JP2004309406A - Construction method of nuclear power plant - Google Patents

Construction method of nuclear power plant Download PDF

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JP2004309406A
JP2004309406A JP2003106115A JP2003106115A JP2004309406A JP 2004309406 A JP2004309406 A JP 2004309406A JP 2003106115 A JP2003106115 A JP 2003106115A JP 2003106115 A JP2003106115 A JP 2003106115A JP 2004309406 A JP2004309406 A JP 2004309406A
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construction
pit
equipment
work
steel
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Japanese (ja)
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Munetaka Takahashi
宗孝 高橋
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Toshiba Corp
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Toshiba Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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Abstract

<P>PROBLEM TO BE SOLVED: To attain a reduction in construction work amount and construction time as work process of constructing a nuclear power plant which a pit is formed in the body and anchor bolts are used in the pit for placing components becomes complicated because of the occurrence of processes of construction works and component works by turns. <P>SOLUTION: The pit is produced in component work side with a steel-made pit frame, and the steel-made pit 20 is placed on a beam 2 for working using anchor bolts 10, so that an interaction of the components works and construction works is reduced, and construction work amount and construction time are reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は建築工事と機器工事とが行われる原子力発電所の建設方法に係り、特に躯体内にピットを形成し、このピットの中に機器据付け用のアンカーボルトを用いて機器を据付けるようにした原子力発電所の建設方法に関する。
【０００２】
【従来の技術】
原子力発電プラントにおける原子力発電所建屋の建築工事並びに各種機器の据付け機械工事において、鉄筋コンクリート製の躯体の建屋マット部に機器据付け用のアンカーボルトを設けたピットを形成し、このピット内のアンカーボルトにＥＣＣＳポンプや、サンプタンクなどの機器を据付けるようにした構造が多く採用されている。
【０００３】
ここで、躯体内に形成され、機器据付け用のアンカーボルトを設けたピット、並びにこのピット内に据付けられる機器の従来の構成と建設工事手順について図８及び図９を参照して説明する。
躯体内に形成されるピット１の工事用架台２を据付けるため、原子力建屋の床躯体を１次コンクリート３と２次コンクリート４の２重構造とする。
【０００４】
まず、工事用架台２を１次コンクリート３に据付けるため、１次コンクリート３の上端筋６を設定する（Ｓ１２１）。
機器工事側では工事用架台用埋込み金物７の設置を建築工事側に要求する（Ｓ１２２）。
【０００５】
建築工事側にて１次コンクリート３と２次コンクリート４との境界の打継面５に機器工事側要求位置に合わせて工事用架台２用の埋込み金物７を設置し、その後１次コンクリート３を打設する（Ｓ１２３）。
【０００６】
１次コンクリート３の打設後、機器工事側にて工事用架台２を、機器工事側要求精度で工事用架台用埋込み金物７に据付けるとともに、ピット内埋込み金物１１の設定を建築工事側に要求する（Ｓ１２４）。
【０００７】
工事用架台２据付け後、建築工事側にてピット周囲に開口補強筋１４及び２次コンクリート上端筋８を設定し、機器工事側要求位置に合わせてピット内埋込み金物１１を設定し、コンパネ等を用いて図示しないピット型枠を工事用架台２の上に設定する（Ｓ１２５）。
【０００８】
ピット型枠設定後、機器工事側にてピット型枠底に機器工事側要求精度で機器９据付け用アンカーボルト１０を設定する（Ｓ１２６）。
アンカーボルト１０設定後、建築工事側にて２次コンクリート４を打設し（Ｓ１２７）、ピット型枠を取り外す。
【０００９】
ピット型枠取外し後、機器工事側にてピット１内に機器９を吊り込み、アンカーボルト１０に機器９を機器工事側要求精度で据付けを行う（Ｓ１２８）。
機器９の据付け後、建築工事側にて当該階の壁、及び天井の建築工事を行う（Ｓ１２９）。
【００１０】
当該階の建築工事の終了後、機器工事側にてピット内の配管サポート１２をピット内埋込み金物１１に合わせて据付け、配管サポート１２にピット内の機器９と取り合う配管１３の据付けを行う（Ｓ１３０）。
【００１１】
【発明が解決しようとする課題】
このように従来の原子力発電所の建設工事手順では、図９の工事手順フローに示すように建築工事側作業と機器工事側作業が交互に発生し、一方の工事が完了しないと次の工事に着手することができない。
【００１２】
双方の工事工程を交互に行う必要があるのは、双方の工事の施工精度に差があることが主な原因となっており、工事用架台２の据付け、アンカーボルト１０の設定、機器９の据付けは機器設計上の要求精度にて作業を行う必要があり、建築工事として行うことができないためである。
【００１３】
また、２次コンクリート上端筋８、開口補強筋１４の設定後に、機器工事側にてアンカーボルト用の孔明け及びアンカーボルト１０の取付け作業を行うが、工事用架台２、配筋、ピット型枠の錯綜する作業スペースの十分でない場所での作業となり、作業者への負担が大きい。
【００１４】
このため、現場における作業工程調整や作業管理が複雑で面倒になるのは言うまでもなく、複数の同種のピットのある原子力発電所においてはより膨大な作業量と建設時間を必要とする。
本発明は以上の課題を解決し、建設作業量を削減し、建設作業が短時間に、容易に行える原子力発電所の建設方法を得ることを目的とする。
【００１５】
【課題を解決するための手段】
上記目的を達成するため、本発明の請求項１に記載の発明は、原子力建屋の床躯体に工事用架台を据付ける工程と、アンカーボルト取付用の孔明けをした鋼製ピットを工事用架台に据付ける工程と、アンカーボルトを工事用架台に設定する工程と、鋼製ピットの周囲にコンクリートを打設する工程と、鋼製ピット内に機器を吊り込んでアンカーボルトに据付ける工程を有することを特徴とする。
【００１６】
本発明の請求項２に記載の発明は、アンカーボルトを工事用架台に設定する工程と、鋼製ピットと工事用架台とを一体に製作する工程と、この一体に製作された鋼製ピットと工事用架台を原子炉建屋の床躯体に据付ける据付工程と、この据付工程の後に前記鋼製ピットの周囲にコンクリートを打設する工程と、鋼製ピット内に機器を吊り込んで前記アンカーボルトに据付ける工程とを有することを特徴とする。
【００１７】
本発明の請求項３に記載の発明は、機器と鋼製ピットと工事用架台とを一体に製作する製作工程と、この一体に製作された機器と鋼製ピットと工事用架台を原子炉建屋の床躯体に据付ける据付工程と、この据付工程の後に前記鋼製ピットの周囲にコンクリートを打設する工程とを有することを特徴とする。
【００１８】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照して説明する。なお、以下の実施の形態の説明において図８に示す従来の原子力発電所建屋と同一部分には同一の符号を付し、詳細な説明は省略する。
【００１９】
図１は本発明の第１の実施の形態によるピットの断面図、図２は同じく工事手順を示すフローチャートである。
本実施の形態においては、ピット型枠として製作された鋼製ピット２０の工事用架台２を据付けるため、原子力建屋の床躯体を１次コンクリート３と２次コンクリート４の２重構造とする。
【００２０】
まず、工事用架台２を１次コンクリート３に据付けるため、１次コンクリート３の上端筋６を設定する（Ｓ２１）。
機器工事側では工事用架台用埋込み金具７の設置を建築工事側に要求する（Ｓ２２）。
【００２１】
建築工事側にて１次コンクリート３と２次コンクリート４との境界の打継面５に機器工事側要求位置に合わせて工事用架台２用の埋込み金物７を設置し、その後１次コンクリート３を打設する（Ｓ２３）。
【００２２】
１次コンクリート３の打設後、機器工事側にてアンカーボルト用のベースを組み込んだ工事用架台２を、機器工事側要求精度で工事用架台用埋込み金物７に据付けるとともに機器工事側では予めアンカーボルト１０の取付用の孔明けを行った鋼製ピット２０を工事用架台２に据付け、鋼製ピット２０内からアンカーボルト１０を工事用架台２のアンカーボルト用ベースに設定するとともにピット内埋込み金物１１の設定を建築工事側に要求する（Ｓ２４）。
【００２３】
アンカーボルト１０の設定後、建築工事側にて鋼製ピット２０周囲に開口補強筋１４及び２次コンクリート上端筋８を設定し、機器工事側要求位置に合わせてピット内埋込み金物１１を設定し、２次コンクリート４を打設する（Ｓ２５）。
【００２４】
２次コンクリート４の打設後、機器工事側にて鋼製ピット２０内に機器９を吊り込み、アンカーボルト１０に機器９を機器工事側要求精度で据付けを行う（Ｓ２６）。
機器９の据付け後、建築工事側にて当該階の壁、及び天井の建築工事を行う（Ｓ２７）。
【００２５】
当該階の建築工事の終了後、機器工事側にてピット内の配管サポート１２をピット内埋込み金物１１に合わせて据付け、配管サポート１２にピット内の機器９と取り合う配管１３の据付けを行う（Ｓ２８）。
なお、鋼製ピット２０には、コンクリート４との密着性を良くするスタッドボルト２１が取り付けられている。
【００２６】
本実施の形態によれば、機器工事側にてピット２０を鋼製のピット型枠により製作することにより機器工事側要求精度を保った上で機器工事と建築工事との工事工程の交錯を減少させることができ、建設作業量、建設時間共に削減することができる。
【００２７】
また、工事用架台２にアンカーボルト１０のベースを組み合わせることで建築工事側の２次コンクリート上端筋８、開口補助筋１４の設定を待たずに工事用架台２に鋼製ピット型枠を組み合わせた時点で鋼製ピット型枠の内側からアンカーボルト１０の設定を行うことが可能となり、現場での作業性の向上と工事工程の交錯を減らすことができる。
【００２８】
次に本発明の第２の実施の形態について図１のピットの断面図、及び図３の工事手順を示すフローチャートを参照して説明する。
本実施の形態においては第１の実施の形態と同様に、鋼製ピット２０の工事用架台２を据付けるため、床躯体を１次コンクリート３と２次コンクリート４の２重構造とする。
【００２９】
工事用架台２を１次コンクリート３に据付けるため、１次コンクリート上端筋６を設定する（Ｓ３１）。
機器工事側では工事用架台用埋込み金具７の設置を建築工事側に要求する（Ｓ３２）。
【００３０】
建築工事側にて１次コンクリート３と２次コンクリート４との境界の打継面５に機器工事側要求位置に合わせ工事用架台２用の埋込み金物７を設置し、その後１次コンクリート３を打設する（Ｓ３３）。
【００３１】
１次コンクリート３の打設後、機器工事側にて、アンカーボルト１０の取付用の孔明けを行った鋼製ピット２０と工事用架台２を一体とし、アンカーボルト１０の設定を行った上で、アンカーボルト１０に機器９を機器側要求精度で据付けを行い一体としたものを、機器工事側要求精度で工事用架台用埋込金物７に据付けるとともにピット内埋込み金物１１の設定を建築工事側に要求する（Ｓ３４）。
【００３２】
一体型鋼製ピット２０の設定後、建築工事側にてピット周囲に開口補強筋１４及び２次コンクリート上端筋８を設定し、機器工事側要求位置に合わせピット内埋込み金物１１を設定し、２次コンクリート４を打設し、２次コンクリート４の打設後、建築工事側にて当該階の壁、及び天井の建築工事を行う（Ｓ３５）。
【００３３】
当該階の建築工事の終了後、機器工事側にてピット内の配管サポート１２をピット内埋込み金物１１に合わせて据付け、配管サポート１２にピット内の機器９と取り合う配管１３の据付けを行う（Ｓ３６）。
【００３４】
本実施の形態によれば、鋼製ピット２０と工事用架台２とを一体とし、アンカーボルト１０の設定を行った上で機器９を据付けて一体としたものを工事用架台用埋込み金具７に据付けるようにしたので、第１の実施の形態の効果に加えて、機器工事側の作業工程が更に短縮され、原子力発電所の建設が更に容易となる。
【００３５】
次に本発明の第３の実施の形態について図１のピットの断面図、及び図４の工事手順を示すフローチャートを参照して説明する。
本実施の形態においては第１の実施の形態と同様に、鋼製ピット２０の工事用架台２を据付けるため、床躯体を１次コンクリート３と２次コンクリート４の２重構造とする。
【００３６】
工事用架台２を１次コンクリート３に据付けるため、１次コンクリート上端筋６を設定する（Ｓ４１）。
機器工事側では工事用架台用埋込み金具７の設置を建築工事側に要求する（Ｓ４２）。
【００３７】
建築工事側にて１次コンクリート３と２次コンクリート４との境界の打継面５に機器工事側要求位置に合わせ工事用架台２用の埋込み金物７を設置し、その後１次コンクリート３を打設する（Ｓ４３）。
【００３８】
１次コンクリート３の打設後、機器工事側にてアンカーボルト１０の取付用の孔明け及びピット内埋込み金物１１の設定を行った鋼製ピット２０と、アンカーボルト用のベースを組み込んだ工事用架台２を、アンカーボルト１０の設定を行った上で一体として機器工事側要求精度で工事用架台用埋込み金物７に据付ける（Ｓ４４）。
【００３９】
一体型鋼製ピット２０の設定後、建築工事側にてピット周囲に開口補強筋１４及び２次コンクリート上端筋８を設定し、２次コンクリート４を打設する（Ｓ４５）。
２次コンクリート４の打設後、機器工事側にてピット内に機器９を吊り込み、アンカーボルト１０に機器９を機器側要求精度で据付けを行う（Ｓ４６）。
【００４０】
ピット内に機器９の据付け後、建築工事側にて当該階の壁、及び天井の建築工事を行う（Ｓ４７）。
当該階の建築工事の終了後、機器工事側にてピット内の配管サポート１２をピット内埋込み金物１１に合わせて据付け、配管サポート１２にピット内の機器９と取り合う配管１３の据付けを行う（Ｓ４８）。
【００４１】
本実施の形態によれば、鋼製ピット２０に予めピット内埋込み金物１１の設定を行っておき、工事用架台２と一体にして工事用架台用埋込み金物７に据付けるようにしたので、第１の実施の形態の効果に加えて、機器工事側の作業工程が更に短縮され、原子力発電所の建設が更に容易となる。
【００４２】
次に本発明の第４の実施の形態について図１のピットの断面図、及び図５の工事手順を示すフローチャートを参照して説明する。
本実施の形態においては第１の実施の形態と同様に、鋼製ピット２０の工事用架台２を据付けるため、床躯体を１次コンクリート３と２次コンクリート４の２重構造とする。
【００４３】
工事用架台２を１次コンクリート３に据付けるため、１次コンクリート上端筋６を設定する（Ｓ５１）。
機器工事側では工事用架台用埋込み金具７の設置を建築工事側に要求する（Ｓ５２）。
【００４４】
建築工事側にて１次コンクリート３と２次コンクリート４との境界の打継面５に機器工事側要求位置に合わせ工事用架台２用の埋込み金物７を設置し、その後１次コンクリート３を打設する（Ｓ５３）。
【００４５】
１次コンクリート３の打設後、機器工事側にて、アンカーボルト１０の取付用の孔明け及びピット内埋込み金物１１の設定を行った鋼製ピット２０と工事用架台２を一体とし、アンカーボルト１０の設定を行った上で、アンカーボルト１０に機器９を機器工事側要求精度で据付けを行い、ピット２０内の配管サポート１２をピット内埋込み金物１１に合わせて据付け、配管サポート１２にピット２０内の機器９と取り合う配管１３の据付けを行い一体としたものを、機器工事側要求精度で工事用架台用埋込金物７に据付ける（Ｓ５４）。
【００４６】
一体型鋼製ピット２０の設定後、建築工事側にてピット周囲に開口補強筋１４及び２次コンクリート上端筋８を設定し、２次コンクリート４を打設し、当該階の壁、及び天井の建築工事を行う（Ｓ５５）。
【００４７】
本実施の形態によれば、鋼製ピット２０と工事用架台２とを一体とし、アンカーボルト１０の設定を行った上で器機９を据付けし、更にピット内に埋込み金物１１、配管サポート１２、及び配管１３の据付けを行って一体としたものを工事用架台埋込み金物７に据付けるようにしたので、第１の実施の形態の効果に加えて器機工事側の作業工程が更に短縮され、原子力発電所の建設が更に容易となる。
【００４８】
次に本発明の第５の実施の形態について図６のピットの断面図、及び図７の工事手順を示すフローチャートを参照して説明する。
本実施の形態においては第１の実施の形態と同様に、鋼製ピット２０の工事用架台２を据付けるため、床躯体を１次コンクリート３と２次コンクリート４の２重構造とする。
【００４９】
工事用架台２を１次コンクリート３に据付けるため、１次コンクリート上端筋６を設定する（Ｓ７１）。
機器工事側では工事用架台用埋込み金具７の設置を建築工事側に要求する（Ｓ７２）。
【００５０】
建築工事側にて１次コンクリート３と２次コンクリート４との境界の打継面５に機器工事側要求位置に合わせ工事用架台２用の埋込み金物７を設置し、その後１次コンクリート３を打設する（Ｓ７３）。
【００５１】
１次コンクリート３の打設後、機器工事側にてアンカーボルト用のベースを組み込んだ工事用架台２を、機器工事側要求精度で工事用架台用埋込み金物７に据付け、また、機器工事側にて予めアンカーボルト１０の取付用の孔明け及び開口補強としての補強プレート１５を設置した鋼製ピット２０を工事用架台２に据付け、鋼製ピット２０内からアンカーボルト１０を工事用架台２のアンカーボルト用ベースに設定するとともにピット内埋込み金具１１の設置を建築工事側に要求する（Ｓ７４）。
【００５２】
アンカーボルト１０の設定後、建築工事側にて２次コンクリート上端筋８を設定し、機器工事側要求位置に合わせてピット内埋込み金物１１を設定し、２次コンクリート４を打設する（Ｓ７５）。
２次コンクリート４の打設後、機器工事側にてピット１内に機器９を吊り込み、アンカーボルト１０に機器９を機器工事側要求精度で据付けを行う（Ｓ７６）。
【００５３】
機器９の据付け後、建築工事側にて当該階の壁、及び天井の建築工事を行う（Ｓ７７）。
当該階の建築工事の終了後、機器工事側にてピット内の配管サポート１２をピット内埋込み金物１１に合せ据付け、配管サポート１２にピット内の機器９と取り合う配管１３の据付けを行う（Ｓ７８）。
【００５４】
本実施の形態によれば、鋼製ピット２０外周に補強プレート１５を設置してあるので、第１の実施の形態に加えて、鋼製ピット２０の補強プレート１５周囲を２次コンクリート４で固められるので開口補強筋を設定する現場での作業が不要となり、建設工事全体の作業工程を短縮することができる。
この時、補強プレート１５に、アングル材、カットティー、チャンネル材を用いることもできる。
【００５５】
なお、上記第２乃至第４の実施の形態においても、鋼板ピット２０に補強プレート１５を設置することにより鋼製ピット２０の周囲に開口補強筋を設定する現場での作業が不要となり、建設工事全体の作業工程を短縮することができる。
【００５６】
また、上記第１乃至第５の実施の形態において、鋼製ピット２０に器機本体９、ピット内埋込み金物１１、配管１３などを予め取付けて一体として据付けることで、これを一つのユニットとして同一仕様のユニットを予め工場で必要数製作し、これを現地へ搬入後設置するようにすることで建設作業工程を短縮することができる。
【００５７】
【発明の効果】
以上説明したように、本発明によれば、建設作業量を削減し、建設作業が短時間に、容易に行える原子力発電所の建設方法を得ることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態を説明するための原子力発電所躯体のピットの断面図。
【図２】本発明の第１の実施の形態を説明するための原子力発電所建設の工事手順を示すフローチャート。
【図３】本発明の第２の実施の形態を説明するための原子力発電所建設の工事手順を示すフローチャート。
【図４】本発明の第３の実施の形態を説明するための原子力発電所建設の工事手順を示すフローチャート。
【図５】本発明の第４の実施の形態を説明するための原子力発電所建設の工事手順を示すフローチャート。
【図６】本発明の第５の実施の形態を説明するための原子力発電所躯体のピットの断面図。
【図７】本発明の第５の実施の形態を説明するための原子力発電所建設の工事手順を示すフローチャート。
【図８】従来の原子力発電所躯体のピットの断面図。
【図９】従来の原子力発電所建設の工事手順を示すフローチャート。
【符号の説明】
２…工事用架台、３…１次コンクリート、４…２次コンクリート、５…コンクリート打継面、６…１次コンクリート上端筋、７…工事用架台用埋込み金物、８…２次コンクリート上端筋、９…機器、１０…アンカーボルト、１１…ピット内埋込み金物、１２…ピット内配管サポート、１３…配管、１４…開口補強筋、１５…補強プレート、２０…鋼板ピット。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for constructing a nuclear power plant in which architectural work and equipment work are performed, in particular, forming a pit in a skeleton, and installing equipment using an anchor bolt for equipment installation in the pit. On the construction of nuclear power plants.
[0002]
[Prior art]
In the construction work of the nuclear power plant building and the installation work of various equipment in the nuclear power plant, a pit with anchor bolts for equipment installation was formed on the building mat part of the reinforced concrete frame, and the anchor bolts in this pit were A structure in which equipment such as an ECCS pump and a sump tank is installed is often used.
[0003]
Here, a conventional pit and a construction procedure of a pit formed in a skeleton and provided with an anchor bolt for device installation and a device installed in the pit will be described with reference to FIGS. 8 and 9.
In order to install the gantry 2 for the pit 1 formed in the skeleton, the floor skeleton of the nuclear building has a double structure of primary concrete 3 and secondary concrete 4.
[0004]
First, in order to install the construction stand 2 on the primary concrete 3, the upper end bar 6 of the primary concrete 3 is set (S121).
The equipment construction side requests the building construction side to install the embedded metal fittings 7 for the construction stand (S122).
[0005]
On the construction work side, an embedding metal 7 for the work stand 2 is installed on the joint surface 5 at the boundary between the primary concrete 3 and the secondary concrete 4 in accordance with the required position on the equipment construction side, and then the primary concrete 3 is removed. It is cast (S123).
[0006]
After the primary concrete 3 has been placed, the construction stand 2 is installed on the construction stand mounting hardware 7 at the equipment construction side with the required accuracy on the equipment construction side, and the setting of the pit embedded metal fittings 11 is set on the construction work side. Request (S124).
[0007]
After the installation of the work stand 2, after the construction work, the opening reinforcement 14 and the secondary concrete upper reinforcement 8 are set around the pit, the embedded hardware 11 in the pit is set according to the required position on the equipment construction side, and the control panel, etc. Then, a pit form (not shown) is set on the work base 2 (S125).
[0008]
After setting the pit formwork, the anchor bolt 10 for installing the device 9 is set on the bottom of the pit formwork on the equipment construction side with the required accuracy on the equipment construction side (S126).
After setting the anchor bolts 10, the secondary concrete 4 is cast on the building construction side (S127), and the pit formwork is removed.
[0009]
After removing the pit formwork, the equipment 9 is suspended in the pit 1 on the equipment construction side, and the equipment 9 is installed on the anchor bolt 10 with the required accuracy on the equipment construction side (S128).
After the installation of the equipment 9, the building work of the floor and the ceiling of the floor is performed on the building work side (S129).
[0010]
After the completion of the construction work on the floor, the piping support 12 in the pit is installed on the equipment construction side in accordance with the embedded hardware 11 in the pit, and the piping 13 to be fitted with the equipment 9 in the pit is installed on the piping support 12 (S130). ).
[0011]
[Problems to be solved by the invention]
As described above, in the conventional construction procedure of a nuclear power plant, as shown in the construction procedure flow of FIG. 9, the construction work and the equipment work occur alternately, and if one of the works is not completed, the next work is performed. I can't start.
[0012]
The main reason that both construction steps need to be performed alternately is that there is a difference in the construction accuracy between the two construction steps. The installation of the construction stand 2, the setting of the anchor bolts 10, and the This is because the installation must be performed with the required accuracy in equipment design and cannot be performed as building work.
[0013]
Also, after setting the secondary concrete upper reinforcement 8 and the opening reinforcement 14, drilling work for the anchor bolts and mounting the anchor bolts 10 are performed on the equipment construction side. The work is performed in a place where there is not enough work space where the work is complicated, which places a heavy burden on the workers.
[0014]
For this reason, it goes without saying that work process adjustment and work management on the site are complicated and troublesome, and a nuclear power plant having a plurality of similar pits requires a larger amount of work and construction time.
An object of the present invention is to solve the above-mentioned problems, reduce the amount of construction work, and provide a method for constructing a nuclear power plant in which construction work can be performed easily in a short time.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the invention as set forth in claim 1 of the present invention comprises a step of installing a construction gantry on a floor frame of a nuclear building, and a step of installing a drilled steel pit for anchor bolt installation. A process of setting anchor bolts on a work base, a process of placing concrete around a steel pit, and a process of suspending equipment in a steel pit and installing the anchor bolts. It is characterized by the following.
[0016]
The invention according to claim 2 of the present invention includes a step of setting an anchor bolt on a work base, a step of integrally manufacturing a steel pit and a work base, and a step of integrally manufacturing the steel pit. An installation step of installing a construction gantry on a floor frame of a reactor building, a step of placing concrete around the steel pit after this installation step, and suspending equipment in the steel pit to mount the anchor bolt. And a step of installing the device.
[0017]
According to a third aspect of the present invention, there is provided a manufacturing process for integrally manufacturing an equipment, a steel pit, and a construction gantry, and a method for manufacturing the integrated equipment, the steel pit, and the gantry for a reactor building. And a step of pouring concrete around the steel pit after this installation step.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiment, the same parts as those of the conventional nuclear power plant building shown in FIG. 8 are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0019]
FIG. 1 is a sectional view of a pit according to the first embodiment of the present invention, and FIG. 2 is a flowchart showing a construction procedure.
In the present embodiment, the floor frame of the nuclear building has a double structure of the primary concrete 3 and the secondary concrete 4 in order to install the work gantry 2 of the steel pit 20 manufactured as the pit formwork.
[0020]
First, the upper reinforcement 6 of the primary concrete 3 is set in order to install the construction stand 2 on the primary concrete 3 (S21).
The equipment construction side requests the building construction side to install the embedding metal fitting 7 for the construction stand (S22).
[0021]
On the construction work side, an embedding metal 7 for the work stand 2 is installed on the joint surface 5 at the boundary between the primary concrete 3 and the secondary concrete 4 in accordance with the required position on the equipment construction side, and then the primary concrete 3 is removed. It is cast (S23).
[0022]
After the primary concrete 3 has been placed, the work base 2 incorporating the anchor bolt base is installed on the equipment work side with the required accuracy of the equipment work side on the mounting base 7 for the work base, and the equipment work side The perforated steel pit 20 for mounting the anchor bolt 10 is installed on the work base 2, and the anchor bolt 10 is set from the steel pit 20 as a base for the anchor bolt of the work base 2 and embedded in the pit. The setting of the hardware 11 is requested to the building construction side (S24).
[0023]
After the setting of the anchor bolts 10, the opening reinforcements 14 and the secondary concrete upper reinforcements 8 are set around the steel pits 20 on the building construction side, and the metal fittings 11 in the pits are set according to the required positions on the equipment construction side. The secondary concrete 4 is cast (S25).
[0024]
After the placement of the secondary concrete 4, the equipment 9 is suspended in the steel pit 20 on the equipment construction side, and the equipment 9 is installed on the anchor bolt 10 with the required accuracy on the equipment construction side (S26).
After the installation of the equipment 9, the building work on the wall and ceiling of the floor is performed on the building work side (S27).
[0025]
After the completion of the construction work on the floor, on the equipment construction side, the piping support 12 in the pit is installed in accordance with the embedded hardware 11 in the pit, and the piping 13 to be fitted with the equipment 9 in the pit is installed on the piping support 12 (S28). ).
The steel pit 20 is provided with a stud bolt 21 for improving the adhesion to the concrete 4.
[0026]
According to the present embodiment, the pit 20 is made of a steel pit formwork on the equipment construction side, thereby maintaining the required accuracy on the equipment construction side and reducing the crossover of the construction process between the equipment construction and the construction work. And both the amount of construction work and the construction time can be reduced.
[0027]
Further, by combining the base of the anchor bolt 10 with the construction stand 2, the steel pit formwork was combined with the construction stand 2 without waiting for the setting of the secondary concrete upper reinforcement 8 and the opening reinforcement 14 on the construction side. At this point, it is possible to set the anchor bolts 10 from the inside of the steel pit formwork, and it is possible to improve workability on site and reduce crossover of construction steps.
[0028]
Next, a second embodiment of the present invention will be described with reference to a sectional view of a pit in FIG. 1 and a flowchart showing a construction procedure in FIG.
In the present embodiment, as in the first embodiment, the floor frame has a double structure of the primary concrete 3 and the secondary concrete 4 in order to install the work gantry 2 of the steel pit 20.
[0029]
In order to install the construction stand 2 on the primary concrete 3, the primary concrete upper reinforcement 6 is set (S31).
The equipment construction side requests the building construction side to install the mounting bracket 7 for the construction stand (S32).
[0030]
On the construction work side, the embedding metal 7 for the work stand 2 is installed on the joint surface 5 at the boundary between the primary concrete 3 and the secondary concrete 4 in accordance with the required position on the equipment construction side, and then the primary concrete 3 is driven. (S33).
[0031]
After placing the primary concrete 3, on the equipment construction side, the steel pit 20, which has been drilled for mounting the anchor bolt 10, and the construction stand 2 are integrated, and the anchor bolt 10 is set. The equipment 9 is installed on the anchor bolt 10 with the required accuracy on the equipment side, and the integrated one is installed on the mounting hardware 7 for the work stand with the required accuracy on the equipment construction side, and the setting of the embedded hardware 11 in the pit is set in the construction work. Request to the side (S34).
[0032]
After setting the integrated steel pit 20, an opening reinforcing bar 14 and a secondary concrete upper bar 8 are set around the pit on the building construction side, and the metal fittings 11 in the pit are set according to the required position on the equipment construction side. The secondary concrete 4 is cast, and after the secondary concrete 4 is cast, the building work of the floor and the ceiling of the floor is performed on the building work side (S35).
[0033]
After the completion of the construction work on the floor, on the equipment construction side, the piping support 12 in the pit is installed in accordance with the embedded hardware 11 in the pit, and the piping 13 to be fitted with the equipment 9 in the pit is installed on the piping support 12 (S36). ).
[0034]
According to the present embodiment, the steel pit 20 and the work base 2 are integrated, the anchor 9 is set, and the equipment 9 is installed and integrated. Since the installation is performed, in addition to the effects of the first embodiment, the work process on the equipment construction side is further shortened, and the construction of the nuclear power plant is further facilitated.
[0035]
Next, a third embodiment of the present invention will be described with reference to a sectional view of a pit in FIG. 1 and a flow chart showing a construction procedure in FIG.
In the present embodiment, as in the first embodiment, the floor frame has a double structure of the primary concrete 3 and the secondary concrete 4 in order to install the work gantry 2 of the steel pit 20.
[0036]
In order to install the construction gantry 2 on the primary concrete 3, the primary concrete upper reinforcement 6 is set (S41).
The equipment construction side requests the construction work side to install the mounting bracket 7 for the construction stand (S42).
[0037]
On the construction work side, the embedding metal 7 for the work stand 2 is installed on the joint surface 5 at the boundary between the primary concrete 3 and the secondary concrete 4 in accordance with the required position on the equipment construction side, and then the primary concrete 3 is driven. (S43).
[0038]
After the primary concrete 3 has been cast, a steel pit 20 in which drilling for mounting the anchor bolt 10 and setting of the metal fittings 11 in the pit have been performed on the equipment construction side, and a construction for incorporating a base for the anchor bolt After setting the anchor bolts 10, the gantry 2 is integrally mounted on the gantry 7 for the gantry for construction with the required accuracy on the equipment construction side (S44).
[0039]
After setting the integrated steel pit 20, the opening reinforcement bar 14 and the secondary concrete upper bar 8 are set around the pit on the building construction side, and the secondary concrete 4 is cast (S45).
After the placement of the secondary concrete 4, the equipment 9 is suspended in the pit on the equipment construction side, and the equipment 9 is installed on the anchor bolt 10 with the required accuracy on the equipment side (S46).
[0040]
After the installation of the equipment 9 in the pit, the building work of the floor and the ceiling of the floor is performed on the building work side (S47).
After completion of the construction work on the floor, the piping support 12 in the pit is installed on the equipment construction side in accordance with the embedded hardware 11 in the pit, and the piping 13 to be connected to the equipment 9 in the pit is installed on the piping support 12 (S48). ).
[0041]
According to the present embodiment, the metal fittings 11 in the pit are set in the steel pit 20 in advance, and the steel pit 20 is integrated with the gantry 2 and installed on the gantry 7 for the gantry. In addition to the effects of the first embodiment, the work process on the equipment construction side is further reduced, and the construction of the nuclear power plant is further facilitated.
[0042]
Next, a fourth embodiment of the present invention will be described with reference to a sectional view of a pit in FIG. 1 and a flow chart showing a construction procedure in FIG.
In the present embodiment, as in the first embodiment, the floor frame has a double structure of the primary concrete 3 and the secondary concrete 4 in order to install the work gantry 2 of the steel pit 20.
[0043]
In order to mount the construction stand 2 on the primary concrete 3, the primary concrete upper reinforcement 6 is set (S51).
The equipment construction side requests the building construction side to install the embedding metal fitting 7 for the construction stand (S52).
[0044]
On the construction work side, the embedding metal 7 for the work stand 2 is installed on the joint surface 5 at the boundary between the primary concrete 3 and the secondary concrete 4 in accordance with the required position on the equipment construction side, and then the primary concrete 3 is driven. (S53).
[0045]
After placing the primary concrete 3, the steel pit 20 in which the drill for mounting the anchor bolt 10 and the setting of the metal fittings 11 in the pit were set on the equipment construction side and the construction base 2 were integrated, and the anchor bolt was used. After setting 10, the equipment 9 is installed on the anchor bolt 10 with the required accuracy on the equipment construction side, the pipe support 12 in the pit 20 is installed in accordance with the embedded hardware 11 in the pit, and the pit 20 is mounted on the pipe support 12. The piping 13 to be connected with the equipment 9 in the inside is installed and the integrated one is installed on the mounting stand embedded metal 7 with the required accuracy on the equipment construction side (S54).
[0046]
After setting the integrated steel pit 20, an opening reinforcement 14 and a secondary concrete upper reinforcement 8 are set around the pit on the building construction side, a secondary concrete 4 is poured, and a wall and a ceiling of the floor are set. Construction work is performed (S55).
[0047]
According to the present embodiment, the steel pit 20 and the work base 2 are integrated, the anchor bolt 10 is set, the equipment 9 is installed, and the embedded metal 11, the pipe support 12, In addition to the effects of the first embodiment, the work process on the equipment construction side is further shortened, and the work process of the nuclear power plant is further reduced. Construction of the power plant will be easier.
[0048]
Next, a fifth embodiment of the present invention will be described with reference to a sectional view of a pit in FIG. 6 and a flow chart showing a construction procedure in FIG.
In the present embodiment, as in the first embodiment, the floor frame has a double structure of the primary concrete 3 and the secondary concrete 4 in order to install the work gantry 2 of the steel pit 20.
[0049]
In order to install the construction gantry 2 on the primary concrete 3, the primary concrete upper reinforcement 6 is set (S71).
The equipment construction side requests the building construction side to install the embedding metal fitting 7 for the construction stand (S72).
[0050]
On the construction work side, the embedding metal 7 for the work stand 2 is installed on the joint surface 5 at the boundary between the primary concrete 3 and the secondary concrete 4 in accordance with the required position on the equipment construction side, and then the primary concrete 3 is driven. (S73).
[0051]
After placing the primary concrete 3, the work base 2 incorporating the anchor bolt base is installed on the equipment work side with the required accuracy of the equipment work side on the embedded metal fitting 7 for the work base, and on the equipment work side. Then, a steel pit 20 in which a drilling hole for mounting the anchor bolt 10 and a reinforcing plate 15 for reinforcing the opening are previously installed is installed on the construction gantry 2, and the anchor bolt 10 is attached from the steel pit 20 to the anchor of the construction gantry 2. The building construction side is requested to set the bolt base and to install the pit embedded metal fittings 11 (S74).
[0052]
After the anchor bolt 10 is set, the secondary concrete upper reinforcement 8 is set on the building construction side, the metal fitting 11 in the pit is set according to the required position on the equipment construction side, and the secondary concrete 4 is cast (S75). .
After the placement of the secondary concrete 4, the equipment 9 is suspended in the pit 1 on the equipment construction side, and the equipment 9 is installed on the anchor bolt 10 with the required accuracy on the equipment construction side (S76).
[0053]
After the installation of the equipment 9, the construction work on the wall and ceiling of the floor is performed on the construction work side (S77).
After the completion of the construction work on the floor, on the equipment construction side, the piping support 12 in the pit is installed in accordance with the embedded hardware 11 in the pit, and the piping support 12 is installed with the piping 13 to be connected to the equipment 9 in the pit (S78). .
[0054]
According to the present embodiment, since the reinforcing plate 15 is provided around the outer periphery of the steel pit 20, in addition to the first embodiment, the periphery of the reinforcing plate 15 of the steel pit 20 is hardened with the secondary concrete 4. Therefore, the work on the site for setting the opening reinforcement is unnecessary, and the work process of the entire construction work can be shortened.
At this time, an angle material, a cut tee, and a channel material can be used for the reinforcing plate 15.
[0055]
In the second to fourth embodiments as well, by installing the reinforcing plate 15 in the steel plate pit 20, the work on the site for setting the opening reinforcing bar around the steel pit 20 becomes unnecessary, and the construction work is performed. The entire work process can be shortened.
[0056]
Further, in the first to fifth embodiments, the instrument main body 9, the metal fittings 11 in the pit, the pipes 13 and the like are preliminarily attached to the steel pit 20 and integrally installed, so that they are identical as one unit. The required number of units having the specifications are manufactured in advance at a factory, and the units are carried to the site after installation, whereby the construction work process can be shortened.
[0057]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a method for constructing a nuclear power plant in which the amount of construction work can be reduced and the construction work can be performed easily in a short time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a pit of a nuclear power plant skeleton for explaining a first embodiment of the present invention.
FIG. 2 is a flowchart illustrating a construction procedure of a nuclear power plant construction for explaining the first embodiment of the present invention.
FIG. 3 is a flowchart showing a construction procedure of a nuclear power plant construction for explaining a second embodiment of the present invention.
FIG. 4 is a flowchart showing a construction procedure of a nuclear power plant construction for explaining a third embodiment of the present invention.
FIG. 5 is a flowchart showing a construction procedure of nuclear power plant construction for explaining a fourth embodiment of the present invention.
FIG. 6 is a sectional view of a pit of a nuclear power plant skeleton for explaining a fifth embodiment of the present invention.
FIG. 7 is a flowchart showing a construction procedure of a nuclear power plant construction for explaining a fifth embodiment of the present invention.
FIG. 8 is a cross-sectional view of a pit of a conventional nuclear power plant body.
FIG. 9 is a flowchart showing a construction procedure of a conventional nuclear power plant construction.
[Explanation of symbols]
2 ... Construction stand, 3 ... Primary concrete, 4 ... Secondary concrete, 5 ... Concrete joint surface, 6 ... Primary concrete upper end bar, 7 ... Embedded metal for construction stand, 8 ... Secondary concrete upper end bar, 9: Equipment, 10: Anchor bolt, 11: Embedded hardware in pit, 12: Piping support in pit, 13: Piping, 14: Reinforcing reinforcement, 15: Reinforcement plate, 20: Steel plate pit.

Claims (5)

原子力建屋の床躯体に工事用架台を据付ける工程と、アンカーボルト取付用の孔明けをした鋼製ピットを工事用架台に据付ける工程と、アンカーボルトを工事用架台に設定する工程と、鋼製ピットの周囲にコンクリートを打設する工程と、鋼製ピット内に機器を吊り込んでアンカーボルトに据付ける工程を有することを特徴とする原子力発電所の建設方法。A process of installing a construction stand on the floor frame of a nuclear building, a process of installing a perforated steel pit for mounting an anchor bolt on the construction stand, and a process of setting an anchor bolt on the construction stand. A method for constructing a nuclear power plant, comprising: a step of placing concrete around a pit made of steel; and a step of suspending equipment in a steel pit and installing it on anchor bolts. アンカーボルトを工事用架台に設定する工程と、鋼製ピットと工事用架台とを一体に製作する工程と、この一体に製作された鋼製ピットと工事用架台を原子炉建屋の床躯体に据付ける据付工程と、この据付工程の後に前記鋼製ピットの周囲にコンクリートを打設する工程と、鋼製ピット内に機器を吊り込んで前記アンカーボルトに据付ける工程とを有することを特徴とする原子力発電所の建設方法。The process of setting the anchor bolts to the work frame, the process of integrally manufacturing the steel pit and the work frame, and installing the integrally manufactured steel pit and the work frame on the floor frame of the reactor building Mounting step, placing concrete around the steel pit after the installation step, and suspending equipment in the steel pit and installing the anchor bolt. How to build a nuclear power plant. 機器と鋼製ピットと工事用架台とを一体に製作する製作工程と、この一体に製作された機器と鋼製ピットと工事用架台を原子炉建屋の床躯体に据付ける据付工程と、この据付工程の後に前記鋼製ピットの周囲にコンクリートを打設する工程とを有することを特徴とする原子力発電所の建設方法。A manufacturing process for integrally manufacturing equipment, a steel pit, and a construction gantry, an installation process for installing the integrally manufactured equipment, a steel pit, and a construction gantry on a floor frame of a reactor building. And placing a concrete around the steel pit after the step. 前記製作工程において前記鋼製ピット内にピット内埋込み金具、配管サポート、配管を据付けたことを特徴とする請求項３記載の原子力発電所の建設方法。4. The method for constructing a nuclear power plant according to claim 3, wherein in the manufacturing process, a metal fitting, a pipe support, and a pipe are embedded in the steel pit. 鋼製ピットにコンクリートに埋め込まれる補強プレートを設ける工程を有することを特徴とする請求項１乃至４のいずれかに記載の原子力発電所の建設方法。The method for constructing a nuclear power plant according to any one of claims 1 to 4, further comprising a step of providing a reinforcing plate embedded in concrete in the steel pit.
JP2003106115A 2003-04-10 2003-04-10 Construction method of nuclear power plant Pending JP2004309406A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021352A1 (en) * 2008-08-22 2010-02-25 東芝プラントシステム株式会社 Installation method of equipment and anchor member supporting mechanism and anchor bolt unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021352A1 (en) * 2008-08-22 2010-02-25 東芝プラントシステム株式会社 Installation method of equipment and anchor member supporting mechanism and anchor bolt unit
KR20110049811A (en) 2008-08-22 2011-05-12 도시바 플랜트 시스템즈 앤드 서비시즈 코포레이션 Installation method of equipment and anchor member supporting mechanism and anchor bolt unit
US8671568B2 (en) 2008-08-22 2014-03-18 Toshiba Plant Systems & Services Corporation Method of installing equipment into a pit container using an anchor member supporting mechanism and an anchor bolt unit
JP5449169B2 (en) * 2008-08-22 2014-03-19 東芝プラントシステム株式会社 Apparatus installation method, anchor member support mechanism, and anchor bolt unit
US8806744B2 (en) 2008-08-22 2014-08-19 Toshiba Plant Systems & Services Corporation Installation method of equipment, anchor member supporting mechanism and anchor bolt unit
KR101632006B1 (en) 2008-08-22 2016-06-21 도시바 플랜트 시스템즈 앤드 서비시즈 코포레이션 Installation method of equipment and anchor member supporting mechanism and anchor bolt unit

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