advances in segmental and final liner designs bob frew ... · advances in segmental and final liner...

Advances in Segmental and Final Liner Designs

Bob Frew

Vice President AECOM North American Tunnel Practice

Segmental Lining

ITA TUNNEL DESIGN GUIDELINES

Design a Brief History• Trial & Error• Terzaghi (1906)• Peck• Morgan• Muir-Wood

• Curtis• Duddeck & Erdmann• Finite Element / Finite Difference

Design a Brief History

Single Ring Models

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Tunnel Lining Design3D FE Analysis (LUSAS)

• Ring roll & joint arrangement

• Derailment / Impact Loading

• Explosion Loads (100KN/m2) applied to internal lining only

• Sunken Vessel Load (100KN/m2)

• Flooding (22ft (6.7m) above top of river level)

Coupled Ring Models

Loads

• External

• Internal

• Imposed

• Tolerance

Loads: External

• Ground

• Hydrostatic

• Seismic

• Surcharge

Loads: ExternalGround

Loads: Internal• Fluid Pressure

• Wall Mounted Equipment/Facilities

• Vehicle Loads• Service• Accident

• Fire

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Loads: Internal Fire

Loads: Imposed• Handling

• Stacking

• Transporting

• Erection• Handling• Tolerance

Loads: ImposedTBM

• Thrust

• Back Up

• Grouting

Loads: Imposed

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Loads: Imposed

Loads: Imposed

TBM

• Thrust

• Back Up

• Grouting

Longitudinal / Radial Joints

Longitudinal Behavior

advances in segmental and final liner designs bob frew ... · advances in segmental and final liner...

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