STUDY ON THE ECONOMICAL EFFICIENCY AND PERFORMANCE COMPARISON BETWEEN REINFORCED CONCRETE HOLLOW GIRDERLESS FLOOR AND COMMON FLOORS

摘要

This paper introduces the calculation method of reinforced concrete hollow girderless floor. With this method, the quantity of the reinforced bar and concrete needed in reinforced concrete hollow girderless floor is computed. And unit material quantity of reinforced concrete hollow girderless floor is compared with that of waffle floor, flat slab and ribbed floor, unbonded prestressed concrete floor with the same span and loads. On this basis, unit square costs of floors are calculated according to market price of materials and economical efficiency comparison is conducted for floors. Then the performance of the hollow floor is presented, compared with that of other floors. Through comparison and analysis, it is concluded that service performance and economical efficiency of hollow girderless floor are better.