YEAH YOU KNOW ME

1
YEAH YOU KNOW ME
YOU DOWN WITH OPD?
DRAYTON BRIDGE DESIGN
OFFICE OF PROJECT DEVELOPMENT CONFERENCE 2008
O P D
2
PRELIMINARY ENGINEERING

• PROJECT OBJECTIVE
• PROVIDE 1 OF FREEBOARD BETWEEN LOW BEAM AND THE
  100-YR FLOOD EVENT
• LIMITS GIRDER DEPTH

3
PRELIMINARY ENGINEERING

• RED RIVER BRIDGE HISTORY
• MULTIPLE COLUMN PIERS TRAP LARGE DEBRIS.

4
(No Transcript)
5
PRELIMINARY ENGINEERING

• RED RIVER BRIDGE HISTORY
• MULTIPLE COLUMN PIERS TRAP LARGE DEBRIS.
• DESIGN A SINGLE COLUMN RIVER PIER
• PIERS IN RIVER BANKS HAVE A HISTORY OF MOVING

6
SOIL INSTABILITY
7
SOIL INSTABILITY
NOT A SAFE WAY TO MOVE PEOPLE AND GOODS
8
SOIL INSTABILITY
9
PRELIMINARY ENGINEERING

• RED RIVER BRIDGE HISTORY
• MULTIPLE COLUMN PIERS TRAP LARGE DEBRIS.
• DESIGN A SINGLE COLUMN RIVER PIER
• PIERS IN RIVER BANKS HAVE A HISTORY OF MOVING
• DESIGN ADJUSTABLE PIERS WITH CONTINUOUS BEAMS IN
  THE UNSTABLE RIVER BANK AREAS

10
ADJUSTABLE PIERS
SUPERSTRUCTURE
CONTINUOUS STEEL BEAM
ADJ BENT
RIVER
11
ADJUSTABLE ABUTMENT
PLACE JACK
REBOLT BEARING
JACK SUPERSTRUCTURE
UNBOLT BEARING
12
ADJUSTABLE ABUTMENT
13
ADJUSTABLE PIERS
ADJUSTABLE BENTS
14
ADJUSTABLE PIERS
STEEL BENT FRAME
GRADEBEAM
FOOTING
15
ADJUSTABLE PIERS
16
ADJUSTABLE PIERS
UNBOLT BEARING
REBOLT BEARING
BEARING
SHOP DRILLED HOLES IN BOT FLANGE
BOLTED TO BOTTOM OF GIRDER
BIG HAMMER
BENT COLUMN
ROCKER PLATE
17
ADJUSTABLE PIERS
18
ADJUSTABLE PIERS
19
ADJUSTABLE PIERS
20
NONADJUSTABLE PIERS
21
NONADJUSTABLE PIERS
22
PRELIMINARY ENGINEERING

• FROM DECISION DOCUMENT
• ADVANCE ALTERNATE 5B1-a
• BRIDGE LENGTH 4090
• THIS IS A LONG BRIDGE
• FROM MR SLOPE ANALYSIS
• END ADJUSTABLE PIERS AT STATION 731300

23
BRIDGE PLAN

PIER 23

• UNIT 1

• UNITS 2-4

• PIER ADJUSTMENT
• DESIGNED FOR
• NONE
• UNIT LENGTH
• 22 SPANS 2223-6

• PIER ADJUSTMENT
• DESIGNED FOR
• 5
• UNIT LENGTH
• UNIT 2 7 SPANS 681-3
• UNIT 3 4 SPANS 920-0
• UNIT 4 4 SPANS 265-3

24
UNIT 1
25
UNIT 1B
ELASTOMER
ELASTOMER
EXPANSION PIER
EXPANSION PIER
FIXED PIER
INTEGRAL WALL PIERS
26
UNITS 2-4
PIER 23B FIXED
FIXED ABUT
FIXED
27
FINGER JOINTS

• WEST FINGER 13.25 MOVEMENT
• EAST FINGER JOINT 8.5 MOVEMENT

28
ROCKER BEARINGS
29
DESIGN SPECIFICATIONS
30
LOADS

• 9 LOAD COMBINATIONS (GROUPS I-IX)

31
DECK DESIGN

• REINFORCED CONCRETE SLAB
• DESIGNED AS A CONTINUOUS BEAM OVER GIRDER
  SUPPORTS
• DEAD LOAD SLAB WEIGHT AND FUTURE OVERLAY
• LIVE LOAD HS25 TRUCK

32
GIRDER DESIGN

• UNIT 1

• GIRDER TYPE
• 54 PRESTRESSED CONCRETE I BEAMS
• LOADS
• DEAD LOAD GIRDER SELF WT, SLAB, RISERS,
  RAILING, FWS
• LIVE LOAD HS25 TRUCK OR LANE LOAD
• SOFTWARE USED
• CONSPAN LA
• 8035

33
GIRDER DESIGN

• UNITS 2-4

• GIRDER TYPE
• WELDED PLATE GIRDERS
• WEB DEPTHS
• UNIT 2 52
• UNIT 3 100
• UNIT 4 40
• LOADS
• DEAD LOAD AND LIVE LOAD (SAME AS UNIT 1)
• SOFTWARE USED
• SIMON

34
COLUMN DESIGN

• PIER TYPE
• CONCRETE HAMMER HEAD
• SINGLE COLUMN
• LOADS
• DEAD LOAD
• SUPERSTRUCTURE, CAP COLUMN WEIGHT
• LIVE LOAD
• ANALYZE DIFFERENT LOAD CASES
• GIRDER REACTIONS
• SOFTWARE
• 8010
• LIVE LOAD REACTIONS
• STAAD
• MODEL PIER

806.76
752.76
35
FOUNDATION DESIGN

• DEAD LOAD
• WT OF SUPER AND SUBSTRUCTURE

806.76
4783.0 k
136.7 k
752.76
36
FOUNDATION DESIGN
257.1 k
257.1 k
3855.9 k
771.2 k

• DEAD LOAD
• LIVE LOAD
• LANE REACTION FROM 8010 SOFTWARE
• HS25 TRUCK
• LANE LOAD

CONCENTRATED LOAD 32.5 k
UNIFORM LOAD 800 lb/
27.1 k
37
FOUNDATION DESIGN

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• 120 lb/ft3 62.4 lb/ft3 57.6 lb/ft3

806.76
HIGH WATER 801.26
878.5 k
MAX EARTH 760.08
25.1 k
752.76
38
FOUNDATION DESIGN

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• 62.4 lb/ft3
• VOLUME OF WATER DISPLACED BY THE CONCRETE PIER

806.76
HIGH WATER 801.26
MAX EARTH 760.08
752.76
31.6 k
1105.5 k
39
FOUNDATION DESIGN

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• STREAM FLOW PRESSURE
• Pmax 2K(Vavg2)
• MAX STREAM FLOW PRESSURE, Pmax
• CONSTANT, K 1.4
• AVG WATER VELOCITY, Vavg 2.5/s

806.76
HIGH WATER 801.26
2.2 k
88.2 k
MAX EARTH 760.08
0.2 k
752.76
40
FOUNDATION DESIGN

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• STREAM FLOW PRESSURE
• WIND LOAD ON STRUCTURE
• 50 lb/ft2 ON SUPERSTRUCTURE
• 40 lb/ft2 ON SUBSTRUCTURE
• 20 lb/ft2 OVERTURNING (GROUPS i-viii)

2329.2 k
9275.5 k
215.8 k
137.5 k
HIGH WATER 801.26
1.3 k
75.1 k
37.5 k
41
FOUNDATION DESIGN
1947.5 k

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• STREAM FLOW PRESSURE
• WIND LOAD ON STRUCTURE
• WIND LOAD ON LIVE LOAD
• 100 lb/ft APPLIED 6 ABOVE DECK

25.0 k
5.2 k
42
FOUNDATION DESIGN
2954.4 k
37.9 k

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• STREAM FLOW PRESSURE
• WIND LOAD ON STRUCTURE
• WIND LOAD ON LIVE LOAD
• LONGITUDINAL FORCE FROM LIVE LOAD
• BRAKING FORCE
• 5 LANE LOAD

9.4 k
43
FOUNDATION DESIGN

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• STREAM FLOW PRESSURE
• WIND LOAD ON STRUCTURE
• WIND LOAD ON LIVE LOAD
• LONGITUDINAL FORCE FROM LIVE LOAD
• TEMPERATURE
• Ff m Fn
• FORCE OF FRICTION FROM EXPANSION BEARINGS, Ff
• COEFFICIENT OF FRICTION, m 0.08
• NORMAL FORCE, Fn
• SUPERSTRUCTURE DEAD LOAD

0 k
44
FOUNDATION DESIGN

• DEAD LOAD
• LIVE LOAD
• EARTH PRESSURE
• BUOYANCY
• STREAM FLOW PRESSURE
• WIND LOAD ON STRUCTURE
• WIND LOAD ON LIVE LOAD
• LONGITUDINAL FORCE FROM LIVE LOAD
• TEMPERATURE
• ICE PRESSURE
• F Cn ptw
• HORIZONTAL ICE FORCE ON PIER, F (lbs)
• COEFFICIENT FOR NOSE INCLINATION, Cn 1
• EFFECTIVE ICE STRENGTH, p 200 psi
• THICKNESS OF ICE IN CONTACT WITH
• PIER, t 36 in
• WIDTH OF PIER AT THE LEVEL OF ICE
• ACTION, w 72 in
• APPLY 20 OF FORCE IN THE LONG DIRECTION (LONG
  AXIS OF BRIDGE)

7877.2k
HIGH WATER 801.26
731.8 k
38,787.5 k
MAX EARTH 760.08
128.9 k
45
FOUNDATION DESIGN
SPREADSHEET INPUT
46
FOUNDATION DESIGN
SPREADSHEET OUTPUT
47
FOUNDATION DESIGN
SPREADSHEET OUTPUT
48
FOUNDATION DESIGN
49
FUN FACTS

• TOTAL CONCRETE
• 11,123.40 CY
• TOTAL REINFORCING STEEL
• 1,520,199 LBS
• TOTAL STRUCTURAL STEEL
• 2,774,000 LBS
• TOTAL STEEL PILING
• 79,990 LF