Numerical and theoretical research on spatial shear lag effect of self-anchored suspension bridge steel box girder

• Autorzy: Li Yanfeng , He Ying , Bao Longsheng , Sun Baoyun , Wang Qinghe

Identyfikatory

DOI

10.24425/ace.2021.137189

• Języki publikacji: EN

Abstrakty

EN

The shear lag effect of the steel box girder section in a self-anchored suspension bridge was investigated in this study. Finite element analysis software Midas Civil was used to discretize the girder under analysis into space plate elements and establish a plate element model. The law of shear lag in the longitudinal direction of the girder in the construction and completion stages was determined accordingly. The shear lag coefficient appears to change suddenly near the side support, middle support, side cable anchorage area, and near the bridge tower support of the steel box girder under the imposed load. The most severe shear lag effect is located near the side support and near the side cable anchorage area. Steel box girder sections are simulated before and after system conversion to analyze the shear lag coefficient in the bridge construction stage. The results show that the shear lag coefficient markedly differs before versus after system conversion due to the different stress mechanisms. The finite element analysis results were validated by comparison with the results of an analysis via analogous rod method.

Słowa kluczowe

EN

self-anchored bridge; suspension bridge; steel box girder; shear lag effect; finite element analysis; FEM

PL

most samozakotwiony; most wiszący; dźwigar skrzynkowy; dźwigar stalowy; efekt opóźnienia ścinania; analiza elementów skończonych; MES

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2021
• Tom: Vol. 67, nr 2
• Strony: 631--651
• Opis fizyczny: Bibliogr. 23 poz., il., tab.

Twórcy

autor

Li Yanfeng

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0003-2153-7934

autor

He Ying

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0003-0489-9044

autor

Bao Longsheng

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0001-5582-1103

autor

Sun Baoyun

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0003-3260-3386

autor

Wang Qinghe

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0002-1530-4555

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