This paper presents a comprehensive review of the strategy of scaled modeling utilized in underwater shaking table (UST) model tests on marine structures subjected to coupled earthquake and wave–current action. The key performance parameters of USTs are introduced and strategies of scaled modeling adopted in existing UST model tests are summarized and discussed.

This paper explored the dynamic response of liquid within a rigid cylindrical water tank subjected to harmonic excitation through vibration table tests, analyses, and numerical simulations. Using the Laplace equation and the Bessel function of the first kind, the analytical formula of liquid dynamic response was derived. A numerical model was established by ANSYS software to verify the accuracy of the analytical solution.

Unlike the traditional shaking table tests without water, the mass density similitude ratio of water mismatches with that of the specimen, which leads to an inconsistent scale of the hydrodynamic forces and the inertia forces of the specimens. A new scaled model design method based on the coordinative similitude law is proposed and it increases the hydrodynamic forces of the model using attached plates to ensure the consistency of the similitude ratio of hydrodynamic forces and inertia forces. The coordinative scaled model with attached plates can predict the responses of the prototype with high accuracy, and thus is recommended to be used in the underwater shaking table tests.

In this paper, the real-time hybrid simulation method was improved based on neural networks, and an offline iterative hybrid simulation method based on neural networks was implemented. Taking the tuned damping structure as examples, the dynamic metamodels of the tuned mass damper and tuned liquid damper were established based on the long-short time memory neural network, and the model was iteratively simulated globally with the 9-story benchmark model to calculate the response of the damping structure.

In this paper, the scaling methods are summarized into three levels, the material similarity, the component similarity, and the structure similarity. A scaling method for steel-reinforced concrete composite structures was proposed based on the component similarity, and experiments were conducted to verify the proposed method. A 1/25 scale model of a steel-reinforced concrete composite structure was designed based on the proposed method and tested on a shaking table to evaluate the seismic performance of its prototype.