Kou kouzou rombunshuu
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1884-0329
PRINT ISSN: 1880-9928

Kou kouzou rombunshuu Vol. 26 (2019), No. 103

  • FUNDAMENTAL STUDY ON REDUCTION OF STEEL MAIN GIRDER REINFORCEMENT FOR RC SLAB REPLACEMENT UNDER HALF-WIDTH IN SERVICE CONSTRUCTION AND COMPOSITE ACTION BETWEEN SLAB DECK AND GIRDERS

    pp. 103_1-103_14

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.103_1

    Deteriorated RC slab deck of steel girder bridge is necessary to replace under half - width service construction for short time in Japan. Therefore it tends to replace composite RC deck to non-composite Precast PC deck, however, reinforcement of the main girders is required. In this study, frame analysis is conducted to confirm and to suggest a method to reduce reinforcement for girder. In addition, FEM analysis is conducted to evaluate the composite action between deck and girder. As a result of frame analysis, the amount of girder’s reinforcement could be reduced by taking cross-beam before combine the Precast PC deck in transverse direction. As a result of FEM analysis, the main girder with the Precast PC deck showed the incomplete composite action.
  • STRENGTHENING EFFECTS OF CIRCUMFERENTIAL CFRP LAYERS FOR THIN-WALLED STEEL CYLINDERS UNDER AXIAL COMPRESSION

    pp. 103_15-103_29

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.103_15

    Recently, the security and integrity of large thin-walled steel cylinders (TSCs) have been threatened by an increasing number of high-magnitude earthquakes. To develop a sustainable economy and infrastructure, existing tanks must be strengthened. In this study, we investigate the strengthening effects of circumferential CFRP layers on the increasing load-carrying capacities of TSCs under compressive load through finite element analysis (FEA) and experiments. The results show that circumferential CFRP layers, particularly high-strength CFRP sheets, can increase the load-carrying capacity of TSCs. In addition, numerical results are found to correspond well with experimental results.
  • FATIGUE DAMAGE EVALUATION OF BELLOWS DAMPER ON LIVE LOAD

    pp. 103_31-103_43

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.103_31

    Seismic bellows dampers, which are connected between girder and abutment, are subjected to girder bending rotations due to live load. Since their occurrence frequencies are very high even though stresses due to live load are small, high-cycle fatigue properties of dampers must be examined. Fatigue properties of bellows dampers are evaluated based on high cycle fatigue tests and finite-element analyses (FEA). Firstly, bending rotation angles of girder end parts are calculated using fatigue-load (F-load), which is used for fatigue evaluation of road bridge design. Using the obtained rotation angles, stresses of bellows dampers are calculated by three-dimensional FEA models. Fatigue strength of bellows dampers is examined by high-cycle fatigue tests of bellows damper specimens. Fatigue strength of bellows dampers for live load is evaluated by test results and calculation results based on fatigue design of road bridge specification.
  • HYSTERESIS MODEL AND SEISMIC RESPONSE CHARACTERISTIC OF HYSTERESIS DAMPER USING BENT STEEL PLATES FOR BASE-ISOLATED STRUCTURES

    pp. 103_45-103_54

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.103_45

    In this study, a hysteresis model of hysteresis dampers using bent steel plates for base-isolated structu res (BSPD) is proposed. The BSPD comprise four bent steel plates bent into a trapezoid. The bent steel plates are connected together in the shape of a cross. Since the mechanical behavior of the BSPD depends on the shape of the bent steel plates, the influence of the shape on the seismic response characteristics of base-isolated structures is investigated.

Article Access Ranking

24 Sep. (Last 30 Days)

  1. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  2. Recent Progress of Instrumentation Technology for Process Automation in Steel Industry Tetsu-to-Hagané Vol.106(2020), No.9
  3. Accuracy Improvement of the XRD-Rietveld Method for the Quantification of Crystalline Phases in Iron Sintered Ores through the Correction of Micro-absorption Effects ISIJ International Advance Publication
  4. Melting Erosion Failure Mechanism of Tuyere in Blast Furnace ISIJ International Advance Publication
  5. Evaluation and Prediction of Blast Furnace Status Based on Big Data Platform of Ironmaking and Data Mining ISIJ International Advance Publication
  6. An Empirical Comparative Study of Renewable Biochar and Fossil Carbon as Carburizer in Steelmaking ISIJ International Advance Publication
  7. Potential Influences of Impurities on Properties of Recycled Carbon Steel ISIJ International Advance Publication
  8. Review on the High-Temperature Thermophysical Properties of Continuous Casting Mold Fluxes for Highly Alloyed Steels Tetsu-to-Hagané Advance Publication
  9. Optimization Analysis of Mechanical Performance of Copper Stave with Special-shaped Tubes in the Blast Furnace Bosh ISIJ International Advance Publication
  10. Influence of Soil Particle Size, Covering Thickness, and pH on Soil Corrosion of Carbon Steel ISIJ International Advance Publication

Search Phrase Ranking

24 Sep. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. jeong-sik kim
  5. ultrasonic testing bar small diameter
  6. 柳修介
  7. continuous casting of copper alloys
  8. isij international
  9. tetsu
  10. tetsu-to-hagane