小净距隧道近接施工力学影响研究

Study on Mechanical Influence of Close-up Construction of Small Clear Distance Tunnel

随着城市经济和交通的日益增长,小净距隧道逐步得到了广泛的应用。为了保证小净距隧道在近接施工条件下的结构受力安全,确保施工过程的隧道结构变形和受力的安全性,小净距隧道近接施工力学影响分析则尤为重要。以数值模拟为分析手段,对不同洞净距下两圆形隧道的近接施工进行模拟,详细研究了隧道净距对隧道近接施工的影响程度。研究成果可用以指导小净距隧道近接施工的设计,同时也为类似工程的建设提供参考依据。

With the increasing economic and traffic of the city,the small clearance tunnel has gradually been widely used.In order to ensure the structural safety of the small clearance tunnel under the close construction conditions,and to ensure the deformation of the tunnel structure and the safety of the force during the construction process,the analysis of the mechanical impact of the construction of the small clearance tunnel is particularly important.In this paper,numerical simulation is used as the analysis method to simulate the proximity construction of two circular tunnels under different clearances.The influence degree of tunnel clearance on the tunnel construction is studied in detail.The research results can be used to guide the design of the near-construction of small-space tunnels,and also provide reference for the construction of similar projects.