Modified p-y Curves Method Based on Degradation Stiffness Model of Sand
Most of the existing p-y curves are based on the model test results of small-diameter pile under cyclic loading of finite times, which makes it difficult to accurately describe the displacement accumulation of large-diameter pile under long-term horizontal cyclic loading and the cyclic weakening cha...
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Editorial Office of Journal of Shanghai Jiao Tong University
2020
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oai:doaj.org-article:2436cc5f31334c32b77d7abb524521142021-11-04T09:34:51ZModified p-y Curves Method Based on Degradation Stiffness Model of Sand1006-246710.16183/j.cnki.jsjtu.2019.094https://doaj.org/article/2436cc5f31334c32b77d7abb524521142020-12-01T00:00:00Zhttp://xuebao.sjtu.edu.cn/CN/10.16183/j.cnki.jsjtu.2019.094https://doaj.org/toc/1006-2467Most of the existing p-y curves are based on the model test results of small-diameter pile under cyclic loading of finite times, which makes it difficult to accurately describe the displacement accumulation of large-diameter pile under long-term horizontal cyclic loading and the cyclic weakening characteristics of soil. Therefore, based on the subroutine provided by Abaqus, a stiffness degradation model of the pile-soil system considering the long-term cyclic weakening effect of sand was established, and the p-y curves of large-diameter pile were obtained based on numerical analysis. Then, by introducing the concept of cyclic reaction ratio, the stiffness degradation factor of the pile-soil system was obtained, and the initial foundation reaction modulus was modified as well. Finally, a modified p-y curves method based on the degradation stiffness model of sand was proposed. By comparing with the test results, the validity of this method is verified. This modified p-y curves method, which is able to consider the effects of loading characteristics, number of cycles, cyclic weakening of sand stiffness, provides a concise and effective analysis method for the preliminary design of monopile foundation under long-term horizontal cyclic loading.HU AnfengNAN BowenCHEN YuanFU PengEditorial Office of Journal of Shanghai Jiao Tong Universityarticlesandmonopiledegradation stiffness modelscale effectcyclic loadingp-y curvesEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156Naval architecture. Shipbuilding. Marine engineeringVM1-989ZHShanghai Jiaotong Daxue xuebao, Vol 54, Iss 12, Pp 1316-1323 (2020) |
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DOAJ |
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DOAJ |
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sand monopile degradation stiffness model scale effect cyclic loading p-y curves Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989 |
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sand monopile degradation stiffness model scale effect cyclic loading p-y curves Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989 HU Anfeng NAN Bowen CHEN Yuan FU Peng Modified p-y Curves Method Based on Degradation Stiffness Model of Sand |
| description |
Most of the existing p-y curves are based on the model test results of small-diameter pile under cyclic loading of finite times, which makes it difficult to accurately describe the displacement accumulation of large-diameter pile under long-term horizontal cyclic loading and the cyclic weakening characteristics of soil. Therefore, based on the subroutine provided by Abaqus, a stiffness degradation model of the pile-soil system considering the long-term cyclic weakening effect of sand was established, and the p-y curves of large-diameter pile were obtained based on numerical analysis. Then, by introducing the concept of cyclic reaction ratio, the stiffness degradation factor of the pile-soil system was obtained, and the initial foundation reaction modulus was modified as well. Finally, a modified p-y curves method based on the degradation stiffness model of sand was proposed. By comparing with the test results, the validity of this method is verified. This modified p-y curves method, which is able to consider the effects of loading characteristics, number of cycles, cyclic weakening of sand stiffness, provides a concise and effective analysis method for the preliminary design of monopile foundation under long-term horizontal cyclic loading. |
| format |
article |
| author |
HU Anfeng NAN Bowen CHEN Yuan FU Peng |
| author_facet |
HU Anfeng NAN Bowen CHEN Yuan FU Peng |
| author_sort |
HU Anfeng |
| title |
Modified p-y Curves Method Based on Degradation Stiffness Model of Sand |
| title_short |
Modified p-y Curves Method Based on Degradation Stiffness Model of Sand |
| title_full |
Modified p-y Curves Method Based on Degradation Stiffness Model of Sand |
| title_fullStr |
Modified p-y Curves Method Based on Degradation Stiffness Model of Sand |
| title_full_unstemmed |
Modified p-y Curves Method Based on Degradation Stiffness Model of Sand |
| title_sort |
modified p-y curves method based on degradation stiffness model of sand |
| publisher |
Editorial Office of Journal of Shanghai Jiao Tong University |
| publishDate |
2020 |
| url |
https://doaj.org/article/2436cc5f31334c32b77d7abb52452114 |
| work_keys_str_mv |
AT huanfeng modifiedpycurvesmethodbasedondegradationstiffnessmodelofsand AT nanbowen modifiedpycurvesmethodbasedondegradationstiffnessmodelofsand AT chenyuan modifiedpycurvesmethodbasedondegradationstiffnessmodelofsand AT fupeng modifiedpycurvesmethodbasedondegradationstiffnessmodelofsand |
| _version_ |
1718444947297796096 |