| That set prestressed steel in the slab-column structure is frequently used in construction of a building structure form, it can enhance the strength of slab-column structure nodes, reduce the various damage under seismic action. On the basis of the previous experimental study, it is closer to get the actual seismic action which includes column joints of performance data from a numerical simulation of the whole slab-column structure. The set the prestressed, bending steel plate column structure was studied on numerical simulation of seismic performance. Slab-column structure model of seismic fortification intensity of7degrees, II, site design earthquake group1, vertical and horizontal to3layer3across,6,3across the slab-column structure, through the finite element software ABAQUS research content is as follows:(1) Response spectrum analysis was on the model, it was found that at the bar and prestressed slab-column structure is relatively less natural vibration period through the response spectrum analysis, comparing the natural cycle of every model set bending its stiffness increases to a certain extent, but according to its smaller growth, the structure of the stiffness difference is not big for the overall slab-column structure. Comparing floor on the every model of absolute displacement and the maximum stress value, the absolute displacement and maximum stress value is relatively reduced after set up bending steel and prestressed reinforcement, but the effect was not big.(2) Nonlinear time history was analyzed, the stress, strain and strain of concrete slab-column node and contrast of a cloud were studied by different displacement time history of slab-column structure and the acceleration time history curve. The time history curve of each model had no obvious difference. The slab-column node set the prestressed and reinforced after bending will not be effectively enhance the robustness of structure as a whole. The north and south direction of each model of acceleration time history curve are no significant difference, and the maximum acceleration of time basic did not change, but the slab-column node set of prestressed steel and bending of steel structure, whose nodes were increased lead to different models of vertical acceleration of the small peak in different peak or peak lag situation happened. Slab-column node set of prestressed reinforcement is more effective than set effective reinforced reduces the strain of concrete slab-column node and injury.(3) Through the analysis of the results of nonlinear time history analysis and different models the energy curve of slab-column structure, there are little difference among slab-column structure of viscoelastic energy dissipation, but the non elastic dissipation energy difference is bigger. Every model in seismic influence strongest moment began to appear the elastic dissipation of energy, and the ability of ordinary plate column and set up effective reinforced plate column structure of inelastic dissipation is relatively poor. After slab-column node set prestressed reinforcement, the inelastic dissipation can obviously decrease, and the plastic deformation of the slab-column structure is less. The integrity of the structure is stronger, and the seismic effect is better. |
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