Difference between revisions of "Gpec8"
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== EC8 site categories == | == EC8 site categories == | ||
| − | + | Category A : Rock, <math> 800 m/s < VS30 </math> AND <math>VS05 > 360 m/s </math> | |
| − | + | ||
| − | + | 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: | Format for layered models: | ||
| Line 34: | Line 40: | ||
Example input file : | Example input file : | ||
| + | 5 | ||
5. 1500. 150. 1600. 50. 15. | 5. 1500. 150. 1600. 50. 15. | ||
10. 1600. 300. 1800. 50. 30. | 10. 1600. 300. 1800. 50. 30. | ||
Revision as of 13:41, 9 March 2010
Contents
Synopsis
gpec8 [OPTIONS] [FILE]
Description
Determines the 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 gpsh The output is the EC8 site category depending on the value of the time-averaged velocity over the top 30 m ("VS30")
EC8 site categories
Category A : Rock, AND
Category B : Stiff soil / soft rock,
Category C : Normal soil
Category D : Soft soil,
Category E : Thin soft soil with and a thickness between 5 and 20 m , overlying a much stiffer unit with
Category S1 : Special category 1 : very soft soil (), 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:
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.
Example input file :
5 5. 1500. 150. 1600. 50. 15. 10. 1600. 300. 1800. 50. 30. 20. 2000. 500. 2000. 100. 50. 0. 2500. 1000. 2500. 200. 100. 5 5. 400. 110. 1500. 10. 1500. 120. 1600. 10. 1600. 150. 1650. 10. 1700. 200. 1700. 0. 2000. 300. 1900. 3 40. 1500. 80. 1500. 500. 2000. 600. 2000. 0. 4000. 2000. 2500. 5 3. 600. 250. 1800. 15. 1500. 80. 1600. 10. 1600. 500. 2000. 20. 2000. 800. 2200. 0. 3000. 1500. 2600. 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. 0. 2500. 1200. 2500.
Gpec8 options : Only Generic options
- -help <SECTION> Show help about options. SECTION may be empty or: all, generic
- -version Show version information
- -app-version Show short version information
- -reportbug Start bug report dialog, information about bug is
passed through stdin. This option is used
internally to report bugs if option -nobugreport is
not specified.
- -reportint Start bug report dialog, information about
interruption is passed through stdin. This option
is used internally to report interruptions if
option -nobugreport is not specified.
- -nobugreport Do not generate bug report in case of error
Examples
gpec8 < test.model
Calculate the EC8 site category for the soil columns in "test.model"
Copyright
Copyright (c) 2002-2008 Marc Wathelet. All rights reserved. See http://www.geopsy.org for more information.
