山口大学工学部研究報告第67巻第1号目次


  1. 老朽RC橋の健全度診断と余寿命推定へのJ-BMS RC版の適用と検証
    宮本文穂、高橋 順、江本久雄、鈴木 晃
    要旨】【本文(PDF)

  2. Phase relation of some sulfide system-(2)
    Arashi KITAKAZE
    要旨】【本文(PDF)

  3. 萩市高山斑れい岩中の黄銅鉱と斑銅鉱について
    北風 嵐、小松隆一、麻川明俊
    要旨】【本文(PDF)


要旨一覧

老朽RC橋の健全度診断と余寿命推定へのJ-BMS RC版の適用と検証
宮本文穂、高橋 順、江本久雄、鈴木 晃
要旨
This paper describes the methods of performance evaluation and remaining life prediction for an aged reinforced concrete (RC) T-girder bridge via visual inspection data. The Bridge Management System (J-BMS) that was previously developed by the authors, and which is capable of forecasting the deterioration process of existing bridge members, was applied to evaluate the safety indices (soundness score) and re-maining life of the target bridge based on these test results. Using these methods, the remaining life of an aged RC-T girder bridge(SK-bridge) can be quantitatively estimated by applying the bridge rating expert (BREX) system, which is a subsystem of the J-BMS RC version that incorporates with the field inspection data. In this study, visual inspection was carried out on the aged bridge(SKbridge) by professional visual inspectors, during which all variations of the inspection results were evaluated using a five-step question-naire. As a result, it was found that the soundness score (safety index) and remaining life predictions were influenced by the learning (supervised) data selection. Additionally, the predicted remaining lives were verified through concrete core tests extracted from main girders and deck slabs, and cross-section cutting-off girder tests.
本文(PDF)
Phase relation of some sulfide system-(2)
Arashi KITAKAZE
要旨
Phase relation studies for binary system of Bi-Se, and ternary systems such as Bi-Sb-S, Bi-Se-S, Co-Sb-S and Fe-Bi-S have been performed by author and some students. Their results are described as mainly phase diagrams and re-determined for some synthetic phases in their systems.
本文(PDF)
萩市高山斑れい岩中の黄銅鉱と斑銅鉱について
北風 嵐、小松隆一、麻川明俊
要旨
Chalcopyrite and bornite occur in the Kouyama gabbroic body, Hagi, Japan, and mainly studied for their texture and chemical compositions. Chalcopyrite has a polysynthetic twinning, and including string-like bornite. Bornite having lattice intergrowth of chalcopyrite, show polysynthetic twinning which chalcopyrite lattice is different orientation along their boundary. Concerning the mineral relations and compositions, they are thought to be crystallized at about 550℃, at intermediate sulfur fugacity.
本文(PDF)


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