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ATLAS POT BEARING

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1. Pot2. Piston3. Elastomeric Pad4. Sliding Plate5. Stainless Steel Plate 6. PTFE7. Dust Seal8. POM Seal9. Anchor Bolts

4

5

627

83

1

9

POT BEARING WORKING PRINCIPLE

ATLAS Pot Bearing is used for structures such as bridges and viaducts which are exposed to different rotational and displacement effects, and is designed according to EN 1337-5, AASHTO LRFD .

ATLAS POT BEARING

ATLAS Pot Bearings consist of a steel pot, an elastomeric pad in this pot, and a steel piston element that transmits the vertical load and rotational effects of the superstructure on the elastomeric pad to the substructure. The elastomeric pad can safely accommodate rotational effects up to 0.03 radians by a viscous fluid motion in the pot.

The horizontal and vertical forces transferred from superstructure are transferred to the pot by the piston. If required, pot bearings can make free horizontal movements in one direction or in all directions. The horizontal movement is provided by a special PTFE material placed on the piston with low friction and high pressure resistance.

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DESIGN STANDARDSATLAS Pot Bearings are designed according to European Standards and has a CE Quality Certificate. If required, pot bearings can be designed according to AASHTO LRFD or other international standards.

Standards used for design are:

EN 1337-1 General Design RulesEN 1337 - 2 Sliding Elements EN 1337-5 Pot BearingsAASHTO LRFD Bridge Design Specification

DESIGN CRITERIA

ATLAS-F

ATLAS-F (Fixed Pot Bearing) ATLAS-F type pot bearing is blocked for horizontal movements and can work on rotational motion up to 0.03 radians. They transmit the vertical and horizontal forces from the superstructure to the substructure safely through anchor bolts and plates.

ATLAS POT BEARING TYPES

Each type of pot bearings can safely meet rotational movements up to 0.03 radians.

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ATLAS-U and ATLAS-G (Guided Pot Bearing) ATLAS-U and ATLAS-G type pot bearings are, sliding type with horizontal movement in one direction by guides placed in the center (ATLAS-U) or placed at sides (ATLAS-G) of the piston. The movement in the perpendicular direction to the guide is prevented while a free movement is provided in the direction of the guide. The unidirectional horizontal movement is achieved between lubricated PTFE and stainless steel placed on the piston.

ATLAS – S (Free Sliding Pot Bearing) Free sliding pot bearing are used in order to reduce the horizontal forces transmitted to the infrastructure and horizontal movement in all directions. Free horizontal movement is provided between lubricated PTFE and stainless steel placed on the piston.

ATLAS-S

ATLAS-U ATLAS-G

Elastomeric PadElastomeric pad is produced from natural rubber (NR) according to the criteria specified in

EN 1337-5. It is placed in the pot under high pressure and temperature in accordance with the

standard and dimensions determined by the design. Arsan produces highest quality elastomeric

pad by its rubber over 60 years.

Structural SteelCompliant to EN10025-2 standard, 3.1 Certified, S355 quality structural steel. According to the

qualities. The structural steel for required size of the pot bearing is machined by modern

CNC machines in ARSAN plants.

PTFE (Polytetrafluoroethylene)Standard PTFE has a characteristic compressive strength of 90 MPa. In sliding type of pot bearings,

surfaces that come in contact with stainless steel play a key role due to the high pressure resistance

and low friction properties. They are used with 3.2 certified oil channels or straight in accordance

with EN1337-2 standard.

Stainless SteelStainless steel is a material that contacts with PTFE directly and provides smooth and low-friction

sliding action in sliding types of pot bearings.

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POT BEARING COMPONENTSATLAS Pot Bearings consist of elastomeric pad, sliding material, stainless steel, connection plates and anchorage elements

NOTES: These components may vary according to project requirements.

Sliding Plate

Piston

Pot

Elastomeric Pad

Lubricant

Anchorage Bolts

S355

S355

S355

NR

Components Material

10.9

Silicone

6

P : Axial Load D : Piston Diameter

Vx,y : Design Shear Force H : Pot Bearing Height ATLAS-FFixed Pot Bearing

ATLAS-SFree Sliding Pot Bearing

P : Axial Load V1 : Longitudinal Displacement Capacity

C : Top Plate Long Edge Length

ATLAS -S1 - 50/20

ATLAS -S2 - 50/20

ATLAS -S3 - 50/20

ATLAS -S4 - 50/20

ATLAS -S5 - 50/20

ATLAS -S6 - 50/2

ATLAS -S7 - 50/20

ATLAS -S8 - 50/20

ATLAS -S9 - 50/20

ATLAS -S10 - 50/20

ATLAS -S12 - 50/20

ATLAS -S14 - 50/20

ATLAS -S16 - 50/20

ATLAS -S18 - 50/20

ATLAS -S20 - 50/20

ATLAS -S25 - 50/20

ATLAS -S30 - 50/20

ATLAS -S40 - 50/20

ATLAS -S50 - 50/20

ATLAS -S75 - 50/20

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

12000

14000

16000

18000

20000

25000

30000

40000

50000

75000

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

210

280

340

380

430

460

490

520

550

580

630

680

720

760

800

900

960

1150

1250

1550

370

450

500

540

575

610

640

670

700

750

800

850

920

960

1000

1100

1200

1350

1460

1750

71

82

91

98

101

107

112

113

121

128

143

151

164,5

178,5

186,5

210,5

240,5

266

325

406,5

25

50

75

100

120

150

175

190

230

275

370

455

560

680

800

1125

1550

2300

3450

6450

310

380

440

485

535

575

625

650

675

730

790

850

930

975

1025

1150

1250

1405

1550

1850

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

P(kN) (rad)

B(mm)

L(mm)

C(mm)

V1(mm)

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

± 20

V2(mm)

H(mm)

W(kg)

ATLAS - F1

ATLAS - F2

ATLAS - F3

ATLAS - F4

ATLAS - F5

ATLAS - F6

ATLAS - F7

ATLAS - F8

ATLAS - F9

ATLAS - F10

ATLAS - F12

ATLAS - F14

ATLAS - F16

ATLAS - F18

ATLAS - F20

ATLAS - F25

ATLAS - F30

ATLAS - F40

ATLAS - F50

ATLAS - F75

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

141

283

424

566

707

849

990

1131

1273

1414

1697

1980

2263

2546

2828

3536

4243

5657

7071

10607

210

300

365

425

480

525

565

610

640

680

740

810

860

910

960

1100

1180

1440

1625

1850

52

58

64

71

76

85

92

98

101

107

116

124

133

141

146

164

182

200

233

279

310

400

485

575

630

700

750

790

800

850

925

1000

1050

1125

1150

1300

1375

1675

1875

2075

15

30

45

65

85

115

150

180

205

240

310

400

480

575

655

1000

1250

2000

3050

4650

P(kN)

Vx,y(kN) (rad)

B(mm)

D(mm)

H(mm)

W(kg)

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

12000

14000

16000

18000

20000

25000

30000

40000

50000

75000

ATLAS-GGuided Pot Bearing

P : Axial Load C : Top Plate Long Edge Length

Vx,y : Design Shear Force V1 : Longitudinal Displacement Capacity

L : Top Plate Short Edge Length

ATLAS - G1 - 50

ATLAS - G2 - 50

ATLAS - G3- 50

ATLAS - G4 - 50

ATLAS - G5 - 50

ATLAS - G6 - 50

ATLAS - G7 - 50

ATLAS - G8 - 50

ATLAS - G9 - 50

ATLAS - G10 - 50

ATLAS - G12 - 50

ATLAS - G14 - 50

ATLAS - G16 - 50

ATLAS - G18 - 50

ATLAS - G20 - 50

ATLAS - G25 - 50

ATLAS - G30 - 50

ATLAS - G40 - 50

ATLAS - G50 - 50

ATLAS - G75 - 50

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

12000

14000

16000

18000

20000

25000

30000

40000

50000

75000

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

315

365

405

460

495

530

570

600

630

660

730

770

810

860

900

990

1080

1265

1440

1710

425

475

535

600

635

680

720

750

760

800

880

910

950

1020

1030

1140

1190

1400

1570

1820

86

92

98

111

117

133

139

148

157

163

164

194

208

212

235

259

297

324

337

432

50

70

100

140

170

235

275

330

380

450

550

740

890

1020

1270

1720

2310

3560

4690

8470

375

430

500

580

625

685

735

775

800

840

925

975

1025

1100

1150

1275

1350

1625

1825

2100

141

283

424

566

707

849

990

1131

1273

1414

1697

1980

2263

2546

2828

3536

4243

5657

7071

10607

P(kN)

Vx,y(kN) (rad)

B(mm)

L(mm)

C(mm)

V1(mm)

H(mm)

W(kg)

ATLAS - U1 - 50

ATLAS - U2 - 50

ATLAS - U3- 50

ATLAS - U4 - 50

ATLAS - U5 - 50

ATLAS - U6 - 50

ATLAS - U7 - 50

ATLAS - U8 - 50

ATLAS - U9 - 50

ATLAS - U10 - 50

ATLAS - U12 - 50

ATLAS - U14 - 50

ATLAS - U16 - 50

ATLAS - U18 - 50

ATLAS - U20 - 50

ATLAS - U25 - 50

ATLAS - U30 - 50

ATLAS - U40 - 50

ATLAS - U50 - 50

ATLAS - U75 - 50

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

12000

14000

16000

18000

20000

25000

30000

40000

50000

75000

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

0,010

265

335

385

430

480

525

555

590

625

660

730

785

840

900

960

1065

1150

1400

1600

1840

425

475

535

600

635

680

720

750

760

800

860

910

950

950

1020

1030

1140

1395

1495

1770

100

109

115

123

128

134

144

154

163

170

191

202

218

223

247

275

316

347

424

500

55

90

120

160

200

250

300

360

415

485

665

805

980

1100

1425

1840

2540

4150

6515

10225

375

450

505

580

630

685

735

775

785

835

910

975

1025

1100

1150

1275

1350

1625

1825

2075

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

141

283

424

566

707

849

990

1131

1273

1414

1697

1980

2263

2546

2828

3536

4243

5657

7071

10607

P(kN)

Vx,y(kN) (rad)

B(mm)

L(mm)

C(mm)

V1(mm)

H(mm)

W(kg)

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P : Axial Load C : Top Plate Long Edge Length

Vx,y : Design Shear Force V1 : Longitudinal Displacement Capacity

L : Top Plate Short Edge Length

ATLAS-UGuided Pot Bearing

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

± 50

CORROSION PROTECTIONIn order to protect pot bearings from environmental effects, corrosion protection measures are defined clearly in EN 1337-9.Steel parts which are exposed to external effects must be protected against corrosion.

Standard corrosion protection is as follows:

Special precaution must be taken to protect surfaces since hard chrome plating is not resistant to chlorine or fluoride in acid solution and may be damaged by airborne particles existing in industrial environments.Additional measures must be taken for protection against electrolytic corrosion at locations where other types of metals are used.

PROTECTION AGAINST DIRTThe sliding surface must be protected against dirt by suitable materials. Such protection materials should be easily removable in the event of inspection. Sliding surfaces should be cleaned before installation. During installation process, greasy surfaces must be protected against dirt.

WARRANTY Pot bearings manufactured by ARSAN are guaranteed for 10 years from delivery date, provided that bearings are transported, tored and installed in accordance with EN standards.

MAINTENANCE AND INSPECTIONMaintenance and inspection of pot bearings must be realized visually at the frequency of structure inspection. Pot bearings should also be inspected after natural disasters such as large-scale accidents and earthquakes which will affect the structure.

According to EN 1337-10 there are two types of inspections to be carried out for pot bearings.

In regular Inspection;

should be examined.

The main inspection can be done less frequent than regular inspections. During main inspection, examinations carried out at regular inspections must be done more detailed. It is recommended that the first main inspection to be done after 1 year service life of structure.

8

s m

in

s m

ax

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STORAGEBearings are sent to site as ready for installation and it is recommended to install bearings immediately. If the installation cannot be done immediately, bearings must be stored in a way that they are protected from dust, dirt, impact and other harmful effects.

INSTALLATIONInstallation instruction is sent for each type of bearing that has been delivered to site. In case an exceptional installation method

DISPLACEMENT SCALEDisplacement scale is placed on the sliding type pot bearings showing horizontal displacements.

PRODUCT LABELINGEach pot bearing has a label on it with technical details of its type, properties and installation details.

CE CERTIFICATE

ATLAS Pot Bearings are fully compatible with EN standards and have CE certificate approved by MPA Karlsruhe. The CE certificate proves that all requirements of the relevant European Standard are fulfilled during design and production of bearing.

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