Evacuation time analysis
Posted: Monday 29 February, 2016 - 11:28
The attached models shows an example of how to analyze evacuation times in a Pedestrian Dynamics model.
Model explanation:
- The model contains a simple route from entry to waiting area to exit.
- At time = 30 minutes the action timer (which can be found to right in the model)s triggers ALL agents to go to the exits. At this moment the 2 emergency exits at the bottom will be available as well.
- The model contains a dummy waypoint location just below the action timer. Agent will not visit this location physically, but it will be used for output analysis. The waypoint activity location has ID 6.
- Now have a look at the settings of the action timer. Tab General > Setting Event Trigger.
- Click in this field: at the start of the evacuation there will be a logging for ALL agents in the model as if they visit at that moment the dummy waypoint (look for ID = 6) in the code. So, for all agents, no matter where they are in the model, there will be a time stamp logging at start of the evacuation.
Now let's have a look at the output:
- Go to the menu Simulate > Wizard and click Start Experiment. This will run a simulation scenario of a 35 minutes simulation.
- When the scenario is completed go to the menu Results > 2D Output.
- Click on the button Show output of activity route, which looks like this: .
- There is one route: EvacuationToExit. Select it and click Show Graph.
- This will show an evacuation time histogram for the simulation which will look like this: - The legenda to the right shows mean/min/max evaucation times.
- By default the graph shows the aggregate values. Please note that by selecting other rows in the table below the graph it is possible to analyze the evacuation time for each exit separately.
How to create this kind of graph:
- Close the graph window.
- In the activity route output window: select the route and click Edit.
- In the tab Route Definition. See that the following route was defined: from Waypoint (the dummy logging at start evacuation!) to all Entry_Exits.
- In the tab Route Settings. See that the setting Break Down Row is set to 2. This means that the graph will not only show the aggregate results, but will also contain all the information for each location in step 2. This means: it is possible to analyze the output for each exit separately.
Model explanation:
- The model contains a simple route from entry to waiting area to exit.
- At time = 30 minutes the action timer (which can be found to right in the model)s triggers ALL agents to go to the exits. At this moment the 2 emergency exits at the bottom will be available as well.
- The model contains a dummy waypoint location just below the action timer. Agent will not visit this location physically, but it will be used for output analysis. The waypoint activity location has ID 6.
- Now have a look at the settings of the action timer. Tab General > Setting Event Trigger.
- Click in this field: at the start of the evacuation there will be a logging for ALL agents in the model as if they visit at that moment the dummy waypoint (look for ID = 6) in the code. So, for all agents, no matter where they are in the model, there will be a time stamp logging at start of the evacuation.
Now let's have a look at the output:
- Go to the menu Simulate > Wizard and click Start Experiment. This will run a simulation scenario of a 35 minutes simulation.
- When the scenario is completed go to the menu Results > 2D Output.
- Click on the button Show output of activity route, which looks like this: .
- There is one route: EvacuationToExit. Select it and click Show Graph.
- This will show an evacuation time histogram for the simulation which will look like this: - The legenda to the right shows mean/min/max evaucation times.
- By default the graph shows the aggregate values. Please note that by selecting other rows in the table below the graph it is possible to analyze the evacuation time for each exit separately.
How to create this kind of graph:
- Close the graph window.
- In the activity route output window: select the route and click Edit.
- In the tab Route Definition. See that the following route was defined: from Waypoint (the dummy logging at start evacuation!) to all Entry_Exits.
- In the tab Route Settings. See that the setting Break Down Row is set to 2. This means that the graph will not only show the aggregate results, but will also contain all the information for each location in step 2. This means: it is possible to analyze the output for each exit separately.