APPLICATION RESEARCH ON THE JACKING PROCESS OF STEEL ARCH FRAME IN HIGHWAY TUNNELS
In recent years,the use of new Austrian Method has become an important technology in the construction of highway and railway projects.The complex engineering problems caused by the high air face of the tunnel con-struction should be solved.Erecting the initial steel arch safely and efficiently,as well as conceiving,designing,and processing the steel arch jacking device suitable for highway tunnel construction is worth exploring and practicing.A steel arch jacking process method is summarized through the tunnel engineering practice in Mengprovince,which re-duces the number of palm face erection personnel,saves construction time,and ensures the installation quality of steel arch,bringing all-round quality improvement to the construction of tunnel engineering.It achieves safe and ef-ficient tunnel initial support,which provides certain reference for similar tunnel construction.
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