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Earthquakes and Structures Volume 22, Number 4, April 2022 , pages 431-437 DOI: https://doi.org/10.12989/eas.2022.22.4.431 |
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Seismic response of pipes under the effect of fluid based on exact solution |
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Yanbing Liu, Mohamed Amine Khadimallah and Amir Behshad
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| Abstract | ||
| One of the best choice for transportation of oil and gas at the end of rivers or seas is concrete pipelines. In this article, a concrete pipe at the end of river is assumed under the earthquake load. The Classic shell theory is applied for the modelling and the corresponding motion equations are derived by energy method. An external force induced by fluid around the pipe is asssumed in the final motion equations. For the solution of motion equations, the differential quadrature method (DQM) and Newmark method are applied for deriving the dynamic deflection of the pipe. The effects of various parameters including boundary conditions, fluid and length to thickness ratio are presented on the seismic response of the concrete pipe. The outcomes show that the clamped pipe has lower dynamic deflection with respect to simply pipe. In addition, with the effect of fluid, the dynamic defelction is increased significantly. | ||
| Key Words | ||
| concrete pipe; dynamic analysis; earthquake load; fluid force; numerical method | ||
| Address | ||
| Yanbing Liu:Beijing Earthquake Agency, Beijing 100080, China Mohamed Amine Khadimallah:1)Prince Sattam Bin Abdulaziz University, College of Engineering, Civil Engineering Department, Al-Kharj, 16273, Saudi Arabia 2)Laboratory of Systems and Applied Mechanics, Polytechnic School of Tunisia, University of Carthage, Tunis, Tunisia Amir Behshad:Faculty of Technology and Mining, Yasouj University, Choram 75761-59836, Iran | ||