High Br Bridge e Re Re-Dec eck k Pr Project ct MnDOT DOT - - PowerPoint PPT Presentation

Prese sente nted d to:

• :

Minneso esota ta Departme rtment nt of Transportatio nsportation

High Br Bridge e Re Re-Dec eck k Pr Project ct

MnDOT DOT Contra ract ct No. 1000532

Bridge dge Repai air Recom

• mmend

endations ations

• Septem

tember ber 22, 2016

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Brid idge ge Overv erview iew

• 11 Total Spans, 2755’-0” Long
• 3-Span Continuous Steel Arch (282’-520’-242’) – Spans 3-5
• South Approach: 2-Span Continuous Multi-Girder Steel – Spans 1 & 2
• North Approach: 6-Span Continuous Multi-Girder Steel – Spans 6-11

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Brid idge ge Overv erview iew – Arch ch Spa pans ns

• Open Spandrel Tied Deck Arch
• Key Components: Arch Rib, Spandrel Columns, Tie
• Unique Aspects: Tie - W33X118 & 4 - Post-Tensioned (PT) Tendons

– PT Tendons Consist of 19 - 0.6” diam. Strands

Arch Rib Tie Spandrel Column Floor System – Deck, Stringers and Floorbeams Lateral Bracing

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Brid idge ge Overv erview iew – Arch ch Spa pans ns

• Arch

ch Spans ans – Spans ans 3-5

• Vari

riab able le Width th in Span n 3 & ½ o

• f S

Span an 4

• Width Varies from 54’-4” to 68’-10”

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Existing isting Brid idge ge Dec eck k / / Cros

• ss

s Sec ectio tion

Out-to-Out Width Varies from 54’-4” to 79’-1”

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Prop

• pos
• sed

ed Cross

• ss Sec

ection tion

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Brid idge ge Overv erview iew – Nor

• rth

th App pproa

• ach

ch Spa pans ns

• 6-Span Continuous Steel Multi-Girder (225’ Spans & 160’ N. End Span)
• 8’ Deep Constant Web Depth and Variable Depth Sections
• Unique Aspects:

– Horizontally-curved for northern end span – Variable-Width Flared and Kinked Framing – 11’-3” to ~14’ Variable Width Girder Spacing – Girder 3 is Partial Length with Sub-Stringer Added in Span 9 to support Deck

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Brid idge ge Overv erview iew – Sou

• uth

th App pproach

• ach Spa

pans ns

• 2-Span Continuous Steel Multi-Girder (~ 213’-213’)
• Approx. 13’ Girder Spacing, 12’-0” Web Depth
• Unique Aspects:

– Horizontally-curved – Variable-Width Flared and Kinked Framing

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Lo Load ad R Rat atin ing g Res esults ults (In Inve ventory ntory Le Level el)

Unit Component Bridge Originally Constructed (BOC) BOC with Condition & System Factors Bridge Re- Deck with Condition & System Factors Main Arch Spans Arch Rib 1.33 1.02 Final Report Spandrel Cols 1.74 1.28 Final Report Stringers 0.00 0.00 1.39 Floorbeams 0.39 0.03 Final Report Arch Tie 10.83 8.51 Final Report South Approach Girders 1.09 0.96 Final Report Cross-frames 1.41 1.30 Final Report North Approach Girders 0.86 0.76 Final Report Cross-frames 1.59 1.49 Final Report

• Low ratings

ngs largely rgely a funct ction

• n of code

e changes ges and/or

• r a resul

ult of sidew dewal alk k loadi dings ngs not consi sidere dered d in origi ginal nal design gn

• Arch

ch Rib b Strengt ngthenin hening g Not Requi quired

• Arch

ch Span Stringer ngers: s: – Origi ginal nal design gn assumed umed braci cing g at DL contraf raflexure exure points s and partial al comp mposi

• site

behavi avior,

• r, neither

her permi mitted ed by modern ern code – Bridge dge rehab ab will incl clude ude new diaphragm phragm braci cing ng and full comp mposi

• site design

gn with new deck deck

• Approach

roach Span n Gird rders ers: – Ratings ngs driven ven by Lateral ral Torsi sional

• nal Buckl

kling: g: Antici cipat ated d that addition

• n of select

ect new cross ss-fram rames es will improve prove invent ventory

• ry ratings

ngs above ve 1.0 as part of re-decki decking ng

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Ma Majo jor It Items ems of

• f Wor
• rk
• Deck Remova

val l & Replacement cement

– Arch h Spans ans: Dec eck Demolitio molition n and nd Replac placem ement ent to be Seque quenc nced ed with h PT Tie e De- Tens nsionin ioning/ g/Rep Repla lacemen ment

• Replaceme

cement nt of Arch h Tie PT Tendon

• ns
• Deck Constructio

truction

– Arch h Spans ans – 9” (Includes 2” Wearing Course) – Appro proac ach h Spans ans – 10 10” (Includes 2” Wearing Course) – Compo mposit ite Cons nstruc uction ion – Exis istin ing g Shear ear Stud ud Remov

• val

l and d Ins nstall all New – Stainle ainless Steel eel Rebar bar in Arch h Spans ans – 6 Deck Join ints, inc ncludin luding g 2 Modula dular r Joint ints

• Constructio

truction of Barri riers ers

– Constr nstructabilit bility of Slip-Form

• rming

ing of Barrier rriers – Aesthe hetic ic Treat eatmen ment to Barrier rriers – Bridge idge Light ghtin ing

• Decorative

rative Pedestria strian n Railing ng at Fascia cia

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Re Re-Deckin Decking g of

• f Arch

ch Spa pans ns

• Span Confi

figura rati tion = 282’-520’-242’ ; Out-to to-Out Width Varies 54’-4” to 68’-10”

• 9’-8” Typical Stringer Spacing within Constant-Width

Width Secti tion

• n
• 10’-6” Max Stringer Spacing in Flared Section
• Interi

erior r Stringe ingers rs – Simple ple-Made Made Conti tinu nuous us Betwe ween n Relief ef Joints nts

• Fascia

cia Stringe ingers rs – Fully ly Contin inuous s Betwee ween Relief f Joints ts Stress Relief Joint Stress Relief Joint

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Re Re-Deckin Decking g of

• f Arch

ch Spa pans ns

• Exist & Proposed Deck in Arch Spans = 9” Deck (Includes 2” Wearing Surface)
• Original Deck

k Constructi truction Sequence ce:

– Part rtia ial l Tie Post-Ten ensionin ioning g (PT) –

• 1. Plac

ace e Deck Between een PP 6-11 11; 2. PP19 19-23 23; 3. PP1-6; 6; 4: PP 23-27 7 (Nort

• rth End)

d) – Part rtia ial l Tie PT; 5. Plac ace e Deck Betwee een n PP 11 – 19.

• 9. Then

hen Part rtial ial PT – Cons nstru ruct Sidew ewalk lks, Barrie rriers rs, and nd Wearin aring g Surf rface; The hen n Finaliz nalize PT.

Stress Relief Joint Stress Relief Joint

1 6 11 19 23 27

1 2 FB Spacing = 40’ 3 4 5 5

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Re Re-Deckin Decking g Ana naly lysis sis

• Seque

uent ntial ial Cons nstruction truction Analysis lysis

Steel Arch Sequential Construction Analysis Model

• Deck Removal / PT De-Tensioning Sequence – Design team will assess two options for

CMGC to consider:

• Option 1: Reverse of Original Deck Construction
• Option 2: Removal in Longitudinal Strips Sequenced with PT De-Tensioning

Tie (WF & 4-PT Tendons)

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Rep epla lace cement ment of

• f Arch

ch Tie ie Ten endo dons ns

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Rep epla lace cement ment of

• f Arch

ch Tie ie Ten endo dons ns

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Rep epla lace cement ment of

• f Arch

ch Tie ie Ten endo dons ns

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Re Re-Deckin Decking g of

• f Sou
• uth

th App pproach

• ach Spa

pans ns

• Span Confi

figu gurati ration

• n = 212-9” – 212

212-9”

• Out-to

to-Out Width Varies 74’-9” to 68’-10”

• Girder Spacing Varies: 13’-2” max
• Exist

st & Proposed

• sed Deck

k = 10” Deck (Includes 2” Wearing Surface)

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Re Re-Deckin Decking g of

• f Nor
• rth

th App pproa

• ach

ch Spa pans ns

• Spans

ns 6-11: 11:

– 6-Span an Contin inuou

• us:

s: – 225’-225’-225’-225’-225’-160’ – 11 Deck Pours rs Anticipate icipated in Sequen ence ce

• Curved

rved End 2 Sp Spans ans

• Flar

ared ed Fram aming ng

– Out-to to-Out Width Varies 54’-4” to 79’-1”

• Girder Spacing Varies: 14’-0” max
• Additio

itional nal Girder der Line ne (and nd Sub-String tringer) er) added ded in Span n 9

• Existing Slab Varies from 9¼” to 10½”

(Including 2” Wearing Surface)

• Proposed
• posed Slab Thick

ickness ess = Cons nstan ant Thickness of 10” (To Be Confirmed)

Partial-Length Girder w/ Sub-Stringer

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

• Strin

inger er Diaphragm hragm Insta stall llati ation

• n (140 New Channel

el Diaphragms) ragms)

– String ringer ers Requir quire Bottom Flang ange e Bracin acing g Between een Supp pport

• rts for

r LTB chec ecks per r curre urrent nt AASHTO O LRFD D Code

• Install

tall Select ct New Cross-Frames Frames in North h Appro roach ach Spans

• Pot Beari

ring ng Replaceme cement nt at North th Abutme tment nt

Ma Majo jor It Items ems of

• f Ste

teel el Wor

• rk

New Diaphragms (Steel Channels Between Stringers) Select New Girder Cross Frames

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

• Floorbe

rbeam Overh rhan ang Strengthe engthenin ing

Ma Majo jor It Items ems of

• f Ste

teel el Wor

• rk

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

• Strin

inger er-to to-Floorbe Floorbeam Connection ction – Crack k Repairs rs

– Grind ind to Remove move Weld d and/ d/or

• r UIT Trea

eatmen ment

Ma Majo jor It Items ems of

• f Ste

teel el Wor

• rk

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Ma Majo jor It Items ems of

• f Wo

Work k Con

• nti

tinu nued ed

• Zone Pain

intin ting g at Join ints ts and Near Base e of Arch

• Pot Bearin

ring g Repla lace cement nt at North h Abutm tment ent

• Substru

structu cture e Concret crete e Repairs airs

• Abutm

tment ent Decorati rative ve Barrie rier Wall lls s to be Remove ved d for Const struction uction

• f Platfor

tform Overlo rlook

• ks

s over er Flared ed Wing ngwalls walls

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Construction nstruction Sche hedu dule le

• Proj
• ject

ect Letting: ing: Sept ptem ember ber 2017 17

• One Ye

Year r On-Si Site te Cons nstru truction ion (Comp

• mplete

ete by Dec 2018) 18)

• Importan
• rtant to b

begin gin plac acing ing deck ck concr ncrete ete in April il 2018 18

• Ar

Arch ch Sp Span an or Ap Approa proach ch Sp Span n Re-Decking Decking Pr Prefera ferable ble to b be Firs rst?

• Key

y Fall 2017 17 / Wint nter er 2018 18 Work: rk:

– Const nstr Submi mittal als s /Approval rovals s for Arch h Span Seque uenced nced Demol emolition

• n & PT Work

rk – Feb / March rch - Arch h Span an Demol molition

• n / PT Work

– Struct uctural ural Steel el and Modul ular ar Joint nt Shop p Draw awing ng Approvals rovals / Procurem curement ent

• Traf

affic ic Contro trol and d Constr nstructi ction

• n Co-ordinat
• rdination
• n with Adjac

acent nt Roadw adway y Proj

• ject

ects

H i g h B r i d g e R e - D e c k P r o j e c t ( B r i d g e 6 2 0 9 0 )

Que uesti stions

• ns an

and A d Ans nswer wers

Q A

&