IMECH-IR  > 流固耦合系统力学重点实验室
PORO-ELASTOPLASTIC MODELLING OF UPLIFT RESISTANCE OF SHALLOWLY-BURIED PIPELINES
Qi WG(漆文刚); Shi YM; Gao FP(高福平); Qi, WG (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China.
会议录名称PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 5B
2017
会议名称36th ASME International Conference on Ocean, Offshore and Arctic Engineering
会议日期JUN 25-30, 2017
会议地点Trondheim, NORWAY
摘要

During operational cycles of heating and cooling of submarine pipelines, variations of temperature and internal pressure may induce excessive axial compressive force along the pipeline and lead to global buckling of the pipeline. Reliable design against upheaval buckling of a buried pipeline requires the uplift response to be reasonably predicted. Under wave loading, the effective stress of soil could be reduced significantly in the seabed under wave troughs. To investigate the effects of wave-induced pore-pressure on the soil resistance to an uplifted buried pipeline, a poro-elastoplastic model is proposed, which is capable of simulating the wave-induced pore-pressure response in a porous seabed and the development of plastic zones while uplifting a shallowly-buried pipeline. The uplift force on the buried pipeline under wave troughs can be generated by the pore-pressure nonuniformly distributed along the pipe periphery. Numerical results show that the value of uplift force generally increases linearly with the wave induced mudline pressure under troughs. Parametric study indicates that the peak soil resistance (under wave troughs) decreases with increasing wave height and wave period, respectively. The ratio of peak soil resistance under wave action to that without waves is mainly dependent on the normalized wave-induced mudline pressure, but influenced slightly by the internal friction angle of soil.

关键词Sand Wave Pipes
WOS记录号WOS:000417225000003
资助信息This work was supported by the National Natural Science Foundation of China (Grant Nos. 11232012, 11372319, 11602273) and the Strategic Priority Research Program (Type-B) of CAS (Grant No. XDB22030000).
ISBN号978-0-7918-5770-0
收录类别CPCI-S ; EI
语种英语
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文献类型会议论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72170
专题流固耦合系统力学重点实验室
通讯作者Qi, WG (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China.
作者单位1.[Qi, Wen-gang
2.Shi, Yu-min
3.Gao, Fu-ping] Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China
4.[Qi, Wen-gang
5.Shi, Yu-min
6.Gao, Fu-ping] Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
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GB/T 7714
Qi WG,Shi YM,Gao FP,et al. PORO-ELASTOPLASTIC MODELLING OF UPLIFT RESISTANCE OF SHALLOWLY-BURIED PIPELINES[C]. NEW YORK:AMER SOC MECHANICAL ENGINEERS,2017.
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