bridge scour prevention
Download
Skip this Video
Download Presentation
Bridge Scour Prevention

Loading in 2 Seconds...

play fullscreen
1 / 20

Bridge Scour Prevention - PowerPoint PPT Presentation


  • 92 Views
  • Uploaded on

<?xml version="1.0"?><AllQuestions />. <?xml version="1.0"?><AllResponses />.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Bridge Scour Prevention' - bell


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
bridge scour prevention

<?xml version="1.0"?><AllQuestions />

<?xml version="1.0"?><AllResponses />

<?xml version="1.0"?><Settings><answerBulletFormat>Numeric</answerBulletFormat><answerNowAutoInsert>No</answerNowAutoInsert><answerNowStyle>Explosion</answerNowStyle><answerNowText>Answer Now</answerNowText><chartColors>Use PowerPoint Color Scheme</chartColors><chartType>Horizontal</chartType><correctAnswerIndicator>Checkmark</correctAnswerIndicator><countdownAutoInsert>No</countdownAutoInsert><countdownSeconds>10</countdownSeconds><countdownSound>TicToc.wav</countdownSound><countdownStyle>Box</countdownStyle><gridAutoInsert>No</gridAutoInsert><gridFillStyle>Answered</gridFillStyle><gridFillColor>255,255,0</gridFillColor><gridOpacity>50%</gridOpacity><gridTextStyle>Keypad #</gridTextStyle><inputSource>Response Devices</inputSource><multipleResponseDivisor># of Responses</multipleResponseDivisor><participantsLeaderBoard>5</participantsLeaderBoard><percentageDecimalPlaces>0</percentageDecimalPlaces><responseCounterAutoInsert>No</responseCounterAutoInsert><responseCounterStyle>Oval</responseCounterStyle><responseCounterDisplayValue># of Votes Received</responseCounterDisplayValue><insertObjectUsingColor>Red</insertObjectUsingColor><showResults>Yes</showResults><teamColors>Use PowerPoint Color Scheme</teamColors><teamIdentificationType>None</teamIdentificationType><teamScoringType>Voting pads only</teamScoringType><teamScoringDecimalPlaces>1</teamScoringDecimalPlaces><teamIdentificationItem></teamIdentificationItem><teamsLeaderBoard>5</teamsLeaderBoard><teamName1></teamName1><teamName2></teamName2><teamName3></teamName3><teamName4></teamName4><teamName5></teamName5><teamName6></teamName6><teamName7></teamName7><teamName8></teamName8><teamName9></teamName9><teamName10></teamName10><showControlBar>All Slides</showControlBar><defaultCorrectPointValue>0</defaultCorrectPointValue><defaultIncorrectPointValue>0</defaultIncorrectPointValue><chartColor1>187,224,227</chartColor1><chartColor2>51,51,153</chartColor2><chartColor3>0,153,153</chartColor3><chartColor4>153,204,0</chartColor4><chartColor5>128,128,128</chartColor5><chartColor6>0,0,0</chartColor6><chartColor7>0,102,204</chartColor7><chartColor8>204,204,255</chartColor8><chartColor9>255,0,0</chartColor9><chartColor10>255,255,0</chartColor10><teamColor1>187,224,227</teamColor1><teamColor2>51,51,153</teamColor2><teamColor3>0,153,153</teamColor3><teamColor4>153,204,0</teamColor4><teamColor5>128,128,128</teamColor5><teamColor6>0,0,0</teamColor6><teamColor7>0,102,204</teamColor7><teamColor8>204,204,255</teamColor8><teamColor9>255,0,0</teamColor9><teamColor10>255,255,0</teamColor10><displayAnswerImagesDuringVote>Yes</displayAnswerImagesDuringVote><displayAnswerImagesWithResponses>Yes</displayAnswerImagesWithResponses><displayAnswerTextDuringVote>Yes</displayAnswerTextDuringVote><displayAnswerTextWithResponses>Yes</displayAnswerTextWithResponses><questionSlideID></questionSlideID><controlBarState>Expanded</controlBarState><isGridColorKnownColor>True</isGridColorKnownColor><gridColorName>Yellow</gridColorName></Settings>

<?xml version="1.0"?><AllAnswers />

Bridge Scour Prevention

Presentors:

Tom Hardinger – Wisconsin DOT

Eugene Hietpas – Collins Engineers Inc.

This presentation and its contents may not be duplicated or reproduced without the expressed written consent of Collins Engineers, Inc.

slide2

NC Region Various Structures – Structures B-37-0187, B-71-0018, B-49-0090

Background Information

Design Phase

Construction Phase

As-Builts

background information
Background Information
  • Project included 3 bridges over Wisconsin River (Marathon, Portage and Wood Counties in central Wisconsin).
  • Substructure units are conventional seal, footing and pier walls.
  • Major flood events 2008, 2010 and 2011.
  • Post-flood dive inspections revealed major scour issues with streambed and/or substructure undermining.
  • Project initiated in 2011 and built in late 2012.
b 37 187 sth 34 knowlton
B-37-187, STH 34, Knowlton
  • Built 1969.
  • Multi-span steel girder spans.
  • 20-38’ water depth.
  • 8-10’ streambed degradation during 2008 flood exposed seal-to-rock interface. Mitigated piers 2 and 3.
b 49 90 cth hh stevens point
B-49-90, CTH HH, Stevens Point
  • Built 1999.
  • Multi-span pre-stressed girder spans.
  • 8-15’ water depth.
  • Pier 4 Seal undermining at upstream nose.
b 71 18 sth 73 nekoosa
B-71-18, STH 73, Nekoosa
  • Built 1962.
  • Multi-span steel girder spans.
  • 15-22’ water depth.
  • Localized scour at piers 2 thru 6.
design considerations
Design Considerations
  • Permanent vs. Temporary Repairs.
  • Alternatives.
    • Conventional Riprap placement.
    • Articulated grout mats/grout bags and structural grout.
  • Traffic disruptions.
  • Environmental.
  • Project Inspection - Most work underwater.
design challenges
Design Challenges
  • Limited WDOT history/experience (design and construction).
    • HEC 23 guidelines.
    • Input from other states: Montana, Iowa, MN.
    • Input from industry.
  • Environmental.
    • Aquatic bed impacts.
  • Development of Specifications.
project 1009 45 65
Project 1009-45-65
  • Designed by NCR and BOS.
  • Let August 14, 2012.
  • Cost $532,111.
    • Scour Repair Grout: $4,829/CY (6 CY).
    • Grout Bags: $482/CY (402 CY).
    • 4 “ Grout Mats: $837/CY (256 CY).
  • Contractor: JF Brennan Company, La Crosse.
slide12

NC Region Various Structures – Structures B-37-0187, B-71-0018, B-49-0090

  • Construction
    • 3D Imaging
      • Design Phase/Pre-construction
      • As-Builts
the challenge
The Challenge
  • Can You See Me Now?
questions
Questions

Contact:

Eugene Hietpas

[email protected]

Tom Hardinger

[email protected]

ad