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중층 규모 철근콘크리트 주거형 건물의 시공 중 구조성능 분석

Analyses of Structural Performances for Reinforced Concrete Middle-Rise Residential Building under Construction

  • 고준영 (광운대학교 건축공학과) ;
  • 김재요 (광운대학교 건축공학과)
  • 투고 : 2019.08.01
  • 심사 : 2019.08.28
  • 발행 : 2019.09.01

초록

중층 철근콘크리트 주거형 건물은 국내에서 많은 비중을 차하며, 이러한 건물의 시공단계에서 발생 될 수 있는 문제에 대한 구조성능 분석이 필요하다. 이를 위하여, 25층 규모의 중층 철근콘크리트 주거형 건물을 예제모델로 선정해 구조성능 분석을 진행하였다. 예제모델을 5층, 10층, 15층, 20층, 25층의 시공단계 모델과 설계가 완료된 완공단계 모델로 구분해 구조해석을 수행하였다. 완공단계와 시공단계 모델들에 대하여, 고유치해석, 횡력저항성능, 완공단계에서의 설계강도비와 시공단계에서의 설계강도비를 비교를 통한 단면성능 검토를 수행하였다. 검토 결과, 시공단계와 완공단계 모두 횡변위와 층간변위비에서 건축구조기준 제한을 초과하지 않았는 것을 확인하였고, 단면성능 검토에서는 벽체의 일부 데이터를 제외한 모든 부재에서 구조적 안전성을 확인하였다. 따라서, 중층 철근콘크리트 주거형 건물의 완공단계에서 구조적 안정성이 확보되면 시공단계에서도 구조적 안정성 학보가 이루어진다는 결론을 도출할 수 있었다.

Middle-rise reinforced concrete residential buildings account for a large portion of the Korea, and structural performance analysis are needed for problems that could occur during the construction of such buildings. Thus, a middle-rise reinforced concrete residential building with 25 stories are selected as a sample model for structural performance analysis. The structural analyses are performed by dividing a sample model into the construction stage models of the 5th, 10th, 15th, 20th and 25th floors and the completion stage models with the design completed. For the comparisons of structural performances, Eigenvalue analysis results and lateral-load-resisting capabilities and structural design performances of structural members are analyzed. As a result of analyses, it was confirmed that both the construction and completion stage do not exceed KBC criteria limits at the lateral displacement and story drift ratio, and structural design performances of structural members confirm structural safety in all components except for some members of the wall. Therefore, it was concluded that if structural stability is obtained during the completion stage of a middle-rise reinforced concrete residential building, structural stability is secured under construction.

키워드

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