Author(s)

S. Takada, T. Suzuki, T. Koike, J. Ueno, Y. Ogawa, N. Oguchi, T. Kitano, M. Matsumoto

Abstract

Seismic design of buried pipelines for liquefaction-induced large ground displacement S. Takada% T. Suzuki^ T. Koike^, J. Ueno\ Y. OgawaN. Oguchi*, T. Kitano , M. Matsumoto* ^Kobe University, Japan ^Toyo University, Japan ^Kawatetsu Engineering Ltd., Japan *Konoikegumi Co., Japan * Osaka Gas Co., Japan ^ Tokyo Gas Co., Japan ^Toho Gas Co., Japan ^Sumitomo Metal Industries Co., Japan Abstract A practical method to estimate the structural strains of buried pipelines under lateral spreading in the liquefied ground is proposed. Two different patterns of ground deformations at slope and revetment are selected as the typical lateral spreading modes. The shell/beam hybrid model is used to analyse the inelastic behavior of buried pipes, using the FEM code of ABAQUS. For the practical formulation conforming to those FEM results, the plastic limit analysis method is adopted to deal with the plastic behaviors of pipeline systems. Finally, a simplified design formula is deduced to eval

Keywords