پرویز ملک زاده

This paper provides a comprehensive examination of the dynamic behavior of buried pipelines under blast loadings to improve the literature in this field. The study presents both analytical and numerical solutions based on the Euler–Bernoulli beam theory to evaluate the response of pipelines surrounded by soil. The soil is simulated as a viscoelastic media by taking into account its damping effect and stiffness to enhance the accuracy of the results. The primary focus is on determining the peak particle velocity (PPV) as a critical parameter in dynamic analysis of such structures. The analytical approach is developed based on the modal analysis, whereas the numerical method discretizes the spatial and temporal domains using the differential quadrature method and Newmark-Beta method, respectively. A detailed examination reveals negligible differences between the results of the two methods. Also, performing the comparison studies with the available experimental results verify the accuracy of presented analytical solution. The parametric explorations of soil and pipeline properties that influence the PPV are conducted. The results demonstrate the importance of considering soil damping in the dynamic response analysis of buried pipelines.