Field experimental study and FE analysis on internal force and deformation law of RC frame structure during construction
There are complex nonlinear stress and deformation processes in concrete structures during construction.In this paper,field tests are carried out during construction to study the nonlinear processes affected by intemal constraints of reinforcement and external constraints of members.First,the development process of stress and strain of reinforced concrete structures during construction is measured based on tests.Second,the nonlinear numerical model based on ABAQUS is verified and analyzed.Finally,the law of internal force and deformation of concrete structure during construction is studied through parameter analysis.The results show that the temperature development trend of beam section during construction is similar.Due to different constraint levels,the strain of side span beam section is greater than that of mid span beam section.During the construction period,the displacement distribution of the frame column is close to the linear distribution shape,but its shear force presents an obvious nonlinear distribution law with the increase of the number of spans.
construction periodRC structuredeformation lawfield test
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