Abstract: In China, no uniform design method is currently available for the usage of the steel fiber-reinforced concrete (SFRC) segment structure in shield tunneling. Accordingly, three kinds of SFRC structure design codes are selected and used herein to calculate a specific working condition. The normal section bearing capacity and the crack width obtained by these codes are compared. A mechanical property test of the SFRC segment is then designed and conducted. First, the calculation results obtained by ACI 544 are found to be conservative, consequently underestimating the effect of steel fibers, whereas those obtained by the CECS 38: 2004 and Model Code 2010 models are much reasonable. From the perspective of the segment bearing capacity, the CECS 38: 2004 and Model Code 2010 models can be used to guide the structural design of segments. Second, the maximum crack widths of the SFRC segment in the German standard DIN10451 and CECS 38:2004 are conservative and cannot reflect the crack width of the segment well. Third, considering the influence of steel fiber on the bearing capacity and maximum crack width of the segment, the segment structure design method in Model Code 2010 is recommended for shield tunneling.

Key words: shield tunnel, segmental lining, steel fiber-reinforced concrete, normal section design method