JP2561970B2 - Panel structure for underground wall and construction method of underground wall - Google Patents
Panel structure for underground wall and construction method of underground wallInfo
- Publication number
- JP2561970B2 JP2561970B2 JP2190676A JP19067690A JP2561970B2 JP 2561970 B2 JP2561970 B2 JP 2561970B2 JP 2190676 A JP2190676 A JP 2190676A JP 19067690 A JP19067690 A JP 19067690A JP 2561970 B2 JP2561970 B2 JP 2561970B2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- panel
- underground
- flanges
- steel plate
- 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.)
- Expired - Lifetime
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- Bulkheads Adapted To Foundation Construction (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】 《産業上の利用分野》 本発明は、地下構造物を構築するに際して、施工現場
周囲の山留めを行うことができると共に地下構造物の外
壁をも構成できる地下外壁用パネル構造及び地下外壁の
施工方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention, when constructing an underground structure, is capable of retaining a mountain around the construction site and also constituting an outer wall of the underground structure. It relates to the structure and construction method of the underground outer wall.
《従来の技術》 地下構造物を構築するための施工方法として、第５図
及び第６図に示す工法が知られている。<< Conventional Technology >> As a construction method for constructing an underground structure, the construction method shown in FIGS. 5 and 6 is known.
図において、まず地下構造物の施工対象となる地盤の
周囲に掘削孔10を掘削してその内部に自硬性安定液１を
充填する。次いで、この自硬性安定液１中に、山留壁を
構成させるためのＨ形鋼２で構成したパネル３を挿入し
て施工対象地盤の周囲を取り囲む。このパネル３は、一
組のＨ形鋼２をそれらのフランジが掘削孔10の長手方向
に沿って配列されるように間隔を隔てて配置したもので
ある。その後、Ｈ形鋼２に腹起し8,切梁９等を施工して
パネル３を山留壁となす。次いで、この山留壁に取り囲
まれた施工対象地盤の内部を掘削する。殊に、上述のパ
ネル３を構成するＨ形鋼２の相互間には、施工対象地盤
の掘削によりパネル３部分まで掘削されたときに露出し
てしまう自硬性安定液１の表面の乾燥を防止するため
に、薄鉄板７あるいは不透水性シートが張られている。
その後、パネル３に沿って構築される耐震壁としての鉄
筋コンクリート製（RC）地下外壁５や柱，梁４を施工す
ることで、地下構造物の築造を完成していた。In the figure, first, an excavation hole 10 is excavated around the ground on which an underground structure is to be constructed, and the self-hardening stabilizing liquid 1 is filled therein. Next, a panel 3 made of H-shaped steel 2 for forming a mountain retaining wall is inserted into the self-hardening stable liquid 1 to surround the ground to be constructed. This panel 3 has a set of H-shaped steels 2 arranged at intervals such that their flanges are arranged along the longitudinal direction of the drill hole 10. After that, the H-shaped steel 2 is angulated, and the beams 9 and the like are installed to form the panel 3 as a retaining wall. Next, the inside of the construction target ground surrounded by the mountain retaining wall is excavated. In particular, between the H-section steels 2 constituting the panel 3 described above, the surface of the self-hardening stabilizing liquid 1 that is exposed when the panel 3 is excavated by excavation of the ground to be constructed is prevented from drying. In order to do so, a thin iron plate 7 or a water impermeable sheet is stretched.
After that, the construction of the underground structure was completed by constructing the reinforced concrete (RC) underground outer wall 5 and the pillars and beams 4 as the earthquake resistant wall constructed along the panel 3.
《発明が解決しようとする課題》 以上の施工においては、RC地下外壁５の築造以前の仮
設状態では、山留壁としての前記パネル３が主に土圧・
水圧を負担するが、RC地下外壁５の築造後は、パネル３
はこれらを負担せず、単に埋め殺しされるものであっ
た。即ち、築造前の仮設構造と築造後の本設構造とが重
複して構築されており、コストアップや工期の長期化を
招いていた。<< Problems to be solved by the invention >> In the above-mentioned construction, in the temporary state before the construction of the RC underground outer wall 5, the panel 3 as a retaining wall is mainly earth pressure /
It bears the water pressure, but after building the RC underground wall 5, the panel 3
Did not bear these and was simply buried. That is, the temporary structure before the construction and the permanent structure after the construction are overlapped with each other, resulting in an increase in cost and a longer construction period.
また敷地面積一杯に地下構造物を構築しようとして
も、前記山留壁（パネル３）の築造幅に相当する容積及
びRC地下外壁５の厚みに相当する分の構造物の容積双方
を必要とし、地下構造物の有効容積の減少を余儀なくさ
れるという問題があった。In addition, even if an underground structure is to be constructed to fill the site area, a volume corresponding to the building width of the mountain retaining wall (panel 3) and a volume corresponding to the thickness of the RC underground outer wall 5 are required. There was a problem that the effective volume of the underground structure had to be reduced.
この発明は、以上の問題を解決するものであり、地下
構造物を施工するに際して、施工現場周囲の山留めを行
うことができると共に地下構造物の外壁をも構成させ
て、コストダウン、工期の短縮および施工の簡略化を図
ることができると共に、地下構造物の有効容積を大きく
確保できる地下外壁用パネル構造及び地下外壁の施工方
法を提供することを目的としている。This invention solves the above problems. When constructing an underground structure, it is possible to clasp the surroundings of the construction site and also configure the outer wall of the underground structure to reduce costs and shorten the construction period. It is also an object of the present invention to provide a panel structure for an underground outer wall and a method of constructing an underground outer wall, which can simplify the construction and can secure a large effective volume of the underground structure.
《課題を解決するための手段と作用》 前記目的を達成するため、この発明の地下外壁用パネ
ル構造は、掘削され自硬性安定液が充填された掘削孔内
に挿入されて山留壁を形成するパネル構造において、そ
れらのフランジが上記掘削孔の長手方向に沿って配列さ
れるように間隔を隔てて配置した一組のＨ形鋼と、これ
らＨ形鋼のフランジ間に溶接接合されて耐震性地下外壁
を構成する鋼板材とを地組みして構成したことを特徴と
する。<< Means and Actions for Solving the Problem >> In order to achieve the above object, the panel structure for underground outer wall of the present invention is inserted into an excavation hole that is excavated and filled with a self-hardening stabilizing liquid to form a mountain retaining wall. In the panel structure, a pair of H-section steels arranged at intervals such that the flanges are arranged along the longitudinal direction of the drill hole and weld-bonded between the flanges of the H-section steels are seismic-resistant. It is characterized in that it is constructed by assembling with a steel plate material that constitutes the outer wall of the basement.
以上の作用を説明すると、パネル構造は、仮設状態で
従来と同様に山留壁としての機能を発揮すると共に、他
方Ｈ形鋼間に溶接接合した鋼板材が、自硬性安定液の表
面の乾燥防止機能に加えて、本設構造の耐震壁として十
分な耐力を発揮する。Explaining the above operation, the panel structure exerts a function as a mountain retaining wall in a temporary state as in the conventional case, and the steel plate material welded between the H-shaped steels, on the other hand, dries the surface of the self-hardening stabilizing liquid. In addition to the prevention function, it exhibits sufficient proof strength as an earthquake-resistant wall of the main structure.
また本発明の地下外壁の施工方法は、施工対象地盤を
取り囲むように、自硬性安定液を充填した掘削孔を施工
する工程と、地上部においてそれらのフランジが上記掘
削孔の長手方向に沿って配列されるように間隔を隔てて
配置した一組のＨ形鋼と、これらＨ形鋼のフランジ間に
溶接接合されて耐震性地下外壁を構成する鋼板材とを地
組みして地下外壁用パネルを形成する工程と、これら地
下外壁用パネルを上記掘削孔内に挿入する工程と、これ
ら地下外壁用パネルで囲繞された上記施工対象地盤の内
部を掘削する工程と、上記施工対象地盤内に配設される
構造材とを上記地下外壁用パネルとを接合する工程とか
らなることを特徴とする。Further, the method for constructing an underground outer wall of the present invention, a step of constructing a drill hole filled with a self-hardening stabilizing liquid so as to surround the ground to be constructed, and those flanges along the longitudinal direction of the drill hole in the aboveground portion. Panel for underground outer wall by assembling a set of H-shaped steels arranged at intervals so as to be arranged and steel plate materials that are welded between the flanges of these H-shaped steels to form an earthquake-resistant underground outer wall And a step of inserting the underground outer wall panel into the excavation hole, a step of excavating the inside of the construction target ground surrounded by the underground exterior wall panel, and a step of arranging in the construction target ground. And a step of joining the structural material to be installed and the above-mentioned underground outer wall panel.
《実 施 例》 以下、この発明の一実施例を図面を用いて詳細に説明
する。<< Example >> An example of the present invention will be described below in detail with reference to the drawings.
第１図は、この発明に係る地下外壁用パネル構造を含
めて、本発明の地下外壁の施工順序を示している。FIG. 1 shows the order of construction of the underground outer wall of the present invention, including the panel structure for the underground outer wall according to the present invention.
本発明の方法は基本的には、施工対象地盤を取り囲む
ように、自硬性安定液14を充填した掘削孔12を施工する
工程と、一組のＨ形鋼16をそれらのフランジが掘削孔12
の長手方向に沿って配列されるように間隔を隔てて配置
すると共に、これらＨ形鋼16のフランジ間に鋼板材18を
掛け渡して地下外壁用パネル20を形成する工程と、これ
ら地下外壁用パネル20を掘削孔12内に挿入する工程と、
これら地下外壁用パネル20で囲繞された施工対象地盤の
内部を掘削する工程と、施工対象地盤内に配設される構
造材26,28と地下外壁用パネル20とを接合する工程とか
らなる。The method of the present invention basically comprises the step of constructing a drilling hole 12 filled with a self-hardening stabilizing liquid 14 so as to surround the ground to be constructed, and a set of H-shaped steels 16 whose drilling holes 12 are formed by their flanges.
Of the H-shaped steel 16 and the steel plate material 18 are laid between the flanges of the H-shaped steel 16 to form the panel 20 for the underground outer wall, and the panel 20 for the underground outer wall. Inserting the panel 20 into the drill hole 12,
It comprises a step of excavating the inside of the construction target ground surrounded by these underground outer wall panels 20, and a step of joining the structural materials 26, 28 arranged in the construction target ground and the underground outer wall panel 20.
まず同図（ａ）に示すように地上から矩形状断面の１
パネル分の掘削孔12を自硬性安定液14を注入しながら所
定深度まで掘削する。First, as shown in FIG. 1A, a rectangular cross section 1
The drill hole 12 for the panel is drilled to a predetermined depth while injecting the self-hardening stabilizing liquid 14.
この掘削作業と平行して、地上部では同図（ｂ）に示
すように地下外壁用パネル20を組み立てる。このパネル
20は基本的には、掘削され自硬性安定液14が充填された
掘削孔12内に挿入されて山留壁を形成するパネル構造に
おいて、一組のＨ形鋼16をそれらのフランジが掘削孔12
の長手方向に沿って配列されるように間隔を隔てて配置
し、これらＨ形鋼16のフランジ間に地下外壁を形成する
鋼板材18を掛け渡すと共に、鋼板材18に構造材26,28と
の接合部32を設けて構成される。接合部32は、施工対象
地盤を掘削してパネル20を露出させた後に形成されるこ
とになる。In parallel with this excavation work, the subterranean outer wall panel 20 is assembled on the ground as shown in FIG. This panel
20 is basically a panel structure that is inserted into a drilling hole 12 filled with self-hardening stabilizing liquid 14 to form a retaining wall, and a set of H-shaped steels 16 with their flanges drilling holes. 12
Are arranged at intervals so as to be arranged along the longitudinal direction of the steel plate material 18 that forms the underground outer wall between the flanges of these H-shaped steels 16, and the steel plate material 18 is provided with structural materials 26 and 28. The joint portion 32 is provided. The joint portion 32 is formed after excavating the construction target ground to expose the panel 20.
具体的には、山留壁を形成させるための複数のＨ形鋼
16を、適宜間隔をあけて配列し、かつ各Ｈ形鋼16の一側
部のフランジに鋼板材18を接合したパネル20を組立て、
挿入待機位置に用意しておく。ここで、フランジに接合
される鋼板材18は、施工対象地盤の掘削に際して露出さ
れる自硬性安定液14の表面の乾燥を防止するカバーとし
て機能する一方、Ｈ形鋼16と共に本設構造の地下外壁と
して機能することになる。Specifically, multiple H-section steels for forming the retaining wall
Assembling the panel 20 in which 16 are arranged at appropriate intervals, and the steel plate material 18 is joined to the flange on one side of each H-section steel 16,
Prepare at the insertion standby position. Here, the steel plate material 18 joined to the flange functions as a cover that prevents the surface of the self-hardening stabilizing liquid 14 that is exposed during excavation of the ground to be constructed from being dried, while the H-shaped steel 16 and the underground of the main construction structure are used. It will function as an outer wall.
前記鋼板材18は十分な厚さおよび耐力を有するもの
で、その背面に配置される複数のＨ形鋼16とボルトまた
は溶接によって一体化されている。The steel plate material 18 has sufficient thickness and proof stress, and is integrated with a plurality of H-section steels 16 arranged on the back surface thereof by bolts or welding.
次に、同図（ｃ）に示すように、自硬性安定液14が充
填された掘削孔12内にパネル20の建込み挿入作業を行
う。Next, as shown in FIG. 3C, the panel 20 is installed and inserted into the excavation hole 12 filled with the self-hardening stabilizing liquid 14.
なお、この作業にあたっては、前記鋼板材18が掘削孔
12の地下構造物施工予定地側に接するようにして作業を
行う。In addition, during this work, the steel plate material 18
Work is done so that it touches the planned construction site of 12 underground structures.
以上の作業は、同図（ｄ）に示すように前記掘削孔12
に連続する部分に対しても同様に実施される。The above work is carried out by the above-mentioned drilling holes 12 as shown in FIG.
The same is applied to the portion continuous with.
このようにしてパネル20で施工対象地盤を取り囲んだ
後、施工対象地盤を掘削し、各パネル20の表面を露出さ
せつつ構築予定深度まで掘り下げると、第２図（ａ）に
示すように各パネル20が露出される。In this way, after the construction target ground is surrounded by the panel 20, the construction target ground is excavated and the surface of each panel 20 is exposed to the planned construction depth as shown in FIG. 2 (a). 20 are exposed.
なお、隣接する掘削孔12それぞれに挿入されたパネル
20相互間は、前記鋼板材18がとぎれた状態となっている
ので、必要ならば同図（ｂ）に示すように隣接するパネ
ル20の各Ｈ形鋼16間に、これらを接続するために連結用
鋼板材22を配設し溶接あるいはボルトで固定する。The panel inserted in each of the adjacent drill holes 12
Since the steel plate materials 18 are disconnected from each other, if necessary, in order to connect them between the H-section steels 16 of the adjacent panels 20 as shown in FIG. The steel plate material 22 for connection is arranged and fixed by welding or bolts.
この状態で連結用鋼板材22と鋼板材18とをボルトまた
は溶接などによって固定すれば、仮設用の山留壁を兼用
したパネル20は完全に一体化され、地下外壁が完成する
ことになる。In this state, if the connecting steel plate material 22 and the steel plate material 18 are fixed by bolts or welding, the panel 20 which also serves as a temporary retaining wall will be completely integrated, and the underground outer wall will be completed.
次いで第３図及び第４図に示すように、前記パネル20
に対してRC柱26,および梁28,スラブ等を構築することで
地下構造物が完成する。Then, as shown in FIG. 3 and FIG.
The RC structure 26, beams 28, slabs, etc. will be constructed to complete the underground structure.
なお、前記梁28とパネル20との取り合い部分にはパネ
ル20側からスタッド32を突出させておくことによってパ
ネル20と梁28との一体化を図ることができる。The panel 20 and the beam 28 can be integrated by projecting the stud 32 from the side of the panel 20 where the beam 28 and the panel 20 are joined.
また、RC柱26とパネル20との取り合い部分も前記と同
様にパネル20側からスタッド32を突出させておくことに
よってパネル20とRC柱26との一体化を図ることができ
る。Further, similarly to the above, the joint portion between the RC column 26 and the panel 20 can be integrated with the panel 20 and the RC column 26 by projecting the stud 32 from the panel 20 side.
さらに、前記パネル20は単にＨ形鋼16,鋼板材18およ
び連結用鋼板材22が露出しただけの構造なので、その内
側に耐火被覆材34を吹き付ける作業を行えば、従来のRC
地下外壁と同等の耐火性を付与できる。Further, since the panel 20 has a structure in which the H-shaped steel 16, the steel plate material 18, and the connecting steel plate material 22 are simply exposed, if the work of spraying the fireproof coating material 34 on the inside is performed, the conventional RC
Can provide fire resistance equivalent to that of the underground wall.
以上の構成において、地下構造物に加わる長期の土・
水圧は主に自硬性安定液14およびパネル20のＨ形鋼16が
負担し、他方地震などの水平力が加わった場合にはパネ
ル20の鋼板材18および連結用鋼板材22が負担し、地下構
造物の耐久性を確保する。With the above configuration, long-term soil and
The water pressure is mainly borne by the self-hardening stabilizing liquid 14 and the H-shaped steel 16 of the panel 20, while when horizontal forces such as an earthquake are applied, the steel plate material 18 and the connecting steel plate material 22 of the panel 20 bear the water pressure. Ensure the durability of the structure.
なお、前記実施例では、鋼板材18背面に複数のＨ形鋼
16を連結した構造としたが、Ｈ形鋼16のフランジ間に鋼
板材18を連結する構造も採用できる。In addition, in the above embodiment, a plurality of H-shaped steels are provided on the back surface of the steel plate material 18.
Although the structure in which 16 are connected is used, a structure in which the steel plate material 18 is connected between the flanges of the H-shaped steel 16 can also be adopted.
《発明の効果》 以上実施例で詳細に説明したように、本発明にあって
は、パネル構造は、仮設状態で従来と同様に山留壁とし
ての機能を発揮すると共に、他方Ｈ形鋼間に掛け渡した
鋼板材に、自硬性安定液の表面の乾燥防止機能に加え
て、本接構造の耐震壁として十分な耐力を発揮させるこ
とができ、そのまま地下外壁として使用することができ
る。<< Effects of the Invention >> As described in detail in the above embodiments, in the present invention, the panel structure exerts the function as the mountain retaining wall in the temporary state as in the conventional case, and, on the other hand, between the H-section steels. In addition to the function of preventing the surface of the self-hardening stabilizing liquid from drying, the steel sheet material that has been stretched over can exhibit sufficient proof strength as the earthquake-resistant wall of the main connection structure, and can be used as it is as an underground outer wall.
従って、耐震性を確保した上で、コストダウン、工期
の短縮および施工の簡略化を図ることができると共に、
仮設構造と本接構造とを兼用できることにより、地下構
造物の有効容積を大きく確保することができる。Therefore, while ensuring earthquake resistance, it is possible to reduce costs, shorten the construction period, and simplify the construction.
By being able to use both the temporary structure and the main connection structure, it is possible to secure a large effective volume of the underground structure.
第１図（ａ）〜（ｅ）はこの発明の施工順序を示す説明
図、第２図（ａ）は掘削により露出した地下外壁部分を
示す斜視図、第２図（ｂ）はその平面図、第３図は地下
構造物の完成状態を示す断面図、第４図は同平面図、第
５図は従来の地下構造物の完成状態を示す断面図、第６
図は同平面図である。 12……掘削孔、14……自硬性安定液 16……Ｈ形鋼、18……鋼板材 20……パネル、22……連結用鋼板材 26,28……構造材（柱，梁） 32……接合部（スタッド）1 (a) to 1 (e) are explanatory views showing the construction sequence of the present invention, FIG. 2 (a) is a perspective view showing an underground wall portion exposed by excavation, and FIG. 2 (b) is a plan view thereof. , FIG. 3 is a sectional view showing a completed state of an underground structure, FIG. 4 is a plan view of the same, FIG. 5 is a sectional view showing a completed state of a conventional underground structure, and FIG.
The figure is a plan view of the same. 12 …… Drilling hole, 14 …… Self-hardening stabilizing liquid 16 …… H-shaped steel, 18 …… Steel plate material 20 …… Panel, 22 …… Steel plate material for connection 26,28 …… Structural material (column, beam) 32 ...... Joint part (stud)
Claims (2)
内に挿入されて山留壁を形成するパネル構造において、
それらのフランジが上記掘削孔の長手方向に沿って配列
されるように間隔を隔てて配置した一組のＨ形鋼と、こ
れらＨ形鋼のフランジ間に溶接接合されて耐震性地下外
壁を構成する鋼板材とを地組みして構成したことを特徴
とする地下外壁用パネル構造。1. A panel structure which is excavated and inserted into an excavation hole filled with a self-hardening stabilizing liquid to form a retaining wall,
A pair of H-section steels arranged at intervals so that the flanges are arranged along the longitudinal direction of the drill hole, and welded between the flanges of the H-section steels to form an earthquake-resistant underground outer wall. A panel structure for an underground wall, which is constructed by assembling a steel sheet material that
定液を充填した掘削孔を施工する工程と、 地上部においてそれらのフランジが上記掘削孔の長手方
向に沿って配列されるように間隔を隔てて配置した一組
のＨ形鋼と、これらＨ形鋼のフランジ間に溶接接合され
て耐震性地下外壁を構成する鋼板材とを地組みして地下
外壁用パネルを形成する工程と、 これら地下外壁用パネルを上記掘削孔内に挿入する工程
と、 これら地下外壁用パネルで囲繞された上記施工対象地盤
の内部を掘削する工程と、 上記施工対象地盤内に配設される構造材と上記地下外壁
用パネルとを接合する工程とからなることを特徴とする
地下外壁の施工方法。2. A step of constructing an excavation hole filled with a self-hardening stabilizing liquid so as to surround the ground to be constructed, and an interval so that the flanges of the excavation hole are arranged along the longitudinal direction of the excavation hole in the aboveground portion. And a step of forming a panel for an underground outer wall by assembling a set of H-shaped steels arranged apart from each other and a steel plate material which is welded between flanges of these H-shaped steels and constitutes an earthquake-resistant underground outer wall, A step of inserting these underground outer wall panels into the excavation hole, a step of excavating the inside of the construction target ground surrounded by these underground outer wall panels, and a structural material arranged in the construction target ground A method of constructing an underground wall, comprising the step of joining the panel for the underground wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2190676A JP2561970B2 (en) | 1990-07-20 | 1990-07-20 | Panel structure for underground wall and construction method of underground wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2190676A JP2561970B2 (en) | 1990-07-20 | 1990-07-20 | Panel structure for underground wall and construction method of underground wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0480430A JPH0480430A (en) | 1992-03-13 |
| JP2561970B2 true JP2561970B2 (en) | 1996-12-11 |
Family
ID=16262033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2190676A Expired - Lifetime JP2561970B2 (en) | 1990-07-20 | 1990-07-20 | Panel structure for underground wall and construction method of underground wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561970B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2684961B2 (en) * | 1993-07-06 | 1997-12-03 | 鹿島建設株式会社 | How to build a building basement wall |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02266016A (en) * | 1989-04-04 | 1990-10-30 | Toda Constr Co Ltd | Structural process of underground concrete body of building |
-
1990
- 1990-07-20 JP JP2190676A patent/JP2561970B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0480430A (en) | 1992-03-13 |
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