Analytical Models for the Prediction of the Flexural Behavior for Thermal Bridge Breaker Systems embedded in ReinforcedConcrete Slabs

Shin Dong-Hyeon; Kim Hyung-Joon

doi:10.7734/COSEIK.2015.28.3.325

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2015 Vol.28, Issue 3 Preview Page

Analytical Models for the Prediction of the Flexural Behavior for Thermal Bridge Breaker Systems embedded in ReinforcedConcrete Slabs 열교차단장치가 적용된 철근 콘크리트 슬래브의휨거동 예측을 위한 해석모델

2015. pp. 325-385

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Abstract

최근들어 철근콘크리트 슬래브와 벽의 연결부에 적용 가능한 열교차단장치에 대한 연구가 다수 수행되고 있다. 이에 본 연구에서는 열교차단장치가 적용된 슬래브의 균열 전 탄성거동, 균열 후 항복거동 및 극한강도까지 적용이 가능한 해석모델을 제안하고, 실험결과와의 비교를 통하여 제안 모델의 정확도를 검증하고자 하였다. 해석모델은 변형률 적합조건과 힘의 평형개념을 적용하였으며, 이 때 구성 재료의 응력-변형률 관계는 재료실험 결과를 적용하였다. 해석모델의 신뢰성 검증을 위해 모멘트-곡률 관계, 하중단계에 따른 중립축을 실험결과와 비교하였으며, 제안된 해석모델은 실험결과로 획득한 전체적인 휨거동 양상과 거의 일치함을 확인할 수 있었다.

Recently, thermal bridge breaker systems(TBBSs) applicable to RC slab-wall connections have been increasingly studied and proposed. This study also aims at proposing an analytic model which is applicable to predicting the flexural behavior of TBBS embedded in slabs from the initial elastic stages, yield states to ultimate conditions. The analytic models are developed by considering strain compatibility, force equilibrium and the constitutive law obtained from material test results. To verify the accuracy of the proposed analytic model, the moment-curvature relationship and change of neutral axis according to the loading states are compared with those of experimental results. Based on the comparison, it is verified that the proposed analytic model provides well predict the flexural behavior of TBBS embedded in slabs.

키워드

열교차단장치, 휨거동, 철근콘크리트 슬래브, 구성방정식

thermal bridge breaker system (TBBS), flexural behavior, RC slab, constitutive law

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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 : 28
No :3
Pages :325-385
Received Date : 2015-04-20
Revised Date : 2015-05-06
Accepted Date : 2015-05-07
DOI :https://doi.org/10.7734/COSEIK.2015.28.3.325

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

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