Modularization in Regions of High Seismic Risk

摘要

Modularized petrochemical projects are sometimes located in regions of high seismicity. When this occurs the designer is required to balance the structural stiffness and overall strength requirements of transportation loads with the ductility and detailing requirements of earthquake design. If the seismic and transportation loads are not handled effectively, then the resulting modular design can become unnecessarily costly, bulky, and inefficient. Seismic ductile detailing typically involves using elements within the lateral force resisting system as a fuse for energy dissipation and controlling structural deformation while maintaining the overall strength of the system. The typical goal for seismic design is life-safety. The structural system is expected to experience controlled damage under design level earthquake loads. Conversely, module structures are expected to withstand transportation loads without damage or loss of serviceability. This paper provides guidance for the design of modules located in regions of high seismicity and provides recommendations for dealing with seismic ductility requirements and module transportation loads.