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논문 기본 정보

자료유형
학술저널
저자정보
Zhu, Jue (Faculty of Mechanical Engineering and Mechanics, Ningbo University) Chen, Jian-Kang (Faculty of Mechanical Engineering and Mechanics, Ningbo University) Ren, Chong (School of Civil Engineering, University of Birmingham)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제49권 제2호
발행연도
2014.1
수록면
147 - 161 (15page)

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In this paper a nonlinear finite element analysis model is established for cold-formed steel zed-section purlins subjected to uplift loading. In the model, the lateral and rotational restraints provided by the sheeting to the purlin are simplified as a lateral rigid restraint imposed at the upper flange-web junction and a rotational spring restraint applied at the mid of the upper flange where the sheeting is fixed. The analyses are performed by considering both geometrical and material nonlinearities. The influences of the rotational spring stiffness and initial geometrical imperfections on the uplift loading capacity of the purlin are investigated numerically. It is found that the rotational spring stiffness has significant influence on the purlin performance. However, the influence of the initial geometric imperfections on the purlin performance is found only in purlins of medium or long length with no or low rotational spring stiffness.

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