Abstract:

Several transportation modes in tunnels are studied in order to eliminate the influence of the invert construction on the transportation lines in tunnels. The design of multispan buttress railbound invert trestle and the corresponding invert construction technology and the design of singlespan steel beam invert trestle and the corresponding invert construction technology are presented. In addition, key points of invert construction are proposed. The technologies presented in this paper ensure the smooth transportation and construction in tunnels.

Key words: fullbreadth invert construction, multispan buttress trestle, singlespan steel beam trestle, fullhydraulic railbound invert trestle