With the development of performance-based earthquake engineering theory, the seismic design of nonstructural components becomes essential. The floor acceleration response spectrum is used as the input for the seismic design of acceleration-sensitive nonstructural components. This study primarily evaluates the seismic demands of structural and nonstructural components, especially for those sensitive to accelerations in transportation complex structures. Initially, three transportation complex structures with different fundamental vibration periods were simplified based on the design model of a transportation complex structure in Beijing with transportation, office and commercial functions. Elastic and inelastic two-dimensional finite element models of transportation complex structures with different fundamental natural periods were established. Subsequently, modal analysis is performed on the three transportation complex structures to compare the dynamic properties of the three simplified two-dimensional models of the soil-structure interaction system. Finally, 10 ground motions each of near-fault pulse and no-pulse ground motions are selected, the peak ground motion (PGA) of the surface ground motions is scaled to 0.07 g, 0.20 g, and 0.40 g, and then back-calculated to obtain the bedrock ground motions as model input for dynamic time-history analysis. The results show that the main trend is characterized by the inelastic models having similar peak floor acceleration (PFA) responses to the elastic models under PGA of 0.07 g, but they generate larger PFA responses under PGA excitations of 0.20 g and 0.40 g. Furthermore, in terms of the transportation complex structures, it is unfavorable for the acceleration-sensitive nonstructural components on the top floor. For both elastic and inelastic models, the floor response spectra (FRS) near the first mode period increase with the increase of story heights. The higher mode response of the taller structure is relatively obvious.