Upheaval buckling of underground pipelines of complex configuration located in liquefied soilsB. Mardonov, I. Mirzaev, N. A. Nishonov, E. V. An and E. A. KosimovE3S Web of Conf., 401 (2023) 02041DOI: https://doi.org/10.1051/e3sconf/202340102041