Study On The Performance Of Concrete Tube Under Additional Loads

In the designing stage of the Ultra-High-rise concrete tube, vertical loads andhorizontal loads are the major consideration. In case different construction schemeshave different effects on concrete tube, additional load is generally not considered in thedesign of construction, but additional load will produce vertical loads and horizontalloads, which will influence the safety of concrete tube in the construction stage.This paper mainly studies the performance of concrete under the additionalconcentrated load. In case its forced mechanism is similar to the mechanism of slabsunder concentrated load, this paper first analyzes the basic theory of punching failure ofplate, comparing the difference of calculation method of punching shear bearingcapacity in several main countries. Secondly, this paper has designed the bearing test of8pieces of reinforced concrete slab, analyzing the effects of boundary conditions andreinforcement ratio on bearing capacity. Finally, various factors which affect the bearingcapacity of slab are analyzed with ABAQUS.According to the test results and finite element analysis, this paper has analyzedwidth-to-thickness ratio, reinforcement ratio, supporting way, edge length ratio ofloading surface, axial compression ratio, concrete strength grade and other factorswhich have effects on the bearing capacity of reinforced concrete slab underconcentrated load.