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ADRS

 

 

 

The Acceleration-Displacement Response Spectrum (ADRs) chart plots one or more records, where PSa is plotted against Sd.

 

The figures below show the ADRS charts for some samples records.

 

 

Chart

Show/hide chart general features:

Legend: show/hide the chart series legend

Records: show/hide individual records (components & triplets)

Period Range: show/hide the period range to which records were scaled or matched

X-axis: Freq: switch between showing Period and Frequency on the X-axis

X Log: switch the X-axis scale between Linear and Logarithmic

Y Log: switch the Y-axis scale between Linear and Logarithmic

X Grid: show/hide grids on the X coordinates (parallel to Y-axis)

Y Grid: show/hide grids on the Y coordinates (parallel to X-axis)

Norm X-Axis: switch the X-axis normalization on/off (normalizes X-axis such that maximum value is 1.0)

Norm Y-Axis: switch the Y-axis normalization on/off (normalizes Y-axis such that maximum value is 1.0)

Freeze X-Axis: freeze X-axis scale to its current range (min,max)

Freeze X-Axis: freeze Y-axis scale to its current range (min,max)

Components

Show/hide a specific record component in the chart:

H1 Comp: show/hide 1st Horizontal Component

H2 Comp: show/hide 2nd Horizontal Component

V Comp: show/hide Vertical Component

Triplet Resultant

Show/hide multiple characteristics of the resulting triplets using different computations.

All: Show the suite generated records chart

None: Hide all records from the chart

Geomean: Show/hide the geomean of the record

Max(1,2): Show/hide the maximum of components 1 and 2

Min(1,2): Show/hide the minimum of components 1 and 2

SRSS: Show/hide the SRSS of the selected record(s)

RotD100: Show/hide the maximum rotated component of the selected record(s)

RotD50: Show/hide the median rotated component of the selected record(s)

RotD0: Show/hide the RotD0 of the selected record(s)

Comp1: Show/hide the first component of the record(s)

Comp2: Show/hide the second component of the record(s)

Comp3: Show/hide the third component of the record(s)

FN Comp: Show/hide the record(s) FN Component

FP Comp: Show/hide the record(s) FP Component

Spectra Statistics

Show/hide selected records statistics such as mean and dispersion (Sigma). The available statistical evaluations for the records are the following:

Log Mean: Select how the Suite Mean (Average) is computed: Log Mean vs Arithmetic/Linear Mean

Log Sigma:  Select how the Suite Sigma (dispersion) is computed: Log Std Deviation (LogSigma) vs Arithmetic/Linear Std Deviation

Auto Stats: Turn On Automatic Statistics (Based on Context)

Suite mu: Show/hide Suite Mean (Average)

Suite mu + sig: Show/hide Suite Mean + Sigma (84th Percentile)

Suite mu - sig: Show/hide Suite Mean - Sigma (16th Percentile)

Target mu: Show/hide the defined target response spectrum

Target mu + sig: Show/hide the defined target spectrum Mean + Sigma (84th Percentile)

Target mu - sig: Show/hide the defined target spectrum Mean - Sigma (16th Percentile)

Target Limits

Plot target limits in order to verify that spectra fall within the specified limits for Peaks and Valleys or that the Suite Mean is not violating the specified Mean Limit (e.g. 90% of Target Design Spectrum per ASCE 7-16), when specified. The image below shows an example where all selected and scaled record spectra satisfactorily fall between the Peaks and Valleys limits (dashed blue lines), which in this case were specified at +/- 2 sigma's from the mean target.

Peaks

Show/hide the following:

Peak PSa: Show/hide PSa peaks

Peak PSv: Show/hide PSv peaks

Peak Sd: Show/hide Sd peaks

Periods: Show/hide period lines

Modifications

This option is only shown for modified records (scaled, matched, etc..). The options shown may vary depending the type of modification. Show/hide the following:

Original: display the original record (before modification)

Modified: display the modified record (after modification)

Line Wt (Mod): display the modified chart with a heavier line thickness

Trip Targets: Display individual triplet targets (generally used with mean spectral matching)

Comp Targets: Display individual component targets (generally used with mean spectral matching)

Line Wt (Tgt): Display the individual targets with a heavier line thickness

Target 1 (Bidir Type): Display Target1, if used (generally used with scaling or spectral matching)

Target 2 (Bidir Type): Display Target2, if used (generally used with scaling or spectral matching)

Target 3 (Bidir Type): Display Target3, if used (generally used with scaling or spectral matching)

Copy Data

Users may select the output chart of interest and have the ability to perform the following:

Copy Metadata, copies the record view record data, including header and footers of the data, which makes it easy to create record tables in MS Excel or Word.

Copy Chart Data, copies the chart series data which can be exported to create tables in MS Excel or Word.

Copy Chart Image, take a screenshot of the selected chart

 

The figures below illustrates example for the ADRS chart with modified and original records.

 

Figure: ADRS chart of the modified KBU record with peak PSa and Sd values.

 

Figure: ADRS chart of the original and modified records with peak PSa and Sd values

 

 

 

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