Comparison of the design and construction scheme of the tunnel under the railwayThis paper introduces the design scheme of the tunnel under the Pukou Railway Station of Hengjiang Avenue, which involves the plane design, longitudinal section design and cross section of the tunnel

Comparison of the design and construction scheme of the tunnel under the railway

This paper introduces the design scheme of the tunnel under Hengjiang Avenue passing through Pukou Railway Station, which involves the plane design, longitudinal section design and cross-section design of the tunnel. Among the two schemes, scheme 1 retains the hump line as the pull-out line, which requires temporary suspension and construction of pile plate structure, ground connecting wall, etc., which is difficult to construct; Scheme 2 is to relocate and reconstruct the line, and excavate the main structure of the tunnel in layers, which is relatively difficult. For the first option, special attention needs to be paid to safety issues during construction, such as protecting the safety of railways and lines.