State Key Laboratory of Coastal and Offshore Engineering

A body-fitted coordinate substructure method for highly flexible structures: Theory and application to offshore wind turbines

Highly flexible structures are prone to global geometric nonlinearity under strong environmental loads because of their low lateral stiffness and slender configurations. Such nonlinear behavior is typically dominated by large overall rotations, while the deformation may remain re...

Experimental study on artificial marine clay: Preparation and structural characteristics

Laboratory testing is a fundamental approach in marine geotechnical engineering; however, obtaining undisturbed submarine deposits remains technically challenging and economically costly. Therefore, developing effective methods to simulate marine clay under controlled laboratory...

Information-theoretic development of a finite-wavelength-corrected ground-motion intensity measure for underground structures

The appropriate selection of ground-motion intensity measures (IMs) directly affects the reliability of probabilistic seismic demand models and fragility assessments for underground structures. To address the limitations of existing studies, which have primarily focused on screen...

An improved seismic fragility analysis framework with reduced dependence on predefined probabilistic demand-model assumptions

In Performance-Based Earthquake Engineering (PBEE), traditional seismic fragility assessments rely heavily on a priori statistical assumptions, such as log-normal distributions and homoscedasticity. These assumptions frequently fail to represent the profound heteroscedasticity an...

Numerical study on track-sediment dynamics and travel stability of deep-sea mining vehicles

The travel stability of deep-sea mining vehicles is critical for ensuring the operational efficiency of deep-sea mining systems. This study developed a numerical travel model using the MBD-DEM method and validated its accuracy through travel experiments. Considering the effects o...

Exponential strain energy density-based dynamic failure criterion for jacket offshore wind turbines under extreme seismic loading

Jacket offshore wind turbines (OWTs) are increasingly deployed in seismically active regions. However, existing failure criteria for OWTs under seismic loading rely on empirical displacement or stress thresholds that lack theoretical justification. To address this, the present st...