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Post Seismic Bridge Inspection Post Seismic Bridge Inspection

Post Seismic Bridge Inspection - PowerPoint Presentation

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Uploaded On 2018-02-09

Post Seismic Bridge Inspection - PPT Presentation

Check Bearings 10 Steps of Assessment Check Approaches Check Rails Check Expansion Joints Check Wingwalls Check Abutments Check Bearings Check Girders Check Soffit and Deck ID: 629506

check bearings bearing cont

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Presentation Transcript

Slide1

Post Seismic Bridge Inspection

Check BearingsSlide2

10 Steps of Assessment

Check

Approaches

Check

Rails

Check

Expansion Joints

Check

Wingwalls

Check

Abutments

Check

Bearings

Check

Girders

Check

Soffit and Deck

Check

Bents or Columns

Check

CapsSlide3

Sixth Part

Bearings

Check

Approaches

Check

Rails

Check

Expansion Joints

Check

Wingwalls

Check

Abutments

Check

Bearings

Check

Girders

Check

Soffit and Deck

Check

Bents or Columns

Check

CapsSlide4

6. Bearings

1.

6. Bearings – broken keeper bolts, tilted rockers, cracked concrete under bearing pads

2.

2.

3.

4.

5.

6

.Slide5

6. Bearings (cont’d)

Steel Rocker Bearings

Tilted Rocker BearingSlide6

6. Bearings (cont’d)

Steel Bearings

Cracking under Masonry PlateSlide7

6. Bearings (cont’d)

Steel Pin Bearings

Minor Spalling of ConcreteSlide8

6. Bearings (cont’d)

Steel Pin Bearings

Moderate Girder Seat Cracking and SpallingSlide9

6. Bearings (cont’d)

Bearings at Hinge Seats

Significant Hinge Seat Edge Spalling / Hinge Still SoundSlide10

6. Bearings (cont’d)

Rocker Bearing

Missing/Toppled Bearing Rocker/Span on BlocksSlide11

6. Bearings (cont’d)

Rocker Bearings

Failed Rocker Bearing / Damaged Bottom FlangeSlide12

Exercise

Fill out forms for the last bridgeSlide13

STATE OF CALIFORNIA

SAFETY ASSESSMENT PROGRAM

BRIDGE

Assessment Report No. _________Slide14

Assessment Report # _________Slide15

Assessment Report # _____________Slide16

6. Bearings (cont’d)

All Bearings

Bearings Failed and Cannot Confirm Load PathSlide17

6. Bearings (cont’d)

Steel Pin Bearing and Others

Substantial Girder End Spalling above BearingSlide18

6. Bearings (cont’d)

Seat Loss

Girder End Spalling & Loss of Seat