REINFORCEMENT CONSTRUCTION TECHNOLOGY FOR INVERTED ARCH IN EXISTING EXPRESSWAY TUNNELS
The invert disease of operating highway tunnels seriously affects the overall stability and long-term opera-tional safety of the tunnel.At present,some research focus on the formation mechanism and treatment methods of arch diseases both domestically and internationally,but there is a lack of in-depth exploration of arch defects.Tak-ing the Qinzhou Tunnel of Tianding Expressway as the case,an evaluation standard for inverted arch defects in oper-ating highway tunnels is proposed based on domestic standards.According to the inspection results of inverted arch defects,the causes are analyzed,and an inverted arch reinforcement is proposed accordingly,which has a good ef-fect,providing the reference experience for optimizing design and similar engineering disease remediation.
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