Experimental Study on the Temperature Distribution and Residual Strength of Fire-damaged RC Columns Depending on Heated Areas
- 주제(키워드) RC Column , Fire , Temperature , Residual Strength , Heated Area , RC 기둥 , 화재 , 온도 , 잔존강도 , 가열면
- 주제(기타) 기타공학
- 설명문(URI) https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002599443
- 등재 KCI등재
- 발행기관 한국방재학회
- 발행년도 2020
- URI http://www.dcollection.net/handler/ewha/000000176084
- 본문언어 영어
- Published As http://dx.doi.org/10.9798/KOSHAM.2020.20.3.75
초록/요약
Most of the columns in actual fire conditions are heated on partial faces rather than all four sides due to the floor plan, which results in asymmetric behaviors of columns. The asymmetric behaviors of fire-damaged columns may cause more vulnerability to the structural performance. In this study, temperature distribution and residual strength of reinforced concrete columns exposed to fire were investigated according to various heated areas. To achieve the objective, columns were heated for 2 h according to ISO-834 standard time-temperature curve and subsequently tested under the axial loading after a week. The test results show that the residual strength of the fire-damaged columns decreased as the heated area increased, and the residual strength reduced additionally due to asymmetric heating.
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