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Prototype test Report #3 12Mar15 .pdf


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Prototype Tests - Report #3
Visit to EPS Facilities

Site: EPS Facilities at Mare Island, Vallejo, California
Date: 12 de marzo de 2015
Start: 9:00 a.m.
End: 4:30 p.m.
Attendants:
David Romero – SGS representative
Isis Hurtado – Puente Atlántico S.A.
Carlos Grunbaum – CCCC-LBG Consultant
Moisés Díaz – ACP Project Engineer

1.0 Description
EPS will manufacture a total of 6 prototypes divided as follows:
Prototype
- 2 prototype FPT15651/32-32/22-11
- 2 prototype FPT15641/22-20/16-8 F4
- 2 prototype FPT15636/18-16/12-7
1.1 Prototype Test of Bearings
The Prototype Bearing will be verified according to the Prototype Testing program which consists of 12
consecutive tests.
The vertical loads applied at each test for each type of bearing are specified in the table below.
Displacements and cycles are similar for all bearing type, except for the test PT-A1 which has a different
displacement for Prototype FPT15636/18-16/12-7. For further detail see table below.

Vertical Load
(Kips)

Testing Designation

Min. Cyclic
Displacement
(inches)

Number of Cycles

Thermal 13.2.2.1
PT-A1

FPT 15651
Avg. (D)
4400 (19642 kn)

According to Prototype
FPT 15641
Avg. (D)
1900 (8482 kn)

FPT 15636
Avg. (D)
950 (4240 kn)

± 4 (100 mm)*

3 cycles

Wind and Braking 13.2.2.2
PT-B1

Avg. (D)
4400 (19642 kn)

Avg. (D)
1900 (8482 kn)

Avg. (D)
950 (4240 kn)

± 1 (25 mm)

20 cycles

Seismic Test 13.2.2.3
PT-C1
PT-C2
PT-C3
PT-C4
PT-C5
PT-C6

Avg. (D)
4400 (19642 kn)
4400 (19642 kn)
4400 (19642 kn)
4400 (19642 kn)
4400 (19642 kn)
4400 (19642 kn)

Avg. (D)
1900 (8482 kn)
1900 (8482 kn)
1900 (8482 kn)
1900 (8482 kn)
1900 (8482 kn)
1900 (8482 kn)

Avg. (D)
950 (4240 kn)
950 (4240 kn)
950 (4240 kn)
950 (4240 kn)
950 (4240 kn)
950 (4240 kn)

± 12 (304 mm)
± 3 (76 mm)
± 6 (152 mm)
± 9 (228 mm)
± 12 (304 mm)
± 15 (381 mm)

3 cycles
3 cycles
3 cycles
3 cycles
3 cycles
3 cycles

Wind and Braking 13.2.2.4
PT-D1

Avg. (D)
4400 (19642 kn)

Avg. (D)
1900 (8482 kn)

Avg. (D)
950 (4240 kn)

± 1 (25 mm)

3 Cycles

Seismic Performance
13.2.2.5
PT-E1

Avg. (D)
4400 (19642 kn)

Avg. (D)
1900 (8482 kn)

Avg. (D)
950 (4240 kn)

± 12 (304 mm)

3 cycles

Stability 13.2.2.6
PT-F1
5634 (25151 kn)Max. 2800 (12500 kn)Max. 1300 (5800 kn)Max.
± 15 (381 mm)
PT-F2
2200 (9821 kn) Min.
950 (4241 kn) Min.
475 (2120 kn) Min.
± 15 (381 mm)
* Min. Cyclic Displacement to be applied at test PT-A1 for prototype FPT15636/18-16/12-7 is ± 5 in (127 mm)

1 Cycle
1 Cycle

2.0 Prototype tests performed during the day
Today 1 prototype was tested.
During the development of the tests, the bearing was accidentally tested to failure. Namely, when
performing the Seismic Performance test (PT-E1) a miscommunication with the cylinders that control
horizontal movement of the test machine caused the bearing to be tested beyond its displacement
capacity.
As a result, the safety ring that is installed in the Main Concave Plates failed as it is seen in image 1.
The test had to be redone.
Test PT-E1 and the remaining tests in this prototype were carried out regardless of this issue.
The failure of the ring seemed to have no effect in the results since maximum displacement of the
remaining test was 381 mm in both directions (PT-F1 and PT-F2), which does not provoke the slider to
be in contact with the safety ring.

Bearing Type
FPT 15651

Number Classification
1

Prototipo

Test
Prototype Test +
Quality Control

3.0 Images of the visit
Visual inspection of FPT 15651 #1 at the end of the tests.

Image 1: Lower Main Concave safety ring failure

Start

End

13:25

15:45

Image 2: Upper Slider Friction Surface (Friction Surface #2)

Image 3: Lower Main Concave Plate

Image 4: Upper Inner Slider Friction Surface (Friction Surface #1)

Image 5: Lower Slider Concave Plate

Image 6: Lower Slider Concave Plate

Image 7: Lower Inner Slider Friction Surface (Friction Surface #1)

Image 8: Upper Main Concave Plate (1)

Image 9: Upper Main Concave Plate (2)


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