Abstract：To study the dynamic strengths of municipal solid waste(MSW)，the dynamic triaxial tests on artificial MSW samples were performed by using moderate-scale dynamic triaxial apparatus. It was found that the dynamic pore water pressure was considerably dependent on the dynamic strain. When the cyclic number exceeds a certain value，the dynamic pore water pressure of MSW will approach to a steady state；and the liquefaction was not found in vibration process. Based on the different strain failure criteria and the equivalent cyclic number，the dynamic strength parameters are obtained，which can be used in dynamic stability analysis of landfill. The dynamic strength curve of MSW has good normalization behavior；and through some representative tests，the expression of dynamic stress-strain relation of any equivalent cyclic number is achieved for different initial stresses，which can offer calculation formula and test parameters for estimating seismic settlement.
