Abstract
The artificial freezing method has been widely used in the construction of subway tunnel connected aisle. By monitoring and analyzing the displacement of the tunnel during the construction of the freezing connected aisle, the uplift and settlement values of the tunnels on both sides are obtained. The results show that in the process of freezing and excavation, the tunnels on both sides of the connected aisle produce upward displacement; in the process of thawing after construction, the tunnel near the connected aisle produces settlement. Within six months after completion of construction, the settlement of the tunnel is about 4 mm more than that of the tunnel unaffected by the construction of the connected aisle. The engineering measures to reduce the frost heave and thaw settlement of the connected aisle are put forward, which provides a reference for similar projects.
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