Research on equivalent calculation model of reinforced truss concrete floor slab based on vibration analysis
When using numerical simulation to analyze the vibration characteristics of reinforced truss concrete floor slab,it is more complicated to establish a solid model,especially for large-span floor structure.The number of solid model elements is large,which brings difficulties to finite element analysis.In order to simplify the modeling process,a new method to establish an equivalent simple model based on the principle of stiffness equivalence was proposed.The isotropic equivalent model of reinforced truss concrete one-way slab and two-way slab were established respectively.The finite element simulation results and the floor test results were compared and analyzed to verify the feasibility of the equivalent model.The results show that the results obtained by the two models are in good agreement,and the isotropic equivalent model can fully meet the accuracy requirements.The computational time required to solve the problem using isotropic equivalent model is only about 1%of that of the 3D solid model,which greatly saves computing resources and improves modeling efficiency.
vibration characteristicreinforced truss concrete floor slabisotropic equivalent modelstiffness equivalent model
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