Seismic Response of Parallel Double Pipelines to Longitudinal Ground Motions
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 13, Issue 1
Abstract
The failure of one pipeline may compromise the integrity of adjacent pipelines, especially for closely spaced parallel pipelines. This paper presents a series of multipoint shaking table tests of parallel double pipelines, which were installed in sand beds with three different spacing values to assess the effect of spacing on the seismic response of parallel pipelines. The acceleration and strain data were collected during the shaking tests. The results demonstrated that the acceleration response of soil between the two pipelines under uniform and nonuniform excitation was relatively lower than that of the pipelines due to the influence of the adjacent double pipelines, especially for the nonuniform excitation case. The maximum peak strain values of both pipelines gradually increased as the spacing between them increased under uniform excitation at lower loading intensity. However, for nonuniform excitations and uniform excitation of higher loading intensity, the maximum peak strain of pipelines with spacing of 150 mm was smaller than that with spacing of 100 and 200 mm. These results indicate that the combination of different pipeline spacings and nonuniform excitation could make the pipeline dynamic response more complicated, which should be properly considered in the seismic design of parallel double pipelines.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was funded by the National Youth Science Foundation of China (No. 51808018), Beijing Municipal Education Commission Science and Technology General Project (No. KM201910005022), and National Natural Science Foundation of China (U1839201). The financial supports are greatly appreciated.
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© 2021 American Society of Civil Engineers.
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Received: Feb 26, 2021
Accepted: Sep 8, 2021
Published online: Oct 18, 2021
Published in print: Feb 1, 2022
Discussion open until: Mar 18, 2022
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