JPH04293824A - Construction method for large span underground structure - Google Patents
Construction method for large span underground structureInfo
- Publication number
- JPH04293824A JPH04293824A JP3083587A JP8358791A JPH04293824A JP H04293824 A JPH04293824 A JP H04293824A JP 3083587 A JP3083587 A JP 3083587A JP 8358791 A JP8358791 A JP 8358791A JP H04293824 A JPH04293824 A JP H04293824A
- Authority
- JP
- Japan
- Prior art keywords
- beams
- carrying
- underground
- slab
- opening
- 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
- 238000010276 construction Methods 0.000 title abstract description 17
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000009415 formwork Methods 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、大スパン地下構造物の
構築工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for large span underground structures.
【０００２】0002
【従来の技術】地下構造物を施工するには、従来、仮設
としての鉄骨柱を建込んだ後で、同じく仮設としての山
留め用の切梁や腹起材を架設し、掘削する。そして、根
切りの進行とともにこの切梁を２段、３段と順次増やし
ていくことで行っている。該地下構造物が大スパンで地
中深い何層にもおよぶ大型のものになると、当然この切
梁の段数も増加し、仮設材の量も多くなる。BACKGROUND OF THE INVENTION Conventionally, in order to construct an underground structure, temporary steel columns are erected, and then struts and timbers are erected and excavated. As the root cutting progresses, the number of struts is increased to two or three stages. When the underground structure becomes large and has a large span and many layers deep underground, the number of struts will naturally increase, and the amount of temporary construction materials will also increase.
【０００３】ところで、この仮設としての鉄骨柱、切梁
や腹起材の代わりに本設の柱・梁を前記山留め用の仮設
として兼用できれば著しく経済性が向上する。このよう
な本設切梁工法の一つとして、先ず本設の構真柱（鋼管
柱）を杭工事時に建込み、続いて従来の切梁に当たる鉄
骨ボックス梁を取付ける。このあと、その内部にコンク
リートを打設して山留め壁の支持架構を構築し、次の掘
削工事に移行する。さらに直下階の鉄骨ボックス梁を取
り付け、内部コンクリート打設、掘削を繰り返して順次
地下の躯体工事を進めていく。[0003] By the way, if permanent columns and beams could be used as temporary structures for the above-mentioned pile retaining structures instead of the temporary steel columns, struts, and timbers, economical efficiency would be significantly improved. In one of these permanent strut construction methods, the permanent structural pillars (steel pipe columns) are first erected during piling work, and then steel box beams, which correspond to conventional struts, are installed. After this, concrete will be poured inside to construct a support structure for the retaining wall, and the next excavation work will begin. Furthermore, we will install the steel box beams on the floor immediately below, repeat internal concrete pouring and excavation, and proceed with construction of the underground frame in sequence.
【０００４】その他に、構真柱に十字型にＨ形鋼を組み
立てたクロスＨ形の柱を使用し、Ｈ形の鉄骨梁を架設し
、そのＨ形の梁の周囲と床スラブのコンクリートを打設
して山留め壁の支持架構を構築する方法もある。[0004] In addition, a cross H-shaped column made by assembling H-shaped steel in a cross shape is used as the main pillar, and an H-shaped steel beam is erected, and the concrete around the H-shaped beam and the floor slab is Another method is to construct a support frame for the retaining wall by pouring concrete.
【０００５】[0005]
【発明が解決しようとする課題】本設切梁工法でも、逆
打ちに構真柱を含めた山留め壁の支持架構が必要であり
、構真柱とそれに取付く梁の長さが構真柱の建入れ寸法
精度に影響されるなど、面倒な点が多い。本発明の目的
は前記従来例の不都合を解消し、山留め切梁、支保工、
構真柱等が不要で、施工が簡単かつ安全にでき、工期の
短縮とコストの低減が実現できる大スパン地下構造物の
構築工法を提供するとにある。[Problem to be solved by the invention] Even with the permanent beam construction method, a supporting frame for the retaining wall including the structural pillar is required for the reverse setting, and the length of the structural pillar and the beam attached to it is the same as that of the structural pillar. There are many troublesome points, such as being affected by the accuracy of the construction dimensions. The purpose of the present invention is to eliminate the disadvantages of the conventional example, and to
It is an object of the present invention to provide a construction method for a large span underground structure that does not require structural pillars, can be easily and safely constructed, and can shorten the construction period and reduce costs.
【０００６】[0006]
【課題を解決するための手段】本発明は前記目的を達成
するため、地下連続壁に囲まれた内部に一次根切りを行
い、中央にスリット状の梁搬入用開口部を、また、端に
土砂搬出用開口部を設けた作業床を形成し、この作業床
の下方を二次根切りし、二次根切りの終わった部分から
、前記梁搬入用開口部より梁を搬入し、搬入した梁を横
移動して敷き並べてその上端に形成するコンクリートス
ラブと一体化を図り中央にスリット状の梁搬入用開口部
を、また、端に土砂搬出用開口部を設けた地下スラブを
形成し、以下、同様の根切り、開口部よりの梁の搬入、
搬入した梁での地下スラブの形成の各工程を繰り返し、
数次根切りの後、マットスラブを施工することを要旨と
するものである。[Means for Solving the Problems] In order to achieve the above object, the present invention performs a primary root cut in the interior surrounded by an underground continuous wall, creates a slit-shaped opening for carrying the beam in the center, and also creates a slit-shaped opening for carrying in the beam at the end. A work floor was formed with an opening for transporting earth and sand, a secondary root cut was made at the bottom of this work bed, and a beam was carried in from the part where the secondary root cut had been completed through the opening for carrying in the beam. By moving the beams horizontally and laying them side by side, we integrated them with the concrete slab formed at the upper end to form an underground slab with a slit-shaped opening for carrying in the beams in the center and openings for carrying out earth and sand at the ends. Below, the same root cutting, bringing in the beam from the opening,
Repeat each step of forming the underground slab using the imported beams,
The main idea is to construct a mat slab after several root cuts.
【０００７】[0007]
【作用】本発明によれば、梁を敷き並べ、かつスラブコ
ンクリートと一体化を図り、そのスラブを山留め切梁と
した無柱空間を構築でき、逆打ち工法に必要な構真柱等
が不要となる。また、天候に左右されない地下作業空間
ができ、さらに型枠工事がなくなるか減少するので、工
期の短縮およびコストの低減になる。[Operation] According to the present invention, it is possible to construct a column-free space by laying beams side by side and integrating them with concrete slabs, and using the slabs as retaining beams, eliminating the need for structural pillars, etc., which are required in the reverse casting method. becomes. In addition, an underground work space is created that is not affected by the weather, and the need for formwork work is eliminated or reduced, resulting in shorter construction times and lower costs.
【０００８】[0008]
【実施例】以下、図面について本発明の実施例を詳細に
説明する。図１は本発明の大スパン地下構造物の構築工
法の第１工程を示す斜視図、図２は同上平面図である。
図中１は地下連続壁で、この地下連続壁１で囲まれた空
間を一次根切りとして梁せい高さ程度に掘下げ、ここに
作業床２を形成する。そしてこの作業床２の中央にスリ
ット状の梁搬入用開口部３ａを設け、また、両端に土砂
搬出用開口部４ａを設ける。図５は開口部３ａ上に設置
した梁搬入用のクレーン、６は開口部４ａ上に設置した
排土装置である。さらに、作業床２上をＰＣ部材ストッ
クヤード１８として、ここでＰＣ梁７の組立、プレスト
レスの導入等を行う。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the first step of the method for constructing a large span underground structure according to the present invention, and FIG. 2 is a plan view of the same. 1 in the figure is an underground continuous wall, and the space surrounded by this underground continuous wall 1 is dug down to about the height of the beam as a primary root cut, and a working floor 2 is formed here. A slit-shaped opening 3a for carrying in the beam is provided in the center of the working floor 2, and openings 4a for carrying out earth and sand are provided at both ends. FIG. 5 shows a crane for carrying in a beam installed above the opening 3a, and 6 shows an earth removal device installed above the opening 4a. Furthermore, the work floor 2 is used as a PC member stockyard 18, where the PC beams 7 are assembled, prestress is introduced, etc.
【０００９】作業床２は、配筋およびコンクリートを打
設して現場施工の鉄筋コンクリート製のものとしてもよ
いが、図９、図１０に示すように地下連続壁１の短スパ
ン方向にＰＣ鋼線８を配したＰＣ梁７を敷き並べ、この
ＰＣ梁７の上端にコンクリートスラブ９を形成し、この
ＰＣ梁７とコンクリートスラブ９を一体化して構成する
。
図９は、ＰＣ梁７を型枠としてその隙間にコンクリート
を打設し、このコンクリートの上部でコンクリートスラ
ブ９を構成したもので、図中１０はスラブ鉄筋である。
図１０はＰＣ梁７の上端にすて型枠１１を配し、この型
枠１１を用いてコンクリートスラブ９を構築し、合成梁
としたものである。なお、ＰＣ梁７に代えて鉄骨梁を用
いてもよい。The work floor 2 may be made of reinforced concrete constructed on site by placing reinforcement and concrete, but as shown in FIGS. 9 and 10, PC steel wires are installed in the short span direction of the underground continuous wall 1. PC beams 7 arranged with 8 are laid out, a concrete slab 9 is formed at the upper end of the PC beams 7, and the PC beams 7 and the concrete slab 9 are integrated. In FIG. 9, concrete is poured into the gap using a PC beam 7 as a formwork, and a concrete slab 9 is constructed on the top of this concrete, and 10 in the figure is a slab reinforcing bar. In FIG. 10, a cast formwork 11 is arranged at the upper end of a PC beam 7, and a concrete slab 9 is constructed using this formwork 11 to form a composite beam. Note that a steel beam may be used instead of the PC beam 7.
【００１０】第２工程として図３に示すように、前記作
業床２の下方を二次根切りする。この二次根切りでは、
土砂搬出用開口部４ａの他に梁搬入用開口部３ａも土砂
搬出用に使用できる。As a second step, as shown in FIG. 3, a secondary root cut is made below the work floor 2. In this secondary root cutting,
In addition to the earth and sand transport opening 4a, the beam transport opening 3a can also be used for earth and sand transport.
【００１１】第３工程として、図４に示すように二次根
切りの終わった部分から、前記作業床２のスリット状の
開口部３ａよりＰＣ梁７または鉄骨梁を搬入し、搬入し
た梁を横移動して地下連続壁１の短スパン方向に敷き並
べてその上端にコンクリートスラブ９を形成し、地下ス
ラブ１２を構築する。この場合、ＰＣ梁７または鉄骨梁
の端部は図１１に示すように地下連続壁１と接合させる
が、それには根切底１３のＰＣ梁受捨コンクリート１４
でＰＣ梁７を支承し、さきに図１０に示したようにＰＣ
梁７の上端にすて型枠１１を配し、この型枠１１を用い
てコンクリートスラブ９を構築して合成梁とする際に、
せん断鉄筋１５で連続壁１と結合させる。なお、図９に
示すようにＰＣ梁７を型枠としてその隙間にコンクリー
トを打設し、このコンクリートの上部でコンクリートス
ラブ９を構成するようにしてもよい。As a third step, as shown in FIG. 4, a PC beam 7 or a steel beam is carried in through the slit-shaped opening 3a of the working floor 2 from the part where the secondary root cutting has been completed, and the carried beam is The concrete slabs 9 are moved laterally and laid out in the short span direction of the underground continuous wall 1, and a concrete slab 9 is formed on the upper end thereof to construct an underground slab 12. In this case, the end of the PC beam 7 or the steel beam is connected to the underground continuous wall 1 as shown in FIG.
to support the PC beam 7, and as shown in Fig.
When placing a cast formwork 11 at the upper end of the beam 7 and constructing a concrete slab 9 using this formwork 11 to form a composite beam,
It is connected to the continuous wall 1 with shear reinforcing bars 15. In addition, as shown in FIG. 9, concrete may be poured into the gap using the PC beam 7 as a formwork, and the concrete slab 9 may be constructed on the upper part of this concrete.
【００１２】図５に示すように、地下スラブ１２には作
業床２の梁搬入用開口部３ａや土砂搬出用開口部４ａに
対応させて、中央にスリット状の梁搬入用開口部３ｂを
、また、端に土砂搬出用開口部４ｂを設ける。そして、
第４工程として、この地下スラブ１２の下方を三次根切
りし、根切りの終わった部分から、前記作業床２のスリ
ット状の開口部３ａよりＰＣ梁７または鉄骨梁を搬入し
、搬入した梁を横移動して敷き並べてその上端にコンク
リートスラブ９を形成し、前記一地下階分に地下スラブ
１２の下方に二地下階分の地下スラブ１２を構築する。As shown in FIG. 5, the underground slab 12 has a slit-shaped beam loading opening 3b in the center corresponding to the beam loading opening 3a and earth and sand loading opening 4a of the work floor 2. Further, an opening 4b for carrying out earth and sand is provided at the end. and,
As a fourth step, the lower part of this underground slab 12 is cut three times, and from the part where the root cutting is finished, a PC beam 7 or a steel beam is carried in through the slit-shaped opening 3a of the working floor 2, and the carried beam are laterally moved and laid side by side to form a concrete slab 9 on the upper end thereof, and an underground slab 12 for two underground floors is constructed below the underground slab 12 for one underground floor.
【００１３】以下、該地下スラブ１２の下方の根切り、
ＰＣ梁７または鉄骨梁を搬入、搬入した梁での地下スラ
ブ１２の形成の各工程を繰り返す。図６に示すように、
数次例えば五次根切り後、床付けを行うが、先に中央部
のマットスラブ１６ａを施工し、アイランド切梁１７で
山留め壁としての地下連続壁１を支持する。次いで図７
、図８に示すように中央部のマットスラブ１６ａの周囲
のマットスラブ１６ｂを施工して工事を完了させる。[0013] Below, root cutting below the underground slab 12;
The steps of carrying in the PC beam 7 or the steel beam and forming the underground slab 12 using the carried beam are repeated. As shown in Figure 6,
After multiple root cutting, for example, fifth root cutting, flooring is carried out, but first the mat slab 16a in the center is constructed, and the underground continuous wall 1 as a retaining wall is supported by the island strut 17. Next, Figure 7
As shown in FIG. 8, the mat slab 16b around the central mat slab 16a is constructed to complete the construction.
【００１４】このように本発明は、ＰＣ梁７または鉄骨
梁を敷き並べてその上端にコンクリートスラブ９を形成
してなる地下スラブ１２で、これを山留め切梁代わりと
した無柱空間を構築し、さらにこの地下スラブ１２の下
を掘削して地下階を構築する逆打ち工法である。図２に
矢印で土圧力の流れを示すが、連続壁１の長スパン側に
受ける土圧力αは対面する土圧力αとバランスする。短
スパン側に受ける土圧力γに対しては、せん断力βによ
り側面の土圧壁に伝達される。なお、スパンがより大き
い場合は図１２に示すように敷き並べるＰＣ梁７間に壁
または柱１９を構築することもできる。As described above, the present invention constructs a column-free space using the underground slab 12, which is made by laying PC beams 7 or steel beams and forming a concrete slab 9 on the upper end, in place of a stanchion beam. This is a reverse construction method in which the underground floor is constructed by excavating beneath this underground slab 12. The flow of soil pressure is shown by arrows in FIG. 2, and the soil pressure α received on the long span side of the continuous wall 1 is balanced with the soil pressure α facing the continuous wall 1. The earth pressure γ on the short span side is transmitted to the side earth pressure walls by shear force β. Note that if the span is larger, a wall or pillar 19 can be constructed between the PC beams 7 laid out side by side as shown in FIG.
【００１５】[0015]
【発明の効果】以上述べた本発明の大スパン地下構造物
の構築工法は、天候に左右されない地下作業空間が確保
でき、また、山留め切梁、支保工、構真柱等が不要で、
これらが障害物となることもないので、施工性、安全性
が向上し、工期の短縮、コストの低減が実現できる。さ
らに型枠工事が一切なくなるかもしくは極端に減少する
ので、職人不足に対応でき、一層、工期の短縮およびコ
ストの低減になるものである。[Effects of the Invention] The method of constructing a large span underground structure of the present invention as described above can secure an underground work space that is not affected by the weather, and does not require retaining struts, supports, structural pillars, etc.
Since these do not become obstacles, construction efficiency and safety are improved, and construction period and costs can be reduced. Furthermore, since formwork work is completely eliminated or drastically reduced, the shortage of craftsmen can be addressed, further shortening the construction period and reducing costs.
【図１】本発明の大スパン地下構造物の構築工法の第１
工程を示す斜視図である。[Fig. 1] First method for constructing a large span underground structure of the present invention
It is a perspective view showing a process.
【図２】本発明の大スパン地下構造物の構築工法の第１
工程を示す平面図である。[Figure 2] First method for constructing a large span underground structure of the present invention
It is a top view showing a process.
【図３】第２工程を示す縦断正面図である。FIG. 3 is a longitudinal sectional front view showing the second step.
【図４】第３工程を示す縦断正面図である。FIG. 4 is a longitudinal sectional front view showing the third step.
【図５】第４工程を示す縦断正面図である。FIG. 5 is a longitudinal sectional front view showing the fourth step.
【図６】最終工程前の工程を示す縦断正面図である。FIG. 6 is a longitudinal sectional front view showing a step before the final step.
【図７】最終工程を示す縦断正面図である。FIG. 7 is a longitudinal sectional front view showing the final step.
【図８】図７のＡ−Ａ線断面図である。8 is a cross-sectional view taken along line AA in FIG. 7. FIG.
【図９】作業床および地下スラブの一例を示す断面図で
ある。FIG. 9 is a sectional view showing an example of a working floor and an underground slab.
【図１０】作業床および地下スラブの他例を示す断面図
である。FIG. 10 is a sectional view showing another example of a working floor and an underground slab.
【図１１】地下連続壁と地下スラブの接合を示す縦断正
面図である。FIG. 11 is a longitudinal sectional front view showing a joint between an underground continuous wall and an underground slab.
【図１２】壁または柱がある場合の地下スラブの縦断正
面図である。FIG. 12 is a longitudinal sectional front view of an underground slab with walls or columns.
１…地下連続壁
２…作業床３ａ，３ｂ…梁搬入用開口部
４ａ，４ｂ…土砂搬出用開口部
５…クレーン
６…排土装置７…ＰＣ梁
８…ＰＣ鋼線９…コンクリ
ートスラブ １０…スラブ鉄筋
１１…すて型枠
１２…地下スラブ１３…根切底
１４…ＰＣ梁受捨
コンクリート
１５…せん断鉄筋
１６ａ，１６ｂ…マットスラブ
１７…切梁
１８…ＰＣ部材ストックヤード
１９…壁または柱1...Underground continuous wall
2...Working floor 3a, 3b...Opening for carrying in the beam
4a, 4b...Opening for carrying out earth and sand 5...Crane
6...Earth removal device 7...PC beam
8...PC steel wire 9...Concrete slab 10...Slab reinforcing bar 11...Stile formwork
12... Underground slab 13... Root cut bottom
14...PC beam receiving concrete 15...Shear reinforcement
16a, 16b...mat slab 17...stripe beam
18... PC parts stock yard 19... Wall or pillar
Claims (1)
りを行い、中央にスリット状の梁搬入用開口部を、また
、端に土砂搬出用開口部を設けた作業床を形成し、この
作業床の下方を二次根切りし、二次根切りの終わった部
分から、前記梁搬入用開口部より梁を搬入し、搬入した
梁を横移動して敷き並べてその上端に形成するコンクリ
ートスラブと一体化を図り中央にスリット状の梁搬入用
開口部を、また、端に土砂搬出用開口部を設けた地下ス
ラブを形成し、以下、同様の根切り、開口部よりの梁の
搬入、搬入した梁での地下スラブの形成の各工程を繰り
返し、数次根切りの後、マットスラブを施工することを
特徴とする大スパン地下構造物の構築工法。[Claim 1] Performing a primary root cut inside the underground continuous wall to form a working floor with a slit-shaped opening for carrying in the beam in the center and an opening for carrying out earth and sand at the end, A secondary root cut is made below this working floor, and from the part where the secondary root cut is completed, a beam is carried in through the beam carrying opening, and the carried beam is moved laterally and laid side by side, and concrete is formed on the upper end of the beam. An underground slab is formed that is integrated with the slab and has a slit-shaped opening for carrying in the beam in the center and an opening for carrying out earth and sand at the end. A method for constructing a large span underground structure, which is characterized by repeating each process of forming an underground slab using imported beams, and constructing a mat slab after several root cuttings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3083587A JPH07103583B2 (en) | 1991-03-20 | 1991-03-20 | Construction method for large span underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3083587A JPH07103583B2 (en) | 1991-03-20 | 1991-03-20 | Construction method for large span underground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04293824A true JPH04293824A (en) | 1992-10-19 |
| JPH07103583B2 JPH07103583B2 (en) | 1995-11-08 |
Family
ID=13806628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3083587A Expired - Lifetime JPH07103583B2 (en) | 1991-03-20 | 1991-03-20 | Construction method for large span underground structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07103583B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193084A (en) * | 1992-12-21 | 1994-07-12 | Giken Seisakusho Co Ltd | Construction method for undeground structure |
| CN102758449A (en) * | 2011-04-26 | 2012-10-31 | 柳忠林 | Large-span prestressed trough composite slab used as roof of air-defense basement |
| CN105507345A (en) * | 2015-12-04 | 2016-04-20 | 嘉库智能停车***（上海）有限公司 | Reversed construction method for well type fully-automatic three-dimensional garage |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348835C (en) * | 2005-06-07 | 2007-11-14 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63312437A (en) * | 1987-06-11 | 1988-12-20 | 大成建設株式会社 | Construction of underground structure |
-
1991
- 1991-03-20 JP JP3083587A patent/JPH07103583B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63312437A (en) * | 1987-06-11 | 1988-12-20 | 大成建設株式会社 | Construction of underground structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193084A (en) * | 1992-12-21 | 1994-07-12 | Giken Seisakusho Co Ltd | Construction method for undeground structure |
| CN102758449A (en) * | 2011-04-26 | 2012-10-31 | 柳忠林 | Large-span prestressed trough composite slab used as roof of air-defense basement |
| CN105507345A (en) * | 2015-12-04 | 2016-04-20 | 嘉库智能停车***（上海）有限公司 | Reversed construction method for well type fully-automatic three-dimensional garage |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07103583B2 (en) | 1995-11-08 |
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