Evaluation of seismic calculation methods for shallow-buried frame structures in soft soil

Yong Yuan, Hai Tao Yu, Zhi Yi Chen

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The discrepancies between seismic designs with equivalent static method (mainly used in China), free-field deformation method and response displacement method (mainly used in foreign countries) were analyzed and evaluated. In analysis, the benchmark model was set up for underground structure in soft soil, and the seismic response of underground structure was acquired by using dynamic time-history analysis. Assuming the same stratum and the same buried depth, based on the discrepancy comparison analysis of different deformations, internal forces, and structural stiffnesses, evaluation of applicability was made for the three pseudo-static seismic design methods. The result shows: equivalent static method can be applied well under the condition of large stiffness of shallow-buried frame structures in soft soil, however in other cases it will lead to over-large deformation and internal force in structure; free-field deformation method can be applied under the condition that the stiffness of structure is relatively small or approaches to that of the surrounding soil; and the pseudo-triangular pressure distribution model is prior to pseudo-concentrated force model; and response displacement method is suitable for seismic design of shallow-buried frame structures with various stiffnesses.

Original languageEnglish
Pages (from-to)50-56
Number of pages7
JournalZhendong yu Chongji/Journal of Vibration and Shock
Issue number8
StatePublished - Aug 2009
Externally publishedYes


  • Pseudo-static method
  • Seismic design
  • Time-history analysis
  • Underground structure


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