Key Techniques for Performance-based design of metro depot covered structure

The challenges of developing superstructures on metro train depots include abrupt changes of structural stiffness, discontinuities of vertical structural elements, out-of-current codes, different architectural types, and different construction sequences. This study analyses design process of superstructures on a metro train depot in Shanghai area. The performance-based seismic design is used to design the key structural components. The laboratory shaking table tests are used to simulate seismic responses of depot and superstructure subject to earthquakes. The theoretical analysis and shaking table simulations show the superstructure and depot deformed elastically in moderate earthquakes and will not fail in strong earthquakes. The main factors affecting development of superstructure above metro train depot are analysed. The paper provides useful insights to similar projects.