How we make an arch bridge with Openbridge

OpenBridge Modeler is being developed for the most common bridges workflows, but in OpenBridge Designer you can use RM Bridge Enterprise that is our one-tool-for-all solution. It offers the flexibility to model and analysis any bridge structure type, for Arch bridges modeling check the Wiki article below. 

For an Arch you can use as reference the dataset and documentation you can find at File\Examples\Verification Examples and FAQ\ Modeler Link Segments & Truss Modeling as shown in the image and explained in the Wiki link below.

RM Bridge: Modeler Link Segments & Truss Modeling

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Inside File\Examples\Demo Examples & FAQ user will find the Frequently Asked Questions and Solutions section for RM Bridge Enterprise . There user can select the truss model as a reference entitled Modeler Link Segments & Truss Modeling . There will...

An arch would use the same concept of creating different independent Parts in the Cross-section and making the distance between them a variable.

Step 1. You can use the civil profile tool to layout the arc axis, either a parabolic or circular profile

Step 2. You can to create a solid by extrusion along the profile with the adequate section cross

Step 3. You can create a terrain model using the upper arc surface of the solid

Step 4. You can create a complex terrain merging the earlier terrain model to the Digital Terrain Model 

Step 5. You can use the earlier complex terrain for getting the columns over the arc using column-pile feature.

With the 5 steps you can model an arc bridge with the dech over it with constant arc depth, if you need to model a variable depth then you can model the arc with a Openroads corridor. 

Using RM Bridge, after you can obtain the *.dgn file of your Bridge.

Hi Sylvain, Not sure exactly what type of arch bridge you are trying to model, but it is possible to model some basic arch bridges in OBM. For modeling something like this, I simply modified the deck depth parabolically in each span. Please post some drawings of what you are trying to model, if this is not what you are looking for.