1 / 71

Hurricane Damage to Transportation Structures

2007 FDOT Construction Conference. Topics. Wind SpeedsDamage

paul
Download Presentation

Hurricane Damage to Transportation Structures

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. 2007 FDOT Construction Conference Hurricane Damage to Transportation Structures Lessons Learned ? Design Changes Andre Pavlov, Assistant State Structures Design Engineer

    2. 2007 FDOT Construction Conference Topics Wind Speeds Damage – Corrective Action Ground Signs Overhead Signs Signal Structures Lighting Structures Bridge Scour Wave Forces 4th Edition (2001) AASHTO Specification for Structural Supports for Highway Signs, Luminaires, and Traffic Signals

    3. 2007 FDOT Construction Conference

    4. 2007 FDOT Construction Conference

    5. 2007 FDOT Construction Conference Ivan Sustained Winds - 80 mph

    6. 2007 FDOT Construction Conference Jeanne Sustained Winds - 85 mph

    7. 2007 FDOT Construction Conference

    8. 2007 FDOT Construction Conference Actual Winds vs. Design Winds*

    9. 2007 FDOT Construction Conference Area in Sq. Miles of Sustained Winds

    10. 2007 FDOT Construction Conference Damage – Corrective Action Ground Signs

    11. 2007 FDOT Construction Conference Exit 158

    12. 2007 FDOT Construction Conference

    13. 2007 FDOT Construction Conference 1990 2’ – 9” 4’ – 0”

    14. 2007 FDOT Construction Conference

    15. 2007 FDOT Construction Conference

    16. 2007 FDOT Construction Conference

    17. 2007 FDOT Construction Conference

    18. 2007 FDOT Construction Conference Damage – Corrective Action Overhead Signs

    19. 2007 FDOT Construction Conference

    20. 2007 FDOT Construction Conference

    21. 2007 FDOT Construction Conference

    22. 2007 FDOT Construction Conference The capacity of the repaired test specimen greatly exceeded that of the original test and resulted in yielding of all of the anchor bolts.

    23. 2007 FDOT Construction Conference

    24. 2007 FDOT Construction Conference

    25. 2007 FDOT Construction Conference

    26. 2007 FDOT Construction Conference

    27. 2007 FDOT Construction Conference

    28. 2007 FDOT Construction Conference

    29. 2007 FDOT Construction Conference Damage – Corrective Action Signal Structures

    30. 2007 FDOT Construction Conference Traffic Signal Inventory

    31. 2007 FDOT Construction Conference

    32. 2007 FDOT Construction Conference

    33. 2007 FDOT Construction Conference Component Failures: Aluminum Hangers

    34. 2007 FDOT Construction Conference Component Failures: Aluminum Disconnect Boxes

    35. 2007 FDOT Construction Conference Interim Design Standard 17727

    36. 2007 FDOT Construction Conference

    37. 2007 FDOT Construction Conference

    38. 2007 FDOT Construction Conference Mast Arm Failures

    39. 2007 FDOT Construction Conference

    40. 2007 FDOT Construction Conference Damage – Corrective Action Lighting Structures

    41. 2007 FDOT Construction Conference 19 Failures - Charley

    42. 2007 FDOT Construction Conference

    43. 2007 FDOT Construction Conference Damage – Corrective Action Bridge Scour

    44. 2007 FDOT Construction Conference

    45. 2007 FDOT Construction Conference

    46. 2007 FDOT Construction Conference

    47. 2007 FDOT Construction Conference

    48. 2007 FDOT Construction Conference

    49. 2007 FDOT Construction Conference

    50. 2007 FDOT Construction Conference

    51. 2007 FDOT Construction Conference Bridge Scour: Lessons Learned Use Coastal Engineers on Design Teams Hydraulic Analysis Scour-Mitigating Designs New Details Abutment End Treatments Structures Manual – Volume 3 Examples

    52. 2007 FDOT Construction Conference Damage – Corrective Action Wave Forces

    53. 2007 FDOT Construction Conference Ivan

    54. 2007 FDOT Construction Conference Ivan

    55. 2007 FDOT Construction Conference I-10 over Escambia Bay

    56. 2007 FDOT Construction Conference Wave Modeling Results

    57. 2007 FDOT Construction Conference Lessons Learned

    58. 2007 FDOT Construction Conference Ongoing Research FDOT University of Florida, Dr. Max Sheppard, Quantify Wave / Buoyancy Forces First iteration force model complete FHWA-AASHTO Wave Task Force Few Historical Wave Force Impacts LRFD Load Combinations FHWA-AASHTO Wave Task Force. This Task Force was approved by the SCOH at its spring 2006 meeting. The task force will lead the development and execution of a roadmap that includes a set of research studies and technology transfer activities to fully achieve a rational approach that addresses wave force and storm surge vulnerabilities in existing and new structures, and to develop design specifications for coastal bridges vulnerable to scour and hydrodynamic forces. The task force has already hit the ground running and is overseeing a contract to create guide specifications and retrofit manual for bridges subject to coastal storms. It is anticipated that a final draft document will be produced in 2007, and will be balloted in 2008. FHWA-AASHTO Wave Task Force. This Task Force was approved by the SCOH at its spring 2006 meeting. The task force will lead the development and execution of a roadmap that includes a set of research studies and technology transfer activities to fully achieve a rational approach that addresses wave force and storm surge vulnerabilities in existing and new structures, and to develop design specifications for coastal bridges vulnerable to scour and hydrodynamic forces. The task force has already hit the ground running and is overseeing a contract to create guide specifications and retrofit manual for bridges subject to coastal storms. It is anticipated that a final draft document will be produced in 2007, and will be balloted in 2008.

    59. 2007 FDOT Construction Conference FDOT has adopted the 4th Edition (2001) AASHTO Specification for Structural Supports for Highway Signs, Luminaires, and Traffic Signals LTS-4

    60. 2007 FDOT Construction Conference Wind Speed Maps

    61. 2007 FDOT Construction Conference Adoption of LTS-4 Reworked Design Standards, programs, specifications, Basis of Estimates, & Qualified Products List for: Sign Structures Lighting Structures Signal Structures

    62. 2007 FDOT Construction Conference

    63. 2007 FDOT Construction Conference Misc. Structures Wind Speeds (50 yr.)

    64. 2007 FDOT Construction Conference Signals: Lessons Learned Signal head hardware Better acceptance criteria for hangers and disconnect boxes Mast Arms Use FDOT Standards Reconsider Mast Arm usage policy Review failures for Latent Defects

    65. 2007 FDOT Construction Conference Multi-Post Ground Signs

    66. 2007 FDOT Construction Conference Signs: Lessons Learned Ground Mounted More Diligent CEI (foundations) Update Slip-Base Connection Use a fracture (instead of slip) hinge plate Sign Survivability Policy Cantilevers Truss Improve Drilled Shaft Quality Improve Torsion Resistance Limit Cantilever Lengths Latent Defects Test Florida’s new statute

    67. 2007 FDOT Construction Conference High Mast Lighting

    68. 2007 FDOT Construction Conference Lighting: Lessons Learned High Mast Light Poles Develop a New Standard Investigate wind/structure interaction Roadway Lights Investigate Decorative Lights Investigate Standard Detail Connections Latent Defects Within 24 months of discovery (date, location, contractor, CEI)

    69. 2007 FDOT Construction Conference Florida Expenditures and Funding Total – $1.23 Billion for Transportation Funding from DER-17M, FAA-2M, FEMA-100M, FHWA-1,111M Charley - $215 M Frances - $130 M Ivan - $570 M Jeanne- $325 M

    70. 2007 FDOT Construction Conference Follow-up and by whom? Structures Develop a New Standard Update Companion Computer Program Investigating Standard Details and connections Recommendations by Structures TAG Adopting new AASHTO Code with new Map will increase wind pressures in most coastal counties

    71. 2007 FDOT Construction Conference Structure Implementation Effort by July 2006 and Dec. 2006 Lettings

    72. 2007 FDOT Construction Conference Follow-up and by whom? Traffic Operation Signal hardware on APL 10 mile policy on Mast arms Essential Ground signs and the 10 year interval designation Latent Defects by SCO Foundations and hardware failures reports and notified within 24 months of discovery (date, location, contractor, CEI)

More Related