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

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

Single Ring Models

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

Coupled Ring Models

Loads

• External

• Internal

• Imposed

• Tolerance

Loads: External

• Ground

• Hydrostatic

• Seismic

• Surcharge

Loads: ExternalGround

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 / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal / Radial Joints

Longitudinal Behavior

Longitudinal Behavior

Longitudinal Behavior

Longitudinal Behavior