天津海河大型沉管隧道抗震稳定分析方法

On Seismic Stability Analysis Method to Tianjin Hai River Large-type Immersed Tunnel

天津地处华北地震区的华北平原地震带上,中央大道海河隧道是抗震重点工程。针对海河隧道的工程地质概况,上海交通大学提出了用大型有限元三维仿真模拟和经典的等效质点-弹簧模型2种方法进行抗震分析,并首次提出了"SSUM(Sophisticated and Simple Unified Method)"抗震分析方法。这对今后类似工程有重要的借鉴作用。

Tianjin is located in the seismic belt of North China Plain in North China seismic zone,and Central Ave.Hai River Tunnel is the key seismic project.Aiming at the engineering geology survey of Hai River Tunnel,the two methods are proposed and analyzed by Shanghai Jiaotong University,large-type limited element 3D analogue simulation and classical equivalent particle-spring model,and meanwhile,Sophisticated & Simple Unified Method(SSUM),this seismic analysis method is put forward firstly,which can provide importance references for similar projects in the future.