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 Define - Bridge Loads Use the Define menu > Bridge Loads commands to specify lanes, vehicle loads and classes, and bridge responses to enable moving-load analysis of bridge structures. Unlike the commands o n the Bridge menu, the subcommand s of the Define menu > Bridge Loads command can be used without an additional license i.e., the Bridge !odeler license is not re"uired#. $enerally, the process re"uires creating the following definitions% Lanes are defined and then frame ob&ects are assigned to the defined lanes. 'e hicles loads are defined and then the defined loads are added to one or more vehicle classes. (he bridge response is defined, which specifies what information is calculated for &oints and frame ob&ects, thereby controlling the comple)ity of, and thus the time re"uired to complete, the analysis. (he defined lanes, vehicle loads, vehicle classes, and bridge response are then used in defining a !oving Load analysis . Use the following Define menu > Bridge Loads subcommands to prepare for the analysis% Lanes.  Use the Define menu > Bridge Loads > Lanes command to define lanes that describe how vehicles move on the structure. * lane can be defined as a chain of frame ob&ects, with an optional centerline offset if the vehicles are located to one side or the other of the frame ob&ect. +lick the Define menu > Bridge Loads > Lanes command to access the Define Lanes form. Vehicles.  Use the Define menu > Bridge Loads > 'e hicles command to define 'e hicle loads. +lick the Define menu > Bridge Loads > 'e hicles command to access the Define 'ehicles form. *fter defining vehicles, they must be added to one or more 'e hicle +lasses before they can be assigned to lanes in a moving- load analysis, even if a 'e hicle +lass c ontains only a single vehicle. Vehicle Classes. Use the Define menu > Bridge Loads > 'e hicle +lasses command to specify sets of one or more vehicles that can be assigned to act on lanes in a moving-load analysis. +lick the Define menu > Bridge Loads > 'e hicle +lasses c ommand to access the Define 'e hicle +lasses form. nly one vehicle in a class acts on the lane at a time. esults are reported for the vehicle causing the most severe response. Bridge Responses. Use the Define menu > Bridge Loads > Bridge esponses command to selectively control what information is calculated for &oints and frame ob&ects in the computationally intensive moving-load analysis. (his command is useful in modifying the time re"uired to complete the analysis. +lick the Define menu > Bridge Loads > Bridge esponses command to access the Bridge esponse e"uests form. Use that form to specify the response categories to be analyed and the calculation method to be used.

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Define - Bridge Loads

Use the Define menu > Bridge Loads commands to specify lanes, vehicle loads and classes, and bridge responses to enable moving-load analysis of bridge structures. Unlike the commands on the Bridge menu, the subcommands of the Define menu > Bridge Loads command can be used without an additional license (i.e., the Bridge Modeler license is not required). Generally, the process requires creating the following definitions:

Lanes are defined and then frame objects are assigned to the defined lanes.

Vehicles loads are defined and then the defined loads are added to one or more vehicle classes.

The bridge response is defined, which specifies what information is calculated for joints and frame objects, thereby controlling the complexity of, and thus the time required to complete, the analysis.

The defined lanes, vehicle loads, vehicle classes, and bridge response are then used in defining a Moving Load analysis.

Use the following Define menu > Bridge Loads subcommands to prepare for the analysis:

Lanes. Use the Define menu > Bridge Loads > Lanes command to define lanes that describe how vehicles move on the structure. A lane can be defined as a chain of frame objects, with an optional centerline offset if the vehicles are located to one side or the other of the frame object. Click the Define menu > Bridge Loads > Lanes command to access the Define Lanes form.

Vehicles. Use the Define menu > Bridge Loads > Vehicles command to define Vehicle loads. Click the Define menu > Bridge Loads > Vehicles command to access the Define Vehicles form. After defining vehicles, they must be added to one or more Vehicle Classes before they can be assigned to lanes in a moving-load analysis, even if a Vehicle Class contains only a single vehicle.

Vehicle Classes. Use the Define menu > Bridge Loads > Vehicle Classes command to specify sets of one or more vehicles that can be assigned to act on lanes in a moving-load analysis. Click the Define menu > Bridge Loads > Vehicle Classes command to access the Define Vehicle Classes form. Only one vehicle in a class acts on the lane at a time. Results are reported for the vehicle causing the most severe response.

Bridge Responses. Use the Define menu > Bridge Loads > Bridge Responses command to selectively control what information is calculated for joints and frame objects in the computationally intensive moving-load analysis. This command is useful in modifying the time required to complete the analysis. Click the Define menu > Bridge Loads > Bridge Responses command to access the Bridge Response Requests form. Use that form to specify the response categories to be analyzed and the calculation method to be used.

Example: Definition of Lanes,Vehicle Classes, Vehicles and a Bridge Response is demonstrated in Problem R.

See Also

BrIM WizardBridge AnalysisDefinir - Carga BridgeUtilice el men Define Loads> Puente comandos para especificar los carriles de vehculos, cargas y clases, y las respuestas de puente para permitir movimiento en vaco anlisis de las estructuras de puentes. A diferencia de los comandos del men Bridge, los subcomandos del men Definir Bridge> Carga comando se puede utilizar sin una licencia adicional (es decir, el puente Modeler no se requiere licencia). Generalmente, el procedimiento requiere la creacin de las siguientes definiciones:

Los carriles se definen a continuacin, los objetos de fotograma estn asignados a los carriles definidos.

Cargas de vehculos se definen a continuacin, y las cargas definidas se aaden a una o ms clases de vehculos.

La respuesta de puente se define, que especifica qu tipo de informacin se calcula para las articulaciones y los objetos de trama, controlando de este modo la complejidad de, y por lo tanto el tiempo requerido para completar el anlisis.

Los carriles definidos, las cargas del vehculo, las clases de vehculos, y la respuesta de puente se utilizan en la definicin de un anlisis de carga mvil.

Utilice el siguiente men Define Loads> Puente subcomandos para prepararse para el anlisis:

Lanes. Utilice el men define> Carga Bridge> Lanes comando para definir carriles que describen cmo los vehculos se mueven en la estructura. Un carril puede ser definido como una cadena de objetos de marco, con una lnea central opcional desplazamiento si los vehculos estn situados a un lado o al otro de la trama objeto. Haga clic en el men Definir Carga> Bridge> Lanes comando para acceder al formulario Definir Lanes.

Vehculos. Utilice el men Define Loads> Puente> Vehculos comando para definir las cargas de vehculos. Haga clic en el men Define Loads> Puente> Vehculos comando para acceder al formulario Definir Vehculos. Despus de definir los vehculos, debern ser aadido a una o ms clases de vehculos antes de que puedan ser asignados a los carriles en un anlisis de movimiento de carga, incluso si una clase de vehculo contiene slo un nico vehculo.

Clases de vehculos. Utilice el men Define Loads> Bridge> clases de vehculos de comandos para especificar los conjuntos de uno o ms vehculos que se pueden asignar a actuar en los carriles en un anlisis de movimiento de carga. Haga clic en el men Definir> Carga Bridge> clases de vehculos para acceder al comando Definir Vehculo forma Clases. Slo un vehculo de una clase acta sobre el carril a la vez. Los resultados se presentan para el vehculo provocando la respuesta ms grave.

Respuestas Bridge. Utilice el men Define Loads> Puente> Respuestas puente de mando para controlar selectivamente la informacin que se calcula para las articulaciones y los objetos de trama en los procesos informticos en movimiento de carga de anlisis. Este comando es til para modificar el tiempo necesario para completar el anlisis. Haga clic en el men Definir> Carga> Respuestas Puente Puente comando para acceder a la respuesta del puente de solicitudes formulario. Utilice esta forma para especificar las categoras de respuesta que deben analizarse y el mtodo de clculo que se utilizar.

Ejemplo: Definicin de Lanes, clases de vehculos, Autos, motos y una respuesta Bridge se demuestra en el problema R.

Vea tambin

BrIM Asistente

Puente de Anlisis