哈尔滨工程大学学报2025，Vol.46Issue(7)：1268-1278,11.DOI:10.11990/jheu.202308007
悬浮隧道截面形状与系泊方式对抗冲击能力影响
Influence of the cross-sectional shape and anchor cable arrangement of SFT on its impact resistance
摘要
Abstract
When a submerged floating tunnel in water is suddenly impacted,the changes in pipe strength,system reliability,and structural dynamic response are very complex.To address the uncertainty of whether a suspended tunnel can continue to operate safely after being impacted,the application of the finite element method to simulate the damage and motion response of the suspended tunnel is very effective.This paper uses ABAQUS to conduct nu-merical analyses of the response of suspended tunnels under impact,constructs a finite element model,determines the model materials and element types of each part,proposes a treatment method for pipe joints,and deeply ex-plores the influence mechanism of different suspended tunnel section shapes and anchor cable arrangements on structural disasters.The research results indicate that the displacement and damage of the quadrilateral cross-sec-tion tunnel tube after impact are minimal,and it is the best form to resist impact.The arrangement of anchor cables does not affect the impact stress,strain,and damage of the suspended tunnel but only affects the motion response of the suspended tunnel.The two vertical and two inclined mooring methods can significantly limit the impact motion amplitude of suspended tunnels.关键词
水中悬浮隧道/撞击载荷/锚索布置方式/截面形状/数值模拟/动力响应/结构损伤/应力分析Key words
submerged floating tunnel(SFT)/impact load/anchor cable arrangement/cross-sectional shape/nu-merical simulation/power response/structural damage/stress analysis分类
通用工业技术引用本文复制引用
徐万海,沙沐,李明鎏,李航..悬浮隧道截面形状与系泊方式对抗冲击能力影响[J].哈尔滨工程大学学报,2025,46(7):1268-1278,11.基金项目
国家自然科学基金项目(U2106223,51979163). （U2106223,51979163）
