Search Results 1-20 of 3838

  • Influence of eccentric cyclic loading on implant components: Comparison between titanium and zirconia abutments

    NAKANO Ryotaro , HOMMA Shinya , TAKANASHI Takuya , HIRANO Tomoki , FURUYA Yoshitaka , YAJIMA Yasutomo

    … Loading condition was at 2 points assuming axial load and eccentric load. … The reverse torque value reduced after the eccentric load and reduced more in the TZP group than the Ti group. … From the above, the eccentric load may have worse effects than axial loads. …

    Dental Materials Journal 40(1), 235-244, 2021

    J-STAGE 

  • EVALUATION OF STRESS REDISTRIBUTION IN STEEL FRAME AT FIRE BASED ON SCALED 3D STEEL FRAME EXPERIMENTS  [in Japanese]

    SAITO Mami , OKAZAKI Tomohito , KOHNO Mamoru

    … <p> It is well known that even if a heated column collapses in fire, the axial load that the bucked column has sustained can be redistributed to the peripheral members by the shear forces of the beams arraigned in above stories than the fire compartment room. … Thus, a frame having high degree of redundancy can be avoid overall collapse even if some of heated columns lose load carrying capacity. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 86(779), 169-179, 2021

    J-STAGE 

  • COLLAPSE MECHANISM OF STEEL PILES IN LIQUEFIED SOIL BASED ON CENTRIFUGAL TESTS OF SUPERSTRUCTURE-PILE FOUNDATION AND LIQUEFIED SOIL SYSTEM WITH HIGH HEIGHT-TO-WIDTH ASPECT RATIO OF BUILDING  [in Japanese]

    KIMURA Yoshihiro , MATOBA Moeko , TAMURA Shuji

    … <p> Steel piles below high-rise buildings may carry larger varying axial force generated by the overturning moment than those below low- or medium-rise buildings. … The collapse mechanism and the horizontal load bearing capacity of steel piles in the liquefied soil are clarified.</p><p> Fig. 1 shows the model and instruments. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 86(779), 53-63, 2021

    J-STAGE 

  • NUMERICAL ANALYSIS OF STEEL ENCASED PRECAST CONCRETE PILES UNDER ULTIMATE CONDITION  [in Japanese]

    OBARA Taku , KONO Susumu , ASAI Yoichi , KIYA Yoshinobu , GOAN Mitsumaru

    … In Japan, superstructures are designed using working stress design for intermediate earthquakes and a lateral load carrying capacity check for severe earthquakes. … However, the study of numerical model which includes the effect of steel buckling is not investigated when SC piles have high axial force. … In this paper, the numerical analysis by using multi-spring model (hereafter, MS model) was conducted to reproduce the experimental results of five SC piles with axial force ratio, 0~0.35. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 86(779), 117-126, 2021

    J-STAGE 

  • THREE-DIMENSIONAL SEISMIC RESPONSE ANALYSIS METHOD FOR A FRAME CONTAINING MEMBER FAILURE  [in Japanese]

    SHUGYO Minoru

    … A redistribution of member forces, which are axial force, biaxial bending moments, shear force and axial torsional moment, of early fractured low ductile member into the remaining members of the frame is done in each step, therefore, the dynamic response of a frame that contains both low ductile and ductile members can be obtained accurately. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (777), 1441-1448, 2020-11

    J-STAGE  AIJ 

  • COMPARISON BETWEEN SUPERPOSED STRENGTH AND ULTIMATE FLEXURAL STRENGTH OF RECTANGULAR CFT SECTION  [in Japanese]

    KIDO Masae , TSUDA Keigo

    … Numerical calculation based on the theoretical analysis is performed taking the width-to-thickness ratio of steel tube, strengths of steel and concrete and the ultimate strain as the analytical parameters, and moment -axial load interaction relationships are shown. … and 4) ultimate strain of concrete 0.004 and 0.008.</p><p> Relationship between the non-dimensional moment and axial load are shown in Figs. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (777), 1503-1512, 2020-11

    J-STAGE  AIJ 

  • EXPERIMENTAL STUDY ON FIRE RESISTANCE OF CFT COLUMNS WITH FIRE PROTECTION AT THE STANDARD FIRE (PART 1): BEHAVIOR AND LOAD SUPPORT ABILITY OF CFT COLUMNS WITH FIRE PROTECTION USING ORDINARY AND HIGH STRENGTH MATERIAL  [in Japanese]

    YOSHINO Shigeru

    … a cause CFT column with fire protection was recognized as a fire resistance structure with temperature limitations of steel tube, there were few experimental studies on the behavior and the load support ability at the fire.</p><p> In this study, the ratio of the compressive strength of steel tube to the compressive strength of filled concrete at room temperature "axial strength ratio" is proposed as an index to show axial strength in a high temperature of CFT columns with fire …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (774), 1103-1112, 2020-08

    J-STAGE  AIJ  AIJ 

  • AN EXPERIMENTAL STUDY ON DYNAMIC FLEXURAL BUCKLING FOR REINFORCED CONCRETE PILES IN LIQUEFIED SOIL USING CENTRIFUGE TESTS  [in Japanese]

    HAYASHI Kazuhiro , MIYACHI Yuichi , KIMURA Yoshihiro , TAMURA Shuji , SAITO Taiki

    … Therefore, when slender pile is subjected to high axial compression forces as a result of increased vertical loads by overturning moment of superstructure under the strong earthquake, flexural buckling may occur in pile member in soft ground. … Three specimens with soil densities and input waves as variables were tested by uni-axial shaking. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (773), 911-920, 2020-07

    J-STAGE  AIJ 

  • LIMIT CYCLE OF SQUARE CONCRETE FILLED STEEL TUBULAR BEAM-COLUMNS SUBJECTED TO LATERAL LOAD WITH CONSTANT CYCLIC DISPLACEMENT  [in Japanese]

    KIDO Masae , TSUDA Keigo , FUKUMOTO Toshiyuki , ICHINOHE Yasuo , MORITA Koji

    … The objective of this study is to discuss the limit cycle of square CFT beam-columns subjected to cyclic lateral load under constant axial load with constant displacement.</p><p> <b>2. … (20, 14, 10, 8), axial force ratio <i>n</i> … Test results and discussion</b></p><p> Lateral load and rotation angle relationships and the tendency of load deterioration were shown. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (773), 981-991, 2020-07

    J-STAGE  AIJ 

  • Experimental Study of Centrally Loaded Column Composed of Steel Tube, Timber and Grout (Part 3)  [in Japanese]

    中原 浩之 , 陳 逸鴻 , 坂井 実佳子

    … The axial stiffnessand strength deceased according to the increases of the sectional area of the wood. … Theseresults showed that the axial load carrying capacities were estimated by the summation of bucklingstrength of each component. …

    長崎大学大学院工学研究科研究報告 = Reports of Graduate School of Engineering, Nagasaki University 50(95), 13-19, 2020-07

    IR 

  • EXPERIMENTAL STUDY ON STRUCTURAL PERFORMANCE OF R/C COLUMN WITH CLT WING WALLS  [in Japanese]

    SAKASHITA Masanobu , ARAKI Yasuhiro , FUKUYAMA Hiroshi

    … Test specimens showed higher lateral load carrying capacity and ductility despite failure modes of CLT wing walls. … Joint metals and loading method had influence on axial strain distribution of CLT wing wall. …

    AIJ Journal of Technology and Design (63), 573-578, 2020-06

    J-STAGE  AIJ 

  • COLLAPSE MECHANISM AND DISPLACEMENT OF LOW AND MIDDLE-RISE STEEL MOMENT FRAMES UNDER HORIZONTAL BI-DIRECTIONAL GROUND MOTIONS  [in Japanese]

    HIROISHI Koji , ISHIDA Takanori , MASEKI Ryota , NARIHARA Hiroyuki , YAMADA Satoshi

    … <p> Low and middle-rise steel moment frames are generally verified for seismic safety by horizontal load capacity calculation with push-over analysis assuming one-directional force. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (771), 749-758, 2020-05

    J-STAGE  AIJ 

  • ELASTIC SHEAR BUCKLING STRENGTH OF L-SHAPED BEAM-TO-COLUMN JOINT PANELS COMPOSED WITH I-SHAPED MEMBERS  [in Japanese]

    IKARASHI Kikuo , UTSUKI Yuichi , MITSUI Kazuya

    … Also, since a column and a beam are connected to the panels in two directions, the stress distribution changes depending on the load direction. … As a result, the buckling strength of the panels changes depending on the load direction. … Furthermore, the solution, evaluating the shear buckling strength considering the difference in the load direction, is proposed. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (771), 759-769, 2020-05

    J-STAGE  AIJ 

  • EVALUATION OF PΔ EFFECT FOR SYMMETRICAL BRACED FRAMES  [in Japanese]

    KIDO Masae , TSUDA Keigo

    … In absence of axial force <i>P</i>, the rotation angle <i>R</i> … axial load ratios <i>n<sub>y</sub></i> …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (771), 771-778, 2020-05

    J-STAGE  AIJ 

  • ULTIMATE STRENGTH OF CONCRETE FILLED SQUARE STEEL TUBULAR BEAM-COLUMNS:Required conditions for attainment of full plastic moment and framework and issues of strength design  [in Japanese]

    KIDO Masae , TSUDA Keigo , HARAGUCHI Masayuki

    … Introduction</b></p><p> The objective of this study is to propose the axial load ratio <i>n<sub>y</sub></i>-slenderness ratio <sub>s</sub>λ<sub>1</sub> … Analytical work</b></p><p> Analytical model is shown in Figure 1, and concrete filled steel square tubular (CFT) beam-columns are subjected to constant vertical load <i>N</i> …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (769), 415-425, 2020-03

    J-STAGE  AIJ 

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

    SADASUE Kazushi , OGOMORI Hideki

    … However, if we expect the shear resistance in headed studs, the resistance mechanism is changed such that the headed stud is subject to a force (either tensile or compressive) along the axial direction of the stud, which is predicted to produce considerable resistance. …

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

    J-STAGE  AIJ 

  • NUMERICAL SIMULATIONS OF STEEL FLOOR STRUCTURES CONSIDERING LARGE DEFORMATIONS UNDER ELEVATED TEMPERATURES IN FIRES  [in Japanese]

    TAKAGI Jiro , KAWAI Yu , MAKIUCHI Toshiki

    … The principle direction of the shear forces of bolts in beam ends may change with respect to beam sagging and consequently generate tensile axial forces of the beams at elevated temperatures. … However, catenary effect can maintain the vertical load carrying capacity associated with yielding of the reinforcement, given that the reinforcement is perfectly bonded to the slabs.</p><p> 5) The simulations of the one-bay floor structure are conducted under various conditions. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (768), 287-297, 2020-02

    J-STAGE  AIJ 

  • Horizontal loading tests of wooden framed walls for earthquake-resistant improvement using short diagonal members(Part 2)  [in Japanese]

    岩井 哲

    … The diagonal members bear onlycompression force and are expected to perform axial ductility. … The load at the specific deformationof 1/120rad story-drift in elastic region and the ultimate load considering plastic region arecomparable, consequently the wall gives good performance in earthquake resistant improvement.The wall load-magnification was 2.22 and 2.03 for the 1P and 2P specimens, respectively. …

    広島工業大学紀要. 研究編 54, 63-72, 2020-02

    IR 

  • 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 

  • FLEXURAL STRENGTH OF THE STRENGTH-DUCTILITY TYPE SEISMIC RETROFIT TECHNIQUE OF RC COLUMNS USING PC BAR PRESTRESSING AND STEEL PLATES  [in Japanese]

    NAKADA Kozo , YAMAKAWA Tetsuo , JAVADI Pasha , NOORI Mohammad Zahid , KANEDA Kazuo

    … In the proposed method, the strain distribution of the THW column section is divided into three fields, such as field A, B, and C, based on the location of the neutral axis changes according to the axial force levels. … The moment capacity equation is derived by considering the equilibrium of internal tension and compression forces with the external vertical axial load. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (767), 97-104, 2020-01

    J-STAGE  AIJ 

Page Top