Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft
Disconnected piled raft (DPR) foundations are characterized by having no structural connection to a raft. The raft-pile gap is filled with a granular cushion, which creates a more uniform pressure distribution on the raft and reduces the differential settlement. A series of tests has been performed...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/3856864 |
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| _version_ | 1850163555294248960 |
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| author | Xiao-jun Zhu |
| author_facet | Xiao-jun Zhu |
| author_sort | Xiao-jun Zhu |
| collection | DOAJ |
| description | Disconnected piled raft (DPR) foundations are characterized by having no structural connection to a raft. The raft-pile gap is filled with a granular cushion, which creates a more uniform pressure distribution on the raft and reduces the differential settlement. A series of tests has been performed to investigate the load transfer mechanisms of a DPR. The effects of the thickness and stiffness of the cushion and the pile diameter are presented and discussed. A simple failure mode of the cushion is also put forward according to the cushion slip plane obtained by using the digital image correlation technique that tracks the pixels in the images and generates a displacement field. Then a new theoretical analysis has been presented for rigid pile composite foundation. Through comparative studies, it is found that the present method is validated as reasonable by laboratory tests and is in agreement with several current design methods. |
| format | Article |
| id | doaj-art-e96ab130fce44adc9449848a6da4d8a5 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-e96ab130fce44adc9449848a6da4d8a52025-08-20T02:22:15ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/38568643856864Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled RaftXiao-jun Zhu0College of Civil Science and Engineering, Yangzhou University, Jiangsu 225127, ChinaDisconnected piled raft (DPR) foundations are characterized by having no structural connection to a raft. The raft-pile gap is filled with a granular cushion, which creates a more uniform pressure distribution on the raft and reduces the differential settlement. A series of tests has been performed to investigate the load transfer mechanisms of a DPR. The effects of the thickness and stiffness of the cushion and the pile diameter are presented and discussed. A simple failure mode of the cushion is also put forward according to the cushion slip plane obtained by using the digital image correlation technique that tracks the pixels in the images and generates a displacement field. Then a new theoretical analysis has been presented for rigid pile composite foundation. Through comparative studies, it is found that the present method is validated as reasonable by laboratory tests and is in agreement with several current design methods.http://dx.doi.org/10.1155/2017/3856864 |
| spellingShingle | Xiao-jun Zhu Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft Advances in Materials Science and Engineering |
| title | Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft |
| title_full | Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft |
| title_fullStr | Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft |
| title_full_unstemmed | Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft |
| title_short | Analysis of the Load Sharing Behaviour and Cushion Failure Mode for a Disconnected Piled Raft |
| title_sort | analysis of the load sharing behaviour and cushion failure mode for a disconnected piled raft |
| url | http://dx.doi.org/10.1155/2017/3856864 |
| work_keys_str_mv | AT xiaojunzhu analysisoftheloadsharingbehaviourandcushionfailuremodeforadisconnectedpiledraft |