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Pull-out behavior of headed anchors used in a totally prefabricated counterfort retaining wall system
| 题名： | Pull-out behavior of headed anchors used in a totally prefabricated counterfort retaining wall system |
| 正文语种： | 英文 |
| 作者： | Maen Farhat; Mohsen Issa; Bruno F. J. Prado |
| 关键词： | Embedment depth; fnite element analysis; grout; headed anchor; pull-out |
| 摘要： | The pull-out behavior of headed anchors used in a totally prefabricated precast concrete counterfort retaining wall system was examined experimentally and analytically using nonlinear fnite element analysis. Precast concrete blocks (533 × 508 mm [21 × 20 in.]) having a truncated shear pocket identical to those used in the totally prefabricated counterfort retaining wall were prepared, grouted with headed anchors, instrumented, and experimentally tested. The study includes the following parameters: two block thicknesses of 355 and 152 mm (14 and 6 in.); two types of headed anchors and two types of concrete grout certifed by the Illinois Department of Transportation; bar sizes 19M, 22M, 25M, and 29M (no. 6, 7, 8, and 9); and embedment depths of 317, 254, 203, and 152 mm (12.5, 10, 8, and 6 in.). The blocks were tested under axial tensile loading conditions. The structural behavior of the pull-out specimens was characterized by the fracture of steel anchors, regardless of their size and embedment depth. Concrete breakout was witnessed in 355 mm (14 in.) thick concrete specimens made with 29M headed anchors and 152 mm (6 in.) embedment depth only when the specimen was tested to ultimate. The experimental test results were verifed using fnite element analysis and compared with design methods and other studies in the literature. The results showed close correlation with the American Institute of Steel Construction’s guidelines. |
| 出版年： | 2019 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 期： | 1 |
| 页码： | 81-98 |
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