The Finite Element Model Analytical For R.C. Shear Wall In Filled With Steel Plate By The Bonding-slip Influence

Steel and concrete composite structure is a new type of structural system whichhave the merit of steel structure and concrete structure. Bonding-slip performance ofsteel and concrete has a crucial influence on composition structural bearing and seismiccapacity. But the bonding-slip problems of R.C. composite shear wall infilled with steelplate has been a little research at home and abroad up to now.In this thesis a suitable finite element analytical model for R.C. composition shearwall infilled with steel plate are founded by using ABAQUS software, so the binding-slip influence on composite wall’s mechanical properties and seismic performance canbe evaluation. This bonding-slip constitutive model main consideration the cross sectionbetween concrete and steel plate two kinds material of different bonding performance.The main work are as follows:(1) The concrete use plastic damage model to simulate the concrete C3D8R unit.Reinforced with T3D2truss element and was embedded in concrete, with double brokenline to define the constitutive relation.(2) Steel plate and channel steel chooses C3D8R entity unit, choose double linearplastic model, the constitutive model is consideration to becoming stronger after thesteel yield stress point.(3) Inserted Spring2element to simulate the bond-slip between steel plate andconcrete, bond-slip constitutive relation using the shape steel and concrete parametervalue by the relation design code.(4)With and without the bond-slip load-displacement curve of R.C. compositionshear wall infilled with steel plate under the monotonic load are calculated based onnine different parameters by ABAQUS programme.(5) The skeleton curve of seismic performance experiment and the numericalsimulation for R.C. composition shear wall infilled with steel plate are compared, the load-displacement curve of simulation better similar the testing value. So the themechanical model are right and can provide reference for analytical.(6) By comparing with bond-slip and without bond-slip of load-displacement curve,we find that the influence of the bond-slip on the bearing capacity of R.C. compositionshear wall infilled with steel plate cannot be ignored.(7)The grade of concrete, concrete cover thickness, height to width ratio of walland axial compression ratio on bond-slip properties of R.C. composition shear wallinfilled with steel plate are compared and analyzed by the model simulation.(8)The shear bearing capacity formula of R.C. composition shear wall infilled withsteel plate is revised according to the simulation when considering bond-slip effective.This formula have better than the original because the bond-slip factor can beperfomance by the paramater β in the shear bearing capacity of composite wall.(9) Suggestions on the normal section flexural bearing capacity formula of theshear bearing capacity formula of R.C. composition shear wall is given.