Modified K&amp;C Model for Numerical Analysis of Steel-Fiber-Reinforced Concrete Structure

Gang-Kyu Park; Minjoo Lee

doi:10.7734/COSEIK.2021.34.2.85

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2021 Vol.34, Issue 2 Preview Page Next Page

Research Paper

Modified K&C Model for Numerical Analysis of Steel-Fiber-Reinforced Concrete Structure 강섬유 보강 콘크리트 구조물의 해석을 위한 K&C모델의 보정

30 April 2021. pp. 85-91

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Abstract

This paper introduces a modified Karagozian & Case concrete model (K&C model) for the numerical analysis of a steel-fiber-reinforced concrete (SFRC) structure subjected to projectile impact. The original K&C model was calibrated to consider the effects of steel fibers accurately by modifying the strength surfaces and input parameters. Single element tests were then conducted and compared with uniaxial and triaxial compressive data to verify the modified model. With the application of a dynamic increase factor, the finite element model of the SFRC structure subjected to projectile impact was constructed. Thereafter, the applicability of the modified material model was examined by comparisons with the experimental results.

Keywords

K&C model

steel-fiber-reinforced concrete

finite element model

dynamic analysis

본 연구에서는 섬유보강콘크리트(SFRC) 구조물의 수치해석을 위한 K&C모델의 보정기법을 소개하였다. SFRC 1축 및 3축 압축강도 실험결과를 기반으로 보정을 수행하였으며, 단일요소 해석결과를 실험결과와 비교함으로써 보정 기법의 검증을 수행하였다. 또한, 변형률 속도의 영향을 반형하기 위해 동적증가계수(DIF)를 고려하여 SFRC 구조물의 발사체 관통해석을 수행함으로써 보정기법의 적용 가능성을 확인하였다.

키워드

K&C모델

강섬유보강 콘크리트

유한요소해석

동적 해석

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 34
No :2
Pages :85-91
Received Date : 2020-11-30
Revised Date : 2020-12-21
Accepted Date : 2020-12-22
DOI :https://doi.org/10.7734/COSEIK.2021.34.2.85

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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