AASHTO Steel Tunnel Liner Plate spreadsheet

Smooth-back tunnel liner plate in soft ground

 

Purpose:

To design an initial liner for a tunnel using steel liner plate.

Hoop thrust capacity of the liner is checked for a specified overburden pressure, hydrostatic pressure, and live load pressure, which consists of either AASHTO H-20 Truck Loading or Cooper E-80 Train Loading (Per AREMA).

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Assumptions/Limitations:

• Surrounding ground consists of granular or cohesive soil (Not rock)
• Tunnel support is 2-flange or 4-flange, smooth-back liner plate.
• Liner plate joints (flanges) are non-compact (not slender)