Analysis and Experimental Study of Transverse Internal Force in Composite Box-girder with Corrugated Steel Webs

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China Journal of Highway and Transport ›› 2015, Vol. 28 ›› Issue (11) : 73-81.

YUAN Zhuo-ya^1,2, LI Li-feng³, LIU Qing^3,4, HOU Jia-qing³

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In order to analyze the transverse internal force and the effective distribution width of the top plate in PC composite box-girder bridge with corrugated steel webs under the effect of load, the box girder was divided into two parts, the box frame structure and the flange plate, analyses of which were made respectively by adopting the elastic thin plate theory. The former was straightened as continuous thin plate with four spans, the latter was simplified as a thin plate with one side simply supported and three other sides fixedly supported. By taking the loading properties of the box girder with corrugated steel webs into account, internal force calculation formulas of the two parts were derived, transverse internal force results were obtained and the final transverse internal result of top plate in box girder was obtained by utilizing the superposition principle. Model tests under three different loading conditions were conducted to verify the proposed method, and transverse prestress of top plate was obtained. The numerical analysis was also made on box girder's loading process by using spatial finite element analysis, and the effective distribution width of composite box girder was compared by adopting the relevant regulations specified in the Chinese current bridge design specification. The results show that the experiment results, theoretical results and the numerical analysis results of transverse force in top plate of box girder agree very well, which indicates the proposed theoretical method in this paper is of better precision. Effective distribution width analysis results indicate the calculation result is relatively safe.

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bridge engineering / composite box-girder with corrugated steel webs / elastic thin plate theory / transverse internal force / effective distribution width / model experiment

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YUAN Zhuo-ya, LI Li-feng, LIU Qing, HOU Jia-qing. Analysis and Experimental Study of Transverse Internal Force in Composite Box-girder with Corrugated Steel Webs[J]. China Journal of Highway and Transport, 2015, 28(11): 73-81

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2014-12-15	2015-11-20
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2015-12-03

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