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| Dynamic Analysis for Anti - progressive Collapse ofLarge Span Steel Structure in Station Building |
| TIAN Cheng -hao, DONG Cheng，LIU Ming |
| (The Third Railway Survey and Design Institute Group Corporation，Tianjin 300251，China) |
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Abstract Abstract ： Resarch purposes ： The new large railway passenger station is a large building complex，which has great political influence. In case of any unexpected loads and the overall structure W progressive collapse induced by local failure，it causes a large number of casualties and huge property losses. This paper used the finite element program LS - DYNA，carried out the nonlinear dynamic analysis for the central station structure system of Tianjin West comprehensive transportation junction，and explored the weak link of structure to prevent the progressive collapse，to provide guidance and reference for maintenance during operation and the design of similar structures. Research conclusions ：( 1) This station structure is locally damaged and the larger displacement appears for single - column failure cases， but the damage is confined within the limited area around the removed member. (2 ) For the daub - columns failure cases，the damaged area is obviously increased， but the damage is still confined in a limited area and wont induce the whole structure progressive collapse. ( 3 ) The structure has strong ability to resist progressive collapse. (4) The instantaneous component - removing method is simple and useful，and can be used in the analysis of progressive collapse of large span steel structure in station.
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Received: 23 November 2015
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2016, Vol. 33 
