In the seismic design of underground structures,the response displacement method and nonlinear dynamic history analysis method are commonly used for the interaction of soil and structure.However,the re-sponse displacement method has too many parameters,the solution process is cumbersome,and the nonlinear dynamic history analysis method takes a long time,which is not conducive to the designers to quickly obtain re-liable design parameters.Based on the study of seismic design of subway structure,in addition to the traditional design method,an easy seismic deign method was developed.The relative displacement between the excavation and the structure was quickly calculated by the free field displacement correction value R,and the results were relatively close to the traditional method.The proposed method can be referenced for the underground structure in the seismic design.
Seismic design of underground structuresFree field displacementResponse displacement methodNonlinear dynamic history analysis method
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