＯＡ化に伴う設備の増
設等がある。このような状況にあっても、−見地上に建
築された建物に地下階を増築することは極めて困難であ
りこれまでにも殆ど例を見ない。他方、地下階の建築方
法としては、例えば地下変電所の掘削等に採用される逆
打ち工法があり、これは、予め柱を建込み、その柱を支
持杭に利用しながら地下１階から順次掘削しながらスラ
ブを打設し、各階を構築しているものである。<Background Art> In recent years, in urban areas, buildings with multiple floors have been increasing in order to make effective use of land. Even in buildings like this,
It is often necessary to add a basement floor for various reasons. Examples of this include expanding parking spaces in underground parking lots, adding equipment such as heat storage tanks as an energy-saving measure, and adding equipment in conjunction with intelligent buildings and OA. Even under these circumstances, it is extremely difficult to add a basement floor to a building built on a ground floor, and this has hardly been seen before. On the other hand, as a construction method for underground floors, there is a reverse construction method that is used, for example, when excavating underground substations. Each floor is constructed by pouring slabs while excavating.
〈発明が解決しようとする問題点〉
しかしながら、前記のような逆打ち工法では、初めから
地下室を構築することが予定されており、この目的のた
めに柱にはブラケットが付されており、それを地下部分
に設置している。しかし、最初には地下階増設の予定が
なく、後になって新たに地下階を構築しようとした場合
、既設の杭と地盤で構造物が支持されており、地下の地
盤を掘削することにより構造物が不安定になる。<Problems to be solved by the invention> However, in the above-mentioned reverse construction method, it is planned to construct a basement from the beginning, and brackets are attached to the pillars for this purpose. is installed in the basement. However, if there were no plans to add a basement floor at first, and a new basement floor was later constructed, the structure would be supported by the existing piles and the ground, and the structure would need to be constructed by excavating the underground ground. Things become unstable.
本発明はこのような従来の問題点に鑑みてなされたもの
で、その目的は、比較的簡単な作業で建築物の地下階を
増設出来、しかもコンクリート等の材料の使用量を最少
限に抑えることの可能な地下階の増築方法を提供するこ
とである。The present invention was made in view of these conventional problems, and its purpose is to make it possible to add a basement floor to a building with relatively simple work, and to minimize the amount of materials used such as concrete. The purpose of the present invention is to provide a method for expanding a basement floor that is possible.
く問題点を解決するための手段〉
本発明は上記目的を達成するため、地階を増設するに当
り、建築物の地中梁の下側を掘削し、所定深さ位匹で地
下１階の床をコンクリート打ちし。Means for Solving the Problems> In order to achieve the above object, the present invention, when adding a basement, excavates the underside of the underground beam of the building and excavates the first basement floor to a predetermined depth. Pour concrete on the floor.
建築物固定支持用の場所打ち杭の周りにコンクリートを
追加打設して地階用の柱を構築し、次に地下１階の床下
を掘削、コンクリート打ち及び柱構築する工程を順次行
なうようにしたことを要旨とする。Additional concrete was cast around the cast-in-place piles for fixed support of the building to construct columns for the basement, and then the process of excavating the subfloor of the first basement floor, pouring concrete, and constructing the columns was carried out in sequence. The gist is that.
〈作用〉
上記のような構成により、地中梁（１階の床に相当）に
作業用開口が形成され、地中梁下側が掘削される。地中
梁下方に所定の高さく深さ）の空間が出来たら、その掘
下げ地面に地下１階の床がコンクリ−１〜打ちされ、ま
た場所打ち杭の周りをコンクリート打ちして地下階用の
柱を構築する。<Operation> With the above configuration, a working opening is formed in the underground beam (corresponding to the floor of the first floor), and the lower side of the underground beam is excavated. Once a space of a specified height and depth is created below the underground beam, the floor of the first basement floor is poured with concrete on the excavated ground, and concrete is poured around the cast-in-place piles to form the basement floor. Build a pillar.
更に下の地下階を増築する場合は、前記地下１階の床建
造時に当該床には予め作業用の孔を形成し、次に続く掘
削作業の便を図っている。更に、最初の作業工程で地中
連続壁を構築し、この地中連続壁を地中梁と結合させて
建築物の支持を行なうと、地下階増設工事中の構造物の
安定性がよくなり。If a lower basement floor is to be added, a working hole is formed in advance in the first basement floor when the floor is constructed to facilitate the subsequent excavation work. Furthermore, if an underground continuous wall is constructed in the first work process and this underground continuous wall is connected to underground beams to support the building, the stability of the structure will be improved during the basement floor extension work. .
また地震力に対しての耐震要素として有効に働く。It also works effectively as a seismic element against earthquake forces.
〈実施例〉
第１図乃至第７図は本発明による地下階増築手順を示す
図である。これらの図において符号１は最初に建造され
た建物（以下既設建造物という）であり、２は既設建造
物１の１階床を構成する一方、当該既設建造物１の基礎
を成す地中梁、３は既設建造物を支持すべく地中に打込
まれた場所打ち杭である。第１図は既設建造物１を建造
したままの状態を示す。このような既設建造物１につい
て１例えば地下１諧と地下２階を増設したいという場合
について考えてみる。<Example> FIGS. 1 to 7 are diagrams showing the procedure for expanding a basement floor according to the present invention. In these figures, numeral 1 is the first building constructed (hereinafter referred to as the existing building), and 2 constitutes the first floor of the existing building 1, while the underground beam that forms the foundation of the existing building 1. , 3 are cast-in-place piles driven into the ground to support the existing structure. FIG. 1 shows the state of the existing building 1 as it is constructed. Let's consider a case where, for example, it is desired to add one basement floor and two basement floors to such an existing building 1.
地下階を増築するに当っては先ず第２図に示されている
ように、既設建造物１の側壁部の地中に、地中連続壁４
が打設される。この地中連続壁４は既設建造物１から約
１．５ｍの地点に設けられる。When extending the basement floor, first, as shown in Figure 2, underground continuous walls 4 are installed underground on the side walls of the existing building 1.
is poured. This underground continuous wall 4 is installed at a point approximately 1.5 m from the existing structure 1.
この地中連続壁４は地下階建造のための土砂掘削時の山
止め、及び地下階増築による荷重増に対して杭、耐力壁
を兼用するものである。This underground continuous wall 4 serves as a pile stopper during excavation of earth and sand for the construction of the basement floor, and also as a pile and a load-bearing wall for the increased load due to the extension of the basement floor.
次いで第３図に示されている様に、地中連続壁４の上端
部分は地中梁２にコンクリート打ち等の方法で緊結され
る。これにより地中連続壁４は既設建造物１の荷重を主
たる要因とする鉛直力受けが出来るよう設定されると共
に地震力処理が可能となる。この地中梁２と地中連続壁
４とが互いに結合されると、既設構造物の１階床に作業
用の孔５が開設され、この作業孔５を通して地中梁２の
下側が一次掘削され、土砂が作業孔５を通して運び出さ
れる。Next, as shown in FIG. 3, the upper end portion of the underground continuous wall 4 is fastened to the underground beam 2 by a method such as concrete pouring. As a result, the underground continuous wall 4 is set so as to be able to receive the vertical force mainly due to the load of the existing structure 1, and is also capable of handling seismic force. When the underground beam 2 and the underground continuous wall 4 are connected to each other, a working hole 5 is opened in the first floor of the existing structure, and the lower side of the underground beam 2 is first excavated through this working hole 5. The earth and sand are carried out through the working hole 5.
前記−次掘削により、所定の深さまで地面が掘り下げら
れると、第４図に示すように、地中梁２を補強する梁６
がコンクリート打ちされると共に。When the ground is dug down to a predetermined depth by the above-mentioned secondary excavation, a beam 6 reinforcing the underground beam 2 is formed as shown in FIG.
was poured with concrete.
既設の場所打ち杭３の周りにコンクリートが追加打設さ
れ地階用柱９が構築される。この地階用柱９構築用コン
クリ一ト打設時には地下２階用の柱筋を下方に延ばして
おく。そして、地下１階分の床７がコンクリ−１〜打ち
される。この地下１階分の床７には、更に地下２階構築
用の掘削作業が出来る様、作業孔８が形成される。床７
が乾燥すると、作業孔８を通して床７下側が二次掘削さ
れ、掘削された土砂が作業孔８及び５を通して搬出され
る（第５図）。この掘削により、床７の下方に所定の深
さまで地面が掘り下げられると、第６図に示すように、
既設の場所打ち杭３の周りにコンクリートが追加打設さ
れ、地階用柱９が地下２階の部分まで延長して構築され
る。そして掘り下げられた土砂の上には地下２階分の床
１ｏがコンクリ−１〜打ちされる。Concrete is additionally placed around the existing cast-in-place piles 3 to construct basement columns 9. When pouring concrete for constructing the basement column 9, the column reinforcement for the second basement floor is extended downward. Then, the floor 7 for one underground floor is poured with concrete. A working hole 8 is formed in the floor 7 for the first basement floor so that excavation work for constructing the second basement floor can be carried out. floor 7
After drying, the lower side of the floor 7 is excavated for a second time through the working hole 8, and the excavated earth and sand is carried out through the working holes 8 and 5 (Fig. 5). By this excavation, when the ground is dug down to a predetermined depth below the floor 7, as shown in FIG.
Concrete is additionally placed around the existing cast-in-place piles 3, and the basement pillars 9 are extended to the second basement floor. Then, on top of the excavated earth and sand, a floor 1o for two basement floors will be poured with concrete.
こうして、地下２階までの構築が完了すると、コンクリ
ートの乾燥を待って第７図に示すように地中梁２及び地
下１階用の床７に開設されていた作業孔５，８が塞がれ
仕上げが行なりれる。前記第１次及び第２次掘削によっ
て場所打ち杭３が露出せしめられることにより、土砂と
場所打ち杭３との間の摩擦力が軽減し、既設建造物１が
沈下する恐れがあるが、二九は地中連続壁４と地中梁と
の結合によって支持補強される。更に地下２階の床１ｏ
の下に追加杭１３を打設することにより支持力を増大さ
せることができる。また地階１階及び地下２階部分の構
築に際して場所打ち杭３の周りにコンクリート打ちがな
され、より太い地階用の柱９が建造されるから、既設建
造物１及び地下階部分を含めた建物全体の支持は、場所
打ち杭３、地中連続壁４及び地階用柱９によってより完
壁に行なわれる。When the construction up to the second basement floor is completed, the work holes 5 and 8 made in the underground beam 2 and the floor 7 for the first basement floor are closed after the concrete has dried, as shown in Figure 7. Finishing can be done. By exposing the cast-in-place pile 3 through the first and second excavations, the frictional force between the earth and sand and the cast-in-place pile 3 is reduced, and there is a risk that the existing structure 1 may sink. 9 is supported and reinforced by the connection between the underground continuous wall 4 and the underground beam. Furthermore, floor 1o on the second basement floor
The supporting force can be increased by driving additional piles 13 below. In addition, when constructing the first basement floor and the second basement floor, concrete is cast around the cast-in-place piles 3 and thicker columns 9 for the basement are constructed, so the entire building including the existing building 1 and the basement floor The support of the basement is more completely achieved by the cast-in-place piles 3, the continuous underground walls 4, and the columns for the basement 9.
第８図及び第９図は、地階部分構築時に既設の場所打ち
杭３に対してコンクリートを追加打設して構築された地
階用の柱９の内部を示す支所面図並びに平断面図である
。これらの図から明らかなように、この実施例では、丸
形断面を有する場所打ち杭３の周囲に主鉄筋１１が場所
打ち杭３を包囲する断面四角形状に配筋され、この配筋
内にコンクリートが打ち込まれる。これによって既設の
場所打ち杭３と補強柱３ａとが一体となった地階用の柱
が構築され、第１０図及び第１１図に示されるように、
既設建造物上の柱１２と同じ平面位置に当該柱１２より
も大きな断面構造を持つ地階用の柱９が配置されるに
の地階用の柱９の端造例としては第８図及び第９図に示
されたちの以外にも種々の例が考えられる。第１２図乃
至第１４図は地階用の柱９の種々の構築例を示す図であ
る。第１２図に示す例では互いに近接した２本の場所打
ち杭３の中間部分に補強柱３ｂをコンクリート打設する
と共に全体が一つの柱となる様に接続したもので地階用
柱９として大きな支持力を作り出すことができる。第１
３図に示す例では、第１２図におけると同様の関係にあ
る場所打ち杭３の間に補強柱３ｃを構築する一方、既設
の場所打ち杭を撤去し、前記補強柱自体を地階用柱９と
して使用するようにしたものである。この例では柱９の
強度を十分に確保すれば、地下階フロアに余計な柱が立
設されることがなく、フロアスペースの有効利用を図る
ことができる。更に第１４図に示す例では比較的近接し
た位置に複数（この例では５本）の既成杭１３が配置さ
れている場合の地階用の柱の構築例である。Figures 8 and 9 are a branch plan and a plan sectional view showing the inside of the basement column 9, which was constructed by additionally placing concrete on the existing cast-in-place pile 3 when constructing the basement part. . As is clear from these figures, in this embodiment, the main reinforcing bars 11 are arranged around the cast-in-place pile 3 having a round cross section and have a rectangular cross-section surrounding the cast-in-place pile 3, and within this reinforcement Concrete is poured. As a result, a basement column is constructed in which the existing cast-in-place pile 3 and the reinforcing column 3a are integrated, and as shown in FIGS. 10 and 11,
8 and 9 are examples of finished construction of the basement pillar 9, in which the basement pillar 9 having a larger cross-sectional structure than the pillar 12 is placed at the same planar position as the pillar 12 on the existing building. Various examples other than those shown in the figure are possible. FIGS. 12 to 14 are diagrams showing various construction examples of columns 9 for basements. In the example shown in Fig. 12, a reinforcing column 3b is concreted in the middle of two cast-in-place piles 3 that are close to each other, and the whole is connected to form one column, which provides great support as a basement column 9. can generate power. 1st
In the example shown in FIG. 3, a reinforcing column 3c is constructed between cast-in-place piles 3 having the same relationship as in FIG. It is designed to be used as a. In this example, if the strength of the pillars 9 is ensured sufficiently, no unnecessary pillars will be erected on the basement floor, and the floor space can be used effectively. Furthermore, the example shown in FIG. 14 is an example of construction of a column for a basement in which a plurality (five in this example) of prefabricated piles 13 are arranged relatively close to each other.
この場合は前記複数の既成杭１３の一つに対して第８図
及び第９図で示したのと同様の手法で補強柱３ｄをコン
クリート打ちし、この補強柱３ｄと既成杭１３とが一体
化したものを柱９とする一方、残りの既成杭１３を撤去
したものである。この場合も、地下階フロアに余計な柱
が立設されることがなく、フロアスペースの有効利用を
図ることができる。In this case, a reinforcing column 3d is concreted onto one of the plurality of prefabricated piles 13 using the same method as shown in FIGS. 8 and 9, and this reinforcing column 3d and the prefabricated pile 13 are integrated. This is used as the pillar 9, while the remaining pre-fabricated pile 13 is removed. In this case as well, no unnecessary pillars are erected on the basement floor, and the floor space can be used effectively.
なお、上の実施例では、地下階増設工事に当っての最初
の段暗で、建造物の外壁から所定寸法離れた位置に地中
連続壁を打設し、次いで前記地中梁と地中連続壁とをコ
ンクリートで緊結する作業工程が採用されているが、こ
れらの工程は必要に応じて採用するだけでよい。In addition, in the above example, in the first stage of underground floor extension work, an underground continuous wall is cast at a predetermined distance from the outer wall of the building, and then the underground beam and the underground A work process is used to connect the continuous wall with concrete, but these processes only need to be adopted as necessary.
〈発明の効果〉
以上説明したように、本発明によれば、既設の建造物に
対して側壁部に地中連続壁を構築し、この地中連続壁と
既に設けられている場所打ち杭とによって前記既設建造
物を支持しながら逆打ち工法によって地下階の建造をす
るようにしたため、建造物周囲の地盤のゆるみと最小限
に抑えながら効率的な地下階構築作業を実現し得る。又
大掛かりな工事によって建造物を支持しなくても済むか
ら工費の低減に役立つ等種々の効果が得られる。<Effects of the Invention> As explained above, according to the present invention, an underground continuous wall is constructed on the side wall of an existing building, and this underground continuous wall and the already installed cast-in-place piles are connected. Since the basement floor is constructed using the reverse construction method while supporting the existing building, efficient basement floor construction work can be realized while minimizing the loosening of the ground around the building. Furthermore, since there is no need to support the building through large-scale construction, various effects such as helping to reduce construction costs can be obtained.
第１図は本発明の地下階増設工事が適用される建造物の
構造を示す正面図、第２図は第１図の建造物の脇に地中
連続壁を打設した工程を示す図、第３図は地中連続壁と
地中梁とを結合した後、第１次掘削を施工した工程を示
す図、第４図は地下１階分の床の打設及び地階用柱の構
築工程を示す図、第５図は第２次の掘削工程を示す図、
第６図は地下２階分の床の打設及び地階用柱の構築工程
を示す図、第７図は前記一連の地下階増設作業における
仕上工程を示す図、第８図は場所打ち杭を利用した地階
用柱の構造例を模式的に示す支所面図、第９図は第８図
に示された地階用柱の断面構造を示す第８図ＩＸ−ＩＸ
線における断面図、第１０図は既設建造物部分における
柱の配列を示す平面図、第１１図は第１０図に示す建造
物の増設された地下階部分における柱の配列を示す平面
図、第１２図は場所打ち杭と結合させた地階用杭の構造
例を示す平断面図、第１３図は両側の場所打ち杭を撤去
し地階用柱を新設した例を示す平断面図、第１４図は複
数の既成杭の一つを補強柱と一体化して地階用柱とする
一方、残りの既成杭を撤去した例を示す平断面図である
。
１・・既設建造物、２・・地中梁、３・・場所打ち杭、
４・・地中連続壁、５，８・・作業孔、６・・補強梁、
７・・地下１階床、９・・地階用柱、１０・・地下２階
床、１１・・主鉄筋、１２・・１階柱、１３・・既成杭
。
第８２Figure 1 is a front view showing the structure of a building to which the basement floor extension work of the present invention is applied, Figure 2 is a diagram showing the process of installing an underground continuous wall on the side of the building in Figure 1, Figure 3 is a diagram showing the process of performing the first excavation after connecting the underground continuous wall and underground beam, and Figure 4 is the process of pouring the floor for one basement level and constructing columns for the basement. Figure 5 is a diagram showing the second excavation process,
Figure 6 is a diagram showing the process of pouring the floor for two basement floors and constructing columns for the basement, Figure 7 is a diagram showing the finishing process in the series of basement floor expansion work, and Figure 8 is a diagram showing the process of pouring the cast-in-place piles. A branch plan schematically showing an example of the structure of the basement column used, and FIG. 9 is a diagram IX-IX showing the cross-sectional structure of the basement column shown in FIG.
10 is a plan view showing the arrangement of columns in the existing building portion; FIG. 11 is a plan view showing the arrangement of columns in the expanded underground floor portion of the building shown in FIG. 10; Figure 12 is a plan sectional view showing an example of the structure of a basement pile combined with cast-in-place piles, Figure 13 is a plan sectional view showing an example of removing cast-in-place piles on both sides and installing a new basement column, and Figure 14. is a plan cross-sectional view showing an example in which one of the plurality of prefabricated piles is integrated with a reinforcing column to form a basement column, while the remaining prefabricated piles are removed. 1. Existing building, 2. Underground beam, 3. Cast-in-place pile,
4. Underground continuous wall, 5, 8. Working hole, 6. Reinforcement beam,
7. 1st basement floor, 9. Basement pillars, 10. 2nd basement floor, 11. Main reinforcing bars, 12. 1st floor columns, 13. Prefabricated piles. 82nd
Claims (1)
よって基礎を形成された建造物において、地中梁の下側
を掘削し、 所定の高さ寸法だけ掘削した地点で地下１階部分に対応
する場所打ち杭の周りをコンクリート打設して地階用柱
を構築すると共に地下１階の床をコンクリート打ちし、 更に地下１階の床下を掘削し、地下２階の柱を構築し且
つ床をコンクリート打ちする工程を順次施工するように
したことを特徴とする建造物の地下階増築方法。[Claims] In a building whose foundation is formed by an underground beam and cast-in-place piles driven into the ground below the underground beam, the underside of the underground beam is excavated to a predetermined height. At the point where the dimensions were excavated, concrete was poured around the cast-in-place piles corresponding to the first basement floor to construct columns for the basement, the floor of the first basement floor was poured with concrete, and the area under the floor of the first basement floor was excavated. A method for extending a basement floor of a building, characterized in that the steps of constructing columns for the second basement floor and pouring concrete for the floor are carried out sequentially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61129232A JPH0684690B2 (en) | 1986-06-05 | 1986-06-05 | Building basement extension method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61129232A JPH0684690B2 (en) | 1986-06-05 | 1986-06-05 | Building basement extension method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62288269A true JPS62288269A (en) | 1987-12-15 |
| JPH0684690B2 JPH0684690B2 (en) | 1994-10-26 |
Family
ID=15004434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61129232A Expired - Fee Related JPH0684690B2 (en) | 1986-06-05 | 1986-06-05 | Building basement extension method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684690B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0230854A (en) * | 1988-07-18 | 1990-02-01 | Shimizu Corp | Method for reconstructing multistoried building |
| JP2007169992A (en) * | 2005-12-21 | 2007-07-05 | Takenaka Komuten Co Ltd | Bearing power increasing method in extension or reconstruction of upper structure of existing building |
| JP2007177407A (en) * | 2005-12-27 | 2007-07-12 | Takenaka Komuten Co Ltd | Underground story extension method under the foundation of existing building |
| JP2012136932A (en) * | 2012-03-13 | 2012-07-19 | Mitani Sekisan Co Ltd | Seismic strengthening structure of existing builing |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100976621B1 (en) * | 2008-06-03 | 2010-08-17 | 주식회사 가인이앤피 | Construction method for basement extention |
| KR100976620B1 (en) * | 2008-06-03 | 2010-08-17 | 주식회사 가인이앤피 | Construction method for basement extention |
| KR101431621B1 (en) * | 2013-03-11 | 2014-08-21 | 주식회사 엔티에스건설 | Mehod for constructing underground wall in extension of undergound parking lot |
| KR101387954B1 (en) * | 2013-04-16 | 2014-04-22 | 주식회사 엔티에스건설 | Mehod for constructing underground wall in extension of undergound parking lot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324725A (en) * | 1976-08-19 | 1978-03-07 | Rca Corp | Intensity controller |
| JPS605968A (en) * | 1983-06-23 | 1985-01-12 | 大成建設株式会社 | Prestress introduction of pc slab in existing structure |
-
1986
- 1986-06-05 JP JP61129232A patent/JPH0684690B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324725A (en) * | 1976-08-19 | 1978-03-07 | Rca Corp | Intensity controller |
| JPS605968A (en) * | 1983-06-23 | 1985-01-12 | 大成建設株式会社 | Prestress introduction of pc slab in existing structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0230854A (en) * | 1988-07-18 | 1990-02-01 | Shimizu Corp | Method for reconstructing multistoried building |
| JP2007169992A (en) * | 2005-12-21 | 2007-07-05 | Takenaka Komuten Co Ltd | Bearing power increasing method in extension or reconstruction of upper structure of existing building |
| JP2007177407A (en) * | 2005-12-27 | 2007-07-12 | Takenaka Komuten Co Ltd | Underground story extension method under the foundation of existing building |
| JP2012136932A (en) * | 2012-03-13 | 2012-07-19 | Mitani Sekisan Co Ltd | Seismic strengthening structure of existing builing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0684690B2 (en) | 1994-10-26 |
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