Building damage

Building damage#

Description

This analysis computes building damage based on a particular hazard. Currently supported hazards are: earthquake, tsunami, tornado, hurricane and flood.

The process for computing the structural damage is similar to other parts of the built environment. First, a fragility is obtained based on the hazard type and attributes of the building. Based on the fragility, the hazard intensity at the location of the building is computed. Using this information, the probability of exceeding each limit state is computed, along with the probability of damage. For the case of an earthquake hazard, soil information can be used to modify the damage probabilities to include damage due to liquefaction.

The outputs of this analysis are CSV file with probabilities of damage and JSON file with information about hazard and fragilities.

Input parameters

key name

type

name

description

result_name *

str

Result name

Name of the result dataset.

hazard_type *

str

Hazard type

Hazard type (earthquake, tsunami, tornado, hurricaneWindfields).

hazard_id *

str

Hazard id

ID of the hazard from the Hazard service.

fragility_key

str

Fragility key

Fragility key used in mapping dataset.

use_liquefaction

bool

Liquefaction

Use liquefaction, if applicable to the hazard.
Default is False.

use_hazard_uncertainty

bool

Uncertainty

Use hazard uncertainty.
Default is False.

seed *

int

Seed

Initial value to seed the random number generator.

num_cpu

int

Number of CPUs

Number of CPUs used for parallel computation.
Default is 1.

liquefaction_geology_dataset_id

str

Liquefaction id

Liquefaction geology/susceptibility dataset id.
If not provided, liquefaction will be ignored.

Input datasets

key name

type

name

description

buildings *

ergo:buildingInventoryVer4
ergo:buildingInventoryVer5
ergo:buildingInventoryVer6
ergo:buildingInventoryVer7

Building dataset

A building dataset.

dfr3_mapping_set *

incore:dfr3MappingSet

DFR3 Mapping Set

DFR3 Mapping Set.

retrofit_strategy

incore:retrofitStrategy

Retrofit Strategy

Building retrofit strategy that contains guid and retrofit method.

Input Hazards

key name

type

name

description

hazard

earthquake
tornado
hurricane
flood
tsunami

Hazard

Supported hazard object for using local and remote hazards.

Output datasets

key name

type

parent key

name

description

ds_result *

ergo:buildingDamageVer5

buildings

Results

A dataset containing results
(format: CSV).

damage_result *

incore:buildingDamageSupplement

buildings

Results

Information about applied hazard value and fragility
(format: JSON).

(* required)

Execution

code snippet:

    # Create building damage
    bldg_dmg = BuildingDamage(client)

    # Load input dataset
    bldg_dmg.load_remote_input_dataset("buildings", bldg_dataset_id)

    # Load fragility mapping
    fragility_service = FragilityService(client)
    mapping_set = MappingSet(fragility_service.get_mapping(mapping_id))
    bldg_dmg.set_input_dataset('dfr3_mapping_set', mapping_set)

    # Specify the result name
    result_name = "memphis_bldg_dmg_result"

    # Set analysis parameters
    bldg_dmg.set_parameter("result_name", result_name)
    bldg_dmg.set_parameter("hazard_type", hazard_type)
    bldg_dmg.set_parameter("hazard_id", hazard_id)
    bldg_dmg.set_parameter("num_cpu", 10)

    # Run building damage analysis
    bldg_dmg.run_analysis()

full analysis: building_dmg.ipynb