Search Results 1-20 of 1606

  • An Earthquake Resistance Contest: Which vibration model is stable to earthquake?  [in Japanese]

    年縄 巧

    明星大学理工学部研究紀要 = Research bulletin of Meisei University School of Science and Engineering (56), 21-36, 2020-03-24

    IR 

  • STUDY ON ULTIMATE SHEAR STRENGTH OF CES MEMBERS  [in Japanese]

    FUJIMOTO Toshiaki , ARAMAKI Ryoma

    … INTRODUCTION</p><p> Steel reinforced concrete structures are typical composite structural systems comprising steel and reinforced concrete (RC), which exhibit excellent resistance against earthquake through high capacities and deformability. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (769), 395-402, 2020-03

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  • EQUIVALENT SHEAR SPRING MODELING METHOD OF SUPER TALL STEEL STRUCTURE BUILDING WITH CONTINUOUS ARRANGEMENT OF VISCOUS DAMPERS AND HYSTERETIC DAMPERS  [in Japanese]

    SOETA Kohei , SATO Daiki , ISHII Masato , KITAMURA Haruyuki

    … A combination of viscous dampers and hysteretic dampers is increasingly used nowadays to ensure high earthquake resistance of high-rise buildings – as such, this is called a "combination-system". …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 197-207, 2020-02

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  • SIMPLIFIED EVALUATION OF MEMBER FORCE FOR WOODEN HORIZONTAL HYBRID STRUCTURE CONSIDERING NONLINEARITY OF WOODEN ELEMENTS:Study on dynamic behavior of wooden horizontal hybrid structure : Part3  [in Japanese]

    YAMAZAKI Yoshihiro , SAKATA Hiroyasu

    … One of the solutions for fire and seismic resistance is composite structure, which utilizes different structures like steel or concrete. … It showed close agreement with test result.</p><p> 2) Although stiffness balance of each element was changed according to earthquake intensity, displacement mode and the corresponding equivalent mass ratio were relatively stable. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 241-250, 2020-02

    J-STAGE  AIJ 

  • ORTHODOX CHURCH AND HERITAGE POLICY IN EARLY CEAUŞESCU PERIOD:A study on heritage management and role of World Heritage in post-socialist Romania -1  [in Japanese]

    TATEZAKI Maiko , HANAZATO Toshikazu , MIYAKE Riichi

    … Romanian way of "carrot-and-stick" tactics to the Orthodox Church watered down the resistance of certain clergies and believers while the religious monuments were acknowledged as the tool for the national identity. …

    Journal of Architecture and Planning (Transactions of AIJ) (767), 203-212, 2020-01

    J-STAGE  AIJ 

  • STRUCTURAL OPTIMIZATION OF SUPPORTING STRUCTURE OF SCHOOL GYMNASIUM WITH STEEL ROOF FOR SEISMIC RESPONSE REDUCTION OF BEARING REACTION FORCES  [in Japanese]

    KIMURA Toshiaki , OHSAKI Makoto , SATO Kohei

    … <p> Fracture around the connections between the roof and the columns in the supporting wall of a long-span structure was reported as a key issue in the recent earthquake disasters in Japan. … A school gymnasium needs highest-level seismic resistance, because it is used as a shelter when in the event of earthquake disaster. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (767), 61-71, 2020-01

    J-STAGE  AIJ 

  • APPLICABILITY OF PRETENSIONED BOLTED JOINTS INCLUDING DIFFERENT CONTACT FACES  [in Japanese]

    TAMURA Hiroshi , MINAMI Kuniaki , YOSHIOKA Natsuki , UCHIDA Daisuke , MORO Mitsuru , HAMA Tatsuya , HIRAO Kensho

    <p> 現在,高力ボルト摩擦接合継手においては,継手ごとに統一された接触面仕様とすることが原則となっている.しかしながら,既設橋りょうの保全工事や耐候性鋼材を裸仕様で使用した箱桁の新設工事等においては,仕様の異なる接触面を含んだ摩擦接合継手を採用することで,施工の省力化・迅速化が図れる場合が多いものと考えられる.本研究では,仕様の異なる接触面を含んだ摩擦接合継手を異種接合面継手と呼び, …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(2), 255-274, 2020

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  • SEISMIC COUNTERMEASURES FOR CONVENTIONAL CEILINGS USING SQUARE STEEL PIPES FOR BRACE MATERIAL AND BASE MATERIAL  [in Japanese]

    YOSHIZU Toshihiro , OTA Masahisa , HISAMATSU Chihiro , KISHI Kazuyuki

    … In order to confirm the earthquake resistance of the devised ceiling foundation, a ceiling unit test was conducted. … For specimens with suspension lengths of 0.5m, 1.0m, and 1.5m, the earthquake resistance decreases as the suspension length increases.</p> …

    AIJ Journal of Technology and Design 26(63), 579-584, 2020

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  • BENDING TEST OF JOINT STRUCTURE OF PRECAST PC SLAB USING PERFOBOND STRIP AND ITS CORRESPONDING ELEMENT TEST  [in Japanese]

    NGUYEN Minh Hai , NAKAJIMA Akinori , FUJIWARA Satoshi , OBATA Ryoma , FUJIKURA Shuichi , HIRANO Yuma

    <p> 鋼桁橋などの床版の取替え工車におけるプレキャストPC床版の接合方法の1つとして,接合部に孔あき鋼板ジベルを配置し,そこに鋼繊維補強モルタルを後打ちして床版同士を接合する方法が提案されている.本研究では,この方法に着目して,モルタル打設時の接合部下面の型枠を兼ねるプレキャスト床版のアゴの有無,およびモルタル中の鋼繊維混入率をパラメータとした接合構造の曲げ試験を実施した.その結果, …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(5), II_17-II_28, 2020

    J-STAGE 

  • CONSIDERATION OF SHEAR RESISTING MECHANISM IN PERFOBOND STRIP WITHOUT PENETRATING REINFORCING BAR  [in Japanese]

    NAKAGISHI Taiyo , OYANAGI Ryuto , FURUUCHI Hitoshi

    <p> 孔あき鋼板ジベルは,リブ鋼板等に設けられた孔にコンクリートが充填されることにより,複合構造部材の一体化を図るものである.本研究は,貫通鉄筋のない孔あき鋼板ジベルについて,せん断抵抗メカニズムを把握するため実験的検討を行った.特にジベル孔部に作用する拘束力がせん断強度に与える影響に着目した.実験では,孔部周辺の鋼板とコンクリートの摩擦力を排除することができ,孔部のみに拘束力を加え …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(5), II_29-II_37, 2020

    J-STAGE 

  • APPLICABILITY OF GFRP INSPECTION PASSAGE WITH INTEGRATED MOLDING SANDWICH PANEL SLAB TO ACTUAL STRUCTURES  [in Japanese]

    TSUJIMOTO Koji , WANG Yuanbin , NAKAMURA Hitoshi

    <p> 軽量で耐食性に優れたガラス繊維強化プラスチック(GFRP)の特徴を活かした,GFRP検査路が開発され,実構造物に適用されている.本研究では,従来の組み立て式より,軽量化,合理化を図るために,一体成形サンドイッチパネル床版の適用を試みた.床版は,コア材,上下スキンプレート,フランジを一体成形で作製したものである.構造形式は,トラス桁形式と桁形式の2種類で,トラス桁形式では,床版の …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(5), II_84-II_94, 2020

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  • CRACKS OBSERVED IN LOADING TEST ON FIVE-STORY REINFORCED CONCRETE BUILDING SPECIMENS AND THEIR NUMERICAL SIMULATION  [in Japanese]

    KUWABARA Ryo , KITAMURA Fuhito , OBARA Taku , KONO Susumu , MUKAI Tomohisa , WATANABE Hidekazu

    … <p> According to the Guidelines for Performance Evaluation of Earthquake Resistance Reinforced Concrete Buildings published from the Architectural Institute of Japan, damage state of RC members is defined by concrete/steel stress level, residual deformation/ crack width. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 85(771), 737-747, 2020

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  • WORST EARTHQUAKE INPUT DIRECTION OF CRITICAL DOUBLE IMPULSE FOR IRREGULAR SHAPED BUILDING STRUCTURE  [in Japanese]

    KOJIMA Kotaro , SAKAMOTO Haruka , KOSAKA Ikuo

    … <p> The seismic responses of three-dimensional irregular shaped building structures depend on the input direction of earthquake ground motions, and the earthquake input direction has to be considered in the structural design of the irregular shaped buildings. … However, it is difficult to predict the earthquake ground motions input into the specific irregular shaped building structure. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 85(770), 509-519, 2020

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  • Effects of support position of a line bearing on load carrying capacity of a riveted steel girder end  [in Japanese]

    Inoue Taro , Tosaki Takayuki , Nakata Yuki , Kobayashi Yusuke , Katsuyama Masanori

    … <p>The incline or the settlement of an abutment or a pier due to aged deterioration, flood and earthquake cause inappropriate support condition of a line bearing, which could decrease the load carrying capacity of a steel girder end. …

    Journal of Structural Engineering, A 66A(0), 114-126, 2020

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  • Earthquake Protection View on Expanding Damage to Wooden Building in a Region Exposed by a Series of Cyclic Events: Simulation of Secondary Damage Caused by Aftershocks with Probabilistic Estimation of Degrading Seismic Resistant Performance  [in Japanese]

    SHINODA Akane , OKADA Shigeyuki , NAKASHIMA Tadayoshi

    <p>自治体による地震被害評価は,単発の想定地震に留まっている.しかし実際には,大きな地震の後には余震または連動型地震が後続し被害拡大を見る.避難解除の防災的観点からも余震による2次被害は正しい評価が重要であり,本稿において,耐震評点を指標に余震または後続する連動型地震による住家の耐震性能低下の評価法を提案する.解析対象は2004年新潟県中越地震の小千谷市の木造住家被害であり,複数回の …

    Journal of Japan Association for Earthquake Engineering 20(3), 3_51-3_69, 2020

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  • Investigation of Building Damage near Surface Fault Rupture of the 2016 Kumamoto Earthquake and Countermeasures for Active Faults  [in Japanese]

    HISADA Yoshiaki , MORI Kiyotaka , KIMOTO Koichiro , TANAKA Shinya , KANEDA Junpei , TERAMOTO Ayano , NAKAMURA Wataru , MURAKAMI Masahiro , MASUZAWA Yoe , SAKAI Shigeki , NAKANO Kenichi

    <p>2016年4月16日の熊本地震では,布田川・日奈久断層に加えて南阿蘇地域に出現した断層帯に沿って長さ約34 km,最大で約2 mの地表地震断層が出現した.著者らは地震後の2年間計6回,主要な地表地震断層の直上を中心として,断層から100 m程度以内のごく近傍の地域で建物の悉皆調査を実施し,さらにその後の現存・解体の状況を調査した.地表地震断層の出現位置は,既存の活断層地図とは概ね …

    Journal of Japan Association for Earthquake Engineering 20(2), 2_90-2_132, 2020

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  • PERFORMANCE EVALUATION OF COMPRESSION AND BENDING OF GFRP CHANNEL MEMBER CONSIDERING MATERIAL VARIATION  [in Japanese]

    HAYASHI Gen , KITANE Yasuo , GOI Yoshinao , SUZUKI Yasuo , SUGIURA Kunitomo , NISHIZAKI Itaru

    <p> 繊維強化ポリマー(FRP)は,高強度・高耐食性・軽量といった優れた性能を有しており,施工性や維持管理の観点から土木構造物への適用が進められている.FRPの特徴としては,繊維・樹脂材料からなる複合材料であり,自由度の高い材料設計が可能である.一方で,複数の材料から構成されることから,材料物性値にばらつきを有するため,部材性能を統計的に評価を行う必要がある.本論文では,ガラス繊維強 …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(1), 110-125, 2020

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  • Post-Earthquake Performances of Small Earth Dams with Geosynthetic Clay Liners  [in Japanese]

    NAKAZAWA Hiroshi , SAWADA Yutaka , ODA Tetsuya , SHIBUYA Satoru , KAWABATA Toshinori

    … In previous research, full-scale shaking table tests were carried out for four types of embankments under different installation conditions of GCLs in order to estimate their earthquake resistance. … As for the post-earthquake performances, it is essential to avoid overflow after earthquake, and it has been suggested that GCLs should be set within width of crests as possible to retain the crest height at the downstream side.</p> …

    Journal of the Society of Materials Science, Japan 69(1), 21-28, 2020

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  • RESIDENT CONSCIOUSNESS AND PROMOTION MEASURES FOR ACHIEVING HIGH THERMAL INSULATION OF THE DETACHED HOUSES  [in Japanese]

    ONODERA Hiroko , SUNAGA Nobuyuki , BANZAI Miyuu

    … thermal insulation standards and thermal insulation performance as well as their skills for educating the home owners.</p><p> ◆ For the existing houses</p><p> ・ Many houses have failed to renovate the thermal insulation and earthquake resistance systems compared to renovate the visible portions and the facilities.</p><p> ・ The willingness to renovate thermal insulation is high in case of people under 40 but many lack the necessary economic condition.</p><p> → …

    Journal of Environmental Engineering (Transactions of AIJ) (766), 1085-1094, 2019-12

    J-STAGE  AIJ 

  • Study on Effect of Reinforcement using Helical Bars on Circular RC Columns under Cyclic Lateral Load

    Kim Do-Yeon , Shin Ja-Eun , Kim Seong-Kyum , Jang Il-Young

    … To improve an earthquake-resistance of highway bridge constructed in South Korea before 1992, in this study, it was conducted quasi-static test according to the displacement-controlled (strain control) method on RC columns reinforced helical bar. …

    Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES) (5), 4-8, 2019-10-24

    IR  DOI 

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