introduction to bridge joints · pdf filebridge expansion joint locations bridge joint crappy...
TRANSCRIPT
![Page 1: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/1.jpg)
Introduction
To
Bridge Joints
Part of The Bridge College Presentations
![Page 2: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/2.jpg)
It is said, the great legendary coach, Vince
Lombardi - at the very beginning of every
season gathered up all his players –
and said….. “This is a Football.”
He was stressing –
FUNDAMENTALS.
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Bridge Joint Locations
Abutment
Side
Bridge Side
Bridge
Joint
This is a
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Bridge Expansion Joints Locations
Bridge Joint
Pier
Supporting
Spans
![Page 5: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/5.jpg)
Bridge Expansion Joint Locations
Bridge Joint
Crappy Old Bridge,
Being torn down.
Fancy New Bridge
This Joint is located at
An Abutment.
![Page 6: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/6.jpg)
Bridge Joint Locations
Bridge
Bridge Joint
Another Bridge Joint, way
down here.
Augusta – 3rd Bridge
Both these joints are
located at abutments
![Page 7: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/7.jpg)
Life Spans
Bridge = 75 to 100 Years Bridge Joints = 15 to
25 Years
![Page 8: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/8.jpg)
Types of Expansion Joints
• Compression Seal
• Gland Seal
• Finger Joint
• Pour In Place Seal
• Slab Over Backwall
• Modular Joints
Smallest amount of movement.
Medium movement.
Large movement.
Small movement.
Small movement.
Very large movement.
The Big
3
![Page 9: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/9.jpg)
Types of Expansion Joints
Finger
Joint
Compression
Seal
5” +/- 1” +/-
![Page 10: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/10.jpg)
Types of Expansion Joints
Gland
Seal No Joint, Slab
over Backwall
View from underneath 2 ½ “ +/-
![Page 11: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/11.jpg)
Components Of An Expansion Joint
Header or Nosing
Steel Armor
Neoprene Seal,
Either Compression
Or Gland.
![Page 12: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/12.jpg)
Components Of An Expansion Joint
Finger Joint
There is no seal on
A Finger Joint.
Sometimes NO
Header or Nosing.
![Page 13: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/13.jpg)
There is no neoprene
seal
on a finger joint.
But there is an
neoprene
or curtain
underneath it.
![Page 14: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/14.jpg)
Here is a
curtain
protecting a
bearing
beneath the
Finger Joint.
Drainage
from the
roadway is
expected to
fall through.
![Page 15: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/15.jpg)
Here is a
combination
curtain-trough
protecting the
bearing area.
Drainage from the
Roadway is expected
to fall through.
![Page 16: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/16.jpg)
Compression &
Gland Seals are
expected to keep
water on the bridge
These type of
joints make
use of the
Bridge Drains
on the bridge
deck.
![Page 17: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/17.jpg)
Cross Section View of Joint Neoprene Seal
In this case, the
joint is a Compression
Seal. A Gland Seal is
similar.
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We also use –
The Hot Rubber Machine! 1 ½ “ +/-
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The best joint is NO JOINT.
Slab over backwall design.
Normally the joint
would be here
Minimal Movement
![Page 20: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/20.jpg)
Modular Expansion Joints – very few.
Series of Rails
& Seals.
Lewiston-Auburn
![Page 21: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/21.jpg)
Summary of Joint Types
• Compression Seal
• Gland Seal
• Finger Joint
• Pour In Place Joint (& Hot Rubber)
• Elimination of joint entirely – by placing
concrete slab over the backwall.
• Modular Joint
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Why Are Expansion Joints There?
• Allow Bridge to expand and contract w/ temperature changes.
• Protect Bearings that are holding up bridge span.
• Protect Steel & Concrete Structures underneath – that are holding up the bridge.
View underneath Max Wilder Bridge
showing result of leaky joint seal.
Bridge Preservation!
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Bridge spans move with
temperature.
Cold Hot
Bridge gets shorter.
Therefore, the
Joint gets bigger.
Bridge gets longer.
Therefore, the
Joint gets smaller
Expansion Joints allow this to
happen under control.
![Page 24: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/24.jpg)
On an incredibly hot
day, would expect the
gap to be large, or
small?
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Bridge Preservation
Bad things happen without proper
Bridge Joint performance.
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Damaged Bearings Caused
By Drainage Through Failing Joint
Sandy River Bridge, New Sharon
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Joint Leakage
Leads to Steel
Deterioration
Sandy River
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Deteriorated Steel Superstructure
Caused by Leaky or Missing Joint Seals
Martin’s Point Bridge, Portland-Falmouth
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Damaged Bearings Joint Drainage
Stillwater Bridge,
Old Town
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Steel Superstructure Deterioration –
Through Joint Leakage
Big Holes,
Repair
Needed.
High Bridge,
Rumford
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Concrete Substructures Deteriorate From
Joint Leakage
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Serious Pier Deterioration
What likely was the cause? Stockton Springs
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Pier Deterioration From Joint Leakage
Compression
Seal Joint
Stockton Springs
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Transportation Worker Involvement
Most of the Time
• Wash Neoprene & Rubber Seals.
• Wash Curtain & Troughs – Finger Joint.
• Replacing Seals – Compression &
Gland.
• Removing and Replacing Headers or
Nosings. Usually an EMERGENCY.
![Page 35: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/35.jpg)
Transportation Worker Involvement
Occasionally
• Installing a Pour In Place Seal.
• Replacing or Adding Curtains &
Troughs.
• Advanced Repairs – Replacing Entire
Joints or Modifying Steel of a Joint.
![Page 36: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/36.jpg)
Washing is needed to clean out seals.
Rails or steel armor
Neoprene Seal Debris
Our Goal is Wash the bridge
once per year.
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Gland Seal Replacement
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Combination Lubricant/Adhesive
Starts out a lubricant, ends up and adhesive. No smoke break.
![Page 39: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/39.jpg)
Joint Problems Unidentified Bridge & Tukey’s Bridge, Portland
Closed Up Missing Steel
![Page 40: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/40.jpg)
Expansion Joint Problems
Seal Falling Out
Header Peeling Up
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Header Failure Frank J. Wood Bridge, Topsham
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Header Failure & Removal
Emergency Header Repair on Frank J. Wood Bridge
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HH
e
a
t
Header
Steel Joint
Material
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Donny
McKenna in
action. Max Wilder Bridge,
Arrowsic
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Removal of Header or Nosing
Max Wilder Bridge
BTW - This
existing material
is steel.
Exposed Rebar in
this case
![Page 46: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/46.jpg)
Replacement of Header (Nosing)
Max Wilder Bridge
In this case,
Rapid Set DOT
Repair Mix.
![Page 47: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/47.jpg)
Header or Nosing Material Used
New Capital Projects
WaboCrete II
Delcrete
E-Crete No. 57
Ply-Krete FS
Bridge Maintenance Repair
Silspec 900
Rapid Set DOT Repair Mix
P430 by EMACO
Dragon – 4hr Concrete Mix
Etc.
“At M & O - we like to experiment & we have to move fast.”
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Pour In Place Seals Used often when steel joint is uneven across the roadway.
2-Component Silicone Rubber Sealant
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Advanced Repairs
Field
Modifications
of Steel
New Armored
Expansion Device
MDOT Bridge Program
Contracts Out A Portion.
MDOT M & O
Accomplishes A Portion.
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DOT Crew converts expansion joint to
Slab-Over-Backwall. No Joint.
Joint along here has
been removed.
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Rehabilitation – New Header
Material & Modified Armor
Tukey’s Bridge,
Portland
Elastomeric
Concrete
Modified Steel
Armor
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Rehabilitation of Existing Joint Armor
Steel has been
welded on to
existing armor
Headers removed
& will be replaced
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Curb & Sidewalk Treatment Varies
Nothing is
ever easy.
![Page 54: Introduction To Bridge Joints · PDF fileBridge Expansion Joint Locations Bridge Joint Crappy Old Bridge, Being torn down. Fancy New Bridge This Joint is located at An Abutment](https://reader031.vdocuments.mx/reader031/viewer/2022021501/5aa2325a7f8b9ab4208cb506/html5/thumbnails/54.jpg)
Test
• Multiple Guess or
True or False
• 15 Questions.