沉管隧道结构抗震性能试验研究

Experimental study on seismic performance of immersed tube tunnel structure

结构物的抗震性能是判断其安全性和稳定性的重要指标。大连湾海底隧道工程中,沉管结构的应用环境较为复杂,其在地震灾害下安全性的分析研究对工程设计、施工和运营具有较大实际意义。文章分别通过数值模拟方法和荷载试验对沉管隧道结构的抗震性能开展试验分析。试验结果表明,现有工程设计方案具有很好的抗震性能,在复杂受力情况下能够保证隧道结构的稳定性和安全性。

Seismic performance of a structure is an important indicator of its safety and stability. The environment where the immersed tube structure in the Dalian Bay Subsea Tunnel project is built is complex, and the analysis of the safety of the immersed tube structure under the action of seismic hazards is of great practical significance for the design, construction and operation of the project. In this paper, the seismic performance of the immersed tube tunnel structure is analyzed by numerical simulation and load tests respectively. The results show that the existing engineering design has good seismic performance and can ensure the stability and safety of the tunnel structure under complex stresses.