This paper presents computer automated performance-based optimization of strut-and-tie
models in reinforced concrete corbels. The automated performance-based optimization (PBO)
technique is used to develop optimal strut-and-tie models for the design and detailing of
reinforced concrete corbels. The PBO technique incorporats the finite element analysis,
topology optimization theory, performance-based optimality criteria and performance-based
design cocnepts into a single scheme to automatically generate optimal designs. Developing
strut-and-tie models in reinforced concrete corbels is treated as a topology optimization
problem of continuum structures. The optimal strut-and-tie model in a concrete corbel
simulated with finite elements is generated by gradually removing inefficient finite elements
from the corbel in a performance optimization process. Two examples are provided to
demonstrate the effectiveness of the computer automated PBO technique as an advanced
design tool for reinforced concrete corbels.