JP6243779B2

JP6243779B2 - Clean room structure and clean room construction method

Info

Publication number: JP6243779B2
Application number: JP2014070035A
Authority: JP
Inventors: 山中　一克; 一克山中; 孝信望月; 昌明林; 良太郎石橋; 弘高小西; 貴志三谷; 三男浅野; 正杉坂
Original assignee: Takenaka Corp
Current assignee: Takenaka Corp
Priority date: 2014-03-28
Filing date: 2014-03-28
Publication date: 2017-12-06
Anticipated expiration: 2034-03-28
Also published as: JP2015190262A

Description

本発明は、クリーンルーム構造及びクリーンルーム構築方法に関するものであり、より詳細には、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に増築構造体を構築し、壁面及び天井面によって画成されたクリーンルームを屋内大空間に形成するクリーンルーム構造及びクリーンルーム構築方法に関するものである。 The present invention relates to a clean room structure and a clean room construction method, and more specifically, constructs an extension structure in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and includes a wall surface and a ceiling surface. The present invention relates to a clean room structure and a clean room construction method for forming a defined clean room in a large indoor space.

過去に建設された比較的大規模な工場、倉庫等の既設建築物においては、近年の経済事情又は需要の変化や、技術の進歩又は変化等により遊休化したものも少なくなく、このような既設建築物を改修して有効活用する方策又は技術が、近年殊に重視されている。この種の事例として、例えば、大規模な遊休工場等の既設建築物を精密機器、電子機器、電子デバイス、燃料電池、太陽光パネル等の製造工場又は生産工場として有効活用すべく、クリーンルームを既設建築物の屋内大空間に構築する既設建築物の改修工事が挙げられる。 Many existing buildings such as relatively large factories and warehouses constructed in the past have been idle due to changes in recent economic circumstances or demand, technological advances or changes, etc. In recent years, particular importance has been placed on measures or techniques for renovating and effectively utilizing buildings. As an example of this type, for example, a clean room has already been established in order to effectively use existing buildings such as large-scale idle factories as manufacturing or production factories for precision equipment, electronic equipment, electronic devices, fuel cells, solar panels, etc. One example is renovation of an existing building that is built in a large indoor space.

このようなクリーンルームの構築に応用可能な技術として、本出願人は、建物内の大空間クリーンルーム内に区画ユニットを構築し、この区画ユニットによって比較的小規模のクリーンルームを大空間クリーンルーム内に構築するクリーンルーム構築方法を特開2011−257018号公報及び特開2011−257019号公報において提案している。同公報に記載されたクリーンルーム構築方法においては、大空間クリーンルーム内に複数の小規模クリーンルームが構築され、小規模クリーンルームの上側に形成された連続空間が空調空気流動域として用いられる。このような複式又は複合的クリーンルームの構成によれば、天井裏給気プレナムチャンバ及び床下還気チャンバを省略し、これにより、建物の階高を低減する建築設計を採用することが可能となる。 As a technology applicable to the construction of such a clean room, the present applicant constructs a partition unit in a large space clean room in a building, and a relatively small clean room is built in the large space clean room by this partition unit. A clean room construction method is proposed in Japanese Patent Application Laid-Open Nos. 2011-257018 and 2011-257019. In the clean room construction method described in the publication, a plurality of small clean rooms are constructed in a large space clean room, and a continuous space formed above the small clean room is used as an air-conditioned air flow region. According to the configuration of such a duplex or complex clean room, it is possible to omit the ceiling back air supply plenum chamber and the underfloor return air chamber, thereby adopting an architectural design that reduces the floor height of the building.

特開2011−257018号公報JP 2011-257018 A 特開2011−257019号公報JP 2011-257019

比較的小規模のクリーンルーム構造体を既設建築物の屋内空間に構築する場合、上記区画ユニットの構成を応用して既設建築物の屋内空間にクリーンルームを構築することが可能であると考えられる。しかし、精密機器等の製造工場又は生産工場として使用されるクリーンルームは、一般に、比較的大規模の連続空間を要するので、床面積が大きい大規模クリーンルームを既設建築物の屋内空間に構築しなければならない。このような大規模クリーンルームを既設建築物の大規模屋内空間に構築する場合、クリーンルームの天井構造体は、その水平支点間距離又は水平支持間隔が増大するので、比較的高剛性又は重厚な鋼構造骨組を既設建築物の屋内空間に構築する必要が生じる。 When constructing a relatively small clean room structure in an indoor space of an existing building, it is considered possible to construct a clean room in the indoor space of the existing building by applying the configuration of the partition unit. However, a clean room used as a manufacturing plant or a production plant for precision instruments generally requires a relatively large continuous space. Therefore, a large clean room with a large floor area must be constructed in the indoor space of an existing building. Don't be. When constructing such a large-scale clean room in a large-scale indoor space of an existing building, the ceiling structure of the clean room has a relatively high rigidity or heavy steel structure because the distance between the horizontal fulcrums or the horizontal support interval increases. It is necessary to construct the frame in the indoor space of the existing building.

このような鋼構造骨組を有する比較的大規模なクリーンルームにおいては、柱のスパンが比較的大スパン（例えば、１０ｍ以上のスパン）に設定される結果、梁及び柱の構造断面が大形化し、従って、梁及び柱の自重が増大するので、地震時に比較的大きな曲げモーメントや鉛直反力が柱の柱脚部に作用する。このような柱脚部の曲げモーメントを補償すべく、既存の床構造体を補強し、或いは、既存の床構造体に基礎を新設又は増設する必要が生じるが、軽微な床構造体の補強や小形基礎の新設又は増設で足りる場合を除き、既存の床構造体の補強や基礎の新設又は増設は、極めて困難である。 In a relatively large-scale clean room having such a steel structure, the column span is set to a relatively large span (for example, a span of 10 m or more). Therefore, since the weight of the beam and the column increases, a relatively large bending moment or vertical reaction force acts on the column base of the column during an earthquake. In order to compensate for the bending moment of the column base, it is necessary to reinforce the existing floor structure, or to newly install or add a foundation to the existing floor structure. Except when it is sufficient to newly install or add a small foundation, it is extremely difficult to reinforce an existing floor structure or newly install or add a foundation.

また、所定の床面積、例えば、１５００ｍ^２以上の床面積の大規模なクリーンルームを既設建築物内に構築する場合、クリーンルーム構造体を囲む既設建築物の既存部分に対してクリーンルームを防火区画する必要が生じる。しかし、工場や倉庫等の如く階高が高い既設建築物（例えば、階高５ｍ以上の既設建築物）においてクリーンルーム構造体を防火区画する場合、極めて大きな高さの防火区画壁（例えば、高さ５ｍ以上の防火区画壁）を新設しなければならない。 In addition, when a large clean room having a predetermined floor area, for example, a floor area of 1500 m ² or more is built in an existing building, it is necessary to divide the clean room into a fire-proof zone for the existing part of the existing building surrounding the clean room structure. Occurs. However, when a clean room structure is to be fire-proofed in an existing building with a high floor height (for example, an existing building with a floor height of 5 m or more) such as a factory or a warehouse, a fire wall with an extremely large height (for example, a height) A fire prevention wall of 5m or more must be newly established.

しかし、このような壁体は、その自重が大きく、壁体を支持する鋼構造骨組の断面及び自重が増大する結果、地震時に比較的大きな曲げモーメントや鉛直反力が柱の柱脚部に作用する。これも又、既存の床構造体の補強、或いは、既存の床構造体に基礎を新設又は増設する必要性を生じさせるが、前述の如く、軽微な床構造体の補強や小形基礎の新設又は増設を除き、既存の床構造体の補強や基礎の新設又は増設は、極めて困難である。 However, such a wall has a large weight, and as a result of an increase in the cross section and weight of the steel frame that supports the wall, a relatively large bending moment or vertical reaction force acts on the column base during the earthquake. To do. This also gives rise to the need to reinforce existing floor structures or to add or add foundations to existing floor structures. Except for the expansion, it is extremely difficult to reinforce the existing floor structure and to newly install or expand the foundation.

更に、クリーンルームの空調設備又は排煙設備を構成する空調ダクト、換気ダクト、局所排気ダクト、排煙ダクト等の各種ダクトや、電気・計装設備又は給排水設備等を構成する配線・配管は、上記防火区画を形成する壁体（防火区画壁）を貫通する。ダクト及び配線・配管の防火区画壁貫通部には、防火ダンパ、排煙・防火ダンパ等が設けられ、或いは、適切な防火区画貫通部の防・耐火処理が施される。しかし、上記の如く高さが高い壁構造体によって防火区画した場合、防火ダンパ等の可動部や、配管・配線等の防火処理部が必然的に屋内上部域に配置されるので、階高が高い既設建築物においては、防火ダンパ等の点検及び維持管理が極めて困難である。 In addition, air conditioning ducts, ventilation ducts, local exhaust ducts, smoke exhaust ducts, and other various air ducts that constitute clean room air conditioning equipment or smoke exhaust equipment, and wiring and piping that make up electrical / instrumentation equipment or water supply / drainage equipment, etc. It penetrates through the wall (fire compartment wall) forming the fire compartment. Fireproof dampers, smoke exhaust / fireproof dampers, and the like are provided in the through-holes of the fire protection compartments of the ducts and wiring / piping, or appropriate fire-proof / fireproof treatment of the fire-proof compartment penetrations is performed. However, when a fire prevention section is formed by a wall structure having a high height as described above, a movable part such as a fire prevention damper and a fire prevention treatment part such as piping and wiring are inevitably disposed in the indoor upper area. In high existing buildings, inspection and maintenance of fire dampers are extremely difficult.

しかも、このような防火区画壁によって各クリーンルーム毎、或いは、一群のクリーンルーム毎に防火区画を形成した場合、屋内空間が比較的多くの防火区画壁によって区画されるので、殊に複数のクリーンルーム又はクリーンルーム群に跨がって延びる各種ダクト、配線、配管等については、防火区画貫通部毎に防火ダンパ等の設備を設け又は防・耐火処理を施す必要が生じ、或いは、防火区画壁の位置を避けるようにダクト及び配線・配管の経路を設定する必要が生じる。加えて、屋内空間全域に亘ってダクト、配線、配管等の状態を視覚的（又は映像的）且つ一元的に点検又は管理することも困難となる。 Moreover, when a fire prevention compartment is formed for each clean room or a group of clean rooms by such fire prevention compartment walls, the indoor space is partitioned by a relatively large number of fire prevention compartment walls. For various ducts, wiring, piping, etc. that extend across the group, it is necessary to install a fire damper, etc., or to provide fire prevention / fire resistance treatment for each penetration part of the fire prevention compartment, or avoid the position of the fire prevention compartment wall Thus, it is necessary to set the route of the duct and wiring / piping. In addition, it is also difficult to visually (or video) and centrally check or manage the state of ducts, wiring, piping, and the like over the entire indoor space.

本発明は、このような課題に鑑みてなされたものであり、その目的とするところは、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に比較的大規模なクリーンルームを構築するクリーンルーム構造及びクリーンルーム構築方法において、既存の床構造体の補強等を簡素化し又は省略可能にするとともに、クリーンルームの各種ダクト及び配線・配管等の施工性又は設計自由度を向上し且つその点検及び維持・管理を容易にするクリーンルーム構造及びクリーンルーム構築方法を提供することにある。
本発明は又、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に比較的大規模なクリーンルームを構築するクリーンルーム構造及びクリーンルーム構築方法において、既存の床構造体の補強等を簡素化し又は省略可能にするとともに、地震荷重に応答して柱及び梁の構造断面に作用する応力を低減し、これにより、鋼製骨組の構造断面を縮小し、鋼製骨組を軽量化することができるクリーンルーム構造及びクリーンルーム構築方法を提供することを目的とする。
The present invention has been made in view of such problems, and its purpose is to construct a relatively large clean room in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more. in a clean room structure Zo及 beauty clean room construction method of, as well as the existing simplifies reinforcement or the like of the floor structure or optional, and improves the workability or the degree of freedom in designing the various ducts and the like wires and pipes clean room that An object of the present invention is to provide a clean room structure and a clean room construction method that facilitate inspection, maintenance, and management.
The present invention also simplifies the reinforcement of an existing floor structure in a clean room structure and a clean room construction method for constructing a relatively large clean room in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more. And reducing the stress acting on the structural section of columns and beams in response to seismic loads, thereby reducing the structural section of the steel frame and reducing the weight of the steel frame. An object is to provide a clean room structure and a clean room construction method.

上記目的を達成すべく、本発明は、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に構築された増築構造体からなり、壁面及び天井面によって画成されたクリーンルームを屋内大空間に形成するクリーンルーム構造において、
前記増築構造体は、該構造体を構築すべき床構造体と、上階の床構造体又は屋根構造体を構成する横架材とに柱脚部及び柱頭部を夫々接合した鋼構造の柱と、前記柱の中間レベルに接合した鋼構造の梁と、前記梁に懸吊され、該梁の下側に延在し且つ所定の耐火時間の耐火性能を有する耐火構造の天井構造体と、前記床構造体上に建込まれ且つ所定の耐火時間の耐火性能を有する耐火構造の壁構造体とを有し、
前記壁構造体及び天井構造体は、互いに連接してクリーンルームを画成するとともに、上階の床構造体又は屋根構造体から離間した防火区画を形成することを特徴とするクリーンルーム構造を提供する。 In order to achieve the above object, the present invention comprises an extension structure constructed in a large indoor space of an existing building having a floor height or ceiling height of 5 m or more, and a clean room defined by a wall surface and a ceiling surface is installed indoors. In the clean room structure formed in a large space,
The extension structure is a steel structure column in which a column base and a column head are respectively joined to a floor structure to be constructed and a horizontal member constituting an upper floor structure or a roof structure. A steel structure beam joined to an intermediate level of the column; a ceiling structure of a fire-resistant structure that is suspended from the beam, extends under the beam, and has a fire-resistant performance for a predetermined fire-resistant time; A wall structure of a fireproof structure built on the floor structure and having a fireproof performance for a predetermined fireproof time;
The wall structure and the ceiling structure are connected to each other to define a clean room, and provide a clean room structure characterized by forming a fire prevention section separated from an upper floor structure or a roof structure.

本発明は又、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に増築構造体を構築し、壁面及び天井面によって画成されたクリーンルームを屋内大空間に形成するクリーンルーム構築方法において、
前記増築構造体を構築すべき床構造体と、上階の床構造体又は屋根構造体を構成する横架材とに鋼構造の柱の柱脚部及び柱頭部を夫々接合するとともに、前記柱の中間レベルに鋼構造の梁を接合し、
所定の耐火時間の耐火性能を有する耐火構造の天井構造体を前記梁に懸吊して、該梁の下側に延在する天井構造体を形成するとともに、所定の耐火時間の耐火性能を有する耐火構造の壁構造体を前記床構造体上に建込み、
前記壁構造体及び天井構造体によってクリーンルームを画成するとともに、上階の床構造体又は屋根構造体から離間した防火区画を前記壁構造体及び天井構造体によって形成することを特徴とするクリーンルーム構築方法を提供する。 The present invention also provides a clean room construction method for constructing an extension structure in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and forming a clean room defined by the wall surface and ceiling surface in the indoor large space. In
The column base of the steel structure column and the column head are respectively joined to the floor structure to construct the extension structure and the horizontal member constituting the upper floor structure or roof structure, and the column Join steel beam to the middle level of
A ceiling structure having a fireproof structure with a predetermined fireproof time is suspended from the beam to form a ceiling structure extending below the beam, and has a fireproof performance with a predetermined fireproof time. Building a fire-resistant wall structure on the floor structure,
A clean room is defined by the wall structure and the ceiling structure, and a fire prevention section separated from the floor structure or the roof structure on the upper floor is formed by the wall structure and the ceiling structure. Provide a method.

本発明の上記構成によれば、増設構造体に作用する地震荷重（地震力）は、各階の中間レベルにおいて増設構造体の柱に作用し、増築構造体を構築すべき床構造体と、上階の床構造体又は屋根構造体とに分散する。従って、増築構造体の地震荷重により柱の柱脚部に作用する曲げモーメント等が低減するので、大掛りな既存の床構造体の補強や、大規模な基礎の増設又は新設等を行うことなく、柱の柱脚部を既存の床構造体によって支持することができる。また、増設構造体の天井構造体によってクリーンルームが防火区画されるので、天井構造体と上階の床構造体又は屋根構造体との間に形成された屋内上部空間が、既存の屋内空間に開放される。このため、各種ダクト及び配線・配管等の施工性又は設計自由度が向上するとともに、天井構造体を貫通する各種ダクト及び配線・配管等を既存の屋内空間の側から比較的容易に点検し又は維持・管理することが可能となる。 According to the above configuration of the present invention, the seismic load (seismic force) acting on the extension structure acts on the pillar of the extension structure at the intermediate level of each floor, and the floor structure on which the extension structure is to be constructed, Dispersed in the floor structure or roof structure of the floor. Therefore, the bending moment acting on the column base of the column due to the seismic load of the extension structure is reduced, so there is no need to reinforce a large existing floor structure or add or install a large-scale foundation. The column base can be supported by the existing floor structure. In addition, since the clean room is fire-proofed by the ceiling structure of the additional structure, the indoor upper space formed between the ceiling structure and the floor structure or roof structure on the upper floor is opened to the existing indoor space. Is done. For this reason, the workability or design flexibility of various ducts and wiring / piping is improved, and various ducts, wiring / piping, etc. penetrating the ceiling structure are relatively easily inspected from the side of the existing indoor space or It becomes possible to maintain and manage.

好ましくは、上記柱の下端部（柱脚部）は、ピン接合構造又は半固定接合構造によって床構造体に係留され、上記柱の上端部は、ピン接合構造によって上階の床梁又は屋根梁に連結される。このような構成によれば、地震荷重により柱脚部に作用する曲げモーメントを実質的に無視し又は大幅に軽減し得るので、既存の床構造体によって柱脚部を容易に支持することができる。なお、半固定接合構造は、回転バネの構造を柱脚部に仮定して柱脚部の回転剛性を設定することにより、柱脚部の設計を安全側に設計する構造設計法である。このような柱脚部の回転剛性の設定は既に知られているので、半固定接合構造を柱脚部に適用した構造設計法に関する更なる詳細な説明は、省略する。 Preferably, the lower end portion (column base portion) of the column is anchored to the floor structure by a pin joint structure or a semi-fixed joint structure, and the upper end portion of the column is an upper floor beam or roof beam by the pin joint structure. Connected to According to such a configuration, the bending moment acting on the column base due to the seismic load can be substantially ignored or greatly reduced, so that the column base can be easily supported by the existing floor structure. . The semi-fixed joint structure is a structural design method in which the design of the column base is designed to be safe by setting the rotational rigidity of the column base assuming the structure of the rotation spring as the column base. Since the setting of the rotational rigidity of the column base is already known, further detailed description regarding the structural design method in which the semi-fixed joint structure is applied to the column base will be omitted.

更に好ましくは、上記梁と上記柱とは、ピン接合構造によって接合される。このような構成によれば、地震荷重に応答した曲げ応力が実質的に梁に作用せず、従って、梁を軽量化し、鋼構造骨組に作用する地震荷重を更に低減することができる。
このような構造的観点より、本発明は、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に構築された増築構造体からなり、壁面及び天井面によって画成されたクリーンルームを屋内大空間に形成するクリーンルーム構造において、
前記増築構造体は、該構造体を構築すべき床構造体と、上階の床構造体又は屋根構造体を構成する横架材とに柱脚部及び柱頭部を夫々接合した鋼構造の柱と、前記柱の中間レベルに接合した鋼構造の梁と、前記梁に懸吊され、該梁の下側に延在する天井構造体と、前記床構造体上に建込まれた壁構造体とを有し、
前記壁構造体及び天井構造体は、互いに連接してクリーンルームを画成し、
前記柱の柱脚部は、ピン接合構造又は半固定接合構造によって床構造体に係留され、前記柱の柱頭部は、ピン接合構造によって前記横架材に連結され、前記梁と前記柱とは、ピン接合構造によって接合されることを特徴とするクリーンルーム構造を提供する。
本発明は又、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に増築構造体を構築し、壁面及び天井面によって画成されたクリーンルームを屋内大空間に形成するクリーンルーム構築方法において、
前記増築構造体を構築すべき床構造体に対し、鋼構造の柱の柱脚部をピン接合構造又は半固定接合構造によって係留するとともに、上階の床構造体又は屋根構造体を構成する横架材に対し、前記柱の柱頭部をピン接合構造によって接合し、
前記柱の中間レベルに鋼構造の梁を配置し、該梁の端部と前記柱とをピン接合構造によって接合し、
天井構造体を前記梁に懸吊して、該梁の下側に延在する天井構造体を形成するとともに、壁構造体を前記床構造体上に建込んでクリーンルームを画成し、上階の床構造体又は屋根構造体から離間したクリーンルーム構造体を前記壁構造体及び天井構造体によって形成することを特徴とするクリーンルーム構築方法を提供する。
More preferably, the beam and the column are joined by a pin joint structure. According to such a configuration, the bending stress in response to the seismic load does not substantially act on the beam. Therefore, the beam can be reduced in weight, and the seismic load acting on the steel structure frame can be further reduced.
From such a structural point of view, the present invention comprises an extension structure constructed in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and a clean room defined by a wall surface and a ceiling surface. In a clean room structure formed in a large indoor space,
The extension structure is a steel structure column in which a column base and a column head are respectively joined to a floor structure to be constructed and a horizontal member constituting an upper floor structure or a roof structure. A steel structure beam joined to an intermediate level of the column, a ceiling structure suspended from the beam and extending below the beam, and a wall structure built on the floor structure And
The wall structure and the ceiling structure are connected to each other to define a clean room,
The column base of the column is moored to the floor structure by a pin joint structure or a semi-fixed joint structure, the column head of the column is connected to the horizontal member by a pin joint structure, and the beam and the column are A clean room structure characterized by being joined by a pin joint structure is provided.
The present invention also provides a clean room construction method for constructing an extension structure in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and forming a clean room defined by the wall surface and ceiling surface in the indoor large space. In
The column base of the steel structure column is anchored by a pin joint structure or a semi-fixed joint structure to the floor structure to be constructed with the extension structure, and the floor structure or roof structure on the upper floor is constructed. Join the pillar head of the pillar to the frame with a pin joint structure ,
A steel structure beam is arranged at an intermediate level of the column, and the end of the beam and the column are joined by a pin joint structure,
A ceiling structure is suspended from the beam to form a ceiling structure extending below the beam, and a wall structure is built on the floor structure to define a clean room, A clean room construction method is provided, wherein a clean room structure separated from a floor structure or a roof structure is formed by the wall structure and the ceiling structure .

本発明のクリーンルーム構造及びクリーンルーム構築方法によれば、５ｍ以上の階高又は天井高を有する既設建築物の屋内大空間に比較的大規模なクリーンルームを構築するクリーンルーム構造体及びクリーンルーム構築方法において、既存の床構造体の補強等を簡素化し又は省略可能にするとともに、クリーンルームの各種ダクト及び配線・配管等の施工性又は設計自由度を向上し且つその点検及び維持・管理を容易にすることができる。
また、柱の柱脚部をピン接合構造又は半固定接合構造によって床構造体に係留し、柱の柱頭部をピン接合構造によって横架材に連結し、梁と柱とをピン接合構造によって接合した本発明の上記構成によれば、既存の床構造体の補強等を簡素化し又は省略し得るばかりでなく、地震荷重に応答して柱及び梁の構造断面に作用する応力を低減し、これにより、鋼製骨組の構造断面を縮小し、鋼製骨組を軽量化することが可能となる。 According to the clean room structure and clean room construction method of the present invention, in the clean room structure and clean room construction method for constructing a relatively large clean room in a large indoor space of an existing building having a floor height or ceiling height of 5 m or more, It is possible to simplify or omit the reinforcement of floor structures, etc., improve the workability or design freedom of various clean room ducts, wiring and piping, etc., and facilitate their inspection, maintenance and management. .
In addition, the column base of the column is moored to the floor structure by a pin joint structure or a semi-fixed joint structure, the column head of the column is connected to the horizontal member by the pin joint structure, and the beam and the column are joined by the pin joint structure According to the above-described configuration of the present invention, the reinforcement of the existing floor structure can be simplified or omitted, and the stress acting on the structural sections of the columns and beams in response to the seismic load can be reduced. Thus, the structural cross section of the steel frame can be reduced, and the steel frame can be reduced in weight .

図１（Ａ）及び図１（Ｂ）は、既設建設物の構成を示す断面図及び部分平面図である。1A and 1B are a cross-sectional view and a partial plan view showing the structure of an existing construction. 図２は、本発明の好適な実施形態に係るクリーンルーム構造を示す断面図であり、クリーンルームを構成する複数の増設構造体を既設建設物内に構築した状態が示されている。FIG. 2 is a cross-sectional view showing a clean room structure according to a preferred embodiment of the present invention, in which a plurality of additional structures constituting the clean room are built in an existing construction. 図３は、図２に示す既設建設物の部分平面図である。FIG. 3 is a partial plan view of the existing construction shown in FIG. 図４は、図２及び図３に示す増設構造体の構成を示す断面図である。FIG. 4 is a cross-sectional view showing the configuration of the additional structure shown in FIGS. 2 and 3. 図５は、増設構造体の部分拡大断面図である。FIG. 5 is a partially enlarged cross-sectional view of the additional structure. 図６は、天井構造体の構成を示す部分斜視図である。FIG. 6 is a partial perspective view showing the configuration of the ceiling structure. 図７は、増設構造体の柱及び梁に作用する地震荷重及び反力を示す構造概念上の線図であり、柱の柱脚部の構造は、ピン接合構造として構造的に示されている。FIG. 7 is a structural conceptual diagram showing seismic loads and reaction forces acting on the columns and beams of the extension structure, and the structure of the column bases of the columns is structurally shown as a pin joint structure. . 図８は、増設構造体の柱及び梁に作用する地震荷重及び反力を示す線図であり、柱の柱脚部の構造は、半固定接合構造として構造的に示されている。FIG. 8 is a diagram showing seismic loads and reaction forces acting on the columns and beams of the additional structure, and the structure of the column bases of the columns is structurally shown as a semi-fixed joint structure.

本発明の好適な実施形態によれば、天井構造体(20)と上階の床構造体又は屋根構造体(F2,R)との間に形成された屋内上部空間(S3,S4)は、複数の増築構造体(10)の上方域に跨がって延びる。 According to a preferred embodiment of the present invention, the indoor upper space (S3, S4) formed between the ceiling structure (20) and the upper floor structure or roof structure (F2, R) is: It extends across the upper region of the plurality of extension structures (10).

本発明の更に好適な実施形態においては、上記梁(12)は、階高(H1,H2)×０．３〜０．７の範囲内、好ましくは、階高(H1,H2)×０．４〜０．６の範囲内の高さ位置(h1,h2)において柱(11)に接合される。好ましくは、設備点検等のための高所通路(15)が上記梁(12)と上階の床構造体又は屋根構造体(F2,R)との間に配置される。所望により、高所通路(15)は、複数の増設構造体(10)の上方域に跨がって配置される。 In a more preferred embodiment of the present invention, the beam (12) has a floor height (H1, H2) × 0.3 to 0.7, preferably a floor height (H1, H2) × 0. It is joined to the column (11) at a height position (h1, h2) within a range of 4 to 0.6. Preferably, a high passage (15) for equipment inspection or the like is disposed between the beam (12) and the floor structure or roof structure (F2, R) on the upper floor. If desired, the high passage (15) is disposed across the upper region of the plurality of additional structures (10).

好適には、上記天井構造体(20)は、上記梁(12)に懸吊した鋼製下地(21-26)に面材(27,28)を固定した構成を有し、上記壁構造体(30)は、床(F1,F2)上に建込んだ鋼製下地(31-33)に面材(34,34)を固定した構成を有し、天井構造体(20)の面材(27,28)は、壁構造体(30)の面材(34,34)に連接する。好ましくは、２層に積層した板厚１５mmの強化石膏ボードが天井構造体の鋼製下地の下面に取付けられ、２層に積層した板厚１２．５mmの強化石膏ボードが、壁構造体(30)の鋼製下地(31-33)の室内側面及び室側側面に取付けられる。 Preferably, the ceiling structure (20) has a structure in which face materials (27, 28) are fixed to a steel base (21-26) suspended from the beam (12), and the wall structure (30) has a structure in which the face material (34, 34) is fixed to the steel base (31-33) built on the floor (F1, F2), and the face material of the ceiling structure (20) ( 27, 28) are connected to the face material (34, 34) of the wall structure (30). Preferably, a reinforced gypsum board having a thickness of 15 mm laminated in two layers is attached to the lower surface of the steel base of the ceiling structure, and a reinforced gypsum board having a thickness of 12.5 mm laminated in two layers is provided on the wall structure (30 ) Of the steel substrate (31-33).

壁構造体又は天井構造体(20,30)を貫通する空調・換気ダクト、局所排気ダクト、排煙ダクト及び配管・配線等(D,E)の貫通部には、防火ダンパ等の防火設備(Da)が設置され、或いは、防・耐火処理(Ea)が施される。好ましくは、各増設構造体(10)は、増築構造体内のクリーンルームの環境（温湿度、清浄度等）を調整する空調機(40)を有する。空調機(40)の給気口及び還気口(41-44)は、壁構造体又は天井構造体(20,30)に配置され、防火ダンパ等の防火設備が給気口及び還気口(41-44)に設けられる。 Fire-proof equipment such as fire-proof dampers (D, E) in the air-conditioning / ventilation duct, local exhaust duct, smoke exhaust duct and piping / wiring (D, E) penetrating the wall structure or ceiling structure (20, 30) ( Da) is installed, or fireproofing and fireproofing (Ea) is applied. Preferably, each extension structure (10) has an air conditioner (40) that adjusts the environment (temperature, humidity, cleanliness, etc.) of the clean room in the extension structure. The air supply and return air inlets (41-44) of the air conditioner (40) are arranged in the wall structure or ceiling structure (20, 30), and fire prevention equipment such as fire prevention dampers are provided in the air supply and return air outlets. (41-44).

以下、添付図面を参照して本発明の好適な実施形態について詳細に説明する。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図１（Ａ）及び図１（Ｂ）は、既設建設物の構成を示す断面図及び部分平面図であり、図２及び図３は、クリーンルームを構成する複数の増設構造体を既設建設物内に構築した状態を示す断面図及び部分平面図である。なお、図２及び図３において、図１に示す既設建築物は、縮尺を拡大して示されている。 FIGS. 1A and 1B are a cross-sectional view and a partial plan view showing the configuration of an existing construction. FIGS. 2 and 3 show a plurality of additional structures constituting a clean room in the existing construction. It is sectional drawing and the partial top view which show the state constructed | assembled in FIG. 2 and 3, the existing building shown in FIG. 1 is shown on an enlarged scale.

図１に示す既設建築物Ａは、地盤Ｇ上に過去に建設された鉄骨構造・２階建ての建物であり、機械部品等の製造工場、或いは、機械部品等の塗装工場等の用途で過去に使用され、その後、遊休化した建物である。既設建築物Ａは、鉄骨構造の既存骨組を構成する梁Ｂ１、Ｂ２及び柱Ｃ１、Ｃ２と、各階の床構造体Ｆ１、Ｆ２及び外壁Ｗ１、Ｗ２とを有する。２階の床構造体Ｆ２及び屋根Ｒを支持する梁Ｂ１、梁Ｂ２は、トラス構造の鉄骨梁であり、１階の床構造体Ｆ１は、土間コンクリートからなり、２階の床構造体Ｆ２は、梁Ｂ１上に敷設したデッキプレート上に所定厚のコンクリートを施工した構造を有する。床構造体Ｆ１、Ｆ２上には、セメントモルタル等の床仕上げ材が施工されている。 The existing building A shown in FIG. 1 is a steel structure / two-story building constructed in the past on the ground G, and has been used in the past for applications such as machine parts manufacturing plants or machine parts painting plants. It is a building that was used in the future and then left idle. The existing building A includes beams B1 and B2 and columns C1 and C2 that constitute an existing frame of a steel structure, and floor structures F1 and F2 and outer walls W1 and W2 on each floor. Beams B1 and B2 supporting the floor structure F2 and the roof R on the second floor are steel beams having a truss structure, and the floor structure F1 on the first floor is made of dirt concrete, and the floor structure F2 on the second floor is And, it has a structure in which concrete of a predetermined thickness is constructed on a deck plate laid on the beam B1. A floor finishing material such as cement mortar is applied on the floor structures F1 and F2.

柱Ｃ１、Ｃ２は、角形鋼管からなり、柱Ｃ１、Ｃ２の梁間方向のスパンは、１５〜２０ｍ、例えば、１８ｍであり、柱Ｃ１、Ｃ２の桁行方向のスパンは、１０〜１５ｍ、例えば、１２ｍである。各階の階高Ｈ１、Ｈ２は、８〜１０ｍ、例えば、Ｈ１＝１０ｍ、Ｈ２＝８ｍである。既設建築物Ａの各階屋内空間Ｓ１、Ｓ２は、大容積の連続空間であるので、既設建築物Ａを精密機器等の製造工場又は生産工場として有効活用すべく、クリーンルーム施設を既設建築物Ａの屋内空間Ｓ１、Ｓ２に構築する既設建築物Ａの改修が可能である。 The columns C1 and C2 are made of square steel pipes, the span between the columns C1 and C2 in the beam direction is 15 to 20 m, for example, 18 m, and the span in the column direction of the columns C1 and C2 is 10 to 15 m, for example, 12 m. It is. The floor heights H1 and H2 of each floor are 8 to 10 m, for example, H1 = 10 m and H2 = 8 m. Each floor indoor space S1, S2 of the existing building A is a large-capacity continuous space. Therefore, in order to effectively use the existing building A as a manufacturing factory or a production factory for precision equipment, the clean room facilities of the existing building A are used. The existing building A constructed in the indoor spaces S1 and S2 can be repaired.

図２には、既設建築物Ａの屋内空間Ｓ１、Ｓ２に複数の増設構造体１０を構築した状態が示されている。増設構造体１０は、互いに離間した独立の構造体である。各増設構造体１０は、角形鋼管の柱１１と、柱１１の間に架設されたＨ形鋼の梁１２とから構成された鋼構造骨組を有する。柱１１の上端部は、梁Ｂ１、Ｂ２の下弦材に接合され、柱１１の下端部は、床構造体Ｆ１、Ｆ２に支持される。柱１１の上端部及び下端部と、梁Ｂ１、Ｂ２及び床構造体Ｆ１、Ｆ２との接合は、構造的には、ピン接合構造である。柱１１の下端部と床構造体Ｆ１、Ｆ２との接合を半固定接合構造として設計することも可能である。他方、梁１２の端部は、柱１１の中間高さ部分（高さｈ１、ｈ２）に接合される。梁１２の端部と柱１１との接合も又、ピン接合構造である。 FIG. 2 shows a state where a plurality of additional structures 10 are constructed in the indoor spaces S1 and S2 of the existing building A. The extension structure 10 is an independent structure separated from each other. Each additional structure 10 has a steel structure frame composed of a pillar 11 of a square steel pipe and a beam 12 of H-section steel laid between the pillars 11. The upper end of the column 11 is joined to the lower chord material of the beams B1 and B2, and the lower end of the column 11 is supported by the floor structures F1 and F2. The joint between the upper end and the lower end of the column 11 and the beams B1 and B2 and the floor structures F1 and F2 is structurally a pin joint structure. It is also possible to design the joint between the lower end portion of the pillar 11 and the floor structures F1 and F2 as a semi-fixed joint structure. On the other hand, the end of the beam 12 is joined to the intermediate height portion (height h1, h2) of the column 11. The joint between the end of the beam 12 and the column 11 is also a pin joint structure.

各階の床構造体Ｆ１、Ｆ２に対する梁１２の高さｈ１、ｈ２（梁芯位置）は、３〜５ｍの範囲に設定され、梁１２と梁Ｂ１、Ｂ２との間には、開放空間Ｓ３、Ｓ４が形成される。開放空間Ｓ３、Ｓ４は、換気ダクト、排気ダクト、排煙ダクト等の各種ダクト、電気・計装配線等の各種配線、給水管、ガス管、蒸気管等の各種配管を配置するための建築設備空間として使用される。設備点検等のための鋼構造の高所通路（キャットウォーク）１５が空間Ｓ３、Ｓ４の適所に配置される。 The heights h1 and h2 (beam core positions) of the beams 12 with respect to the floor structures F1 and F2 on each floor are set in a range of 3 to 5 m, and an open space S3, between the beams 12 and the beams B1 and B2, S4 is formed. Open spaces S3 and S4 are building facilities for arranging various ducts such as ventilation ducts, exhaust ducts and smoke exhaust ducts, various wirings such as electric and instrumentation wiring, various pipes such as water supply pipes, gas pipes and steam pipes. Used as space. A high-altitude passage (catwalk) 15 having a steel structure for equipment inspection or the like is disposed at appropriate positions in the spaces S3 and S4.

各増設構造体１０は、軽量鉄骨製天井下地材を含む天井構造体２０と、軽量鉄骨製スタッドを含む壁構造体３０とによって室５０を区画した構成を有する。室５０内には、施設の製品製造目的に相応した多数の製造装置又は製造機器Ｍ（図２及び図３に破線で示す）が配置される。 Each extension structure 10 has a configuration in which a chamber 50 is partitioned by a ceiling structure 20 including a lightweight steel-framed ceiling base material and a wall structure 30 including a lightweight steel-framed stud. In the chamber 50, a large number of manufacturing apparatuses or manufacturing equipment M (shown by broken lines in FIGS. 2 and 3) corresponding to the product manufacturing purpose of the facility are arranged.

図４は、増設構造体１０の構成を示す断面図である。天井構造体２０は、各梁１２の下側に懸吊され、壁構造体３０は、床構造体Ｆ１、Ｆ２上に建込まれる。壁構造体３０に隣接して空調機４０が配置される。空調機４０は、ＨＥＰＡ（High Efficiency Particulate Air)フィルタ等の高性能フィルタ、送風機、冷却コイル、加熱コイル等の空調設備機器を内蔵する。空調機４０の給気ダクト４１が、壁構造体３０に配置された給気口４２に接続される。空調機４０の還気ダクト４３が、壁構造体３０に配置された還気口４４に接続される。空調機４０の調整空気は、室５０の室内空間を循環する。空調機４０によって空調された室５０の室内環境は、所定の清浄度（例えば、クラス１０００００、或いは、クラス１００００）を有するクリーンルームを構成する。 FIG. 4 is a cross-sectional view showing the configuration of the additional structure 10. The ceiling structure 20 is suspended below each beam 12, and the wall structure 30 is built on the floor structures F1 and F2. An air conditioner 40 is disposed adjacent to the wall structure 30. The air conditioner 40 incorporates a high performance filter such as a HEPA (High Efficiency Particulate Air) filter, and air conditioning equipment such as a blower, a cooling coil, and a heating coil. An air supply duct 41 of the air conditioner 40 is connected to an air supply port 42 arranged in the wall structure 30. A return air duct 43 of the air conditioner 40 is connected to a return air port 44 arranged in the wall structure 30. The adjusted air of the air conditioner 40 circulates through the indoor space of the room 50. The indoor environment of the room 50 air-conditioned by the air conditioner 40 constitutes a clean room having a predetermined cleanliness (for example, class 100,000 or class 10000).

このような増設構造体１０によれば、後述するように柱１１の柱脚部の曲げモーメント及び鉛直反力（地震時）が低減するので、構造的に有利である。他方、室５０を含む増設構造体１０は、増設構造体１０の床面積等の特定の条件に基づいて各階の全体空間から防火区画する必要が生じる。しかし、１階の壁構造体３０の上端部と、水平区画（防火区画）を構成する床構造体Ｆ２との間には開放空間Ｓ３が存在するので、１階の壁構造体３０によって１階の室５０を防火区画することができない。同様に、２階の壁構造体３０の上端部と屋根Ｒとの間にも空間Ｓ４（図２）が存在するので、２階の壁構造体３０によっても２階の室５０を防火区画することができない。このため、増設構造体１０は、各階の中間レベルにおいて水平区画を形成すべく、耐火構造（耐火時間１時間）の天井構造体２０を有し、天井構造体２０及び壁構造体３０によって防火区画される。このように天井構造体２０によって各階の中間レベルにおいて水平区画を形成する防火区画の概念は、従来考慮されていなかった形態又は方式のものである。このような防火区画の概念によれば、防火区画のために壁構造体３０を上階床レベル又は屋根レベルまで延在せしめる必要がなくなるので、階高が高い既設建築物Ａの改修においては、極めて有利である。 Such an additional structure 10 is structurally advantageous because the bending moment and vertical reaction force (at the time of an earthquake) of the column base of the column 11 are reduced as will be described later. On the other hand, the expansion structure 10 including the chamber 50 needs to be fire-proofed from the entire space of each floor based on specific conditions such as the floor area of the expansion structure 10. However, since there is an open space S3 between the upper end of the first floor wall structure 30 and the floor structure F2 constituting the horizontal section (fire protection section), the first floor wall structure 30 causes the first floor The room 50 cannot be fire-protected. Similarly, since the space S4 (FIG. 2) exists also between the upper end of the second-floor wall structure 30 and the roof R, the second-floor wall structure 30 also fire-defines the second-floor room 50. I can't. For this reason, the extension structure 10 has a ceiling structure 20 having a fireproof structure (fireproof time 1 hour) so as to form a horizontal section at an intermediate level of each floor, and the fireproof section is formed by the ceiling structure 20 and the wall structure 30. Is done. As described above, the concept of the fire prevention section in which the ceiling section 20 forms a horizontal section at the intermediate level of each floor is of a form or method that has not been conventionally considered. According to the concept of such a fire prevention section, it is not necessary to extend the wall structure 30 to the upper floor level or the roof level for the fire prevention section. Therefore, in the repair of the existing building A having a high floor height, Very advantageous.

図５は、天井構造体２０及び壁構造体３０の構造を示す増設構造体１０の部分拡大断面図である。図６は、天井構造体２０の構成を示す部分斜視図である。 FIG. 5 is a partial enlarged cross-sectional view of the extension structure 10 showing the structure of the ceiling structure 20 and the wall structure 30. FIG. 6 is a partial perspective view showing the configuration of the ceiling structure 20.

図５及び図６には、１階の床構造体Ｆ１上に構築された増設構造体１０の天井構造体２０が示されている。天井構造体２０は、２層の面材を鋼製下地の下面に固定した構造を有する。鋼製下地は、軽量鉄骨製の野縁２１、クリップ２２、野縁受け２３及びハンガー２４を有する。ハンガー２４は、鋼製吊りボルト２５及び鋼製フック２６によって鋼製横架材１３に懸吊される。野縁２１は、約４５０mm〜約６００mm間隔を隔てて配置される。鋼製横架材１３は、チャンネル形鋼、溝形鋼等の形鋼からなり、梁１２の下面に固定された棒鋼、鋼製バー材等の鋼製支持具１４を介して梁１２の下側に固定される。所望により、振れ止め材等の金属部材（図示せず）が鋼製下地の適所に配置される。 5 and 6 show a ceiling structure 20 of the additional structure 10 constructed on the floor structure F1 on the first floor. The ceiling structure 20 has a structure in which two layers of face materials are fixed to the lower surface of a steel base. The steel base has a light steel field edge 21, a clip 22, a field edge receiver 23, and a hanger 24. The hanger 24 is suspended from the steel horizontal member 13 by a steel suspension bolt 25 and a steel hook 26. The field edges 21 are arranged with an interval of about 450 mm to about 600 mm. The steel horizontal member 13 is made of a shape steel such as a channel shape steel or a channel shape steel, and is placed under the beam 12 via a steel support 14 such as a bar steel or a steel bar material fixed to the lower surface of the beam 12. Fixed to the side. If desired, a metal member (not shown) such as a steady rest is placed in place on the steel substrate.

２層の面材として、下張り面材２７及び上張り面材２８がビス、ステープル、接着剤等の係留具又は固定手段によって野縁２１の下面に固定される。面材２７、２８として、板厚１５mmの強化石膏ボードを好適に使用し得る。 As a two-layer face material, an underlay face material 27 and an upholstery face material 28 are fixed to the lower surface of the field edge 21 by anchoring tools such as screws, staples, adhesives, or fixing means. As the face materials 27 and 28, a reinforced gypsum board having a thickness of 15 mm can be suitably used.

図５には、１階の床構造体Ｆ１上に構築された壁構造体３０が示されている。壁構造体３０は、２層の面材を床鋼製下地の両側面に固定した中空壁構造を有する。図５に示す如く、鋼製下地は、床構造体Ｆ１上に配置された軽量鉄骨製の下部ランナ３１と、天井構造体２０の縁部に固定された軽量鉄骨製の上部ランナ３２と、上下のランナ３１、３２の間に垂直に建込まれた軽量鉄骨製のスタッド３３とから構成される。スタッド３３は、約４５０mm〜約６００mmの間隔を隔てて配置される。所望により、スペーサ、振れ止め材等の金属部材（図示せず）が鋼製下地の適所に配置される。 FIG. 5 shows a wall structure 30 constructed on the floor structure F1 on the first floor. The wall structure 30 has a hollow wall structure in which two layers of face materials are fixed to both side surfaces of a floor steel base. As shown in FIG. 5, the steel base includes a light steel lower runner 31 disposed on the floor structure F1, a light steel upper runner 32 fixed to the edge of the ceiling structure 20, and upper and lower parts. It is comprised from the stud 33 made from a lightweight steel frame installed perpendicularly between the runners 31 and 32. The studs 33 are arranged with an interval of about 450 mm to about 600 mm. If desired, metal members (not shown) such as spacers and steady rests are disposed at appropriate positions on the steel substrate.

下張り面材３４及び上張り面材３５がビス、ステープル、接着剤等の係留具又は固定手段によってスタッド３３の室内側面及び室外側面に固定される。面材３４、３５として、板厚１２．５mmの強化石膏ボードを好適に使用し得る。面材３４、３５の下端部は、床面に近接又は当接し、面材３４、３５の上端部は、天井構造体２０の面材下面に近接又は当接する。 The lower surface material 34 and the upper surface material 35 are fixed to the indoor side surface and the outdoor side surface of the stud 33 by anchoring tools such as screws, staples, adhesives, or fixing means. As the face members 34 and 35, a reinforced gypsum board having a thickness of 12.5 mm can be suitably used. The lower end portions of the face members 34 and 35 are close to or abut on the floor surface, and the upper end portions of the face members 34 and 35 are close to or contact the lower surface of the face member of the ceiling structure 20.

室内側に配置された面材２８、３５の表面には、防塵クロス、防塵塗装等の室内仕上げ材４１、４２が施工される。床構造体Ｆ１のセメントモルタル下地４３を有し、下地４３の上面には、樹脂系塗り床材、床用樹脂シート材等の床仕上げ材４４が施工される。所望により、天井面及び壁面の取合い部には、天井見切り縁等の上部見切り材（図示せず）が取付けられ、壁面及び床面の取合い部には、巾木材等の下部見切り材（図示せず）が取付けられる。 Indoor finishing materials 41 and 42 such as dust-proof cloth and dust-proof coating are applied to the surfaces of the face materials 28 and 35 disposed on the indoor side. The floor structure F1 has a cement mortar base 43. On the top surface of the base 43, a floor finishing material 44 such as a resin coating floor material or a floor resin sheet material is applied. If desired, an upper parting material (not shown) such as a ceiling parting edge is attached to the joint part of the ceiling surface and the wall surface, and a lower parting material (not shown) such as a width wood is attached to the joint part of the wall surface and the floor surface. Can be installed.

室５０の天井高ｈ４は、例えば、約３ｍに設定され、横架材１３の下面と天井面との間の距離ｈ５は、例えば、約３５０mmに設定される。高さｈ５の領域は、図５に破線で示すダクト（換気ダクト、排気ダクト、排煙ダクト等）Ｄや、各種配線・配管（電気・計装配線、給水配管等）Ｅを水平方向に配置又は配列可能な建築設備空間として使用される。 The ceiling height h4 of the chamber 50 is set to about 3 m, for example, and the distance h5 between the lower surface of the horizontal member 13 and the ceiling surface is set to about 350 mm, for example. In the area of height h5, ducts (ventilation ducts, exhaust ducts, smoke exhaust ducts, etc.) D indicated by broken lines in FIG. 5 and various wirings / pipings (electrical / instrumentation wiring, water supply piping, etc.) E are arranged in the horizontal direction. Or it is used as a building equipment space that can be arranged.

天井構造体２０及び壁構造体３０は、１時間耐火の耐火性能を有する。室５０に入退室し又は機器・資材を室５０に搬入・搬出するための出入り口には、防火ドア又は防火扉（図示せず）が設置される。ダクトＤが天井構造体２０（又は壁構造体３０）を貫通するダクト貫通部又は給排気口には、防火ダンパ又は排煙・防火ダンパ等の防火設備Ｄａが設置される。また、配線・配管Ｅが天井構造体２０（又は壁構造体３０）を貫通する配管・配線貫通部Ｅａには、所定の防・耐火処理が施される。かくして、増設構造体１０は、天井構造体２０及び壁構造体３０によって防火区画される。 The ceiling structure 20 and the wall structure 30 have a fire resistance of 1 hour. A fire door or a fire door (not shown) is installed at the entrance for entering / exiting the room 50 or for loading / unloading equipment / materials into / from the room 50. A fire prevention equipment Da such as a fire prevention damper or a smoke / fire prevention damper is installed in a duct penetrating portion or a supply / exhaust port through which the duct D passes through the ceiling structure 20 (or the wall structure 30). In addition, the pipe / wiring penetrating portion Ea through which the wiring / piping E passes through the ceiling structure 20 (or the wall structure 30) is subjected to a predetermined fireproofing / fireproofing treatment. Thus, the extension structure 10 is divided into a fireproof section by the ceiling structure 20 and the wall structure 30.

図４には、柱１１の頂部を梁Ｂ１の下弦材に連結する連結部の構造が示されている。柱１１の頂部には、略Ｔ形の鋼製ブラケット１１ａが固定され、梁１２の下弦材の下面にも又、略Ｔ形の鋼製ブラケット１１ｂが固定される。ブラケット１１ａ、１１ｂの各フランジ部に形成されたボルト挿通孔（図示せず）には、高力ボルト１１ｃが挿通され、締付けられる。 FIG. 4 shows a structure of a connecting portion that connects the top of the column 11 to the lower chord material of the beam B1. A substantially T-shaped steel bracket 11 a is fixed to the top of the column 11, and a substantially T-shaped steel bracket 11 b is also fixed to the lower surface of the lower chord member of the beam 12. High-strength bolts 11c are inserted into and tightened into bolt insertion holes (not shown) formed in the flange portions of the brackets 11a and 11b.

図５には、柱１１の柱脚部の構造が示されている。柱１１の下端面には、ベースプレート１１ｄが固定される。ベースプレート１１ｄは、柱下均しモルタル１１ｅを介して床構造体Ｆ１上に設置される。ケミカルアンカー１７が、ベースプレート１１ｄのボルト挿通孔に挿通され、床構造体Ｆ１の土間コンクリートに埋め込まれる。かくして、柱１１は、支点間距離ｈ３の支点で両端を支持してなる鉛直支柱を構成する。 FIG. 5 shows the structure of the column base of the column 11. A base plate 11 d is fixed to the lower end surface of the column 11. The base plate 11d is installed on the floor structure F1 via the under-column smoothing mortar 11e. The chemical anchor 17 is inserted into the bolt insertion hole of the base plate 11d and embedded in the soil concrete of the floor structure F1. Thus, the column 11 constitutes a vertical column that is supported at both ends by a fulcrum having a fulcrum distance h3.

また、図５には、梁１２の端部と柱１１との連結部の構造が示されている。図５に示す如く、鋼製ブラケット１２ａが柱１１の中間高さ部分（高さｈ１、ｈ２）に固定される。高力ボルト１２ｂが、ブラケット１２ａ及び梁１２に形成された複数のボルト挿通孔（図示せず）に挿通され、締付けられる。 FIG. 5 shows the structure of the connecting portion between the end of the beam 12 and the column 11. As shown in FIG. 5, the steel bracket 12 a is fixed to the intermediate height portion (height h 1, h 2) of the column 11. The high-strength bolt 12b is inserted into a plurality of bolt insertion holes (not shown) formed in the bracket 12a and the beam 12 and tightened.

図７は、柱１１及び梁１２に作用する地震荷重（地震力）及び反力を示す構造概念上の線図である。図７において、柱１１の柱脚部は、ピン接合構造として構造的に把握されている。なお、図７には、柱１１に作用する曲げ応力Ｍが模式的に示されている。 FIG. 7 is a structural conceptual diagram showing seismic load (seismic force) and reaction force acting on the column 11 and the beam 12. In FIG. 7, the column base portion of the column 11 is structurally grasped as a pin joint structure. FIG. 7 schematically shows the bending stress M acting on the column 11.

前述の如く両端部を梁Ｂ１及び床構造体Ｆ１に連結した鉛直な柱１１は、支点間距離ｈ３の支点により支持された垂直な線形構造材として図７に示されている。柱１１の上端及び下端の接合部は、ピン接合構造として構造的に把握し得るので、短期水平荷重として増設構造体１０の軸組に作用する地震荷重ＦＧに応答して柱１１の柱頭部及び柱脚部に働く曲げモーメントは、実質的に無視することができる。地震荷重ＦＧは、梁１２の高さｈ１に作用し、地震荷重ＦＧに対して各柱１１の柱脚部及び柱頭部に働く水平反力ＲＦ１、ＲＦ２は、ＲＦ１＝ＦＧ×（ｈ３−ｈ１）／ｈ３、ＲＦ２＝ＦＧ×ｈ１／ｈ３である。梁１２は、階高Ｈ１×０．３〜０．７、好ましくは、階高Ｈ１×０．４〜０．６の範囲内の高さｈ１において柱１１に接合される。梁１２の各端部と柱１１との接合部は、ピン接合構造として構造的に把握されるので、梁１２には、曲げモーメントが作用しない。柱１１の中間高さ位置に生じる最大曲げ応力も、各接合箇所を剛接した従来のラーメン構造骨組に比べ、大きく低減する。 As described above, the vertical column 11 having both ends connected to the beam B1 and the floor structure F1 is shown in FIG. 7 as a vertical linear structural member supported by a fulcrum having a fulcrum distance h3. Since the joints of the upper end and the lower end of the column 11 can be structurally grasped as a pin joint structure, the column head of the column 11 and the column head in response to the seismic load FG acting on the shaft of the additional structure 10 as a short-term horizontal load The bending moment acting on the column base can be substantially ignored. The seismic load FG acts on the height h1 of the beam 12, and the horizontal reaction forces RF1 and RF2 acting on the column base and head of each column 11 with respect to the seismic load FG are RF1 = FG × (h3-h1) / H3, RF2 = FG × h1 / h3. The beam 12 is joined to the column 11 at a height h1 within the range of the floor height H1 × 0.3 to 0.7, preferably the floor height H1 × 0.4 to 0.6. Since the joint portion between each end portion of the beam 12 and the column 11 is structurally grasped as a pin joint structure, no bending moment acts on the beam 12. The maximum bending stress generated at the intermediate height position of the column 11 is also greatly reduced as compared with a conventional rigid frame structure in which each joint portion is rigidly connected.

例えば、増設構造体１０の天井構造体２０の荷重を１２０kg/m²、壁構造体３０の荷重を見付面積当たり７０kg/m²とし、１階の全増設構造体１０の荷重を３４０ton、１階の全増設構造体１０に作用する地震荷重ＦＧ（地震加速度＝１．０）を３４０tonとすると、ｈ３＝９７５０mm、ｈ１＝４０００mmであるとき、ＲＦ１≒１４０ton、ＲＦ２≒２００tonである。１階及び２階の各床面積を４８００m²とすると、ＲＦ１≒２００tonに相当する１階の単位床面積当たりの鉛直荷重は、約４０kg/m²であり、ＲＦ２≒１４０tonに相当する２階の単位床面積当たりの鉛直荷重は、約３０kg/m²である。このような値の単位荷重は、各階に配置される製造装置又は製造機器Ｍの重量、台数等を制限し、各階の積載荷重を軽減することにより比較的容易に吸収し得る程度の荷重であるにすぎず、従って、既設建築物Ａの耐震補強等を省略し得るので、増設構造体１０を既設建築物Ａに構築する改修工事において、極めて有利である。 For example, the load of the ceiling structure 20 of the extension structure 10 is 120 kg / m ² , the load of the wall structure 30 is 70 kg / m ² per area to be found, and the load of all the extension structures 10 on the first floor is 340 tons, 1 Assuming that the seismic load FG (earthquake acceleration = 1.0) acting on all the additional structures 10 on the floor is 340 tons, when h3 = 9750 mm and h1 = 4000 mm, RF1≈140 tons and RF2≈200 tons. If each floor area of the first floor and the second floor is 4800 m ² , the vertical load per unit floor area of the first floor corresponding to RF1≈200 tons is about 40 kg / m ² , and the second floor corresponding to RF2≈140 tons The vertical load per unit floor area is about 30 kg / m ² . The unit load of such a value is a load that can be absorbed relatively easily by limiting the weight, the number, etc. of the manufacturing apparatus or manufacturing equipment M arranged on each floor and reducing the loading load on each floor. Therefore, since the seismic reinforcement of the existing building A can be omitted, it is extremely advantageous in the renovation work for constructing the additional structure 10 in the existing building A.

また、前述のとおり、ピン接合構造を有する柱１１の柱脚部に働く曲げモーメントは、実質的に無視し得る程度のものであるにすぎない。しかも、地震荷重ＦＧに応答して柱１１の柱脚部に作用する鉛直反力は、鉛直反力ＲＶ＝０である。従って、柱１１ベースプレート１１ｄを後施工のケミカルアンカー１７によって床構造体Ｆ１の土間コンクリートに埋め込むことにより、柱１１の柱脚部を床構造体Ｆ１によって容易に支持することができる。これは、床構造体Ｆ１の補強を省略し又は簡略化し、或いは、既存の床構造体に大形基礎を新設又は増設する必要性をなくすので、増設構造体１０を既設建築物Ａに新設する改修工事において、極めて有利である。 Further, as described above, the bending moment acting on the column base portion of the column 11 having the pin joint structure is only a level that can be substantially ignored. Moreover, the vertical reaction force acting on the column base of the column 11 in response to the earthquake load FG is vertical reaction force RV = 0. Therefore, by embedding the column 11 base plate 11d in the soil concrete of the floor structure F1 by the post-construction chemical anchor 17, the column base of the column 11 can be easily supported by the floor structure F1. This eliminates or simplifies the reinforcement of the floor structure F1, or eliminates the need to newly install or add a large foundation to the existing floor structure, so the additional structure 10 is newly installed in the existing building A. It is extremely advantageous in renovation work.

更に、上記構成の増設構造体１０によれば、柱１１を両端ピン接合の単純梁として把握し得ることから、地震荷重ＦＧに応答して柱１１の構造断面に作用する応力を低減し、増設構造体１０を構成する鋼製骨組の構造断面を縮小することができるので、増設構造体１０の荷重（自重）が低減し、この結果、増設構造体１０に作用する地震荷重ＦＧが低減する。これは、増設構造体１０を既設建築物Ａに構築する上で極めて有利である。 Furthermore, according to the additional structure 10 having the above-described configuration, the pillar 11 can be grasped as a simple beam with both ends pin-joined, so that the stress acting on the structural section of the pillar 11 in response to the seismic load FG can be reduced and expanded. Since the structural cross section of the steel frame constituting the structure 10 can be reduced, the load (self-weight) of the extension structure 10 is reduced, and as a result, the seismic load FG acting on the extension structure 10 is reduced. This is extremely advantageous in constructing the additional structure 10 in the existing building A.

しかも、上記構造の架構によれば、梁１２の両端部がピン接合構造により柱１１に接合されるので、地震荷重ＦＧに応答する曲げ応力が梁１２の構造断面に作用せず、従って、梁１２の構造断面を縮小し、増設構造体１０の荷重（自重）を更に低減することができる。これは、増設構造体１０に作用する地震荷重ＦＧが更に低減することを意味するので、構造的に極めて有利である。 Moreover, according to the frame structure described above, since both ends of the beam 12 are joined to the column 11 by the pin joint structure, the bending stress in response to the seismic load FG does not act on the structural cross section of the beam 12, and therefore the beam The structural cross section of 12 can be reduced, and the load (self-weight) of the additional structure 10 can be further reduced. This means that the seismic load FG acting on the additional structure 10 is further reduced, which is extremely advantageous in terms of structure.

図８は、柱１１及び梁１２に作用する地震荷重（地震力）及び反力を示す構造概念上の他の線図である。図８において、柱１１の下端の接合部は、半固定接合構造として構造的に把握されている。なお、図８には、柱１１に作用する曲げ応力Ｍが模式的に示されている。 FIG. 8 is another diagram on the structural concept showing seismic load (seismic force) and reaction force acting on the column 11 and the beam 12. In FIG. 8, the joint portion at the lower end of the column 11 is structurally grasped as a semi-fixed joint structure. FIG. 8 schematically shows the bending stress M acting on the column 11.

前述の構造概念（図７）においては、柱１１の下端接合部をピン接合構造として構造的に把握されているが、柱１１の柱脚部を半固定接合構造として構造的に把握することも可能である。柱１１の柱脚部を半固定接合構造として把握する構造設計法は、回転バネを柱脚部に仮定して柱脚部の回転剛性を評価する設計法であり、図８に示す如く、地震荷重に応答した曲げ応力Ｍ'が柱１１の柱脚部に作用する。しかしながら、このような設計法により構造設計する場合においても、柱１１の柱脚部に働く曲げモーメントは、比較的小さい値のものであり、従って、柱１１のベースプレート１１ｄを後施工のケミカルアンカー１７によって床構造体Ｆ１の土間コンクリートに埋め込むことにより、柱１１の柱脚部を床構造体Ｆ１によって容易に支持することができるので、増設構造体１０を既設建築物Ａに新設する改修工事においては、極めて有利である。 In the above structural concept (FIG. 7), the lower end joint portion of the column 11 is structurally grasped as a pin joint structure, but the column base portion of the column 11 can be structurally grasped as a semi-fixed joint structure. Is possible. The structural design method for grasping the column base portion of the column 11 as a semi-fixed joint structure is a design method for evaluating the rotational rigidity of the column base portion assuming a rotary spring as the column base portion. As shown in FIG. A bending stress M ′ in response to the load acts on the column base of the column 11. However, even in the case of structural design by such a design method, the bending moment acting on the column base of the column 11 is a relatively small value, and therefore the base plate 11d of the column 11 is post-installed with the chemical anchor 17. By embedding in the soil concrete of the floor structure F1, the column base of the column 11 can be easily supported by the floor structure F1, so in the renovation work to newly install the additional structure 10 in the existing building A Is very advantageous.

以上説明した構造上の優位性は、２階部分に新築される増設構造体１０についても同様である。即ち、２階の増設構造体１０全体に作用する地震荷重ＦＧは、２階及び屋根の積載荷重を低減することにより十分に吸収し得る程度の剪断力であり、これは、２階に配置される製造装置又は製造機器Ｍの重量、台数等を制限し、或いは、屋根の荷重と関連した既存構造体の余剰耐力や、既存構造体の軽微な補強により十分に補償し得る程度のものであるにすぎない。 The structural advantages described above are the same for the additional structure 10 newly constructed on the second floor. That is, the seismic load FG acting on the entire second-floor extension structure 10 is a shear force that can be sufficiently absorbed by reducing the load capacity on the second floor and the roof, and this is arranged on the second floor. The manufacturing equipment or manufacturing equipment M is limited in weight, number of units, etc., or it can be sufficiently compensated by the extra strength of the existing structure related to the load on the roof or the slight reinforcement of the existing structure. Only.

以上、本発明の好適な実施形態について詳細に説明したが、本発明は、上記実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の範囲内において種々の変更又は変形が可能であり、かかる変更又は変形例も又、本発明の範囲内に含まれるものであることはいうまでもない。 The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various changes or modifications can be made within the scope of the present invention described in the claims. Needless to say, such modifications or variations are also included in the scope of the present invention.

例えば、図２において２階部分の構成として例示する如く、梁１２の一端部を既存の柱Ｃ２（又は柱Ｃ１）に接合し、梁１２の荷重を部分的に既存の柱Ｃ２（又は柱Ｃ１）によって支持するように増設構造体１０を構成しても良い。 For example, as illustrated as the configuration of the second floor portion in FIG. 2, one end of the beam 12 is joined to the existing column C2 (or column C1), and the load of the beam 12 is partially applied to the existing column C2 (or column C1). The additional structure 10 may be configured so as to be supported.

また、増設構造体１０の柱１１及び梁１２をトラス構造又はラチス構造等の横架材として設計することも可能である。 It is also possible to design the pillar 11 and the beam 12 of the additional structure 10 as a horizontal member such as a truss structure or a lattice structure.

更に、１階の柱１１の柱脚部を支持する小形の基礎を床構造体Ｆ１に構築し、小形基礎によって１階の柱１１を支持することも可能である。 Furthermore, it is also possible to construct a small foundation for supporting the column base of the pillar 11 on the first floor in the floor structure F1, and to support the pillar 11 on the first floor by the small foundation.

また、増設構造体１０の防火区画を構成する面材及び下地材の素材、材質、板厚、施工方法、目地構造等は、耐火構造としての機能を確保し得る限り、適当に設計変更することが可能である。 In addition, the materials of the face material and the base material, the material thickness, the plate thickness, the construction method, the joint structure, etc. that constitute the fire prevention compartment of the extension structure 10 should be appropriately changed as long as the function as a fireproof structure can be secured. Is possible.

本発明は、比較的高い階高を有する既設建築物の屋内大空間に比較的大規模なクリーンルームを新たに構築するためのクリーンルーム構造及びクリーンルーム構築方法に適用される。本発明によれば、既存の床構造体の補強等が簡素化し又は省略可能となり、しかも、クリーンルームの各種ダクト及び配線・配管等の施工性又は設計自由度を向上し且つその点検及び維持・管理を容易にすることができるので、その実用的価値は、顕著である。 The present invention is applied to a clean room structure and a clean room construction method for newly constructing a relatively large clean room in a large indoor space of an existing building having a relatively high floor height. According to the present invention, reinforcement or the like of an existing floor structure can be simplified or omitted, and the workability or design freedom of various ducts and wiring / piping in a clean room is improved, and the inspection, maintenance, and management thereof are performed. Therefore, its practical value is remarkable.

１０増設構造体
１１柱
１２梁
１５高所通路
２０天井構造体
３０壁構造体
４０空調機
５０室（クリーンルーム）
Ａ既設建築物
Ｂ１、Ｂ２梁（既存）
Ｃ１、Ｃ２柱（既存）
Ｆ１、Ｆ２床構造体（既存）
Ｗ１、Ｗ２外壁（既存）
Ｓ１、Ｓ２屋内空間
Ｓ３、Ｓ４開放空間
Ｈ１、Ｈ２階高
ｈ１、ｈ２梁の高さ DESCRIPTION OF SYMBOLS 10 Extension structure 11 Column 12 Beam 15 Height passage 20 Ceiling structure 30 Wall structure 40 Air conditioner 50 Room (clean room)
A Existing building B1, B2 Beam (existing)
C1, C2 pillars (existing)
F1, F2 Floor structure (existing)
W1, W2 outer wall (existing)
S1, S2 Indoor space S3, S4 Open space H1, H2 Floor height h1, h2 Beam height

Claims

In the clean room structure, which consists of an extension structure constructed in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and forms a clean room defined by the wall surface and ceiling surface in the indoor large space,
The extension structure is a steel structure column in which a column base and a column head are respectively joined to a floor structure to be constructed and a horizontal member constituting an upper floor structure or a roof structure. A steel structure beam joined to an intermediate level of the column; a ceiling structure of a fire-resistant structure that is suspended from the beam, extends under the beam, and has a fire-resistant performance for a predetermined fire-resistant time; A wall structure of a fireproof structure built on the floor structure and having a fireproof performance for a predetermined fireproof time;
The wall structure and the ceiling structure are connected to each other to form a clean room, and form a fire prevention section separated from an upper floor structure or a roof structure.

The column base of the column is moored to the floor structure by a pin joint structure or a semi-fixed joint structure, the column head of the column is connected to the horizontal member by a pin joint structure, and the beam and the column are The clean room structure according to claim 1, wherein the clean room structure is bonded by a pin bonding structure.

In the clean room structure, which consists of an extension structure constructed in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and forms a clean room defined by the wall surface and ceiling surface in the indoor large space,
The extension structure is a steel structure column in which a column base and a column head are respectively joined to a floor structure to be constructed and a horizontal member constituting an upper floor structure or a roof structure. A steel structure beam joined to an intermediate level of the column, a ceiling structure suspended from the beam and extending below the beam, and a wall structure built on the floor structure And
The wall structure and the ceiling structure are connected to each other to define a clean room,
The column base of the column is moored to the floor structure by a pin joint structure or a semi-fixed joint structure, the column head of the column is connected to the horizontal member by a pin joint structure, and the beam and the column are A clean room structure characterized by being joined by a pin joint structure .

The beams, one of the claims 1 to 3, characterized in that it is joined to the pillar in the floor height (H1, H2) height in the range of × 0.3~0.7 (h1, h2) 2. Clean room structure according to item 1 .

The clean room structure according to any one of claims 1 to 4 , wherein an altitude passage for inspection or maintenance / management is disposed between the beam and the horizontal member.

Wherein between the ceiling structure and said horizontal members, any one of claims 1 to 5, characterized in that the indoor upper space extending straddling region above the plurality of build-structure is formed The clean room structure described in the section.

In a clean room construction method of constructing an extension structure in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and forming a clean room defined by a wall surface and a ceiling surface in the indoor large space,
The column base of the steel structure column and the column head are respectively joined to the floor structure to construct the extension structure and the horizontal member constituting the upper floor structure or roof structure, and the column Join steel beam to the middle level of
A ceiling structure having a fireproof structure with a predetermined fireproof time is suspended from the beam to form a ceiling structure extending below the beam, and has a fireproof performance with a predetermined fireproof time. Building a fire-resistant wall structure on the floor structure,
A clean room is defined by the wall structure and the ceiling structure, and a fire prevention section separated from the floor structure or the roof structure on the upper floor is formed by the wall structure and the ceiling structure. Method.

The column base of the column is moored to the floor structure by a pin joint structure or a semi-fixed joint structure, the column head of the column is connected to the horizontal member by a pin joint structure, and the beam and the column are pinned The clean room construction method according to claim 7 , wherein joining is performed by a joining structure.

In a clean room construction method of constructing an extension structure in an indoor large space of an existing building having a floor height or ceiling height of 5 m or more, and forming a clean room defined by a wall surface and a ceiling surface in the indoor large space,
The column base of the steel structure column is anchored by a pin joint structure or a semi-fixed joint structure to the floor structure to be constructed with the extension structure, and the floor structure or roof structure on the upper floor is constructed. Join the pillar head of the pillar to the frame with a pin joint structure ,
A steel structure beam is arranged at an intermediate level of the column, and the end of the beam and the column are joined by a pin joint structure,
A ceiling structure is suspended from the beam to form a ceiling structure extending below the beam, and a wall structure is built on the floor structure to define a clean room, A clean room construction method comprising forming a clean room structure separated from a floor structure or a roof structure by the wall structure and the ceiling structure .

Any one of claims 7 to 9, characterized in that joined to the pillar at the height (h1, h2) in the range of the beam to floor height (H1, H2) × 0.3~0.7 The clean room construction method as described in the item .

The clean room construction method according to any one of claims 7 to 10 , wherein an altitude passage for inspection or maintenance / management is disposed between the beam and the horizontal member.

According to any one of claims 7 to 11 and forming the interior upper space extending straddling region above the plurality of build-structure between the front roof structure and the horizontal member Clean room construction method.