Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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A Calibration Method of the CSC Model for Considering Material Properties of Ultra-high Performance Concrete

초고성능 강섬유 보강 콘크리트 물성 반영을 위한 소성 기반 콘크리트 CSC 모델 보정기법

  • Gang-Kyu, Park (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • MinJoo, Lee (Civil and Environmental Engineering, KAIST) ;
  • Sung-Wook, Kim (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Hyun-Seop, Shin (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Jae Heum, Moon (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology)
  • 박강규 (한국건설기술연구원 구조연구본부 ) ;
  • 이민주 (한국과학기술원 건설및환경공학과) ;
  • 김성욱 (한국건설기술연구원 구조연구본부) ;
  • 신현섭 (한국건설기술연구원 구조연구본부 ) ;
  • 문재흠 (한국건설기술연구원 구조연구본부)
  • Received : 2022.10.31
  • Accepted : 2022.12.14
  • Published : 2022.12.30
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Abstract

The present study introduces a calibration method of the CSC model implemented in the LS-DYNA program for considering the material properties of ultra-high performance concrete(UHPC). Based on previous experimental studies, various parameters, which constitute three shear failure surfaces, pressure-volumetric strain curve, fracture energy, dynamic increase factor(DIF), and so on, are modified. Then, the proposed calibration method is verified by comparing the numerical result with the experimental data through the single element analysis. In addition, based on the established finite element models, the applicability of the calibrated CSC model is examined for UHPC structures subjected to impact and blast loadings.

본 연구에서는 초고성능 강섬유 보강 콘크리트(UHPC)의 재료특성을 고려하기 위해 해석프로그램 LS-DYNA에 있는 CSC모델의 입력상수값 보정기법을 제안하였다. 1축 압축, 3축 압축, 압력-체적 변형률 곡선, 동적증가계수 등 이전 재료단위 실험 연구결과를 기반으로 입력상수값 보정을 수행하였다. 단일요소 해석결과를 실험결과와 비교하여 보정기법의 검증을 수행하였다. 또한, 유한요소모델을 구축하고 충격 및 폭발해석을 수행하여 UHPC 구조물 해석 수행 시 보정된 CSC 모델의 적용 가능성을 확인해보았다.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부 한국건설기술연구원 연구운영비지원(주요사업)사업으로 수행되었습니다(과제번호 20220232-001, 수소도시 기반시설의 안전 및 수용성 확보기술 개발).

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