New type of two-way concrete composite slab with precast prestressed ribbed panel(including preparative holes in the rib) is put forward to solve the problems in traditional prestressed concrete composite floor.Based on the particular structural feature and integral action between precast ribbed panel and combined interface concrete two-way effects are proposed.The finite element analysis by ANSYS10.0 program is conducted.The existence and the variation tendency of two-way effects under the loads in different conditions are researched by large numbers of models,which provides a basis for the further investigation on property of the floor structure.
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