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  Home Products Engineering Assistance Package

Engineer AP. Bridge structures

Engineer AP

Programs
Mathematics for engineers
Geometric properties of sections
Static & dynamic analyses, stability
Steel structures
Reinforced concrete structures
Masonry and masonry reinforcing
Timber structures
Foundations and beddings
Loads and effects
Bridge structures

Influence lines in continuous beams

The  program enables you to generate influence lines of displacements, rotation angles, bending moments and shear forces from moving loads in multispan continuous beam (up to five spans with two cantilevers). Sections of spans may be different. It is also possible to take into account the flexibility of support.

Moving load defined by the user is computed as well as standard loads A8 and A11.

Analysis of steel bridge superstructures

The  program enables you to simulate, analyse and evaluate complex sections of superstructures of highway steel bridges. Cross-section of the superstructure is generated by defining the system of orthotropic slabs that form the section. A set of forces M, N, Q taken from appropriate envelope diagrams of the rigid beam (usually continuous beam) is specified for every section. In fact, normal stresses are non-uniformly distributed across the comprex section. But this is compensated by introducing compensating coefficients that are specified for orthotropic slabs (reduction coefficients). In analysis, model of the section is decomposed into elementary standard objects (parts of walls, parts of slabs between ribs, parts of slabs with ribs, plates that from longitudinal ribs, etc.). For every object depending on the service conditions in every section along the span, the strength and local stability is checked according to SNIP 2.05.03-84* and amendments to it. 



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