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    THE MOST TRUSTED SOLUTION FOR SEGMENTAL BRIDGE PROJECTS
    Originally developed over 25-years ago to support complex segmental bridge projects, LARSA 4D's robust staged analysis
    capabilities continue to provide the #1 solution for pre-cast and post-tensioned bridges in the United States.
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    UNRIVALED SUPPORT FOR ADVANCED BRIDGE PROJECTS
    Extensively used with segmental post-tensioned concrete bridges, the tools available
    in LARSA 4D simplify structural analysis and design for the most complex projects.

Extensively developed to support the design of concrete bridges

LARSA 4D’s advanced time-dependent material effects and unrivaled staged construction capabilities with geometric and material nonlinearity accurately model and address the unique challenges associated with the design and analysis of concrete bridges.

Pre-Cast and Cast-in-Place Concrete Bridges

The analysis capabilities of LARSA 4D include time-dependent material effects including the time effect on elastic modulus, creep, and shrinkage, which are calculated throughout LARSA 4D’s staged construction analysis.

Pre-Stressed and Post-Tensioned Bridges

Tendons can be defined in LARSA 4D using the Tendon Editor, where parabolic curvature can be entered on two planes (y, z). Short- and long-term losses due to relaxation and superimposed loads are computed during staged construction analysis.

Segmental and Spliced-Girder Construction

LARSA 4D’s staged construction analysis has been designed for the needs of segmental, spliced-girder, and balanced cantilever construction, including incremental launching. Displacement initializations, construction method options, and hoist activities determine how deformation affects the placement of the next constructed segment.

Staged Construction of a Post-Tensioned Concrete Bridge

Construction Activities

Supported construction activities in LARSA 4D include construction and deconstruction of members, plates, springs and foundations, in addition to loading, temporary/traveler loads, support changes, displacement initialization and hoist for incremental launching.

Segmental Construction Methods

Segmental construction options for Staged Construction Analysis are used for modeling balanced cantilever bridges. LARSA 4D's hinged cast, match cast, and displacement initiliziation options automatically adjust bridge geometry as a new segments are cast to match the displacements of the previous segments.

Material Time Effects

LARSA’s time-dependent material effects take into consideration creep and shrinkage for concrete, relaxation of steel, time effect on modulus of elasticity, tendon post-tensioning losses from creep, shrinkage and superimposed loads, and custom time dependent curves for particular material properties and design codes.

The following packages of LARSA 4D are recommended for the design and analysis of concrete bridges.

  • LARSA 4D BRIDGE

    Our #1 Software for Bridge Projects

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  • LARSA 4D BRIDGE PLUS

    The complete software for Segmental Bridges

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LARSA 4D BRIDGE

LARSA 4D BRIDGE PLUS