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PENTAGON-Bridge has comprehensive analysis facilities to design all types of bridge design from simple grillages to complex cable stayed and suspension bridges. PENTAGON-Bridge searches the worst position and the worst combination of loads for specified variables such as moment, shear, stress, support reaction etc at a given location in a bridge deck or a structure using the influence line, the influence surface, the envelope of maximum/minimum values of such variables.

PENTAGON-Bridge has been developed specifically for the bridge analysis based on the powerful 3D finite element technology. PENTAGON-Bridge has its technical foundation on the famous, general-purpose FE program, PENTAGON-3D. PENTAGON-Bridge will meet your analysis needs and reduce your modeling efforts, greatly.

PENTAGON-Bridge covers any of the following special features for the most cost-effective analysis of bridges.

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Influence line : produces the influence line along the path of moving loads
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Influence surface : produces the influence contour over the area passed by moving loads
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Bridge Envelope : produces the maximum and minimum values of the specified parameter (moment, shear, stress, support reaction etc) for all elements.
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Bridge Target : traces the target load condition to make the specified member forces at a location. For example, this traces the load condition to make the minimum (negative) moment at a internal support of bridge.
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Eigenvalue problems (see an Arch bridge example)
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Earthquake spectrum analysis by SRSS and CQC method
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Ground motion analysis
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Time history analysis for the dynamic loads
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Dynamic analysis for the moving loads by simple input of moving velocity and/or (roughness + vehicle model)

Besides the above capabilities, PENTAGON-Bridge extends its application to :

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Geometric nonlinearity for truss and frame structures
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Material nonlinearity for truss, spring and solid elements
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Staged construction
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Solid modeling for ground-structure interaction
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Stop and restart function
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Result combination between the load cases, the load stages, the bridge envelopes and the bridge targets

PENTAGON-Bridge is the Windows based program on Windows 95, Windows 98, Windows NT and Windows2000. The mesh generation is easily accomplished by several mouse clicks and other analysis information is input in full GUI environment. With the powerful OpenGL functions (the graphic library), the analysis results are presented in the beautiful 3D graphics.