Reducing damages in structures during earthquake using energy dissipation devices

摘要

A computational algorithm of inelastic structural behavior is used to quantitatively calculate the plastic energy of moment-resisting framed structures. This algorithm uses the force analogy method to evaluate the structural response and energy in the inelastic domain subjected to earthquake excitations. The advantage of using force analogy method is that it directly gives a closed-form analytical equation to evaluate plastic energy due to inelastic deformation in the structure. Energy dissipation devices such as viscous dampers, viscoelastic dampers, and active control are then used to improve the structural performance by providing an alternative path of energy dissipation through the devices and therefore the plastic energy dissipation required in the structure will be reduced. Results show that these energy dissipation devices are very effective in dissipating control energy, and thereby reducing the plastic energy dissipation and damage in the structure.