TEMBLOR VALLEY VIADUCT

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TEMBLOR VALLEY VIADUCT

• SPECIAL CONSIDERATIONS AND DYNAMIC ANALYSIS OF
  THE BRIDGE

By Marco T. Bernal Onur Dal Joel Del Rio Oscar
Martinez-Mexicano
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• DESIGN SPECIFICATIONS
• AASHTO LRFD
• ACI

• DESIGN LEVEL
• Earthquake event with an occurrence period of 500
  yr
• Live Loads and Dead loads for Bridge Deck

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Seismic Design

• Zone 4 ( Hayward fault system in CA)
• Structural response at bearing soil (S1.0)
• No significant dependence on inelastic response
• (Response modification factor 1.0)
• Design Response Spectra
• Effective Peak Ground Acceleration, A0.32 g

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Location of Expansion Joints and Piers
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Response Spectrum Dynamic Analysis

• It was done to obtain

• Periods
• Mode shapes
• Displacements
• Inertial forces
• Internal forces (including P-D effects)

Results are the combination of all modes
(multimode analysis, AASHTO LRFD).
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Transverse Pier Analysis

• Analysis done for the longest and the shortest
  piers.

Elevation View
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Longitudinal Pier Analysis
Elevation View
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Bridge Dynamic Analysis
Plan View
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Summary from Dynamic Analysis
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Sections Selected
Box Girder
4.0m depth with web thickness from 0.7m at the
joint to 0.4m at mid span.
Pier