ブックタイトル「煉瓦造建造物の保存と修復」英語版

概要

「煉瓦造建造物の保存と修復」英語版

7-3. Western-Style Main Building of FormerResidence of Duke Shimazu in Sodegasaki (SeisenUniversity )Name：Western-Style Main Building of Former Residenceof Duke Shimazu in Sodegasaki(Seisen University )Construction year：Taisho 6（1917）Structure：Brick masonry, two-storied, one basement building,slate roofBuilding area：876.21m2Location：3-191-39 Higashi Gotanda, Shinagawa Ward, Tokyoinside Seisen UniversityProprietor：Seisen UniversityDesignation/Registration（date）：Registered Tangible Cultural Property of TokyoMetropolitan ( Building )（2012.03.21）Restoration period：2009? Restoration planningThis is a building that was commissioned to Josiah Conder,Professor of the Architecture Department at ImperialCollege of Engineering, by the Shimazu Family in 1906(Meiji 39) and completed in 1915 (Taisho 4). In later years,under social influences including the Great Depression orthe Second World War, it was sold to the Bank of Japan. Inthe post-war period, the building was used by the GeneralHeadquarters as a military officer’s residence until 1954.After the end of occupation, the present property owner ofSeisen University purchased the land and structure from theBank of Japan in 1961 for continued use as an educationalfacility. From May 2009 to March 2010, restorationinvolving seismic reinforcement of the main building wasexecuted together with work on reroofing, air conditioning,and interior finishes (photo 7-8).chart7-1replacement with reinforced concrete shear walls steel plate shear wall reinforcementinstall steel shear wall(s) on the brick wall(s)meet the structural performance specifics with reinforcedconcrete wall quantityconstruction methodmeet the structural performance specifics with steel plateshear wall quantityhorizontal plane×requires a horizontal load bearing system△necessary to some extent×requires a foundation for installing reinforced concretewallfoundation system×requires foundation reinforcementworkability×noise, vibration, dust×noise, vibration, dustconstruction period about 16 months about 18 monthsarea of improvement×internal walls and the entire floor×internal walls and the entire floorremoval finishing materialReferences○：Good、△：Fair、×：Inadvisable×requires demolition of extant finishes and restorationafter execution×requires demolition of extant finishes and restorationafter executiontemporary construction×requires interior scaffolding×requires interior scaffoldingrestriction on use×rooms cannot be used during execution×rooms cannot be used during executionconstruction expenses×high fees required for interior restoration×high fees required for interior restorationperformance confirmationseismic analysis・quake resulting wall (reinforced concrete)seismic analysis・joint of quake resisting wall (steel)othersneed of measures against damage of second floor Hallceilingneed of measures against damage of second floor hall ceilingdowel rebar reinforcementinsertion of steel bars for prestressed concreteconstruction methodinsertion of dowel rebars in the thick brick wall tomeet the structural performance specifics with quantity ofmeet the structural performance specified by dowelintroducing compressionrebar quantityhorizontal plane○not so necessary○not so necessaryfoundation system○only inserting the rebar△anchorage of the foundation to the PC barsworkability×noise, vibration, dust○noise of drilling holesconstruction periodabout 14 monthsabout 10 monthsarea of improvement△the whole inner wall surface○roof and foundationremoval finishing material×requires demolition of extant finishes and restorationafter executionwork△requires only demolition of the roof and restorationtemporary construction×requires interior scaffolding△requires temporary roofno need for interior scaffoldingrestriction on use×rooms cannot be used during execution○rooms can be used during executionconstruction expenses×high fees required for interior restoration○interior restoration is not necessary, requires roof restorationperformance confirmationrequires performance testsrequires performance testsothersMethods studied for structural reinforcement（information provided by: Building Center of Japan, Masahito Kibayashi）need of measures against damage of second floor Hallceilingpreventive measures for ceiling damage can be introducedduring roof removal114Chapter 6A Collection of Case Studies of Preservation and Restoration of Brick Masonry Structures