Pure Bending behavior of Lightweight Aggregate Concrete Filled Circular Steel Tubes

Abstract:

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Based on appropriate numerical constitutive model of lightweight aggregate concrete filled steel tubes (LCFST), layered method was adopted to predict the complete moment-curvature curves of LCFST composite section subjected to pure bending. A FORTRAN program for the moment-curvature curves was developed. Applying the layered method, the influences of the significant parameters, such as steel ratio, yield strength of steel and strength of lightweight aggregate concrete on the moment-curvature curves of the composite section subjected to pure bending were discussed. The practical composite flexural stiffness, ultimate moment and practical moment- curvature relationship of LCFST composite section were presented. The predicted results of both layered method and practical moment-curvature relationships of LCFST composite section are in good agreement with the test results from reference. Compared with the layered method, practical calculate method could remove the step of composite section layered and improve the calculation speed while achieving similar results.

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Edited by:

Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du

Pages:

2239-2244

DOI:

10.4028/www.scientific.net/AMR.374-377.2239

Citation:

F. X. Ding et al., "Pure Bending behavior of Lightweight Aggregate Concrete Filled Circular Steel Tubes", Advanced Materials Research, Vols. 374-377, pp. 2239-2244, 2012

Online since:

October 2011

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Price:

$35.00

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