Dynamic responses of buried pipelines during a liquefaction process

✍ Scribed by L.R.L. Wang; J.S. Shim; I. Ishibashi; Y. Wang

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 794 KB
• Volume: 9
• Category: Article
• ISSN: 0267-7261
• DOI: 10.1016/s0267-7261(09)90009-4

✦ Synopsis

Dynamic response analysis for buried pipelines were performed based on the Rayleigh-Ritz method using the Hamilton's principle for the formulation . The critical evaluations of the soil's pa.rameters were made during the process of soil liquefaction, which include variations of dynamic soil and water pressures, subgrade reactions, and damping coefficient. The analytical results were compared with model experiments in a shaking table. The analytical results were approximately 60 to IOO ~larger than the experimental measurements. One of the reasons of th e discrepancy might be attnbuted to some conservati ve assumptions used in assessing the dynamic lateral earth pressure. It was also found that rigorous evaluation of damping during liquefaction process is significantly critical for the accurate analysis.