Research on reinforcement ratio of reinforced concrete column under long-term load
Under the long-term load action of reinforced concrete column, when considering the unloading effect, the concrete in the column will produce tensile stress, and the amount of reinforcement will directly affect the size of the tensile stress, thus affecting the safety of the structure. Through a simplified analysis method, the calculation formula of the reinforcement stress and concrete stress in the column before and after unloading is derived, and in the stress analysis, Considering the creep of concrete and the timeliness of elastic modulus, and combining with various specific relevant parameters, the influence of column height and reinforcement ratio on the maximum average stress of concrete in the column is analyzed. Finally, the calculation method of maximum reinforcement ratio is proposed.
