Optimization of Tendon Geometry of Post-Tensioned Concrete Bridges using Genetic Algorithms

Generally, the technology of post-tensioned concrete is commonly used in construction of medium and long span concrete bridges all around the world. An opportunity for the active modification of the internal force distribution offered by a variable geometry of post-tensioned tendons is one of the main advantages. Unfortunately these kinds of structure are not usually investigated as optimization tasks. This is because of the complexity of the structure and the presence of many design variables which are often discrete. Our contribution presents one of the first examples of the optimum design of a tendon geometry of three span post-tensioned concrete structures investigated to include the necessary design details with the inclusion of discrete variables.