Numerical analysis of interaction between seabed and mono-pile subjected to dynamic wave loadings considering the pile rocking effect
Numerical analysis of interaction between seabed and mono-pile subjected to dynamic wave loadings considering the pile rocking effect
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考虑桩摇摆效应的动波荷载作用下海底与单桩相互作用的数值分析
DOI：
10.1016/j.oceaneng.2018.02.041
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发表时间：
2018-05
影响因子：
5
通讯作者：
Wang Jianhua
中科院分区：
文献类型：
--
作者：
Zhang Yizhou;Liao Chencong;Chen Jinjian;Tong Dagui;Wang Jianhua
桩体摇摆是单桩基础在风和波浪引起的循环荷载以及海上风力涡轮机等上部结构的作用下产生的运动。摇摆效应进一步使单桩与海床之间的相互作用复杂化，并导致海洋结构物的不稳定性。本文采用一个考虑波浪荷载、海床和单桩共同作用的三维整体数值模型，研究了考虑桩体摇摆效应的波浪-结构-海床相互作用。通过室内试验数据和分析结果验证了模型的正确性。此外，与无摇摆单桩进行了详细的比较，以检查桩摇摆对土壤反应的影响更清楚。最后，研究了瞬时液化深度，并对孔压响应进行了参数研究。结果表明：桩身晃动会使泥线附近的土压力局部增大，并使孔压沿深度方向的下降速率减慢，导致上部土层的孔压相对较高。此外，桩的摇摆效应对液化分布有显著影响，使单桩附近的液化带扩大。
Pile rocking is the motion of a mono-pile foundation as a result of cyclic loads caused by wind and wave, and the effect of upper structures such as offshore wind turbines. The rocking effect further complicates the interaction between a mono-pile and the seabed and results in instability of offshore structures. In this research, a three-dimensional integrated numerical model, combining the effect of wave loads with the seabed and mono-pile, is adopted to investigate wave-structure-seabed interaction (WSSI) considering the pile rocking effect. The present model is validated by available laboratory experiment data and analytical results. In addition, a detailed comparison with a non-rocking single pile is conducted to examine the effect of pile rocking on soil response more clearly. Finally, the momentary liquefaction depth is investigated and a parametric study on pore pressure response has been carried out. Results indicate that local pressure enlargement occurs near the mudline and the rate of pore pressure decrease in depth is slowed down due to pile rocking, leading to a relatively high pore pressure in the upper soil range. Furthermore, the pile rocking effect has a significant influence on the liquefaction distribution and enlarges the liquefaction zone in the vicinity of mono-pile foundation.
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DOI：
--
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Nilas Mandrup Hansen
通讯作者：
Nilas Mandrup Hansen
影响因子：
5
作者：
D. Jeng;Deaho Fred Cha
通讯作者：
D. Jeng;Deaho Fred Cha
影响因子：
2.4
作者：
W. Jian
通讯作者：
W. Jian
DOI：
10.1002/nag.250
发表时间：
2002-12
影响因子：
4
作者：
Z. Yang;B. Jeremić
通讯作者：
Z. Yang;B. Jeremić
考虑土/岩体和竖井非线性行为的侧向荷载嵌岩竖井分析
DOI：
10.1061/(asce)gt.1943-5606.0001610
发表时间：
2017-03
影响因子：
3.9
作者：
Chen Jin-Jian;Zeng Fan-Yun;Wang Jian-Hua;Zhang Lianyang
通讯作者：
Zhang Lianyang