State-of-the-Art and Engineering Example of Study on Damage-Based Seismic Performance for Bridge

The double-parameter seismic damage model considering deformation and energy dissipation can well explain the nature of structural seismic damage, and the damage-based analysis method for seismic performance is always a hot research point in this field. However, there are still some problems existing in the research of the damage-based multi-dimensional seismic performance of bridge structure, such as combination method of double-parameter seismic damage indexes, the construction of damage indices from material, component to whole structure considering multi-dimensional seismic effects, and damage-based probabilistic seismic design method, et al. In this paper, the relevant research was systematically summarized, and the state-of-the-art and development prospect of the seismic performance analysis based on the damage model were analyzed. It is thought that the probability distribution of the existing structural parameters can be well obtained by finite element model validation, and the combination of the damage model considering the multi-dimensional seismic action and the vulnerability analysis will provide a good method to solve the problem of multi-dimensional seismic performance assessment. Finally, based on the seismic damage assessment of reinforced concrete box piers under multidimensional earthquake, the application example of damage-based assessment method was given and provided a useful reference for the damage-based multi-dimensional seismic performance assessment for bridge structure.