Difference between revisions of "Gpec8"

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== Description ==
 
== Description ==
  
−
Determines the the EC8 category of a site for horizontally layered models given through stdin or FILE.   
+
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 [[geopsy:gpsh|gpsh]]
+
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 :  Rock, <math> 800 m/s < VS30  </math> AND <math>VS05 > 360 m/s </math>
+
*'''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 :  Stiff soil / soft rock, <math> 360 m/s < VS30  < 800 m/s </math>
 
−
Category C :  Normal soil <math> 180 m/s < VS30  < 360 m/s </math>
 
−
Category D : Soft soil, <math> 100 m/s < VS30 < 180 m/s </math>
 
−
Category E : Thin soft soil with <math> 100 m/s < VS  < 360 m/s </math> and a thickness between 5 and 20 m , overlying a much stiffer unit with <math>VS > 800 m/s </math>
 
−
Category S1 : Special category 1 : very soft soil (<math> VS30  < 100 m/s </math>), or containing at least 10 m of soft clays/silts with high platicity index
 
−
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:
+
4
−
  Line 1 : <number of layers n including half-space for first model>
+
  5. 1200. 600. 2300.
−
  Line 2 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
+
  10. 1800. 900. 2500.
−
  ....
+
10. 2400. 1200. 2600.
−
  Line n+1 : 0 <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
+
0. 3000. 1500. 2500.
−
  Line n+2 : <number of layers m including half-space for a second model - if wished>
+
8
−
  Line n+3 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
+
2. 800. 300. 2000.
−
  ....
+
2.5 1200. 500. 2100.
−
  Line n+m+2 : 0 <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
+
3. 1500. 700. 2200.
−
  Line n+m+3 : <number of layers l including half-space for a third model - if wished>
+
3.5 1800. 900. 2300.
−
  ....
+
4. 2000. 1000. 2400.
 +
5. 2200. 1100. 2500.
 +
6. 2400. 1200. 2500.
  
−
Quality factors are not mandatory. Any number of models can be given as input.
+
*'''Category B :'''  Stiff soil / soft rock,  ''360 m/s < VS30  < 800 m/s''
  
−
Example input file :
+
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.
 
  5. 1500. 150. 1600. 50. 15.
 
  10. 1600. 300. 1800. 50. 30.  
 
  10. 1600. 300. 1800. 50. 30.  
 
  20. 2000. 500. 2000. 100. 50.
 
  20. 2000. 500. 2000. 100. 50.
 
  0. 2500. 1000. 2500. 200. 100.
 
  0. 2500. 1000. 2500. 200. 100.
 +
# Model 6, class D
 
  5
 
  5
 
  5. 400. 110. 1500.
 
  5. 400. 110. 1500.
Line 44: Line 59:
 
  10. 1700. 200. 1700.
 
  10. 1700. 200. 1700.
 
  0. 2000. 300. 1900.
 
  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
 
  3
 
  40. 1500. 80. 1500.
 
  40. 1500. 80. 1500.
 
  500. 2000. 600. 2000.
 
  500. 2000. 600. 2000.
 
  0. 4000. 2000. 2500.
 
  0. 4000. 2000. 2500.
 +
# Model 9, class S1
 
  5
 
  5
 
  3. 600. 250. 1800.
 
  3. 600. 250. 1800.
Line 53: Line 77:
 
  10. 1600. 500. 2000.
 
  10. 1600. 500. 2000.
 
  20. 2000. 800. 2200.
 
  20. 2000. 800. 2200.
−
  0. 3000. 1500. 2600.
+
  0. 2200. 1000. 2500.
−
  8
+
 
−
  2. 800. 300. 2000.
+
*'''Category C :'''  Normal soil ''180 m/s < VS30 < 360 m/s''
−
2.5 1200. 500. 2100.
+
 
−
  3. 1500. 700. 2200.
+
*'''Category D :''' Soft soil, ''100 m/s < VS30 < 180 m/s'' >
−
  3.5 1800. 900. 2300.
+
 
−
4. 2000. 1000. 2400.
+
*'''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'' 
−
  5. 2200. 1100. 2500.
+
 
−
6. 2400. 1200. 2500.
+
*'''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?"''')''
−
0. 2500. 1200. 2500.
+
 
 +
*'''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!!''
  
−
== Gpec8 options : Only Generic options==
+
==Format for layered models==
  
−
*'''-help <SECTION>'''            Show help about options. SECTION may be empty or: all, generic
+
  Line 1  : <number of layers n including half-space for first model>
−
*'''  -version'''                  Show version information
+
  Line 2  : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
−
*'''  -app-version'''              Show short version information
+
  ....
−
*'''  -reportbug'''                Start bug report dialog, information about bug is
+
  Line n+1 : 0 <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
−
                            passed through stdin. This option is used
+
  Line n+2 : <number of layers m including half-space for a second model - if wished>
−
                            internally to report bugs if option -nobugreport is
+
  Line n+3 : <thickness (m)> <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
−
                            not specified.
+
  ....
−
*'''  -reportint'''                Start bug report dialog, information about
+
  Line n+m+2 : 0 <Vp (m/s)> <Vs (m/s)> <Density (kg/m3)>[ <Qp> <Qs>]
−
                            interruption is passed through stdin. This option
+
  Line n+m+3 : <number of layers l including half-space for a third model - if wished>
−
                            is used internally to report interruptions if
+
  ....
−
                            option -nobugreport is not specified.
 
−
*'''  -nobugreport'''              Do not generate bug report in case of error
 
  
 +
Quality factors are not mandatory. Any number of models can be given as input.
  
 
== Examples ==
 
== Examples ==
  
−
  gpec8 < test.model
+
gpec8 [[Media:Gpec8e.model|Gpec8.model]]
−
 
 
−
Calculate the EC8 site category for the soil columns in "test.model"
 
  
−
== Copyright ==
+
Determines the EC8 site category for the soil columns in "ec8.model"
  
−
Copyright (c) 2002-2008 Marc Wathelet. All rights reserved.
+
*''' Output '''
−
See http://www.geopsy.org for more information.
+
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?
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