Study on Field Shock Test for Buried Pipelines

Field shock test was performed and analysis is given in order to verify the vibration parameters listed in China Antiseismic Design Code for Long Distance Pipelines. And the seismic stress on soft/hard foundation is also included in the content of analysis. The shock system for seismic motion with rocket fuel as the energy can help define the strain change of the buried pipeline influenced by the seismic waves. This is a new attempt in anti-seismic research of buried pipelines and provides a new shock method for the future field experiment for buried pipelines. Through Comparison between tested strain patameters and simplized calculation of str ain paramaters listed in Chinese Codes. the set values seen in the Chinese Codes are vetified, thus defining the vibration parameters of anti-seismic calculation for buried pipelines. Proposed parameters and mathematic models used for analysis are given in the paper. Based on the verification of the theoretical analysis and mathematic models through field tests research is also done on the seismic reaction of the pipelines buried in soft/hard foundation. The curve shown in the paper indicates that the ratio value of the pipeline axil strain changes with the change of ratio value of motion shear modulus.