Column Forces in a Buried Modular-Polymer Stormwater Collection Structure from Design-Truck Loading
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 146, Issue 7
Abstract
Results from full-scale physical experiments are reported to quantify the column forces that develop in a modular, polymer stormwater collection structure when buried at its minimum soil cover and subjected to design-truck loads. Columns located directly beneath the load pad experienced the largest increments in force from surface load. Load was also transferred through the soil and the structure to nearby columns. The four central columns carried on average 31% of the applied nominal design-truck load. Column forces from backfilling were found to be only 10% of the response from surface load. Factored column demand at the service design load (107 kN) was equal to 0.45 and 0.64 times the buckling resistance of the 0.6-m and 0.9-m-long columns tested. For the conditions tested, the columns satisfy AASHTO load and resistance factor design requirements against individual column buckling with a resistance factor of 0.7.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The physical experiments were funded by Brentwood Industries. New insights into column force distribution were funded by the Natural Sciences and Engineering Research Council of Canada. The experimental facility was developed with funds from the Canada Foundation for Innovation and the Ontario Innovation Trust. The assistance of Mr. G. Boyd in conducting the physical experiments is gratefully acknowledged.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 146 • Issue 7 • July 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jul 14, 2019
Accepted: Jan 14, 2020
Published online: May 11, 2020
Published in print: Jul 1, 2020
Discussion open until: Oct 11, 2020
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