An Experimental Research On Seismic Behavior Of Great Size Thin Wall Reinforced Concrete Pipe Columns

The seismic behavior of great size thin wall reinforced concrete pipe columns is discussed through model experimentations and finite element methods in this paper, after taking Air Cooled Condenser system structure of a main factory building of the large capacity power plant as experimentative prototype.Its test specimens are four reinforced concrete pipe columns, they have different ratio of axial compression stress to strength, reinforcement ratio and thickness. By low-cycle and reverse horizontal loading test, their properties including strength property, deformation property and energy property are studied. We study the loading characteristic values;the property of hysteretic curve and skeleton-frame curves;the ductility property and stiffness degradation.Model structure's load-carrying capacity are analyzed with SOLID65 element and PIPE20 element in software's structural calculation module. The result is accord with the Experimental result.Code for design of concrete structures have the bearing capability calculation formulas of reinforced concrete ring sections is confirmed by the result of experiment and software, it can be used in the calculation of great size thin wall reinforced concrete pipe columns. In this paper, moreover some advices for this kind reinforced concrete pipe column's design and constitution are presented.