2.8. DL: Damage and Loss

The Damage and Loss panel is where the user selects a damage and loss methodology to estimate losses over a region. The following damage and loss applications are available:

2.8.1. Pelicun Damage and Loss for Buildings

Shown in Fig. 2.8.1.1, the Pelicun Damage and Loss application has the following inputs:

  1. Damage and Loss Methodology: The type of damage and loss methodology to use. Currently, the following damage and loss methodologies are available:

    • Hazus MH EQ

      The Hazus MH EQ option, expects the inputs to include standard engineering demand parameters (EDPs) for earthquakes such as peak interstory drift ratio (PID), peak floor acceleration (PFA), peak roof drift (PRD), and peak floor displacement (PFD). Use this option if performing a building response analysis.

    • Hazus MH EQ IM

      The Hazus MH EQ IM option is more rudimentary, and only expects an intensity measure (IM) as an input, e.g., peak ground acceleration (PGA). Use this option if you are NOT performing a building response analysis, i.e., the Building Modeling type is set to None in the MOD tab. Also, in the ANA tab, the Building Analysis Engine type should be IMasEDP when using this option.

    • Hazus MH HU

      The Hazus MH HU option is for the prediction of damage and loss to buildings subjected to hurricanes. This option expects a wind intensity measure (IM) as an input, e.g., peak wind speed (PWS).

    • User-provided Fragilities

      The User-provided Fragilities option allows users to employ their own custom fragility functions in the damage and loss workflow. This option expects the user to provide an auto-populate script and the path to a folder containing the user-defined fragility functions, as seen below in Fig. 2.8.1.1. An example of such practice can be found in Example 9 of R2D examples.

    The HAZUS options employ data from the Hazards U.S. Multi-Hazard project (HAZUS-MH). The Hazus MH EQ and the Hazus MH EQ IM options are intended for damage and loss analysis of buildings subjected to earthquakes. The Hazus MH HU option is intended for damage and loss analysis of buildings subjected to hurricanes.

  2. Event Time: Select event time ‘on’ or ‘off’. Selecting the event time to ‘on’ defines the time of the event in YYYY-MM-DD:HH format. ‘off’ turns all time-effects off.

  3. Number of Realizations: The number of loss realizations to generate in an analysis.

  4. Output Detailed Results: Checking this box will output detailed results.

  5. Create Log File: Checking this box will create a log file of the analysis.

  6. Include Ground Failure: Checking this box will include ground failure in the analysis. If ground failure is included, fragility groups associated with ground failure are added in the auto-population phase. Note that such analysis requires peak ground displacement (PGD) values as inputs.

  7. Auto-populate Script: A path to a Python script that is user-provided. The auto-populate script is employed to link or map assets to their respective fragility functions.

  8. User-defined Fragility Function Folder: A path to a folder that contains any user-defined fragility functions.

../../../../../_images/R2DPelicunDLPanel.png

Fig. 2.8.1.1 Pelicun Damage and Loss Input panel.

Additional information on Pelicun and descriptions of its output are available at Pelicun Documentation.

2.8.2. Pelicun Damage and Loss for Transportation Infrastructure

The Pelicun Damage and Loss for Transportation Infrastructure has the same user interface with buildings, as shown in Fig. 2.8.1.1. The damage and loss methodology options supported for transportation infrastructure are Hazus MH EQ IM and User-provided Fragilities.

The Hazus MH EQ IM methodology implements the damage and loss model defined in Hazus Earthquake Model Technical Manual. For bridges, Hazus MH EQ IM expects SA_0.3 and SA_1.0 as input for evaluating ground shaking-induced damage for bridges. If ground failure is enabled, permanent ground deformation (PGD_h and PGD_v) also need to be provided. For roadways, permanent ground deformation (PGD_h and PGD_v) need to be provided. For tunnels, peak ground acceleration (PGA) and permanent ground deformation (PGD_h and PGD_v) are required.

The User-provided Fragilities option allows users to employ their own custom fragility functions in the damage and loss workflow. This option expects the user to provide an auto-populate script and the path to a folder containing the user-defined fragility functions, as seen below in Fig. 2.8.1.1. An example of such practice can be found in Example 9 of R2D examples.