| Combination of flat slab floor can build more structure floor in the same buildingheight for it reduces the floor structure layer by half and increases the clear height ofbuilding, so combination of flat slab floor improved the space utilization.Part of the steelbeam were wrapped in the concrete, and the fire prevention and anti-corrosion performanceof the structure were improved.Combination of flat slab floor use precast slab form whichcan be production in factory, so we can reduce the workload of the construction site andaccelerate the construction speed and shorten the time limit for a project.Combination offlat slab floor has been used widely in foreign countries especially in Britain and northernEurope for its many advantages.At present, combination of flat slab floor is one-waybearing plates in the engineering application, but it limits the flexible layout of architecturalspace limits the flexible layout of architectural space.The main research contents of this paper are as follows:(1)Summarize several mechanical performance of combination of flat slab floor, andpropose a new two-way steel flat slab floor on the basis. And introduce characteristics andconstruction technology of the new floor in detail.(2) Analysis of he new type floor by several elastic computing methods, such as thecross beam method, the method of bidirectional board, plate method. And compares thecalculated value with software.(3)Analysis of he new type floor using plastic internal force redistribution calculationmethod.(4) Calculate the ultimate bearing capacity for the combination of flat slab floor usingthe plastic hinge line design method, which also called ultimate balance theory. |
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