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Dynamic performance of submerged floating tunnel with different mooring styles subjected to anchor cable failure

Frontiers of Structural and Civil Engineering 2023年第10期17卷 1443-1464页

作者： Zhiwen WU Chuhan ZHANG Liwang MOU Guoxiong MEI Ankit GARG College of Civil Engineering and Architecture Guangxi UniversityNanning 530004China Department of Civil Engineering L.N.Gumilyov Eurasian National UniversityNur-Sultan 010000Kazakhstan Guangdong Engineering Center for Structure Safety and Health Monitoring Shantou UniversityShantou 515063China

Submerged floating tunnels(SFTs)are novel structures for transportation across long-and deep-strait *** to severe wave and current excitation as well as the effects of underwater structures and corrosion,the risk of local anchor cable failure is high,which can result in the progressive failure of the entire *** this study,experimental and numerical investigations are conducted to analyze the dynamic behavior of an SFT with different mooring styles under local cable failure.A custom-designed cable failure device and the birth-and-death element method are used to simulate cable failure(i.e.,progressive failure)via experiments and numerical simulation,respectively.A physical-scale segmental model of an SFT with different mooring styles under anchor cable failure is developed in this study.A segmental and entire-length mathematical model is developed using the ANSYS program to perform the numerical *** results of the segmental numerical and experimental models indicate good *** dynamic response of an SFT with different mooring styles under cable failure is comprehensively investigated by investigating the effects of key parameters(wave period,buoyant weight ratio,and cable failure mechanism).Moreover,the progressive failure of the SFT under cable failure is investigated via a segment model test and a numerical simulation of its entire *** present study can serve as a reference for the safer designs of the SFT mooring style.

关键词： dynamic behaviors submerged floating tunnel cable failure mooring style progressive failure

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