Seismic Analyses of Embankment Dams and Slopes

Richard Armstrong, Civil Engineering

2021 ECS D3

2

Ground Motion Intensity Measures

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Time (sec)

2021 ECS D3

3

NDA Modeling and Validation

2021 ECS D3

4

Seismic Dam Damage Assessment

ShakeCast

2021 ECS D3

52021 ECS D3

Future Research

200 ft

400 ft

2H:1V t = t1, t2 d = d1, d2

(N1)60 = n1, n2

30 ft

Vs

Vs30

Vs

(used for IMs in NewmarkAnalyses)

(used for GM developmentand elastic half space)

30 m(98 ft)

20H:1V

42 ft

800 ft

100

ft

Dense sandSand

Stiff clayEmb.

Elastic half-space

Free-field

Free-field24 ft

GMsets

Groundmotions

Sandthick., t

Sanddepth, d

Sand SPT,(N1)60

Set A 11 GM Analysis

11 GM Analysis

11 GM Analysis

t1

d1

d2

ni

(i.e., n1 and n2 )

t2

t1

t2

Set B

Set A

Set B 11 GM Analysis

11 GM AnalysisSet A

Set B 11 GM Analysis

11 GM Analysis

11 GM Analysis

Set A

Set B

88 X 2

176 ANALYSES

62021 ECS D3

Thank you