Shear lag effect analysis for multi-cell fish-bellied box beam
ZHANG Hai
JIN Yu-jia
Abstract：In order to solve the problem that the distribution states of stress and shear lag effect of multi-cell fish-bellied box beam are different with those of traditional box beam, the simulation analysis was carried out with finite element software, and the real stress states under the self-weight load effect of fish-bellied box beam were investigated. In addition, the reasons for the un-normal distribution of shear lag coefficient of fish-bellied box beam were analyzed, which could provide the experience and references for the design and construction of the box beams. The results show that under the self-weight load effect, the shear lag effect of fish-bellied box beam is obvious, and the main reasons for the un-normal distribute of shear lag coefficient of fish-bellied box beam are the different deformation balance conditions of webs, different shear distribution and unequal change rate of neutral axis of various webs.
Keywords：fish-bellied box beamfinite elementshear lag coefficientflange stressweb stressweb deflectionshear distributionneutral axis
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 710-715 )