Search Results 1-20 of 48

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  • CRITICAL EARTHQUAKE RESPONSE OF WOODEN HOUSES MODELED BY SINGLE-DEGREE-OF-FREEDOM BILINEAR+SLIP SYSTEM SUBJECTED TO PULSE-LIKE GROUND MOTIONS  [in Japanese]

    NAKAYAMA Shota , KOJIMA Kotaro

    … <p> After Parkfield earthquake in 1966 and San Fernando earthquake in 1971, pulse-like ground motions with a long period and short duration have been observed near earthquake source faults, and structural damages due to these pulse-like ground motions have been reported after the large earthquake events, e.g. Northridge earthquake in 1994, Hyogoken-Nanbu earthquake in 1995, Taiwan Chi-Chi earthquake in 1999, Niigata-Chuetsu earthquake in 2004 and Kumamoto earthquake in …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 86(780), 201-211, 2021

    J-STAGE 

  • Numerical approach to three-dimensional model of cellular electrophysiology by the method of fundamental solutions

    Nakamura Ken-Ichi , Sakakibara Koya , Yazaki Shigetoshi

    … We numerically show the existence of pulse-like traveling wave solutions for the model.</p> …

    JSIAM Letters 11(0), 17-20, 2019

    J-STAGE 

  • MODELING OF SUPER HIGH-RISE BUILDINGS AND RESPONSE PROPERTIES AGAINST RICKER WAVELET:-Damage prediction for super high-rise buildings in Osaka against pulse-like ground motions Part 1-  [in Japanese]

    OKAZAWA Rie , SUGINO Mina , HAYASHI Yasuhiro

    … The purpose of this study is to estimate the response and damage of existing super high-rise buildings in Osaka against strong pulse-likeground motions. … Also, aspects of damage might change completely differentby the ratio of 1st natural period and pulse period of input wave <i>T<sub>1</sub>/T<sub>p</sub></i> … and pulse displacement <i>D<sub>p</sub></i>. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (745), 421-430, 2018-03

    J-STAGE  AIJ 

  • Pulse Characterization Using Proposed Method and Evaluation of the Response of Buildings for Near-Fault Ground Motions on the 2016 Kumamoto Earthquake  [in Japanese]

    KAMEI Isao , MURASE Shiori , SUGINO Mina , HAYASHI Yasuhiro

    <p>内陸地殻内地震で発生する断層近傍観測波を対象として,観測波から抽出したパルス状波形を,少ないパラメータの単純な数学的パルス波で模擬し,そのパルス特性を評価する実用的な方法を提案する.本手法を用いて,2016年熊本地震の断層近傍観測波を対象に,パルス特性を評価し,観測波との比較により評価法の妥当性を検証する.また,高層建築物を対象とする,同観測波に対する層間変形角応答の考察から,周 …

    Journal of Japan Association for Earthquake Engineering 18(1), 1_18-1_34, 2018

    J-STAGE 

  • PERMANENT DISPLACEMENT ESTIMATION AND SIMPLIFICATION OF SEISMIC GROUND MOTION USING WAVELETS  [in Japanese]

    HIRAI Takashi

    … To extract the characteristic element of original wave including the pulse-like ground motion causing the permanent displacement, a wavelet set defined as the linear combination of basic wavelets is used. … Caused by this feature, the displacement by integration of the acceleration usually diverse like a quadratic function. … Especially, a complicated wave element can be extracted by the method. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (740), 1547-1557, 2017-10

    J-STAGE  AIJ 

  • MAXIMUM RESPONSE EVALUATION OF TRADITIONAL WOODEN HOUSES BASED ON MICROTREMOR MEASUREMENTS  [in Japanese]

    SUGINO Mina , OHMURA Saki , TOKUOKA Satomi , HAYASHI Yasuhiro

    … Applying this amplitude dependency of vibration characteristics into response spectrum method, the maximum response deformation angle of wooden frame specimens against an input wave has been estimated approximately. … Therefore, it is effective to increase walls and strengthen houses against design spectra in Japan.<br> 2) In case of pulse-like ground motions, the maximum response deformation angle on the first story do not change so much by the natural frequency. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 81(729), 1869-1879, 2016

    J-STAGE 

  • Location of Water-tree Degradation in XLPE Cables by DC Leakage Current Measurement  [in Japanese]

    Kumazawa Takao , Mamiya Hirotaka

    … In 6.6kV XLPE cables the pulse-like leakage current called "kick" due to water tree degradation is often observed. … Consequently, we detected the currents at the DC applying terminal and another terminal, and transformed them to the signals like a sine-wave having the phase difference exactly proportional to the time difference of arrival (TDOA) by using ceramic filters at 455kHz. …

    IEEJ Transactions on Power and Energy 136(4), 447-453, 2016

    J-STAGE 

  • Visualization using FDTD method of pulse-like sound wave propagation in cell culture medium  [in Japanese]

    會澤 康治 , 佐藤 駿介 , 小木 美恵子

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115(246), 7-12, 2015-10-09

    Ichushi Web 

  • An Investigation of Wave Propagation Modes on a Conductor in High Frequencies

    Asada Takashi , Miyamoto Yoshiko , Ametani Akihiro , Nagaoka Naoto , Baba Yoshihiro

    本論文では、数値電磁界解析手法であるFDTD法に基づき、パルス状の電圧波を始端に印加した際の高周波領域における導体波形伝搬モードについて検討した。その結果、TEM及びTMモードの波形伝搬モードの変化は、空気とは異なる比誘電率を有する絶縁体で覆われた被覆導体の始端及び終端で発生し、導体の中心ではTEMモードのみ現れることが明らかとなった。その変化は導体中心からの離隔距離に依存する。抄録中の「[i]」 …

    The science and engineering review of Doshisha University 55(3), 225-235, 2014-10

    IR  DOI 

  • STOCHASTIC CHARACTERISTIC OF EARTHQUAKE MOTION PHASE AND AMPLITUDE DAMPING DERIVED FROM ITS SELF-SIMILARITY HYPOTHESIS  [in Japanese]

    SATO Tadanobu

    地震動位相を線形位相遅れとそれからの変動部に分解したときに,波動が伝播する媒質の不均質性に内在する自己相似性が,位相変動部における低振動数側での位相の増加傾向と高振動数側でのそれとの間に相似性を発現させるという仮説を立て,それから必然的に導出される位相の確率特性を数理的に明らかにし,最も単純な場合に,それが非整数ブラウン運動過程としてモデル化できることを示す.この結果が,実地震動位相の解析を通して …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 70(3), 463-473, 2014

    J-STAGE 

  • EVALUATION OF DYNAMIC BEHAVIOR OF TWO-STORIED TRADITIONAL WOODEN FRAMES AGAINST PULSE-LIKE GROUND MOTIONS  [in Japanese]

    SUGINO Mina , NAKANISHI Toya , MORIYA Yuki , TAKIYAMA Noriko , HAYASHI Yasuhiro

    … The objectives of this study are to analyze the dynamic behavior and to evaluate the maximum response of two-storied traditional wooden buildings against pulse-like ground motions. … Based on the experiment, we suggest the simplified evaluation method of maximum deformation which is evaluated from equivalent natural period of building, period and displacement of input pulse wave using response spectrum. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 79(700), 801-809, 2014

    J-STAGE 

  • RESPONSE CHARACTERISTICS EVALUATION OF ELASTIC SHEAR BEAM FOR PULSE WAVES  [in Japanese]

    MINAMI Hiroyuki , HAYASHI Yasuhiro

    … The objects of this paper are to comprehend the response characteristics of buildings and subsurface ground for pulse-like ground motions, and to clarify the generating mechanism of the distinctive responses. … To achive the objects, we analyze the responses of uniform elastic shear beam for simple pulse waves (sinusoidal pulse and Ricker wavelet), with modal analysis and wave propagation theory. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 78(685), 453-460, 2013

    J-STAGE 

  • Visualization of Interface in Sliding Friction of Polymer Gels  [in Japanese]

    YAMAGUCHI Tstsuo

    … When the gel is slid against a rigid substrate, formation of pulse-like detachment waves is observed, and the dynamical patterns of the detachment waves drastically change with the sliding velocity. …

    NIPPON GOMU KYOKAISHI 85(10), 319-323, 2012-10-15

    J-STAGE  References (11)

  • THEORETICAL SOLUTIONS AND RESPONSE PROPERTIES OF MAXIMUM RESPONSE OF A SINGLE-DEGREE-OF-FREEDOM SYSTEM FOR PULSE-WAVE GROUND MOTIONS  [in Japanese]

    YASUI Masaaki , NISHIKAGE Taketomo , MIKAMI Tomohiro , KAMEI Isao , SUZUKI Kyohei , HAYASHI Yasuhiro

    … It is suggested that the pulse-like ground motions, in the near-fault region, have great impact on the building seismic design. … However, the theoretical study on the building response to the pulse-like ground motions input is not sufficiently clarified yet. … Based on that, the theoretical solutions of response spectra, with single-degree-of-freedom system subject to the sinusoidal pulse input, are performed. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (650), 731, 2010-04

    J-STAGE  AIJ 

  • EVALUATION BASED ON MODAL ANALYSIS OF RESPONSE DRIFT IN MDOF SYSTEMS SUBJECTED TO PULSE WAVE GROUND MOTIONS  [in Japanese]

    KAMEI Isao , SATO Kotaro , HAYASHI Yasuhiro

    … The response of buildings subjected to near-source pulse-like ground motions may be severe damaging than that subjected to ordinary ground motions. … Particularly, for tall,long-period buildings, large drift response will occur because of it's higher mode excitation caused by distinct velocity pulse input under large earthquake. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (649), 567, 2010-03

    J-STAGE  AIJ 

  • 701 Reflection of an Impulsive SH-wave at a Moving Edge  [in Japanese]

    WATANABE Kazumi

    Wave reflection at a moving surface edge of an elastic solid is discussed. … Its solution procedure is slightly different from the standard Cagniard-de Hoop technique, but time-development of wave front shape is extracted exactly. … In addition to the regular reflected wave, a pulse-like wave is found. …

    The Proceedings of the Materials and Mechanics Conference 2010(0), 410-411, 2010

    J-STAGE 

  • 21504 Non-stationary Property of Niigata-ken Chuetsu-oki Earthquake on Kashiwazaki-Kariwa Nuclear Power Plants : Occurrence mechanism of Pulse-like wave  [in Japanese]

    KAMAGATA Shuichi

    Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants (2009), 1007-1008, 2009-07-20

    AIJ 

  • Characteristics of Infrasound and Seismic Signals Associated with Eruptions at Showa Crater of Sakurajima Volcano  [in Japanese]

    横尾 亮彦 , 為栗 健

    桜島昭和火口で2009年2月縲・月に発生した噴火のうち,空気振動波形の明瞭な81イベントについて空気振動波形と地震波形のスタッキング処理を行い,それぞれの特徴抽出を行った。空気振動波形については,大振幅で急速な圧力上昇で特徴付けられる主要相に前駆して,微弱で緩慢な圧力上昇のある先行相が認められた。この先行相には継続時間や波形にバリエーションがあることも確認できた。地震波形の先頭部分には特徴的な3つ …

    京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B 52(B), 309-318, 2009-06-01

    IR 

  • Realization of Left-Handed Metamaterials With Clustered Dielectric Particles  [in Japanese]

    Caloz Christophe. , Horii Yasushi , Coulombe Martin , Rennings Andre

    本報告では,2個の微小誘電体キューブからなるセルを一定間隔で配置した構造が,左手系特性を示すことを新たに報告する.この構造は,個々の高誘電体キューブを原子と見たてれば,原子が集合して1つの分子状のセルを作り出しているように見えることから,Clustered Dielectric Particle (CDP)と呼ぶ.ここでは,このCDPにより構成された左手系メタマテリアルを平行平板で挟んだ構造,およ …

    IEICE technical report 106(186), 47-51, 2006-07-27

  • Realization of Left-Handed Metamaterials With Clustered Dielectric Particles  [in Japanese]

    CALOZ Christophe. , HORII Yasushi , COULOMBE Martin , RENNINGS Andre

    本報告では,2個の微小誘電体キューブからなるセルを一定間隔で配置した構造が,左手系特性を示すことを新たに報告する.この構造は,個々の高誘電体キューブを原子と見たてれば,原子が集合して1つの分子状のセルを作り出しているように見えることから,Clustered Dielectric Particle (CDP)と呼ぶ.ここでは,このCDPにより構成された左手系メタマテリアルを平行平板で挟んだ構造,およ …

    IEICE technical report 106(187), 47-51, 2006-07-20

    References (8)

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