In order to accurately calculate the sectional stress of reinforced concrete eccentric compression members with different sections, a methodology based on optimization algorithm was proposed, which can take into account the stress redistribution effect of the section after the concrete in the tension zone withdraw from work. Firstly, the Parameters of the neutral axis equation were takcn as optimization variables, and the difference between the resistance moment of the cross section provided by the concrete and all the steel bars in the compres...
