Research On The Performance Of Perforated Concrete Brick Filled Wall Steel Frames Construction Under Load

The lateral stiffness of steel frame structure is too low, so thaet mudltilayer or high-risesteel structure buildings often use the filler wall to meet the requirements of lateral forceresisting in steel frames. At present the common design method of the structures of this typeconsiders the steel frames to bear all of vertical and horizontal loads, and the filling wall donot involve in the work. However, filler walls will be involved in resisting the commonhorizontal force in fact.In order to study the effect of filler wall on the mechanical properties of steel frame, thepaper simulate the filler wall steel frame structure with the structural analysis softwareANSYS10.0, researches the mechanical properties of filler wall steel frame structures undermonotonic and cyclic load, getting the following conclusion:(1) According to the engineering experience, a finite element model of two layers fillerwall steel frame structure is completed, and researches the mechanical properties undermonotonic and circulaUtion lonadingR. Comeparingg witih sthe stamee sizer steel frame the mechanicalcharacteristics of the filler wall steel frames are analyzed. Under horizontal load, concretefilled wall stress areas are mainly concentrated in the diagonal direction along the stress rangewhich is like a oblique compression bar supporting for the frame structure and restraint thehorizontal displacement of frame. Under cyclic load, the energy consumption performance offiller wall steel frames is good. The stress of filler wall steel frame concentrated in the beamcolumn node and bottom column, and these parts will be damaged first in earthquake. Due todamage caused by structural bearing capacity reduction, filler wall steel frame structure willdamage, and as the main stress components, steel frame still not broken, the reserve ofsecurity of the structure is still adequate. So if the filler wall damaged in the earthquake,displacing the new wall the structure can be used again.(2) Through the variable parameter analysis of3series of12filler wall steel frame finite element models, considering the3parameters axial compression ratio, high-span ratio andconcrete strength which has a significant effect on the performance of perforated concretebrick filled wall steel frames, the effects of various parameters on filler wall steel frames aresystematic researched and analyzed. The research shows: increasing the axial compressionratio of structure, the ductility and energy dissipation capacity will reduce. Reducing the highspan ratio of structure, the bearing capacity and the ductility will decrease. Improve theconcrete porous brick strength of structure, the intensity of the structure will increase but theductility will reduce.