Capacity Assessment of the Titus Tunnel Bridge Using Analytical and Numerical Techniques
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A great number of masonry arch bridges are still in service in Europe, Middle East and other parts of the world. Assessing the capacity of these historical structures is an important problem both for safety and preservation purposes.

This paper addresses the assessment of the Titus Tunnel Bridge: a single-span, Roman stone arch bridge (A.D. 70) located in Antakya (Turkey), using analytical and numerical techniques. Understanding the bridge behavior is important mainly due to two reasons: (1) the bridge is located in an active seismic zone and has survived several major earthquakes, and (2) being a single span semi-circular stone arch, the bridge exemplifies the main construction blocks of several masonry bridges around the world. First, the analytical techniques: Heyman's geometrical factor of safety and the mechanism method are used to assess the capacity of the bridge under simple loading conditions and to validate the finite element models. Then, discrete finite element modeling with explicit time integration is employed to investigate the arch behavior under both gravity and earthquake loading conditions. It is observed that the Titus Tunnel Bridge has a significant margin of safety, which also explains the approximately 2000 years lifetime of the structure.

Publication Summary

  • Geosyntec Authors: Ravi Mullapudi
  • All Authors: Bora Gencturk , Sami And Kilic, Mustafa Erdik, Ravi Mullapudi
  • Title: Capacity Assessment of the Titus Tunnel Bridge Using Analytical and Numerical Techniques
  • Event or Publication: Journal of Performance of Constructed Facilities
  • Practice Areas: Analysis and Simulation, Design and Assessment
  • Date: 2012