Learn about the process of taking a road from a GIS Model Builder piece of information to a component road, ready for a bridge.
- [Instructor] To prepare a road for Bridge Design within Infraworks, we're going to use the same model, it's Bridge Design for Infraworks 2019.Two Model One. But I'd like you to switch to Proposal BridgeDesignOne_One. Now you maybe aware that Infraworks has proposals within it which are a way of working with multiple versions of the same data.
So for things like bridge design or road design, or urban design, this is really, really powerful stuff because what you can do is you can make multiple versions of the same data within one project, and switch between them, which is what we're doing now. Make sure you've headed over to Bridge View Two, over here, and select the north bridge span. So that's this road over here.
The stack will appear on the right hand side. Now the first thing to remember about bridges in Infraworks is that they need to be applied to component roads. And this is not a component road. I mentioned that when GIS data is imported into Infraworks it automatically comes in as a design road. To convert it to a component road, it is as simple as right clicking on the road whilst it's selected, and hitting Convert to Component Road.
Infraworks will convert it to a component road, and straight away we will notice that the stack on the right hand side changes. And the way the road is displayed changes as well. We have things like the function of the road, the speed of the road, we can choose that this is a freeway, it's an arterial, it's a collector. What we're trying to do here is recreate a real world bridge so much as possible and it is a freeway with a speed limit of 100 kilometers an hour.
So that's what we'll put in over there. You'll also notice that we've got the geometry grading limits, and you'll also see that we have all the different types of attributes that are available with component roads. Next we want to adjust the height of the road because this is not where we want the bridge to be. Obviously we don't want it to be sort of like just skimming the water. In order to do that, we can make sure that the road is selected, and you'll notice that as we pan and zoom around, we have manipulators here.
Now we have horizontal manipulators, and vertical manipulators. So we want to adjust the heights using these. If I tilt you can see them. If I'm more, in more of a plane view, you can't, so just bear that in mind when you are trying to manipulate different parts of the road. What you can do is you can grab them, and you can just type in an elevation. So for example over here it's 603.
I'm just going to type in 615, and hit enter. And automatically, my road will be changed along with the grading, and it tries to adhere to the grading as much as possible. The other side as well, we can grab a manipulator here, and we can type in 610 meters. Now, this is, you know, it's relatively easy, but it's not the most efficient way of changing the vertical profile of a road.
So, let's try another. Whilst we are in this view, and we have the road selected, right click on the road, and hit Show Profile View. And what will happen is the Profile View will show up at the bottom of the window. So within here we can see the points of vertical interest which are these little red triangles. And then we can see there are a number of different things being displayed.
The only things we really have to worry about here are the existing ground which is basically the terrain. So you'll notice here that if I switch the existing ground off, and on again, the terrain and the water, that's the water over there, the terrain is the green, that shows up or disappears depending on what we want it. The finished ground is the road itself. So if I switch that off, you'll notice that it disappears from the display as well.
And the finished ground is what we're going to manipulate here. Now we want the bridge to be kind of as straight as possible, you know, with no lumps and bumps in between it. And within the Profile View, we can click and drag the points of vertical interest, or PVIs, that's what we're going to call them, to where we want them to be. So, click this second to left one, which is this one over here, and drag it to around 615 meters, so, more or less, doesn't have to be absolutely exact.
Then, click the second to right one which is this one over here, and drag it to about 622 meters. So, let's see, there we go, 622, that'll do. That's close enough. Then, we have one more PVI in the middle over here. And we can drag it to about 620 meters. And we can also move it further away from where it originally was, so we can put it more or less in the middle.
But what we want is more or less a straight line. We don't want any lumps and bumps within our road profile. Now you'll notice here that whilst our Profile View has changed, the actual road itself within our view has not, that's because we haven't got this Auto Update model on. You'll notice we've got a little, a nice little information panel over there saying you have one or more edits on the road profile. Move the cursor out of the profile window to refresh the model.
And that's what we're going to do. So, now, Infraworks will update the model, and you can see that the road is much straighter from the start point to the end point. And that's what you want in a bridge. You don't really want a bridge doing a roller coastery type of thing. So now that we have adjusted our profile, we can close the profile window, and we can start to swap this from a road to a bridge.
- Preparing a road for parametric bridge design
- Modifying a bridge in InfraWorks
- Drawing a bridge on a component road
- Adding bridge decorations
- Changing road assemblies on bridges
- Performing line girder analysis on a bridge
- Working with parametric components in InfraWorks and Inventor