In OpenBridge Designer and RM Bridge is presented one local finite element model for a Steel Voided Diaphragm analysis. The parametrized model uses variables definition in RM > Modeler. Vertical loading, the stress state analysis obtained is presented…

Composite bridges with continuous steel girders and concrete reinforced slabs are commonly designed. Because there is a massive difference in the material's stress capacity in tension, considering tensile zones in the reinforced concrete components is…

With OBD CE 2021 Release 2 and RM Bridge v11.13, the User can design one PS slab with circular holes. In OBM, the User should choose a CIP bridge type and work with Place Advanced Deck. For the structural analysis and design, the User can send the…

RM Bridge Errors and Warnings create a list from the calculation processing to allow users to search for possible faults or misses, and notices of alarms for materials limits. More information can be found in the Recalc log that creates a .txt fi…

This RM Bridge FAQ: Influence surfaces example has a .pdf document and .tcl files to show how users can: use the i nfluence surfaces for transversal analysis; use influence surfaces for the traffic load evaluation of wheel loads on grillages; …

Influence surfaces for consideration of laterally distributed loads, or two-dimensional load trains, can be defined in RM Bridge by defining and assembling a set of parallel influence lines. The Default is to have the input Surface as an empty variable…

Due to the consideration of time effects and the respective active loads and elements in the construction simulation of bridges with concrete elements structural engineers, in general, understand that the final stage design of a bridge might be quite…

A detailed camber analysis within the construction schedule is also possible, with the action DoCamber for each label or type of load. This is very useful for construction control where the contractor will check the design pre-camber curve against each…

The Partial Twin Leaf Pier Bottom Connections could be modeled by attaching the Previous full Cross-section to the new Double Leaf CS thru its nodes. As shown in the picture below, the best practice is to use different node numbers and use rigid links…

In RM Bridge , at Modeler , to model a Partial Twin Leaf Pier users need to create two Rigid Connections at the respective Segment Point . Click at New Spring ; Select New Rigid Connection ; Assign the Spring/Rigid Connection Begin and End to…

For the Result Options Diagrams, when using the FEM results, due to too much superposition of lines and shapes, it could be interesting to turn off some directions, faces, or elements in the Diagrams Options . It is important also to consider the…

RM Bridge Results Options with Colored Faces will assign to the screen the selected result with certain colored faces and shading. As shown in the image below, the user: Selects the Colored Faces option and the LC/Sup; Set the respective Component…

RM Bridge Results Options are definitions for the results to be presented as graphics in the current graphics windows view. The structure model results presentation can be scaled and is grouped into five different display types: Deflected Structure…

RM Bridge Diagram Options specify how the diagram's results are displayed. As shown below it can be accessed within the onscreen View Options Menu directly by right-mouse-click on it. . The functions for defining the results Diagram Options are…

The RM Bridge Main Screen has all the necessary functions for the graphic presentation of the model on the back of the main graphic screens of the GUI. When no other input/output window is open, this is the Model View. As shown in the images below, there…

The RM Bridge Main Menu is located as a Top Ribbon main menu bar at the topmost edge of the Graphical User Interface. The start screen consists of 7 options that can be expanded using the 5th button >> for full visualization of all the 13 options: …

To ge t RM Bridge Technical Support just go to the Top Ribbon Menu at Help? and choose one of the options: News / Release info : Requirements, Release Notes, and Product News; Application Help : F1, App Help with initial onscreen program information;…

In OBD CE 2021 Release 2 and RM Bridge v11.13 was improved “ RateF” schedule action for Imperial Units. “RateF”, evaluates the load rating factor for the bridge structure according to AASHTO code. This action is currently only applicable for steel and…

In RM Bridge the standard design processes begin with preparing a structural model, defining the loads, and the construction schedule for the erection stages. Then, two result types of the computer mathematical model analysis are of main interest: …

In RM Bridge the optimization of design parameters is done with the AddCon Method . The Additional Constraint Method is a solution for optimization problems in general within structural engineering. It is known as an extension of the Unit Load Method…

As shown below, in RM Bridge the Analyzer Model View in Modeler is usually shown at the bottom left corner as an indicative of the structure the user is working on. It can be a useful reference when the user is working on the dataset, adding or modifying…

Assemblies in both Modeler and Analyzer are a n ew way of grouping elements, automatically or manually, in the database of objects. It allows for collecting elements, nodes, and further entities. These objects may be addressed throughout the program for…

Modeler Main Girders are in general the superstructure elements created with longitudinal segments using as reference axis the road alignment or a local simplified version of it. They can be referenced to the Base Segment or Point Segment and have additional…

In OBD CE 2021 Release 2 and RM Bridge v11.13, was implemented the Plot element cross-sections for ultimate capacities using different types of force component selections namely: Total: Normal, Total: Split and, Total: Join . Join results Split…