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Effects of unreinforced /reinforced sand layers coupled with / without sand columns on bearing capacity – settlement of soft clay
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| Mahmood Reza Abdi *1, Mahdi Safdari Seh Gonbad, Hoshmand Tirandazi |
| 1- , abdi@kntu.ac.ir |
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Abstract: (1797 Views) |
In current paper the effects of surface unreinforced / reinforced sand layers coupled with and without single and group sand columns on the bearing capacity – settlement behavior of soft clays has been investigated. In this regard behavior of soft clay, clay + unreinforced / reinforced sand layer, clay + single / group sand piles and clay + unreinforced / reinforced sand layer + single / group piles samples has been assessed. Geogrid was adopted as the reinforcement, a circular plate 5cm in diameter as the loading surface and C.B.R. apparatus as the loading system. Results show that employing unreinforced / reinforced sand layers at a settlement ratio of 5% improves bearing capacity by 4 t0 7 times the soft clay. Coupling the surface unreinforced / reinforced sand layers with single / group sand piles further increases the bearing capacity by 7 to 9 times that of soft clay.
./files/site1/files/%D8%B9%D8%A8%D8%AF%DB%8C.pdf
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| Keywords: Bearing capacity, soft clay, sand column, reinforcement, geogrid. |
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Full-Text [PDF 1521 kb]
(215 Downloads)
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Type of Study: s |
Subject:
Geotecnic
Received: 2019/10/15 | Accepted: 2020/07/25 | Published: 2021/12/1
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