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Ports of Los Angeles & Long Beach
Earthquake Ground Motion Criteria
By
Arul K. Arulmoli
Earth Mechanics, Inc.
Fountain Valley, California
California State Lands Commission
Prevention First 2008 Symposium
Long Beach, California
September 9-10, 2008
Outline
• MOTEMS Criteria vs POLA-POLB Criteria
• Purpose of Port-Wide Ground Motion Study
• Details of Ground Motion Study
• Summary
CBC 2007, Chapter 31F, Division 4
Table 31F-4-2
MOTEMS Seismic Performance Criteria
POLA-POLB DESIGN GROUND
MOTION CRITERIA
• Two Earthquake Levels (Probabilistic Approach)
– Operating-Level Earthquake (OLE)
• 50% Probability of Exceedance in 50 yrs.
(72-yr. Return Period)
– Contingency-Level Earthquake (CLE)
• 10% Probability of Exceedance in 50 yrs.
(475-yr. Return Period)
• Ports‟ OLE and CLE Criteria are Identical to MOTEMS Level 1 and Level 2 Earthquakes for High Risk MOTs
WHY PORT-WIDE GROUND
MOTION STUDY?
OLE (Level 1) RESPONSE SPECTRA FOR PAST POLA
& POLB CONTAINER WHARF PROJECTS
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.01 0.1 1 10Period (sec)
Spectr
al A
ccele
ration (
g)
Pier A & S
Pier G
Pier J-Staged Dike
Pier J-Full Dike
Pier T
POLA
5% Damping
CLE (Level 2) RESPONSE SPECTRA FOR PAST POLA
& POLB CONTAINER WHARF PROJECTS
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.01 0.1 1 10
Period (sec)
Spectr
al A
ccele
ration (
g)
Piers A & S
Pier G
Pier J-Staged Dike
Pier J-Full Dike
Pier T
POLA
5% Damping
40 AC. FILL
FIG
UE
RO
A12
.5x8
RC
BO
X
200GH
198
199
201
200A
2626
7.9
7.97.9
2626
117118
119
FORMER
HIG
H
YANGMING MARINE
TRANSPORT CORPORATION
185184
183
18
2
181
179
180
158
163
164
173
174
175
176
178
177
PUBLI
C U
TILI
TIES
CRO
SSIN
G21
7
218
GATE 1
STREET
210
209
208
207
206
202
203204
216
215
214
213
212
211191
192
193
194
YACHT S
T.
195
196
197
190
189
188
187
186
YUSEN
TERM
INAL
122
148
147
146
145
144
143
142
139138
137136
135
134132
131130
129128
127
126
154
155
156
157
165
166
16
7
123
124
125
9596
97
FRONTST.
VIEWLANDPLACE
CE
NT
ER
DR
IVE
KNOLL
115116
TANK
STREET
153
16
81
69
172
171
170
PUBLI
C U
TILI
TY
CRO
SSIN
G
OIL
PIP
ELI
NE
CRO
SSIN
G21
9
220
221
222
223
229
228
227
224VINCENT THOMAS BRIDGE
92
93A
93D
93E
CATALINATERMINAL
94
95
9697
100
151
150
149
SWIN
FORD ST.
EV
ER
GR
EE
N M
AR
INE
230
231
91
90
89
93BPASSENGER TERMINAL
SWINFORDST.
93C
REGAN ST.
KEEL S
T.
BO
ULE
VA
RD
LIB
RA
RY
ST
RE
ET
264
265266
267
27
0
271
260
267-
A
258
SHALLOW WATER HABITAT
JO
HN
S. G
IBS
ON
PA
RK
88
87
86
85
84
83
82
81
8079
78
77
7675
74
TIMMS W
AY
SAMPSON
PA
RK
ING
232
23
42
35
23
32
36
237
238
239
240A
240B
240C
261262
263
259
240 Z
FIRE STATION
NO.111
BOY SCOUTSOF AMERICACAMP
36
U.S.C. & G.S.TIDE STATION
50
40
39
38
37
WAY
SIG
NA
L
SIG
NA
L P
L.
CIT
Y O
F LA
SH
ED
5755
56CIT
Y O
F L
A-I S
TO
RY
SH
ED
54
58
5953
52
51
72
71
CIT
Y O
F LA
- SH
ED
60
BELL
70
ST
RE
ET
MU
NIC
IPA
L
WH
AR
EH
OU
SE
NO
.1
69
68
AD
MIR
AL H
IGB
EE
BEACON
BEACONMUNICIPAL PILOTS
RANGE LIGHTS
POINT FERMIN
BEACON
VICKERY
CLE
49
4847
46
45
44
SAN PEDRO B
REAKWATER (2.11 MILES LONG)
4000300020001000
U.S. COAST AND GEODETIC SURVEY DATUM PLANE
05001000
PUBLISHED BY THE BOARD OF HARBOR COMMISSIONERS OF THE CITY OF LOS ANGELES
2003
MIDDLE BREAKWATER (2
.37 MILES LONG)
BEACON
LIGHT
ANGELS GATE
LIGHTHOUSE
NA
GO
YA
AV
EN
UE
PORT OF LOS ANGELES CONTROLLED PROPERTY
COMMUNITYBUILDING
STREETNINTH
HILTON
HOTEL
PASHA T
ERM
INAL
EAGLE MARINE SERVICES
LANE VICTORY
AMERICANDIVER'SINC.
302
303
304
305
120
NUMBERS IN SQUARE = DEPTH OF WATER BELOW MEAN LOWER LOW WATERMETERS
FEET
4.615
4.6
15
4.6
15
12.240
12.2
40
15.5
51
15.5
51
15.5
51
13.7
45
15.5
51
15.5
51
11.6
38
6.1
20
2.7
9
2.7
9
2.7
9
0.6
2
4.6
15
10.7
35
4.6
15
3.712
3.712
10.735
10.7
35
1.8
6
0.6
2
2.7
9
7.9
26
9.1
30
24.6
81
22.8
75
13.745
13.7
45
9.1
30
5.5
18
3.712
6.1
20
6.722
4.6
15
4.6
15
16.2
53
2.4
8
13.745
12.2
40
13.7
45 13.7
45
13.7
45
13.7
45
13.7
45
12.2
40
13.7
45
13.7
45
10.7
35
13.7
45
13.7
45
13.7
45
13.7
45
10.7
35
13.7
45
13.7
45
3.7
12
13.7
45
3.0
10
10.7
35
121
72" SEWER OUTFALL
72" SEWER
OUTFALL
260
SEASIDE AVE.
53
16.2
81
24.6
24.6
81
75
22.8
81
24.6
81
24.6
81
24.6
81
24.6
301
404
403
402
401
405
4513.7
xx
x
x
x
x
x
x
x
x
x
x
x
x
x
xxx
x
x
xx
x x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
LEAST TERN SITE
TE
RM
INA
L
ISLAND
APM TERMINALS
L.A.X.T.
9.8
32406
(UNDER CONSTR.)
CHINA SHIPPING
HOLDING COMPANY
NAVY WAY
OCEAN BLVD
PIER 400
(UNDER CONSTR.)
SUBMERGED
MATERIAL
SITE STORAGE
D54
F208
S110
G226
T121 D31A
D40
C70
C58
B83
F204
T116
F211
D43
D38
F1
D28
C68
F201
S114
125 F10
S104
E1
2
B86
B80
G214
F206
D33
G211A
D44
G215
F203
D51
D50
D29
A94
C62
C74
D47
C65
S108
B76
D53
F207
A
A88
F6
HEN
RY
FO
RD
AVE
D41
B87
C71
D31
F3
C80
B82
D36
D39
123
G213
S106
S100
C64
F2
E27
S113
126F209
D35
DOCK
STREET
S102
PIER F
AVENUE
B85
B79
T118
J247
J249
F202
D45
E2
4
D48
G212
C55
D30
A96
C63
B77
D52
T122
A92
F4
127
S111
B75
C56
A90
T117
F210
D42
C66
C72
E2
6
C69
D32
S115
124
F8
BERTH A98
E1
3
C67
F205
F207
D34
B84
B78
T119
G216
D49
E2
5
C73
E11
S112
D46
TE
RM
INA
LIS
LA
ND
CO
MM
ON
BO
UN
DA
RY
LIN
E
KNOLL HILL
PORTS OF LOS ANGELES & LONG BEACH
JOINTLY OWNED RAILROAD RIGHT-OF-WAY
TERMINAL
TERMINAL
( A P L ) TERMINAL
CO
RPO
RA
TIO
N T
ER
MIN
AL
PO
RTS
O' C
ALL
( MAERSK SEALAND )
PREPARED BY THE PERMITS & R/W SECTIONENGINEERING & CONSTRUCTION DIVISION
UNDER THE SUPERVISION OF DARYL RAASCH
PIER 300
LAGOON
SEA PLANE
AND VICINITY
S A N P E D R O
D I S T R I C T
D
I
S
T
RI
CT
IS
LA
ND
TE
RM
IN
A
L
SOUTHWEST SLIP FILL (A2)
SOUTHWEST SLIP FILL (A1)
Fire Station
112 0.20g / 0.60g
0.25g / 0.38g
0.20g / 0.40g
LEGEND
OLE (Level 1) /
CLE (Level 2)
WHY PORT-WIDE GROUND MOTION STUDY?
• To Eliminate Confusion due to Different Response Spectra Developed by Different Consultants on Future Projects
• To Minimize the Need for Future Project-specific Ground Motion Studies
• To Develop Design Recommendations Using the Latest Available Geological, Seismological, and Geotechnical Knowledge
• To Develop Consistent Design Recommendations for both POLA and POLB
EXPERTISE REQUIRED FOR
GROUND MOTION STUDY
• Geologist: Defines Earthquake Fault Parameters
• Seismologist: Develops Ground Shaking Estimates for “Firm Ground” Using Probabilistic Seismic Hazard Analysis (PSHA)
• Geotechnical Engineer: Develops Design Ground Shaking Estimates by Incorporating Local Soil Conditions (i.e., Site Response Analysis)
• Structural Engineer: Designs the Structure (PRIMARY END USER)
GROUND MOTION STUDY PROCESS
GEOTECHNICAL
- Local site conditions
- Site Response Analyses
- Design Recommendations
GEOLOGY
- Fault & Earthquake Data
- Earthquake Recurrence Model
SEISMOLOGY
- Ground Shaking Attenuation
Model
- PSHA
- „Firm Ground‟ Shaking
STRUCTURAL
POLA-POLB GROUND MOTION STUDY TEAM
• POLA-POLB: Owners / Structural Engineering Review
• Dr. Norm Abrahamson: Seismology and PSHA
(Principal Investigator for Pacific Earthquake Engineering Research (PEER) / Lifelines Next Generation Attenuation (NGA) Project)
• Earth Mechanics, Inc.: Geology and Geotechnical Engineering (and Independent Check of Seismic Hazard Analysis)
POLA-POLB GORUND MOTION STUDY TEAM (Cont.)
TECHNICAL ADVISORY BOARD – EXPERT REVIEW
• Geology & Seismology: Dr. Tom Henyey (Emeritus Professor of
Geological Sciences and Geophysics, USC & Director Emeritus,
Southern California Earthquake Center)
• Geotechnical Engineering: Dr. Geoff Martin (Professor of Civil
Engineering, USC)
• Structural Engineering: Dr. Nigel Priestley (Emeritus Professor
of Structural Engineering, UCSD)
POLA-POLB GROUND MOTION STUDY PROCESS
GEOLOGYGEOTECHNICAL
STRUCTURAL
- Earthquake Recurrence Model
- Regional Fault Sources
SITE
For Each Fault
- Location - Magnitude - Style
- Slip Rate - Depth - Dip
- Length - Width
An
nu
al
Perc
en
tag
e
Magnitude
An
nu
al
Perc
en
tag
e
Magnitude
POLA-POLB GROUND MOTION STUDY PROCESS
SEISMOLOGY
GEOTECHNICAL
STRUCTURAL
Ele
vation (
ft)
0 20 40 feet
Scale
Clay/Silt
(Lagoonal Clay)
Sand to Silty Sand (Lakewood-San Pedro Formation)
CL Crane Rail CL Crane Rail
Sand to Silty
Sand, Sandy
Silt
QuarryRock
Rip-RapRun
Fill
(Fill)
(Hydraulic Fill)
Harbor Bottom
Sediments
-60
-20
-80
-120
-100
+20
-40Marine Sand
Accele
rati
on
Distance
- Attenuation Model
- PSHA (for “Firm Ground”)
“Firm Ground” motion from PSHAPeriod (s)
Sp
ectr
al A
cc
el.
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0.01 0.1 1 10
40 AC. FILL
FIG
UE
RO
A12.5
x8R
CB
OX
200GH
198
199
201
200A
2626
7.9
7.97.9
2626
117118
119
FORMER
HIG
H
YANGMING MARINE
TRANSPORT CORPORATION
185184
183
18
2
181
179
180
158
163
164
173
174
175
176
178
177
PU
BLI
C U
TIL
ITIE
S
CR
OSSIN
G217
218
GATE 1
STREET
210
209
208
207
206
202
203
204
216
215
214
213
212
211191
192
193
194
YAC
HT S
T. 1
95
196
197
190
189
188
187
186
YU
SEN
TER
MIN
AL
122
148
147
146
145
144
143
142
139138
137136
135
134132
131
130
129
128
127
126
15
41
55
156
157
165
166
16
7
123
124
125
9596
97
FRONTST.
VIEWLANDPLACE
CE
NT
ER
DR
IVE
KNOLL
115116
TANK
STREET
15
3
16
81
69
172
171
170
PU
BLI
C U
TIL
ITY
CR
OSSIN
G
OIL
PIP
ELI
NE
CR
OSSIN
G21
9
220
221
222
223
229
228
227
224
VINCENT THOMAS BRIDGE
92
93A
93D
93E
CATALINATERMINAL
94
95
96
97
100
151
150
149
SWIN
FORD S
T.
EV
ER
GR
EE
N M
AR
INE
230
231
91
90
89
93BPASSENGER TERMINAL
SWINFORD
ST.
93C
REGAN S
T.
KEEL S
T.
BO
UL
EV
AR
D
LIB
RA
RY
ST
RE
ET
264
265
266
267
27
0
271
260
267
-A
258
SHALLOW WATER HABITAT
JO
HN
S. G
IBS
ON
PA
RK
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
TIMM
S WAY
SAMPSO
N
PA
RK
ING
232
23
42
35
23
32
36
237
238
239
240A
240B
240C
261
262263
259
240 Z
FIRE STATION
NO.111
BOY SCOUTSOF AMERICACAMP
36
U.S.C. & G.S.TIDE STATION
50
40
39
38
37
WAY
SIG
NA
L
SIG
NA
L P
L.
CIT
Y O
F L
A S
HE
D
5755
56CIT
Y O
F L
A-I S
TO
RY
SH
ED
54
58
5953
52
51
72
71
CIT
Y O
F L
A- S
HE
D60
BELL
70
ST
RE
ET
MU
NIC
IPA
L
WH
AR
EH
OU
SE
NO
.1
69
68
AD
MIR
AL H
IGB
EE
BEACON
BEACONMUNICIPAL PILOTS
RANGE LIGHTS
POINT FERMIN
BEACON
VICKERY
CLE
49
48
47
46
45
44
SAN PEDRO B
REAKWATER (2.11 MILES LONG)
4000300020001000
U.S. COAST AND GEODETIC SURVEY DATUM PLANE
05001000
PUBLISHED BY THE BOARD OF HARBOR COMMISSIONERS OF THE CITY OF LOS ANGELES
2003
MIDDLE BREAKWATER (2
.37 MILES LONG)
BEACON
LIGHT
ANGELS GATE
LIGHTHOUSE
NA
GO
YA
AV
EN
UE
PORT OF LOS ANGELES CONTROLLED PROPERTY
COMMUNITYBUILDING
STREETNINTH
HILTON
HOTEL
PASH
A T
ER
MIN
AL
EAGLE MARINE SERVICES
LANE VICTORY
AMERICANDIVER'SINC.
302
303
304
305
120
NUMBERS IN SQUARE = DEPTH OF WATER BELOW MEAN LOWER LOW WATERMETERS
FEET
4.6
15
4.6
15
4.6
15
12.240
12.2
40
15.5
51
15.5
51
15.5
51
13.7
45
15.5
51
15.5
51
11.6
38
6.1
20
2.7
9
2.7
9
2.7
9
0.6
2
4.6
15
10.7
35
4.6
15
3.712
3.712
10.7
35
10.7
35
1.8
6
0.6
2
2.7
9
7.9
26
9.1
30
24.6
81
22.8
75
13.7
45
13.7
45
9.1
30
5.5
18
3.712
6.1
20
6.7
22
4.6
15
4.6
15
16.2
53
2.4
8
13.745
12.2
40
13.7
45 13.7
45
13.7
45
13.7
45
13.7
45
12.2
40
13.7
45
13.7
45
10.7
35
13.7
45
13.7
45
13.7
45
13.7
45
10.7
35
13.7
45
13.7
45
3.7
12
13.7
45
3.0
10
10.7
35
121
72" SEWER OUTFALL
72" SEWER
OUTFALL
260
SEASIDE AVE.
53
16.2
81
24.6
24.6
81
75
22.8
81
24.6
81
24.6
81
24.6
81
24.6
301
404
403
402
401
405
45
13.7
xx
x
x
x
x
x
x
x
x
x
x
x
x
x
xxx
x
x
xx
x x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
LEAST TERN SITE
TE
RM
INA
L
ISLAND
APM TERMINALS
L.A.X.T.
9.8
32
406
(UNDER CONSTR.)
CHINA SHIPPING
HOLDING COMPANY
NAVY WAY
OCEAN BLVD
PIER 400
(UNDER CONSTR.)
SUBMERGED
MATERIAL
SITE STORAGE
D54
F208
S110
G226
T121 D31A
D40
C70
C58
B83
F204
T116
F211
D43
D38
F1
D28
C68
F2
01
S114
125 F10
S104
E1
2
B86
B80
G214
F206
D33
G211A
D44
G215
F203
D51
D50
D29
A94
C62
C74
D47
C65
S108
B76
D53
F207
A
A88
F6
HE
NR
YFO
RD
AVE
D41
B87
C71
D31
F3
C80
B82
D36
D39
123
G213
S106
S100
C64
F2
E27
S113
126
F209
D35
DOCK
STREET
S102
PIER F
AVENUE
B85
B79
T118
J247
J249
F202
D45
E2
4
D48
G212
C55
D30
A96
C63
B77
D52
T122
A92
F4
127
S111
B75
C56
A90
T117
F210
D42
C66
C72
E2
6
C69
D32
S115
124
F8
BERTH A98
E1
3
C67
F205
F207
D34
B84
B78
T119
G216
D49
E2
5
C73
E11
S112
D46
TE
RM
INA
LIS
LA
ND
CO
MM
ON
BO
UN
DA
RY
LIN
E
KNOLL HILL
PORTS OF LOS ANGELES & LONG BEACH
JOINTLY OWNED RAILROAD RIGHT-OF-WAY
TERMINAL
TERMINAL
( A P L ) TERMINAL
CO
RP
OR
ATIO
N T
ER
MIN
AL
PO
RT
S O
' CA
LL
( MAERSK SEALAND )
PREPARED BY THE PERMITS & R/W SECTIONENGINEERING & CONSTRUCTION DIVISION
UNDER THE SUPERVISION OF DARYL RAASCH
PIER 300
LAGOON
SEA PLANE
AND VICINITY
S A N P E D R O
D I S T R I C T
D
I
S
T
R
IC
T
IS
LA
ND
TE
RM
IN
A
L
SOUTHWEST SLIP FILL (A2)
SOUTHWEST SLIP FILL (A1)
SITES SELECTED FOR PSHA (“FIRM GROUND”)
NORTH SITE
SITE 1
SOUTHEAST
SITE
NORTHEAST
SITE
SOUTHWEST
SITE
POLA
Zone II
Zone IV
Zone I
0 1,000 2,000
Scale
(feet)
SITE 1
NORTHEAST SITE
Zone III
SOUTHEAST SITE
NORTHWEST SITE
POLB
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0.01 0.10 1.00 10.00
Period (sec)
Spectr
al A
ccele
ration (
g)
Site 1
Site North
Site NorthEast
Site SouthEast
Site SouthWest
(5% Damping)
“Firm-Ground” CLE (Level 2) Acceleration Spectra at Different Sites
POLA
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.01 0.1 1 10
Period (sec)
Spectr
al A
ccele
ration (
g)
Site 1 - Western Site (Pier T nearest PV Fault)
Southeast Site (Pier J)
Northeast Site (Pier C)
Northw est Site (Pier S)
(5% Damping)
POLB
0.0
0.1
0.2
0.3
0.4
0.5
0.01 0.10 1.00 10.00
Period (sec)
Spectr
al A
ccele
ration (
g)
Site 1
Site North
Site NorthEast
Site SouthEast
Site SouthWest
(5% Damping)
POLA
“Firm-Ground” OLE (Level 1) Acceleration Spectra at Different Sites
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.01 0.1 1 10
Period (sec)
Spectr
al A
ccele
ration (
g)
Site 1 - Western Site (Pier T nearest PV Fault)
Southeast Site (Pier J)
Northeast Site (Pier C)
Northw est Site (Pier S)
(5% Damping)
POLB
POLA-POLB GROUND MOTION STUDY PROCESS
STRUCTURAL
GEOTECHNICAL
• Local Soil Conditions
• Site Response Analyses
• Design Recommendations
Ele
va
tio
n (
ft)
0 20 40 feet
Scale
Clay/Silt
(Lagoonal Clay)
Sand to Silty Sand (Lakewood-San Pedro Formation)
CL Crane Rail CL Crane Rail
Sand to Silty
Sand, Sandy
Silt
QuarryRock
Rip-RapRun
Fill
(Fill)
(Hydraulic Fill)
Harbor Bottom
Sediments
-60
-20
-80
-120
-100
+20
-40Marine Sand
“Firm Ground” Within Motion from PSHA
Output from
Site Response
Analyses
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.01 0.1 1 10
Period (sec)
Spectr
al A
ccele
ration (
g) (5% Damping)
OLE
CLE
Design
Recommendations
40 AC. FILL
FIG
UE
RO
A12
.5x8
RC
BO
X
200GH
198
199
201
200A
2626
7.9
7.97.9
2626
117118
119
FORMER
HIG
H
YANGMING MARINE
TRANSPORT CORPORATION
185184
183
182
181
179
180
158
163
164
173
174
175
176
178
177
PUBLI
C U
TILI
TIES
CRO
SSIN
G21
7
218
GATE 1
STREET
210
209
208
207
206
202
203204
216
215
214
213
212
211191
192
193
194
YACHT
ST.
195
196
197
190
189
188
187
186
YUSEN
TERM
INAL
122
148
147
146
145
144
143
142
139138
137136
135
134132
131
130
129
128
127
126
154
155
156
157
165
166
167
123
124
125
9596
97
FRONTST.
VIEWLANDPLACE
CE
NT
ER
DR
IVE
KNOLL
115116
TANK
153
168
169
172
171
170
PUBLI
C U
TILI
TY
CRO
SSIN
G
OIL
PIP
ELI
NE
CRO
SSIN
G21
9
220
221
222
223
229
228
227
224VINCENT THOMAS BRIDGE
92
93A
93D
93E
CATALINATERMINAL
94
95
9697
100
151
150
149
SWIN
FORD S
T.
EV
ER
GR
EE
N M
AR
INE
230
231
91
90
89
93BPASSENGER TERMINAL
SWINFORDST.
93C
REGAN ST.
KEEL S
T.
BO
ULE
VA
RD
264
265
266
267
270
271
260
267-
A
258
SHALLOW WATER HABITAT
JO
HN
S. G
IBS
ON
PA
RK
87
86
85
84
83
82
81
80
79
78
77
7675
74
TIMM
S WAY
SAMPSON
PA
RK
ING
232
234
235
233
236
237
238
239
240A
240B
240C
261262
263
259
240 Z
FIRE STATION
NO.111
BOY SCOUTSOF AMERICACAMP
36
U.S.C. & G.S.TIDE STATION
50
40
39
38
37
WAY
SIG
NA
L
SIG
NA
L P
L.
CIT
Y O
F L
A S
HE
D
5755
56CIT
Y O
F L
A-I S
TO
RY
SH
ED
54
58
5953
52
51
72
71
CIT
Y O
F L
A- S
HE
D60
BELL
70
ST
RE
ET
MU
NIC
IPA
L
WH
AR
EH
OU
SE
NO
.1
69
68
AD
MIR
AL H
IGB
EE
BEACON
BEACONMUNICIPAL PILOTS
RANGE LIGHTS
POINT FERMIN
BEACON
VICKERY
CLE
49
4847
46
45
44
SAN PEDRO B
REAKWATER (2.11 MILES LONG)
BEACON
LIGHT
ANGELS GATE
LIGHTHOUSE
NA
GO
YA
AV
EN
UE
COMMUNITYBUILDING
HILTON
HOTEL
PASHA T
ERM
INAL
EAGLE MARINE SERVICES
LANE VICTORY
AMERICANDIVER'SINC.
302
303
304
305
120
30
10.7
35
13.7
121
72" SEWER OUTFALL
72" SEWER
OUTFALL
260
SEASIDE AVE.
301
404
403
402
401
405
xx
x
x
x
x
x
x
x
x
x
x
x
x
x
xxx
x
x
xx
x x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
LEAST TERN SITE
TE
RM
INA
L
ISLAND
(UNDER CONSTRUCTION)
APM TERMINALS
L.A.X.T.
406
(UNDER CONSTR.)
SOUTHWEST SLIP FILL
CHINA SHIPPING
HOLDING COMPANY
NAVY WAY
OCEAN BLVD
PIER 400
(UNDER CONSTR.)
SUBMERGED
MATERIAL
SITE STORAGE
S104
A94 S108
HEN
RY
FO
RD
AVE
S106
S100
DOCK
STREET
S102
A96
A92
A90
BERTH A98
TE
RM
INA
LIS
LA
ND
CO
MM
ON
BO
UN
DA
RY
LIN
E
KNOLL HILL
TERMINAL
TERMINAL
( A P L ) TERMINAL
CO
RP
OR
ATIO
N T
ER
MIN
AL
PO
RTS
O' C
ALL
( MAERSK SEALAND )
PIER 300
LAGOONSEA PLANE
96
LEGEND
Site-specific
Investigations
Area-wide
Investigations
City o
f Long B
each
City o
f Los A
ngele
s
0 1000 2000
Scale(feet)
ZONE A
ZONE BZO
NE
C
ZONE D
City
of L
ong B
each
City
of L
os Angel
es
Zone A
Zone B
Zone C
NORTH SITE
SITE 1
SOUTHWEST SITE
NORTHEAST SITE
SOUTHEAST SITE
Note: Local variations may exist
Zone D
Soil Zones Used for Seismic Response Analyses
Zone II
Zone IV
Zone I
0 1,000 2,000
Scale
(feet)
SITE 1
NORTHWEST SITE
NORHEAST SITE
Zone III
SOUTHEAST SITE
POLB POLA
+20
+10
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
ELE
VA
TIO
N (
FT
)
400 1000 1200600 800
Fill
Design Water Table
Fill
Clay
Input Motion
Older Alluvial
Hydraulic Fill /
Holocene Sands
POLA, ZONE C
+20
+10
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
ELE
VA
TIO
N (
FT
)Shear Wave Velocity (ft/s)
400 1000600 800
Hydraulic Fill
Fill
Design Water Table
Hydraulic Fill
Harbor Sediments
Fill
Alluvial/GaspurDeposits
POLB, ZONE IV
0 200
Input Motion
Shear Wave Velocity (ft/s)
0
Selected Soil Profiles Used for Site Response Analyses
POLA-POLB DESIGN OLE (LEVEL 1) & CLE
(LEVEL 2) COMPARISONS
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.01 0.1 1 10
Period (sec)
Sp
ect
ral A
cce
lera
tion
(g
)
POLA OLEPOLB OLEPOLA CLEPOLB CLE
(5% Damping)
SUMMARY
TWO LEVELS OF GROUND MOTIONS
• POLA-POLB Port-Wide Ground Motion Study is Based on:
- Latest Geologic and Seismic Knowledge
- Extensive Local Geotechnical Information
- Independent Review by a Panel of Experts
• This Study Provides the Following Recommendations:
- Unified Sets of OLE (Level 1) and CLE (Level 2) Response Spectra for Future Design
- Unified Set of Geotechnical Recommendations for Seismic Evaluations
- Seven Sets of Acceleration-Time Histories (For Complex Structural and Geotechnical Evaluations, if Needed)
Acknowledgement
• Peter Yin, Angel Lim (Port of Los Angeles)
• Jim Santa Ana, Cheng Lai (Port of Long Beach)
• Nigel Priestley (Professor Emeritus, UCSD)
• Geoff Martin (Professor, USC)
• Tom Henyey (Professor Emeritus, USC)
• Norm Abrahamson (Consultant)
• Po Lam & Bruce Schell (Earth Mechanics, Inc.)
• Staff at Earth Mechanics
Thank You!
