Cable optimization of extradosed bridges

Abstract

Extradosed bridges offer a competitive alternative to traditional systems used in spans ranging from 100 to 250 m. The trend in the world is the development of new materials and with it the design of thin structures, which is a challenging change for further development. Extradosed bridge is a relatively new type of construction (first in Odawara, Japan 1994), although there are many bridges of this type in the world, there are no strict design rules in terms of statics and even less in terms of dynamic behavior. To research this area closer, parametric analysis can be performed. Due to the complexity of this task and the non-linear coupling of the design parameters, it is necessary to approach it by an optimization method that, for predefined boundary conditions, optimizes the design response.