Simplified Plastic Design Method for Two-way Composite Slab with Precast Combined Ribs Panelsand with Two Opposite Supported Sides and the Other Two Clamped Edges
At present,the two-way composite with pricast combined ribs panal sand slab(two-way composite slab)has been widely used.In view of the complex design and calculation of two-way composite slab,the design and calculation of two opposite supported sides and the other two clamped edges two-way composite slabs are studied based on the plastic stranding method.The ultimate bearing capacity of the two-way composite slab is deduced and determined.The position of the plastic strand is determined,and the ultimate uniform load and ultimate bending moment are solved.The limit equilibrium method is used to simplify the analysis of the formula for the ultimate bending moment of the two-way composite slab,and the simplified plastic formula for the ultimate bending moment is obtained.A simplified formula is used to solve the two calculation examples,and the results show that the simplified formula of this paper can be used for the calculation of two opposite supported sides and the other two clamped edges two-way composite slab,and the simplified plastic calculation formula is easy to calculate.It is conducive to popularization and use in engineering design.