| Slab-column structure is used of beamless roof, it has characteristics of simplestructure,simple load transfer,increased floor height and so on.Slab-column structure isfavored by more and more people, and it has been widely used in large publicbuildings,such as large shopping malls,warehouse and parking garage.But there arealso some defects of slab-column, stress mechanism is complex, lateral stiffness isrelatively small, and seismic energy dissipation capacity is poor. Perfect design theoryis not formed so far, so the system was resuited to have a lot of restrictions in thepromotion and application in China.In this paper, based on the study and comparison of slab-column structurecalculation method, firstly, according to the characteristics of each board grid ofslab-column structure in different constraint situation, the board grid was classified asthree different board grids of internal board grid, side board grid and angle board grid.The mechanical performance and its influencing factors of the three board grids weredeeply studied under the vertical loads by using finite element software SAP2000,sothe weak parts were found out. Secondly,Moment distributions of three board gridswere compared in the case of boundless beam and edge beam, and affect of edge beamto varieties of board grid was analyzed. Finally, affect of parameters to momentdistributions of control section were found, such as column grid size, board grid edgelength ratio and ratio of column cross-section width and column grid size, referenceswere provided for design of slab-column structure. |
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