Study On Structure Of Cable Supported Concrete Floor And It’s Static Characteristics

Cable supported structure system has been gradually widely used in stadium,terminal and other public buildings for it has the characteristics of economic and efficiency. Among the cable support structures, beam string structure,suspend-dome and cable dome developed rapidly and tend mature. A new type of cable supported structure is come into being, namely the cable supported concrete floor structure.Based on the research of cable supported concrete floor structure, in this paper,cable supported concrete floor structure is improved, the improved structure and the construction method are given, and the prestress is designed.On the basis of the theoretical analysis, the static model test study on the structure is carried out. It is shown that, cable supported concrete floor structure is feasible. Through the static model test, the structure displacement of the middle span, 1/4 span and the displacement of X direction,the beam stress, struts stress,cable force and their variation are analyzed.Finally, based on the model tests, the main factors affecting the static mechanical properties of this structure are analyzed by finite element model. The results indicate that the sag-span ratio, the section of the beams, thickness of slab influence the structure stress performance obviously in a certain range; the influence of section of struts and section of cables on the structure are all weak, sometimes the influence even negligible.