Dynamic Analysis of RC Piloti-Type Building Subjected to Earthquake Loads

Ju-Won Kim

doi:10.7734/COSEIK.2021.34.3.121

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2021 Vol.34, Issue 3 Next Page

Research Paper

Dynamic Analysis of RC Piloti-Type Building Subjected to Earthquake Loads 지진하중이 작용하는 RC 필로티 건축물의 동적해석

30 June 2021. pp. 121-128

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Abstract

Piloti-type buildings in Korea are usually composed of lower frames and upper shear wall structures. Piloti-type buildings have been seriously damaged during earthquakes because of the construction of soft and weak stories. Piloti-type buildings with edge cores are two-way unsymmetric planes. This paper analyzed and obtained the dynamic response for structures modeled using a multistory two-way asymmetric system. The numerical results, obtained using the Newmark-β method, show the time-history responses and trends of maximum displacements and shear forces. The purpose of this study is to evaluate the effect of reinforcement on dynamic response when a shear wall or brace is reinforced in the corner opposite the piloti.

Keywords

pohang earthquake

piloti-type

dynamic analysis

vertical and torsional irregularities

본 연구에서는 비틀림비정형성과 수직비정형성을 가진 RC 필로티 건축물의 지진동에 대한 거동을 층강성을 적용하여 간단하게 모델링하는 선형 동적해석 프로그램을 개발하고자 한다. 개발된 동적 해석 프로그램을 적용하여 필로티 건축물의 동적 거동 및 필로티층 각 기둥의 전단력을 분석하고, 필로티층에 전단벽 또는 가새를 보강하였을 때 보강효과를 평가하고자 한다. 모서리코어가 있는 필로티 건축물에서 필로티층의 코어 반대편 모서리를 전단벽이나 K형 가새로 보강하였을 때 변위와 기둥 전단력이 크게 감소하는 것으로 나타났으며, 모서리 양면을 K형 가새로 보강하는 것보다 한 면을 전단벽으로 보강하는 것이 보강효과가 큰 것으로 나타났다.

키워드

포항지진

필로티 건축물

동적 해석

비틀림비정형성

수직비정형성

References

Chopra, A.K. (2001) Dynamics of Structures, Prentice Hall, New Jersey, p.844.

Kim, J.C., Shin, S.H., Oh, S.H. (2019) Damage Investigation of Pilotis Structures and Analysis of Damage Causes by Pohang Earthquake, Archit. Inst. Korea, 35(3), pp.3~10.

Moon, E.C., Baek, E.R., Lee, S.H. (2019) Study on the Seismic Performance for Low-rised RC Building with Vertical and Torsional Irregularities, J. Archit. Inst. Korea Struct. & Constr., 35(12), pp.137~148.

Naeim, F. (2001) The Seismic Design Handbook, Springer, New York, p.830. 10.1007/978-1-4615-1693-411780701

Paz, M. (1985) Structural Dynamics. Van Nostrand Reinhold, New York, p.626.

The Architectural Institute of Korea (2016) Korean Building Code and Commentary.

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 : 34
No :3
Pages :121-128
Received Date : 2021-04-12
Revised Date : 2021-04-20
Accepted Date : 2021-04-21
DOI :https://doi.org/10.7734/COSEIK.2021.34.3.121

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

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