Identification of Dynamic Characteristics and Numerical Analysis of Ceiling System Considering Collision Adjacent Structures

Min-Jun Jeon; Bo-Geun Ju; Bong-Ho Cho; Sang-Hyun Lee

doi:10.7734/COSEIK.2019.32.4.205

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2019 Vol.32, Issue 4 Next Page

Identification of Dynamic Characteristics and Numerical Analysis of Ceiling System Considering Collision Adjacent Structures 천장시스템의 동특성 식별 및 인접 구조물과의 충돌을 고려한 동적응답해석

2019. pp. 205-213

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Abstract

In the Pohang Earthquake in 2017, considerable damage to non-structural elements, such as ceiling systems, exterior finishes, and curtain walls, was reported; thus, the seismic designs of non-structural elements are important. In this study, the modal characteristics of a ceiling system were investigated through the impact hammer test. The frequency and damping ratio according to the length of the hanger bolt were identified. In addition, collision experiments were conducted to obtain the impact duration for exactly considering the impact effects of the ceiling against a wall or other adjacent elements. Based on the identified dynamics and impact duration of the ceiling system, the seismic responses of the ceiling system were obtained numerically in case of collision. Numerical simulation results show that the impact load tends to increase with the clearance between the ceiling and adjacent elements, and is not correlated with the length of the hanger bolt.

Keywords

ceiling system

non-structural elements

length of hanger bolt

clearance

impact force

2017년 발생한 포항 지진으로 인하여 천장재, 외장재, 커튼월 등 본 연구에서는 임팩트해머 테스트를 통해 행어볼트 길이에 따른 천장재의 고유진동수 와 감쇠비를 식별하였다. 또한 천장재가 벽 또는 다른 구조체에 충돌하는 경우 발생하는 충격효과를 정확히 고려하기 위해 충돌실험을 수행하였다. 식별된 천장재의 동특성과 충격지속시간을 바탕으로 실제로 천장재가 지진하중으로 인하여 주변 구 조물과 충돌이 발생하는 경우에 대한 천장재 응답특성을 수치해석을 통하여 분석하였다. 수치해석 시뮬레이션 결과, 충격하 중은 이격거리에 따라 선형적으로 증가하는 경향을 보였으며, 달대길이와는 무관한 것으로 나타났다.

키워드

천장재

천장시스템

비구조재

달대길이

이격거리

충격하중

충격하중 시간이력 해석

References

Architectural Institute of Korea (2018) Site Inspection and Damage Investigation of Buildings by Earthquakes in Gyeongju and Pohang, Architectural Institute of Korea.

Architectural Institute of Korea (2016) Korean Building Code, Architectural Institute of Korea.

American Society of Civil Engineers (2010) Minimum Design Loads and Associated Criteria for Buildings and Other Structures(ASCE/SEI 7-16), ASCE.

Ministry of Land, Infrastructure, Transport and Tourism, Japan (2013) Public Notice No.771, MLIT.

Korea Institute of Civil Engineering and Building Technology (2019) KDS 41 17 00, Korea Construction Standards Center.

Gilani, A.S.J., Takhirov, S.M., Tedesco, L.M. (2013) Seismic Evaluation of Suspended Ceiling Systems using Static and Dynamic Procedures, Struct. Congr. 2013: Bridging Your Passion with Your Profession, pp.1523~1532. 10.1061/9780784412848.134

10.1061/9780784412848.134

Sato, Y., Motoyui, S., MacRae, G.A., Dhakal, R.P. (2011) Ceiling Fragility of Japanese Ceiling Systems, Pro. Ninth Pacific Conf. Earthq. Eng.

Mun, D.H., Hwang, J.S., Lee, S.H. (2018) Comparison of Modal Parameters According to the Magnitude of Wind-induced Dynamic Response of the 5-story Structure, Proc. WEIK Symp., 21, pp.53~55

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 : 32
No :4
Pages :205-213
Received Date : 2019-03-12
Revised Date : 2019-05-02
Accepted Date : 2019-08-09
DOI :https://doi.org/10.7734/COSEIK.2019.32.4.205

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

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