Resistance to progressive collapse performance analysis of steel open-web sandwich plate structure

• Autorzy: Zeng W. Y. , Luo J. , Xiao J. C.

Identyfikatory

DOI

10.24425/ace.2020.134398

• Języki publikacji: EN

Abstrakty

EN

In order to investigate the progressive collapse performance of steel open-web sandwich plate structure, the sensitivity index and the importance coefficient of the bars are analyzed by the alternate path method. The condition that the model has perimeter supports with different parameters shows the result that: the redundancy index of structure increases at the structural edge, and the redundancy index will be reduced to changing degrees at the middle structure, when the stiffness of higher ribs increases. The redundancy index has little change, when the stiffness of lower ribs or shear keys increases. The sensitivity index of the shear keys dropped significantly, but the sensitivity index of the higher ribs and lower ribs increase, when the span to depth ratio increases. The sensitivity index of the higher ribs in L1 line increases significantly, when the span to depth ratio declines. So it is advisable to strengthen the higher ribs to avoid excessive sensitivity of ribs, when the span to depth ratio declines.

Słowa kluczowe

EN

sensitivity analysis; rod; failure; sandwich plate; steel structure; open-web core; progressive collapse; redundancy index

PL

analiza wrażliwości; awaria; pręt; płyta warstwowa; konstrukcja stalowa; przekrój otwarty; katastrofa postępująca; wskaźnik nadmiarowości

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2020
• Tom: Vol. 66, nr 3
• Strony: 281--303
• Opis fizyczny: Bibliogr. 15 poz., il., tab.

Twórcy

autor

Zeng W. Y.

• Guizhou University, Spatial Structure Research Center, Guiyang, China

autor

Luo J.

• China Construction 4th Engineering Bureau 6th Co., Ltd, Hefei, China

autor

Xiao J. C.

• Guizhou University, Spatial Structure Research Center, Guiyang, China

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