Structural Selection And Technical And Economical Analysis Of Reinforced Concrete Floor

Floor system as the horizontal load-bearing structural system, not only plays a supporting vertical load and horizontal load transfer function, or vertical load-bearing structure of horizontal support.The floor is equivalent to the horizontal baffle, provide sufficient in-plane stiffness, can gather and transfer horizontal loads to the vertical lateral force on the structure, the whole structure of collaborative work.Especially when the vertical lateral force resisting structural layout of irregular or the anti lateral force structure deformation is not at the same time, the floor is more prominent and important.At the same time the floor used to connect each floor level component and vertical component, maintaining the whole structure, the structure has good integrity, ensure the reliability of structure force.In multi-storey and high-rise buildings, reasonable selection of floor system, not only can improve the mechanical behavior of the structure, and can ensure the bearing capacity,stiffness, durability of buildings, seismic performance;On the other hand, floor structure in concrete structure material consumption accounted for the entire structure material dosage of 30%- 40%, reasonable selection of the type of floor can greatly reduce the cost of the whole project.The research content of this paper is the analysis of the three kinds of comm on concrete floor structure selection and technical economy. Selected 1) cast-in-pl ace concrete cross beam floor;2) cast-in-place ribbed floor; 3) of cast-in-place con crete hollow floor, the seismic fortification intensity under different(6degrees,7deg rees,8degrees)different span(8.1m X8.1m,16.2mX12.96 m, 16.2mX16.2m), and the li ve load different under the(3.0KN/m2, 10.0KN/m2, 20.0KN/m2)and according to the corresponding standard case the analysis and calculation of three kinds of diff erent structure forms of the floor, the three floor structure system in each span def lection, crack width and steel bar, the economic index of concrete, template dosag e, height of structure, cost and so on from the structure stress performance,cost,c onstruction technology aspects of comprehensive analysis, the selection of scheme on the floor different span, designers for reference in the design stage.