Technical developments and trends of earthquake resisting high-strength reinforcing steel bars

Byoungchul Hwang, Jae Hyeok Shim, Myoung Gyu Lee, Joonho Lee, Jun Ho Jung, Bo Sung Kim, Sung Bin Won

Research output: Contribution to journalReview article

13 Citations (Scopus)

Abstract

Since reconstruction of old town in Korea requires high-rise and seismic design construction, many attentions have been paid to high strength seismic reinforced steel bar. In the present paper, technical developments and trends are summarized for developing next-generation seismic reinforced steel bar of grade 700 MPa. Steelmaking process requires high energy efficiency and refining ability. Effects of alloying elements are explained, and alloy design based on computational thermodynamics is introduced. On the other hand, it is considered that grain size refinement by the controlled rolling and low temperature transformation structures formed by the accelerated cooling are effective to obtain acceptable mechanical properties with high strength. Finite element simulation analysis is also useful to understand plastic deformation by rolling, internal and external heat transfer, and corresponding phase transformation of austenite phase to various lowtemperature transformation structures.

Original languageEnglish
Pages (from-to)862-874
Number of pages13
JournalJournal of Korean Institute of Metals and Materials
Volume54
Issue number12
DOIs
Publication statusPublished - 2016 Dec 1

Keywords

  • Computer simulation
  • Metals
  • Seismic design
  • Strength
  • Thermomechanical processing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

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