Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Identifying Faults in Differently Tapered Structures

이종 테이퍼 형식 구조물의 결함추정기법

  • Lee, Jong-Won (Dept. of Architectural Engineering, Namseoul University)
  • 이종원 (남서울대학교 건축공학과)
  • Received : 2023.07.01
  • Accepted : 2023.09.25
  • Published : 2023.10.30
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Abstract

In tall buildings, there is a common use of taper-type structures, where structural properties change with height. Cantilever-type structures, which combine different taper types, are also considered. This paper introduces a method for identifying faults in a cantilever beam consisting of two tapered beam sections. To achieve this, a technique was first explored to estimate the modal characteristics of the un-cracked beam by considering boundary and continuity conditions. Then an equivalent bending stiffness was introduced for the cracked beam and an integral characteristic equation was established to estimate its natural frequency. This method was applied, along with neural network techniques, to identify cracks in a sample structure. Through numerical simulations and the generation of neural network training patterns, the sizes and locations of cracks were successfully identified. This suggests that this approach can be valuable for detecting faults in differently tapered cantilever-type structures.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (NRF-2022R1A2C1004708).

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