Comparative Study on Transverse Seismic Design Method of Utility Tunnel

Abstract

The response displacement method (RDM) and the response acceleration method (RAM) were studied and summarized from the principle and the calculation step. A typical double compartment utility tunnel model was established. The seismic response of the utility tunnel was calculated by RDM, RAM and time history method (THM) respectively. The accuracy of the two pseudo-static methods was analyzed based on the calculation results of THM. In order to analyze the universality of the two methods in utility tunnel, the following 4 parameters were changed in the calculation: soil type, seismic wave type, PGA and structural stiffness. The analysis of the calculation results shows that the two pseudo-static methods all have high accuracy, but the RAM is more accurate.