JP2012107479A - Method for constructing underground and aboveground structure - Google Patents

Method for constructing underground and aboveground structure Download PDF

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JP2012107479A
JP2012107479A JP2010258921A JP2010258921A JP2012107479A JP 2012107479 A JP2012107479 A JP 2012107479A JP 2010258921 A JP2010258921 A JP 2010258921A JP 2010258921 A JP2010258921 A JP 2010258921A JP 2012107479 A JP2012107479 A JP 2012107479A
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floor
ground
construction
underground
steel
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Eiichi Ohata
榮一 大畑
Daiki Horiuchi
大樹 堀内
Koichi Hirosawa
浩一 廣澤
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Elcos Llc
合同会社エルコス
Itec Corp
株式会社アイ・テック
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PROBLEM TO BE SOLVED: To provide a method for constructing underground and aboveground structures, which enables a main body structure to also serve as a temporary construction by basically omitting the temporary construction becoming unnecessary after the completion of the underground structure.SOLUTION: A method for constructing underground and aboveground structures comprises: a step of constructing earth retaining having cut-off properties and adapting to earth pressure; a step of excavating a pile pit for creation on a job site from an existing ground level to a bearing ground level by a mechanical caisson type pile construction method after discharge of water from the inside of the earth retaining; a step of constructing an on-site creation pile by placing concrete with no reinforcing bar or concrete in the state of reinforcing bar arrangement from the bearing ground level to a building foundation base level; and a step of constructing reinforced concrete to the building foundation base level, after installing an anchor bolt for a steel column of a building body in the concrete with no reinforcing bar or an upper portion of the on-site creation pile.

Description

本発明は、鉄骨を中心に構成され、かつ地下部を有する建築物において、杭を構築後、地下部と地上部との同時施工を可能とする地下・地上構造物の施工方法に関するものである。  The present invention relates to a construction method for an underground structure and an underground structure that enables simultaneous construction of an underground part and an above-ground part after building a pile in a building having a steel part and having an underground part. .
従来、地下構造を有する殆どの建物が鉄筋コンクリート造で構築されている。建物の地下構造物の施工には、山留工事と切梁の仮設材により建物周囲の土の崩壊を防ぎながら掘削する方法と、山留工事とアースアンカーで建物周囲の土の崩壊を防ぎながら掘削する方法があり、その何れかで地下構造物全体の構築される範囲を掘削した後に地下構造物を基礎、最下階、そして順次地下1階まで構築する施工法が一般的である。  Conventionally, most buildings having an underground structure are constructed of reinforced concrete. For the construction of the underground structure of the building, the method of excavation while preventing the collapse of the soil around the building by means of the mountain construction and temporary materials of the beam, and the soil around the building is prevented by the mountain construction and the earth anchor There is a method of excavation, and after one excavates the area to be constructed of the entire underground structure, the construction method is generally to construct the underground structure to the foundation, the lowest floor, and then to the first underground floor.
地下・地上同時施工法の従来例としては、例えば、下記特許文献1に示すような逆打工法が知られている。この逆打工法は、1階以下の大梁を鉄骨造(S造)とし、柱を構真柱(仮設柱)を内蔵した鉄筋コンクリート造とするものである。さらに、床スラブは支柱不要とし、また、梁の型枠、配筋、コンクリート工事および床スラブ形成用の型枠を支持する支柱の立設工事、支柱用地盤の補強工事を不要にするものである。大梁は構真柱に高力ボルト接合としている。  As a conventional example of the simultaneous underground and ground construction method, for example, a reverse hammering method as shown in Patent Document 1 below is known. This reverse striking method is a steel reinforced structure (S structure) for large beams below the first floor, and a reinforced concrete structure with built-in columns (temporary columns). Furthermore, the floor slabs do not require support columns, and do not require beam formwork, bar arrangement, concrete work, support work for supporting the formwork for floor slab formation, or reinforcement work for the ground for the support. is there. The large beam is a high-strength bolt joint to the true pillar.
別の従来例として、下記特許文献2に示すような施工方法では、構真柱を適用しない柱であっても、鉄骨柱の鉄骨ジョイント部を省くことで施工を簡素化し、従来の逆打工法の各種の欠点を除去するものである。その構成は、山留と構真柱を施工した後、地下へ向け根切りと躯体施工を繰り返し、地下階構造体を構築する逆打工法において、一次根切した根切り底における外周部の柱の構築箇所に、構築すべき柱の高さに適合した敵宣深さの壺堀を行い、壺堀部の孔底に仮設持手段を講じて鉄骨建方し、同時に所要のコンクリート工事により該部躯体を構築した後、二次根切りを行い、該二次根切りに併せて前記仮設持手段を取り除いて、下部躯体を施工することを特徴としている。  As another conventional example, in the construction method as shown in Patent Document 2 below, even if the pillar is not applied, the construction is simplified by omitting the steel joint portion of the steel column, and the conventional reverse placement method The above-mentioned various drawbacks are eliminated. After the construction of the Yamatome and the structural pillar, the root pillar and the construction of the building are repeated, and the structure of the basement is constructed by the reverse driving method to construct the underground floor structure. At the construction site, dig a trench with an enemy depth suitable for the height of the pillar to be constructed, and install a steel frame with temporary holding means at the bottom of the trench, and at the same time perform the required concrete work. After the building is constructed, secondary root cutting is performed, and the temporary holding means is removed along with the secondary root cutting, and the lower housing is constructed.
特開平06−185084号公報Japanese Patent Laid-Open No. 06-185084 特開平07−026574号公報Japanese Patent Application Laid-Open No. 07-026574
従来の地下構造物の施工法は、どの施工法も、切梁や足場を大量に使いながら掘削を進めていくため施工に長時間を要すること、地下構造物が完成したら不必要となる仮設材が大量に使われること、施工が複雑化して危険性が高いこと等々、工期的、経済的、安全的に問題点が多い。掘削終了後は、本体の地下構造物を最下階より構築開始するものの、切梁等が邪魔になるために大型の製作物の採用が難しく、在来の現場打の鉄筋コンクリート造で時間をかけ、基礎、最下階躯体から順次地下1階の躯体まで構築することになり、時間とコストがかかり過ぎるのが現状である。  As for the conventional construction methods for underground structures, any construction method requires a long time for construction because it proceeds with excavation while using a large amount of beams and scaffolds, and temporary materials that are unnecessary once the underground structure is completed There are many problems in terms of construction, economics, and safety, such as the fact that it is used in large quantities, the construction is complicated and the danger is high. After excavation, construction of the underground structure of the main body starts from the bottom floor, but it is difficult to adopt large-scale products because of the obstruction of the beams, etc. From the foundation and the bottom floor to the first basement, the current situation is that it takes too much time and money.
この時間的な問題点を解決するために行われている逆打工法は、杭工事の際に仮設材として構真柱を杭のコンクリート打設後に、地下深くの杭レベルのコンクリート部分に差し込み固定する。このため建入れ精度が悪く、この後の鉄骨の大梁を取付ける時に接合部が合わないので鉄骨大梁は現場合わせとなり、構真柱間の寸法を現場測定し、それに合わせた接合金物を用意する必要が生じたり、接合金物が作り替えになる等の不具合が生じる。このため、施工が困難を極め、時間がかかり、工程にも大きな影響を与える。また、鉄筋コンクリート造の大梁の場合は、躯体構築階において梁や床組用の型枠と支保工の仮設材を設置する空間が必要である。そのため鉄骨造の床組に対して、掘削量も多くなり、山留工事がコスト高になる。さらに、型枠、支保工の大量の仮設材を必要とし、鉄筋工事、型枠工事、コンクリート工事と工種が増えることで大幅に工程が延びるため、時間的な問題点が生じる。  In order to solve this time problem, the reverse driving method is to fix the concrete pillar as a temporary material during pile construction, and then insert it into the concrete part at the pile level deep underground. To do. For this reason, the accuracy of erection is poor, and the joints do not match when the steel beam is attached later. Or problems such as joining hardware being remade. For this reason, construction is extremely difficult, takes time, and greatly affects the process. In the case of a reinforced concrete girder, a space is required on the building construction floor to install beam and floor formwork and temporary support materials. For this reason, the amount of excavation is larger than that of a steel-framed floor structure, which increases the cost of mountain construction. In addition, a large amount of temporary materials for the formwork and support work are required, and the number of work increases due to the increase in the number of reinforcement work, formwork work, and concrete work, resulting in a time problem.
さらに、建築計画上、支持地盤面が比較的浅い場合には、杭を無くすために支持地盤の深さまで建物の地下利用を計画する場合がある。一般的には工期的、経済的、および安全面で不合理である。  Furthermore, when the support ground surface is relatively shallow in the architectural plan, the underground use of the building may be planned to the depth of the support ground in order to eliminate piles. In general, it is unreasonable in terms of construction period, economy, and safety.
本発明は上記従来技術の不具合に鑑みてなされたもので、その目的は、地下構造物の完成後に不必要となる仮設物を基本的に省き、本体構造物で兼用することができる地下・地上構造物の施工方法を提供することである。   The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to basically eliminate unnecessary temporary structures after completion of the underground structure, and can be used as a basement structure on the ground. It is to provide a construction method for a structure.
本発明は上記目的を達成するために、地下・地上構造物の施工方法として、止水性と土圧対応の山留を構築する工程と、山留の内部を排水した後に機械式深礎工法により現場造成の杭抗を現状地盤面から支持地盤面まで掘削する工程と、支持地盤面から建物基礎底レベルまでラップルコンクリートや鉄筋を配筋してコンクリートを打設することで現場造成杭を構築する工程と、ラップルコンクリートや現場造成杭の上部に、建物本体の鉄骨柱用アンカーボルトを設置した後、建物基礎底レベルまで鉄筋コンクリートを構築する工程と、を含むものである。  In order to achieve the above-mentioned object, the present invention provides a construction method for underground and ground structures, a step of constructing a mountain retaining for waterproofing and earth pressure, and a mechanical deep foundation method after draining the interior of the mountain retaining. The site construction pile is constructed by excavating the site construction pile resistance from the current ground surface to the supporting ground surface, and placing concrete with reinforced concrete and reinforcing bars from the supporting ground surface to the building foundation bottom level. And a step of constructing reinforced concrete to the building foundation bottom level after installing anchor bolts for steel pillars of the building main body on the upper part of the wrinkle concrete and the site-built pile.
前記施工方法において、前記ラップルコンクリートや現場造成杭の上部に、建物本体の鉄骨柱用アンカーボルトを設置する工程では、建物基礎底レベルまで構築したラップルコンクリートや現場造成杭の上部を平滑にして本体の鉄骨柱用アンカーフレームを取り付け、その後、アンカーボルトを設置し、建物全体の鉄骨建て方工事の準備工事が地下最下階で完了せしめられる施工が行われ、さらに、前記アンカーボルトを設置する工程に続き、地下鉄骨柱を深礎抗内で建て方を行ない、1階部分で建方精度を確保する工程と、1階の大梁を地下鉄骨柱に接合した後、1階床組を構築するようにすることが好ましい。  In the construction method, in the step of installing the anchor bolts for the steel column of the building main body on the upper part of the wobble concrete or the site-built pile, the upper part of the building concrete pile to the bottom of the building foundation is smoothed and the main body The process of installing the anchor bolts, and then installing the anchor bolts, the construction work to complete the steel frame construction work for the entire building is completed on the lowest basement floor, and the anchor bolts are installed Continuing on, the sub-frame is built in the deep foundation, the process of ensuring the accuracy of the first-floor construction, and the first-floor girder are joined to the sub-frame, and then the first floor is built It is preferable to do so.
前記施工方法では、まず、多数の実績を有する機械式深礎で杭施工を行う。地下最下階の杭頭で地下鉄骨柱のアンカーボルトを設置して地下最下階から1階までの本体鉄骨柱を建て込み、1階鉄骨大梁を高力ボルト、または現場溶接で接合しながら床組も構築する。これらの工事は全てが本体躯体工事であり、地上躯体工事と同様に進められる施工法である。  In the construction method, first, pile construction is performed with a mechanical deep foundation having many achievements. Install anchor bolts on the subway column at the pile head on the bottom basement floor, build the main steel column from the basement floor to the first floor, and join the 1st floor steel beam with high-strength bolts or on-site welding Build a floor assembly. These constructions are all main body construction, and are the same construction methods as the ground construction.
1階床組まで完成した後、地上・地下の同時施工を開始する。地下・地上共に純鉄骨造を基本とし、柱は鉄骨鉄筋コンクリート構造も可能とする。地下工事は、地下1階の掘削から開始し、地下1階レベルの鉄骨大梁下まで掘り進める。既に精度を確保された柱に地下各階の大梁を接合して、デッキ系の床を構築し、その床組で地下1階の山留材を支持する。その後、地下各階の根切りと鉄骨系の躯体施工を繰り返して地下階構造体を構築する施工法である。  After completing the first floor assembly, simultaneous construction on the ground and underground starts. Both underground and above ground are based on pure steel structures, and the columns can be steel reinforced concrete structures. Underground construction starts from the first floor underground excavation and proceeds to the bottom of the first-floor level steel beam. The deck of each basement floor is joined to a pillar that has already been secured to build a deck-type floor, and the flooring is used to support the first floor basement. After that, it is a construction method that builds an underground floor structure by repeating root cutting of each floor and steel frame construction.
従来の施工法に対して山留支持する切梁やアースアンカーが不要になる。さらに、仮設材としての構真柱が不要となり、地下各階の床組においても、鉄骨の梁とデッキ等の乾式資材を敷き込むことで足場や支保工等の仮設物が不要となる。従来工法にはない地下構造物の柱・梁は純粋な鉄骨造で、床をデッキ系の乾式で、さらに取扱い易い資材を採用することにより簡素化した施工法である。  Cut beams and earth anchors that support the mountain retaining are not required for conventional construction methods. In addition, a construction pillar as a temporary material is not required, and a temporary structure such as a scaffolding or a support work is not required in the floor set of each basement floor by laying dry materials such as steel beams and decks. Columns and beams of underground structures that are not in the conventional construction method are pure steel structures, the floor is a deck-type dry type, and the construction method is simplified by adopting materials that are easier to handle.
地上工事は、1節の鉄骨建方工事より開始し、各節を順次に鉄骨建方工事を進めて躯体工事・仕上工事・設備工事を完成させていく施工法である。   The ground work is a construction method that starts with the steel frame construction of one section and completes the steel frame construction, finishing work, and equipment work by sequentially proceeding with the steel frame construction work for each section.
杭の完成後は、地上部を含む建物全体の鉄骨建て方に大規模な地下構造物が計画されていたとしても、地下構造物の有無に関係なく、地下最下階の基礎レベルから地上部を含む建物全体の鉄骨建て方を開始することができる。  After the pile is completed, even if a large underground structure is planned for the steel building of the entire building including the ground part, the ground part will be You can start building a steel frame for the entire building, including
地下構造物は、仮設物ではなく、本体の躯体を仮設兼用として築造することで精度が確保されるため、品質が従来の施工法よりかなり高くなる。そのことにより、無駄を省き、施工を簡素化することができるため、経済的であり、工期も短縮できる。  The accuracy of the underground structure is considerably higher than that of the conventional construction method because the accuracy is ensured by constructing the main frame as a temporary structure, not a temporary structure. As a result, waste can be eliminated and construction can be simplified, which is economical and can shorten the construction period.
さらに、特殊な能力を必要とせず、さらに実績のある施工法を柔軟にアレンジすることで簡易、安全、短期間で構築することができる。これら全てを達成することにより、環境配慮型の施工法となる。  Furthermore, it does not require special ability and can be constructed in a simple, safe and short period by flexibly arranging the construction methods with proven results. By achieving all of these, it becomes an environment-friendly construction method.
本発明の山留工事を示す断面図Sectional view showing the mountain retaining construction of the present invention 本発明の機械式深礎の掘削工事を示す断面図Sectional drawing which shows excavation work of the mechanical deep foundation of this invention 本発明のラップルコンクリート、または現場造成杭の鉄筋コンクリート工事を示す断面図Sectional drawing which shows the reinforced concrete construction of the lapple concrete of the present invention or the field construction pile 本発明のアンカーボルト設置工事を示す断面図Sectional drawing which shows the anchor bolt installation construction of this invention 本発明の地下の鉄骨工事を示す断面図Sectional drawing which shows the underground steel construction of this invention 本発明の地下1階の掘削・躯体工事と地上1節の躯体工事を示す断面図Sectional drawing which shows excavation and frame construction of the first basement of the present invention and frame construction of the first section of the ground 本発明の地下2階の掘削・躯体工事と地上2節の躯体工事を示す断面図Sectional drawing which shows excavation and frame construction of the second basement floor of the present invention and two-level groundwork construction 本発明の地上3階の掘削・基礎工事と地上3節の躯体工事を示す断面図Sectional drawing showing excavation / foundation work on the third floor above the ground and the three-section skeleton work of the present invention 本発明の地下の土圧壁工事を示す断面図Sectional drawing showing underground earth pressure wall construction of the present invention
以下、本発明の実施の形態について図面を用いて説明する。図1は、本実施の形態の山留工程を構成する各項目の断面図を示す。図1において、符号1は地下・地上構造物(以下、単に構造物という)が建設される場所の地下にある地盤であり、強固な岩盤などから成る。2は掘削地盤であり、構造物の地下部分を施工するために掘削される。3は現状地盤面であり、構造物の1階床とほぼ同じレベルの地表面である。4は地中下部にあって、構造物を支える支持地盤面である。5は地下部分において構造物の周囲の土砂がくずれるのを支える山留である。6は構造物の施工開始の初期段階で構造物の施工箇所の地下の水を抜き取るための排水杭である。10は施工される構造物の最下部位となる建物基礎底レベルである。  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a cross-sectional view of each item constituting the mountain-holding process of the present embodiment. In FIG. 1, reference numeral 1 denotes a ground in the basement of a place where an underground / ground structure (hereinafter simply referred to as a structure) is constructed, and includes a solid rock. Reference numeral 2 denotes excavation ground, which is excavated to construct an underground part of the structure. 3 is the current ground surface, which is the ground surface at the same level as the first floor of the structure. Reference numeral 4 denotes a supporting ground surface which is located in the lower part of the ground and supports the structure. Reference numeral 5 denotes a mountain retaining that supports the earth and sand surrounding the structure in the underground part. Denoted at 6 is a drainage pile for draining underground water from the construction site at the initial stage of construction. 10 is a building foundation bottom level which is the lowest part of the structure to be constructed.
施工開始に当っては、地盤1に止水効果のある材料(コンクリートなど)を用いて止水生と土圧対応の山留5を現状地盤面3から打込み、支持地盤面4より以深まで構築する。また、山留5により囲まれた範囲の内側に排水抗6を山留5と同程度の深さまたはそれぞれより深い位置まで掘り進め、完成したら現状地盤面3から支持地盤面4までの範囲に含まれた水を排水する。  At the start of construction, using a water-stopping material (concrete, etc.) on the ground 1, the mountain stay 5 corresponding to still water and earth pressure is driven from the current ground surface 3 and constructed to a deeper depth than the supporting ground surface 4. . Further, the drainage tank 6 is dug to the same depth as the hillhead 5 or deeper than the hillhead 5 inside the range surrounded by the hills 5, and when completed, within the range from the current ground surface 3 to the support ground surface 4. Drain the contained water.
図2は、建物柱位置における機械式深礎工法による掘削工程を示す断面図である。この機械式深礎工法により、建物柱位置において現状地盤面3から支持地盤面4まで杭抗7を掘進め、建物基礎底レベル10から支持地盤面4までの地盤が構造物を支持可能な強さを持つ支持層であることを確認する。杭抗7は内部に作業者が入って支持層の確認及び基礎工事が行える程度の大きさの平面面積を有する。  FIG. 2 is a cross-sectional view showing an excavation process by a mechanical deep foundation method at a building column position. With this mechanical deep foundation method, pile resistance 7 is dug from the current ground surface 3 to the supporting ground surface 4 at the building column position, and the ground from the building foundation bottom level 10 to the supporting ground surface 4 is strong enough to support the structure. Confirm that the support layer has a thickness. The pile resistance 7 has a plane area large enough to allow an operator to enter inside and to check the support layer and perform foundation work.
図3は、現場造成杭の築造工程を示す断面図である。この工程では、杭抗7の掘削底が支持層であることを確認し、支持地盤面4から建物基礎底レベル10までラップルコンクリート、または現場造成杭8を構成するための鉄筋を配筋し、その後コンクリートを打設してラップルコンクリート、または現場造成杭8を形成する。なお、図3中符号9は建物最下階レベルを示す。  FIG. 3 is a cross-sectional view showing a construction process of the on-site construction pile. In this process, it is confirmed that the excavation bottom of the pile resistance 7 is a support layer, and the reinforcing bars for constructing the wrinkle concrete or the site-built pile 8 from the support ground surface 4 to the building foundation bottom level 10 are arranged, After that, concrete is placed to form the laple concrete or the field-built pile 8. In addition, the code | symbol 9 in FIG. 3 shows the lowest floor level of a building.
図4は、建物全体の鉄骨建て方の準備工程を示す断面図である。この工程では、ラップルコンクリート、または現場造成杭8が完成した後にラップルコンクリート、または杭頭部分を平滑に処理する。次に、地下の本体鉄骨柱14(後出)の建て方用アンカーフレーム13を取り付けた後にアンカーボルト11とテンプレート12を建物最下階レベル9に設置して精度を確保し建物基礎構造体Bとする。建物基礎構造体Bには建物全体を構築するための鉄骨柱の最下端が結合される。このように、杭抗7の最深部に現場造成杭8を形成し、その杭頭部分上の建物最下階レベル9に建物全体を構築するための鉄骨柱を支持する建物基礎構造体Bを設置する工法は従来には見られない本発明独自の工法である。  FIG. 4 is a cross-sectional view showing a preparation process for building a steel frame of the entire building. In this step, the wrinkle concrete or the pile head portion is processed smoothly after completion of the wrap concrete or the site-built pile 8. Next, after attaching the anchor frame 13 for erection of the underground steel column 14 (described later), the anchor bolt 11 and the template 12 are installed at the lowest floor level 9 of the building to ensure the accuracy and the building foundation structure B And The bottom end of the steel column for constructing the entire building is coupled to the building foundation structure B. Thus, the building foundation structure B which supports the steel column for constructing the whole building in the building bottom floor level 9 on the pile head part is formed in the site construction pile 8 at the deepest part of the pile stake 7. The installation method is a method unique to the present invention that has not been seen in the past.
図5は、建物全体の鉄骨建て方を開始する工程を示す断面図である。この工程では、まず、現状地盤面3より上方の工事が始まっていない時点で、地下鉄骨柱14を建物最下階レベル9のアンカーボルト11に合わせて建て込む。この地下鉄骨柱14は、建物の地下が何階分あろうが、建物最下階レベル9から現状地盤面3よりも上に到達するまで杭抗7の中に一気に建て込まれる。地下の高さ寸法が大きい場合は鉄骨を継ぎ組みして建て込む。  FIG. 5 is a cross-sectional view showing a process of starting the steel building method for the entire building. In this process, first, when the construction above the current ground surface 3 has not started, the subway skeleton 14 is built in accordance with the anchor bolt 11 at the level 9 on the lowest floor of the building. This sub-frame 14 is built in piles 7 at a stretch from the lowest level 9 of the building up to the current ground level 3 regardless of how many floors the basement of the building is. If the height of the basement is large, it is built with steel frames.
次に、現状地盤面3よりも上に到達した地下鉄骨柱14に1階レベルの鉄骨大梁15を高力ボルト、または現場溶接で接合する。この鉄骨大梁15は仮設用の梁部材ではなく建物本体の1階レベルを構成する梁である。この鉄骨大梁15を接合した後、鉄骨小梁を含む1階床組16を構築する。この1階床組16の構築は、鉄骨小梁およびデッキ系の床により構築するか、または乾式のハーフPC版等を敷き込むことにより構築するか、或いは鉄筋を配筋してコンクリートを打設することにより構築するなど種々の方法がある。これにより建物本体の1階部分が出来上がる。  Next, the steel beam 15 of the first floor level is joined to the subway column 14 reaching above the current ground surface 3 by high-strength bolts or field welding. The steel beam 15 is not a temporary beam member but a beam constituting the first floor level of the building body. After joining the steel beam 15, a first floor set 16 including the steel beam is constructed. The first floor 16 is constructed with a steel beam and deck floor, or by laying a dry-type half-PC plate or the like, or by placing reinforcing bars and placing concrete. There are various methods such as building by doing so. This completes the first floor of the building body.
図6は、地上・地下構造物における同時施工の開始する工程を示す断面図である。この工程からは、地下・地上構造物の同時施工(或いは並行施工)が行われる。図5の工程における1階部分の施工終了に続いて、地下工事については、現状地盤面3から下方へ、地下1階分の地盤を掘削して地下1階の鉄骨大梁17を地下鉄骨柱14に接合する。この鉄骨大梁17も建物本体の地下1階レベルを構成する梁である。この鉄骨大梁17を接合した後、鉄骨小梁を含む地下1階床組18を構築する。これにより建物本体の地下1階部分が出来上がる。なお、地下1階床組18は端部が地下鉄骨柱14に接合して終端するのではなく、地下鉄骨柱14からさらに外方へ延びた支え部18aを有し、その先端が山留5に突き当たるように鉄筋を配筋してコンクリートを打設することにより構築される。これにより、この地下1階床組18で山留5を支持する。  FIG. 6 is a cross-sectional view showing a process of starting simultaneous construction in the above-ground and underground structures. From this process, simultaneous construction (or parallel construction) of underground and ground structures is performed. Following the completion of the construction of the first floor portion in the process of FIG. 5, for underground construction, the ground for the first floor underground is excavated downward from the current ground surface 3 to connect the steel beam 17 on the first underground floor to the subway frame 14. To join. The steel beam 17 is also a beam constituting the first basement level of the building body. After joining the steel beam 17, the first basement floor set 18 including the steel beam is constructed. This completes the first basement of the building. The basement 1 floor set 18 does not end with the end joined to the subway skeleton 14, but has a support portion 18 a extending further outward from the subway skeleton 14, the tip of which is a mountain 5 It is constructed by placing rebars and placing concrete so that it hits. As a result, the base 5 is supported by the basement 18 in the basement.
地上工事は上記地下工事と同時に施工される。この地上工事では、地下鉄骨柱14の上に鉄骨柱19を取り付け(或いは継ぎ足し)て地上部1節(図6中S1で示す)の躯体工事を開始する。地上部1節の「節」は、本実施の形態で用いられる鉄骨柱の規格長さを基準とした長さ単位を表す。本実施の形態では1節で2階分の躯体工事が行われる。地上部1節の各階の鉄骨大梁20を鉄骨柱19に接合した後、鉄骨小梁を含む各階の床組21を構築する。  Ground work will be carried out simultaneously with the above underground work. In this ground work, a steel pillar 19 is attached (or added) on the subway bone pillar 14, and the construction of the ground part 1 section (indicated by S1 in FIG. 6) is started. The “node” in the first section above the ground represents a length unit based on the standard length of the steel column used in the present embodiment. In the present embodiment, the construction for the second floor is performed in section 1. After joining the steel beam 20 on each floor of the first section of the ground to the steel column 19, a floor set 21 on each floor including the steel beam is constructed.
図7は、図6に続く地上・地下構造物における同時施工の工程を示す断面図である。地下工事は、地下1階の躯体の終了に続き、地下2階を掘削して地下2階の鉄骨大梁22を地下鉄骨柱14に接合する。その後、鉄骨小梁を含む地下1階床組23を構築する。地下2階床組23もまた端部が地下鉄骨柱14に接合して終端するのではなく、地下鉄骨柱14からさらに外方へ延びた支え部23aを有し、その先端が山留5に突き当たるように構築される。これにより、この地下2階床組23で山留5を支持する。  FIG. 7 is a cross-sectional view showing a process of simultaneous construction in the above-ground and underground structures following FIG. In the underground work, the second basement floor is excavated and the steel beam 22 on the second basement floor is joined to the subframe 14 following the completion of the first basement frame. Thereafter, a basement 1st floor set 23 including a steel beam is constructed. The second-floor floor set 23 also has a support portion 23a that extends further outward from the sub-frame 14 instead of being joined to the sub-frame 14 at the end. Constructed to hit. As a result, the base 2 is supported by the basement 2 of the second floor.
地上部は、地上部2節(図7中S2で示す)の躯体工事を開始する。鉄骨柱19の上に地上部2節に対応する鉄骨柱24を取り付け、地上部2節の各階大梁25を鉄骨柱24に接合する。その後、鉄骨小梁を含む各階の床組26を構築する。  The ground part starts the construction of the ground part 2 section (indicated by S2 in FIG. 7). A steel column 24 corresponding to the ground section 2 nodes is attached on the steel column 19, and each floor large beam 25 of the ground section 2 nodes is joined to the steel column 24. Thereafter, the floor set 26 of each floor including the steel beam is constructed.
図8は、図7に続く地上・地下構造物における同時施工の工程を示す断面図である。地下工事は、地下2階の躯体の終了に続き、地下最下階を掘削して基礎躯体工事27を構築する。さらに、この基礎躯体工事で山留5を支持する。  FIG. 8 is a cross-sectional view showing the process of simultaneous construction in the above-ground and underground structures following FIG. In the underground work, the foundation structure 27 is constructed by excavating the lowest basement floor following the completion of the second floor structure. Furthermore, Yamadome 5 is supported by this foundation frame construction.
地上部は、地上部3節以上、すなわち、中間節の躯体工事を開始して地上部2節におけると同様の躯体工事を地上部各節で繰り返し構築する。図8では地上部n節(図8中Snで示す)の躯体工事を行っているものとする。この工事では地上部n節に対応する鉄骨柱28を取り付け、地上部n節の各階大梁29を鉄骨柱28に接合する。この地上部n節はまだ最終節(最上階及び屋上を含む)ではなく、中間の節である。その後、鉄骨小梁を含む各階の床組30を構築して地上最終節工事へ移る。  The ground section starts the construction of the ground section 3 or more, that is, the intermediate section, and repeats the construction of the same construction as the ground section 2 in each section of the ground section. In FIG. 8, it is assumed that the groundwork n section (indicated by Sn in FIG. 8) is being constructed. In this construction, a steel column 28 corresponding to the ground section n-node is attached, and each floor large beam 29 of the ground section n-section is joined to the steel column 28. This n section above ground is not the final section (including the top floor and the rooftop), but an intermediate section. After that, the floor assembly 30 on each floor including the steel beam is built and the ground final section construction is started.
図9は、地上・地下構造物における同時施工の最終工程を示す断面図である。地下工事は、基礎躯体工事27を終了して最下階の土圧壁31の躯体工事を構築する。この工事では、まず地下最下階においてコンクリート打設により土圧壁31の躯体工事を行い、これが終了したら、次に地下2階について土圧壁31の躯体工事を行うというように、順次、地下最下階から地下1階まで土圧壁31の躯体工事を構築して地下構造物の施工を完了する。  FIG. 9 is a cross-sectional view showing the final process of simultaneous construction in the above-ground and underground structures. In the underground work, the foundation work 27 is completed and the work for the earth wall 31 on the lowest floor is constructed. In this construction, first, the construction of the earth pressure wall 31 is carried out by placing concrete on the lowermost floor of the basement, and when this is completed, the construction of the earth pressure wall 31 is next carried out on the second basement floor. The construction of the earth pressure wall 31 is constructed from the lowest floor to the first basement floor, and the construction of the underground structure is completed.
地上部は、最終節(図9中Seで示す)の躯体工事を開始して最上階及び屋上までを構築する。この工事では最終節に対応する鉄骨柱32を取り付け、最終節の各階大梁33を鉄骨柱32に接合する。その後、鉄骨小梁を含む各階の床組34を構築して地上工事を完了する。  The above-ground part starts the construction of the last section (indicated by Se in FIG. 9) and constructs the top floor and the rooftop. In this construction, the steel column 32 corresponding to the final node is attached, and the respective large beams 33 of the final node are joined to the steel column 32. Thereafter, the floor set 34 of each floor including the steel beam is constructed to complete the ground work.
本発明の施工方法では、杭の完成後は、地上部を含む建物全体の鉄骨建て方に大規模な地下構造物が計画されていたとしても、地下構造物の有無に関係なく、地下最下階の杭頭レベルから地上部を含む建物全体の鉄骨建て方を開始することができることにより、無駄を省き、施工を簡素化することができるため、経済的であり、工期も短縮でき、有用である。  In the construction method of the present invention, after completion of the pile, even if a large underground structure is planned for the steel frame construction method of the entire building including the ground part, the bottom of the underground Since it is possible to start the steel building method for the entire building including the above-ground part from the pile head level of the floor, it is possible to save waste and simplify the construction. is there.
1 地盤
2 掘削地盤
3 現状地盤面
4 支持地盤面
5 山留
6 排水抗
7 機械式深礎抗
8 鉄筋コンクリート杭
9 建物最下階レベル
10 建物基礎底レベル
11 アンカーボルト
12 テンプレート
13 アンカーフレーム
14 地下鉄骨柱
15 1階鉄骨大梁
16 1階床組
17 地下1階 鉄骨大梁
18 地下1階 床組
19 地上1節 鉄骨柱
20 地上1節 各階鉄骨大梁
21 地上1節 各階床組
22 地下2階 鉄骨大梁
23 地下2階 床組
24 地上2節 鉄骨柱
25 地上2節 各階鉄骨大梁
26 地上2節 各階床組
27 基礎構造
28 地上N節 各階鉄骨柱
29 地上N節 各階鉄骨大梁
30 地上N節 各階床組
31 地下各階 土圧壁
32 地上最終節 各階鉄骨柱
33 地上最終節 各階鉄骨大梁
34 地上最終節 各階床組
1 Ground 2 Excavation ground
3 Current ground surface
4 Support ground surface
5 Yamadome
6 Drainage resistance
7 Mechanical foundation
8 Reinforced concrete pile
9 Building bottom level
10 Building foundation bottom level
11 Anchor bolt
12 templates
13 Anchor frame
14 Subway pillars
15 1st floor steel beam
16 1st floor
17 B1F steel beam
18 B1F Floor set
19 Ground Section 1 Steel Column
20 Section 1 above the ground
21 Section 1 above the ground
22 Basement 2 Steel beams
23 Basement 2nd floor
24 Section 2 above ground
25 Section 2 above ground level steel beams
26 Section 2 above ground
27 Foundation structure
28 Ground N section Steel column on each floor
29 Ground N section Steel beams
30 Ground N section Floor set
31 Underground floor Earth wall
32 Ground Section on each floor
33 Ground final section Steel beams on each floor
34 Ground Section on each floor

Claims (5)

  1. 止水生と土圧対応の山留を構築する工程と、
    山留の内部を排水した後に機械式深礎工法により現場造成の杭抗を現状地盤面から支持地盤面まで掘削する工程と、
    支持地盤面から建物基礎底レベルまでラップルコンクリート、または鉄筋を配筋してコンクリートを打設することで現場造成杭を構築する工程と、
    ラップルコンクリート、または現場造成杭の上部に、建物本体の鉄骨柱用アンカーボルトを設置した後、建物基礎底レベルまで鉄筋コンクリートを構築する工程と、
    を含む地下・地上構造物の施工方法。
    The process of building a mountain stop for water pressure and earth pressure
    After draining the interior of the Yamadome, excavating the piles created on site by the mechanical deep foundation method from the current ground surface to the supporting ground surface,
    Constructing a site-built pile by placing concrete from the supporting ground surface to the floor of the building foundation by placing concrete with reinforced concrete or reinforcing bars;
    The process of constructing reinforced concrete up to the building foundation bottom level after installing anchor bolts for steel pillars of the main body of the building body on the top of the lapple concrete or site-built pile,
    Construction method for underground and ground structures including
  2. 前記ラップルコンクリート、または現場造成杭の上部に、建物本体の鉄骨柱用アンカーボルトを設置する工程では、建物基礎底レベルまで構築した現場造成杭の杭頭を平滑にして本体の鉄骨柱用アンカーフレームを取り付け、その後、アンカーボルトを設置し、建物全体の鉄骨建て方工事の準備工事が地下最下階で完了せしめられる施工が行われ、さらに、
    前記アンカーボルトを設置する工程に続き、地下鉄骨柱を深礎抗内で建て方を行ない、1階部分で建方精度を確保する工程と、
    1階の大梁を地下鉄骨柱に接合した後、1階床組を構築することを特徴とする請求項1記載の地下・地上構造物の施工方法。
    In the process of installing the anchor bolts for the steel column of the building main body on the upper part of the above-mentioned wrinkle concrete or the site-built pile, the pile head of the field-built pile built up to the building foundation bottom level is smoothed and the anchor frame for the steel column of the main body After that, the anchor bolts were installed, and the construction work to complete the steel frame construction work for the entire building was completed on the bottom basement floor,
    Following the step of installing the anchor bolt, the sub-frame is built in a deep foundation, and the construction accuracy is secured on the first floor portion;
    2. The construction method for an underground / ground structure according to claim 1, wherein a first-floor set is constructed after joining the first-floor girder to the subway frame.
  3. 前記、請求項2の工程に続き、
    地下工事として、最初に地下1階の掘削工事を行い、次に、地下全階で完成している本体鉄骨柱に地下1階の鉄骨大梁を地下鉄骨柱に接合し、さらに地下1階床組を地価鉄骨柱よりも外方へ突出して構築し、その床組で地下1階の山留材を支持する施工を行い、
    同時に地上工事として、1節の鉄骨柱に各階の鉄骨大梁を接合した後、各階の床組を構築することにより、地下・地上同時施工を行うことを特徴とする地下・地上構造物の施工方法。
    Following the process of claim 2,
    As the underground work, first excavation work is performed on the first basement floor, and then the main steel frame column completed on the entire basement floor is joined with the steel beam on the first basement floor to the subway frame, and then the first floor basement structure. Is constructed to protrude outward from the land-valued steel column, and the floor assembly is used to support the mountain timber on the first basement floor.
    At the same time, as a ground work, after the steel beam of each floor is joined to the steel column of one section, the floor and ground structure is constructed simultaneously by constructing the floor set of each floor. .
  4. 地下工事では、地下各階において地下全階で完成している本体鉄骨柱に対し、地下1階と同様に地下各階の鉄骨大梁を地下鉄骨柱に接合した後、地下各階の床組を構築し、
    同時に、地上工事では、鉄骨工事を2節以上の鉄骨柱に各階の鉄骨大梁を接合した後、各階の床組を構築することを特徴とする請求項3記載の地下・地上構造物の施工方法。
    In the underground work, the main body steel pillars completed on all basements in each basement floor are joined to the subway pillars in the same way as the first basement floor, and then the floor structure of each basement floor is constructed.
    At the same time, in the ground work, after the steel frame work is joined to the steel pillars of two or more sections, the steel beam of each floor is joined, and then the floor structure of each floor is constructed. .
  5. 地下・地上共に各階の鉄骨工事・床工事が完了した後、地下工事では、基礎工事である地中梁等の最下階躯体を施工することで山留材の最下点を支持し、土圧壁を最下階より構築し、下の階より順次地下1階まで地下躯体工事を完成させる一方、
    地上工事では、床のコンクリート打設を各階構築し、躯体工事を完成させ、順次仕上工事、設備工事を工程に合わせていくことを特徴とする請求項4記載の地下・地上構造物の施工方法。
    After the steelwork and floor work on each floor is completed for both the underground and the ground, in the underground work, the lowest point of the mountain retaining material is supported by constructing the bottom floor frame such as underground beams that are the foundation work, While constructing the pressure wall from the lowest floor and completing the underground frame work from the lower floor to the first basement,
    The method for constructing an underground / ground structure according to claim 4, characterized in that in the ground construction, floor concrete placement is constructed on each floor, the frame construction is completed, and finishing work and facility work are sequentially adapted to the process. .
JP2010258921A 2010-11-19 2010-11-19 Method for constructing underground and aboveground structure Pending JP2012107479A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104153390A (en) * 2014-08-28 2014-11-19 刘卡丁 Method for constructing ultra-large underground reinforced concrete frame structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104153390A (en) * 2014-08-28 2014-11-19 刘卡丁 Method for constructing ultra-large underground reinforced concrete frame structure

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