Techno Press


Steel and Composite Structures   Volume 23, Number 4, March20 2017, pages 435-444
DOI: http://dx.doi.org/10.12989/scs.2017.23.4.435
 
Dynamic analysis method for the progressive collapse of long-span spatial grid structures
Li-min Tian, Jian-peng Wei, Ji-ping Hao and Xian-tie Wang

 
Abstract     [Full Text]
    In the past, the progressive collapse resulting from local failures during accidents has caused many tragedies and loss of life. Although long-span spatial grid structures are characterised by a high degree of static indeterminacy, the sudden failure of key members may lead to a catastrophic progressive collapse. For this reason, it is especially necessary to research the progressive collapse resistance capacity of long-span spatial grid structures. This paper presents an evaluation method of important members and a novel dynamic analysis method for simulating the progressive collapse of long-span spatial grid structures. Engineering cases were analysed to validate these proposed method. These proposed methods were eventually implemented in the progressive collapse analysis of the main stadium for the Universiade Sports Center. The roof of the structure was concluded to have good resistance against progressive collapse. The novel methods provide results close to practice and are especially suitable for the progressive collapse analysis of long-span spatial grid structures.
 
Key Words
    long-span spatial grid structures; progressive collapse; multiple responses; analysis method; construction effect
 
Address
School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, P.R. China.
 

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