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2024 Vol.37, Issue 4 Preview Page

Research Paper

Parametric Study on Slab Construction Loads in Multistory-shored RC Structures Including Non-typical Stories with Different Slab Thicknesses

슬래브 두께가 다른 비기준층을 포함한 다층지지 RC 구조에서의 슬래브 시공 하중에 대한 변수 연구

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
31 August 2024. pp. 243-250
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Abstract

Recently, accidents involving structural elements, formwork, and shore have occurred continuously during concrete pouring, especially in multistory-shored RC structure systems with non-typical stories with increased slab thicknesses. In previous studies, an analysis was conducted on the stiffness of concrete and distribution of slab construction loads when some slab thicknesses were increased under the same conditions. This study analyzed the construction load, construction damage parameter, and shoring force by varying the construction conditions, such as the construction period and number of shores, as well as the design conditions, such as the thickness increment and number of thickness increment slabs, in a multistory-shored RC structure system with non-typical stories with increased slab thickness.

Keywords
RC structure
different slab thickness
slab construction load
construction damage parameter
shore force

최근 콘크리트 타설 중 구조체, 거푸집 및 동바리 사고가 지속적으로 발생하고 있으며, 특히 슬래브 두께가 증가한 비기준층이 존재하는 다층지지 RC 구조 시스템에서 빈번하게 발생하였다. 선행 연구에서는 동일한 조건에서 일부 슬래브 두께가 증가하는 경우 콘크리트의 강성과 슬래브 시공 하중의 분포에 대한 분석을 실시하였다. 이 논문에서는 슬래브 두께가 변화하여 비기준층이 존재하는 다층지지 RC 구조 시스템에서 시공 주기, 동바리 지지 층수의 시공 조건과 두께 증가량, 두께 증가 층수의 설계 조건을 변화시켜 시공 하중, 시공 손상 변수, 동바리 축력을 분석하였다. 시공 하중과 시공 손상 변수는 두께 증가량과 두께 증가층 수의 영향이 가장 크고, 동바리 축력은 동바리 지지 층수와 두께 증가층 수가 가장 큰 영향을 미침을 확인하였다.

키워드
RC 구조
슬래브 두께 변화
시공 하중
시공 손상 변수
동바리 축력
References
1

ACI Committee 347 (2005) Guide for Shoring/Reshoring of Concrete Multi-story Buildings (ACI 347.2R-05), American Concrete Institute, 3-7.

2

Alvarado, Y.A., Calderon, P.A., Gasch, I., Adam, J.M. (2010) A Numerical Study into the Evolution of Loads on Shores and Slabs during Construction of Multistory Buildings. Comparison of Partial Striking with Other Techniques, Eng. Struct., 32, pp.3093~3102.

10.1016/j.engstruct.2010.05.028
3

Azkune, M., Puente, I., Santilli, A. (2010) Shore Overloads during Shoring Removal, Eng. Struct., 32, pp.3629~3638.

10.1016/j.engstruct.2010.08.007
4

Choi, S.M., Eom, T.S., Kim, J.Y. (2012) Parametric Study on Long-Term Deflections of Flat Plates Considering Effects of Construction Loads and Cracking, J. Korea Inst. Struct. Maint. & Insp., 16(1), pp.44~54.

10.11112/jksmi.2012.16.1.044
5

Grundy, P., Kabaila, A. (1963) Construction Loads on Slab with Shored Formwork in Multistory Buildings, ACI J., 60(12), pp.1729~1738.

10.14359/7911
6

Han, S.M., Kim, J.Y. (2024) Slab Construction Load Distribution in a Multistory-shored RC Structure System with Different Slab Thickness, J. Korea Inst. Struct. Maint. & Insp., 28(2), pp.17~26.

7

Hwnag, H.J., Hong, G.H., Park, H.G., Kim, Y.N., Kim, J.Y. (2010) Effects of Shore Stiffness and Concrete Cracking on Slab Construction Load I: Theory, J. Korea Concr. Inst., KCI, 22(1), pp.41~50.

10.4334/JKCI.2010.22.1.041
8

Kang, S.M., Oh, J.K., Kim, O.J., Lee, D.B. (2009) Analysis on Load and Behavior of R/C Wall Type Apartment under Construction through Field Instrumentation, J. Archit. Inst. Korea, 25(2), pp.37~48.

9

Kim, J.Y. (2009) Applications of Practical Analysis Scheme for Evaluating Effects of Over-Loads during Construction on De-flections of Flat Plate System, J. Comput. Struct. Eng. Inst. Korea, 22(1), pp.25~34.

10

Puente, I., Azkune, M., Insausti, A. (2007) Shore-Slab Interaction in Multistory Reinforced Concrete Buildings during Construction : An Experimental Approach, Eng. Struct., 29, pp.731~741.

10.1016/j.engstruct.2006.06.018
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 : 37
  • No :4
  • Pages :243-250
  • Received Date : 2024-06-05
  • Revised Date : 2024-07-03
  • Accepted Date : 2024-07-10
  • DOI :https://doi.org/10.7734/COSEIK.2024.37.4.243
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