Tunnel Design - Initial Support with Steel Liner Plate

Purpose of calculation

• 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).

Assumptions/Limitations and Conventions

• 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)

Calculation Reference

• AASHTO LRFD Bridge Design Specifications (2010)
• CALTRANS Bridge Design Specifications (2000)
• AREMA Manual for Railway Engineering
• AISC Manual of Steel Construction, 13th Edition
• Contech Tunnel Liner Plate Design Guide

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Code

Tunnel Design - Initial Support with Steel Liner Plate
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