Thermal Crack Control of Wall Elements in LiNAC Structure

LiNAC실 벽체 구조물의 온도 균열 제어

  • 손명식 (삼성물산(주) 건설부문 삼성암센터) ;
  • 도율호 (삼성물산(주) 건설부문 삼성암센터) ;
  • 나운 (삼성물산(주) 건설부문 기술본부 건축구조팀) ;
  • 박찬규 (삼성물산(주) 건설부문 기술연구소) ;
  • 이회근 (삼성물산(주) 건설부문 기술연구소)
  • Published : 2006.11.04

Abstract

This paper presents the analytical results on the heat of hydration and induced thermal cracking of the wall elements in LiNAC that is a radioactive shield concrete structure. This wall elements measuring 1.2 m in thickness and 32 m in length tend to exhibit thermal cracking due to heat of hydration and high constraint effects caused by slab element located in the lower part of structure. In this analysis, four different construction stages were considered to find out the most effective concrete casting method in terms of thermal stress. Among the construction methods adopted in this analysis, the method of installation of construction connection measuring 1.2 m at the both side of wall elements was very effective way to control the thermal stress, resulting in increase thermal cracking index of wall elements in LiNAC structure. Finally, the wall elements in LiNAC structure was cast successfully according to the proposed construction method.

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