水中悬浮隧道受撞击作用的数值分析  

Numerical analysis of impact of submerged floating tunnel

作　　者：陈灿鹏 孙文哲 王琰 谭慧明[2] CHEN Can-peng;SUN Wen-zhe;WANG Yan;TAN Hui-ming(CCCC-FHDI Engineering Co.Ltd.,Guangzhou 510230,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]中交第四航务工程勘察设计院有限公司,广州510230 [2]河海大学港口海岸与近海工程学院,南京210098

出　　处：《水道港口》2020年第2期191-196,共6页Journal of Waterway and Harbor

基　　金：国家自然科学基金重点项目(51639002)。

摘　　要：针对水中悬浮隧道在偶然状况下受到的潜艇撞击问题,文章采用流固耦合方法,建立了撞击作用下浮筒式悬浮隧道的有限元动态模型,分别撞击跨中、隧道四分之一跨、浮筒,分析隧道变形、撞击力、连接钢管拉杆力、隧道端部约束力、隧道动能情况。结果表明:撞击作用下,隧道整体变形明显,结构内力大。不同撞击位置处,悬浮隧道在水下的结构变形和受力行为区别明显。对此,有必要考虑撞击位置进行悬浮隧道的抗撞击设计。In response to the submarine impact problem of submerged floating tunnel(SFT),a finite element dynamic model was established by using fluid-solid coupling method.The impact of tunnel deformation,impact force,connecting pipe force,tunnel constraint force and tunnel kinetic energy were analyzed by hitting the mid-span,one-quarter span of the tunnel and float respectively.The results show that the overall deformation of the tunnel is obvious,and the internal force of the structure is large under the impact.Under different impact conditions,the structural deformation and force behavior of the SFT are distinct.Therefore,it is necessary to consider the impact location for the anti-impact design of SFT.

关 键 词：水中悬浮隧道 潜艇撞击 流固耦合 有限元分析 

分 类 号：U459.5[建筑科学—桥梁与隧道工程]