Optimal prestress in modal analysis via induced temperature modelling

The optimal prestress reinforcement of civil engineering structures is studied here. A modal analysis framework, which is widely adopted for the dynamic, aseismic design, is assumed. The prestress action is modelled by means of induced temperature fields in the prestress cables, an option which facilitates the numerical treatment by means of general purpose finite element software. The optimal choice and the optimal placement of the tendons are treated by a ground (sub) structure technique. The proposed method is illustrated by means of numerical examples.