City Research Online

Abstract

A reticulated shell is one of the conventional long span space structures, prone to progressive collapse under a severe earthquake due to its unique single layer feature. This is. However, the collapse mechanism of this type of structure is not well studied. In this paper, a numerical modelling technique using the fiber beam elements is developed. The correspondent material model based on the inclusion of damage accumulation was also developed in order to determine the failure criteria of structural members. An effective way to simulate the buckling behavior of the structural members is also used in the numerical simulation. The relevant numerical method is developed and validated against experimental tests: good agreement is achieved. Based on this numerical method, a parametric study of the reticulated shell under severe earthquake loading is performed and the responses of the structure is investigatedand a three-stages collapse mechanism of this type of structure was observed.

Publication Type:	Article
Additional Information:	Copyright ASCE 2017. This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://doi.org/10.1061/(ASCE)CF.1943-5509.0001129.
Publisher Keywords:	single-layer reticulated shell; progressive collapse; severe earthquake, cumulative damage; hysteresis curve; stiffness degradation
Departments:	School of Science & Technology > Engineering
SWORD Depositor:	Symplectic Administrator

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