BRIDGE MAINTENANCE PROJECTS

Transcription

1 BRIDGE MAINTENANCE PROJECTS

2 Bridge Replacements PILE DRIVING ANALYZER (PDA) Prevents steel piles from being spliced Saves on material costs and labor costs

3 Bridge Replacements Southern University Pipe Failure

4 Bridge Replacements Measure once cut twice Measure twice cut once

5 Bridge Replacements Vibratory Hammer

6 Bridge Replacements

7 Bridge Replacements Getting the bridge in the right place is all about the template

8 Bridge Replacements Piles and caps

9 Bridge Replacements Spans/panels and tie rods

10 Bridge Replacements Almost finished

11 Bridge Replacements Seal cracks, back fill roadway Finished!

12 LA 506 BRIDGE REPLACEMENT

13 LA 506 BRIDGE REPLACEMENT

14 LA 506 BRIDGE REPLACEMENT

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16 Timber Bridge Repairs Old deteriorated deck

17 Timber Bridge Repairs New timber deck

18 Timber Bridge Repairs Stringer replacement

19 US 90 OVER BAYOU RAMOS Type III girders developed shear cracks Two theories were suspected as causes: 1. Bad rigidity of the continuity diaphragms 2. Bad concrete was used to construct the girders

20 Drilling the Core Samples First Step: Locating a drill that can obtain the size sample needed for testing. Second Step: Designing and building an apparatus that will enable a drill used vertically to drill horizontally Third Step: Locating rebar in the girders and bridge deck. Accomplished by referencing As- Builts and Non-Destructive Testing using a Multi-Scanner. Fourth Step: Hooking the drill onto the girder Fifth Step: Drill Baby Drill Results: A Beautiful 7 inch Core Sample End Note: Testing of Core Samples showed the that the concrete was good.

21 PREPPING

22 DRILL BABY DRILL

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24 EMERGENCY REPAIRS FENDER REPAIRS Marine Collision with the vertical lift bridge in Perry, LA damaged the fender system Statewide Water Crew removed the damaged portion and replaced it with new timber piles and new timber whalers Obstacles: Marine Traffic

25 NO GOOD

26 BRAND NEW

27 EMERGENCY REPAIRS FENDER REPAIRS Marine collision with the movable swing span bridge in Adeline, LA damaged the fender system Statewide Water Crew repaired the fender system. Routine repairs for this crew.

28 EMERGENCY REPAIRS RETAINING WALL The embankment under the bridge in Charenton, LA was washing away The statewide bridge crew constructed a retaining wall using steel H piles and timber planks The wingwalls were constructed by driving sheet pile

29 EMERGENCY REPAIRS

30 HELPING OUT LTRC The statewide bridge crew was asked to fabricate a testing reaction frame for LTRC The frame was designed by the one and only Jay Carnell, P.E. The frame is used for load testing

31 AFTER INSTALLATION

32 PORTAL REPAIRS BOURG COLLISION DAMAGE

33 REMOVING DAMAGED PORTAL

34 INSTALLATION

35 BEFORE AND AFTER

36 EMERGENCY REPAIRS Portal Repairs Vertical lift span bridge in Perry, LA was hit, damaging a portal. Jay Carnell, P.E., designed a replacement. This guy is an engineering deity. Statewide Bridge Crew installed the portal, easy as pie. They re pros at this, those portals get hit all the time.

37 NORTH PORTAL

38 SOUTH PORTAL

39 EMERGENCY REPAIRS HELPER BENT SALT BAYOU

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41 HELPER BENT SALT BAYOU

42 HELPER BENT SALT BAYOU

43 HELPER BENT SALT BAYOU

44 HELPER BENT SALT BAYOU

45 HELPER BENT SALT BAYOU

46 EMERGENCY REPAIRS Palmetto Bridge needed to be strengthened to raise the load posting 9 steel helper bents were installed in each span at mid-span Obstacles: 7 of the 9 bents were over water, work barge had to be used to float the caps under the bridge Percent of the job required welding: Caps welded to the piles, cross-bracing welded to the piles, web stiffeners welded to the cap under each girder

47 PILE INSTALLATION Template in place for piles Driven Piles and Cross-bracing

48 CAP INSTALLATION Floating The Caps Completed Bent

49 WELDING

50 EMERGENCY REPAIRS FALGOUT AND DULAC FLOORBEAM REINFORCEMENT

51 FALGOUT AND DULAC FLOORBEAM REINFORCEMENT

52 FALGOUT AND DULAC FLOORBEAM REINFORCEMENT

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