| Phosphogypsum cavity girderless floor is the king of whole-cast-in-place floor using a precast cavity phosphogypsum model box as a permanent construction formwork. The structure is of light deadweight, strong stiffness, fast construction as well as environmental protection, which makes it suitable for underground parking lot of high-rise building and multi-story building, podium for business use and large-bay buildings such as office buildings and teaching buildings. As this structure has been being used in constructions for too long, studies on its mechanical properties still have lots of blankets. As a result, to have a better understanding of its static and dynamic mechanical properties becomes more and more important.Studies on slab-column joints of phosphogypsum cavity girderless floor with finite element method are as follows:1.Elastic finite element analysis on stress distribution deformation difference of phosphogypsum cavity girderless floor and ordinary thick plate floor under horizontal and vertical load has been done, the reason of which has also bend analyzed.2.Affections to slab-column joints mechanical properties of phosphogypsum cavity girderless floor by width and height of solid beam section on post boarding has been analyzed. The reasonable range of width and height of solid beam section on post boarding has been determined.3.Elastic-plastic finite element analysis on slab-column joints of different height of solid beam section on post boarding has been conducted. The failure mode and stress change before and after concrete cracking of corner column joint has been studied.4.According to the above studies, simplified design, construction requirement and application in high-rise building of slab-column joints of phosphogypsum cavity girderless floor has been discussed. |
PDF Full Text Request