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

7-2. Former Temiya Railway Facilities /Train Shed No. 3Name：Former Temiya Railway Facilities /Train Shed No. 3Construction year：Meiji 18（1885）Structure：Brick masonry, iron roof, sidingBuilding area：118.57m2Location：1 Chome, Temiya, Otaru City, HokkaidoProprietor：Otaru CityDesignation/Registration（date）：Important Cultural Property（2001.11.14）Restoration period：2006 ? 2009? Restoration PlanningThe Temiya Railway Facilities were constructed as theterminus of Horonai Railroads established in 1881 (Meiji14) and the present Train Shed No. 3 was completed in1885 (photo 7-6). In 1882, the railroads were placed underthe authority of the Ministry of Engineering, in the followingyear the Ministry of Agriculture and Commerce, in 1886 theHokkaido Prefectural government, in 1888 Hokuyu-sha ? aprivate establishment ?, and then in the following year theoperation was finally sold to Hokkaido Coal Mine RailwayCompany. The railway changed hands several times over theages and in 2001, it was transferred gratis from HokkaidoRailway Company ( JR Hokkaido ) onto Otaru City that ownthe property today. Since construction, the building hasundergone numerous alterations including chimney removal,photo 7-6 Former Temiya Railway Facilities（from the left, Train Shed No.1,Turntable, Train Shed No.3）reroofing, and changes to the brick arched opening on thefront facade. Train Shed No. 3 was restored as a culturalproperty during the period of June 2006 to March 2010.This restoration included structural reinforcement based onstructural studies executed in 2005, repairs of deterioratedareas due to aging, as well as recovery of its function as atrain shed while assuring safety for adaptive use fn 44 .? Earlier reinforcement planBecause the area dominated by the underground pit fortrain maintenance was unclear, planning of the foundationswas kept to a minimum and structural reinforcement wasarranged as follows (figure 7-6).1 Footing beams will be installed and the bottom endsof reinforcement columns will be attached by a pinnedconnection.2 Buttresses will be placed on both sides from the inside toprevent deformation of the arch on the front facade.3 Buttresses to match the form of walls will be installed toprevent deformation of the gable wall above the beam.4 The wooden roof truss will be repaired or replaced.5 Horizontal bracing for assuring horizontal rigidity will beinstalled.? Details leading to changes in the reinforcement planDiscovery of the original pit through surveys involvingpartial dismantlement made reinforcement with footingbeams not possible in some areas. Therefore, the restorationmethod was changed to that involving introduction ofpiles for soil improvement. Also, treatment of the columnends was changed from pin connection to anchoring; theforms of reinforcement members and their placement werereconsidered fn 45 .? The altered reinforcement planAlterations made to the plan are as follows (figure7-7).1 By changing the connection of column ends from a pinconnection to rigid connection, structural durabilityrelying on its characteristic Rahmen frame was enhanced.2 Rigid connection of column ends enabled the installationof soil improvement piles down to the load bearing ground.3 Columns were changed to angular steel pipes andfigure 7-6 Initial plan for structural reinforcement（Reference：重要文化財旧手宮鉄道施設（機関車庫三号ほか）保存修理工事報告書）figure 7-7 Altered structural reinforcement plan（Reference：重要文化財旧手宮鉄道施設（機関車庫三号ほか）保存修理工事報告書）112Chapter 6A Collection of Case Studies of Preservation and Restoration of Brick Masonry Structures