Paper Title:

Pure Bending behavior of Lightweight Aggregate Concrete Filled Circular Steel Tubes

Periodical Advanced Materials Research (Volumes 374 - 377)
Main Theme Sustainable Development of Urban Environment and Building Material
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 Fa Xing Ding et al., 2011, Advanced Materials Research, 374-377, 2239
Online since October, 2011
Authors Fa Xing Ding, Ya Ting Luo, Xiao Yong Ying, Zhao Hui Lu
Keywords Flexural Stiffness, Lightweight Aggregate Concrete Filled Steel Tubes, Moment-Curvature Relationship, Ultimate Moment
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Abstract

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.