| Plate-column structure is a kind of structure that consists of plates and columns linked by the node. Normally, edge beams with a certain size are set along the peripheral axis to bear torsion and reinforce the integrity of structure. Although plate-column structure is excellent, there are some problems such as design method and seismic behavior not made clear in the circles of engineering, which retarded spreading this kind of structure. Therefore, the following researches were made in this dissertation.Based on the yield lines theory, the formulas of ultimate load were deduced for plate-column structures with and without edge beams. A method considering the reasonable reinforcement arrangement was proposed to avoid unreasonable failure modes. And the influence of five different disposal forms of prestressing tendons upon the ultimate vertical load on plate girds was analyzed. The preliminary conclusion was obtained that the ultimate load of plate grids were mainly determined by the total number of rebar in plate, profile of prestressing tendon and effective prestress etc.The idea and method that the deformation in the centre of plate grid could be calculated by superposing the two-way strip deformation were proposed, which were verified by model tests results. Using this method, the influence of different disposal forms of prestressing tendon upon the total deflection of plate was analyzed, and a conclusion was made that the more close the prestressing tendon arranged to the column axis, the more effective the total deformation under service load could be controled.The distributive rule of internal force in plate-column structure under vertical uniform load was investigated. In the research, formulas which consider the influence of size of grid, side ratio and column section size were suggested to calculate the ratio of maximum moment to average moment at critical cross section, and an advice on crack control and check of plate-column structure was given.By the pushover analysis and nonlinear time-history analysis, the influence of the number of story, depth of slab, column section size and arrangement of edge beams to seismic behavior of plate-column structure was analyzed. The results showed that the plate-column structures were applicable inâ… ~â…¢soil site of intensity 7 seismic fortification zone when the column seismic degree accords with the plate-column and shear wall structure in"Code for seismic design of buildings (GB50011-2001)"with the number of story less than 8, and the reinforcement meets the demand of calculation and construction measure. The applicable range and design recommendations provide reference for the application of plate-column structure in seismic fortification zone.The applicable ultimate height of plate column-shear wall structure was explored. The distribution of horizontal seismic force between plate-column and shear walls was investigated when the plate-column and shear wall structure entered the plastic phase, and the ratio of maximal interstory shear born by plate-column to the total shear at foundation base was given with different characteristic value of stiffness. The influence of arranging shear walls to the structural torsion effect was analyzed, and the reasonably disposed recommendation of shear walls was given. The nonlinear time-history for plate-column and shear wall structure without and with edge beam, and frame-shear wall structure were analyzed, and the seismic behavior of plate-column and shear wall structure was evaluated. The analysis results show that the 9-story plate-column and shear wall structure were applicable inâ… ~â…¢soil site of intensity 8 seismic fortification zone when the column and shear wall seismic degree accord with"Code for seismic design of buildings (GB50011-2001)", and the reinforcement meets the demand of calculation and constructional measure. According design recommendations were given.
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