Difference between revisions of "Gpec8"
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== Description == | == Description == | ||
| − | Determines | + | Determines the EC8 category of a site for horizontally layered models given through stdin or FILE. |
| − | The input is the soil column (in a format similar to [[ | + | The input is the soil column (in a format similar to [[Gpdc]], [[Gpell]], [[Gpspac]] or [[Gpsh]]. |
| − | The output is the EC8 site category depending on the value of the time-averaged velocity over the top 30 m ("VS30") | + | The output is the EC8 site category depending mainly on the value of the time-averaged velocity over the top 30 m ("VS30"), and also on the thickness of the softest layers (categories E and S1) |
== EC8 site categories == | == EC8 site categories == | ||
| − | Category A : | + | *'''Category A :''' Rock, ''800 m/s < VS30'' and ''"including at most 5 m of weaker material at the surface"''. The latter condition is interpreted here as : ''VS05 > 360 m/s'', where VS05 is the average velocity over the top 5 m. |
| − | Category B : | + | |
| − | Category C : | + | 4 |
| − | Category D : | + | 5. 1200. 600. 2300. |
| − | Category E : | + | 10. 1800. 900. 2500. |
| − | Category S1 : | + | 10. 2400. 1200. 2600. |
| − | Category S2 : | + | 0. 3000. 1500. 2500. |
| + | 8 | ||
| + | 2. 800. 300. 2000. | ||
| + | 2.5 1200. 500. 2100. | ||
| + | 3. 1500. 700. 2200. | ||
| + | 3.5 1800. 900. 2300. | ||
| + | 4. 2000. 1000. 2400. | ||
| + | 5. 2200. 1100. 2500. | ||
| + | 6. 2400. 1200. 2500. | ||
| + | |||
| + | *'''Category B :''' Stiff soil / soft rock, ''360 m/s < VS30 < 800 m/s'' | ||
| + | |||
| + | 0. 2500. 1200. 2500. | ||
| + | # Model 3, class B | ||
| + | 3 | ||
| + | 5. 1000. 400. 2000. | ||
| + | 20. 1600. 400. 2100. | ||
| + | 0. 2200. 1000. 2500. | ||
| + | # Model 4, class B | ||
| + | 8 | ||
| + | 2. 750. 300. 2000. | ||
| + | 3. 1250. 500. 2100. | ||
| + | 4. 1500. 600. 2200. | ||
| + | 5. 1750. 700. 2300. | ||
| + | 6. 2000. 800. 2400. | ||
| + | 5. 2200. 1000. 2500. | ||
| + | 6. 2400. 1200. 2500. | ||
| + | 0. 2500. 1250. 2500. | ||
| + | # Model 5, class C | ||
| + | 5 | ||
| + | 3. 500. 150. 1600. 30. 15. | ||
| + | 5. 1500. 150. 1600. 50. 15. | ||
| + | 10. 1600. 300. 1800. 50. 30. | ||
| + | 20. 2000. 500. 2000. 100. 50. | ||
| + | 0. 2500. 1000. 2500. 200. 100. | ||
| + | # Model 6, class D | ||
| + | 5 | ||
| + | 5. 400. 110. 1500. | ||
| + | 10. 1500. 120. 1600. | ||
| + | 10. 1600. 150. 1650. | ||
| + | 10. 1700. 200. 1700. | ||
| + | 0. 2000. 300. 1900. | ||
| + | # Model 7, class E | ||
| + | 5 | ||
| + | 5. 400. 150. 1600. | ||
| + | 10. 1500. 250. 1700. | ||
| + | 10. 2000. 800. 2100. | ||
| + | 10. 2200. 1000. 2300. | ||
| + | 0. 2500. 1200. 2500. | ||
| + | # Model 8, class S1 | ||
| + | 3 | ||
| + | 40. 1500. 80. 1500. | ||
| + | 500. 2000. 600. 2000. | ||
| + | 0. 4000. 2000. 2500. | ||
| + | # Model 9, class S1 | ||
| + | 5 | ||
| + | 3. 600. 250. 1800. | ||
| + | 15. 1500. 80. 1600. | ||
| + | 10. 1600. 500. 2000. | ||
| + | 20. 2000. 800. 2200. | ||
| + | 0. 2200. 1000. 2500. | ||
| + | |||
| + | *'''Category C :''' Normal soil ''180 m/s < VS30 < 360 m/s'' | ||
| + | |||
| + | *'''Category D :''' Soft soil, ''100 m/s < VS30 < 180 m/s'' > | ||
| + | |||
| + | *'''Category E :''' Thin soft soil with ''100 m/s < VS < 360 m/s'' and a thickness between ''5 and 20 m'' , overlying a much stiffer unit with ''VS > 800 m/s'' | ||
| + | |||
| + | *'''Category S1 :''' Special category 1 : very soft soil ''(VS30 < 100 m/s)'', or containing at least 10 m of soft clays/silts with high plasticity index ''(interpretation considered here : VS lower than 100 m/s over a thickness larger than 10 m, '''labeled as "S1?"''')'' | ||
| + | |||
| + | *'''Category S2''' : Special category 2 : liquefiable soils, or all those not covered by A-E and S1 category: ''!! Cannot be identified from the sole VS velocity profile!!'' | ||
| + | |||
| + | ==Format for layered models== | ||
| − | |||
Line 1 : <number of layers n including half-space for first model> | Line 1 : <number of layers n including half-space for first model> | ||
Line 2 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>] | Line 2 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>] | ||
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Quality factors are not mandatory. Any number of models can be given as input. | Quality factors are not mandatory. Any number of models can be given as input. | ||
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== Examples == | == Examples == | ||
| − | + | gpec8 [[Media:Gpec8e.model|Gpec8.model]] | |
| − | |||
| − | |||
| − | + | Determines the EC8 site category for the soil columns in "ec8.model" | |
| − | + | *''' Output ''' | |
| − | + | Vs30 964.286 Class A | |
| + | Vs30 816.992 Class A | ||
| + | Vs30 444.444 Class B | ||
| + | Vs30 695.364 Class B | ||
| + | Vs30 271.084 Class C | ||
| + | Vs30 136.082 Class D | ||
| + | Vs30 330.275 Class E | ||
| + | Vs30 80 Class S1 | ||
| + | Vs30 135.135 Class S1? | ||
Latest revision as of 16:29, 9 March 2010
Synopsis
gpec8 [OPTIONS] [FILE]
Description
Determines the EC8 category of a site for horizontally layered models given through stdin or FILE.
The input is the soil column (in a format similar to Gpdc, Gpell, Gpspac or Gpsh. The output is the EC8 site category depending mainly on the value of the time-averaged velocity over the top 30 m ("VS30"), and also on the thickness of the softest layers (categories E and S1)
EC8 site categories
- Category A : Rock, 800 m/s < VS30 and "including at most 5 m of weaker material at the surface". The latter condition is interpreted here as : VS05 > 360 m/s, where VS05 is the average velocity over the top 5 m.
4 5. 1200. 600. 2300. 10. 1800. 900. 2500. 10. 2400. 1200. 2600. 0. 3000. 1500. 2500. 8 2. 800. 300. 2000. 2.5 1200. 500. 2100. 3. 1500. 700. 2200. 3.5 1800. 900. 2300. 4. 2000. 1000. 2400. 5. 2200. 1100. 2500. 6. 2400. 1200. 2500.
- Category B : Stiff soil / soft rock, 360 m/s < VS30 < 800 m/s
0. 2500. 1200. 2500. # Model 3, class B 3 5. 1000. 400. 2000. 20. 1600. 400. 2100. 0. 2200. 1000. 2500. # Model 4, class B 8 2. 750. 300. 2000. 3. 1250. 500. 2100. 4. 1500. 600. 2200. 5. 1750. 700. 2300. 6. 2000. 800. 2400. 5. 2200. 1000. 2500. 6. 2400. 1200. 2500. 0. 2500. 1250. 2500. # Model 5, class C 5 3. 500. 150. 1600. 30. 15. 5. 1500. 150. 1600. 50. 15. 10. 1600. 300. 1800. 50. 30. 20. 2000. 500. 2000. 100. 50. 0. 2500. 1000. 2500. 200. 100. # Model 6, class D 5 5. 400. 110. 1500. 10. 1500. 120. 1600. 10. 1600. 150. 1650. 10. 1700. 200. 1700. 0. 2000. 300. 1900. # Model 7, class E 5 5. 400. 150. 1600. 10. 1500. 250. 1700. 10. 2000. 800. 2100. 10. 2200. 1000. 2300. 0. 2500. 1200. 2500. # Model 8, class S1 3 40. 1500. 80. 1500. 500. 2000. 600. 2000. 0. 4000. 2000. 2500. # Model 9, class S1 5 3. 600. 250. 1800. 15. 1500. 80. 1600. 10. 1600. 500. 2000. 20. 2000. 800. 2200. 0. 2200. 1000. 2500.
- Category C : Normal soil 180 m/s < VS30 < 360 m/s
- Category D : Soft soil, 100 m/s < VS30 < 180 m/s >
- Category E : Thin soft soil with 100 m/s < VS < 360 m/s and a thickness between 5 and 20 m , overlying a much stiffer unit with VS > 800 m/s
- Category S1 : Special category 1 : very soft soil (VS30 < 100 m/s), or containing at least 10 m of soft clays/silts with high plasticity index (interpretation considered here : VS lower than 100 m/s over a thickness larger than 10 m, labeled as "S1?")
- Category S2 : Special category 2 : liquefiable soils, or all those not covered by A-E and S1 category: !! Cannot be identified from the sole VS velocity profile!!
Format for layered models
Line 1 : <number of layers n including half-space for first model> Line 2 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>] .... Line n+1 : 0 <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>] Line n+2 : <number of layers m including half-space for a second model - if wished> Line n+3 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>] .... Line n+m+2 : 0 <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>] Line n+m+3 : <number of layers l including half-space for a third model - if wished> ....
Quality factors are not mandatory. Any number of models can be given as input.
Examples
gpec8 Gpec8.model
Determines the EC8 site category for the soil columns in "ec8.model"
- Output
Vs30 964.286 Class A Vs30 816.992 Class A Vs30 444.444 Class B Vs30 695.364 Class B Vs30 271.084 Class C Vs30 136.082 Class D Vs30 330.275 Class E Vs30 80 Class S1 Vs30 135.135 Class S1?
