Generic RC MRF model creator

Procedures to create a reinforced concrete building (3D), or a frame (2D) nonlinear building model consisting of moment resisting frames (MRF) as the primary lateral load resisting system.

May use multiprocessing to carry out multiple stripe analysis (non-linear time history analyses).

May be used in any os system.

Required libraries: requirements.txt

  python -m pip install -r requirements.txt

Table of Contents

Show/Hide

1. Supported analysis types
2. Required input arguments
3. Samples
4. Future

Supported analysis types

Details

Show/Hide

1. Static elastic analysis (ST)
2. Modal analysis (MA)
3. Equivalent lateral force (ELF)
4. Static pushover analysis (PO)
5. Non-linear time history analysis (NLTHA)
   1. Incremental dynamic analysis (IDA)
   2. Multiple stripe analysis (MSA)

Required input arguments per analysis

Details

Show/Hide

• sections_file - required for All

    csv or pickle file or DataFrame with hysteretic model parameters
  

• loads_file - required for All

    csv file masses and gravity loads
  

• materials_file - required for All

    csv file containing material properties
  

• outputsDir - required for All

    Directory to export outputs to
  

• gmdir - required for IDA and MSA

    Directory to read records from
  

• gmfileNames - required for IDA and MSA

    File names in order of ["GM_names_x", "GM_names_y", "GM_time_step"]
  

• IM_type - required for IDA, default to 2

    Intensity measure type
  

• max_runs - required for IDA, default to 15

    Maxium number of runs per record
  

• analysis_time_step - required for IDA and MSA, default to 0.01

    Nonlinear analysis time step
  

• drift_capacity - required for IDA, default to 10 (%)

    Assumed drift capacity for the building, beyond which the building is assumed to have collapsed
  

• analysis_type - required for All

    Analysis type to be run, list of strings, e.g. ["ST", "MA"] to run both ST and MA
  

• system - required for All, default to "space"

    May have two values:
    	perimeter - exterior frames only as seismic lateral-load resisting frames
    	space - all frames as seismic lateral-load resisting frames
  

• hinge_model - required for All, default to "Hysteretic"

    May have two values:
    	Hysteretic - Hysteretic hinge models (uses offsets)
    	Haselton - Haselton spring models (uses four node panel zones)
  

• flag3d - required for All, default to False

    False for 2D modelling
    True for 3D modelling
  

• direction - required for PO and ELF

    Direction of application for PO and ELF analysis
    0 stands for X direction, 1 stands for Y direction
  

• export_at_each_step - required for MSA and IDA, default to True

    True for exporting outputs for each time step (recommended)
  

• period_assignment - required for IDA, dictionary

    Period assignment ID for X and Y direction
  

• periods_ida - required for IDA

    List of float (periods) to use for IDA analysis
  

• tcl_filename - required for ST, MA, PO

    tcl filename necessary to generate tcl file models
  

Examples

Details

Show/Hide

3D building models

Example 1: Static analysis - exampleStatic.py

Example 2: Modal analysis - exampleModel.py

Example 3: Static pushover analaysis - examplePushover.py

Example 4: MSA - exampleMSA.py

Example 5: IDA - exampleIDA.py

Example 6: Visualize - visualizeSPO.py

Example 7: 2D model with Haselton springs - exampleHaselton2D.py

Future

Details

Show/Hide

• Quality testing
• Haselton hinge models, example
• 2D application examples
• Elastic models
• 3D application examples
• Update solutionAlgorithm to incorporate interpolation functions (secondary analysis option, not recommended)