To analyze the characteristics of post-tensioned prestressed rocking walls in reducing the structural damage of the wall and the residual deformation after earthquakes through the opening and closing behaviors of the wall toe at the rocking interface

it is necessary to solve the key issues such as the local behavior of the wall toe nodes after the restraint is released

and the relationship between the stress change in the post-tensioned unbonded prestressed tendon and the rocking mechanism arranged along the entire length of the wall. Based on the idea of nonlinear macro-element

multiple axial compression springs were adopted to simulate the opening and closing behavior of the horizontal joint between the wall and the foundation interface as well as the mechanical characteristics of the joint area

and the co-rotating truss element was applied to simulate the force characteristics of the prestressed tendons. The multi-springs model of rocking wall under cyclic reciprocating loading was proposed based on OpenSees

and the simulated hysteresis characteristics

skeleton curve

and energy dissipation capacity were in good agreement with test results. The ratios of the calculated values of horizontal bearing capacity and ultimate deformation of three specimens to the test results were 1.2

0.6

1.061 and 0.3

0.8

0.995

respectively. The model could realize the high-precision prediction of the height of the compression zone reflecting the gap opening and closing of the wall toe

and could simulate the residual deformation and the stress change in the prestressed tendon reflecting its self-centering capacity. The analysis results show that residual lateral displacement ratios of the three post-tensioned prestressed concrete rocking wall specimens under the peak lateral displacement were only 0.060%

0.121%

and 0.124%

respectively

and the structural damage was small. The energy dissipation capacity should be improved while ensuring the structural deformation and recovery capacity.