Study on Seismic Damage Mode and Key Construction Damage Mechanism of Highway Pile-Plate Structure

The seismic design concept based on performance for bridge structures is an important direction for the continued improvement and development of bridge seismic design specifications. One of the key aspects is to choose reasonable indicators for defining and quantifying the seismic performance level of bridge structures. In this article, the Incremental Dynamic Analysis (IDA) method was used to simulate the entire earthquake damage and failure process of a rigid frame bridge with a high pier. The findings reveal that, in sleeve-type and bolted-type connection pile-plate structures under far-field and near-field seismic motions, different prefabricated pile positions and joints carry the same seismic force during the earthquake process. However, under far-field and near-field earthquakes, the state of the prefabricated pile pile bottom and connection structure differs under different Peak Ground Acceleration (PGA) levels.