Abstract:

In order to rationally determine the constitutive model of ethylenepropylenediene monomer （EPDM） elastic rubber gasket used of joints in shield tunnel and its parameters, a CMT4304 electronic universal testing machine controlled by microcomputer is adopted so as to complete the uniaxial tension and uniaxial compression test; and ABAQUS is used to analyze the experimental data. Considering the compliance and the stability of the material, the optimal constitutive model of the commonly used EPDM rubber material and its parameters are recommended. The results show that: 1) The ArrudaBoyce or van der Waals constitutive model is proposed to describe the EPDM rubbers with Shore hardness of 45 HA and 60 HA. 2) The ArrudaBoyce or Yeoh constitutive model is proposed to describe the EPDM rubber with Shore hardness of 55 HA. 3) The MooenyRivlin constitutive model is proposed to describe EPDM rubber with Shore hardness of 65 HA.

Key words: shield tunnel, ethylenepropylenediene monomer （EPDM） rubber, waterproof, constitutive model, Shore hardness