Using InfraWorks, develop an initial road alignment, adjust road assembly components, and add a bridge structure.
Transcript
00:04
We have the basic model created using model building and we are now going to start the process of creating our conceptual,
00:10
or scheme design, by firstly laying out our initial road alignment.
00:16
We start by selecting a road assembly from the library and set out the alignment.
00:20
At this early stage, we are exploring the terrain to find the best workable arrangement.
00:26
Once the road is in place, we can proceed to make the changes we feel are necessary,
00:30
such as adding curves and looking at the vertical alignment.
00:35
We can see that, in this example, the vertical alignment is fairly flat, creating quite a deep cutting.
00:42
We can change that by using the profile view and selecting a point of interest and dragging the vertical alignment into place.
00:52
We can also add a point of interest at a desired location
00:55
and manipulate that in a similar way by zooming to the appropriate scale and then dragging the point into place.
01:03
Once we are satisfied that the alignment is in the correct position, we can then move on to the road assembly.
01:09
So far, we have been using the supplied example road assemblies,
01:13
but we can now make changes to the one we have used and add that to our library for future use.
01:22
Each road assembly, in what is called a Component road,
01:25
is made up from a number of individual components which can be selected individually and adjusted or deleted,
01:31
as in this case by removing the central barrier.
01:36
There is also a library, not only of example road assemblies, but also of the components which can then be added to the current road.
01:47
In this case, we will select a curb and gutter from the library and drag it into position in between existing elements.
01:55
We can then configure the extent of this new element which could be a partial length of the road,
01:60
but in this case is configured for the full extent.
02:13
In addition to elements making up the road assembly, we can also add road decorations, such as we see here with the road barrier.
02:22
They are added in a similar way to the road components,
02:25
by selecting from the library and configuring them by changing the part properties in the panel.
02:33
At this stage, we can also adjust the roadside grading.
02:38
The default grading is added when the component road is placed
02:41
and can be changed at any time by selecting either the road itself to change all the grading on both sides,
02:48
or by selecting them individually to make more specific changes.
02:55
Once a complete assembly has been modelled, it is then possible to select a point along the road
02:60
and add the assembly at that point to our library for future use.
03:05
This saved assembly can then be added to other component roads already modelled for either their partial or full length.
03:13
We will see an example of that later.
03:17
We are now at the point where we can start thinking about adding the bridge structure to our model.
03:23
This is easily achieved by selecting Add Bridge from the menu and selecting two points along the alignment.
03:30
A default bridge will be modeled parametrically between those two points using the built-in heuristic rules
03:36
to determine a starting point for the arrangement of piers, girders, deck and abutments.
03:44
We can then start to manipulate the bridge by making changes the designer feels are necessary,
03:49
such as the extent of the bridge, or curvature of the alignment.
03:54
At all stages, any changes invoke a remodel of the bridge, which parametrically rebuilds automatically.
04:03
At the beginning of this process, we created a road assembly, which is now in use.
04:08
However, we will normally require a different road assembly for the extent of the bridge itself.
04:14
We can make this change by selecting Replace Assembly from the menu and selecting the extent of the change on the bridge itself.
04:22
This way, the designer can introduce the changes in the road assembly
04:25
to take account of the make up of the road and also geometric changes, such as super elevation.
04:32
Changes in the road assembly have been made and perhaps now the designer may want to explore different construction types
04:39
or even alternative structural forms.
04:41
This is a quick and efficient process using proposals, which store each scheme separately and can be switched between on demand.
04:50
Once the proposal name has been entered, the designer can then make the necessary changes.
04:56
In our example, the designer wishes to explore different girder types as well as the number of piers.
05:02
This is done by selecting a girder and then simply changing it to a different one from the section library.
05:09
In this case, changing from precast concrete to a steel clay girder.
05:14
Once this change has been made, the properties of this girder can be transferred to girders in specific positions
05:21
or to all girders within the bridge.
05:23
Changing the number of piers is also an easy task carried out by simply changing the number of piers in the panel.
05:30
As always, the whole bridge will rebuild parametrically, automatically.
05:36
This modified bridge option can be compared to previous schemes simply by switching proposals.
05:42
Using this workflow, the designer can explore many scheme options at the early stage of the project
05:48
by using the advanced tool set that we will examine in later videos in this series, model complex structural forms such as box girders,
05:58
arches, cable state, and suspension bridge types.
06:04
When exploring different options, even for simple girders construction,
06:09
it is often useful to understand whether the pier spacing and number of girders is likely to be correct.
06:15
The designer can confirm this early on in the design process by utilizing the analysis and design tools.
06:22
An automated process can be initiated by selecting a girder, or group of girders, and set the analysis and design process going.
06:31
A number of assumptions are necessarily made at this early stage, and the tool will automatically perform a live load optimization,
06:38
structural analysis, and in this case, attendant optimization, and return the results for examination.
06:46
The designer can visually explore the results by hovering over the girders to reveal the unity values.
06:54
Then, once a specific girder has been selected, more detailed information will be revealed.
06:60
If a deeper understanding of the analysis and design is required,
07:03
it is possible to examine the full design report with all the analysis and design calculations available for inspection.
07:11
All calculations that are carried out will be in accordance with the chosen design code,
07:15
with each article or clause from the code explicitly called out and the four formulas and calculations available for each.
00:04
We have the basic model created using model building and we are now going to start the process of creating our conceptual,
00:10
or scheme design, by firstly laying out our initial road alignment.
00:16
We start by selecting a road assembly from the library and set out the alignment.
00:20
At this early stage, we are exploring the terrain to find the best workable arrangement.
00:26
Once the road is in place, we can proceed to make the changes we feel are necessary,
00:30
such as adding curves and looking at the vertical alignment.
00:35
We can see that, in this example, the vertical alignment is fairly flat, creating quite a deep cutting.
00:42
We can change that by using the profile view and selecting a point of interest and dragging the vertical alignment into place.
00:52
We can also add a point of interest at a desired location
00:55
and manipulate that in a similar way by zooming to the appropriate scale and then dragging the point into place.
01:03
Once we are satisfied that the alignment is in the correct position, we can then move on to the road assembly.
01:09
So far, we have been using the supplied example road assemblies,
01:13
but we can now make changes to the one we have used and add that to our library for future use.
01:22
Each road assembly, in what is called a Component road,
01:25
is made up from a number of individual components which can be selected individually and adjusted or deleted,
01:31
as in this case by removing the central barrier.
01:36
There is also a library, not only of example road assemblies, but also of the components which can then be added to the current road.
01:47
In this case, we will select a curb and gutter from the library and drag it into position in between existing elements.
01:55
We can then configure the extent of this new element which could be a partial length of the road,
01:60
but in this case is configured for the full extent.
02:13
In addition to elements making up the road assembly, we can also add road decorations, such as we see here with the road barrier.
02:22
They are added in a similar way to the road components,
02:25
by selecting from the library and configuring them by changing the part properties in the panel.
02:33
At this stage, we can also adjust the roadside grading.
02:38
The default grading is added when the component road is placed
02:41
and can be changed at any time by selecting either the road itself to change all the grading on both sides,
02:48
or by selecting them individually to make more specific changes.
02:55
Once a complete assembly has been modelled, it is then possible to select a point along the road
02:60
and add the assembly at that point to our library for future use.
03:05
This saved assembly can then be added to other component roads already modelled for either their partial or full length.
03:13
We will see an example of that later.
03:17
We are now at the point where we can start thinking about adding the bridge structure to our model.
03:23
This is easily achieved by selecting Add Bridge from the menu and selecting two points along the alignment.
03:30
A default bridge will be modeled parametrically between those two points using the built-in heuristic rules
03:36
to determine a starting point for the arrangement of piers, girders, deck and abutments.
03:44
We can then start to manipulate the bridge by making changes the designer feels are necessary,
03:49
such as the extent of the bridge, or curvature of the alignment.
03:54
At all stages, any changes invoke a remodel of the bridge, which parametrically rebuilds automatically.
04:03
At the beginning of this process, we created a road assembly, which is now in use.
04:08
However, we will normally require a different road assembly for the extent of the bridge itself.
04:14
We can make this change by selecting Replace Assembly from the menu and selecting the extent of the change on the bridge itself.
04:22
This way, the designer can introduce the changes in the road assembly
04:25
to take account of the make up of the road and also geometric changes, such as super elevation.
04:32
Changes in the road assembly have been made and perhaps now the designer may want to explore different construction types
04:39
or even alternative structural forms.
04:41
This is a quick and efficient process using proposals, which store each scheme separately and can be switched between on demand.
04:50
Once the proposal name has been entered, the designer can then make the necessary changes.
04:56
In our example, the designer wishes to explore different girder types as well as the number of piers.
05:02
This is done by selecting a girder and then simply changing it to a different one from the section library.
05:09
In this case, changing from precast concrete to a steel clay girder.
05:14
Once this change has been made, the properties of this girder can be transferred to girders in specific positions
05:21
or to all girders within the bridge.
05:23
Changing the number of piers is also an easy task carried out by simply changing the number of piers in the panel.
05:30
As always, the whole bridge will rebuild parametrically, automatically.
05:36
This modified bridge option can be compared to previous schemes simply by switching proposals.
05:42
Using this workflow, the designer can explore many scheme options at the early stage of the project
05:48
by using the advanced tool set that we will examine in later videos in this series, model complex structural forms such as box girders,
05:58
arches, cable state, and suspension bridge types.
06:04
When exploring different options, even for simple girders construction,
06:09
it is often useful to understand whether the pier spacing and number of girders is likely to be correct.
06:15
The designer can confirm this early on in the design process by utilizing the analysis and design tools.
06:22
An automated process can be initiated by selecting a girder, or group of girders, and set the analysis and design process going.
06:31
A number of assumptions are necessarily made at this early stage, and the tool will automatically perform a live load optimization,
06:38
structural analysis, and in this case, attendant optimization, and return the results for examination.
06:46
The designer can visually explore the results by hovering over the girders to reveal the unity values.
06:54
Then, once a specific girder has been selected, more detailed information will be revealed.
06:60
If a deeper understanding of the analysis and design is required,
07:03
it is possible to examine the full design report with all the analysis and design calculations available for inspection.
07:11
All calculations that are carried out will be in accordance with the chosen design code,
07:15
with each article or clause from the code explicitly called out and the four formulas and calculations available for each.
