state project h.003181 - louisiana transportation … project location bridge description and...
TRANSCRIPT
State Project H.003181
Outline Project Location
Bridge Description and Previous Condition
Project Scope
Bent 25W, Details and Construction pictures
Bent 26W Construction pictures
Lessons Learned
References
Acknowledgements
Questions
I-10 WB Over Julia St. Girder Rehabilitation
Project Location
I-10 WB Over Julia St. Girder Rehabilitation
Project Location
Bridge Description and Previous Condition
Bridge Description Superstructure:
• 6 – Composite Steel Plate Girders
framed into Straddle Bent
• Girder Depth: 4’ to 5’-10”
• Span Length: 74’ to 132’
• ~44’ clear roadway
• 3 – 12’ lanes with 2 – 4’ shoulders
Substructure:
• Steel Plate Girder Straddle Bents
• Girder Depth: 6’ to 7’-3”
• 2 - 4’-6” Independent Reinforced
Concrete Columns
I-10 WB Over Julia St. Girder Rehabilitation
Bridge Previous Condition
Bent 26 W
Cracks in
Connection
Angles
Bent 26W
Emergency
Repairs
Bridge Previous Condition
Condition of Bent 25W
Condition of Bent 25W
Girder and Bearing Corrosion
Bent 26W:
Steel Plate Girder Straddle Bent Rehabilitation
Replace girder connecting angles, bearings,
blast and paint.
Bent 25W
Steel Plate Girder Straddle Bent Replacement
Replace ~71’ steel plate girder straddle bent
and bearings.
Traffic Control:
I-10/US 90 Interchange Near Superdome in New
Orleans
Two (2) weekend closures of I-10 WB
I-10 WB Over Julia St. Girder Rehabilitation
Project Scope
Project Scope
The structural modelization of the existing
bridge included the preparation of Finite
Element Analysis models to evaluate force
effects on bridge components, specifically, the
new cap beam and connection plates at both
bents, bent 25W and 26W.
Bent 25W
(Prep for
Straddle Bent
Removal)
Bent 25W
(Straddle Bent
Removal)
Bent 25W
(Straddle
Bent
Removed)
Removal of existing bearings and New
Disc Bearings at Bent 25W.
Bent 25W: New Girder
Bent 25W
Straddle
Bent
Installation
I-10 WB Over Julia St. Girder Rehabilitation
Eigenvalue Buckling Analysis was used to
evaluate the girder stability during erection.
The analysis produces load factors
equivalent to the Eigenvalues. The load
factors are values by which the applied loads
are factored to cause buckling in the model.
E I G E N V A L U E S MODE EIGENVALUE LOAD FACTOR ERROR NORM
1 0.922294 12.8689 0.108553E-08 2 0.940323 16.7569 0.144934E-08 3 0.973634 37.9273 0.482392E-06 4 0.975233 40.3771 0.420271E-07 5 1.02082 -48.0306 0.979921E-08
I-10 WB Over Julia St. Girder Rehabilitation
Bent 25W
(Deck closing pour)
Bent 25W
(Completed)
Bent 26 W
(Rehabilitation)
Temporary Support of Superstructure
Bent 26 W
Bent 26 W (Completed)
Lessons Learned
1. Modification to the Department Specifications for Disc Bearing are
needed. The Department will specify long-term deterioration tests on
full size disc bearings, rather than disc bearing components.
2. Preferred practice for steel bridges is to use girder proportions that
are conservative with respect to the American Association of State
Highway and Transportation Officials (AASHTO) minimum
requirements.
3. The least understood behavior is the early stages of bridge
construction when the girders are being erected.
References:
LUSAS (Bridge)(2015) [Computer software]. (2015). Finite Element Analysis, Ltd.
Stith, J.; Schuh, A.; Farris, J.; Helwig, T.; et. al. (2009). Guidance for Erection and
Construction of Curved I-Girder Bridges. (Rep. NO. FHWA/TX-10/0-5574-1.)
Austin, TX. Texas Department of Transportation / National Highway Institute.
Louisiana Department of Transportation (LADOTD). (2014). H.003181.6 I-10
WB Over Julia St. Girder Rehabilitation Project. New Orleans, LA.
I-10 WB Over Julia St. Girder Rehabilitation
Structural Design:
Victor Sanchez, P.E. (Lead)
Dusty Bastion, P.E.
Mark Bucci, P.E.
Road Design:
Patrick Toney, P.E. (Lead)
Joey Roberts, E.I.
Acknowledgements
Project Manager:
Mark Bucci, P.E.
Construction Cost: $1,388,482.50
Contractor: Coastal Bridge Co. LLC
LADOTD Construction
Thank you!
• Questions??