Search Results 1-20 of 918

  • ULTIMATE SHEAR STRENGTH OF INCLINED HEADED STUDS  [in Japanese]

    SADASUE Kazushi , OGOMORI Hideki

    … Therefore, it is hypothesized that composite beams using inclined headed studs would improve shear stiffness and strength.</p><p> We proposed an appropriate arrangement and direction of inclined headed studs for beams subjected to unidirectional loading and for girders subjected to a positive–negative cyclic load. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (769), 403-413, 2020-03

    J-STAGE  AIJ 

  • HYSTERESIS CURVE MODEL FOR KYOTO MUD WALL BASED ON CYCLIC LOADING TESTS  [in Japanese]

    MURAMOTO Makoto , GORAI Takaaki

    … The hysteresis model of the mud wall has three curves of virgin load curve, return curve and reloading curve. … In the previous model, it was necessary to adjust the parameter of the curve equation individually based on the experiment.</p><p> In this paper, we propose a hysteresis model with the maximum load point as a parameter. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 229-239, 2020-02

    J-STAGE  AIJ 

  • Experimental Investigation on Seismic Resistance of RC Shear Walls with CFRP Bars in Boundary Elements

    Zhao Jun , Shen Fuqiang , Si Chenzhe , Sun Yuping , Yin Lu

    … Six RC shear walls reinforced with CFRP bars as longitudinal tensile materials in boundary elements were tested under reversed cyclic lateral loading while subjected to constant axial compression with different axial load ratios of 0.17, 0.26 and 0.33, respectively. … Two forms of stirrups were used for each axial load ratio, which were rectangular and circular stirrups in boundary elements. …

    International Journal of Concrete Structures and Materials 14(1), 4, 2020-01-10

    IR 

  • EVALUATION ON PLASTIC DEFORMATION CAPACITY OF STEEL BEAM ENDS WITH LOCAL BUCKLING AND FRACTURE UNDER CYCLIC LOADING USING FE ANALYSIS  [in Japanese]

    SAWAMOTO Yoshikazu , KUBOTA Jun , OHSAKI Makoto

    … To prevent damage under such ground motion, evaluation on deformation capacity of steel member (welded beam end, etc.) has been required under multi-cycle loading.</p><p> In this paper, deformation capacity of the steel beam with local buckling and ductile fracture is assessed by the FE analysis based on the fracture rule (cyclic damage rule and monotonic damage rule) and recontact of removed element. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (767), 105-115, 2020-01

    J-STAGE  AIJ 

  • EVALUATION OF BOND STRESS OF CUT-OFF SECOND LAYER LONGITUDINAL BARS WITH ADDITIONAL STIRRUPS IN HIGH-STRENGTH REINFORCED CONCRETE BEAMS  [in Japanese]

    HIBINO Yo , ICHINOSE Toshikatsu , MIYATA Hideki , YAGI Shigeharu , KUSUHARA Fumio

    … In this study, to assess failure behavior, seismic performance of reinforced concrete beams having cut-off longitudinal bars with high-strength concrete and steels, test of beams which reinforcement ratio are 0.3−1.2% were carried out. … Additional stirrups were installed to prevent crack around the head of the cut-off longitudinal bars.</p><p> For the test, four-teen 1/2.5-scaled test specimens of reinforced concrete beams were fabricated. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 85(770), 551-561, 2020

    J-STAGE 

  • FIBER PULL-OUT RESISTANCE BEHAVIOR SUBJECTED TO MONOTONIC AND CYCLIC LOADINGS  [in Japanese]

    NAKAYA Yasuhiro , KUNIEDA Minoru

    <p> 繰返し荷重下における繊維の引抜き抵抗挙動の評価を目的として,ポリプロピレン(PP)繊維と鋼繊維を対象とした試験を行った.PP繊維は繰返し荷重を受けることで繊維表面が損傷し破断するものや,マトリクスに割裂ひび割れが生じ,引抜き抵抗力が低下するものが確認された.鋼繊維では繰返し載荷における除荷過程と再載荷過程において,引張方向及び圧縮方向の双方向において摩擦付着力による抵抗挙動が確 …

    Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures) 76(2), 55-64, 2020

    J-STAGE 

  • Behavior of single spherical sliding bearing under live load action  [in Japanese]

    Oyabu Hirofumi , Fujikura Shuichi , Maezuru Natsumi , Nguyen Minh Hai , Nakajima Akinori

    … Therefore, this study investigated the behavior of the SSB under live load actions by static cyclic loading tests on a bridge superstructure model supported by single SSBs. …

    Journal of Structural Engineering, A 66A(0), 274-282, 2020

    J-STAGE 

  • DEM analysis of undrained cyclic simple shear test on saturated sand

    Jiang Mingjing , Shen Zhenyi , Sun Ruohan

    … <p>Liquefaction can be considered to occur in saturated sand widely under seismic load, which will cause serious disaster, including road damage, ground subsidence, cracking of houses. … For this aim, the undrained simple shear test on saturated sand under cyclic loading were simulated by three-dimensional distinct element method (DEM), where the stress-strain relationship, excess pore pressure ratio, mechanical coordination number and contact normal direction were analyzed. …

    Japanese Geotechnical Society Special Publication 8(12), 485-488, 2020

    J-STAGE 

  • LATERAL STRENGTH OF EMBEDDED SHS COLUMN BASE REINFORCED WITH U-SHAPED REBARS  [in Japanese]

    MAEDA Sumika , TANAKA Tsuyoshi , ASADA Hayato , HIRANO Kimihiro

    Cyclic lateral loading tests were performed with SHS column-grade beam sub-assemblages to investigate the cyclic responses including failure modes and ultimate resistances with emphasizing on contribution of rebars to the lateral resistance. … A total of 13 specimens were tested, with embedment lengths of column, the amount of U-shaped and hoop rebars and the spacing between the rebar and column in the loading direction taken as key test parameters (See Table 1, Figs. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (766), 1613-1620, 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. … In the experiment, fracture behavior of the circular column and its lateral load-displacement was investigated using three types of reinforcing bar, which has 6, 8 and 10 mm of the diameter. …

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

    IR  DOI 

  • STUDY ON STABILITY IN SLIDING OF BEARINGS SUPPORTING LARGE-SPAN STEEL ROOFS  [in Japanese]

    YAMASHITA Tetsuo , WADA Naoki

    … Moreover, in our experimental study to reproduce the damage, a test body did not slide and large rotation arose. … Based on these observations, we conducted further experimental study to investigate the conditions on stability of slide.</p><p> Six full-scale tests were conducted where the three influential conditions, the eccentricity of the horizontal force line, the pre-tension of anchor bolts and the vertical constant load were parametrically changed and combined. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (763), 1251-1258, 2019-09

    J-STAGE  AIJ 

  • Test on Frictional Conection betwen Stel Plates by Vise with High Hardnes Screw Bolt  [in Japanese]

    中原 浩之 , 川添 法明 , 廣田 周一郎

    … On the other hands, the vices are very convenient connecting devices for steel members, but there are uncertainties to use the vice for building structure contemporary due to the relaxation of the joint under large deformation, repetitive load and long term periods . … A simple tensile test has been conducted to investigate the basic performance of the connection of the vice. …

    長崎大学大学院工学研究科研究報告 49(93), 1-7, 2019-08

    IR 

  • STRUCTURAL PERFORMANCE OF INTERIOR BEAM-COLUMN CONNECTIONS IN STEEL CONCRETE COLUMN-STEEL BEAM COMPOSITE STRUCTURES  [in Japanese]

    SADASUE Kazushi , KITANO Atsunori

    … Next, for practical application of this new structural system, it is necessary to examine the structural performance for beam-column connections, and propose the design method.</p><p> In this paper, we confirmed the mechanical behavior of interior beam-column connections for steel concrete column-steel beam structures through the structural tests under the constant axial compression force and the cyclic horizontal load. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (761), 1001-1010, 2019-07

    J-STAGE  AIJ 

  • PERFORMANCE OF STEEL COMPOSITE CONCRETE PILE WITH HIGH TOUGHNESS USING AN INNER STEEL TUBE  [in Japanese]

    HOMMA Yusuke , ASAI Yoichi , YAMAJI Mami , KOUME Shimpei , SAKAGAMI Koji

    … The inner steel tube restricts peel-off of concrete in the steel tube during crushing, which is an issue with the SC pile, and enhances the constraining effect of concrete thereby improving the deformation capacity of the WSC pile.</p><p> This paper reports a series of bending shear tests performed to study the deformation capacity of WSC pile under high compressive load and axial tensile load. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (760), 819-829, 2019-06

    J-STAGE  AIJ 

  • DAMAGE ANALYSIS OF RC SLAB WITH REINFORCING STEEL PLATE FOCUSING HORIZONTAL CRACK  [in Japanese]

    南波 謙太

    … A wheel load running test was simulated. … Horizontal cracks occurred due to bond failure between lower rebar and cover concrete, and it was thought that the horizontal cracks develop along rebars due to the vertical strain caused by cyclic moving load. …

    法政大学大学院紀要. デザイン工学研究科編 (8), 1-8, 2019-03-24

    IR  DOI 

  • A STUDY ON IMPROVEMENT METHOD LEAVING HOLLOW PART WITH STEEL & COMPOSITE PILES IN CONSIDERING WORKABILITY:Study on improvement in deformation capacity of steel & concrete composite pile  [in Japanese]

    TANAKA Yujiro , SEKIGUCHI Toru , TSUKAGOSHI Toshihiro

    … Therefore, the test data accumulation is not enough to discuss the deformation performance of pile.<br> In the previous study, we confirmed that filling the hollow part of the SC pile with reinforcement was effective for improving the deformation performance. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (756), 205-215, 2019-02

    J-STAGE  AIJ 

  • EXPERIMENTAL STUDY ON SHEARING BEHAVIOR OF CFT SHORT COLUMN WITH DIAPHRAGM  [in Japanese]

    中原 浩之 , 池田 啓悟

    … In order to observe the shearing behavior of the real CFT columns in building structures, the 12 column specimens with diaphragm have been tested under cyclic shearing force. … The test results of the yield strength and the shearing capacity are discussed through investigation of the obtained load vs. deformation relations. …

    長崎大学大学院工学研究科研究報告 49(92), 43-49, 2019-01

    IR 

  • Fatigue property improving effect of low carbon steel S25C by surface modification technique Scanning Cyclic Press  [in Japanese]

    TANNO Ryoko , FUJIMURA Nao , NAKAMURA Takashi , TAKAHASHI Kosuke

    … <p>In this study, we applied a new surface modification technique, scanning cyclic press (SCP) to machined specimens of low carbon steel S25C. … In the SCP process, a vibrating indenter scans the metal surface and cyclically applies a variable low compressive load to modify the microstructure at the surface. …

    The Proceedings of the Materials and Mechanics Conference 2019(0), PS01, 2019

    J-STAGE 

  • Viscoelastic and viscoplastic deformation behavior of polyamide and its short fiber-reinforced composite and prediction  [in Japanese]

    YATSU Kotaro , KAWAI Masamichi

    … <p>Creep and creep recovery behaviors of a thermoplastic resin have been examined for different load histories in order to establish a model for the inelastic behavior of its short fiber reinforced composites. … The creep recovery test results for the resin show that recovery strain tends to increase with increasing prior creep stress as well as with increasing prior creep time. …

    The Proceedings of the Materials and Mechanics Conference 2019(0), OS1911, 2019

    J-STAGE 

  • Buckling evaluation method of Mod. 9Cr-1Mo steel cylinder under horizontal and vertical loads:(2nd report: Effects of cyclic loading and interactions of axial, bending, and shear buckling )  [in Japanese]

    OKAFUJI Takashi , MIURA Kazuhiro , SAGO Hiromi , MURAKAMI Hisatomo , ANDO Masanori , MIYAZAKI Masashi

    … The buckling mode and strength data in the load region where the interaction of axial compression, bending and shear buckling could occur, and the effect of repeated vertical load under a constant horizontal load were examined through the series of tests. … As a result, it was confirmed that the evaluation by the proposed formula was conservative for the buckling load of the test. …

    The Proceedings of the Materials and Mechanics Conference 2019(0), OS1314, 2019

    J-STAGE 

Page Top