In RM Bridge one of the fastest ways to check results and display the model is directly at the Main Screen. It's easy and fast because any additions or necessary modifications can be made directly at the screen menus. Tips & Tricks: Right-button…

In RM Bridge , inside OpenBridge Designer , the user can select the Non-linear Material option at the Non-linear Analysis options inside the Basic Settings Tab of the Analyzer Recalc Window for the consideration of the non-linearities in the modeled structure…

Boundaries are any border around elements of a cross-section, internal or external to the CS. The Boundary constraints are defined by a set of connected boundary line segments and the options are shown in the image below. More information about…

Flutter aerodynamic instability is nowadays a well-known phenomenon; although, it still requires quite complex wind engineering knowledge and techniques to be analyzed. For Torsional Flutter the Critical velocity derivates from a Single degree of…

This is the Main Page of a series of Wiki articles on the Be Communities page for OpenBridge and OpenTunnel engineering software solutions from Bentley Systems Inc . OBD - OpenBridge Designer OTD - OpenTunnel Designer OpenBridge Designer includes…

For DSC , the Double Sum Combination we have an interaction between the different modes. The interaction is defined by the so-called correlation matrix [ ρ g ] which now has also off-diagonal terms. R tot = √ ΣΣ R i T ρ g Ri , for j=1 to n, and for…

For the ABS rule we have basically to make a summation of the absolute values, so the formula is simply: Rtot = Σ|Ri| When considering it together with the RM superposition method , to get corresponding values, we also have to check the sign of the…

Inside OpenBridge Designer , at the Extras Menu, in RM Bridge Analyzer , the users will find useful special functions for Loading and Stages definitions including the additional macro for easily generating the extensive input sequence template for standardized…

Inside OpenBridge Designer , at the Extras Menu, in RM Bridge Analyzer , the users will find useful special functions for Loading and Stages definitions. These are additional macros for easily generating extensive input sequences or templates for standardized…

RM > Analyzer > RateF schedule action evaluates the load rating factor for the bridge structure according to AASHTO code. Parameters necessary to be introduced are: Dead load: FactSWSUM.sup Live Load Sup: FactTraffic.sup Capacity: Steel PrimLC…

1. OBM > Utilities > Send to RM Bridge 2. Select Standard Code and Material List 3. General Settings 4. Superstructure – Deck 5. Substructure – Cap , Piers and Piles 6. Substructure - Restraint Conditions 7. Assign RM Materials …

Is presented below the Rating Factor calculation done in OBD / RM Bridge for a two spans composite steel bridge with a central pier. Bridge Modelling done in OBM and calculation performed in RM on a complete model in OBD. Table of Contents: A…

RM > Modeler definition of slender parts in cross-section. Cross-Sections – Slender Parts: Required for the local buckling. Reference Set – Steel Slender part type Start point = free point Line point = restraint point Subtype of slender…

RM > Analyzer > UltRes schedule action for capacity design of composite steel bridges. Steel Design checks performed with: UltRes – design resistance ResChk – proof check (interaction formulas) Design of Composite Steel Bridge - Video

The RM Bridge model in Modeler is created with the assumption of one of the three possibles Cross-section planes for the elements in Elevation : Normal to element axis in Elevation : perpendicular to the defined local element axis, i.e., in the Local…

OBD CE 2022 Release 1 and RM Bridge v11.14, the User can import OBM Deck Templates into RM Bridge for structural analysis, following the below steps: 1.OBM Create Deck Template In OBM > Utilities > Libraries > Decks, create a new deck cross-section…

At the Recalc Window: 3. Dynamics/Iterations: 2. Iteration control , the definition of the convergence parameters for non-linear iterative structural deformation analysis is set. The default values ensure in general a fast and sure convergence to an extremely…

RM Bridge Enterprise Recalculation Window has, inside the Advanced Options, the possible Dynamics / Iterations options to be set up; and, as shown in the screenshot below, they settings 2. Iteration Control , includes an option Used processors (threads…

In RM Bridge inside OpenBridge Designer , the best practice for Diaphragms & Stiffeners is creating a separate Link segment for these elements. The Links can be accessed at the Main Girder menu, at the top right, as shown in the screenshot below. The…

In the RM Bridge inside OpenBridge Designer, the Modeler portion of the application allows the users to create virtually any Cross-Section geometry. The definition of cross-sections is independent of axes and segments as they will get connected to segment…

For RM Bridge inside OpenBridge Designer users have the option to Read Cross Section From DGN at Modeler\Import CS that allows the DGN drawing files to be used to create just the references, as no intelligence or references or variables are yet possible…

We are pleased to announce the new file format developed for OpenBridge Designer (OBD) files to be used starting v10.08.01. Below please find the highlights of the changes with new file format (.obdx) and comparison with the old file format (.obd): …

The Recal Window 2. Extended Settings: 1. Special Settings allow the user to create additional definitions of: Use Shear Lag Defs for Stiffness reduct .: Shear Lag areas are ignored for bending moments of inertia reducing the CS values. Join Primary…

The Recalc Window Menu Options 2. Extended Settings allow users to set additional global calculation parameters for: Special Settings : Shear Lag and deformation, Composite Join Forces, Primary TempVar, FE results options; Prestressing : Cross-section…

In this Demo example a simple-supported beam with three different prestressing is considered for comparison: Variant 1 - PExt: External Tendons Only Variant 2 - DEFAULT: External and Internal Tendon Variant 3 - PInt: Internal Tendons Only …