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|Title:||Backfill effects on response of buried reinforced concrete slabs|
|Authors:||United States. Defense Nuclear Agency.|
Hayes, Pamela G.
|Publisher:||Structures Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical report (U.S. Army Engineer Waterways Experiment Station) ; SL-89-18.|
Abstract: The Backfill Effects tests were conducted in various backfill materials and provided data on the response of buried structures to localized point-source loadings. Four tests were conducted in this test series. To represent realistic backfill materials, two low seismic velocity materials, a high-shear-strength flume sand and a low-shear-strength reconstituted clay were used. The high seismic velocity material was obtained by using an in situ clay layer. The test articles were reinforced concrete slabs mounted on a reaction structure for testing. The test slabs had L/t ratios of 5 and 10. The results of this test series show that backfill material makes a significant difference in the response of buried structures. The tests conducted in the low seismic velocity materials had drastically different responses. A breach occurred in the test with the low-shear-strength, low seismic velocity reconstituted clay backfill, and light damage occurred in the test with the high-shear-strength, low seismic velocity sand backfill. Significant damage also occurred in the test with the high seismic velocity backfill. NOTE: This file is large. Allow your browser several minutes to download the file.
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