天津海河隧道岸壁保护有限元分析

Finite Element Analysis on Bank Wall Protection of Tianjin Haihe Tunnel

针对天津中央大道海河隧道工程的岸壁保护结构,该文在三维非线性弹性有限元分析方法基础上,在Abaqus平台上实现了Duncan-Chang本构模型及基坑开挖反应分析方法。通过模拟干坞的开挖、暗埋段的开挖和河道的开挖三个过程,在三维非线性弹性有限元分析的基础上,对岸壁保护结构的应力和位移得出了可靠的计算结果。计算表明,岸壁保护结构的稳定性是安全可靠的。

Aiming at the bank wall protective structure of Tianjin Central Avenue Haihe Tunnel Project,the article introduces the realization of Duncan-Chang constitutive mode at Abaqus platform and the reaction analysis method of foundation pit excavation on the basis of 3D nonlinear elastic finite element analysis method.According to the simulation of three processes of dry dock excavation,buried section excavation and river excavation,and on the basis of 3D nonlinear elastic finite element analysis,the article introduces the reliable computation result of the stress and displacement of bank wall protective structure.The computation shows that the stability of bank wall protective structure is safe and reliable.