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Herrera Airport
Group 2
Michael Ming Hei CalTech
María C Araya RSN
Cecilio Morales FUNVISIS
Dorian Restrepo CMU
Kenny García FUNVISIS
Claude Jean-Poix Haiti Gov
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Outline
MethodsHVSRREMIMASWSPAC
Results
Conclusions
Herrera Airport (ReMI, Masw and SPAC)
HSVR West Profile
HVSR East Profile
N
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HVSR
HVSR
Profile1 and Profile2
N
West Profile
East Profile
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HVSR
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HVSR
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HVSR Result
West Profile
East Profile
1 2 3 4 5 6 7 80
0.5
1
1.5
2
2.5
3
3.5
Period profile
West-1East-1East-0West-0
Stations from South to North
Peri
od T
(sec)
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ReMi – MASW Profiles
3 profiles
Remi & MASW 1
Remi 2
Remi 3
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ReMi
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MASW
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ReMi Profiles ReMi Airport 1shear velocity (m/s) Depth (m)layer best deviation best deviation
1 680.621 3% 0 8%2 1211.829 3% 24 13%3 1114.129 4% 39 11%4 1278.423 4% 94 9%5 2092.552 6% 172
ReMi Airport 2shear velocity (m/s) Depth (m)layer best deviation best deviation
1 793.319 4% 0 15%2 965.06 8% 27 20%3 1064.38 4% 42 14%4 1330.011 10% 104 6%5 2113.582 2.50% 149
ReMi 3shear velocity (m/s) Depth (m)layer best deviation best deviation
1 394.319 3% 0 11%2 619.908 7% 14.8 18%3 904.862 7% 24.4 18%4 1082.958 5% 51
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MASW Profile
MASW Airport 1shear velocity (m/s) Depth (m)layer best deviation best deviation
1 408 6% 0 10%2 832 10% 9.5 20%3 1486 4% 24.54 1278 40
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ReMi & MASW Profiles
670 IBC Class C
768 IBC Class B802 IBC Class B518 IBC Class C
Vs30
MASW
ReMi
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Methods
SPAC Two Arrays
Array 2
Array 1
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Geopsy Spac2dis
p dinver
SPAC: Three step procedure
TARGETED PROFILE
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Results At Herrera Airport400 800 1200 1600 2000 24000
40
80
120
160
200
Shear Velocity (m/s)
Depth
(m
)
SPAC South
ReMi 1 (Black solid line)
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Results At Herrera Airport0 1000 2000 3000
0
40
80
120
160
200Shear Velocity (m/s)
Depth
(m
) SPAC North
ReMi 2 (Black solid line)
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ConclusionsHerrera Airport
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ConclusionsHVSR
3 periods for each site
discarded the biggest cause of high uncertainty.
The other 2 were between 0.3 - 0.4 hz and 0.8 - 1.4 hz
MASW The only profile was
compared with REMI showing a good fit between them
REMI 5 layers Max depth around 160m
and > 2000 m/s for Vs. Low velocity layer between
45 - 100m of depth Airport soil is Class B
SPAC No low frequencies at the p-f
plot, which make it difficult to identify this range.
Spac results present high misfit. They however are in good agreement with other methods
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Conclusions
HVSR High influence on high
frequencies. Uncertainty in the analysis. Provides a fast estimate of
the basin shape and depth.
MASW Easy to make the site
caracterizacion but it takes more time for the acquition of data.
REMI Easy to classify a site
and do the caracterization.
Very fast analysis, and good resolution of penetration.
SPAC Time consuming on data
acquisition and analysis. Special needs for the
site to be able to do the acquisition.
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Thank YouAny questions?