Research on the Application of Pipe Shed Method in the Failure Reinforcement of Pipe Jacking Inlet and Outlet Holes Under Complex Environments
With the rapid development of urban construction in China,pipe jacking technology has been increasingly applied in the development of underground spaces with busy ground traffic and complex municipal pipelines,and has gradually become a research hotspot.The entry and exit of the tunnel is an important part of pipe jacking con-struction.If the entry and exit of the tunnel fail,it will cause ground settlement or collapse above the entrance,en-dangering the safety of surrounding buildings and municipal pipelines.Usually,measures such as high-pressure jet grouting piles,cement mixing piles,plain concrete walls,and freezing methods are used to reinforce the entrance and exit of the tunnel.However,incidents of ineffective reinforcement of the tunnel entrance still often occur due to various reasons.Therefore,based on engineering examples,the process of receive the pipe jacking machine by pipe shed support technology after the failure reinforcement of the opening is discussed in this paper.The feasibility is verified by numerical simulation analysis and on-site measurement data.The results indicate that the application of the pipe shed method in the example project has achieved good results,providing a new approach for similar pro-jects.
pipe jacking technologypipe shed methodentry and exit the tunnelthe opening reinforcement
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