水下悬浮隧道静动力响应分析与减振控制  

Static-dynamic response analysis and vibration control for submerged floating tunnel

作　　者：陈健云 谢佳明 徐强 任冰 CHEN Jian-yun;XIE Jia-ming;XU Qiang;REN Bing(Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《大连海事大学学报》2021年第4期83-92,共10页Journal of Dalian Maritime University

基　　金：国家自然科学基金重点项目(52031002)。

摘　　要：为研究新型水运交通结构——水下悬浮隧道的静动力响应特性以及减振控制,参照前人分析计算时的参数取值,基于实体单元建模的有限元数值分析,得到静力与地震工况下结构位移与应力峰值出现的位置;根据数值分析的响应结果,研究了悬浮隧道在地震工况下的减振控制方案,并开展不同参数对减振效果的参数敏感性分析.结果表明,静动力工况下的两端固支悬浮隧道的位移峰值均出现在跨中,而应力峰值集中在端部,减振方案对于位移峰值以及应力峰值均具有较好的削弱效果;阻尼器的布置数量与屈服荷载取值是影响悬浮隧道峰值响应减振效果的主要因素,这对于悬浮隧道工程的减振控制设计具有一定的参考价值.In order to study the response characteristics and the vibration control of submerged floating tunnel(SFT)structure,according to the parameter value in previous analysis and calculation,the finite element numerical analysis based on solid element modeling was carried out to obtain the positions of the peak displacement and stress of SFT structure under static and seismic conditions respectively.After that,based on the response results of numerical analysis,the design scheme of vibration control for SFT structure under seismic action was studied,and the parameter sensitivity analysis for vibration reduction effect of SFT was carried out.The results show that the peak displacement of SFT appears in the middle of the span and the peak stress is concentrated at the supporting end under static and dynamic conditions.The vibration control scheme has a good weakening effect on the peak displacement and the peak stress of SFT.The number of dampers and the yield loads are the main factors affecting the vibration reduction effect of SFT dynamic response peak value,which has some reference value for the design and research of vibration control of submerged floating tunnel engineering.

关 键 词：水运交通 水下悬浮隧道(SFT) 响应分析 减振控制 参数敏感性分析 

分 类 号：TV36[水利工程—水工结构工程]