Research on the Most Economical Reinforcement of Different Underground Structure Characteristic Slab Span Based on Genetic Algorithm
The article establishes a mathematical model for the most economical reinforcement ratio of underground structural feature slab span based on genetic algorithm,transforming the problem of solving the most economical reinforcement ratio of slabs into an optimization problem.The mathematical model considers both the ultimate limit state of bearing capacity and the limit state of normal use,analyzes the variation laws of the most economical unit slab width cost and the most economical reinforcement ratio under different slab spans and cover soil thicknesses of underground structures,obtains the fitting formula of the most economical unit slab width cost,and further studies the relationship between the most economical slab reinforcement ratio and the comprehensive unit price of steel bars and concrete,providing support for the optimization of the structure design of underground structure slab.