Wang C., Zhao J., Ding M., 2015, Model Test Analysis of the Plastic Energy Dissipation Effect of Pile Foundation for Bridge Structure, Chemical Engineering Transactions, 46, 691-696.
To study the plastic energy dissipation effect of foundation soil on nonlinear seismic response of bridges with pile foundations, a scaled pseudo-static model test of single pier bridges with pile foundations is performed. Based on the test result and motion features of piles with reciprocating loading, the analysis model of nonlinear seismic response of bridges with pile foundations has been built and pseudo-statically examined with reciprocating loading. This model has been built with the consideration of horizontal compression-only nonlinearity and vertical friction effect of pile side soil and nonlinear indentation and lift-off effect of pile tip soil. The test has showed that, on the condition that bearing capability of the pier is high, foundation soil enters the plastic deforming stage, which produces the plastic energy dissipation effect when the earthquake occurs. The result of theoretical analysis has great similarity with the test result on bearing capability and hysteresis loop features, which shows that the analysis model of nonlinear seismic response of bridges with pile foundations can be applied to analyze nonlinear seismic response.
