Research On Nonlinear Finite Element Analysis Of Embedded Steel Plate Reinforcement Concrete Shear Walls With Studs

The composite steel plate shear walls are widely applied, in particular thereinforcement layer in the bottom of the structural design of tall buildings. Compositesteel plate shear walls combine the advantages of the reinforced concrete shear wall andsteel shear wall together, which has a high load-carrying capacity, good ductility, canincrease the use space and promote its seismic capacity in the building structure. Atpresent, many researches on design theory of composite steel plate shear walls havebeen done, but researches on that how to work better together between steel andconcrete is hardly found. The studs, as shear connectors in steel and concrete compositemembers commonly, can improve coordination between steel and concrete and give fullplay to the role of both. Therefore, considering the impact of studs on the compositeshear wall, the embedded steel plate concrete shear walls with arrayed studs are studiedin order to find out variation of stress state and the variation of shear capacity.Based on the experiment of4embedded steel plate reinforcement concrete shearwalls with arrayed studs, some models were designed to simulate the process of theloading and concrete walls mechanics behavior by ABAQUS. The nonlinear behavior ofmaterials, load-slip behavior and fracture model of studs are taken into account in theanalysis. Based on the proposed model, the combination of the following parameterswere varied so as to compare their influence on structural response of the walls: thethickness of the concrete wall, the thickness of steel plate, studs diameter, ratio of thelength to the diameter of studs, studs spacing, axial load ratio and the aspect ratio. Theresults of the analysis about different parameters mainly show that the greater the wallsand plate thickness are, the better the shear strength and stiffness. So the steel surface is welded by studs, the deformation capacity of composite steel plate shear walls can beimproved largely. When concrete wall and steel plate thickness meet the basic demandof details, shear bearing capacity is obviously improved by using bigger diameter studs.However, shear bearing capacity increases slowly with the increase of the diameter stud.Shear bearing capacity and ductility of shear wall become stronger by decreasing thespan of studs and increasing ratio of the length to the diameter of studs. With axialcompression ratio increasing, shear bearing capacity of shear wall increases, butductility reduces. With aspect ratio increasing, shear bearing capacity of shear wallreduces, but the deformation capacity increases.Without considering the impact of bond-slip between steel and concrete, themechanical behavior of embedded steel plate reinforcement concrete shear walls withdifferent boundary restraints and steel ratios is analyzed. The results show that with theincreasing of the boundary restraint effect, the load resistant capacity of the shear wall isincreased, and the deformation capacity is improved at the same time. With steel ratiosof boundary restraints increasing, the deformation capacity and ultimate bearingcapacity of composite steel plate shear walls are improved.Based on the analysis and calculation, Considering the studs, the formula forcalculating maximum shear capacity of embedded steel plate reinforcement concreteshear wall with arrayed studs is suggested according to the simulation results statistics,this formula provide a reference for engineering design.