Nonlinear seismic oscillation damage analysis method for reinforced concrete sluice-foundation-water body system

The invention discloses a method for analyzing nonlinear seismic oscillation damage of a reinforced concrete sluice-foundation-water body system, which comprises the following steps of: establishing a three-dimensional finite element model of a sluice chamber structure comprising a foundation, a water body, a sluice pier, a sluice bottom plate, a steel sluice gate, an upper hoist room structure and reinforcing steel bars according to the structural characteristics of the sluice chamber structure, and simulating the nonlinear seismic oscillation damage of the reinforced concrete sluice-foundation-water body system by adopting a finite element numerical simulation technology; on the basis of viscoelastic artificial boundary conditions, an infinite foundation radiation damping effect, concrete dynamic damage, a bonding slippage effect of reinforced concrete and a fluid-solid coupling effect of a water body and a water gate structure are considered, and nonlinear seismic oscillation damage analysis is carried out