Bridge Structure Impact Modelling
The response of single storey structures subject to earthquake loading in which impact may occur between the structures is investigated. These structures represent bents of a bridge which may have different masses strengths and stiffness and an expansion joint where deformation may occur. The likelihood of increase in response due to impact was quantified in a probabilistic sense for different normalized distances between the structures. The increase of displacement relative to the damage on the structure is computed for ranges of periods. The effect of including a high-force-tovolume (HF2V) lead dissipater between the parts of the bridge is then considered and it is shown that the device does not significantly affect the response in this case.