Search Results 1-20 of 471

  • Comparison of Strength Paremeters by Ring Shear Test and Back Analysis Method for Stability Evaluation of Reactivated Landslides:- In the Case of Landslide on Road Slope 40 Years Passed since the Start of Service -  [in Japanese]

    KANEKO Masahiro , KOYAMA Atsushi , SHITANO Munehiko , HADA Jiro , SUZUKI Motoyuki

    <p>山口県美祢市における道路開削工事中に発生した地すべりは,有識者委員会の検討結果から切土勾配<i>i</i>=1:2.0にする排土案となり,この切土形状により供用開始後も長期にわたり安定していた。しかし,供用後40年が経過した時点で再び地すべりが発生した。過去に地すべりが発生していることと,その兆候から,当該地すべりブロックは滑動と休止を繰返しているため,す …

    Japanese Geotechnical Journal 16(1), 49-61, 2021

    J-STAGE 

  • Study of Internal Waste Dump-Induced Shear Stress Behavior on Pit-Slope

    Sugeng Wahyudi , Shimada Hideki , Sasaoka Takashi , Hamanaka Akihiro , Amarsaikhan Tsedendorj , Mao Pisith , Tumelo K. M. Dintwe , Moses Dyson

    … This zone is known as dynamic reactive zone which is easy to deform by external force, and inherent dangers of failure posing a threat to slope. … Therefore, it is paramount to study the induced shear stress behavior in this zone particularly when IWD method is adopted within this zone. … In this paper, a numerical study for investigating IWD-induced shear stress behavior has been carried out using Finite Element Method (FEM) with Strength Reduction approach. …

    Journal of Geoscience and Environment Protection 8(4), 71-86, 2020-04-21

    IR 

  • 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

    … Since it involves stiff cores, most of seismic force acting on wooden parts is sustained by the cores, and wide open space with less shear walls is realized. … Although the model can simulate displacement mode of horizontal hybrid structure having various arrangement of shear walls, the structure is assumed to be linearly elastic. … While allowable strength design is conducted using elastic model, wooden structures generally have non-linearity even in small deformation. …

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

    J-STAGE  AIJ 

  • Experimental approach for understanding the dynamic behaviors of bentonite buffer piping erosion

    ISHII Tomoko , KAWAKUBO Masahiro , KOBAYASHI Ichizo , NIIBORI Yuichi

    … In this study, the dynamic behaviors of piping erosion were experimentally investigated. … Such behaviors indicate that the shear stress due to water flow locally exceeded the swelled bentonite's shear strength. …

    Mechanical Engineering Journal 7(3), 19-00469-19-00469, 2020

    J-STAGE 

  • Microstructure Evolution and Mechanical Properties of AZ31 Alloy with Accumulative Roll Bonding

    Huang Liangshun , Pei Xiaobin , Luo Lan , Rao Xixin , Jing Yuhai , Liu Yong

    … Grain refinement is achieved by dynamic recrystallization (DRX), and fine DRXed grains formed the shear band in the direction of shear stress. … The microhardness of inner plate was higher than that of outer plate due to the softening effect caused by the formation of shear bands. …

    MATERIALS TRANSACTIONS 61(5), 893-902, 2020

    J-STAGE 

  • Evaluation of shear moduli of premature age of ultra-fine particle cement modified sand with various water-cement ratio

    Hyodo Taichi , Tsukamoto Yoshimichi , Hashimoto Kazuyoshi , Arai Yasuhito , Kakegawa Tomohito

    … On the other hand, with in regard to cement-based solidifying materials, although sufficient long-term strength is exerted, permeability is low, and injection into sand having fine particles is insufficient. … The authors used the ultra-fine particle cement to change the water-cement ratio and investigate the dynamic deformation coefficient using a bender element test device. …

    Japanese Geotechnical Society Special Publication 8(13), 536-540, 2020

    J-STAGE 

  • SEISMIC RESPONSE CONTROL OF STRUCTURES USING LINKED FLUID INERTIA MASS DAMPER:- Shaking table test of a two story light-gauge cold-formed steel frame -  [in Japanese]

    SODA Satsuya , WATAI Kazuki , WAKITA Takehiro , MIYAZU Yuji

    … In addition, normal structural plywood shear walls are installed in the frame orthogonal to shaking direction to minimize deflection in that direction. … In this shaking table test, we compare the test results of basic frame and those of the frame with LFIMD.<br> First, we study dynamic characteristics with/without the damper. … The tendency becomes more prominent as the yield strength ratio of the first story becomes smaller. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (757), 351-360, 2019-03

    J-STAGE  AIJ 

  • EXPERIMENTAL APPROACH FOR UNDERSTANDING THE DYNAMIC BEHAVIORS OF BENTONITE BUFFER PIPING EROSION

    Ishii Tomoko , Kawakubo Masahiro , Kobayashi Ichizo , Niibori Yuichi

    … This study examined the dynamic behaviors of the piping erosion experimentally. … These mean that the shear stress due to the water flow locally exceeded the shear strength of swelled bentonite and the piping erosion proceeded with a simple regularity. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1765, 2019

    J-STAGE 

  • A STUDY ON SHEAR PERFORMANCE OF GABLE ROOF FRAME IN TRADITIONAL WOODEN BUILDING  [in Japanese]

    YAMAZAKI Yoshihiro , NEMOTO Kaho , ISODA Hiroshi , ARAKI Yasuhiro , SAKATA Hiroyasu

    … In addition, the roof frame is boarding diaphragm consisting of narrow boards fastened by nails, which is thought to have low shear stiffness and strength unlike plywood sheathing floor diaphragm.</p><p> A roof frame works as horizontal diaphragm transmitting lateral force to shear walls. … In the current allowable stress design, stress distribution of a floor diaphragm is calculated using continuous shear beam. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 84(765), 1453-1463, 2019

    J-STAGE 

  • Development of magnetorheological compound and its application to vibration isolator  [in Japanese]

    SHIMIZU Takahiro , KOMATSUZAKI Toshihiko , INOUE Toshio

    … <p>Magnetorheological fluid (MRF) is known as one of functional fluids, whose rheological properties can be controlled by the applied magnetic field strength. … However, sedimentation of the magnetic particles of MRF will result in unsteady dynamic behaviors of the MR devices. … The effects of the magnetic field strength and the shear rate on the resultant viscosity change of the prepared MRC samples were investigated experimentally. …

    The Proceedings of Conference of Hokuriku-Shinetsu Branch 2019.56(0), J012, 2019

    J-STAGE 

  • Matric suction and stiffness measurement on soil containing fines at low stress state

    Suwal Laxmi P. , Kuwano Reiko

    … <p>Matric suction significantly attributes on both strength and stiffness of the geomaterials. … Both compressional and shear waves velocities are measured in conjunction with an associated matric suction at low stress level that replicates the soil behavior of the shallow depth. … The small strain stiffness as well as dynamic properties seems to be affected by the moisture condition in the soil.</p> …

    Japanese Geotechnical Society Special Publication 7(2), 297-304, 2019

    J-STAGE 

  • Seismic Behavior of CLT Shear Walls Connected with Tensile Bolted Joints and Screwed Steel Joints  [in Japanese]

    Zhang Yunxiang , Kobayashi Kenji , Yasumura Motoi

    <p>CLTパネル脚部の接合部の仕様を引きボルトとしたもの,およびビス留め金物のみとしたものについて,小幅CLT耐力壁の静的水平加力実験および仮動的水平加力実験を行い,これらの接合部の違いがCLT耐力壁の力学特性および地震時挙動に及ぼす影響について調べることにより,ビス留め金物接合の変形性能を考慮した合理的な耐力壁の可能性について検討した。また,時刻歴地震応答解析の結果を実験結果と比較 …

    Mokuzai Gakkaishi 65(2), 71-82, 2019

    IR  J-STAGE 

  • Mechanical Properties of Components of Nepalese Historical Masonry Buildings

    Mishra Chhabi , Yamaguchi Kentaro , Endo Yohei , Hanazato Toshikazu

    … Results showed that the average compressive strength and Young's modulus of unit bricks, mud mortar, and masonry prisms were 5.05 N/mm^2, 1.40 N/mm^2, and 1.70 N/mm^2, and 4.30 x 10^3 N/mm^2, 1.17x 10^3 N/mm^2, and 3.10 x 10^2 N/mm^2, respectively. … Similarly, the average value of shear strength and shear deformation angle of masonry wall were 0.054 N/mm^2 and, 4.46x10^-2 rad., respectively. …

    Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES) (4), 118-123, 2018-10-18

    IR  DOI 

  • CYCLIC LOADING TESTS ON STEEL ROOF BEARINGS AND EFFECTS ON ROOF RESPONSES  [in Japanese]

    INABA Yusuke , TERAZAWA Yuki , MATSUI Ryota , KUMAGAI Tomohiko , TAKEUCHI Toru

    … In this paper, a PTFE sliding bearing, a friction damper bearing and a rubber sheet bearing with thick leveling mortar are fabricated and dynamic loading tests are carried out. … First, dynamic loading tests are carried out by applying sine waves with various amplitudes and frequencies, followed by ultimate loading tests.<br> <b>3. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (750), 1129-1137, 2018-08

    J-STAGE  AIJ 

  • A NEW EVALUATION METHOD FOR YIELDING FORCE OF LEAD RUBBER BEARINGS UNDER CYCLIC LOADING  [in Japanese]

    WAKE Tomotaka , KIKUCHI Masaru , ISHII Ken , KUROSHIMA Yohei , NAKAMURA Takahito

    … The strength of lead rubber bearings (LRBs) can be reduced by “lead plug heating” … First, the dependency tests for shear strain, shear strain rate, and environmental temperature, were carried out on the RB specimens (Tables 2, 3). … From the above tests, it becomes clear that there is a close correlation between the yield stress of the lead plug and the temperature when considered per shear strain rate classification. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (750), 1105-1115, 2018-08

    J-STAGE  AIJ 

  • DESIGN METHOD OF BUILDING STEEL STRUCTURES FOR REUSE:-Seismic performance of braces in the longitudinal direction considering damage-  [in Japanese]

    FUJITA Masanori , YOSHIOKA Rei , NAKAZAWA Syoji , KATO Shiro

    … Between a dynamic ductility index of structure and reduction ratio of structural members are discussed by seismic response analysis. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (748), 903-911, 2018-06

    J-STAGE  AIJ 

  • A Comparison between the Dynamic Behaviour of Flexible Dual Row Walls Founded in Dry and Liquefiable Sands

    S. S. C. MADABHUSHI , S. K. HAIGH

    … However, loss of soil strength and stiffness from earthquake induced liquefaction is a prospective design concern. … Centrifuge modelling provides an avenue to explore the dynamic behaviour. … Dynamic testing of small scale centrifuge models of the dual row wall systems, founded in dry and liquefiable sands is detailed. … Recorded wall and soil accelerations are considered and the impact of excess pore pressure generation on the shear stress transmission highlighted. …

    Proceedings of the International Conference on Press-in Engineering 1(0), 265-272, 2018

    J-STAGE 

  • Usefulness of FEM Analysis: Comparison with the Experimental Results of Woven Fabric CFRP Cylinders under Axial Impact Compressive Load  [in Japanese]

    SUGIMOTO Nao , BEN Goichi , HIRAYAMA Norio

    … Consequently, researchers are attempting to apply high-strength and lightweight FRP (fiber reinforced plastic) and FRTP (fiber reinforced thermoplastic) to automobile structures. … Besides reducing the weight, the collision safety of automobiles, which is also a very important issue, should be ensured though investigation of the dynamic properties of FRP and FRTP. …

    Journal of the Japan Society for Composite Materials 44(6), 242-249, 2018

    J-STAGE 

  • Development of New Techniques for Enhancing Measurement Performance of Rheological Properties  [in Japanese]

    Hirano Taichi

    … In addition, it may be a measure of strength of molecular motions and their interactions. …

    Nihon Reoroji Gakkaishi 46(5), 203-206, 2018

    J-STAGE 

  • EFFECTS OF INITIAL STATIC SHEAR STRESS AND CONFINING PRESSURE ON CYCLIC SHEAR STRENGTH CHARACTERISTICS OF EMBANKMENT SOILS OF RESERVOIRS  [in Japanese]

    KOYAMA Atsushi , SUZUKI Motoyuki , KAMIKI Yuichi

    2013年より全国で危険ため池に対する一斉点検が実施されてきた.地震時における堤体の強度評価の一つとして,非排水繰返し三軸試験が適用されるケースがある.通常,堤体法面には静的な初期せん断応力が作用しており,堤体の耐震性評価において低拘束圧下で初期せん断応力の影響を受けた状態での動的強度特性を考慮することが重要である.本研究では,物理特性の異なる堤体土を用いて,初期せん断応力が堤体土の非排水繰返しせ …

    Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 74(4), 500-512, 2018

    J-STAGE 

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