RIGOLETS PASS BRIDGE ~ TEST PILE PROGRAM

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Ada Burns
5 years ago
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1 RIGOLETS PASS BRIDGE ~ TEST PILE PROGRAM By: Chris Nickel, P.E. LA DOTD Pavement & Geotechnical Services

2 BACKGROUND ~This state project consists of the construction of the new Rigolets Pass Bridge located in Orleans Parish along route US 90 near Chalmette, which is northeast of New Orleans. The Rigolets Pass waterway connects Lake Pontchartrain with the Gulf of Mexico. ~The existing bridge was built in 1931 and consists of two narrow traffic lanes along with a swing span to control major waterway traffic. In order to safely improve roadway and waterway traffic flow, a new two-lane high-rise structure will be built west of the existing structure. The new structure will consist of 63 bents with a total bridge length of 5,489 feet.

3 LAKE PONTCHARTRAIN I-10 TWIN SPANS SLIDELL MS. CAUSEWAY NEW ORLEANS LAKE BORGNE RIGOLETS PASS

4 EAST APPROACH ST. TAMMANY WEST APPROACH ORLEANS

5 EXISTING EAST APPROACH

6 SWING SPAN EXISTING STRUCTURE

7 PILES TESTED PROGRAM CONSISTS OF 6 PILES 2-30 SQUARE PPC 4 66 SPUN CAST POST TENSIONED CYLINDERS LOADING METHODS DYNAMIC / CAPWAP STATIC (30 TEST PILE #1 ONLY) STATNAMIC (3)

8 CPT SOIL BORING TEST PILE #1 30 PILES

9 TEST PILE #1 30 SQUARE PPC VOIDED TOTAL PENETRATION 44 DESIGN LOAD 195 TONS LOADINGS DYNAMIC / CAPWAP SET CHECKS : IEOD, 23 m, 60 m, 22 hr, & 15 d 14 DAY STATIC 21 DAY STATCAMIC

10 SOFT CLAY GROUND +1.8 RUN TIP

12 CPT CAPACITY PREDICTION

13 ENVIORNMENTAL CONCERNS VIBRATION MONITORING FORT PIKE THREATENED & ENDANGERED SPECIES GULF STURGEON WEST INDIAN MANATEE & SEA TURTLES

14 FORT PIKE

16 RETAINING WALL TO BE MONITORED

18 TEST PILE #1

20 AFT S STATNAMIC CABLES

21 TRANSMITTER RECEIVER

24 NOT MUCH TO DRIVE

25 COLLECTING THAT DATA OR NOT

26 *Not enough movement to fully mobilize the end bearing. EOD CAPACITY PREDICTIONS LOADING CAPWAP TIME IEOD 23 m 60 m 22 hr 15 d TOTAL CAPACITY (Tons) SKIN FRICTION (TONS) PERM NT DIS 32 BL/12 18 BL/6 29 BL/6 STATIC 14 d * (Stat.) 0.21 STATNAMIC 21d *

27 Pile Capacity, kn TIME VS. CAPACITY 7,000 STATNAMIC 21 DAY 6,000 5,000 4,000 3,000 IEOD 22 MIN 60 MIN 1 DAY 2,000 1, Elapsed Time t, days GRAPH PROVIDED BY PAUL BULLOCK, PHD., PE

28 66 CYLINDER PILES ~ SPUN CAST & POST TENTIONED 16 AND 8 SECTIONS TEST PILE LENGTHS BETWEEN GULF COST PRESTRESS PLANT (Pass Christian, Ms.)

29 STEEL REINFORCEMENT

30 CONCRETE PLACEMENT

34 16

36 OPEN DUCTS FOR STRAIN GAGES

37 SG 4 SG 3 SG 2 SG 1

39 CPT B-30 TP 2 LOW WATER FOOTINGS

41 DIAM. & L=153 EXCAVATED TO PILE RUN TIP ELEVATION PENETRATION

42 TP 3 TP 4 TP 2 IND

46 15 PLYWOOD PILE CUSHION

47 EOD CAPACITY PREDICTIONS TP 2 PREDICTED PERMANENT LOADING TIME CAPACITY DISPLACEMENT (Tons) CAPWAP Initial EOD hr. * STATNAMIC 21 days *1, *Not enough movement to fully mobilize the end bearing. Design Load = 635 tons

48 L = 200 EXCAVATED TO INITIAL REDRIVE PENETRATION = 100

49 EOD CAPACITY PREDICTIONS IND. PILE PREDICTED PERMANENT LOADING TIME CAPACITY DISPLACEMENT (Tons) CAPWAP Initial EOD hr STATNAMIC Design Load = 484 tons

50 TEST PILE # EXC L = 183 EXCAVATED TO PILE RUN = PENETRATION = 94.5

51 EOD CAPACITY PREDICTIONS TP 3 PREDICTED PERMANENT LOADING TIME CAPACITY DISPLACEMENT (Tons) CAPWAP Initial EOD hr. 1, STATNAMIC 22 days 1, Design Load = 483 tons

52 EOD CAPACITY PREDICTIONS TP 4 PREDICTED PERMANENT LOADING TIME CAPACITY DISPLACEMENT (Tons) CAPWAP Initial EOD hr. 1, STATNAMIC 30 days *1, *Not enough movement to fully mobilize the end bearing. Design Load = 587 tons

53 IND 5

54 IND. PILE #5 RUN 30 SQUARE -28.0

55 SANDS

56 EOD CAPACITY PREDICTIONS IP 5 PREDICTED PERMANENT LOADING TIME CAPACITY DISPLACEMENT (Tons) CAPWAP Initial EOD hr. * STATNAMIC *Not enough movement to fully mobilize the end bearing. Design Load = 162 tons