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2025 Vol.38, Issue 1 Preview Page

Research Paper

Estimation of Slab Construction Loads according to Changes in Average Curing Temperature in Multistory-shored RC Structure including Non-typical Stories with Different Slab Thickness

슬래브 두께가 다른 비기준층을 포함한 다층지지 RC 구조에서 평균 양생 온도 변화에 따른 슬래브 시공 하중 산정

Sang-Min Han1
,
Jae-Yo Kim2*
한 상민1
,
김 재요2*
1Graduate Student, Dept. of Architectural Engineering, Kwangwoon University, Seoul, 01890, Korea
2Professor, Dept. of Architectural Engineering, Kwangwoon University, Seoul, 01890, Korea
1광운대학교 건축공학과 석사과정
2광운대학교 건축공학과 교수
*Corresponding Author
28 February 2025. pp. 35-42
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Abstract

Recently, accidents involving structural elements, formwork, and shoring during concrete pouring have been occurring with increasing frequency, particularly in multistory-shored RC structural systems with non-typical floors featuring increased slab thickness. Curing temperature is a major factor that determines the strength and stiffness of concrete, thereby affecting the distribution of construction loads. In this study, to analyze the distribution of construction loads as influenced by curing temperature, the equivalent age was calculated using the theory of maturity based on temperature and age. The strength and stiffness of slab concrete were subsequently estimated, and the variations in construction loads and damage parameters during construction were analyzed. The results indicated that construction loads decreased slightly at an early age when the average curing temperature was lower, but increased after sufficient curing time had elapsed. The construction damage parameters exhibited significant increases when the average curing temperature was lower.

Keywords
RC structure
slab construction load
different slab thickness
curing temperature
maturity

최근 콘크리트 타설 중 구조체, 거푸집 및 동바리 사고가 지속적으로 발생하고 있으며, 특히 슬래브 두께가 증가한 비기준층이 존재하는 다층지지 RC 구조 시스템에서 빈번하게 발생하였다. 양생 온도는 콘크리트의 강도와 강성을 결정하는 주요한 요인이며 이에 따라 시공 하중의 분포가 변화한다. 이 연구에서는 양생 온도에 따른 시공 하중의 분포를 분석하기 위하여 온도와 재령에 따른 적산 온도 이론을 사용하여 등가 재령을 계산하고, 이에 따른 슬래브 콘크리트의 강도 및 강성을 산정하여 시공 하중, 시공 손상 변수의 변화에 대하여 분석하였다. 시공 하중은 평균 양생 온도가 낮아질 때 초기 재령에서는 소폭 감소하고, 충분한 재령이 지난 후에는 증가하였다. 시공 손상 변수는 평균 양생 온도가 낮아질 때 크게 증가함을 확인하였다.

키워드
RC 구조
슬래브 시공하중
슬래브 두께 변화
양생 온도
적산 온도
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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 : 38
  • No :1
  • Pages :35-42
  • Received Date : 2024-10-10
  • Revised Date : 2024-10-30
  • Accepted Date : 2024-10-30
  • DOI :https://doi.org/10.7734/COSEIK.2025.38.1.35
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