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Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
SPS DECK SYSTEM for Truss Rehabilitation
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Table of Contents
2
7–10
11–15
16–31
3–6 What is SPS?
History
Where in the World?
Texas
1
2
3
4
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
What is SPS?
Sandwich plate system
3
Source: https://commons.wikimedia.org/wiki/File:SPS-Sandwich_Plate_System-_Sample.jpg
Polyurethane
core
Steel plates
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
What is SPS?
Thickness
Weight
4
SPS Sizes Steel (in.) - Polyurethane (in.) - Steel (in.)
3/8-1-3/8 (1 ¾″)
7/16-1-7/16 (1 ⅞″)
1/2-1-1/2 (2″)
Material Weight
Concrete (8″ thick) ~100 psf
SPS (2″) ~45 psf
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Where in the World
Europe
Canada
US
Asia
5
Source: http://www.vectortemplates.com/raster/maps-world-map-01.png
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Naval
6
Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Stadia
7
Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Buildings
8
Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Industrial
9
Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Bridges – New construction (County Road over Martin Branch, also known as
Center Creek)
10
Source: AASHTO SPS Webinar July, 2015
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Bridges – New construction (County Road over Martin Branch, also known as
Center Creek)
11
Source: AASHTO SPS Webinar July, 2015
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Bridges – Redecking (Dawson Bridge — Edmonton, Canada)
12
Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
History
Bridges – Redecking (Dawson Bridge — Edmonton, Canada)
13
Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
Proposed truss rehabilitation – SH 174 over the Brazos River
14
3-span continuous deck truss Built in 1950 Functionally obsolete Structurally deficient
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
Functionally obsolete – Roadway width 26 feet
Structurally deficient – “Corbel” supporting approach slabs
controls rating
15
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
Increase roadway width to 28 feet
New 8-inch thick deck will still keep the structure structurally deficient
– Most gusset plates would have to:
• Receive extra plates
• Rivet replacement
16
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
SPS – Decreases the deck dead load by over 50%
• Eliminates the need for gusset plates to receive supplementary plates • Substantially decreases the number of gusset plates needing
rivet replacement
17
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
18
Bridge deck will be replaced by phased construction.
*Assumes a 15-man crew for each deck type.
Deck Type Man Hours/SF *
2″ SPS 1.9
8″ Concrete 3.9
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
19
Panel connection details Source: Intelligent Engineering Project Portfolio
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
20
Curb connection details: – Thru-bolted – Welded DBRs or
headed studs
Types of rails used: – Steel post and beam – Concrete
TxDOT type T1F shown
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
21
Expansion joint connection details
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
22
Drain details
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
23
Source: http://www.concretebridgeviews.com/i75/Article2.php
Wearing surface — Multi-layer P\polymer overlay (MLPO) per TxDOT standard specification item 439, “Bridge Deck Overlays”
– Epoxy with aggregate “overlay”
– Thickness is generally 3/8″
– Replacement cycle between 5 to 10 years (depending on product)
– Ease of application • Temperature range 32⁰F to 104⁰F • Clean surface to product specifications • Apply primer • Apply resin (pot life of 15 to 20 minutes) • Broadcast aggregate • Apply sealant (product dependent)
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
24
Sizing One way span to depth ratio for SPS
Minimum girder depth calculated from AASHTO LRFD Table 2.5.2.6.3-1 – Depth = 0.033 x span (simple spans)
SPS Deck Size (in-in-in) Girder/Stringer Spacing (ft)
3/8–1–3/8 6–7
7/16–1–7/16 7.5–9
1/2–1–1/2 9.5–11
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
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Grading
SPS adaptable to any cross slope or superelevation; transitions handled panel to panel to panel with discrepancies taken up in wearing surface
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015
Texas
26
Distributors
Currently one distributor in the US located in Ohio
At least one more added to the US by the end of 2015
Due to cost, use on off system bridges might be cost prohibitive
Likely approach:
– Design with both concrete deck and SPS as an alternate
– Compared to SPS, concrete deck will
• require gusset plate strengthening or replacement
• rivet or bolt replacement
• longer construction duration
• ready-mix concrete availability could be a hindrance
Annual Transportation Short Course — Structures and Hydraulics October 24, 2015 27
Copyright 2015 • Texas Department of Transportation • All Rights Reserved Entities or individuals that copy and present state agency information must identify the source of the content, including the date the content was copied. Entities
or individuals that copy and present state agency information on their websites must accompany that information with a statement that neither the entity or individual nor the information, as it is presented on its website, is endorsed by the State of Texas or any state agency. To protect the intellectual property of state
agencies, copied information must reflect the copyright, trademark, service mark, or other intellectual property rights of the state agency whose protected information is being used by the entity or individual. Entities or individuals may not copy, reproduce, distribute, publish, or transmit, in any way this content for commercial purposes. This presentation is distributed without profit and is being made available solely for educational purposes. The use of any copyrighted
material included in this presentation is intended to be a ‘fair use’ of such material as provided for in Title 17 U.S.C. Section 107 of the US Copyright Law.
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